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707.273 | Attractors with Vanishing Central Charge | We consider the Attractor Equations of particular $\mathcal{N}=2$, d=4
supergravity models whose vector multiplets' scalar manifold is endowed with
homogeneous symmetric cubic special K\"{a}hler geometry, namely of the
so-called $st^{2}$ and $stu$ models. In this framework, we derive explicit
expressions for the critical moduli corresponding to non-BPS attractors with
vanishing $\mathcal{N}=2$ central charge. Such formul\ae hold for a generic
black hole charge configuration, and they are obtained without formulating any
\textit{ad hoc} simplifying assumption. We find that such attractors are
related to the 1/2-BPS ones by complex conjugation of some moduli. By uplifting
to $\mathcal{N}=8$, d=4 supergravity, we give an interpretation of such a
relation as an exchange of two of the four eigenvalues of the $\mathcal{N}=8$
central charge matrix $Z_{AB}$. We also consider non-BPS attractors with
non-vanishing $\mathcal{Z}$; for peculiar charge configurations, we derive
solutions violating the Ansatz usually formulated in literature. Finally, by
group-theoretical considerations we relate Cayley's hyperdeterminant (the
invariant of the stu model) to the invariants of the st^{2} and of the
so-called t^{3} model.
| hep-th | we consider the attractor equations of particular mathcaln2 d4 supergravity models whose vector multiplets scalar manifold is endowed with homogeneous symmetric cubic special kahler geometry namely of the socalled st2 and stu models in this framework we derive explicit expressions for the critical moduli corresponding to nonbps attractors with vanishing mathcaln2 central charge such formulae hold for a generic black hole charge configuration and they are obtained without formulating any textitad hoc simplifying assumption we find that such attractors are related to the 12bps ones by complex conjugation of some moduli by uplifting to mathcaln8 d4 supergravity we give an interpretation of such a relation as an exchange of two of the four eigenvalues of the mathcaln8 central charge matrix z_ab we also consider nonbps attractors with nonvanishing mathcalz for peculiar charge configurations we derive solutions violating the ansatz usually formulated in literature finally by grouptheoretical considerations we relate cayleys hyperdeterminant the invariant of the stu model to the invariants of the st2 and of the socalled t3 model | [['we', 'consider', 'the', 'attractor', 'equations', 'of', 'particular', 'mathcaln2', 'd4', 'supergravity', 'models', 'whose', 'vector', 'multiplets', 'scalar', 'manifold', 'is', 'endowed', 'with', 'homogeneous', 'symmetric', 'cubic', 'special', 'kahler', 'geometry', 'namely', 'of', 'the', 'socalled', 'st2', 'and', 'stu', 'models', 'in', 'this', 'framework', 'we', 'derive', 'explicit', 'expressions', 'for', 'the', 'critical', 'moduli', 'corresponding', 'to', 'nonbps', 'attractors', 'with', 'vanishing', 'mathcaln2', 'central', 'charge', 'such', 'formulae', 'hold', 'for', 'a', 'generic', 'black', 'hole', 'charge', 'configuration', 'and', 'they', 'are', 'obtained', 'without', 'formulating', 'any', 'textitad', 'hoc', 'simplifying', 'assumption', 'we', 'find', 'that', 'such', 'attractors', 'are', 'related', 'to', 'the', '12bps', 'ones', 'by', 'complex', 'conjugation', 'of', 'some', 'moduli', 'by', 'uplifting', 'to', 'mathcaln8', 'd4', 'supergravity', 'we', 'give', 'an', 'interpretation', 'of', 'such', 'a', 'relation', 'as', 'an', 'exchange', 'of', 'two', 'of', 'the', 'four', 'eigenvalues', 'of', 'the', 'mathcaln8', 'central', 'charge', 'matrix', 'z_ab', 'we', 'also', 'consider', 'nonbps', 'attractors', 'with', 'nonvanishing', 'mathcalz', 'for', 'peculiar', 'charge', 'configurations', 'we', 'derive', 'solutions', 'violating', 'the', 'ansatz', 'usually', 'formulated', 'in', 'literature', 'finally', 'by', 'grouptheoretical', 'considerations', 'we', 'relate', 'cayleys', 'hyperdeterminant', 'the', 'invariant', 'of', 'the', 'stu', 'model', 'to', 'the', 'invariants', 'of', 'the', 'st2', 'and', 'of', 'the', 'socalled', 't3', 'model']] | [-0.1896660607749012, 0.1154122390339069, -0.014469808853402205, 0.13020524496664487, -0.08141316010302604, -0.19816910617119637, -0.00896233060196064, 0.2671155539952968, -0.15068056897298823, -0.24586820938023765, 0.11366794563791323, -0.2887444052026888, -0.1980037780467575, 0.10031272882055602, -0.07742947301849415, 0.05077558550666797, -0.04292549121885191, 0.04608493324192847, -0.1422781767895357, -0.24099945454078467, 0.41082318384508937, -0.040431626829919375, 0.24415335374796135, 0.031174446778515212, 0.11134699066913516, 0.009957056792904815, 0.003391810775164118, -0.003589116127819881, -0.1868261543708146, 0.11471929742965693, 0.2347661991307554, 0.09929201663086003, 0.06564464747971861, -0.44369245841878757, -0.20300842452099954, 0.1602206646310463, 0.16414919203235465, 0.14631668087811425, -0.020666803584637992, -0.2587850391479022, 0.08274757694838757, -0.1983193222690958, -0.2336872074802643, -0.1366208915601446, 0.03817572716910105, -0.026159941480555653, -0.2500147245515733, 0.07464593971687501, 0.05870030835386608, 0.0252972380230589, -0.1309875468351498, -0.08897930488524926, -0.11564964566864734, 0.06617752529030456, 0.12421000194281186, 0.0034518680967853444, 0.10628482229186542, -0.1569981174557277, -0.1387608568328736, 0.33667830361835877, -0.04180663083604201, -0.2756834292244276, 0.12467559830860107, -0.11459750091634999, -0.18692450130567748, 0.07470145722721654, 0.07659237001631299, 0.1881386842137787, -0.12274435062799052, 0.19954426185890603, -0.06983578607395909, 0.08347256257014139, 0.11006987913230644, 0.03689860955249937, 0.23315144225110482, 0.06882197956400289, 0.039540914782135575, 0.1673954522992159, 0.01558985915475872, -0.16622696799011186, -0.3988433200094474, -0.11917933709258159, -0.08823926339322734, 0.1501179160440021, -0.21129579340376733, -0.20130730051335124, 0.3740681476350984, 0.06301048058002481, 0.20580470669648152, 0.07424485829476951, 0.17779846062894755, 0.10582888238173331, 0.04666801224622501, 0.06440043626298037, 0.2296344584452344, 0.1725290331330988, 0.07704183279449525, -0.20493264705736255, -0.10384374947325718, 0.2182542539350468] |
707.2731 | Plasmon dispersion in metal nanoparticle chains from angle-resolved
scattering | We present angle and frequency resolved optical extinction measurements to
determine the dispersion relation of plasmon modes on Ag and Au nanoparticle
chains with pitches down to 75 nm. The large splitting between transverse and
longitudinal modes and the band curvature are inconsistent with reported
electrostatic near-field models, and confirm that far-field retarded
interactions are important, even for $\lambda/5$-sized structures. The data
imply that lower propagation losses, larger signal bandwidth and larger maximum
group velocity then expected can be achieved for wave vectors below the light
line. We conclude that for the design of optical nanocircuits coherent
far-field couplings across the entire circuit need to be considered, even at
subwavelength feature sizes.
| cond-mat.other | we present angle and frequency resolved optical extinction measurements to determine the dispersion relation of plasmon modes on ag and au nanoparticle chains with pitches down to 75 nm the large splitting between transverse and longitudinal modes and the band curvature are inconsistent with reported electrostatic nearfield models and confirm that farfield retarded interactions are important even for lambda5sized structures the data imply that lower propagation losses larger signal bandwidth and larger maximum group velocity then expected can be achieved for wave vectors below the light line we conclude that for the design of optical nanocircuits coherent farfield couplings across the entire circuit need to be considered even at subwavelength feature sizes | [['we', 'present', 'angle', 'and', 'frequency', 'resolved', 'optical', 'extinction', 'measurements', 'to', 'determine', 'the', 'dispersion', 'relation', 'of', 'plasmon', 'modes', 'on', 'ag', 'and', 'au', 'nanoparticle', 'chains', 'with', 'pitches', 'down', 'to', '75', 'nm', 'the', 'large', 'splitting', 'between', 'transverse', 'and', 'longitudinal', 'modes', 'and', 'the', 'band', 'curvature', 'are', 'inconsistent', 'with', 'reported', 'electrostatic', 'nearfield', 'models', 'and', 'confirm', 'that', 'farfield', 'retarded', 'interactions', 'are', 'important', 'even', 'for', 'lambda5sized', 'structures', 'the', 'data', 'imply', 'that', 'lower', 'propagation', 'losses', 'larger', 'signal', 'bandwidth', 'and', 'larger', 'maximum', 'group', 'velocity', 'then', 'expected', 'can', 'be', 'achieved', 'for', 'wave', 'vectors', 'below', 'the', 'light', 'line', 'we', 'conclude', 'that', 'for', 'the', 'design', 'of', 'optical', 'nanocircuits', 'coherent', 'farfield', 'couplings', 'across', 'the', 'entire', 'circuit', 'need', 'to', 'be', 'considered', 'even', 'at', 'subwavelength', 'feature', 'sizes']] | [-0.1446903906217231, 0.19171392640753374, -0.016633321879838535, 0.0575033305401637, -0.08089784857489772, -0.1696420047261232, 0.030351473855458805, 0.491903516824718, -0.2523087226777329, -0.30889138109931674, 0.046576612780021655, -0.27632877512558085, -0.08760968739636713, 0.23481871221090775, 0.04222818248200457, 0.050441699358424893, 0.06797133412774282, -0.06972728561408617, -0.031350434512353025, -0.1258928727637557, 0.2674824175684973, 0.06106124692470641, 0.3207941778960663, 0.08916258365587071, 0.05993516652882602, 0.01452942502838014, 0.018495779111142363, 0.013208126372380837, -0.11941528500592376, 0.10774493356327619, 0.2622935450314987, -0.006910374497172532, 0.17474353652413901, -0.4194218839040479, -0.21636888216174133, 0.050386059936975036, 0.18755122553688255, 0.12883731614806698, -0.0015313766407990107, -0.2670969205094619, 0.07672022462210006, -0.06742769938071368, -0.1511223642239431, -0.01474160390595595, 0.02957981769813577, 0.017037570602386386, -0.25403031341832233, 0.10095371232107953, 0.03882074317903266, 0.08878608553057855, -0.046499688778206844, -0.12171222454960551, -0.06228385780317088, 0.0807772823986975, 0.01209161853468096, -0.0049253313944817665, 0.15490072640078562, -0.09704098396154272, -0.06393308122642338, 0.34478425662461165, -0.08637042047544005, -0.12692451805950286, 0.16192147589125042, -0.20875904003345944, 0.026323951587819302, 0.20179493946803584, 0.21184803156165388, 0.06696121615298965, -0.09476994824918776, -0.0021347444061911454, 0.024465247359559954, 0.23706417259768592, 0.13387180028298684, 0.11636691945730834, 0.25388835014792177, 0.11329818752317412, 0.04583109477702696, 0.09141414905143147, -0.1603482516612522, 0.01030827555302027, -0.2537046608489913, -0.11768017653040252, -0.177389193846433, 0.03274600058917254, -0.12734048744282886, -0.12009071266731701, 0.36655175599462547, 0.15215829631130406, 0.17472160204684967, 0.07672924058577926, 0.2924468771361553, 0.12255149938245849, 0.15113416669873503, 0.07232937836801415, 0.34804788241078993, 0.1537918261009025, 0.07711511186684843, -0.26079308874024126, 0.0035603242435467406, -0.0432479951933429] |
707.2732 | An explicit formula for the characters of the symmetric group | We give an explicit expression of the normalized characters of the symmetric
group in terms of the contents of the partition labelling the representation.
| math.CO math.GR math.RT | we give an explicit expression of the normalized characters of the symmetric group in terms of the contents of the partition labelling the representation | [['we', 'give', 'an', 'explicit', 'expression', 'of', 'the', 'normalized', 'characters', 'of', 'the', 'symmetric', 'group', 'in', 'terms', 'of', 'the', 'contents', 'of', 'the', 'partition', 'labelling', 'the', 'representation']] | [-0.167935208339865, 0.01987707058772988, -0.1024469129818802, 0.017192833009175956, -0.04213983961381018, 0.03635318821761757, 0.028737332516660292, 0.31147511924306553, -0.2521470080440243, -0.2667049802063654, 0.05345404752976416, -0.2726491372450255, -0.1816138372911761, 0.09123059455305338, -0.06929158698767424, -0.0755827793230613, -0.006413127140452464, 0.2239810723500947, -0.13598111124398807, -0.2603899158226947, 0.340500316893061, 0.014766800682991743, 0.3107758089900017, 0.05633770643423001, 0.13618260092334822, 0.045952997189791255, -0.08213350246660411, -0.08560548583045602, -0.1255444486256844, 0.23531093595859906, 0.24510970882450542, 0.14993013814091682, 0.15082963338742653, -0.4106186785114308, -0.0734921926826549, 0.14643961649077633, 0.16580180880070353, 0.09215957516183455, -0.06306882474261026, -0.2826928651581208, 0.07596306357299909, -0.22668713657185435, -0.09797360096126795, -0.05360424916337555, 0.0573390429005182, 0.0008149811377127966, -0.266797184633712, 0.042999171457874276, 0.08543599024415016, 0.11086266974840935, -0.12543942406773567, -0.15501636328796545, 0.007391054881736636, 0.2526006609356652, 0.017246159336840112, -0.004203482162362586, 0.025989374010047566, -0.25105240490908426, -0.08495033361638586, 0.3983411048538983, -0.05196435404165337, -0.30731758444259566, 0.0788024024028952, -0.11870989281063278, -0.10526595904957503, 0.11563327132413785, 0.14036241290159523, 0.14692412572912872, -0.0887142048838238, 0.1305512747106453, -0.13043800089508295, 0.10118285141167387, 0.08656931295990944, 0.030539191133963566, 0.14724938998309275, 0.05578018899541348, 0.01052694166234384, 0.24601237506916127, -0.01882973654816548, -0.03821646887809038, -0.36594450908402604, -0.22892366167313108, -0.18666563679774603, 0.035931944071004786, -0.1853936924599111, -0.2270249342545867, 0.48396413944040734, 0.07300947901482384, 0.21806879403690496, 0.12876069409927973, 0.2128610711855193, 0.19884776758650938, 0.06922553132365768, 0.023458592341436695, 0.05233185354154557, 0.1466671791858971, -0.04214708864067992, -0.2235681420813004, 0.04870010379818268, 0.19708803404743472] |
707.2733 | Origin of the Metallicity Dependence of Exoplanet Host Stars in the
Protoplanetary Disk Mass Distribution | The probability of a star hosting a planet that is detectable in radial
velocity surveys increases Ppl(Z) oc 10^2Z, where Z is metallicity. Core
accretion models reproduce this trend, since the protoplanetary disk of a high
metallicity star has a high density of solids and so forms cores which accrete
gas before the primordial gas disk dissipates. This paper considers the origin
of the form of Ppl(Z). We introduce a simple model in which detectable planets
form when the mass of solids in the protoplanetary disk, Ms, exceeds a critical
value. In this model the form of Ppl(Z) is a direct reflection of the
distribution of protoplanetary disk masses, Mg, and the observed Ppl(Z) is
reproduced if P(Mg>Mg') oc 1/Mg'^2. We argue that a protoplanetary disk's
sub-mm dust mass is a pristine indicator of the mass available for
planet-building and find the observed sub-mm disk mass distribution is
consistent with the observed Ppl(Z) if Ms>0.5M_J is required to form detectable
planets. Any planet formation model which imposes a critical solid mass for
planet formation would reproduce the observed Ppl(Z), and core accretion models
are empirically consistent with a threshold criterion. We identify 7
protoplanetary disks which, by rigid application of this criterion, would be
expected to form detectable planets. A testable prediction is that Ppl(Z)
should flatten both for Z>0.5dex and as more distant and lower mass planets are
discovered. Further, combining this model with one in which the evolution of a
star's debris disk is also influenced by the solid mass in its protoplanetary
disk, results in the prediction that debris disks detected around stars with
planets should be more infrared luminous than those around stars without
planets in tentative agreement with recent observations.
| astro-ph | the probability of a star hosting a planet that is detectable in radial velocity surveys increases pplz oc 102z where z is metallicity core accretion models reproduce this trend since the protoplanetary disk of a high metallicity star has a high density of solids and so forms cores which accrete gas before the primordial gas disk dissipates this paper considers the origin of the form of pplz we introduce a simple model in which detectable planets form when the mass of solids in the protoplanetary disk ms exceeds a critical value in this model the form of pplz is a direct reflection of the distribution of protoplanetary disk masses mg and the observed pplz is reproduced if pmgmg oc 1mg2 we argue that a protoplanetary disks submm dust mass is a pristine indicator of the mass available for planetbuilding and find the observed submm disk mass distribution is consistent with the observed pplz if ms05m_j is required to form detectable planets any planet formation model which imposes a critical solid mass for planet formation would reproduce the observed pplz and core accretion models are empirically consistent with a threshold criterion we identify 7 protoplanetary disks which by rigid application of this criterion would be expected to form detectable planets a testable prediction is that pplz should flatten both for z05dex and as more distant and lower mass planets are discovered further combining this model with one in which the evolution of a stars debris disk is also influenced by the solid mass in its protoplanetary disk results in the prediction that debris disks detected around stars with planets should be more infrared luminous than those around stars without planets in tentative agreement with recent observations | [['the', 'probability', 'of', 'a', 'star', 'hosting', 'a', 'planet', 'that', 'is', 'detectable', 'in', 'radial', 'velocity', 'surveys', 'increases', 'pplz', 'oc', '102z', 'where', 'z', 'is', 'metallicity', 'core', 'accretion', 'models', 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707.2734 | Pulsating Casimir force | Based on the Lifshitz theory we show that the illumination of one (Si) plate
in the three-layer systems Au--ethanol--Si, Si--ethanol--Si and
$\alpha$-Al${}_2$O${}_3$--ethanol--Si with laser pulses can change the Casimir
attraction to Casimir repulsion and vice versa. The proposed effect opens novel
opportunities in nanotechnology to actuate the periodic movement in electro-
and optomechanical micromachines based entirely on the zero-point oscillations
of the quantum vacuum without the action of mechanical springs.
| quant-ph | based on the lifshitz theory we show that the illumination of one si plate in the threelayer systems auethanolsi siethanolsi and alphaal_2o_3ethanolsi with laser pulses can change the casimir attraction to casimir repulsion and vice versa the proposed effect opens novel opportunities in nanotechnology to actuate the periodic movement in electro and optomechanical micromachines based entirely on the zeropoint oscillations of the quantum vacuum without the action of mechanical springs | [['based', 'on', 'the', 'lifshitz', 'theory', 'we', 'show', 'that', 'the', 'illumination', 'of', 'one', 'si', 'plate', 'in', 'the', 'threelayer', 'systems', 'auethanolsi', 'siethanolsi', 'and', 'alphaal_2o_3ethanolsi', 'with', 'laser', 'pulses', 'can', 'change', 'the', 'casimir', 'attraction', 'to', 'casimir', 'repulsion', 'and', 'vice', 'versa', 'the', 'proposed', 'effect', 'opens', 'novel', 'opportunities', 'in', 'nanotechnology', 'to', 'actuate', 'the', 'periodic', 'movement', 'in', 'electro', 'and', 'optomechanical', 'micromachines', 'based', 'entirely', 'on', 'the', 'zeropoint', 'oscillations', 'of', 'the', 'quantum', 'vacuum', 'without', 'the', 'action', 'of', 'mechanical', 'springs']] | [-0.16682289024370153, 0.2148913100862236, -0.10583768342969133, -0.03801105623202982, -0.06375936057362984, -0.1583424331064322, 0.05241679318714887, 0.3654681137665661, -0.2709263016316873, -0.27923463693639233, -0.0008360892173715993, -0.2913286885691445, -0.20207367241973362, 0.2186857822365058, -0.08409212419151593, 0.06482069141495583, -0.008977634248448841, -0.01284844358799173, -0.00943623638517265, -0.13850271244665413, 0.2958200273673926, 0.02591826516349536, 0.3505651478780739, 0.08813387860974936, 0.09977214905753065, 0.023604844272859506, 0.08546207806290086, -0.009266726943705953, -0.10068958625794691, 0.1312567140740245, 0.1633303627830499, -0.029928418362874593, 0.2517470071064447, -0.5051657720399436, -0.2167568935303768, 0.04433865686739558, 0.08926863719556313, 0.1570804432180446, -0.08595198465497303, -0.3343556319683123, 0.0060148965011336914, -0.14803413415689076, -0.10994855072627317, -0.04710701673722534, 0.021401828109745436, 0.016250441948980537, -0.20329994267658957, 0.05267353738143818, 0.049225064668693204, 0.06559170147320673, -0.12996014987410448, -0.060404867767842846, 0.0025447555470155246, 0.09740393736691617, 0.029116712427183764, -0.03420538251607943, 0.24792453700176148, -0.13570305046194525, -0.1378289733860475, 0.40154201084914715, -0.1039018660437128, -0.19138306095751365, 0.2035313565214512, -0.15674208399297587, 0.003648619793021857, 0.08303778027809823, 0.15900554185482993, 0.04828527407310625, -0.14534623363514, 0.06916490674397643, 0.08831750701612501, 0.1724451812011982, 0.13497485209312013, 0.02928921576144535, 0.25483732210444426, 0.17841683141887188, 0.05245121489209471, 0.17721270689212565, -0.07572000139434613, -0.07272939600828868, -0.2828785879050951, -0.1431495515045835, -0.19094145942284768, 0.057155610951803514, -0.07203908086647523, -0.20679824982783687, 0.37123786384211993, 0.18797895087818825, 0.08797811325500483, -0.029712964061286245, 0.3008366411120923, 0.06660745154941149, 0.0898361584838869, -0.005140978759571688, 0.3605379048880857, 0.10358291335747953, 0.13730259036728695, -0.32683821829425086, -0.039940495082218926, 0.047114936579296836] |
707.2735 | The hard synchrotron X-ray spectrum of the TeV BL Lac 1ES 1426+428 | We have observed 1ES 1426+428 with INTEGRAL detecting it up to $\sim$150 keV.
The spectrum is hard, confirming that this source is an extreme BL Lac object,
with a synchrotron component peaking, in a $\nu F_\nu$ plot, at or above 100
keV, resembling the hard states of Mkn 501 and 1ES 2344+514. All these three
sources are TeV emitters, with 1ES 1426+428 lying at a larger redshift
(z=0.129): for this source the absorption of high energy photons by the IR
cosmic background is particularly relevant. The observed hard synchrotron tail
helps the modeling of its spectral energy distribution, giving information on
the expected intrinsic shape and flux in the TeV band. This in turn constrains
the amount of the poorly known IR background.
| astro-ph | we have observed 1es 1426428 with integral detecting it up to sim150 kev the spectrum is hard confirming that this source is an extreme bl lac object with a synchrotron component peaking in a nu f_nu plot at or above 100 kev resembling the hard states of mkn 501 and 1es 2344514 all these three sources are tev emitters with 1es 1426428 lying at a larger redshift z0129 for this source the absorption of high energy photons by the ir cosmic background is particularly relevant the observed hard synchrotron tail helps the modeling of its spectral energy distribution giving information on the expected intrinsic shape and flux in the tev band this in turn constrains the amount of the poorly known ir background | [['we', 'have', 'observed', '1es', '1426428', 'with', 'integral', 'detecting', 'it', 'up', 'to', 'sim150', 'kev', 'the', 'spectrum', 'is', 'hard', 'confirming', 'that', 'this', 'source', 'is', 'an', 'extreme', 'bl', 'lac', 'object', 'with', 'a', 'synchrotron', 'component', 'peaking', 'in', 'a', 'nu', 'f_nu', 'plot', 'at', 'or', 'above', '100', 'kev', 'resembling', 'the', 'hard', 'states', 'of', 'mkn', '501', 'and', '1es', '2344514', 'all', 'these', 'three', 'sources', 'are', 'tev', 'emitters', 'with', '1es', '1426428', 'lying', 'at', 'a', 'larger', 'redshift', 'z0129', 'for', 'this', 'source', 'the', 'absorption', 'of', 'high', 'energy', 'photons', 'by', 'the', 'ir', 'cosmic', 'background', 'is', 'particularly', 'relevant', 'the', 'observed', 'hard', 'synchrotron', 'tail', 'helps', 'the', 'modeling', 'of', 'its', 'spectral', 'energy', 'distribution', 'giving', 'information', 'on', 'the', 'expected', 'intrinsic', 'shape', 'and', 'flux', 'in', 'the', 'tev', 'band', 'this', 'in', 'turn', 'constrains', 'the', 'amount', 'of', 'the', 'poorly', 'known', 'ir', 'background']] | [-0.029966215928637883, 0.16933001522497723, -0.04604657137069881, 0.19105866609796185, -0.07928426018196756, -0.13294186707343755, 0.0006781203749900063, 0.5018255373508465, -0.16264028936563954, -0.42160297500166466, 0.038108778137872674, -0.3424544160470094, 0.07135636594744657, 0.18794565362954224, -0.01605374977083468, -0.015062124733869895, 0.0023575115237173027, -0.05362489739266353, 0.04183866603338307, -0.14346668308949082, 0.2520004594017093, 0.18606992020476154, 0.2457175698430406, 0.03721071673155861, 0.08262706064899278, -0.025865374386643734, -0.03452749335210831, -0.09762250572798879, -0.046155160613184344, 0.0876656094205384, 0.24637046977839758, 0.04920439565141602, 0.17278696076823322, -0.24337837196947112, -0.21667524566116736, 0.13112630168017667, 0.1444862834745791, -0.048383299231044646, -0.007401532204859565, -0.27913629843633836, 0.05170802571015751, -0.13767427339254523, -0.1549683666666894, 0.08757939609524802, 0.012817979748625823, -0.029367574672801496, -0.15850918752527454, 0.13145679273317015, 0.0049745709146940854, 0.03764788489750912, -0.1393325232486127, -0.11002068291607547, -0.04321530145570272, 0.039084430570085725, 0.10411892250006095, 0.06283563430651992, 0.14878661830235668, -0.16879749534522917, -0.096963834774688, 0.3795536881449019, -0.023979594959400413, -0.007891679975787193, 0.18614093901786377, -0.2140527359982271, -0.24324563956191023, 0.2666552776501067, 0.09941082745714765, 0.10990974191969972, -0.14207942689185946, 0.07671865987368079, -0.015017958590760827, 0.2531680286430368, 0.04729496136428864, 0.0807154530212586, 0.2985106008979151, 0.1233361839994455, -0.0025116231432563163, 0.15301387525368026, -0.2652738090676475, 0.07687340869106413, -0.3299653806034627, -0.025355902093470217, -0.18218922146455938, 0.14401708060981538, -0.10835238317064601, -0.13647837098261978, 0.42430001869797707, 0.06992123488760818, 0.22347331543384893, 0.025271779217764856, 0.2693127269730752, 0.15032924770385148, 0.03222780445272603, 0.16080911641910187, 0.35066841484087224, 0.082417214082978, 0.15551437646135446, -0.17501019295570025, 0.015287940121611686, -0.05947190099793327] |
707.2736 | Non-Hermitian Quantum Systems and Time-Optimal Quantum Evolution | Recently, Bender et al. have considered the quantum brachistochrone problem
for the non-Hermitian $\cal PT$-symmetric quantum system and have shown that
the optimal time evolution required to transform a given initial state
$|\psi_i\rangle$ into a specific final state $|\psi_f\rangle$ can be made
arbitrarily small. Additionally, it has been shown that finding the shortest
possible time requires only the solution of the two-dimensional problem for the
quantum system governed by the effective Hamiltonian acting in the subspace
spanned by $|\psi_i\rangle$ and $|\psi_f\rangle$. In this paper, we study a
similar problem for the generic non-Hermitian Hamiltonian, focusing our
attention on the geometric aspects of the problem.
| quant-ph | recently bender et al have considered the quantum brachistochrone problem for the nonhermitian cal ptsymmetric quantum system and have shown that the optimal time evolution required to transform a given initial state psi_irangle into a specific final state psi_frangle can be made arbitrarily small additionally it has been shown that finding the shortest possible time requires only the solution of the twodimensional problem for the quantum system governed by the effective hamiltonian acting in the subspace spanned by psi_irangle and psi_frangle in this paper we study a similar problem for the generic nonhermitian hamiltonian focusing our attention on the geometric aspects of the problem | [['recently', 'bender', 'et', 'al', 'have', 'considered', 'the', 'quantum', 'brachistochrone', 'problem', 'for', 'the', 'nonhermitian', 'cal', 'ptsymmetric', 'quantum', 'system', 'and', 'have', 'shown', 'that', 'the', 'optimal', 'time', 'evolution', 'required', 'to', 'transform', 'a', 'given', 'initial', 'state', 'psi_irangle', 'into', 'a', 'specific', 'final', 'state', 'psi_frangle', 'can', 'be', 'made', 'arbitrarily', 'small', 'additionally', 'it', 'has', 'been', 'shown', 'that', 'finding', 'the', 'shortest', 'possible', 'time', 'requires', 'only', 'the', 'solution', 'of', 'the', 'twodimensional', 'problem', 'for', 'the', 'quantum', 'system', 'governed', 'by', 'the', 'effective', 'hamiltonian', 'acting', 'in', 'the', 'subspace', 'spanned', 'by', 'psi_irangle', 'and', 'psi_frangle', 'in', 'this', 'paper', 'we', 'study', 'a', 'similar', 'problem', 'for', 'the', 'generic', 'nonhermitian', 'hamiltonian', 'focusing', 'our', 'attention', 'on', 'the', 'geometric', 'aspects', 'of', 'the', 'problem']] | [-0.12966132443165407, 0.12071350482292473, -0.06831180131528526, 0.01564375519170426, -0.048695951774716376, -0.1511319153616205, 0.006747129353461787, 0.3411450643185526, -0.25920879262499513, -0.2959589724056423, 0.09701427949243226, -0.23236749909818172, -0.2071473179291934, 0.196797639913857, -0.05354667511361186, 0.18394861446460709, 0.09276421410962939, 0.03943185615818948, -0.06515186806500424, -0.2612187357619405, 0.3339763144869357, 0.056238182346569375, 0.23675404540263117, 0.028136931851622648, 0.12889155871700494, 0.045685338210314515, 0.03710819776839344, 0.03642094834707677, -0.1227683214058925, 0.0692791356286034, 0.22848196271806956, 0.10682892672950402, 0.2741275791823864, -0.4335325210541487, -0.24278472372563556, 0.12858107749838382, 0.15849114868091418, 0.15728186215739698, -0.054189223643625155, -0.31437130821868775, 0.05000084264669567, -0.1546347132883966, -0.11546189588727429, -0.04186913065612316, 0.09391182360239327, -0.05953993286238983, -0.23593725714832545, 0.012380864120495971, 0.08384388457518072, -0.020537418061867357, -0.05143233879934996, -0.07131523373303934, -0.010797610569279642, 0.10195209946017712, -0.02082146529108286, 0.0413897447171621, 0.04109564528334886, -0.06680471059051342, -0.10276676550507545, 0.4116433496400714, 0.0018317302968353032, -0.23717950905673205, 0.1375983872532379, -0.06557269140612335, -0.12135373236611485, 0.0942107990477234, 0.14835762565024196, 0.13982509221881628, -0.14676784296520054, 0.17381154761533252, -0.07820095815695823, 0.1385163451731205, 0.04164778018370271, 0.04473795693134889, 0.17012740928679704, 0.14070415519177915, 0.08863816025666893, 0.15498801628942602, -0.0030811350839212537, -0.16955198546289466, -0.2419094076845795, -0.14232042348012328, -0.25740778871346265, 0.0745192727027461, -0.04181691375066293, -0.1353876441315515, 0.4478963655792177, 0.13293361900621675, 0.20872657069936396, -0.0021515669650398195, 0.22379461685195565, 0.19499752079485916, 0.019055490847676992, 0.08971693579573184, 0.2740782578941435, 0.10578642903128639, 0.09848355344031007, -0.2839184125815518, 0.04583982371725142, 0.10075843634083867] |
707.2737 | Black Holes in Cascading Theories: Confinement/Deconfinement Transition
and other Thermal Properties | We present numerical evidence for a transition between the Klebanov-Strassler
background and a solution describing a black hole in the class of cascading
solutions in the chirally restored phase. We also present a number of
properties of this solution, including the running of the coupling constant,
the viscosity to entropy ratio and the drag force on a quark moving in this
background.
| hep-th gr-qc hep-ph | we present numerical evidence for a transition between the klebanovstrassler background and a solution describing a black hole in the class of cascading solutions in the chirally restored phase we also present a number of properties of this solution including the running of the coupling constant the viscosity to entropy ratio and the drag force on a quark moving in this background | [['we', 'present', 'numerical', 'evidence', 'for', 'a', 'transition', 'between', 'the', 'klebanovstrassler', 'background', 'and', 'a', 'solution', 'describing', 'a', 'black', 'hole', 'in', 'the', 'class', 'of', 'cascading', 'solutions', 'in', 'the', 'chirally', 'restored', 'phase', 'we', 'also', 'present', 'a', 'number', 'of', 'properties', 'of', 'this', 'solution', 'including', 'the', 'running', 'of', 'the', 'coupling', 'constant', 'the', 'viscosity', 'to', 'entropy', 'ratio', 'and', 'the', 'drag', 'force', 'on', 'a', 'quark', 'moving', 'in', 'this', 'background']] | [-0.18670808792775195, 0.1145397690275023, -0.09369257416936659, 0.020903837893368495, -0.02241699923310549, -0.06954809175353617, 0.08541001339824195, 0.29965730227770343, -0.1900434612086223, -0.2948797215977984, 0.08359216364859152, -0.3105190962913536, -0.11905497888613853, 0.11671974792355491, 0.004896919468357679, 0.0529705484608008, -0.005937792390825287, 0.0245571605590803, -0.08645579905339307, -0.16182597923550696, 0.3444218511482881, 0.02485927443711027, 0.2604455498137301, 0.10395396000991065, 0.09374036754090939, -0.05698539521695385, 0.008232053849966295, 0.08539096470321378, -0.1580941125359987, 0.04596504746305366, 0.15673363527504638, 0.07501725854742672, 0.20261255267166323, -0.39931967205578284, -0.19764350982187617, 0.08167151252423684, 0.11917419380868875, 0.17505581118166447, -0.1650626364656003, -0.2586494499156552, 0.029541413134504712, -0.20024429613183584, -0.1522534253796743, -0.053037914334826415, 0.0371846393606956, -0.03340069913575726, -0.2862939067605522, 0.1128291856425236, 0.03571297206555403, -0.028262378755419877, -0.09834381959010516, -0.03622198047777338, 0.0016384959341056884, 0.08792173126412015, 0.14527133750098367, 0.0349123181715127, 0.1137444416752025, -0.22266741145604982, -0.06328998132789086, 0.3817363086967699, -0.13189707667521772, -0.2278899444086898, 0.18866685006557213, -0.1465168261389819, -0.11639095202178484, 0.1317290565930307, 0.20544160004224507, 0.17628640653715738, -0.11890892020516819, 0.09055781218546233, -0.0007701658253227511, 0.19021759874698135, 0.06848610565066338, -0.0075718795490120686, 0.26475497539485654, 0.18776414000369127, 0.04254068727154405, 0.18868853880332842, -0.07180303216145764, -0.09464110626328376, -0.37563936917051194, -0.16014382744868916, -0.12935486361346837, 0.07670605378676086, -0.16162408520270424, -0.2236622886341666, 0.4004826168079049, 0.14740659319044602, 0.21895220495700354, 0.05117860127000078, 0.28854648502273184, 0.11030835590715851, 0.0016630274551590123, 0.09391856465428587, 0.32884379127813923, 0.13217459319369687, 0.15038783069429618, -0.29327952719083233, -0.028384167625899275, 0.12906333490935784] |
707.2738 | Confinement from gluodynamics in curved space-time | We determine the static potential for a heavy quark-antiquark pair from
gluodynamics in curved space-time. Our calculation is done within the framework
of the gauge-invariant, path-dependent, variables formalism. The potential
energy is the sum of a Yukawa and a linear potential, leading to the
confinement of static charges.
| hep-th | we determine the static potential for a heavy quarkantiquark pair from gluodynamics in curved spacetime our calculation is done within the framework of the gaugeinvariant pathdependent variables formalism the potential energy is the sum of a yukawa and a linear potential leading to the confinement of static charges | [['we', 'determine', 'the', 'static', 'potential', 'for', 'a', 'heavy', 'quarkantiquark', 'pair', 'from', 'gluodynamics', 'in', 'curved', 'spacetime', 'our', 'calculation', 'is', 'done', 'within', 'the', 'framework', 'of', 'the', 'gaugeinvariant', 'pathdependent', 'variables', 'formalism', 'the', 'potential', 'energy', 'is', 'the', 'sum', 'of', 'a', 'yukawa', 'and', 'a', 'linear', 'potential', 'leading', 'to', 'the', 'confinement', 'of', 'static', 'charges']] | [-0.13081020768731833, 0.14137028565164655, -0.11041694769907433, 0.10380640584723248, -0.05011810036861183, -0.09584616030527589, 0.04533912016389271, 0.32355079244977486, -0.18722726517201713, -0.23643053998239338, -0.03562756394239841, -0.2877280714067941, -0.09698061412200332, 0.06334322256346543, 0.04036093972293505, 0.053690010080269225, -0.01931371047006299, 0.08403855294454843, -0.0957137029521012, -0.2028803724485139, 0.34745072639392066, 0.008698556999055048, 0.24049828834055612, 0.15829468079997847, 0.08116363024843547, 0.07202837015211117, -0.04644366554566659, 0.04204862149587522, -0.05413531655600915, 0.08445453185898562, 0.1633030831386956, 0.0111077866749838, 0.2113777949513557, -0.3949585332496402, -0.21815628896001726, 0.08601479350666826, 0.11093074510184427, 0.17357658138886714, -0.05466996016912162, -0.2735437137113574, 0.06440061823862682, -0.22546794176256904, -0.20407464489107952, -0.10694071526328723, 0.018246406534065802, -0.029109605277578037, -0.34271312997831654, 0.10082502046134323, -0.024092957930406556, -0.031304682624371104, -0.10100582469506965, -0.10293204808840528, -0.04725377542490605, 0.0899420168037371, 0.092775689738725, 0.08708288250879075, 0.15356393587232256, -0.14754031458869576, -0.1223163727845531, 0.42862581901135854, -0.07854112796485424, -0.2758727839682251, 0.11277106558918604, -0.12567301155650057, -0.06806218195803619, 0.10608819979825057, 0.1829591869560924, 0.1895249725190903, -0.2522147225099616, 0.1946207627564339, 0.004672895500940892, 0.09404647024348378, 0.06789134130910195, 0.024933189842461918, 0.2808475124184042, 0.15629167154353732, 0.010112643280687431, 0.1269913581199944, -0.01854241903250416, -0.18606558224807182, -0.4331825124487902, -0.13338379702516553, -0.15052435628604144, 0.04258645841036923, -0.15307306108267463, -0.21510811270369837, 0.44016782388401526, 0.09847079638469343, 0.13164358454135558, -1.7764784085253876e-05, 0.291367322128887, 0.1468504993172246, 0.08938180200251129, 0.05422229595327129, 0.26692674748968176, 0.17699551136077693, 0.13466007530223578, -0.25729892173452146, -0.07265726485638879, 0.12042566823462646] |
707.2739 | On Cycles in the Transcription Network of Saccharomyces cerevisiae | We investigate the cycles in the transcription network of S. cerevisiae.
Unlike a similar network of E. coli, it contains many cycles. We characterize
properties of these cycles and their place in the regulatory mechanism of the
cell. Almost all cycles in the transcription network of S. cerevisiae are
contained in a single strongly connected component, which we call LSCC (L for
``largest''), except for a single cycle of two transcription factors. Among
different physiological conditions, cell cycle has the most significant
relationship with LSCC, as the set of 64 transcription interactions that are
active in all phases of the cell cycle has overlap of 27 with the interactions
of LSCC (of which there are 49). Conversely, if we remove the interactions that
are active in all phases of the cell cycle (fewer than 1% of the total), the
LSCC would have only three nodes and 5 edges, 4 of which are active only in the
stress response subnetwork. LSCC has a special place in the topology of the
network and it can be used to define a natural hierarchy in the network; in
every physiological subnetwork LSCC plays a pivotal role. Apart from those
well-defined conditions, the transcription network of S. cerevisiae is devoid
of cycles. It was observed that two conditions that were studied and that have
no cycles of their own are exogenous: diauxic shift and DNA repair, while cell
cycle, sporulation are endogenous.
| q-bio.MN q-bio.GN | we investigate the cycles in the transcription network of s cerevisiae unlike a similar network of e coli it contains many cycles we characterize properties of these cycles and their place in the regulatory mechanism of the cell almost all cycles in the transcription network of s cerevisiae are contained in a single strongly connected component which we call lscc l for largest except for a single cycle of two transcription factors among different physiological conditions cell cycle has the most significant relationship with lscc as the set of 64 transcription interactions that are active in all phases of the cell cycle has overlap of 27 with the interactions of lscc of which there are 49 conversely if we remove the interactions that are active in all phases of the cell cycle fewer than 1 of the total the lscc would have only three nodes and 5 edges 4 of which are active only in the stress response subnetwork lscc has a special place in the topology of the network and it can be used to define a natural hierarchy in the network in every physiological subnetwork lscc plays a pivotal role apart from those welldefined conditions the transcription network of s cerevisiae is devoid of cycles it was observed that two conditions that were studied and that have no cycles of their own are exogenous diauxic shift and dna repair while cell cycle sporulation are endogenous | [['we', 'investigate', 'the', 'cycles', 'in', 'the', 'transcription', 'network', 'of', 's', 'cerevisiae', 'unlike', 'a', 'similar', 'network', 'of', 'e', 'coli', 'it', 'contains', 'many', 'cycles', 'we', 'characterize', 'properties', 'of', 'these', 'cycles', 'and', 'their', 'place', 'in', 'the', 'regulatory', 'mechanism', 'of', 'the', 'cell', 'almost', 'all', 'cycles', 'in', 'the', 'transcription', 'network', 'of', 's', 'cerevisiae', 'are', 'contained', 'in', 'a', 'single', 'strongly', 'connected', 'component', 'which', 'we', 'call', 'lscc', 'l', 'for', 'largest', 'except', 'for', 'a', 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'in', 'every', 'physiological', 'subnetwork', 'lscc', 'plays', 'a', 'pivotal', 'role', 'apart', 'from', 'those', 'welldefined', 'conditions', 'the', 'transcription', 'network', 'of', 's', 'cerevisiae', 'is', 'devoid', 'of', 'cycles', 'it', 'was', 'observed', 'that', 'two', 'conditions', 'that', 'were', 'studied', 'and', 'that', 'have', 'no', 'cycles', 'of', 'their', 'own', 'are', 'exogenous', 'diauxic', 'shift', 'and', 'dna', 'repair', 'while', 'cell', 'cycle', 'sporulation', 'are', 'endogenous']] | [-0.19853494190664978, 0.16056005889918254, 0.01924618556609236, 0.02977187436993552, 0.01942975292049097, -0.13259794188364712, 0.08355953851380711, 0.39505827026088025, -0.22049348437736196, -0.2782433902498979, 0.07974731438117345, -0.28141604791167446, -0.21179041868362591, 0.1650726902760361, -0.05089237524062898, -0.044832276958146504, 0.08184425535077379, 0.09821812063111739, 0.06893038875934224, -0.22982052067110023, 0.2586353647302569, 0.013583612687225584, 0.2390229868214334, 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-0.0700079970667679, 0.15419775620692328, 0.1294777333040875, 0.009095039984451034, 0.16272944853275637, 0.19299364805502525, 0.06194693383928742, 0.09339938584257326, -0.09904420315602377, -0.0662627479863129, -0.265786854522735, -0.12325851615608713, -0.12925240449963005, 0.04492844117388821, -0.11543431672146534, -0.159105144289837, 0.4410889649150681, 0.07148336424720218, 0.2047152057238992, 0.014068491516471743, 0.18344656648094676, 0.020970756289284413, 0.12858756866359117, 0.05482158887314017, 0.22900064413156754, 0.09111212557358549, 0.04990804318573428, -0.21042982419119668, 0.1223436049264286, 0.048816279650622595] |
707.274 | Mass, radius, and composition of the outer crust of nonaccreting cold
neutron stars | The properties and composition of the outer crust of nonaccreting cold
neutron stars are studied by applying the model of Baym, Pethick, and
Sutherland, which was extended by including higher order corrections of the
atomic binding, screening, exchange and zero-point energy. The most recent
experimental nuclear data from the atomic mass table of Audi, Wapstra, and
Thibault from 2003 is used. Extrapolation to the drip line is utilized by
various state-of-the-art theoretical nuclear models (finite range droplet,
relativistic nuclear field and non-relativistic Skyrme Hartree-Fock
parameterizations). The different nuclear models are compared with respect to
the mass and radius of the outer crust for different neutron star
configurations and the nuclear compositions of the outer crust.
| astro-ph nucl-th | the properties and composition of the outer crust of nonaccreting cold neutron stars are studied by applying the model of baym pethick and sutherland which was extended by including higher order corrections of the atomic binding screening exchange and zeropoint energy the most recent experimental nuclear data from the atomic mass table of audi wapstra and thibault from 2003 is used extrapolation to the drip line is utilized by various stateoftheart theoretical nuclear models finite range droplet relativistic nuclear field and nonrelativistic skyrme hartreefock parameterizations the different nuclear models are compared with respect to the mass and radius of the outer crust for different neutron star configurations and the nuclear compositions of the outer crust | [['the', 'properties', 'and', 'composition', 'of', 'the', 'outer', 'crust', 'of', 'nonaccreting', 'cold', 'neutron', 'stars', 'are', 'studied', 'by', 'applying', 'the', 'model', 'of', 'baym', 'pethick', 'and', 'sutherland', 'which', 'was', 'extended', 'by', 'including', 'higher', 'order', 'corrections', 'of', 'the', 'atomic', 'binding', 'screening', 'exchange', 'and', 'zeropoint', 'energy', 'the', 'most', 'recent', 'experimental', 'nuclear', 'data', 'from', 'the', 'atomic', 'mass', 'table', 'of', 'audi', 'wapstra', 'and', 'thibault', 'from', '2003', 'is', 'used', 'extrapolation', 'to', 'the', 'drip', 'line', 'is', 'utilized', 'by', 'various', 'stateoftheart', 'theoretical', 'nuclear', 'models', 'finite', 'range', 'droplet', 'relativistic', 'nuclear', 'field', 'and', 'nonrelativistic', 'skyrme', 'hartreefock', 'parameterizations', 'the', 'different', 'nuclear', 'models', 'are', 'compared', 'with', 'respect', 'to', 'the', 'mass', 'and', 'radius', 'of', 'the', 'outer', 'crust', 'for', 'different', 'neutron', 'star', 'configurations', 'and', 'the', 'nuclear', 'compositions', 'of', 'the', 'outer', 'crust']] | [-0.00754382039177353, 0.1922156749698131, -0.06964809864799937, 0.11380968968100522, -0.04805152953966804, -0.045491598975723205, 0.020034171881802055, 0.3275292565803165, -0.19921546782184715, -0.3508974711840932, 0.04657365180875944, -0.2825659409975228, 0.038035208419086815, 0.17850341035012643, 0.01967977919494328, 0.06944334987733189, 0.027669248246061415, 0.027907728970698688, -0.12755670931554683, -0.17810841628006133, 0.3392408615848778, 0.08735250275096168, 0.19060399243203194, 0.06621683358376765, -0.00900028216065434, -0.029875112266239266, -0.001896290213841459, -0.017513530308623678, -0.16439614551060874, 0.12471251629454934, 0.22422861199017421, 0.04820328407475482, 0.13245865838683168, -0.4791620256136293, -0.23095248608809452, 0.03910872070118785, 0.07480423643466329, 0.10598116470399596, -0.04803706857213832, -0.26933559453033884, 0.03561752312209295, -0.29991085611931656, -0.1353266172313496, -0.06095708006911951, 0.04583892413394769, 0.1103810552376039, -0.22696538724653098, 0.09784467609538494, 0.03598975001469902, 0.0375564303573059, -0.18647191979436448, -0.2383285722290368, -0.03802668801812536, 0.07843864735053933, 0.05098581235835572, 0.07786050349392969, 0.21044426278170683, -0.14051558541376954, -0.03744257290078246, 0.4140195507394231, -0.034695010110938354, -0.05954095270565671, 0.18777357459716174, -0.15726195342798271, -0.07955755655370329, 0.1349398204003987, 0.12313065935412179, 0.1347972215153277, -0.16286492555037788, 0.09672579189772597, -0.04633345358053465, 0.16283236851348826, 0.08016455715279217, -0.022162846751187158, 0.23310189843582718, 0.1566447797636299, -0.024161260413086933, 0.07266130377740963, -0.18234568633463072, -0.14325860371084317, -0.23805847224253027, -0.028948517361372387, -0.11999917602085548, -0.01705945002765435, -0.09670446675749111, -0.09205500878717589, 0.3542522139604325, 0.06516377363232491, 0.13182261530309916, -0.044681398731494404, 0.26813763458200773, 0.06347125179903662, 0.10565852279086475, 0.09590006693387809, 0.29679692564127236, 0.2757701976609457, 0.05717217701527735, -0.33725415279116966, 0.027367535967420302, 0.07539160668687976] |
707.2741 | Equidistribution of negative statistics and quotients of Coxeter groups
of type B and D | We generalize some identities and q-identities previously known for the
symmetric group to Coxeter groups of type B and D. The extended results include
theorems of Foata and Sch\"utzenberger, Gessel, and Roselle on various
distributions of inversion number, major index, and descent number. In order to
show our results we provide caracterizations of the systems of minimal coset
representatives of Coxeter groups of type B and D.
| math.CO | we generalize some identities and qidentities previously known for the symmetric group to coxeter groups of type b and d the extended results include theorems of foata and schutzenberger gessel and roselle on various distributions of inversion number major index and descent number in order to show our results we provide caracterizations of the systems of minimal coset representatives of coxeter groups of type b and d | [['we', 'generalize', 'some', 'identities', 'and', 'qidentities', 'previously', 'known', 'for', 'the', 'symmetric', 'group', 'to', 'coxeter', 'groups', 'of', 'type', 'b', 'and', 'd', 'the', 'extended', 'results', 'include', 'theorems', 'of', 'foata', 'and', 'schutzenberger', 'gessel', 'and', 'roselle', 'on', 'various', 'distributions', 'of', 'inversion', 'number', 'major', 'index', 'and', 'descent', 'number', 'in', 'order', 'to', 'show', 'our', 'results', 'we', 'provide', 'caracterizations', 'of', 'the', 'systems', 'of', 'minimal', 'coset', 'representatives', 'of', 'coxeter', 'groups', 'of', 'type', 'b', 'and', 'd']] | [-0.1423054737405795, 0.07766741086644205, -0.05471470115254774, 0.05676225126918518, -0.08631252934874008, -0.1472320727383097, 0.06287950315428051, 0.32570424920766416, -0.27103578070686624, -0.31455568100015324, 0.11361142558885287, -0.25640970855161094, -0.15573747362941504, 0.21231298772335955, -0.14115689229220152, -0.002874228055588901, -0.0026139181912488616, 0.053308237834822976, -0.06456701343907326, -0.30817860339514236, 0.33430136369089736, -0.04702873457448952, 0.2056446005308041, 0.01816296654711054, 0.014047465872753299, 0.0450599381460272, -0.12979092899794606, -0.015902582697118774, -0.14940683924677697, 0.14118884905297874, 0.22493618254719133, 0.11606844571757723, 0.15354041144900926, -0.3422627232150372, -0.12839469609951432, 0.1518918961925065, 0.12823774489560025, 0.05831742832775821, -0.07106075078340698, -0.29986068245136377, 0.11066781224287821, -0.21019446739757602, -0.17980217840522528, -0.053202541770808624, 0.09899615282616155, 0.08076135151328123, -0.2563802223144607, 0.0493825520388782, 0.12192792836294482, 0.10161979953673753, -0.03461615211386798, -0.21673534793609922, -0.04402755933044704, 0.13643985410277365, 0.03231243172547582, -0.041696205022603725, 0.03102222583468326, -0.07407793495804071, -0.19028433169605155, 0.3764324394252264, -0.002307024764983604, -0.18541136787583432, 0.2033911623117147, -0.16714280683377045, -0.20933242164777988, 0.07445639527092378, 0.158858666873791, 0.1470170130275867, -0.029160471153304432, 0.11205116476842457, -0.13930056531998244, 0.056411887199801364, 0.10279987288187399, 0.0011754318450887997, 0.042211815267695456, 0.006186163941906257, 0.024881593819538302, 0.15303249961245013, -0.009007798405505266, -0.021744823379611426, -0.32735820106146013, -0.20810071058451396, -0.09979628696755478, 0.053248704693308384, -0.1430692717739007, -0.13781379305080257, 0.3975921531461857, 0.07830376346299256, 0.13178171957208012, 0.1183676618736971, 0.1108562503447474, 0.006472001891145765, 0.0910386802349945, 0.04996182200865763, 0.09337745169680355, 0.26952110617562675, -0.01757246559260018, -0.18282660748809576, -0.006723128929452011, 0.22971342848331638] |
707.2742 | Description of double beta decay within continuum-QRPA | A method to calculate the nuclear double beta decay ($2\nu\beta\beta$- and
$0\nu\beta\beta$-) amplitudes within the continuum random phase approximation
(cQRPA) is formulated. Calculations of the $\beta\beta$ transition amplitudes
within the cQRPA are performed for ^{76}Ge, ^{100}Mo and ^{130}Te. A rather
simple nuclear Hamiltonian consisting of phenomenological mean field and
zero-range residual particle-hole and particle-particle interaction is used.
The calculated M^{2\nu} are almost not affected when the single-particle
continuum is taken into account. At the same time, a regular suppression of the
$0\nu\beta\beta$-amplitude is found that can be associated with additional
ground state correlations due to collective states in the continuum. It is
expected that future inclusion of the nucleon pairing in the single-particle
continuum will somewhat compensate the suppression.
| nucl-th | a method to calculate the nuclear double beta decay 2nubetabeta and 0nubetabeta amplitudes within the continuum random phase approximation cqrpa is formulated calculations of the betabeta transition amplitudes within the cqrpa are performed for 76ge 100mo and 130te a rather simple nuclear hamiltonian consisting of phenomenological mean field and zerorange residual particlehole and particleparticle interaction is used the calculated m2nu are almost not affected when the singleparticle continuum is taken into account at the same time a regular suppression of the 0nubetabetaamplitude is found that can be associated with additional ground state correlations due to collective states in the continuum it is expected that future inclusion of the nucleon pairing in the singleparticle continuum will somewhat compensate the suppression | [['a', 'method', 'to', 'calculate', 'the', 'nuclear', 'double', 'beta', 'decay', '2nubetabeta', 'and', '0nubetabeta', 'amplitudes', 'within', 'the', 'continuum', 'random', 'phase', 'approximation', 'cqrpa', 'is', 'formulated', 'calculations', 'of', 'the', 'betabeta', 'transition', 'amplitudes', 'within', 'the', 'cqrpa', 'are', 'performed', 'for', '76ge', '100mo', 'and', '130te', 'a', 'rather', 'simple', 'nuclear', 'hamiltonian', 'consisting', 'of', 'phenomenological', 'mean', 'field', 'and', 'zerorange', 'residual', 'particlehole', 'and', 'particleparticle', 'interaction', 'is', 'used', 'the', 'calculated', 'm2nu', 'are', 'almost', 'not', 'affected', 'when', 'the', 'singleparticle', 'continuum', 'is', 'taken', 'into', 'account', 'at', 'the', 'same', 'time', 'a', 'regular', 'suppression', 'of', 'the', '0nubetabetaamplitude', 'is', 'found', 'that', 'can', 'be', 'associated', 'with', 'additional', 'ground', 'state', 'correlations', 'due', 'to', 'collective', 'states', 'in', 'the', 'continuum', 'it', 'is', 'expected', 'that', 'future', 'inclusion', 'of', 'the', 'nucleon', 'pairing', 'in', 'the', 'singleparticle', 'continuum', 'will', 'somewhat', 'compensate', 'the', 'suppression']] | [-0.08097046003516378, 0.24539384396810984, -0.09732063811930732, 0.15580101851634842, 0.025180827304399734, -0.12874265026766807, 0.042085479126022805, 0.35804843921856633, -0.20856185469391017, -0.21959783875078348, -0.006629401328170608, -0.28578422215349714, -0.05772605344075067, 0.12258916763901903, 0.08106499552678574, 0.035826671326629304, 0.04716450737684901, 0.051439616001704866, -0.10191136223649414, -0.16895643112466446, 0.26454573132073633, 0.07839124149177223, 0.23668147901731446, 0.09628764985044937, -0.009590256259453499, 0.03763054421669322, -0.022546219504498557, -0.019959899926044303, -0.07202243243365705, 0.04064928887739119, 0.26488153919916807, 0.010194829279749558, 0.1865139136307648, -0.42825444991266803, -0.16629825226545078, 0.11120068447279005, 0.16875107919171067, 0.12664213135902738, 0.010057398688112354, -0.3352093335225022, 0.042012910512657355, -0.21236385095960877, -0.15994385942206557, -0.09133980580573452, 0.01860394118281467, -0.0011084865104278613, -0.30681397370464203, 0.0925321825860261, 0.0022384383302214072, -0.01291306706900349, -0.08791025598726139, -0.20615198311861604, -0.0044822849048269464, 0.09567125208183104, 0.041436378145590425, 0.06167560431239163, 0.1666343857339535, -0.11409807002878394, -0.07061266461146418, 0.4007029261335666, -0.042888871239546426, -0.1475992804826719, 0.1047421528893555, -0.18016548234776691, -0.10117988163155728, 0.2518823856050309, 0.10389858236584555, 0.033973084626205526, -0.1750445611407862, 0.10596930029488907, 0.007130736139891991, 0.20614936808726333, 0.016409566918998187, 0.06626228272015679, 0.17889090241655578, 0.1735823233150235, -0.00036773625118979094, 0.08445082169230866, -0.1464706754080092, -0.13423770891727302, -0.3449541156758265, -0.06129154489889484, -0.17050457684772796, 0.062334057347219765, -0.03203005364098474, -0.15285552786020884, 0.3902826301416318, 0.04290391139862738, 0.14780611045265185, 0.00676751481409281, 0.25765967345796525, 0.17131291069331225, 0.08996158614975465, 0.014699939376441762, 0.3074500762761153, 0.19648507741633162, 0.03016360079998086, -0.3059231524138936, 0.06999745061781643, 0.06344184548802802] |
707.2743 | Charge Order Superstructure with Integer Iron Valence in Fe2OBO3 | Solution-grown single crystals of Fe2OBO3 were characterized by specific
heat, Mossbauer spectroscopy, and x-ray diffraction. A peak in the specific
heat at 340 K indicates the onset of charge order. Evidence for a doubling of
the unit cell at low temperature is presented. Combining structural refinement
of diffraction data and Mossbauer spectra, domains with diagonal charge order
are established. Bond-valence-sum analysis indicates integer valence states of
the Fe ions in the charge ordered phase, suggesting Fe2OBO3 is the clearest
example of ionic charge order so far.
| cond-mat.str-el cond-mat.mtrl-sci | solutiongrown single crystals of fe2obo3 were characterized by specific heat mossbauer spectroscopy and xray diffraction a peak in the specific heat at 340 k indicates the onset of charge order evidence for a doubling of the unit cell at low temperature is presented combining structural refinement of diffraction data and mossbauer spectra domains with diagonal charge order are established bondvalencesum analysis indicates integer valence states of the fe ions in the charge ordered phase suggesting fe2obo3 is the clearest example of ionic charge order so far | [['solutiongrown', 'single', 'crystals', 'of', 'fe2obo3', 'were', 'characterized', 'by', 'specific', 'heat', 'mossbauer', 'spectroscopy', 'and', 'xray', 'diffraction', 'a', 'peak', 'in', 'the', 'specific', 'heat', 'at', '340', 'k', 'indicates', 'the', 'onset', 'of', 'charge', 'order', 'evidence', 'for', 'a', 'doubling', 'of', 'the', 'unit', 'cell', 'at', 'low', 'temperature', 'is', 'presented', 'combining', 'structural', 'refinement', 'of', 'diffraction', 'data', 'and', 'mossbauer', 'spectra', 'domains', 'with', 'diagonal', 'charge', 'order', 'are', 'established', 'bondvalencesum', 'analysis', 'indicates', 'integer', 'valence', 'states', 'of', 'the', 'fe', 'ions', 'in', 'the', 'charge', 'ordered', 'phase', 'suggesting', 'fe2obo3', 'is', 'the', 'clearest', 'example', 'of', 'ionic', 'charge', 'order', 'so', 'far']] | [-0.1321478254746559, 0.2162084993737111, 0.011761598795284193, 0.019734247547011217, -0.025401793661267432, -0.11631395462034054, 0.15266642564377034, 0.39996299416173337, -0.2377979210902785, -0.3028268635619518, 0.049233208331929214, -0.4043479338288307, -0.03210154674990579, 0.14615889184507216, 0.06826772965317549, 0.03254843149659072, -0.043142730554262564, 0.016613443528280356, -0.10540469334092598, -0.14038227309559492, 0.26081313179916876, 0.056444475118633965, 0.29814911878472844, 0.11487003457515912, 0.06848306497586025, -0.012918218331368164, 0.006470687091783728, 0.04461589577299174, -0.13086572986875855, 0.014928564236385661, 0.2877402208139037, -0.03539490853544584, 0.16116736690123934, -0.39590887153564497, -0.23618219000744894, -0.010426102910017552, 0.11101460900309301, 0.07399078299897875, -0.09122065646028374, -0.19646714489127315, 0.06319126317299209, -0.07993860268250627, -0.13188624887207392, -0.10287124417765542, -0.029697019314436718, 0.04007488775857573, -0.27675192253014375, 0.14743402497951202, 0.08022671715941193, 0.17412322621012843, -0.1456992674543154, -0.15662587527185678, -0.0878708868363309, 0.040935173327493114, 0.008866810835464749, 0.04721386368971232, 0.14613138783051696, -0.024627140587802198, -0.11326824572630399, 0.32848075752926253, -0.007848418121453548, -0.016814333922771173, 0.12318058974017541, -0.27270237103559425, -0.10321947088638364, 0.22769034623579923, 0.028940139576619447, 0.12936831373439797, -0.13838733721871016, 0.02271763198409327, -0.008520764764398336, 0.2471728722434924, 0.11517266185715967, 0.065074767530246, 0.24981270786266513, 0.1875471251293865, -0.007674647809201201, 0.164810887142626, -0.16850255691273094, -0.028238520199476286, -0.22694485487286434, -0.17046214382673158, -0.21370421132874176, 0.04828400464950476, -0.09757579609089759, -0.13238310614644094, 0.35620262630305494, 0.03560245925659411, 0.15719084099454936, -0.1015771030675793, 0.23600618125258965, 0.11066953278807273, 0.07824964435543692, 0.015398847291159421, 0.19726826774692813, 0.1935597864347835, 0.200135997128348, -0.31692869976422816, 0.06301124635434081, 0.0434572861508228] |
707.2744 | Simulation of the Formation and Morphology of Ice Mantles on
Interstellar Grains | Although still poorly understood, the chemistry that occurs on the surfaces
of interstellar dust particles profoundly affects the growth of molecules in
the interstellar medium. An important set of surface reactions produces icy
mantles of many monolayers in cold and dense regions. The monolayers are
dominated by water ice, but also contain CO, CO_{2}, and occasionally methanol
as well as minor constituents. In this paper, the rate of production of
water-ice dominated mantles is calculated for different physical conditions of
interstellar clouds and for the first time images of the morphology of
interstellar ices are presented. For this purpose, the continuous-time
random-walk Monte Carlo simulation technique has been used. The visual
extinction, density, and gas and grain temperatures are varied. It is shown
that our stochastic approach can reproduce the important observation that ice
mantles only grow in the denser regions.
| astro-ph | although still poorly understood the chemistry that occurs on the surfaces of interstellar dust particles profoundly affects the growth of molecules in the interstellar medium an important set of surface reactions produces icy mantles of many monolayers in cold and dense regions the monolayers are dominated by water ice but also contain co co_2 and occasionally methanol as well as minor constituents in this paper the rate of production of waterice dominated mantles is calculated for different physical conditions of interstellar clouds and for the first time images of the morphology of interstellar ices are presented for this purpose the continuoustime randomwalk monte carlo simulation technique has been used the visual extinction density and gas and grain temperatures are varied it is shown that our stochastic approach can reproduce the important observation that ice mantles only grow in the denser regions | [['although', 'still', 'poorly', 'understood', 'the', 'chemistry', 'that', 'occurs', 'on', 'the', 'surfaces', 'of', 'interstellar', 'dust', 'particles', 'profoundly', 'affects', 'the', 'growth', 'of', 'molecules', 'in', 'the', 'interstellar', 'medium', 'an', 'important', 'set', 'of', 'surface', 'reactions', 'produces', 'icy', 'mantles', 'of', 'many', 'monolayers', 'in', 'cold', 'and', 'dense', 'regions', 'the', 'monolayers', 'are', 'dominated', 'by', 'water', 'ice', 'but', 'also', 'contain', 'co', 'co_2', 'and', 'occasionally', 'methanol', 'as', 'well', 'as', 'minor', 'constituents', 'in', 'this', 'paper', 'the', 'rate', 'of', 'production', 'of', 'waterice', 'dominated', 'mantles', 'is', 'calculated', 'for', 'different', 'physical', 'conditions', 'of', 'interstellar', 'clouds', 'and', 'for', 'the', 'first', 'time', 'images', 'of', 'the', 'morphology', 'of', 'interstellar', 'ices', 'are', 'presented', 'for', 'this', 'purpose', 'the', 'continuoustime', 'randomwalk', 'monte', 'carlo', 'simulation', 'technique', 'has', 'been', 'used', 'the', 'visual', 'extinction', 'density', 'and', 'gas', 'and', 'grain', 'temperatures', 'are', 'varied', 'it', 'is', 'shown', 'that', 'our', 'stochastic', 'approach', 'can', 'reproduce', 'the', 'important', 'observation', 'that', 'ice', 'mantles', 'only', 'grow', 'in', 'the', 'denser', 'regions']] | [-0.04069653933443433, 0.19512379785484868, -0.046962981624198506, 0.05681723338082856, 0.026848247890684303, -0.04148531852435347, -0.001755696330846994, 0.4266952226196039, -0.2504442337213467, -0.3020885050534568, 0.05313697850318454, -0.24832374027249873, -0.11616015293230245, 0.15086000690737025, -0.012345619103375902, -0.009621805001169126, 0.0330933242976824, -0.12973985282567177, 0.03229063599129333, -0.2786611371264126, 0.268556531352744, 0.1000616008561131, 0.18052346613720482, 0.10344756311730396, 0.059845301064213485, -0.13419976946072165, -0.038941348094991834, -0.034930389810432776, -0.1768984296383375, 0.07959536312301545, 0.25187024440457845, 0.07197667738333582, 0.151324660474342, -0.5211918115193117, -0.30506323258795426, 0.07785634051162935, 0.1683033284768776, 0.09566740842919189, -0.0712101244877905, -0.2231582481139967, -0.004223239509032127, -0.13269775602735367, -0.14013003856802347, 0.013524086492017228, 0.05240141694575998, 0.021312543255415685, -0.20651018519304587, 0.10466916939794377, 0.04466362507165086, 0.07543439256417044, -0.11519437691143958, -0.17375679961108464, -0.14291926831872276, 0.09367916145830923, 0.02493021355245051, 0.0029576658502432473, 0.29840962547835304, -0.1409706721587622, 0.021006244168689486, 0.4748026499432241, -0.07671156083068527, -0.07343135576972619, 0.29631830457967856, -0.18713746281466215, -0.16786927464319037, 0.26532478328358305, 0.1560001801435195, 0.15723780664476625, -0.18926641459953278, 0.024779615819318788, -0.06871428532634881, 0.15163480830940265, 0.08920206442303585, 0.04886760039862695, 0.26976939325769106, 0.20195083713971396, 0.012405662625245353, 0.12477471762343395, -0.13258653151941427, -0.11485134305247495, -0.20012726238268222, -0.20677003169850056, -0.1993104325184691, 0.007591093129128324, -0.1121117162747525, -0.14031521867897118, 0.2670512576884729, 0.13925948289903342, 0.16977467060960988, -0.02441880363865313, 0.3104103930188832, 0.036990304370282764, 0.05930198848343302, 0.0870945649089437, 0.25804836300353634, 0.12735988219030836, 0.11058586278718942, -0.209641364308946, 0.22417173572115812, 0.007353151121328698] |
707.2745 | On the renormalization of the bosonized multi-flavor Schwinger model | The phase structure of the bosonized multi-flavor Schwinger model is
investigated by means of the differential renormalization group (RG) method. In
the limit of small fermion mass the linearized RG flow is sufficient to
determine the low-energy behavior of the N-flavor model, if it has been rotated
by a suitable rotation in the internal space. For large fermion mass, the exact
RG flow has been solved numerically. The low-energy behavior of the
multi-flavor model is rather different depending on whether N=1 or N>1, where N
is the number of flavors. For N>1 the reflection symmetry always suffers
breakdown in both the weak and strong coupling regimes, in contrary to the N=1
case, where it remains unbroken in the strong coupling phase.
| hep-th | the phase structure of the bosonized multiflavor schwinger model is investigated by means of the differential renormalization group rg method in the limit of small fermion mass the linearized rg flow is sufficient to determine the lowenergy behavior of the nflavor model if it has been rotated by a suitable rotation in the internal space for large fermion mass the exact rg flow has been solved numerically the lowenergy behavior of the multiflavor model is rather different depending on whether n1 or n1 where n is the number of flavors for n1 the reflection symmetry always suffers breakdown in both the weak and strong coupling regimes in contrary to the n1 case where it remains unbroken in the strong coupling phase | [['the', 'phase', 'structure', 'of', 'the', 'bosonized', 'multiflavor', 'schwinger', 'model', 'is', 'investigated', 'by', 'means', 'of', 'the', 'differential', 'renormalization', 'group', 'rg', 'method', 'in', 'the', 'limit', 'of', 'small', 'fermion', 'mass', 'the', 'linearized', 'rg', 'flow', 'is', 'sufficient', 'to', 'determine', 'the', 'lowenergy', 'behavior', 'of', 'the', 'nflavor', 'model', 'if', 'it', 'has', 'been', 'rotated', 'by', 'a', 'suitable', 'rotation', 'in', 'the', 'internal', 'space', 'for', 'large', 'fermion', 'mass', 'the', 'exact', 'rg', 'flow', 'has', 'been', 'solved', 'numerically', 'the', 'lowenergy', 'behavior', 'of', 'the', 'multiflavor', 'model', 'is', 'rather', 'different', 'depending', 'on', 'whether', 'n1', 'or', 'n1', 'where', 'n', 'is', 'the', 'number', 'of', 'flavors', 'for', 'n1', 'the', 'reflection', 'symmetry', 'always', 'suffers', 'breakdown', 'in', 'both', 'the', 'weak', 'and', 'strong', 'coupling', 'regimes', 'in', 'contrary', 'to', 'the', 'n1', 'case', 'where', 'it', 'remains', 'unbroken', 'in', 'the', 'strong', 'coupling', 'phase']] | [-0.18388025187776608, 0.21742292448170175, -0.0762721997751154, 0.06263003095384102, -0.041197698070736956, -0.16430176469335747, 0.014395779768420646, 0.32419568303325946, -0.22691272905727555, -0.2804180139768099, 0.09560647214212539, -0.2547888451848518, -0.11101995684853024, 0.10004830550525554, 0.028817195603085204, 0.0516513081013479, -0.04511801326023954, 0.10187227282411426, -0.09259907639593132, -0.2172435289422004, 0.3266229411925782, -0.009536510733656647, 0.3050782714993501, 0.05666550304278854, 0.07123135470146359, 0.01664351486727934, 0.049841004156330526, 0.01132620354967138, -0.10020476990294727, -0.00040356388069258246, 0.17754721656164602, 0.009010289118371227, 0.19440591435548504, -0.3944415669919045, -0.21324499458659532, 0.08601666496073719, 0.185169130380454, 0.1179390837311406, -0.034925818406738154, -0.2466404065008714, 0.075051971734309, -0.16278059067866527, -0.1855352252744877, -0.06158051310368806, 0.017215015228129616, -0.08974017825531812, -0.28738325561660394, 0.09241336743031775, 0.006108002798739544, 0.04548618086046791, -0.009805242153854409, -0.04581856641972299, -0.09948276497485224, 0.11172053681432524, 0.1316975286891565, 0.02112754475717887, 0.06408146762747072, -0.18715840923476748, -0.03671138849463468, 0.4266147382388061, -0.08221389533382309, -0.21466314752609278, 0.15360106280735455, -0.16236592097254085, -0.13123308512389906, 0.15323261193323048, 0.09711593966777167, 0.14733283772818312, -0.13445098007007403, 0.21470428948157874, -0.10366416751784234, 0.143019988563312, 0.031861927483446344, -0.004896720409516461, 0.1794617633173658, 0.16384233557426733, 0.03558391825803979, 0.09672396864033928, -0.0512518409797383, -0.1460169770885721, -0.30570926038502166, -0.09410662523351518, -0.1734382000189921, 0.07135832549480736, -0.12832496056902273, -0.1288224397234865, 0.3871287334871994, 0.1423829513186327, 0.17468520547532715, -0.01483851011596189, 0.25354348836189583, 0.16889714334720038, 0.05897373181559946, 0.07289283269647584, 0.2937357140212389, 0.15454516561763468, 0.047087956610528274, -0.33759037938646297, -0.027067039627581835, 0.15342359282923015] |
707.2746 | The primordial binary population II: Recovering the binary population
for intermediate mass stars in Sco OB2 | We characterize the binary population in the young and nearby OB association
Scorpius OB2 using available observations of visual, spectroscopic, and
astrometric binaries with intermediate-mass primaries. We take into account
observational biases by comparing the observations with simulated observations
of model associations. The available data indicate a large binary fraction (>
70% with 3sigma confidence), with a large probability that all intermediate
mass stars in Sco OB2 are part of a binary system. The binary systems have a
mass ratio distribution of the form f(q) ~ q^-0.4. Sco OB2 has a semi-major
axis distribution of the form f(log a) ~ constant (Opik's law), in the range
5-5e6 Rsun. The log-normal period distribution of Duquennoy & Mayor results in
too few spectroscopic binaries, even if the model binary fraction is 100%. Sco
OB2 is a young association with a low stellar density; its current population
is expected to be very similar to the primordial population. The fact that
practically all stars in Sco OB2 are part of a binary (or multiple) system
demonstrates that multiplicity is a fundamental factor in the star formation
process, at least for intermediate mass stars.
| astro-ph | we characterize the binary population in the young and nearby ob association scorpius ob2 using available observations of visual spectroscopic and astrometric binaries with intermediatemass primaries we take into account observational biases by comparing the observations with simulated observations of model associations the available data indicate a large binary fraction 70 with 3sigma confidence with a large probability that all intermediate mass stars in sco ob2 are part of a binary system the binary systems have a mass ratio distribution of the form fq q04 sco ob2 has a semimajor axis distribution of the form flog a constant opiks law in the range 55e6 rsun the lognormal period distribution of duquennoy mayor results in too few spectroscopic binaries even if the model binary fraction is 100 sco ob2 is a young association with a low stellar density its current population is expected to be very similar to the primordial population the fact that practically all stars in sco ob2 are part of a binary or multiple system demonstrates that multiplicity is a fundamental factor in the star formation process at least for intermediate mass stars | [['we', 'characterize', 'the', 'binary', 'population', 'in', 'the', 'young', 'and', 'nearby', 'ob', 'association', 'scorpius', 'ob2', 'using', 'available', 'observations', 'of', 'visual', 'spectroscopic', 'and', 'astrometric', 'binaries', 'with', 'intermediatemass', 'primaries', 'we', 'take', 'into', 'account', 'observational', 'biases', 'by', 'comparing', 'the', 'observations', 'with', 'simulated', 'observations', 'of', 'model', 'associations', 'the', 'available', 'data', 'indicate', 'a', 'large', 'binary', 'fraction', '70', 'with', '3sigma', 'confidence', 'with', 'a', 'large', 'probability', 'that', 'all', 'intermediate', 'mass', 'stars', 'in', 'sco', 'ob2', 'are', 'part', 'of', 'a', 'binary', 'system', 'the', 'binary', 'systems', 'have', 'a', 'mass', 'ratio', 'distribution', 'of', 'the', 'form', 'fq', 'q04', 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707.2747 | Magnetohydrodynamic properties of incompressible Meissner fluids | We consider a superconducting material that exists in the liquid state, more
precisely, in which the Meissner-Ochsenfeld effect persists in the liquid
state. First, we investigate how the shape of such a hypothetical Meissner
liquid will adapt to accomodate for an applied external field. In particular,
we analyse the case of a droplet of Meissner fluid, and compute the elongation
of the droplet and its quadrupole frequency as a function of the applied field.
Next, the influence of an applied field on the flow of the liquid is studied
for the case of a surface wave. We derive the dispersion relation for surface
waves on an incompressible Meissner fluid. We discuss some candidate
realizations of the Meissner fluids and for the case of a superconducting
colloid discuss which regime of wave lengths would be most affected by the
Meissner effect.
| cond-mat.supr-con | we consider a superconducting material that exists in the liquid state more precisely in which the meissnerochsenfeld effect persists in the liquid state first we investigate how the shape of such a hypothetical meissner liquid will adapt to accomodate for an applied external field in particular we analyse the case of a droplet of meissner fluid and compute the elongation of the droplet and its quadrupole frequency as a function of the applied field next the influence of an applied field on the flow of the liquid is studied for the case of a surface wave we derive the dispersion relation for surface waves on an incompressible meissner fluid we discuss some candidate realizations of the meissner fluids and for the case of a superconducting colloid discuss which regime of wave lengths would be most affected by the meissner effect | [['we', 'consider', 'a', 'superconducting', 'material', 'that', 'exists', 'in', 'the', 'liquid', 'state', 'more', 'precisely', 'in', 'which', 'the', 'meissnerochsenfeld', 'effect', 'persists', 'in', 'the', 'liquid', 'state', 'first', 'we', 'investigate', 'how', 'the', 'shape', 'of', 'such', 'a', 'hypothetical', 'meissner', 'liquid', 'will', 'adapt', 'to', 'accomodate', 'for', 'an', 'applied', 'external', 'field', 'in', 'particular', 'we', 'analyse', 'the', 'case', 'of', 'a', 'droplet', 'of', 'meissner', 'fluid', 'and', 'compute', 'the', 'elongation', 'of', 'the', 'droplet', 'and', 'its', 'quadrupole', 'frequency', 'as', 'a', 'function', 'of', 'the', 'applied', 'field', 'next', 'the', 'influence', 'of', 'an', 'applied', 'field', 'on', 'the', 'flow', 'of', 'the', 'liquid', 'is', 'studied', 'for', 'the', 'case', 'of', 'a', 'surface', 'wave', 'we', 'derive', 'the', 'dispersion', 'relation', 'for', 'surface', 'waves', 'on', 'an', 'incompressible', 'meissner', 'fluid', 'we', 'discuss', 'some', 'candidate', 'realizations', 'of', 'the', 'meissner', 'fluids', 'and', 'for', 'the', 'case', 'of', 'a', 'superconducting', 'colloid', 'discuss', 'which', 'regime', 'of', 'wave', 'lengths', 'would', 'be', 'most', 'affected', 'by', 'the', 'meissner', 'effect']] | [-0.16520761586975174, 0.1840771903145651, -0.09726337455545685, 0.05991551642655395, -0.05793024736589619, -0.07936448252294212, 0.029120407552857483, 0.31510903462767603, -0.2301016064452207, -0.2466832512590502, 0.08481260238082282, -0.23472928021427444, -0.14022725677516842, 0.1917023169026444, -0.012806621263734996, 0.00847582717002037, -0.055833577081960226, 0.054668929534299034, -0.08790008108896602, -0.18863281082594768, 0.3410080630864416, -0.0029308914872152466, 0.2885302330516944, 0.07272746058380497, 0.1082037665365663, 0.01934384194069675, 0.06598284656647593, 0.08412151531582432, -0.2031269025808537, 0.013962270811732326, 0.20597953637396652, 0.004584475141018629, 0.2016656614673723, -0.47257802242945346, -0.22865016571512178, 0.08780669168170009, 0.10811483632008145, 0.18249418531278414, -0.06546521503862875, -0.2664523237867148, 0.024406837667005934, -0.19089333805189068, -0.17953151041043125, -0.03688853958488575, 0.04439103488860253, 0.009712240032552341, -0.20669990997495397, 0.0808257246955431, 0.07993241798332228, 0.02720453459520026, -0.10465017811677951, -0.09300855147386236, -0.014269236410369299, 0.08070115879776754, 0.06671323897566513, 0.04845225214292961, 0.17435920620004514, -0.2243848799395242, -0.06425842454523913, 0.39257774467446976, -0.08097295465080866, -0.16906322155679976, 0.16128153786994517, -0.17244033972799247, -0.03863521677974079, 0.12426823220614876, 0.18970363144097582, 0.09849804192781449, -0.10181217849104932, 0.04694812807928039, -0.06735836926693861, 0.15384408994078902, 0.06104602149820754, -0.014117801575256245, 0.25685255084452885, 0.20556544044021782, 0.05319423753369067, 0.2174176061660546, -0.15038750060900513, -0.025385013206063636, -0.3051885796976941, -0.22996215885006158, -0.18674912781321576, 0.01277612530996391, -0.04061722434427273, -0.19190056253324395, 0.3965485942583265, 0.16708668378601682, 0.1520146642345935, -0.03447924139576831, 0.22151939251842642, 0.10139036817459522, 0.022058090195059776, 0.04696239343445216, 0.30701487044175985, 0.18362300253273653, 0.10980905457732401, -0.30735102980065027, 0.04292547459481284, 0.029116315693993654] |
707.2748 | Theory of gravitation theories: a no-progress report | Already in the 1970s there where attempts to present a set of ground rules,
sometimes referred to as a theory of gravitation theories, which theories of
gravity should satisfy in order to be considered viable in principle and,
therefore, interesting enough to deserve further investigation. From this
perspective, an alternative title of the present paper could be ``why are we
still unable to write a guide on how to propose viable alternatives to general
relativity?''. Attempting to answer this question, it is argued here that
earlier efforts to turn qualitative statements, such as the Einstein
Equivalence Principle, into quantitative ones, such as the metric postulates,
stand on rather shaky grounds -- probably contrary to popular belief -- as they
appear to depend strongly on particular representations of the theory. This
includes ambiguities in the identification of matter and gravitational fields,
dependence of frequently used definitions, such as those of the stress-energy
tensor or classical vacuum, on the choice of variables, etc. Various examples
are discussed and possible approaches to this problem are pointed out. In the
course of this study, several common misconceptions related to the various
forms of the Equivalence Principle, the use of conformal frames and equivalence
between theories are clarified.
| gr-qc astro-ph hep-th | already in the 1970s there where attempts to present a set of ground rules sometimes referred to as a theory of gravitation theories which theories of gravity should satisfy in order to be considered viable in principle and therefore interesting enough to deserve further investigation from this perspective an alternative title of the present paper could be why are we still unable to write a guide on how to propose viable alternatives to general relativity attempting to answer this question it is argued here that earlier efforts to turn qualitative statements such as the einstein equivalence principle into quantitative ones such as the metric postulates stand on rather shaky grounds probably contrary to popular belief as they appear to depend strongly on particular representations of the theory this includes ambiguities in the identification of matter and gravitational fields dependence of frequently used definitions such as those of the stressenergy tensor or classical vacuum on the choice of variables etc various examples are discussed and possible approaches to this problem are pointed out in the course of this study several common misconceptions related to the various forms of the equivalence principle the use of conformal frames and equivalence between theories are clarified | [['already', 'in', 'the', '1970s', 'there', 'where', 'attempts', 'to', 'present', 'a', 'set', 'of', 'ground', 'rules', 'sometimes', 'referred', 'to', 'as', 'a', 'theory', 'of', 'gravitation', 'theories', 'which', 'theories', 'of', 'gravity', 'should', 'satisfy', 'in', 'order', 'to', 'be', 'considered', 'viable', 'in', 'principle', 'and', 'therefore', 'interesting', 'enough', 'to', 'deserve', 'further', 'investigation', 'from', 'this', 'perspective', 'an', 'alternative', 'title', 'of', 'the', 'present', 'paper', 'could', 'be', 'why', 'are', 'we', 'still', 'unable', 'to', 'write', 'a', 'guide', 'on', 'how', 'to', 'propose', 'viable', 'alternatives', 'to', 'general', 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707.2749 | Black holes: interfacing the classical and the quantum | The central idea advocated in this paper is that {forming the black hole
horizon is attended with transition from the classical regime of evolution to
the quantum one}. We justify the following criterion for discriminating between
the classical and the quantum: {spontaneous creations and annihilations of
particle-antiparticle pairs are impossible in the classical world but possible
in the quantum world}. We show that it is sufficient to {change the overall
sign of the spacetime signature in the classical picture of field propagation
for it to be treated as its associated quantum picture}. To describe a
self-gravitating object at the last stage of its classical evolution, we
propose to use the Foldy--Wouthuysen representation of the Dirac equation in
curved spacetimes, and the Gozzi classical path integral. In both approaches,
maintaining the dynamics in the classical regime is controlled by
supersymmetry.
| gr-qc | the central idea advocated in this paper is that forming the black hole horizon is attended with transition from the classical regime of evolution to the quantum one we justify the following criterion for discriminating between the classical and the quantum spontaneous creations and annihilations of particleantiparticle pairs are impossible in the classical world but possible in the quantum world we show that it is sufficient to change the overall sign of the spacetime signature in the classical picture of field propagation for it to be treated as its associated quantum picture to describe a selfgravitating object at the last stage of its classical evolution we propose to use the foldywouthuysen representation of the dirac equation in curved spacetimes and the gozzi classical path integral in both approaches maintaining the dynamics in the classical regime is controlled by supersymmetry | [['the', 'central', 'idea', 'advocated', 'in', 'this', 'paper', 'is', 'that', 'forming', 'the', 'black', 'hole', 'horizon', 'is', 'attended', 'with', 'transition', 'from', 'the', 'classical', 'regime', 'of', 'evolution', 'to', 'the', 'quantum', 'one', 'we', 'justify', 'the', 'following', 'criterion', 'for', 'discriminating', 'between', 'the', 'classical', 'and', 'the', 'quantum', 'spontaneous', 'creations', 'and', 'annihilations', 'of', 'particleantiparticle', 'pairs', 'are', 'impossible', 'in', 'the', 'classical', 'world', 'but', 'possible', 'in', 'the', 'quantum', 'world', 'we', 'show', 'that', 'it', 'is', 'sufficient', 'to', 'change', 'the', 'overall', 'sign', 'of', 'the', 'spacetime', 'signature', 'in', 'the', 'classical', 'picture', 'of', 'field', 'propagation', 'for', 'it', 'to', 'be', 'treated', 'as', 'its', 'associated', 'quantum', 'picture', 'to', 'describe', 'a', 'selfgravitating', 'object', 'at', 'the', 'last', 'stage', 'of', 'its', 'classical', 'evolution', 'we', 'propose', 'to', 'use', 'the', 'foldywouthuysen', 'representation', 'of', 'the', 'dirac', 'equation', 'in', 'curved', 'spacetimes', 'and', 'the', 'gozzi', 'classical', 'path', 'integral', 'in', 'both', 'approaches', 'maintaining', 'the', 'dynamics', 'in', 'the', 'classical', 'regime', 'is', 'controlled', 'by', 'supersymmetry']] | [-0.11570050108307244, 0.12970873997614218, -0.12290229990848921, 0.10375072885358678, -0.06113182558286665, -0.11431365935604318, 0.012894316449882868, 0.32135395851008175, -0.2744716784218326, -0.2837582185756469, 0.05425312470617718, -0.2520217246348983, -0.14902632348104447, 0.1635510113399874, -0.05574870108883234, 0.03666353640332143, 0.01716719818153027, 0.07491272361274215, -0.06488210972157253, -0.23300174159416254, 0.35184633285752026, 0.0537318978694848, 0.26500570513915434, 0.006457077951737396, 0.10045091235546008, 0.022524512028726545, 0.004693522610688123, -0.0116718463478205, -0.10497138526113924, 0.08059801478478787, 0.2324476858627969, 0.12858476444228512, 0.22775031846907476, -0.42319560818968044, -0.21034728327388133, 0.10471840866038279, 0.1434437540339549, 0.16394678145593058, -0.04858032912960735, -0.2974374169362304, 0.08335332767413658, -0.1581660400353966, -0.15966877149944397, -0.023067123668295317, 0.0230557247464869, -0.06998494377467727, -0.19227315629899933, 0.11631303520171322, 0.09906750234633523, -0.021052172571164218, -0.05248423195882714, -0.0015607665198436682, 0.007177637454689197, 0.12688826393686992, 0.05865270780412939, 0.03169441720524776, 0.13468278532314615, -0.17730279014938496, -0.15340466612437065, 0.4097583184585623, -0.04847320255593977, -0.18292694440975354, 0.20258623949737978, -0.1841204664811232, -0.09118685348337327, 0.09320771769431514, 0.11802960393538671, 0.13164478349094483, -0.12996218888345512, 0.11099320139096497, -0.007881786972891701, 0.09554230996772, 0.05718573577114907, 0.04440519645594168, 0.2596476689009844, 0.13435377520036654, 0.029841004209457966, 0.14337641258801645, -0.0625826866113736, -0.20738428190816194, -0.3413919451902958, -0.20034265454750563, -0.18171555640520123, 0.08003220340048058, -0.05943893773139174, -0.15236445013231234, 0.36390264451071835, 0.1690550059644485, 0.17359721769943184, 0.0030295107702630153, 0.27194653754797427, 0.13787295581963574, 0.03402178430173924, 0.07109545931503501, 0.2896430104147589, 0.13817603556958932, 0.1364002657473843, -0.24742490380320806, 0.007814715211482151, 0.08329392731041256] |
707.275 | Multiple Equilibria in a Single-Column Model of the Tropical Atmosphere | A single-column model run under the weak temperature gradient approximation,
a parameterization of large-scale dynamics appropriate for the tropical
atmosphere, is shown to have multiple stable equilibria. Under conditions
permitting persistent deep convection, the model has a statistically steady
state in which such convection occurs, as well as an extremely dry state in
which convection does not occur. Which state is reached depends on the initial
moisture profile.
| physics.ao-ph | a singlecolumn model run under the weak temperature gradient approximation a parameterization of largescale dynamics appropriate for the tropical atmosphere is shown to have multiple stable equilibria under conditions permitting persistent deep convection the model has a statistically steady state in which such convection occurs as well as an extremely dry state in which convection does not occur which state is reached depends on the initial moisture profile | [['a', 'singlecolumn', 'model', 'run', 'under', 'the', 'weak', 'temperature', 'gradient', 'approximation', 'a', 'parameterization', 'of', 'largescale', 'dynamics', 'appropriate', 'for', 'the', 'tropical', 'atmosphere', 'is', 'shown', 'to', 'have', 'multiple', 'stable', 'equilibria', 'under', 'conditions', 'permitting', 'persistent', 'deep', 'convection', 'the', 'model', 'has', 'a', 'statistically', 'steady', 'state', 'in', 'which', 'such', 'convection', 'occurs', 'as', 'well', 'as', 'an', 'extremely', 'dry', 'state', 'in', 'which', 'convection', 'does', 'not', 'occur', 'which', 'state', 'is', 'reached', 'depends', 'on', 'the', 'initial', 'moisture', 'profile']] | [-0.14043025299735531, 0.16497433834186215, -0.1288138345322188, 0.08194733627811622, -0.020501296662533766, -0.12162943454185392, 0.03219464199055972, 0.3546499735949671, -0.28706011921167374, -0.2893866618465194, 0.16270705267293928, -0.1549054255378638, -0.09858073580407482, 0.18244664493592128, -0.04426590449806741, 0.06071152241030872, 0.10745089314877987, 0.0363702825133634, -0.021871627834009227, -0.20345038753208322, 0.28021152298349666, 0.09290841941829593, 0.30946342384113984, 0.025103173305979, 0.11497200966251138, -0.0994672541753115, 0.06535809194354121, 0.029594986261252093, -0.10119653826661627, -0.05092682385378901, 0.2373035467668053, 0.08551277390763383, 0.2559574866831741, -0.4876367498517913, -0.30602694599998786, 0.11965121260693516, 0.12162909637845587, 0.13009789081543738, -0.022261998926029158, -0.19348976388573647, 0.01868345049511203, -0.17359859069042347, -0.12775515109601923, -0.08415014625472181, 0.009505632175954388, -0.011826674015644719, -0.3348943075397983, 0.10131141036639318, 0.08267897208433543, 0.08776564764625885, -0.11791040440541967, -0.10022184777977493, -0.11887598022996612, 0.10018623901722844, 0.01808836531948627, 0.015036548227619599, 0.1705150037442389, -0.18719159311834066, 0.03145170517211013, 0.37016125343849554, -0.1351799430900856, -0.19037883890354457, 0.23995539326878154, -0.10201862609178267, -0.07601482941604712, 0.16428445113192805, 0.16062404648126924, 0.15083968346965881, -0.11208198679720655, 0.03827286284992143, -0.0952166954658049, 0.15834027198006345, 0.0475913373999955, -0.0790353286326589, 0.23628641517065904, 0.22499738882898407, 0.14569722608019434, 0.0960221181226456, -0.12773052245885244, -0.17396291569970987, -0.24010911859958844, -0.09465311311514062, -0.10715386631679447, 0.07456790476028212, -0.03912285305148758, -0.27646874431101265, 0.36678323774215055, 0.11611796756658484, 0.16799071663990617, -0.003803260194699225, 0.26945921277408214, 0.12926992494270534, 0.009464021220885436, 0.12934459755471087, 0.28188371388515565, 0.152775874334004, 0.15180688678040444, -0.22071281363434322, 0.18255812446723746, 0.04709841384593507] |
707.2751 | Final stare interaction enhancement effect on the near threshold p\bar p
system in B^\pm\to p\bar p \p^\pm decay | We discuss the low-mass enhancement effect in the baryon-antibaryon invariant
mass in three-body baryonic B decays using final state interactions in the
framework of Regge theory. We show that the rescattering between baryonic pair
can reproduce the observed mass spectrum.
| hep-ph | we discuss the lowmass enhancement effect in the baryonantibaryon invariant mass in threebody baryonic b decays using final state interactions in the framework of regge theory we show that the rescattering between baryonic pair can reproduce the observed mass spectrum | [['we', 'discuss', 'the', 'lowmass', 'enhancement', 'effect', 'in', 'the', 'baryonantibaryon', 'invariant', 'mass', 'in', 'threebody', 'baryonic', 'b', 'decays', 'using', 'final', 'state', 'interactions', 'in', 'the', 'framework', 'of', 'regge', 'theory', 'we', 'show', 'that', 'the', 'rescattering', 'between', 'baryonic', 'pair', 'can', 'reproduce', 'the', 'observed', 'mass', 'spectrum']] | [-0.1116251271800138, 0.22546476325951517, -0.1432026035457966, 0.19479427682235836, -0.02043341366224922, -0.05166062577627599, -0.004470666161796544, 0.30755452984012666, -0.19653358813375235, -0.30690799045842143, -0.15145191796764265, -0.3071068813791499, -0.07906426071367605, 0.07396014304831625, 0.055388764245435596, 0.05899163489229977, 0.11199572539189831, 0.04079294614493847, -0.07308515855693258, -0.15733864570502193, 0.3690928391297348, -0.028311509545892476, 0.1690935536636971, 0.14891192833893002, -0.023160161543637516, 0.02309106058673933, -0.039743851812090725, -0.06735097793862224, -0.16779770857629045, -0.027975106006488205, 0.16820034393458627, 0.10683462042361498, 0.10938355308026075, -0.3490111238206737, -0.13079207444097846, 0.16713047744706272, 0.22772077801637353, 0.13881305339164102, -0.084839461511001, -0.3051669885404408, 0.04995620003901422, -0.23392356532858685, -0.1333770958473906, -0.08380161663517356, 0.01567387211835012, -0.08968383767642081, -0.2886653219582513, 0.1969048575963825, -0.00950715157086961, -0.0621716306079179, -0.09024357674643398, -0.12833525181049482, -0.09826356582343579, 0.04122339938767254, 0.09365653055720032, 0.042182050878182054, 0.20976870160084218, -0.15766662505920975, -0.1282017643097788, 0.38601614683866503, -0.13741695976350457, -0.12382222046144306, 0.1313043440459296, -0.2437589495209977, -0.178056941810064, 0.10746671701781452, 0.24408770278096198, 0.02542122609447688, -0.1607582509284839, 0.11943697603419423, -0.03888853243552148, 0.16334590180777014, 0.0629431385314092, 0.09010334686026908, 0.25307751819491386, 0.18442646134644747, -0.09687580195022746, 0.07235569320619106, -0.10483723171055317, -0.10084407848771662, -0.3405881794169545, -0.08054276839829981, -0.09731401890749111, 0.01439748761476949, -0.026882868888787926, -0.07745248908177019, 0.34146223445422946, 0.07173069020500407, 0.31833473234437404, 0.027029516774928198, 0.32514898451045154, 0.10246993964537979, 0.06335774488543393, 0.0843695200048387, 0.3738021582365036, 0.19713836633600296, 0.07237043939530849, -0.42480083014816045, -0.009843390563037246, 0.07183784779626876] |
707.2752 | A Silver Anniversary Observation of the X-ray Emitting SN1978K in NGC
1313 | We describe the results of a 2003 Chandra ACIS-I observation of SN1978K. The
spectrum shows little flux below 0.6 keV, in contrast to the 2002 ACIS-S
observation that showed flux to 0.4 keV. Fitting the ACIS-I spectrum alone
leads to two solutions depending upon the value of the column density. A joint
fit using a dual thermal plasma model applied to the ACIS-I and a
contemporaneous XMM spectrum, which if fit alone also leads to a two-column
solution, yields a single column density fit. The fitted temperature of the
joint fit for the soft component remains constant with the errors from previous
Chandra, XMM, and ASCA data. The hard temperature recovers from its 2000-2002
decline and corresponds to an increase in the column density during that time.
The hard (2-10 keV) light curve is confirmed to be declining. The derived
number density represents a lower limit of 1e5 depending upon the adopted
filling factor of the emitting volume, leading to an estimated mass cooling
rate of 0.1-0.15 solar masses per year.
| astro-ph | we describe the results of a 2003 chandra acisi observation of sn1978k the spectrum shows little flux below 06 kev in contrast to the 2002 aciss observation that showed flux to 04 kev fitting the acisi spectrum alone leads to two solutions depending upon the value of the column density a joint fit using a dual thermal plasma model applied to the acisi and a contemporaneous xmm spectrum which if fit alone also leads to a twocolumn solution yields a single column density fit the fitted temperature of the joint fit for the soft component remains constant with the errors from previous chandra xmm and asca data the hard temperature recovers from its 20002002 decline and corresponds to an increase in the column density during that time the hard 210 kev light curve is confirmed to be declining the derived number density represents a lower limit of 1e5 depending upon the adopted filling factor of the emitting volume leading to an estimated mass cooling rate of 01015 solar masses per year | [['we', 'describe', 'the', 'results', 'of', 'a', '2003', 'chandra', 'acisi', 'observation', 'of', 'sn1978k', 'the', 'spectrum', 'shows', 'little', 'flux', 'below', '06', 'kev', 'in', 'contrast', 'to', 'the', '2002', 'aciss', 'observation', 'that', 'showed', 'flux', 'to', '04', 'kev', 'fitting', 'the', 'acisi', 'spectrum', 'alone', 'leads', 'to', 'two', 'solutions', 'depending', 'upon', 'the', 'value', 'of', 'the', 'column', 'density', 'a', 'joint', 'fit', 'using', 'a', 'dual', 'thermal', 'plasma', 'model', 'applied', 'to', 'the', 'acisi', 'and', 'a', 'contemporaneous', 'xmm', 'spectrum', 'which', 'if', 'fit', 'alone', 'also', 'leads', 'to', 'a', 'twocolumn', 'solution', 'yields', 'a', 'single', 'column', 'density', 'fit', 'the', 'fitted', 'temperature', 'of', 'the', 'joint', 'fit', 'for', 'the', 'soft', 'component', 'remains', 'constant', 'with', 'the', 'errors', 'from', 'previous', 'chandra', 'xmm', 'and', 'asca', 'data', 'the', 'hard', 'temperature', 'recovers', 'from', 'its', '20002002', 'decline', 'and', 'corresponds', 'to', 'an', 'increase', 'in', 'the', 'column', 'density', 'during', 'that', 'time', 'the', 'hard', '210', 'kev', 'light', 'curve', 'is', 'confirmed', 'to', 'be', 'declining', 'the', 'derived', 'number', 'density', 'represents', 'a', 'lower', 'limit', 'of', '1e5', 'depending', 'upon', 'the', 'adopted', 'filling', 'factor', 'of', 'the', 'emitting', 'volume', 'leading', 'to', 'an', 'estimated', 'mass', 'cooling', 'rate', 'of', '01015', 'solar', 'masses', 'per', 'year']] | [-0.03609100603909396, 0.10729790540319621, -0.09229389795458273, 0.05060936127967366, -0.05854097903322648, -0.0945232246975031, 0.1112050403306699, 0.3939349563134944, -0.19042134615216022, -0.39131579597425814, 0.07938010832020903, -0.31910372748970983, 0.016943721664959895, 0.19036951846963562, -0.06051415317034459, -0.01200668855522321, 0.039865727337789446, -0.020080679838600405, -0.09262705629636699, -0.24870588158202522, 0.20700738484122078, 0.1255761811783647, 0.24880389880854636, 0.02348763198208283, 0.08472121117485906, -0.017297150109730222, -0.05944411122404477, -0.01942540106966215, -0.12562419163706876, 0.056528422406271976, 0.18466743866995197, 0.09385634715264828, 0.17469035493593443, -0.34837428241529883, -0.2236300579354386, 0.05798427058274255, 0.12211775000152343, -0.027301197197726543, 0.033296057244297114, -0.20527979455997838, 0.006481815770487575, -0.20918338146635934, -0.18422640413045882, 0.027937359609367215, 0.01103224989355487, -0.02470379618325216, -0.2592907764401068, 0.18051614313752745, -0.0383835264317253, -0.0007541679174584501, -0.1724433930542813, -0.11903644405469736, -0.025203814280821996, 0.05520992591319715, 0.06270083025549812, 0.10208330581731656, 0.1601600602926577, -0.11982734254287446, -0.0378693752702983, 0.32795014419209434, -0.1065375080003458, 0.025166338806807558, 0.14141344775254017, -0.15863954914076364, -0.16498064885381608, 0.272206260951455, 0.10902347236269098, 0.04753105511635487, -0.12168597429442932, 0.057237449112718046, -0.06229003888198777, 0.3397262991940164, 0.05931447041357922, -0.019349895134184728, 0.24898407884928234, 0.10531042804393698, 0.0518010065480827, 0.12426179894280401, -0.24732252751915332, -0.03457506546504138, -0.247498451775926, -0.061650596541927796, -0.15887877169229528, 0.10469632426358978, -0.11281807510813986, -0.14208010274040347, 0.39675688840558426, 0.09910413038177306, 0.26925388833316155, 0.06288884746746215, 0.30562237670152065, 0.1665177438627271, 0.03287695514668217, 0.10706642250811188, 0.2997449464055107, 0.17651442291954642, 0.1336936749798684, -0.21750552494537687, 0.03518987427027348, 0.009437862003002973] |
707.2753 | Extreme statistics for time series: Distribution of the maximum relative
to the initial value | The extreme statistics of time signals is studied when the maximum is
measured from the initial value. In the case of independent, identically
distributed (iid) variables, we classify the limiting distribution of the
maximum according to the properties of the parent distribution from which the
variables are drawn. Then we turn to correlated periodic Gaussian signals with
a 1/f^alpha power spectrum and study the distribution of the maximum relative
height with respect to the initial height (MRH_I). The exact MRH_I distribution
is derived for alpha=0 (iid variables), alpha=2 (random walk), alpha=4 (random
acceleration), and alpha=infinity (single sinusoidal mode). For other,
intermediate values of alpha, the distribution is determined from simulations.
We find that the MRH_I distribution is markedly different from the previously
studied distribution of the maximum height relative to the average height for
all alpha. The two main distinguishing features of the MRH_I distribution are
the much larger weight for small relative heights and the divergence at zero
height for alpha>3. We also demonstrate that the boundary conditions affect the
shape of the distribution by presenting exact results for some non-periodic
boundary conditions. Finally, we show that, for signals arising from
time-translationally invariant distributions, the density of near extreme
states is the same as the MRH_I distribution. This is used in developing a
scaling theory for the threshold singularities of the two distributions.
| cond-mat.stat-mech | the extreme statistics of time signals is studied when the maximum is measured from the initial value in the case of independent identically distributed iid variables we classify the limiting distribution of the maximum according to the properties of the parent distribution from which the variables are drawn then we turn to correlated periodic gaussian signals with a 1falpha power spectrum and study the distribution of the maximum relative height with respect to the initial height mrh_i the exact mrh_i distribution is derived for alpha0 iid variables alpha2 random walk alpha4 random acceleration and alphainfinity single sinusoidal mode for other intermediate values of alpha the distribution is determined from simulations we find that the mrh_i distribution is markedly different from the previously studied distribution of the maximum height relative to the average height for all alpha the two main distinguishing features of the mrh_i distribution are the much larger weight for small relative heights and the divergence at zero height for alpha3 we also demonstrate that the boundary conditions affect the shape of the distribution by presenting exact results for some nonperiodic boundary conditions finally we show that for signals arising from timetranslationally invariant distributions the density of near extreme states is the same as the mrh_i distribution this is used in developing a scaling theory for the threshold singularities of the two distributions | [['the', 'extreme', 'statistics', 'of', 'time', 'signals', 'is', 'studied', 'when', 'the', 'maximum', 'is', 'measured', 'from', 'the', 'initial', 'value', 'in', 'the', 'case', 'of', 'independent', 'identically', 'distributed', 'iid', 'variables', 'we', 'classify', 'the', 'limiting', 'distribution', 'of', 'the', 'maximum', 'according', 'to', 'the', 'properties', 'of', 'the', 'parent', 'distribution', 'from', 'which', 'the', 'variables', 'are', 'drawn', 'then', 'we', 'turn', 'to', 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'the', 'divergence', 'at', 'zero', 'height', 'for', 'alpha3', 'we', 'also', 'demonstrate', 'that', 'the', 'boundary', 'conditions', 'affect', 'the', 'shape', 'of', 'the', 'distribution', 'by', 'presenting', 'exact', 'results', 'for', 'some', 'nonperiodic', 'boundary', 'conditions', 'finally', 'we', 'show', 'that', 'for', 'signals', 'arising', 'from', 'timetranslationally', 'invariant', 'distributions', 'the', 'density', 'of', 'near', 'extreme', 'states', 'is', 'the', 'same', 'as', 'the', 'mrh_i', 'distribution', 'this', 'is', 'used', 'in', 'developing', 'a', 'scaling', 'theory', 'for', 'the', 'threshold', 'singularities', 'of', 'the', 'two', 'distributions']] | [-0.10926818928885955, 0.17105463716188954, -0.10809648494474222, 0.07693556594587195, 0.003580719730587083, -0.10871341952118571, 0.024499049292764554, 0.3595795179946941, -0.28570590265963913, -0.27822174939912675, 0.08471014268065681, -0.28962476701149925, -0.08644848720028563, 0.17738518093382696, -0.029319241998984474, 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707.2754 | On the internal space dependence of the static quark-antiquark potential
in ${\cal N}=4$ SYM plasma wind | We study the effect of the relative S^5-angle of a quark and an antiquark on
their static potential and the related screening length in a strongly coupled
moving ${\cal N}=4$ SYM plasma. The large velocity scaling law for the
screening length holds for any relative S^5-angle $\theta$. However, the
velocity independent prefactor Z strongly depends on $\theta$. For comparison
with QCD we propose to average Z over all relative orientations on S^5. This
generates a suppression factor relative to the case $\theta =0$.
| hep-th | we study the effect of the relative s5angle of a quark and an antiquark on their static potential and the related screening length in a strongly coupled moving cal n4 sym plasma the large velocity scaling law for the screening length holds for any relative s5angle theta however the velocity independent prefactor z strongly depends on theta for comparison with qcd we propose to average z over all relative orientations on s5 this generates a suppression factor relative to the case theta 0 | [['we', 'study', 'the', 'effect', 'of', 'the', 'relative', 's5angle', 'of', 'a', 'quark', 'and', 'an', 'antiquark', 'on', 'their', 'static', 'potential', 'and', 'the', 'related', 'screening', 'length', 'in', 'a', 'strongly', 'coupled', 'moving', 'cal', 'n4', 'sym', 'plasma', 'the', 'large', 'velocity', 'scaling', 'law', 'for', 'the', 'screening', 'length', 'holds', 'for', 'any', 'relative', 's5angle', 'theta', 'however', 'the', 'velocity', 'independent', 'prefactor', 'z', 'strongly', 'depends', 'on', 'theta', 'for', 'comparison', 'with', 'qcd', 'we', 'propose', 'to', 'average', 'z', 'over', 'all', 'relative', 'orientations', 'on', 's5', 'this', 'generates', 'a', 'suppression', 'factor', 'relative', 'to', 'the', 'case', 'theta', '0']] | [-0.15596749464532844, 0.20498839261769863, -0.050348960938231074, 0.01646873111014519, -0.028942026123174546, -0.11778112514703362, 0.030772415059834236, 0.3653405737821703, -0.21061021480479358, -0.21943928738251145, 0.004086777575049595, -0.2848964583726577, -0.046377130410415524, 0.16459722214458902, 0.003229490986502051, 0.023923325720300644, -0.023528633892168232, 0.07086092383991698, -0.10841194641442946, -0.23848053626716137, 0.3080775925406703, 0.00761110500007132, 0.27654154207787396, 0.1082465792833655, 0.09400874976482657, 0.07472905884338772, -0.0341594841239261, 0.05254254360211852, -0.151778487664508, 0.07965948252527641, 0.11791865837567682, 0.008055671751208138, 0.1827022342045826, -0.3089020293159985, -0.1323591421019102, 0.08901069394922183, 0.14921240589041032, 0.07280347715879296, 0.01888948032937162, -0.22358962705209393, 0.08201890456185526, -0.16617522878503357, -0.1643530144672381, -0.021899194335909904, 0.10298468837698485, 0.01104146697598705, -0.30971524740258854, 0.13338634050753037, 0.014593136820577108, 0.04759743180769829, -0.01020979556473501, -0.12742596713504123, -0.008236856878171732, 0.08404817610956085, 0.11157530967008185, 0.14250247344018224, 0.16633375388006738, -0.2105631170662143, -0.06811713370391065, 0.39218316930863595, -0.07993380266621157, -0.21209483545411517, 0.17541031074928648, -0.19614345760280152, -0.11102000619342298, 0.09745009191460724, 0.1807323216725095, 0.17451646355065922, -0.055873457319390626, 0.14800747259042835, -0.030635575855863684, 0.22788378448558994, 0.10859948198920415, 0.031547083594134925, 0.2065002992519258, 0.11323871626806112, 0.05234277654830136, 0.12591021892005277, -0.09520271730057343, -0.06891093607043365, -0.3804492620912231, -0.12970036261335569, -0.10880533599059017, 0.1054299445822835, -0.19948621508686942, -0.18691358195594798, 0.37598326546427463, 0.12679747681788825, 0.22911260191949062, 0.08213339075676085, 0.22230806261485006, 0.14135001264555655, 0.056663501360971064, 0.08363605418277008, 0.21399163125933687, 0.16643967514248265, 0.06437355547677726, -0.31616147776007836, 0.02286447524840449, 0.09463549697668189] |
707.2755 | Ricci Nilsoliton Black Holes | We follow a constructive approach and find higher-dimensional black holes
with Ricci nilsoliton horizons. The spacetimes are solutions to Einstein's
equation with a negative cosmological constant and generalises therefore,
anti-de Sitter black hole spacetimes. The approach combines a work by Lauret --
which relate so-called Ricci nilsolitons and Einstein solvmanifolds -- and an
earlier work by the author. The resulting black hole spacetimes are
asymptotically Einstein solvmanifolds and thus, are examples of solutions which
are not asymptotically Anti-de Sitter. We show that any nilpotent group in
dimension $n\leq 6$ has a corresponding Ricci nilsoliton black hole solution in
dimension (n+2). Furthermore, we show that in dimensions (n+2)>8, there exists
an infinite number of locally distinct Ricci nilsoliton black hole metrics.
| hep-th gr-qc math-ph math.MP | we follow a constructive approach and find higherdimensional black holes with ricci nilsoliton horizons the spacetimes are solutions to einsteins equation with a negative cosmological constant and generalises therefore antide sitter black hole spacetimes the approach combines a work by lauret which relate socalled ricci nilsolitons and einstein solvmanifolds and an earlier work by the author the resulting black hole spacetimes are asymptotically einstein solvmanifolds and thus are examples of solutions which are not asymptotically antide sitter we show that any nilpotent group in dimension nleq 6 has a corresponding ricci nilsoliton black hole solution in dimension n2 furthermore we show that in dimensions n28 there exists an infinite number of locally distinct ricci nilsoliton black hole metrics | [['we', 'follow', 'a', 'constructive', 'approach', 'and', 'find', 'higherdimensional', 'black', 'holes', 'with', 'ricci', 'nilsoliton', 'horizons', 'the', 'spacetimes', 'are', 'solutions', 'to', 'einsteins', 'equation', 'with', 'a', 'negative', 'cosmological', 'constant', 'and', 'generalises', 'therefore', 'antide', 'sitter', 'black', 'hole', 'spacetimes', 'the', 'approach', 'combines', 'a', 'work', 'by', 'lauret', 'which', 'relate', 'socalled', 'ricci', 'nilsolitons', 'and', 'einstein', 'solvmanifolds', 'and', 'an', 'earlier', 'work', 'by', 'the', 'author', 'the', 'resulting', 'black', 'hole', 'spacetimes', 'are', 'asymptotically', 'einstein', 'solvmanifolds', 'and', 'thus', 'are', 'examples', 'of', 'solutions', 'which', 'are', 'not', 'asymptotically', 'antide', 'sitter', 'we', 'show', 'that', 'any', 'nilpotent', 'group', 'in', 'dimension', 'nleq', '6', 'has', 'a', 'corresponding', 'ricci', 'nilsoliton', 'black', 'hole', 'solution', 'in', 'dimension', 'n2', 'furthermore', 'we', 'show', 'that', 'in', 'dimensions', 'n28', 'there', 'exists', 'an', 'infinite', 'number', 'of', 'locally', 'distinct', 'ricci', 'nilsoliton', 'black', 'hole', 'metrics']] | [-0.1932251587257547, 0.0978801116414893, -0.07914316804164041, 0.1303467535516405, -0.14004948252606822, -0.2463563390754921, -0.11436238122504142, 0.32650244248620536, -0.07035732724688064, -0.23987529859325643, 0.1149353588491252, -0.35050091262654226, -0.15016881464901616, 0.15134472373608596, -0.10992919189571324, 0.015440537467977758, 0.0017841099011632851, 0.07250188195572818, -0.1096268071530592, -0.32487931283253985, 0.48024347459234423, 0.03435171154027773, 0.23119623216768823, -0.0033055373163641258, 0.146127273673902, -0.08731427023155709, 0.037152666837308494, 0.10442689071030561, -0.25021216588603407, 0.04252863648718507, 0.260145115253705, 0.13842289858118836, 0.18669290087625812, -0.3570594288827062, -0.25092052608349563, 0.11399354939191145, 0.19779823292283563, 0.19208303908225527, -0.11313228676158746, -0.30235637973804597, 0.09993822051812026, -0.2099698314589243, -0.19031215408793256, -0.07669542489131376, 0.055276696846457356, -0.09272934697465814, -0.15235833308691063, 0.11769884422232034, 0.11950680645088017, -0.0790167580106122, -0.17947814195274803, -0.025390579153697787, -0.07008757273729702, 0.02791384757709516, 0.14838759285413614, 0.017130565190277364, 0.10141609376296401, -0.01455308637193057, -0.17137238795285004, 0.2848302056712998, -0.07127448141582753, -0.2623526764465338, 0.13076845363129752, -0.20501928096952832, -0.09808271895636315, 0.09044264913615534, 0.09321939864223507, 0.28839566766173913, -0.09010869061763761, 0.25964876605835113, -0.02840773395057452, 0.13821410080733693, 0.20760696583380134, 0.015234812689645185, 0.2863244588281644, 0.01618326332033375, 0.10716382872660533, 0.10121290437814037, 0.10683221322626381, -0.07160672345997814, -0.35007394648204415, -0.20391256642385813, -0.12067769495257319, 0.19620763474369474, -0.2532702223431088, -0.21009620964148287, 0.2647570116540133, 0.016681265875192013, 0.14233156706017078, 0.12041817986114361, 0.17165497820336648, -0.004942674339764704, -0.0012503308747200516, 0.21977653492723545, 0.3070167895540658, 0.1425441822009477, 0.11324726458702047, -0.1638780172472283, -0.1758130590541888, 0.21606224023152965] |
707.2756 | First results on double beta decay modes of Cd, Te and Zn isotopes with
the COBRA experiment | Four 1cm^3 CdZnTe semiconductor detectors were operated in the Gran Sasso
National Laboratory to explore the feasibility of such devices for double beta
decay searches as proposed for the COBRA experiment. The research involved
background studies accompanied by measurements of energy resolution performed
at the surface. Energy resolutions sufficient to reduce the contribution of
two-neutrino double beta decay events to a negligible level for a large scale
experiment have already been achieved and further improvements are expected.
Using activity measurements of contaminants in all construction materials a
background model was developed with the help of Monte Carlo simulations and
major background sources were identified. A total exposure of 4.34 kg.days of
underground data has been accumulated allowing a search for neutrinoless double
beta decay modes of seven isotopes found in CdZnTe. Half-life limits (90% C.L.)
are presented for decays to ground and excited states. Four improved lower
limits have been obtained, including zero neutrino double electron capture
transitions of Zn64 and Te120 to the ground state, which are 1.19*10^{17} years
and 2.68*10^{15} years respectively.
| nucl-ex hep-ph nucl-th | four 1cm3 cdznte semiconductor detectors were operated in the gran sasso national laboratory to explore the feasibility of such devices for double beta decay searches as proposed for the cobra experiment the research involved background studies accompanied by measurements of energy resolution performed at the surface energy resolutions sufficient to reduce the contribution of twoneutrino double beta decay events to a negligible level for a large scale experiment have already been achieved and further improvements are expected using activity measurements of contaminants in all construction materials a background model was developed with the help of monte carlo simulations and major background sources were identified a total exposure of 434 kgdays of underground data has been accumulated allowing a search for neutrinoless double beta decay modes of seven isotopes found in cdznte halflife limits 90 cl are presented for decays to ground and excited states four improved lower limits have been obtained including zero neutrino double electron capture transitions of zn64 and te120 to the ground state which are 1191017 years and 2681015 years respectively | [['four', '1cm3', 'cdznte', 'semiconductor', 'detectors', 'were', 'operated', 'in', 'the', 'gran', 'sasso', 'national', 'laboratory', 'to', 'explore', 'the', 'feasibility', 'of', 'such', 'devices', 'for', 'double', 'beta', 'decay', 'searches', 'as', 'proposed', 'for', 'the', 'cobra', 'experiment', 'the', 'research', 'involved', 'background', 'studies', 'accompanied', 'by', 'measurements', 'of', 'energy', 'resolution', 'performed', 'at', 'the', 'surface', 'energy', 'resolutions', 'sufficient', 'to', 'reduce', 'the', 'contribution', 'of', 'twoneutrino', 'double', 'beta', 'decay', 'events', 'to', 'a', 'negligible', 'level', 'for', 'a', 'large', 'scale', 'experiment', 'have', 'already', 'been', 'achieved', 'and', 'further', 'improvements', 'are', 'expected', 'using', 'activity', 'measurements', 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0.04877128559438621, -0.004196364661466385] |
707.2757 | Singular Oscillatory Integrals on R^n | Let Pd,n denote the space of all real polynomials of degree at most d on R^n.
We prove a new estimate for the logarithmic measure of the sublevel set of a
polynomial P in Pd,1. Using this estimate, we prove a sharp estimate for a
singular oscillatory integral on R^n.
| math.CA | let pdn denote the space of all real polynomials of degree at most d on rn we prove a new estimate for the logarithmic measure of the sublevel set of a polynomial p in pd1 using this estimate we prove a sharp estimate for a singular oscillatory integral on rn | [['let', 'pdn', 'denote', 'the', 'space', 'of', 'all', 'real', 'polynomials', 'of', 'degree', 'at', 'most', 'd', 'on', 'rn', 'we', 'prove', 'a', 'new', 'estimate', 'for', 'the', 'logarithmic', 'measure', 'of', 'the', 'sublevel', 'set', 'of', 'a', 'polynomial', 'p', 'in', 'pd1', 'using', 'this', 'estimate', 'we', 'prove', 'a', 'sharp', 'estimate', 'for', 'a', 'singular', 'oscillatory', 'integral', 'on', 'rn']] | [-0.17580134431365876, 0.036460449025034904, -0.07366481182165444, 0.031839968708809466, -0.04174702860414982, -0.10898144003003836, 0.01991986666165758, 0.2435675104893744, -0.3009449779544957, -0.16282719268463552, 0.09239585971226916, -0.30183479396626356, -0.12157232734258287, 0.23397331153973938, -0.07235797109664417, 0.03373160100774839, 0.011662876512855292, 0.13960150130093096, -0.0915843826904893, -0.24840346667915583, 0.36087055258452894, -0.13428476341068746, 0.13016052413731813, 0.050613109692931174, 0.14399661688134074, -0.0004758626618422568, -0.020708382707089187, -0.022205556976259685, -0.2428725295420736, 0.1761236411705613, 0.22542372955475, 0.11174831957556307, 0.3238465601950884, -0.3461371824890375, -0.1509910873323679, 0.25938893819227815, 0.16110957589000463, -0.041086064828559754, 0.036534913410432635, -0.26858543798327444, 0.16904896173626185, -0.06960060667974176, -0.21199646423570812, -0.08602989986538886, 0.09830872872844339, 0.05518485374748707, -0.3952952252700925, 0.01650894564576447, 0.0388644814863801, 0.11868913468904793, -0.09783918822184205, -0.14182687354739756, 0.006321763037703931, 0.01861975739710033, -0.08006167106330395, 0.1310550395050086, 0.021186323184520007, -0.04632423581089824, -0.08375179693102837, 0.3027880473295227, -0.12870717832818626, -0.22791919231414795, 0.08524459578096867, -0.2642858951445669, -0.14573423959314824, 0.08892078638076782, 0.2295260057039559, 0.1923970767762512, -0.05267630700021982, 0.18686542271636428, -0.11589767131954432, 0.1023813070729375, 0.12757602132856846, 0.011932584419846536, 0.07742883395403624, 0.07669108171015977, 0.16585618238896133, 0.17909087299369275, -0.08156865222379565, 0.022696284828707575, -0.38412601247429845, -0.19138196390122175, -0.26562596176052466, 0.1354252582229674, -0.20380244793370367, -0.19236331611871718, 0.36738503630273045, 0.05896038742735982, 0.2550993873924017, 0.16410362168215215, 0.2050529399421066, 0.12775967092980864, -0.013631275219377131, 0.09336089188233018, 0.09966532528400421, 0.12143153972923755, -0.011214942391961812, -0.1938559016957879, 0.07784204576164484, 0.1638011309877038] |
707.2758 | Measurement of the Semileptonic Decays B --> D tau nubar and B --> D*
tau nubar | We present preliminary measurements of branching fractions for the
semileptonic decays B --> D tau nubar and B --> D* tau nubar, which are
potentially sensitive to non--Standard Model amplitudes. The data sample
comprises 232x10^6 Upsilon(4S) --> BBbar decays collected with the BaBar
detector at the PEP-II e+e- storage ring. We obtain B(B- --> D0 tau nubar) =
(0.63 +/- 0.38 +/- 0.10 +/- 0.06)%, B(B- --> D*0 tau nubar) = (2.35 +/- 0.49
+/- 0.22 +/- 0.18)%, B(B0bar --> D+ tau nubar) = (1.03 +/- 0.35 +/- 0.14 +/-
0.10)%, and B(B0bar --> D*+ tau nubar) = (1.15 +/- 0.33 +/- 0.04 +/- 0.04)%,
where the uncertainties are statistical, systematic, and normalization,
respectively. By combining B- and B0bar results, we also obtain the branching
fractions B(B --> D tau nubar) = (0.90 +/- 0.26 +/- 0.11 +/- 0.06)% and B(B -->
D* tau nubar) = (1.81 +/- 0.33 +/- 0.11 +/- 0.06)% (quoted for the B-
lifetime), with significances of 3.5 sigma and 6.2 sigma.
| hep-ex | we present preliminary measurements of branching fractions for the semileptonic decays b d tau nubar and b d tau nubar which are potentially sensitive to nonstandard model amplitudes the data sample comprises 232x106 upsilon4s bbbar decays collected with the babar detector at the pepii ee storage ring we obtain bb d0 tau nubar 063 038 010 006 bb d0 tau nubar 235 049 022 018 bb0bar d tau nubar 103 035 014 010 and bb0bar d tau nubar 115 033 004 004 where the uncertainties are statistical systematic and normalization respectively by combining b and b0bar results we also obtain the branching fractions bb d tau nubar 090 026 011 006 and bb d tau nubar 181 033 011 006 quoted for the b lifetime with significances of 35 sigma and 62 sigma | [['we', 'present', 'preliminary', 'measurements', 'of', 'branching', 'fractions', 'for', 'the', 'semileptonic', 'decays', 'b', 'd', 'tau', 'nubar', 'and', 'b', 'd', 'tau', 'nubar', 'which', 'are', 'potentially', 'sensitive', 'to', 'nonstandard', 'model', 'amplitudes', 'the', 'data', 'sample', 'comprises', '232x106', 'upsilon4s', 'bbbar', 'decays', 'collected', 'with', 'the', 'babar', 'detector', 'at', 'the', 'pepii', 'ee', 'storage', 'ring', 'we', 'obtain', 'bb', 'd0', 'tau', 'nubar', '063', '038', '010', '006', 'bb', 'd0', 'tau', 'nubar', '235', '049', '022', '018', 'bb0bar', 'd', 'tau', 'nubar', '103', '035', '014', '010', 'and', 'bb0bar', 'd', 'tau', 'nubar', '115', '033', '004', '004', 'where', 'the', 'uncertainties', 'are', 'statistical', 'systematic', 'and', 'normalization', 'respectively', 'by', 'combining', 'b', 'and', 'b0bar', 'results', 'we', 'also', 'obtain', 'the', 'branching', 'fractions', 'bb', 'd', 'tau', 'nubar', '090', '026', '011', '006', 'and', 'bb', 'd', 'tau', 'nubar', '181', '033', '011', '006', 'quoted', 'for', 'the', 'b', 'lifetime', 'with', 'significances', 'of', '35', 'sigma', 'and', '62', 'sigma']] | [-0.1041057739429582, 0.26469247974805477, 0.012447284342006858, 0.03691476602212323, 0.021768564894039156, -0.23377506307473309, 0.199994597820341, 0.250518934556136, -0.18543471262223066, -0.3138425387162015, -0.040879246666747374, -0.5274197127726069, 0.2027500359467546, 0.13711643289718636, 0.057495770940935255, 0.10545011161549955, 0.12591469066880145, -0.05845328103890993, -0.09732931565241258, -0.17226008945179724, -0.029909949562393297, -0.032876780739796344, 0.1729983844692798, 0.04356158525451906, -0.11003601834566605, -0.010242769554173364, -0.14202353812376023, -0.16558859388070896, -0.32941057870192525, -0.03633552378558211, 0.1705124859551066, 0.07947750196309018, 0.03796571733331994, -0.1613655488067057, 0.17263646258559442, 0.20527863421515016, 0.156321159437915, -0.17173514111734284, 0.08754782868755799, -0.4188518557991636, 0.2613875147504942, -0.1937772243990934, 0.034772751651550256, 0.04073402082505531, 0.24665934401319214, -0.21524569763858012, -0.4615736114337368, 0.2357987803352307, -0.11170798225006215, 0.14369992057519748, -0.024197315221260254, -0.4516800696702492, -0.027705349544539376, -0.12101692851296716, 0.027697397341043165, 0.27656405229345526, 0.2211796343466617, 0.06439701273435153, -0.11066148256974057, 0.39710523151876614, -0.1299411103626559, -0.09536035456939747, 0.1100349356630411, -0.30542999848065183, -0.15194221868886984, 0.25120191125521313, 0.24616335528198965, 0.03178514842393885, -0.2289814363562859, 0.14393149978827854, 0.04935190804946916, 0.2515469501005079, 0.056763625941834504, 0.1049443938278355, 0.20099752273102453, 0.18137624191690965, -0.09959742800429765, -0.04959292669738538, -0.2842114671567609, 0.12444768566638231, -0.35905330272958635, -0.0976466027929192, 0.04065287894660369, 0.22058706351772958, -0.18054985604358353, 0.046299052394968565, 0.29042778375271455, -0.032535219328702056, 0.4137283299342358, 0.09667386389880168, 0.20137093054687366, 0.04198037676033529, -0.056185082513208785, 0.059096042460698946, 0.2925030636930264, 0.2759665268161719, 0.13064873687086165, -0.26535269617684243, 0.014746275711748828, -0.0587556256835622] |
707.2759 | Encapsulation, compensation, and substitution of catalyst particles
during continuous growth of carbon nanotubes | By sequential feeding of catalyst materials, it is revealed that the active
growth sites are at the bottom of the carbon nanotubes (CNTs), and that
catalyst particles are constantly encapsulated into nanotubes from the bottom.
This gives a better insight into the mechanism of CNT formation and on ways to
control the growth process. CNTs encapsulated with different materials should
enable the study of their electronic or magnetic properties, with potential
applications as building blocks for nanoelectronics and as fillers in
composites for electromagenetic shielding.
| cond-mat.mtrl-sci cond-mat.other | by sequential feeding of catalyst materials it is revealed that the active growth sites are at the bottom of the carbon nanotubes cnts and that catalyst particles are constantly encapsulated into nanotubes from the bottom this gives a better insight into the mechanism of cnt formation and on ways to control the growth process cnts encapsulated with different materials should enable the study of their electronic or magnetic properties with potential applications as building blocks for nanoelectronics and as fillers in composites for electromagenetic shielding | [['by', 'sequential', 'feeding', 'of', 'catalyst', 'materials', 'it', 'is', 'revealed', 'that', 'the', 'active', 'growth', 'sites', 'are', 'at', 'the', 'bottom', 'of', 'the', 'carbon', 'nanotubes', 'cnts', 'and', 'that', 'catalyst', 'particles', 'are', 'constantly', 'encapsulated', 'into', 'nanotubes', 'from', 'the', 'bottom', 'this', 'gives', 'a', 'better', 'insight', 'into', 'the', 'mechanism', 'of', 'cnt', 'formation', 'and', 'on', 'ways', 'to', 'control', 'the', 'growth', 'process', 'cnts', 'encapsulated', 'with', 'different', 'materials', 'should', 'enable', 'the', 'study', 'of', 'their', 'electronic', 'or', 'magnetic', 'properties', 'with', 'potential', 'applications', 'as', 'building', 'blocks', 'for', 'nanoelectronics', 'and', 'as', 'fillers', 'in', 'composites', 'for', 'electromagenetic', 'shielding']] | [-0.062225340776855036, 0.18126097200660124, -0.020077201210716294, -0.04821094599682987, 0.007003607062090721, -0.14841233501543424, 0.07339000979083635, 0.44288598864694084, -0.2683607860401805, -0.31749131477304865, 0.07689899617911405, -0.28968079215320314, -0.1298548646764608, 0.1849110932283414, 0.026846294197076487, 0.00798333462859903, 0.03267078983619632, -0.08156676579355485, 0.02243424261853631, -0.21135617006525753, 0.24400590928936644, 0.08642291040381506, 0.3377724050522028, 0.12447075498112965, 0.03173590276301617, -0.01951665464037519, 0.07282215350174479, 0.01611257065087557, -0.13015344930162037, 0.1639393577364293, 0.2278927569942815, -0.029248555928158265, 0.24730260630271264, -0.5655673437840527, -0.2295587768922338, -0.00984365087268608, 0.1552661806705319, 0.11114710745667773, -0.11958084370902118, -0.23415602160440313, 0.1120680531242951, -0.11463461985944637, -0.11119483864223141, -0.043016532790802774, 0.007204444158733601, 0.0368028526953865, -0.21606116462498903, 0.002362617945653342, 0.055396730989395154, -0.011040784185752273, -0.11861379603145733, -0.1724333980652903, -0.0939676184262637, 0.15084396978740447, 0.07498081177428026, -0.05431754978503921, 0.3137289980382082, -0.14589881113386668, -0.08228350787179634, 0.44206085863212746, -0.005032045930247044, -0.12632274394300544, 0.22587170886496702, -0.10908300174023247, -0.06664090191701516, 0.130622971841755, 0.17887363580632068, 0.08285562547444854, -0.19310976475078082, 0.011867347060442193, 0.026365041954531557, 0.10546472615429334, 0.07095175573513621, 0.08977215141723198, 0.3182878886526894, 0.28349520962330554, 0.0442040237332029, 0.16620243852403724, -0.019975529504119464, -0.016019237227737904, -0.18162439415408743, -0.29114888112859, -0.15315660386390628, 0.08406919258413836, -0.08358599107183788, -0.20959408781380348, 0.3899801350198686, 0.045028583922733866, 0.16179793564203596, -0.014919865344251906, 0.23579227144364268, 0.006324645539280027, 0.1700265096539321, -0.03745097183023712, 0.23674923942113915, 0.1749653868305142, 0.11511513598019346, -0.18660686612184646, 0.12095697721399899, 0.007154274787310334] |
707.276 | Spanning Trees with Many Leaves in Graphs without Diamonds and Blossoms | It is known that graphs on n vertices with minimum degree at least 3 have
spanning trees with at least n/4+2 leaves and that this can be improved to
(n+4)/3 for cubic graphs without the diamond K_4-e as a subgraph. We generalize
the second result by proving that every graph with minimum degree at least 3,
without diamonds and certain subgraphs called blossoms, has a spanning tree
with at least (n+4)/3 leaves, and generalize this further by allowing vertices
of lower degree. We show that it is necessary to exclude blossoms in order to
obtain a bound of the form n/3+c.
We use the new bound to obtain a simple FPT algorithm, which decides in
O(m)+O^*(6.75^k) time whether a graph of size m has a spanning tree with at
least k leaves. This improves the best known time complexity for MAX LEAF
SPANNING TREE.
| math.CO | it is known that graphs on n vertices with minimum degree at least 3 have spanning trees with at least n42 leaves and that this can be improved to n43 for cubic graphs without the diamond k_4e as a subgraph we generalize the second result by proving that every graph with minimum degree at least 3 without diamonds and certain subgraphs called blossoms has a spanning tree with at least n43 leaves and generalize this further by allowing vertices of lower degree we show that it is necessary to exclude blossoms in order to obtain a bound of the form n3c we use the new bound to obtain a simple fpt algorithm which decides in omo675k time whether a graph of size m has a spanning tree with at least k leaves this improves the best known time complexity for max leaf spanning tree | [['it', 'is', 'known', 'that', 'graphs', 'on', 'n', 'vertices', 'with', 'minimum', 'degree', 'at', 'least', '3', 'have', 'spanning', 'trees', 'with', 'at', 'least', 'n42', 'leaves', 'and', 'that', 'this', 'can', 'be', 'improved', 'to', 'n43', 'for', 'cubic', 'graphs', 'without', 'the', 'diamond', 'k_4e', 'as', 'a', 'subgraph', 'we', 'generalize', 'the', 'second', 'result', 'by', 'proving', 'that', 'every', 'graph', 'with', 'minimum', 'degree', 'at', 'least', '3', 'without', 'diamonds', 'and', 'certain', 'subgraphs', 'called', 'blossoms', 'has', 'a', 'spanning', 'tree', 'with', 'at', 'least', 'n43', 'leaves', 'and', 'generalize', 'this', 'further', 'by', 'allowing', 'vertices', 'of', 'lower', 'degree', 'we', 'show', 'that', 'it', 'is', 'necessary', 'to', 'exclude', 'blossoms', 'in', 'order', 'to', 'obtain', 'a', 'bound', 'of', 'the', 'form', 'n3c', 'we', 'use', 'the', 'new', 'bound', 'to', 'obtain', 'a', 'simple', 'fpt', 'algorithm', 'which', 'decides', 'in', 'omo675k', 'time', 'whether', 'a', 'graph', 'of', 'size', 'm', 'has', 'a', 'spanning', 'tree', 'with', 'at', 'least', 'k', 'leaves', 'this', 'improves', 'the', 'best', 'known', 'time', 'complexity', 'for', 'max', 'leaf', 'spanning', 'tree']] | [-0.12077009102811555, 0.14555743447719857, -0.04825609087149476, 0.018353546079788747, -0.10275901592877153, -0.15474162415529674, 0.10999018669460568, 0.37656363734480486, -0.24279379498187478, -0.3783789028843435, 0.11461773813194172, -0.29650398681161705, -0.12003159278619488, 0.1170435600826139, -0.058626210544961734, 0.001692458726726212, 0.09646009240735817, 0.12764827612058058, -0.0009577439388038811, -0.31878443520680605, 0.2731609119222845, 0.023636595109132463, 0.13517653498834428, 0.07675339206336783, 0.14421453047543764, 0.021454911532492696, 0.04517693094375146, 0.0773765624377069, -0.1728911314501958, 0.06977803422580961, 0.24837268117841307, 0.17337761277176597, 0.23126976197207724, -0.351242926286597, -0.18614175595942287, 0.20973671692866389, 0.13130051578831423, 0.0949945961299411, 0.03455159807548422, -0.13756350839634301, 0.17944930926929195, -0.0701783822723819, -0.11820367927389493, -0.008851443736494838, 0.055574162557095914, -0.049920847277984126, -0.2531068116113856, 0.0030717677827533725, 0.09047599020902511, 0.02070893226126274, 0.0788277135738595, -0.18862094250149453, -0.04399214135613162, 0.08803031096964345, -0.0864803543561822, 0.12107767995407843, -0.008296901998810235, -0.0904141983450423, -0.19028046566315673, 0.3285005610905119, -0.06475174520571775, -0.10821898319551695, 0.17343666627710047, -0.1564612038550781, -0.2113261724776634, 0.1516369280757031, 0.1450100614318064, 0.1422744332063761, -0.1175223544005539, 0.10547838675817214, -0.08908938375542631, 0.17185984607590557, 0.19738656433520618, -0.016701490602006652, 0.10424903715420124, 0.19067559218998034, 0.2251190374966815, 0.17686077631225197, -0.009134551358793479, 0.037737652727800025, -0.2469555977992453, -0.10833883675880131, -0.2137625240199789, 0.048338431617492565, -0.192026704897916, -0.1708461624420398, 0.38221198199740186, 0.10476089971973658, 0.2459532285070086, 0.17523414247027774, 0.2332232934048308, 0.0823432593174943, 0.10051649279071839, 0.21408869591183388, 0.13292500751835484, 0.12039179064112006, -0.03201303335063003, -0.1442602980783017, 0.08631104035172742, 0.12083621551380395] |
707.2761 | Muon-fluorine entangled states in molecular magnets | The information accessible from a muon-spin relaxation experiment is often
limited since we lack knowledge of the precise muon stopping site. We
demonstrate here the possibility of localizing a spin polarized muon in a known
stopping state in a molecular material containing fluorine. The muon-spin
precession that results from the entangled nature of the muon-spin and
surrounding nuclear spins is sensitive to the nature of the stopping site and
we use this property to identify three classes of site. We are also able to
describe the extent to which the muon distorts its surroundings.
| cond-mat.str-el | the information accessible from a muonspin relaxation experiment is often limited since we lack knowledge of the precise muon stopping site we demonstrate here the possibility of localizing a spin polarized muon in a known stopping state in a molecular material containing fluorine the muonspin precession that results from the entangled nature of the muonspin and surrounding nuclear spins is sensitive to the nature of the stopping site and we use this property to identify three classes of site we are also able to describe the extent to which the muon distorts its surroundings | [['the', 'information', 'accessible', 'from', 'a', 'muonspin', 'relaxation', 'experiment', 'is', 'often', 'limited', 'since', 'we', 'lack', 'knowledge', 'of', 'the', 'precise', 'muon', 'stopping', 'site', 'we', 'demonstrate', 'here', 'the', 'possibility', 'of', 'localizing', 'a', 'spin', 'polarized', 'muon', 'in', 'a', 'known', 'stopping', 'state', 'in', 'a', 'molecular', 'material', 'containing', 'fluorine', 'the', 'muonspin', 'precession', 'that', 'results', 'from', 'the', 'entangled', 'nature', 'of', 'the', 'muonspin', 'and', 'surrounding', 'nuclear', 'spins', 'is', 'sensitive', 'to', 'the', 'nature', 'of', 'the', 'stopping', 'site', 'and', 'we', 'use', 'this', 'property', 'to', 'identify', 'three', 'classes', 'of', 'site', 'we', 'are', 'also', 'able', 'to', 'describe', 'the', 'extent', 'to', 'which', 'the', 'muon', 'distorts', 'its', 'surroundings']] | [-0.07891519349861018, 0.1719852670373276, -0.04300664807174434, 0.09305210283367914, -0.10187667211210553, -0.08662475781772841, 0.09844430386177958, 0.3940701944396851, -0.3139332400664608, -0.2806861435479306, 0.08618220758990959, -0.3094074538651299, -0.025670114017904123, 0.18607940384622743, 0.013362572226237426, -0.018709300542275046, 0.02721318510792, 0.050629924408140334, -0.0776533389518513, -0.2078341888065668, 0.28351023733511227, 0.09270612680987317, 0.2685115754956062, 0.0927830834357821, 0.11868233935154499, 0.0027790209476618055, -0.0046952157751954295, -0.006325294006061047, -0.12742530381434877, 0.09981347428278085, 0.2342211257445284, 0.09645416210108299, 0.17545209594189803, -0.43020128438922955, -0.1421082457502749, 0.07500104498281639, 0.08300191698784128, 0.17320583848792942, -0.08627625733138398, -0.27925078865101044, 0.058539697573460794, -0.14184961559875134, -0.15288563567075006, -0.10463479204608643, -0.008744979302022369, 0.006090085628997296, -0.25249266847869023, 0.07140730796078408, 0.07476420304459332, 0.0741419051241308, -0.09275144902479023, -0.0825196853046246, 0.014419966493733227, 0.106508356628028, 0.07082016815857446, 0.05851169295752659, 0.17313776076573165, -0.11469292476961508, -0.12209501837385184, 0.3494412758328179, -0.010258815484121442, -0.15672672524097117, 0.21922264105462014, -0.23162301120031228, -0.12174284005379106, 0.16732325806143752, 0.14195367604174572, 0.16487986224386444, -0.2126303981454607, 0.019768244843246376, -0.0520463891902027, 0.20279649498456337, -0.003834812067191493, 0.06308543732132207, 0.2284754198440846, 0.20750720081652732, 0.06538199590756855, 0.16535156495879066, -0.19088263853274762, -0.07216630132492394, -0.2541425707948176, -0.1494348175585904, -0.20267270014750116, 0.11077126652557165, 0.020263288527085605, -0.06237110602570341, 0.401802368610701, 0.1600610339479085, 0.1724696982840195, -0.07521512076887797, 0.28838057769462466, -0.010675561272519384, 0.058338438254840516, 0.04433718124563073, 0.25676592645492957, 0.17586407653474684, 0.10389472163738088, -0.33862485002944287, 0.11602414934895933, 0.003468219943820162] |
707.2762 | Darboux Transformation of the Green Function for the Dirac Equation with
the Generalized Potential | We consider the Darboux transformation of the Green functions of the regular
boundary problem of the one-dimensional stationary Dirac equation. We obtained
the Green functions of the transformed Dirac equation with the initial regular
boundary conditions. We also construct the formula for the unabridged trace of
the difference of the transformed and the initial Green functions of the
regular boundary problem of the one-dimensional stationary Dirac equation. We
illustrate our findings by the consideration of the Darboux transformation for
the Green function of the free particle Dirac equation on an interval.
| hep-th | we consider the darboux transformation of the green functions of the regular boundary problem of the onedimensional stationary dirac equation we obtained the green functions of the transformed dirac equation with the initial regular boundary conditions we also construct the formula for the unabridged trace of the difference of the transformed and the initial green functions of the regular boundary problem of the onedimensional stationary dirac equation we illustrate our findings by the consideration of the darboux transformation for the green function of the free particle dirac equation on an interval | [['we', 'consider', 'the', 'darboux', 'transformation', 'of', 'the', 'green', 'functions', 'of', 'the', 'regular', 'boundary', 'problem', 'of', 'the', 'onedimensional', 'stationary', 'dirac', 'equation', 'we', 'obtained', 'the', 'green', 'functions', 'of', 'the', 'transformed', 'dirac', 'equation', 'with', 'the', 'initial', 'regular', 'boundary', 'conditions', 'we', 'also', 'construct', 'the', 'formula', 'for', 'the', 'unabridged', 'trace', 'of', 'the', 'difference', 'of', 'the', 'transformed', 'and', 'the', 'initial', 'green', 'functions', 'of', 'the', 'regular', 'boundary', 'problem', 'of', 'the', 'onedimensional', 'stationary', 'dirac', 'equation', 'we', 'illustrate', 'our', 'findings', 'by', 'the', 'consideration', 'of', 'the', 'darboux', 'transformation', 'for', 'the', 'green', 'function', 'of', 'the', 'free', 'particle', 'dirac', 'equation', 'on', 'an', 'interval']] | [-0.1562745295219369, 0.06970995044029334, -0.11117948213551235, 0.07779383536551025, -0.05518312099041765, -0.07982770582292598, 0.0212446815221683, 0.3139628856391697, -0.2865130176747238, -0.19659266641343032, 0.10050985915074637, -0.28052157182777354, -0.17375305466927016, 0.16410992018863108, 0.03290065668605186, 0.107632418562259, 0.060032835524467816, 0.03194694214879156, -0.17930239918999946, -0.21813811246397813, 0.4268798868652883, -0.051009205159741444, 0.2536084294974149, 0.02694306874668205, 0.1254923942109959, 0.06527163940840043, -0.014726633464426294, -0.0469115852777447, -0.15808133316830128, 0.09911395435651335, 0.140426601764265, 0.07644913228392437, 0.23222321361958326, -0.4231266061887964, -0.19210653218880788, 0.08185535948851484, 0.105144623610713, 0.07709810751807558, -0.06576155854394189, -0.3249472776161773, 0.028611820715653536, -0.09360399805418737, -0.2717020175071781, 0.03861131063652235, 0.00827461182764107, 0.079307354163445, -0.25165768757789997, 0.08760367345394615, 0.05383344514520614, -0.03588787230898391, -0.18554301223727865, -0.10349392011802602, -0.09754861373669253, 0.10997232791691364, -0.009557644014021607, -0.013852395516421114, 0.04879905584339912, -0.10794702073518228, -0.029123609291983175, 0.3757754734277234, -0.08017079649329349, -0.2959147273347928, 0.11764280713971827, -0.158642475549541, -0.08543817679510339, 0.10653750012004441, 0.10958709901423899, 0.1683488930422035, -0.19655900382037675, 0.14909948653699498, -0.08718706463888329, 0.05094530499363727, 0.11296205461066175, -0.03720672526089781, 0.15197499784139487, 0.07371544250502036, 0.09195637565290371, 0.21221375121520117, -0.01856673343086636, -0.11979634640226652, -0.36932897537046083, -0.20171371639634555, -0.22375245839562063, 0.08208485977253416, -0.12417227347559874, -0.25415120814200287, 0.4617275440103405, 0.09915149795239443, 0.14622689083546073, 0.06990272864944987, 0.1974644055897063, 0.2887600577183088, 0.011755831805723054, 0.040676244790409946, 0.15114959746926696, 0.141067716678103, 0.12709466325999288, -0.2925590715514353, -0.06607645413336846, 0.15861402548194586] |
707.2763 | Large Area Growth of Aligned CNT Arrays on Spheres: Towards the Large
Scale and Continuous Production | A novel strategy for the large scale and continuous production of aligned
carbon nanotube arrays using millimeter-diameter spheres as growth substrates
is reported. The present technique is more productive than the conventional
process on flat wafers because of the higher available growth surface and the
good fluidity of the spherical substrates. It can be adapted for the industrial
production and application of aligned carbon nanotube arrays with lengths up to
millimeter.
| cond-mat.mtrl-sci cond-mat.other | a novel strategy for the large scale and continuous production of aligned carbon nanotube arrays using millimeterdiameter spheres as growth substrates is reported the present technique is more productive than the conventional process on flat wafers because of the higher available growth surface and the good fluidity of the spherical substrates it can be adapted for the industrial production and application of aligned carbon nanotube arrays with lengths up to millimeter | [['a', 'novel', 'strategy', 'for', 'the', 'large', 'scale', 'and', 'continuous', 'production', 'of', 'aligned', 'carbon', 'nanotube', 'arrays', 'using', 'millimeterdiameter', 'spheres', 'as', 'growth', 'substrates', 'is', 'reported', 'the', 'present', 'technique', 'is', 'more', 'productive', 'than', 'the', 'conventional', 'process', 'on', 'flat', 'wafers', 'because', 'of', 'the', 'higher', 'available', 'growth', 'surface', 'and', 'the', 'good', 'fluidity', 'of', 'the', 'spherical', 'substrates', 'it', 'can', 'be', 'adapted', 'for', 'the', 'industrial', 'production', 'and', 'application', 'of', 'aligned', 'carbon', 'nanotube', 'arrays', 'with', 'lengths', 'up', 'to', 'millimeter']] | [-0.07779885708587245, 0.1597590370103717, -0.00836781397062753, -0.016527762016916574, -0.032271425904972215, -0.17180431460895176, -0.006761259070065404, 0.4723504413318421, -0.2242030775706683, -0.2760653545065517, 0.12859278015925416, -0.25424907385105533, -0.090790258454425, 0.2529982103433992, 0.005442282616526687, 0.056937144222735825, 0.06759358098996537, -0.0924349578629647, -0.023709557978768964, -0.22669028200741326, 0.25320886284379024, 0.12491866569699986, 0.39119821407699157, 0.07976783573228334, 0.06060156743707401, -0.020791891117447187, 0.030343862617987074, 0.03051834533523236, -0.1448300814322595, 0.20885602946260146, 0.20978206805552224, 0.0033640053322804824, 0.17776515149910535, -0.48301340149981636, -0.19821820945612023, 0.0379740834236145, 0.11281771941908768, 0.09257217809291822, -0.053916420973213725, -0.20268937956009592, 0.11152919554151594, -0.16142340299806424, -0.1425621864585472, -0.00574783862435392, 0.008124346578759807, 0.02324956905130031, -0.2441553300346381, 0.029086458875930737, 0.023398029977189642, 0.04027313495587025, -0.03123686684162489, -0.13368379130427327, -0.08746517348502364, 0.09326924702285656, 0.038197480334617596, 0.022130928714094417, 0.24271940986093665, -0.07736733132041991, -0.09473357296415738, 0.3991848969033786, -0.08731599073362303, -0.17505553867667914, 0.2191050039072122, -0.1423502135838914, -0.07710718104083623, 0.18038397801241704, 0.19060469475475006, 0.16286292962197746, -0.14606821982722198, 0.039741396362660455, 0.024833035402532136, 0.18938678211998194, 0.14250555581280164, 0.021278986240005387, 0.2556262440813173, 0.29311186566150615, 0.07153240951842495, 0.15940130456583573, -0.1074643452219399, -0.03918579054464187, -0.20710939937603792, -0.22873618432453702, -0.18673247987670558, 0.0605732713875893, -0.10058955582062482, -0.207726854671325, 0.29305896021957906, 0.05033421787832464, 0.1475184307699757, 0.050036050302774776, 0.2897120111222778, 0.024422487062734685, 0.1706646241114608, -0.021052426671875374, 0.2298004853406123, 0.1347555576956698, 0.12744312885749554, -0.13297755652040774, 0.08331470804821167, -0.055060396546364895] |
707.2764 | Velocities from Cross-Correlation: A Guide for Self-Improvement | The measurement of Doppler velocity shifts in spectra is a ubiquitous theme
in astronomy, usually handled by computing the cross-correlation of the
signals, and finding the location of its maximum. This paper addresses the
problem of the determination of wavelength or velocity shifts among multiple
spectra of the same, or very similar, objects. We implement the classical
cross-correlation method and experiment with several simple models to determine
the location of the maximum of the cross-correlation function. We propose a new
technique, 'self-improvement', to refine the derived solutions by requiring
that the relative velocity for any given pair of spectra is consistent with all
others. By exploiting all available information, spectroscopic surveys
involving large numbers of similar objects may improve their precision
significantly. As an example, we simulate the analysis of a survey of G-type
stars with the SDSS instrumentation. Applying 'self-improvement' refines
relative radial velocities by more than 50% at low signal-to-noise ratio. The
concept is equally applicable to the problem of combining a series of
spectroscopic observations of the same object, each with a different Doppler
velocity or instrument-related offset, into a single spectrum with an enhanced
signal-to-noise ratio.
| astro-ph | the measurement of doppler velocity shifts in spectra is a ubiquitous theme in astronomy usually handled by computing the crosscorrelation of the signals and finding the location of its maximum this paper addresses the problem of the determination of wavelength or velocity shifts among multiple spectra of the same or very similar objects we implement the classical crosscorrelation method and experiment with several simple models to determine the location of the maximum of the crosscorrelation function we propose a new technique selfimprovement to refine the derived solutions by requiring that the relative velocity for any given pair of spectra is consistent with all others by exploiting all available information spectroscopic surveys involving large numbers of similar objects may improve their precision significantly as an example we simulate the analysis of a survey of gtype stars with the sdss instrumentation applying selfimprovement refines relative radial velocities by more than 50 at low signaltonoise ratio the concept is equally applicable to the problem of combining a series of spectroscopic observations of the same object each with a different doppler velocity or instrumentrelated offset into a single spectrum with an enhanced signaltonoise ratio | [['the', 'measurement', 'of', 'doppler', 'velocity', 'shifts', 'in', 'spectra', 'is', 'a', 'ubiquitous', 'theme', 'in', 'astronomy', 'usually', 'handled', 'by', 'computing', 'the', 'crosscorrelation', 'of', 'the', 'signals', 'and', 'finding', 'the', 'location', 'of', 'its', 'maximum', 'this', 'paper', 'addresses', 'the', 'problem', 'of', 'the', 'determination', 'of', 'wavelength', 'or', 'velocity', 'shifts', 'among', 'multiple', 'spectra', 'of', 'the', 'same', 'or', 'very', 'similar', 'objects', 'we', 'implement', 'the', 'classical', 'crosscorrelation', 'method', 'and', 'experiment', 'with', 'several', 'simple', 'models', 'to', 'determine', 'the', 'location', 'of', 'the', 'maximum', 'of', 'the', 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'doppler', 'velocity', 'or', 'instrumentrelated', 'offset', 'into', 'a', 'single', 'spectrum', 'with', 'an', 'enhanced', 'signaltonoise', 'ratio']] | [-0.11527664202302204, 0.08970788144644375, -0.07617714354327243, 0.04109329725554409, -0.09241064295760895, -0.10836841545655931, 0.04867741727135389, 0.3599032564186736, -0.24748187274917177, -0.352638532535026, 0.08176996226018099, -0.27533904384625585, -0.06778486499893724, 0.2301886599155535, -0.050261063013519895, 0.02433719893788772, 0.08221639163951439, 0.008964095254869837, -0.08323249837359119, -0.2085412005281174, 0.30735445410552387, 0.09588895547448804, 0.24710689475392236, -0.03240573331958761, 0.08859210403476793, 0.01656360674992596, -0.11843268426968472, 0.043322079950992604, -0.10895536325670516, 0.1390175591382247, 0.2224690342869795, 0.15805023377516159, 0.2496566560952679, -0.31026848097282805, -0.18925771820113846, 0.09984443857530623, 0.16033687031166138, 0.09441043757098286, -0.02707765878731152, 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-0.13140272962321575, 0.39282546968346366, 0.15371109508376227, 0.25055264699591423, 0.07300966468143374, 0.3475306663466127, 0.13181439525092412, 0.09172730869858672, 0.03744806541178964, 0.25389217141231424, 0.14755858145776743, 0.10626372847411977, -0.2127203128484421, 0.06618401309916455, 0.029349074572612727] |
707.2765 | Magnetic domain fluctuations in an antiferromagnetic film observed with
coherent resonant soft x-ray scattering | We report the direct observation of slow fluctuations of helical
antiferromagnetic domains in an ultra-thin holmium film using coherent resonant
magnetic x-ray scattering. We observe a gradual increase of the fluctuations in
the speckle pattern with increasing temperature, while at the same time a
static contribution to the speckle pattern remains. This finding indicates that
domain-wall fluctuations occur over a large range of time scales. We ascribe
this non-ergodic behavior to the strong dependence of the fluctuation rate on
the local thickness of the film.
| cond-mat.other cond-mat.dis-nn cond-mat.mes-hall cond-mat.str-el | we report the direct observation of slow fluctuations of helical antiferromagnetic domains in an ultrathin holmium film using coherent resonant magnetic xray scattering we observe a gradual increase of the fluctuations in the speckle pattern with increasing temperature while at the same time a static contribution to the speckle pattern remains this finding indicates that domainwall fluctuations occur over a large range of time scales we ascribe this nonergodic behavior to the strong dependence of the fluctuation rate on the local thickness of the film | [['we', 'report', 'the', 'direct', 'observation', 'of', 'slow', 'fluctuations', 'of', 'helical', 'antiferromagnetic', 'domains', 'in', 'an', 'ultrathin', 'holmium', 'film', 'using', 'coherent', 'resonant', 'magnetic', 'xray', 'scattering', 'we', 'observe', 'a', 'gradual', 'increase', 'of', 'the', 'fluctuations', 'in', 'the', 'speckle', 'pattern', 'with', 'increasing', 'temperature', 'while', 'at', 'the', 'same', 'time', 'a', 'static', 'contribution', 'to', 'the', 'speckle', 'pattern', 'remains', 'this', 'finding', 'indicates', 'that', 'domainwall', 'fluctuations', 'occur', 'over', 'a', 'large', 'range', 'of', 'time', 'scales', 'we', 'ascribe', 'this', 'nonergodic', 'behavior', 'to', 'the', 'strong', 'dependence', 'of', 'the', 'fluctuation', 'rate', 'on', 'the', 'local', 'thickness', 'of', 'the', 'film']] | [-0.21220329069696806, 0.22578202366216027, -0.090840690796647, 0.02521321484271218, -0.008232146090663531, -0.0305151523090899, 0.06827276485752971, 0.38676206565955107, -0.3152573451618938, -0.29085736500428006, 0.034901153600281655, -0.2928340671693577, -0.0892022984513246, 0.16819499169257196, 0.034123799243174935, 0.011324583032332799, -0.01778708428473157, -0.03844920931493535, -0.09227843509083065, -0.1761065882000634, 0.2840333165039363, 0.06510786059696008, 0.34553050076698555, 0.0934165277518332, 0.06542538533754208, 0.030330315988291712, 0.027020119653795572, 0.029035253362620576, -0.12165302105345557, 0.010064078007331665, 0.20743356525404927, -0.06874377941849696, 0.21043632842997528, -0.4456070021233138, -0.22237849879790755, 0.0625710637856494, 0.16254564668907895, 0.170731584681198, -0.05745350381578593, -0.24358014355906668, 0.06049101236550247, -0.09734068863532122, -0.15426380745998092, -0.028755205477286567, 0.03618695245069616, 0.010683667218066094, -0.25944198492695303, 0.14768602489219868, 0.10574853226323339, 0.12671101917238797, -0.07505843007717938, -0.0392564212629462, -0.0011779149035539697, 0.07122530332930824, 0.11461511950063355, 0.06552622986080892, 0.18533177076126722, -0.13375624349368187, -0.09987762068288729, 0.2873338259715477, -0.11397990716949982, -0.045807445008198125, 0.16533832450342528, -0.2537094768355874, -0.07247974177041804, 0.23302646165932803, 0.16380601066219455, 0.11594541329780922, -0.08497860864462221, 0.028016165617908186, -0.009093233373235254, 0.28259181186337684, 0.07430441145072965, 0.08394318770562463, 0.24369448727982887, 0.2451357361052514, 0.048788431489511445, 0.17429727504358572, -0.17745561466881019, -0.06674060903708724, -0.24382729626753752, -0.10696990294313496, -0.1781878812074223, 0.04883159063756466, -0.11845369468107546, -0.22702171913183788, 0.40197569088024254, 0.18068846535923727, 0.21500720852328575, 0.008113606224822647, 0.2478826884399442, 0.10771318827550311, 0.05850964842145057, 0.019206548049388563, 0.2714038373025901, 0.11736219010918456, 0.19568643618292889, -0.3293123408713762, 0.07936986574410078, -0.05186938061104978] |
707.2766 | A two-state model for helicase translocation and unwinding of nucleic
acids | Helicases are molecular motors that unwind double-stranded nucleic acids
(dsNA), such as DNA and RNA). Typically a helicase translocates along one of
the NA single strands while unwinding and uses adenosine triphosphate (ATP)
hydrolysis as an energy source. Here we model of a helicase motor that can
switch between two states, which could represent two different points in the
ATP hydrolysis cycle. Our model is an extension of the earlier
Betterton-J\"ulicher model of helicases to incorporate switching between two
states. The main predictions of the model are the speed of unwinding of the
dsNA and fluctuations around the average unwinding velocity. Motivated by a
recent claim that the NS3 helicase of Hepatitis C virus follows a flashing
ratchet mechanism, we have compared the experimental results for the NS3
helicase with a special limit of our model which corresponds to the flashing
ratchet scenario. Our model accounts for one key feature of the experimental
data on NS3 helicase. However, contradictory observations in experiments
carried out under different conditions limit the ability to compare the model
to experiments.
| physics.bio-ph | helicases are molecular motors that unwind doublestranded nucleic acids dsna such as dna and rna typically a helicase translocates along one of the na single strands while unwinding and uses adenosine triphosphate atp hydrolysis as an energy source here we model of a helicase motor that can switch between two states which could represent two different points in the atp hydrolysis cycle our model is an extension of the earlier bettertonjulicher model of helicases to incorporate switching between two states the main predictions of the model are the speed of unwinding of the dsna and fluctuations around the average unwinding velocity motivated by a recent claim that the ns3 helicase of hepatitis c virus follows a flashing ratchet mechanism we have compared the experimental results for the ns3 helicase with a special limit of our model which corresponds to the flashing ratchet scenario our model accounts for one key feature of the experimental data on ns3 helicase however contradictory observations in experiments carried out under different conditions limit the ability to compare the model to experiments | [['helicases', 'are', 'molecular', 'motors', 'that', 'unwind', 'doublestranded', 'nucleic', 'acids', 'dsna', 'such', 'as', 'dna', 'and', 'rna', 'typically', 'a', 'helicase', 'translocates', 'along', 'one', 'of', 'the', 'na', 'single', 'strands', 'while', 'unwinding', 'and', 'uses', 'adenosine', 'triphosphate', 'atp', 'hydrolysis', 'as', 'an', 'energy', 'source', 'here', 'we', 'model', 'of', 'a', 'helicase', 'motor', 'that', 'can', 'switch', 'between', 'two', 'states', 'which', 'could', 'represent', 'two', 'different', 'points', 'in', 'the', 'atp', 'hydrolysis', 'cycle', 'our', 'model', 'is', 'an', 'extension', 'of', 'the', 'earlier', 'bettertonjulicher', 'model', 'of', 'helicases', 'to', 'incorporate', 'switching', 'between', 'two', 'states', 'the', 'main', 'predictions', 'of', 'the', 'model', 'are', 'the', 'speed', 'of', 'unwinding', 'of', 'the', 'dsna', 'and', 'fluctuations', 'around', 'the', 'average', 'unwinding', 'velocity', 'motivated', 'by', 'a', 'recent', 'claim', 'that', 'the', 'ns3', 'helicase', 'of', 'hepatitis', 'c', 'virus', 'follows', 'a', 'flashing', 'ratchet', 'mechanism', 'we', 'have', 'compared', 'the', 'experimental', 'results', 'for', 'the', 'ns3', 'helicase', 'with', 'a', 'special', 'limit', 'of', 'our', 'model', 'which', 'corresponds', 'to', 'the', 'flashing', 'ratchet', 'scenario', 'our', 'model', 'accounts', 'for', 'one', 'key', 'feature', 'of', 'the', 'experimental', 'data', 'on', 'ns3', 'helicase', 'however', 'contradictory', 'observations', 'in', 'experiments', 'carried', 'out', 'under', 'different', 'conditions', 'limit', 'the', 'ability', 'to', 'compare', 'the', 'model', 'to', 'experiments']] | [-0.13541527288832836, 0.1344885595769821, -0.05056468798379813, 0.012043029025330075, -0.0021858736593276264, -0.1953464346671743, 0.09443145289218852, 0.38382178928170885, -0.24638098150491713, -0.27113367699984725, 0.02094843489650105, -0.2720824694221041, -0.1781589851064408, 0.19905112962504581, -0.04201336606705029, -0.006666009447404316, 0.08632597356968161, 0.0019016017392277718, 0.1080428869323805, -0.16354804583692126, 0.18937568247850453, 0.09284010693430901, 0.3013807488578771, 0.06384841320071635, 0.1166661317812811, -0.06703021771158092, 0.03905562495147543, -0.04527688157145998, -0.13312210179661632, 0.11776887875382921, 0.16925408762480532, 0.0901754860393703, 0.23907950083326016, -0.4924329313689045, -0.24071437527558634, 0.07524451513375555, 0.14672090338276966, 0.15702046819962562, -0.027542018398775587, -0.249468804991671, 0.07472947623048509, -0.17617431083161916, -0.07958886240209852, -0.042317351532567826, 0.009969640304999692, 0.09776085423604984, -0.24343556504696606, 0.07129289280091013, 0.0609408320912293, 0.08436019151338509, -0.09401114423393404, -0.11448180805891753, -0.10363321969152561, 0.15391413422301412, 0.10000155504726406, 0.049830156027206356, 0.24453803818140712, -0.09958908820258719, -0.17962108824934278, 0.35795184638883387, -0.05408467263781599, -0.1626038501730987, 0.19641017711987452, -0.05438479540071317, -0.15021508171755288, 0.11383691288331257, 0.10394434412010015, 0.09121595322686647, -0.14601512075002704, -0.01891983724432066, -0.05960450178012252, 0.18456387541123798, 0.07993612485538636, -0.08583512812586767, 0.1995044955345137, 0.22816313298951302, -0.0110453926439264, 0.1306770015521241, -0.11275064933912031, -0.1814291220956615, -0.27922698791537964, -0.17347330832720867, -0.12607541082826043, 0.020312878732968654, -0.060779175472063275, -0.11069157334310668, 0.4054395875121866, 0.14911956581952315, 0.20689042967345034, 0.06259339413871723, 0.27725398252851197, -0.015876070523767598, 0.09023272971090461, -0.010112379103832479, 0.1734405384468846, 0.07137924001951303, 0.07834588698909752, -0.2684114394536508, 0.13596988280503344, 0.009365451857447624] |
707.2767 | Strange quark contributions to neutrino and antineutrino nucleus
scattering via neutral current in quasi-elastic region | Strange quark contributions to the neutral current reaction in the neutrino
scattering are investigated on the nucleon level and extended to the $^{12}$C
target nucleus through the neutrino-induced knocked-out nucleon process in the
quasi-elastic region within the framework of a relativistic single particle
model. The incident energy range between 500 MeV and 1.0 GeV is used for the
neutrino(antineutrino) scattering. Effects of the final state interaction for
the knocked-out nucleon are included by a relativistic optical potential. We
found that the sensitivity of the strange quark contents could be salient on
the asymmetry between neutrino and antineutrino scattering cross sections. In
specific, $A (\nu ({\bar \nu}), \nu^{'} ({\bar \nu}^{'}) N)$ reaction is shown
to be very sensitive test in the searches of the strangeness.
| nucl-th | strange quark contributions to the neutral current reaction in the neutrino scattering are investigated on the nucleon level and extended to the 12c target nucleus through the neutrinoinduced knockedout nucleon process in the quasielastic region within the framework of a relativistic single particle model the incident energy range between 500 mev and 10 gev is used for the neutrinoantineutrino scattering effects of the final state interaction for the knockedout nucleon are included by a relativistic optical potential we found that the sensitivity of the strange quark contents could be salient on the asymmetry between neutrino and antineutrino scattering cross sections in specific a nu bar nu nu bar nu n reaction is shown to be very sensitive test in the searches of the strangeness | [['strange', 'quark', 'contributions', 'to', 'the', 'neutral', 'current', 'reaction', 'in', 'the', 'neutrino', 'scattering', 'are', 'investigated', 'on', 'the', 'nucleon', 'level', 'and', 'extended', 'to', 'the', '12c', 'target', 'nucleus', 'through', 'the', 'neutrinoinduced', 'knockedout', 'nucleon', 'process', 'in', 'the', 'quasielastic', 'region', 'within', 'the', 'framework', 'of', 'a', 'relativistic', 'single', 'particle', 'model', 'the', 'incident', 'energy', 'range', 'between', '500', 'mev', 'and', '10', 'gev', 'is', 'used', 'for', 'the', 'neutrinoantineutrino', 'scattering', 'effects', 'of', 'the', 'final', 'state', 'interaction', 'for', 'the', 'knockedout', 'nucleon', 'are', 'included', 'by', 'a', 'relativistic', 'optical', 'potential', 'we', 'found', 'that', 'the', 'sensitivity', 'of', 'the', 'strange', 'quark', 'contents', 'could', 'be', 'salient', 'on', 'the', 'asymmetry', 'between', 'neutrino', 'and', 'antineutrino', 'scattering', 'cross', 'sections', 'in', 'specific', 'a', 'nu', 'bar', 'nu', 'nu', 'bar', 'nu', 'n', 'reaction', 'is', 'shown', 'to', 'be', 'very', 'sensitive', 'test', 'in', 'the', 'searches', 'of', 'the', 'strangeness']] | [-0.03962621376793381, 0.2693631023303756, -0.05816022966164089, 0.17386002841294612, 0.003653965226417753, -0.07697579229716212, 0.0680162732906249, 0.3234562170241148, -0.19796241889707744, -0.266381558676761, -0.09961211442902324, -0.34894664406085446, 0.03159837547742251, 0.12602475588491577, 0.1362058130398509, 0.05657233195679803, 0.04947417036295989, 0.057651981966750275, -0.03135692849267094, -0.1565495262151554, 0.33560252647786853, 0.0965473921237243, 0.2149974760118752, 0.18839293073647095, 0.04074590260936548, 0.015692090069229205, -0.04781457317257, -0.10838566235296669, -0.1002402841097665, 0.03509430465243396, 0.2503243766818008, 0.048993627908789826, 0.08369188572490407, -0.38454791835899793, -0.13917018583742902, 0.10792703350119653, 0.13922127463944978, 0.08895977430285947, -0.05590708181449783, -0.3304578386652734, 0.061602963525201046, -0.23431237862114945, -0.12895577338208714, -0.04763664509124693, 0.055872187251225114, 0.00832314972555445, -0.3041109861655822, 0.08176779873000699, -0.05631391988173427, -0.027107408872031936, -0.065800319778763, -0.24244472911701567, -0.03607021416575017, 0.05611863116838879, 0.10744399272704369, 0.09184285965649554, 0.22245310641254387, -0.18194132876552402, -0.08238811588530699, 0.4128591088698276, -0.059004319268428994, -0.21864193278334795, 0.10161596309438709, -0.2208927135554052, -0.08459180852233042, 0.20761441839520908, 0.22031422467121192, 0.08026068957711217, -0.21004209264497004, 0.08217207268640894, -0.03736528537176069, 0.17966423636009435, 0.10480824855884778, 0.013797256346386406, 0.21285152755116277, 0.25091723946764344, -0.012258762628921577, 0.012902046228954267, -0.22015757231988134, -0.05815343862219203, -0.3733938850101925, -0.07623388617573637, -0.07987363676300212, 0.0865334874383294, -0.03135413019657379, -0.04181793419669585, 0.3924223389683081, 0.06674875633149396, 0.22822859816839017, -0.07692495117624921, 0.2938189350346464, 0.09183387218734189, 0.06283344244659547, 0.057890169694268655, 0.332993601077056, 0.20019687619248044, 0.1402220280593141, -0.2964582639040365, 0.031119245093225712, 0.011946115808020677] |
707.2768 | Incompressible fluid inside an astrophysical black hole? | It is argued that under natural hypothesis the Fermions inside a black hole
formed after the collapse of a neutron star could form a non compressible fluid
(well before reaching the Planck scale) leading to some features of integer
Quantum Hall Effect. The relations with black hole entropy are analyzed.
Insights coming from Quantum Hall Effect are used to analyze the coupling with
Einstein equations. Connections with some cosmological scenarios and with
higher dimensional Quantum Hall Effect are shortly pointed out.
| gr-qc astro-ph cond-mat.mes-hall hep-th | it is argued that under natural hypothesis the fermions inside a black hole formed after the collapse of a neutron star could form a non compressible fluid well before reaching the planck scale leading to some features of integer quantum hall effect the relations with black hole entropy are analyzed insights coming from quantum hall effect are used to analyze the coupling with einstein equations connections with some cosmological scenarios and with higher dimensional quantum hall effect are shortly pointed out | [['it', 'is', 'argued', 'that', 'under', 'natural', 'hypothesis', 'the', 'fermions', 'inside', 'a', 'black', 'hole', 'formed', 'after', 'the', 'collapse', 'of', 'a', 'neutron', 'star', 'could', 'form', 'a', 'non', 'compressible', 'fluid', 'well', 'before', 'reaching', 'the', 'planck', 'scale', 'leading', 'to', 'some', 'features', 'of', 'integer', 'quantum', 'hall', 'effect', 'the', 'relations', 'with', 'black', 'hole', 'entropy', 'are', 'analyzed', 'insights', 'coming', 'from', 'quantum', 'hall', 'effect', 'are', 'used', 'to', 'analyze', 'the', 'coupling', 'with', 'einstein', 'equations', 'connections', 'with', 'some', 'cosmological', 'scenarios', 'and', 'with', 'higher', 'dimensional', 'quantum', 'hall', 'effect', 'are', 'shortly', 'pointed', 'out']] | [-0.14132557942727467, 0.20969753681084163, -0.11943050396893128, 0.10621914010707657, -0.09522335385374817, -0.19361766399298277, -0.002927232438836385, 0.2636357034430092, -0.24057025214036307, -0.2830108746104402, 0.10155368814198876, -0.31599856685433125, -0.13020805637984548, 0.216718949423528, 0.0003333170610813447, 0.0702345500021805, 0.012655124017957277, 0.03871559454013168, -0.11793278324716713, -0.28924951022404627, 0.37259932165896453, 0.08511659153377821, 0.22806375979641338, 0.010815983801202729, 0.09696474125074153, -0.07524735733498762, 0.0003296076147644608, 0.10704059185414219, -0.15458738400622768, -0.02616921834141752, 0.22385352416492907, 0.03567562300573896, 0.22851774721969792, -0.4544586984377446, -0.22953375010394755, 0.027160210868366706, 0.07659754108200655, 0.18216067642249442, -0.08682811377357323, -0.3177732192324819, 0.06677668713562099, -0.22832246820649338, -0.11886367416167402, -0.03947382691649743, 0.04011900223975564, -0.0832398473687562, -0.20115976241549455, 0.1164538293019121, 0.048681675124465036, -0.013784512601516865, -0.07707851228662077, -0.09267941071582889, -0.042180020106312485, 0.06549001370706124, 0.09071311726016396, -0.0058323522443296735, 0.1807988802499977, -0.14518186789306733, -0.14247192866111427, 0.4083869067699085, -0.03575330859992975, -0.1659908356765906, 0.17469425498576904, -0.22944241207966834, -0.09548228499652059, 0.09824284796752496, 0.09239715822960859, 0.06983560462191954, -0.11185427791910407, 0.08180045115655105, -0.014718527457228413, 0.12132803859465101, 0.11041963980590672, 0.08640279474288777, 0.4078716869167064, 0.12432180622155652, -0.02139816871257844, 0.17076591417239403, -0.10178402247321275, -0.13277788199829282, -0.29310640857704445, -0.14576399537884158, -0.1337758588294188, 0.17317075818995542, -0.09648472160933809, -0.1509974130578799, 0.26071351422514355, 0.11481940940261048, 0.18148819799247531, -0.012272824314825329, 0.23087734568082255, 0.11129153354300393, 0.06874115038433193, 0.0904059490091225, 0.2834872605004578, 0.20623358643763226, 0.12526214551640513, -0.2581466826190597, -0.014806668183559345, 0.08315196901237891] |
707.2769 | Dynamics of Dense Cores in the Perseus Molecular Cloud | We survey the kinematics of over one hundred and fifty candidate (and
potentially star-forming) dense cores in the Perseus molecular cloud with
pointed N2H+(1-0) and simultaneous C18O(2-1) observations. Our detection rate
of N2H+ is 62%, rising to 84% for JCMT SCUBA-selected targets. In agreement
with previous observations, we find that the dense N2H+ targets tend to display
nearly thermal linewidths, particularly those which appear to be starless
(using Spitzer data), indicating turbulent support on the small scales of
molecular clouds is minimal. For those N2H+ targets which have an associated
SCUBA dense core, we find their internal motions are more than sufficient to
provide support against the gravitational force on the cores. Comparison of the
N2H+ integrated intensity and SCUBA flux reveals fractional N2H+ abundances
between 10^-10 and 10^-9. We demonstrate that the relative motion of the dense
N2H+ gas and the surrounding C18O gas is less than the sound speed in the vast
majority of cases (~90%). The point-to-point motions we observe within larger
extinction regions appear to be insufficient to provide support against
gravity, although we sparsely sample these regions.
| astro-ph | we survey the kinematics of over one hundred and fifty candidate and potentially starforming dense cores in the perseus molecular cloud with pointed n2h10 and simultaneous c18o21 observations our detection rate of n2h is 62 rising to 84 for jcmt scubaselected targets in agreement with previous observations we find that the dense n2h targets tend to display nearly thermal linewidths particularly those which appear to be starless using spitzer data indicating turbulent support on the small scales of molecular clouds is minimal for those n2h targets which have an associated scuba dense core we find their internal motions are more than sufficient to provide support against the gravitational force on the cores comparison of the n2h integrated intensity and scuba flux reveals fractional n2h abundances between 1010 and 109 we demonstrate that the relative motion of the dense n2h gas and the surrounding c18o gas is less than the sound speed in the vast majority of cases 90 the pointtopoint motions we observe within larger extinction regions appear to be insufficient to provide support against gravity although we sparsely sample these regions | [['we', 'survey', 'the', 'kinematics', 'of', 'over', 'one', 'hundred', 'and', 'fifty', 'candidate', 'and', 'potentially', 'starforming', 'dense', 'cores', 'in', 'the', 'perseus', 'molecular', 'cloud', 'with', 'pointed', 'n2h10', 'and', 'simultaneous', 'c18o21', 'observations', 'our', 'detection', 'rate', 'of', 'n2h', 'is', '62', 'rising', 'to', '84', 'for', 'jcmt', 'scubaselected', 'targets', 'in', 'agreement', 'with', 'previous', 'observations', 'we', 'find', 'that', 'the', 'dense', 'n2h', 'targets', 'tend', 'to', 'display', 'nearly', 'thermal', 'linewidths', 'particularly', 'those', 'which', 'appear', 'to', 'be', 'starless', 'using', 'spitzer', 'data', 'indicating', 'turbulent', 'support', 'on', 'the', 'small', 'scales', 'of', 'molecular', 'clouds', 'is', 'minimal', 'for', 'those', 'n2h', 'targets', 'which', 'have', 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0.044377799861735116, -0.056336246721590585] |
707.277 | Neon Abundances from a Spitzer/IRS Survey of Wolf-Rayet Stars | We report on neon abundances derived from {\it Spitzer} high resolution
spectral data of eight Wolf-Rayet (WR) stars using the forbidden line of
[\ion{Ne}{3}] 15.56 microns. Our targets include four WN stars of subtypes
4--7, and four WC stars of subtypes 4--7. We derive ion fraction abundances
$\gamma$ of Ne^{2+} for the winds of each star. The ion fraction abundance is a
product of the ionization fraction $Q_{\rm i}$ in stage i and the abundance by
number ${\cal A}_E$ of element E relative to all nuclei. Values generally
consistent with solar are obtained for the WN stars, and values in excess of
solar are obtained for the WC stars.
| astro-ph | we report on neon abundances derived from it spitzer high resolution spectral data of eight wolfrayet wr stars using the forbidden line of ionne3 1556 microns our targets include four wn stars of subtypes 47 and four wc stars of subtypes 47 we derive ion fraction abundances gamma of ne2 for the winds of each star the ion fraction abundance is a product of the ionization fraction q_rm i in stage i and the abundance by number cal a_e of element e relative to all nuclei values generally consistent with solar are obtained for the wn stars and values in excess of solar are obtained for the wc stars | [['we', 'report', 'on', 'neon', 'abundances', 'derived', 'from', 'it', 'spitzer', 'high', 'resolution', 'spectral', 'data', 'of', 'eight', 'wolfrayet', 'wr', 'stars', 'using', 'the', 'forbidden', 'line', 'of', 'ionne3', '1556', 'microns', 'our', 'targets', 'include', 'four', 'wn', 'stars', 'of', 'subtypes', '47', 'and', 'four', 'wc', 'stars', 'of', 'subtypes', '47', 'we', 'derive', 'ion', 'fraction', 'abundances', 'gamma', 'of', 'ne2', 'for', 'the', 'winds', 'of', 'each', 'star', 'the', 'ion', 'fraction', 'abundance', 'is', 'a', 'product', 'of', 'the', 'ionization', 'fraction', 'q_rm', 'i', 'in', 'stage', 'i', 'and', 'the', 'abundance', 'by', 'number', 'cal', 'a_e', 'of', 'element', 'e', 'relative', 'to', 'all', 'nuclei', 'values', 'generally', 'consistent', 'with', 'solar', 'are', 'obtained', 'for', 'the', 'wn', 'stars', 'and', 'values', 'in', 'excess', 'of', 'solar', 'are', 'obtained', 'for', 'the', 'wc', 'stars']] | [-0.01693818335317903, 0.1644646792534601, 0.029753407012860947, 0.036784922097231845, -0.007814981179156652, -0.0604262926865852, 0.11933461850060632, 0.4061100908934518, -0.09443868748214165, -0.35355386155209056, -0.028664255146092426, -0.35037427918157643, 0.08409609569719544, 0.17708473271664438, -0.06083699186867172, -0.047293442262377576, 0.14325507953806124, -0.03219869118765928, -0.011264643788712824, -0.26797889126464725, 0.28627324005140475, 0.015153991774207464, 0.11574015029085179, -0.07630218237345279, 0.00046449305200776844, -0.1563287192903873, -0.0933221094051583, -0.008473012009980503, -0.16031373095810758, 0.06909030318018738, 0.2390894141302582, 0.1847810032044503, 0.12603022354758447, -0.31536836490138537, -0.16155222218690646, 0.05112129525729903, 0.1925178058962855, -0.008978497853537125, -0.08302369108100215, -0.19243111975353072, 0.07555001335546237, -0.1904022448385755, -0.15558911394112296, 0.06266871218017682, 0.09239010054605185, 0.08531789420845194, -0.27299234546134593, 0.10461237655706807, 0.0014060545302156781, 0.14905191649234406, -0.14475265701939524, -0.2712204382168474, -0.10679136615686326, 0.040319989099063806, -0.00528432933518801, 0.0007002685775255992, 0.142377337311498, -0.11354547802841773, -0.007689788325310305, 0.4330409427207929, -0.11247933424008941, 0.01076174794730765, 0.19352962395512602, -0.23047772849073495, -0.21730296374126165, 0.19799719734496815, 0.09035672656156951, 0.1969273009389225, -0.1547998074631862, 0.019294208912200433, 0.015297839614504483, 0.1612830837982781, 0.07411211823906612, 0.08894364656535564, 0.24489694816077612, 0.09176129363132296, -0.03576684569189739, 0.03695624985293425, -0.28342669064618853, -0.01155986819692232, -0.27743066174702513, -0.1830315152355642, -0.06630640735750569, 0.09548517861575992, -0.16887762517136354, -0.11148512733807028, 0.32088695940587464, 0.05206713257185011, 0.22622440154319284, -0.006078494356996898, 0.2342530160417987, 0.10645825869222689, 0.07746119886912682, 0.10066899459343404, 0.3097142774215037, 0.24098563259165665, 0.0761599481220064, -0.2819394822926605, 0.08421162414985399, 0.0687894935167774] |
707.2771 | The pressure confined wind of the massive and compact superstar cluster
M82-A1 | The observed parameters of the young superstar cluster M82-A1 and its
associated compact HII region are here shown to indicate a low heating
efficiency or immediate loss, through radiative cooling, of a large fraction of
the energy inserted by stellar winds and supernovae during the early evolution
of the cluster. This implies a bimodal hydrodynamic solution which leads to a
reduced mass deposition rate into the ISM, with a much reduced outflow
velocity. Furthermore, to match the observed parameters of the HII region
associated to M82-A1, the resultant star cluster wind is here shown to ought to
be confined by a high pressure interstellar medium. The cluster wind
parameters, as well as the location of the reverse shock, its cooling length
and the radius of the standing outer HII region are derived analytically. All
of these properties are then confirmed with a semi-analytical integration of
the flow equations, which provides us also with the run of the hydrodynamic
variables as a function of radius. The impact of the results is discussed and
extended to other massive and young superstar clusters surrounded by a compact
HII region.
| astro-ph | the observed parameters of the young superstar cluster m82a1 and its associated compact hii region are here shown to indicate a low heating efficiency or immediate loss through radiative cooling of a large fraction of the energy inserted by stellar winds and supernovae during the early evolution of the cluster this implies a bimodal hydrodynamic solution which leads to a reduced mass deposition rate into the ism with a much reduced outflow velocity furthermore to match the observed parameters of the hii region associated to m82a1 the resultant star cluster wind is here shown to ought to be confined by a high pressure interstellar medium the cluster wind parameters as well as the location of the reverse shock its cooling length and the radius of the standing outer hii region are derived analytically all of these properties are then confirmed with a semianalytical integration of the flow equations which provides us also with the run of the hydrodynamic variables as a function of radius the impact of the results is discussed and extended to other massive and young superstar clusters surrounded by a compact hii region | [['the', 'observed', 'parameters', 'of', 'the', 'young', 'superstar', 'cluster', 'm82a1', 'and', 'its', 'associated', 'compact', 'hii', 'region', 'are', 'here', 'shown', 'to', 'indicate', 'a', 'low', 'heating', 'efficiency', 'or', 'immediate', 'loss', 'through', 'radiative', 'cooling', 'of', 'a', 'large', 'fraction', 'of', 'the', 'energy', 'inserted', 'by', 'stellar', 'winds', 'and', 'supernovae', 'during', 'the', 'early', 'evolution', 'of', 'the', 'cluster', 'this', 'implies', 'a', 'bimodal', 'hydrodynamic', 'solution', 'which', 'leads', 'to', 'a', 'reduced', 'mass', 'deposition', 'rate', 'into', 'the', 'ism', 'with', 'a', 'much', 'reduced', 'outflow', 'velocity', 'furthermore', 'to', 'match', 'the', 'observed', 'parameters', 'of', 'the', 'hii', 'region', 'associated', 'to', 'm82a1', 'the', 'resultant', 'star', 'cluster', 'wind', 'is', 'here', 'shown', 'to', 'ought', 'to', 'be', 'confined', 'by', 'a', 'high', 'pressure', 'interstellar', 'medium', 'the', 'cluster', 'wind', 'parameters', 'as', 'well', 'as', 'the', 'location', 'of', 'the', 'reverse', 'shock', 'its', 'cooling', 'length', 'and', 'the', 'radius', 'of', 'the', 'standing', 'outer', 'hii', 'region', 'are', 'derived', 'analytically', 'all', 'of', 'these', 'properties', 'are', 'then', 'confirmed', 'with', 'a', 'semianalytical', 'integration', 'of', 'the', 'flow', 'equations', 'which', 'provides', 'us', 'also', 'with', 'the', 'run', 'of', 'the', 'hydrodynamic', 'variables', 'as', 'a', 'function', 'of', 'radius', 'the', 'impact', 'of', 'the', 'results', 'is', 'discussed', 'and', 'extended', 'to', 'other', 'massive', 'and', 'young', 'superstar', 'clusters', 'surrounded', 'by', 'a', 'compact', 'hii', 'region']] | [-0.07434527421124801, 0.12070939271780913, -0.06004610231586842, 0.06885116226953625, -0.08211773489001056, -0.032970689915581254, 0.05394482667249958, 0.38308621461312936, -0.23379706885785825, -0.32173088410248357, 0.0839352004733237, -0.22246683505801884, -0.029413903348638568, 0.20184223438858465, 0.0009641880575947399, -0.02060557098530974, 0.06452036778047, -0.005409523263894101, -0.04647477252517767, -0.22967570620058206, 0.31590504922793916, 0.12574473493081587, 0.16561429807665928, 0.016389495089790353, 0.08926981726069233, -0.13247945550353496, -0.037327357177292145, 0.03540632579230293, -0.160407248954539, 0.07404158934881981, 0.17585096150256133, 0.11190930396438606, 0.2398080880032672, -0.4006335539906035, -0.2677841113269409, 0.039988703615162324, 0.22035175676317384, 0.04484975975512537, -0.07251022366546495, -0.2634053272044947, 0.06708789644362305, -0.21857358883785946, -0.21599587333959439, 0.0679241014839781, 0.0353612150115672, 0.0715591289436004, -0.27156962447309047, 0.1339621058017734, 0.009378745053489242, 0.002530219095949364, -0.09233577772899862, -0.07407451867734918, -0.09836549317759652, 0.10605265158328718, 0.022716074670668565, 0.05721743421889441, 0.20446775389474728, -0.16048050005400744, 6.839554125983869e-05, 0.3933049215239182, -0.028470763806453955, -0.0840690122937323, 0.24410290232113493, -0.21133600592222665, -0.07632899982604369, 0.1824680210506764, 0.14991562486305754, 0.10821214345063493, -0.14947328862724124, 0.005886356356166934, -0.018767814899253988, 0.15943873860067137, 0.044320892279727325, 0.04596287846034493, 0.2659278898775297, 0.13901325749854246, 0.022146275652552484, 0.1790065227088303, -0.15589834452088502, -0.08206944350874232, -0.2574322705798011, -0.12895750717988477, -0.12809407535091705, 0.03877452824024424, -0.1463345954045547, -0.16252693076842084, 0.3243563310418438, 0.075033784243128, 0.2205023202514376, -0.0007248295850360826, 0.27929225345943326, 0.12144276240129545, 0.09668618944718912, 0.14664150101147713, 0.2750365237745466, 0.20177882857888596, 0.07524438011297276, -0.2948223719578637, 0.0753806699944772, 0.03864429761800835] |
707.2772 | Bures metric over thermal state manifolds and quantum criticality | We analyze the Bures metric over the manifold of thermal density matrices for
systems featuring a zero temperature quantum phase transition. We show that the
quantum critical region can be characterized in terms of the temperature
scaling behavior of the metric tensor itself. Furthermore, the analysis of the
metric tensor when both temperature and an external field are varied, allows to
complement the understanding of the phase diagram including cross-over regions
which are not characterized by any singular behavior. These results provide a
further extension of the scope of the metric approach to quantum criticality.
| quant-ph | we analyze the bures metric over the manifold of thermal density matrices for systems featuring a zero temperature quantum phase transition we show that the quantum critical region can be characterized in terms of the temperature scaling behavior of the metric tensor itself furthermore the analysis of the metric tensor when both temperature and an external field are varied allows to complement the understanding of the phase diagram including crossover regions which are not characterized by any singular behavior these results provide a further extension of the scope of the metric approach to quantum criticality | [['we', 'analyze', 'the', 'bures', 'metric', 'over', 'the', 'manifold', 'of', 'thermal', 'density', 'matrices', 'for', 'systems', 'featuring', 'a', 'zero', 'temperature', 'quantum', 'phase', 'transition', 'we', 'show', 'that', 'the', 'quantum', 'critical', 'region', 'can', 'be', 'characterized', 'in', 'terms', 'of', 'the', 'temperature', 'scaling', 'behavior', 'of', 'the', 'metric', 'tensor', 'itself', 'furthermore', 'the', 'analysis', 'of', 'the', 'metric', 'tensor', 'when', 'both', 'temperature', 'and', 'an', 'external', 'field', 'are', 'varied', 'allows', 'to', 'complement', 'the', 'understanding', 'of', 'the', 'phase', 'diagram', 'including', 'crossover', 'regions', 'which', 'are', 'not', 'characterized', 'by', 'any', 'singular', 'behavior', 'these', 'results', 'provide', 'a', 'further', 'extension', 'of', 'the', 'scope', 'of', 'the', 'metric', 'approach', 'to', 'quantum', 'criticality']] | [-0.16107148603095037, 0.1737084279438836, -0.11422109184296507, 0.022986973572130268, -0.030189209254948716, -0.11647904042742754, 0.04859488059178387, 0.32508368033327556, -0.2550981215446403, -0.25354556448169446, 0.0994730630043992, -0.27906359492718413, -0.19806338203580756, 0.17884626278751775, -0.005309036874371629, 0.035560184952459835, -0.0216130287435494, 0.08244020411236162, -0.133225754065145, -0.1926780026222236, 0.3852583171162558, 0.04011000192013422, 0.3126116969181519, 0.09856923038237973, 0.05829700302626742, -0.043579317026428484, 0.03613913508720304, 0.11007987258367632, -0.13507833243386, 0.04424296369482028, 0.2480241716434983, 0.09723565778449962, 0.19136539249471082, -0.3601506611724433, -0.24990376111512122, 0.1268851032358055, 0.11979929603832333, 0.08399420940733858, 0.0017695724081836248, -0.31814124042070224, 0.0743705998370914, -0.16267319812782502, -0.14450119204427067, -0.14505729640000745, -0.03596787912844631, -0.03415969802850955, -0.23806706443919162, 0.06183835974355277, 0.07959559506393576, 0.06885298047410815, -0.07747820370744815, -0.07095180011697505, 0.009400995982516753, 0.14125733206348837, 0.020119094995683744, 0.033690590984923274, 0.1657626901753247, -0.14776272512972355, -0.08774399172612711, 0.33709524446657224, -0.0827099870743328, -0.17428653938205618, 0.16887761868144335, -0.1748814031481743, -0.0571693550011045, 0.10636727813827364, 0.14306897718067232, 0.10244356143337331, -0.12013399808646155, 0.1286131958471072, 0.03880732911761458, 0.14727803108184354, 0.005715652721885004, 0.0677565371078488, 0.21067435547317329, 0.12341286893688927, 0.07052385184521738, 0.1949387406452412, -0.06677795993470538, -0.1713477232885596, -0.310531835275163, -0.18414635483242914, -0.18920056929713802, 0.054182636263737406, -0.19027014472567794, -0.22139287143945693, 0.4174338555012487, 0.1423281037248671, 0.22545911209094094, 0.043911502812989056, 0.24324561453081275, 0.14074706413636082, 0.026106837646741616, 0.07479453806912428, 0.24837906779231209, 0.16272981672939893, 0.0957456905921725, -0.2327505279173094, 0.04080655088550166, 0.06866074911514787] |
707.2773 | The dynamical hole in ultrafast photoassociation: analysis of the
compression effect | Photoassociation of a pair of cooled atoms by excitation with a short chirped
laser pulse creates a dynamical hole in the initial continuum wavefunction.
This hole is manifested by a void in the pair wavefunction and a momentum kick.
Photoassociation into loosely bound levels of the external well in Cs_2
0$_g^-$(6S + 6P$_{3/2}$ is considered as a case study. After the pulse, the
free evolution of the ground triplet state wavepacket is analyzed. Due to a
negative momentum kick, motion to small distances is manifested and a
compression effect is pointed out, markedly increasing the density of atom
pairs at short distance. A consequence of the hole is the redistribution of the
vibrational population in the ground triplet state, with population of the last
bound level and creation of pairs of hot atoms. The physical interpretation
makes use of the time dependence of the probability current and population on
each channel to understand the role of the parameters of the photoassociation
pulse. By varying such parameters, optimization of the compression effect in
the ground state wavepacket is demonstrated. Due to an increase of the short
range density probability by more than two orders of magnitude, we predict
important photoassociation rates into deeply bound levels of the excited state
by a second pulse, red-detuned relative to the first one and conveniently
delayed.
| quant-ph | photoassociation of a pair of cooled atoms by excitation with a short chirped laser pulse creates a dynamical hole in the initial continuum wavefunction this hole is manifested by a void in the pair wavefunction and a momentum kick photoassociation into loosely bound levels of the external well in cs_2 0_g6s 6p_32 is considered as a case study after the pulse the free evolution of the ground triplet state wavepacket is analyzed due to a negative momentum kick motion to small distances is manifested and a compression effect is pointed out markedly increasing the density of atom pairs at short distance a consequence of the hole is the redistribution of the vibrational population in the ground triplet state with population of the last bound level and creation of pairs of hot atoms the physical interpretation makes use of the time dependence of the probability current and population on each channel to understand the role of the parameters of the photoassociation pulse by varying such parameters optimization of the compression effect in the ground state wavepacket is demonstrated due to an increase of the short range density probability by more than two orders of magnitude we predict important photoassociation rates into deeply bound levels of the excited state by a second pulse reddetuned relative to the first one and conveniently delayed | [['photoassociation', 'of', 'a', 'pair', 'of', 'cooled', 'atoms', 'by', 'excitation', 'with', 'a', 'short', 'chirped', 'laser', 'pulse', 'creates', 'a', 'dynamical', 'hole', 'in', 'the', 'initial', 'continuum', 'wavefunction', 'this', 'hole', 'is', 'manifested', 'by', 'a', 'void', 'in', 'the', 'pair', 'wavefunction', 'and', 'a', 'momentum', 'kick', 'photoassociation', 'into', 'loosely', 'bound', 'levels', 'of', 'the', 'external', 'well', 'in', 'cs_2', '0_g6s', '6p_32', 'is', 'considered', 'as', 'a', 'case', 'study', 'after', 'the', 'pulse', 'the', 'free', 'evolution', 'of', 'the', 'ground', 'triplet', 'state', 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'demonstrated', 'due', 'to', 'an', 'increase', 'of', 'the', 'short', 'range', 'density', 'probability', 'by', 'more', 'than', 'two', 'orders', 'of', 'magnitude', 'we', 'predict', 'important', 'photoassociation', 'rates', 'into', 'deeply', 'bound', 'levels', 'of', 'the', 'excited', 'state', 'by', 'a', 'second', 'pulse', 'reddetuned', 'relative', 'to', 'the', 'first', 'one', 'and', 'conveniently', 'delayed']] | [-0.1406314225253951, 0.20592731655078045, -0.07052960639317694, 0.07134132252368341, 0.01304405967207396, -0.09407099775946592, 0.07850745034757066, 0.37558096895189996, -0.24654133804992998, -0.299035685294261, 0.010480680334441295, -0.2485593881534591, -0.017719468501604857, 0.1554682798147814, 0.021717076476867478, 0.011367838138705927, 0.07184729884808126, 0.051321315736463084, -0.03467614827868975, -0.20420127024780535, 0.34486228704758704, 0.08355776434679214, 0.27783719069201107, 0.06221678230452211, 0.1056525734206449, 0.018822409495388128, 0.05081549273871872, 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707.2774 | Mesoscopic model for the fluctuating hydrodynamics of binary and ternary
mixtures | A recently introduced particle-based model for fluid dynamics with continuous
velocities is generalized to model immiscible binary mixtures. Excluded volume
interactions between the two components are modeled by stochastic multiparticle
collisions which depend on the local velocities and densities. Momentum and
energy are conserved locally, and entropically driven phase separation occurs
for high collision rates. An explicit expression for the equation of state is
derived, and the concentration dependence of the bulk free energy is shown to
be the same as that of the Widom-Rowlinson model. Analytic results for the
phase diagram are in excellent agreement with simulation data. Results for the
line tension obtained from the analysis of the capillary wave spectrum of a
droplet agree with measurements based on the Laplace's equation. The
introduction of "amphiphilic" dimers makes it possible to model the phase
behavior and dynamics of ternary surfactant mixtures.
| cond-mat.soft cond-mat.stat-mech | a recently introduced particlebased model for fluid dynamics with continuous velocities is generalized to model immiscible binary mixtures excluded volume interactions between the two components are modeled by stochastic multiparticle collisions which depend on the local velocities and densities momentum and energy are conserved locally and entropically driven phase separation occurs for high collision rates an explicit expression for the equation of state is derived and the concentration dependence of the bulk free energy is shown to be the same as that of the widomrowlinson model analytic results for the phase diagram are in excellent agreement with simulation data results for the line tension obtained from the analysis of the capillary wave spectrum of a droplet agree with measurements based on the laplaces equation the introduction of amphiphilic dimers makes it possible to model the phase behavior and dynamics of ternary surfactant mixtures | [['a', 'recently', 'introduced', 'particlebased', 'model', 'for', 'fluid', 'dynamics', 'with', 'continuous', 'velocities', 'is', 'generalized', 'to', 'model', 'immiscible', 'binary', 'mixtures', 'excluded', 'volume', 'interactions', 'between', 'the', 'two', 'components', 'are', 'modeled', 'by', 'stochastic', 'multiparticle', 'collisions', 'which', 'depend', 'on', 'the', 'local', 'velocities', 'and', 'densities', 'momentum', 'and', 'energy', 'are', 'conserved', 'locally', 'and', 'entropically', 'driven', 'phase', 'separation', 'occurs', 'for', 'high', 'collision', 'rates', 'an', 'explicit', 'expression', 'for', 'the', 'equation', 'of', 'state', 'is', 'derived', 'and', 'the', 'concentration', 'dependence', 'of', 'the', 'bulk', 'free', 'energy', 'is', 'shown', 'to', 'be', 'the', 'same', 'as', 'that', 'of', 'the', 'widomrowlinson', 'model', 'analytic', 'results', 'for', 'the', 'phase', 'diagram', 'are', 'in', 'excellent', 'agreement', 'with', 'simulation', 'data', 'results', 'for', 'the', 'line', 'tension', 'obtained', 'from', 'the', 'analysis', 'of', 'the', 'capillary', 'wave', 'spectrum', 'of', 'a', 'droplet', 'agree', 'with', 'measurements', 'based', 'on', 'the', 'laplaces', 'equation', 'the', 'introduction', 'of', 'amphiphilic', 'dimers', 'makes', 'it', 'possible', 'to', 'model', 'the', 'phase', 'behavior', 'and', 'dynamics', 'of', 'ternary', 'surfactant', 'mixtures']] | [-0.12251685485748535, 0.17779504224241605, -0.10439141195835676, 0.03996247800728111, -0.020694600659181606, -0.127947943428388, -0.007802464836439886, 0.34318070069372236, -0.2330545804925732, -0.2879416790198196, 0.06228915442325097, -0.2912628008150398, -0.09622140589391591, 0.17769934014267438, 0.04465285412498288, 0.06297354958625836, 0.0600051521470158, 0.015662108945263015, -0.06204633168441445, -0.17560588181591952, 0.2958196948601545, 0.06759251397790166, 0.29549303053637277, 0.06734531094365707, 0.13275590771402174, -0.009460959319754705, 0.0011107424905823244, 0.04324801823358748, -0.2004606748487531, 0.07571082634031545, 0.2085176150988579, 0.006294117281473913, 0.15011485607421898, -0.4220929420781094, -0.2540219206740702, 0.08101526174980861, 0.1130861571102185, 0.13734298324378508, -0.06137618452466868, -0.2716806446083242, 0.008591211869843773, -0.17646448846932475, -0.1486019427046323, -0.06131712226946089, 0.023043393020654893, 0.09525369784560289, -0.27876434052506316, 0.18804186111531004, 0.03354645521914052, 0.03638960348793885, -0.1264710985411079, -0.11719399619476309, -0.09745114809879056, 0.0858760800381953, 0.03444133348554581, 0.009142300703439054, 0.13584122888522443, -0.12752023710905072, -0.044103962844693576, 0.38089292209556364, -0.06272588476499581, -0.22145134839717742, 0.23223655658507056, -0.11320581680352611, -0.07609743485715684, 0.20179622002121816, 0.14890460385387386, 0.09632705491674426, -0.15869622334342945, 0.04690862714982155, -0.01536378244878773, 0.1797183632876698, 0.05810462115202229, -0.028203928986878925, 0.19969315029732831, 0.17004919836258556, -0.0057690996507046765, 0.1367216296677178, -0.0760096944591773, -0.20400673463017438, -0.2880520252185268, -0.15242025628034678, -0.20270806125860166, -0.026978773472466754, -0.100817975691838, -0.16857518939609914, 0.3221015615414802, 0.08703742650503592, 0.2094026772057885, 0.0527658743752896, 0.26234034668178774, 0.12341620813293214, 0.0008050658315960709, 0.036492444579717474, 0.2390664105036563, 0.17208162190268872, 0.0901367895246542, -0.2550515394749029, 0.0788757219825956, 0.09841742607198291] |
707.2775 | Uniqueness theorem for 5-dimensional black holes with two axial Killing
fields | We show that two stationary, asymptotically flat vacuum black holes in 5
dimensions with two commuting axial symmetries are identical if and only if
their masses, angular momenta, and their ``rod structures'' coincide. We also
show that the horizon must be topologically either a 3-sphere, a ring, or a
Lens-space. Our argument is a generalization of constructions of Morisawa and
Ida (based in turn on key work of Maison) who considered the spherical case,
combined with basic arguments concerning the nature of the factor manifold of
symmetry orbits.
| gr-qc | we show that two stationary asymptotically flat vacuum black holes in 5 dimensions with two commuting axial symmetries are identical if and only if their masses angular momenta and their rod structures coincide we also show that the horizon must be topologically either a 3sphere a ring or a lensspace our argument is a generalization of constructions of morisawa and ida based in turn on key work of maison who considered the spherical case combined with basic arguments concerning the nature of the factor manifold of symmetry orbits | [['we', 'show', 'that', 'two', 'stationary', 'asymptotically', 'flat', 'vacuum', 'black', 'holes', 'in', '5', 'dimensions', 'with', 'two', 'commuting', 'axial', 'symmetries', 'are', 'identical', 'if', 'and', 'only', 'if', 'their', 'masses', 'angular', 'momenta', 'and', 'their', 'rod', 'structures', 'coincide', 'we', 'also', 'show', 'that', 'the', 'horizon', 'must', 'be', 'topologically', 'either', 'a', '3sphere', 'a', 'ring', 'or', 'a', 'lensspace', 'our', 'argument', 'is', 'a', 'generalization', 'of', 'constructions', 'of', 'morisawa', 'and', 'ida', 'based', 'in', 'turn', 'on', 'key', 'work', 'of', 'maison', 'who', 'considered', 'the', 'spherical', 'case', 'combined', 'with', 'basic', 'arguments', 'concerning', 'the', 'nature', 'of', 'the', 'factor', 'manifold', 'of', 'symmetry', 'orbits']] | [-0.18317099647639795, 0.14917878951704086, -0.09353785690050138, 0.0639548334793924, -0.07591304166762289, -0.1676920716120147, 0.0125551717491214, 0.37092012797244067, -0.18182072682890954, -0.26257002529509493, 0.12338306180331422, -0.2589356645557293, -0.13953767060762445, 0.15946115315675216, -0.08063644600211815, 0.00024185322095141856, 0.04224284770248761, 0.051481548668329366, -0.08510851029436602, -0.2592618725449388, 0.3893176440994234, 0.017668835921646205, 0.23788295360282063, 0.01166818515386779, 0.09540956913017083, -0.0075910163956672645, 0.007560356878837961, 0.06609870263830174, -0.1450392884741399, 0.0957378773776771, 0.16628854529022477, 0.049309684737953684, 0.18642193275817864, -0.41650068900699533, -0.144173915427568, 0.10772371610496627, 0.15938996058092778, 0.10306774039832647, -0.05193026437624466, -0.25239138766246044, 0.0954352087601153, -0.1751605994392966, -0.19733410938318038, -0.05864814708962343, 0.02980565160599559, -0.005049668848081384, -0.2128182417756423, 0.06388987058219987, 0.1513932886598415, 0.006091930037993819, -0.08135898085514105, -0.0835727309418279, -0.08554368308842789, 0.08247904135943065, 0.10056616070404173, -0.005168859825231308, 0.12863198440077953, -0.05214816612343109, -0.1491173182852393, 0.3601155902887153, -0.004448154778761226, -0.2616537405221268, 0.1859495604307889, -0.1834443315950244, -0.1303524250586972, 0.09936888699641798, 0.11962333549528795, 0.1586629836332746, -0.08552380444395334, 0.11780885713605405, -0.08563601112989493, 0.15546572399000788, 0.14490325548036329, 0.041451090908890896, 0.26666830365307803, 0.05584979839189801, 0.06239673150818373, 0.08362734954408911, -0.004385698426969696, -0.09901565982591967, -0.32216637624904165, -0.1600915191012846, -0.16565854441331224, 0.11487173912830131, -0.11062100739167532, -0.1526192983309197, 0.3458783101766955, 0.058714257174193166, 0.21536854175894066, 0.05775434938584303, 0.25844044263460597, 0.03851058029131098, 0.05725345074004212, 0.13332865784096337, 0.25659581814177856, 0.1395681067586465, 0.025418737513381383, -0.16785861440084138, -0.06392315473559118, 0.10428517496993028] |
707.2776 | A presentation for the mapping class group of a non-orientable surface
from the action on the complex of curves | We study the action of the mapping class group M(F) on the complex of curves
of a non-orientable surface F. We obtain, by using a result of K. S. Brown, a
presentation for M(F) defined in terms of the mapping class groups of the
complementary surfaces of collections of curves, provided that F is not
sporadic, i.e. the complex of curves of F is simply connected. We also compute
a finite presentation for the mapping class group of each sporadic surface.
| math.GT | we study the action of the mapping class group mf on the complex of curves of a nonorientable surface f we obtain by using a result of k s brown a presentation for mf defined in terms of the mapping class groups of the complementary surfaces of collections of curves provided that f is not sporadic ie the complex of curves of f is simply connected we also compute a finite presentation for the mapping class group of each sporadic surface | [['we', 'study', 'the', 'action', 'of', 'the', 'mapping', 'class', 'group', 'mf', 'on', 'the', 'complex', 'of', 'curves', 'of', 'a', 'nonorientable', 'surface', 'f', 'we', 'obtain', 'by', 'using', 'a', 'result', 'of', 'k', 's', 'brown', 'a', 'presentation', 'for', 'mf', 'defined', 'in', 'terms', 'of', 'the', 'mapping', 'class', 'groups', 'of', 'the', 'complementary', 'surfaces', 'of', 'collections', 'of', 'curves', 'provided', 'that', 'f', 'is', 'not', 'sporadic', 'ie', 'the', 'complex', 'of', 'curves', 'of', 'f', 'is', 'simply', 'connected', 'we', 'also', 'compute', 'a', 'finite', 'presentation', 'for', 'the', 'mapping', 'class', 'group', 'of', 'each', 'sporadic', 'surface']] | [-0.20786469169880872, 0.08444761399777583, -0.09247804214648994, 0.03820887556656, -0.08283353695806897, -0.102555607388049, 0.07479351167969497, 0.36544459800661344, -0.2551212341145233, -0.2605263422484751, 0.0887198442561598, -0.22682556974483126, -0.1831784177640522, 0.28327967628353723, -0.08440326572608571, -0.046940277296083945, 0.02731318929359133, 0.08052940460289885, -0.11146793670572892, -0.2662293949842821, 0.39588429401686165, -0.08280376849098155, 0.17617913298768761, 0.00928954757106157, 0.08697402205916098, 0.02842098070929448, -0.06499692868947247, 0.05122268542555379, -0.1302021497744315, 0.16736608887390222, 0.256973453886508, 0.09972299986668391, 0.17961100814001704, -0.32740255790176215, -0.24636548854134702, 0.16881512969525325, 0.06470265087706072, 7.681548595428467e-06, -0.04523323511526586, -0.2434407705096183, 0.13615902007361988, -0.15031457131291615, -0.1339222346432507, -0.01848210691600854, 0.05601973095793783, 0.06295216724816939, -0.20167101418921424, -0.011774563176318842, 0.10029935724113459, 0.14815542775631688, -0.05227900448220747, -0.0622215004419379, -0.03819378792526729, 0.1655731716417466, -0.010056467916540525, 0.07433301206666654, 0.09076124115237667, -0.13782168361990724, -0.049431324223585336, 0.4007395120671042, -0.11928645182216976, -0.17108090955442118, 0.19670848635795676, -0.17966742857853757, -0.1425899493013635, 0.16493160277605057, 0.14845385992709823, 0.20261226930184129, -0.0997060361939172, 0.16417199596302745, -0.12144814961716349, 0.10213529428950062, 0.022256053823195857, -0.049733145938565336, 0.15888788220242678, 0.10512901900837739, 0.09804623032471647, 0.13313979888191146, -0.046109106141590965, 0.03370510731007398, -0.35295856679663246, -0.2252147386747378, -0.1721332622691989, 0.08846919928166447, -0.04876771603745443, -0.20488222472565135, 0.4573492693979247, -0.00975724259092484, 0.21002219031553393, 0.10135635154114829, 0.18651735520473234, 0.08582611255531694, 0.06152615721486969, 0.0698280260944164, 0.07129810422796894, 0.16897287861628021, -0.08542722698737994, -0.1874378564089169, 0.0001637549484493556, 0.1565901316690868] |
707.2777 | Suppression of hole-mediated ferromagnetism in GaMnP by hydrogen | We report the successful passivation of the Mn acceptors in GaMnP upon
exposure to a remote dc hydrogen plasma. The as-grown films are non-metallic
and ferromagnetic with a Curie temperature of T_C=55K. After hydrogenation the
sample resistivity increases by approximately three orders of magnitude at room
temperature and six orders of magnitude at 25 K. Furthermore, the hydrogenated
samples are paramagnetic, which is evidenced by a magnetization curve at 5 K
that is best described by a Brillouin function with g=2 and J=5/2 expected for
Mn atoms in the 3d^5 configuration. These observations unambiguously proof that
the ferromagnetism is carrier-mediated also in GaMnP.
| cond-mat.mtrl-sci | we report the successful passivation of the mn acceptors in gamnp upon exposure to a remote dc hydrogen plasma the asgrown films are nonmetallic and ferromagnetic with a curie temperature of t_c55k after hydrogenation the sample resistivity increases by approximately three orders of magnitude at room temperature and six orders of magnitude at 25 k furthermore the hydrogenated samples are paramagnetic which is evidenced by a magnetization curve at 5 k that is best described by a brillouin function with g2 and j52 expected for mn atoms in the 3d5 configuration these observations unambiguously proof that the ferromagnetism is carriermediated also in gamnp | [['we', 'report', 'the', 'successful', 'passivation', 'of', 'the', 'mn', 'acceptors', 'in', 'gamnp', 'upon', 'exposure', 'to', 'a', 'remote', 'dc', 'hydrogen', 'plasma', 'the', 'asgrown', 'films', 'are', 'nonmetallic', 'and', 'ferromagnetic', 'with', 'a', 'curie', 'temperature', 'of', 't_c55k', 'after', 'hydrogenation', 'the', 'sample', 'resistivity', 'increases', 'by', 'approximately', 'three', 'orders', 'of', 'magnitude', 'at', 'room', 'temperature', 'and', 'six', 'orders', 'of', 'magnitude', 'at', '25', 'k', 'furthermore', 'the', 'hydrogenated', 'samples', 'are', 'paramagnetic', 'which', 'is', 'evidenced', 'by', 'a', 'magnetization', 'curve', 'at', '5', 'k', 'that', 'is', 'best', 'described', 'by', 'a', 'brillouin', 'function', 'with', 'g2', 'and', 'j52', 'expected', 'for', 'mn', 'atoms', 'in', 'the', '3d5', 'configuration', 'these', 'observations', 'unambiguously', 'proof', 'that', 'the', 'ferromagnetism', 'is', 'carriermediated', 'also', 'in', 'gamnp']] | [-0.10894254031054694, 0.2211904362238962, 0.03494552506006086, -0.04852651095807589, 0.04600330840284918, -0.13005234786838876, 0.14191366254817694, 0.4428870475978828, -0.21065164553275442, -0.35196011221291973, 0.0164204724190081, -0.36914225514320764, -0.025409296278239173, 0.1635831177700311, 0.06860168201520163, -0.034263049719133874, -0.04505116698176911, -0.03701067293135851, -0.10881911731763359, -0.3116227338768487, 0.2449731266596263, 0.022718093129714914, 0.27086173523874846, 0.10513216635102735, 0.036810932046386836, -0.017720775349195774, 0.1458167599368037, 0.04058316674005861, -0.12308519893193472, 0.014646827099461327, 0.29340296094397117, -0.09376774172472092, 0.17276354250498116, -0.40390090836979864, -0.1740785756938196, -0.02436789397296368, 0.0942953292362611, 0.11652009512352593, -0.03959813843682116, -0.23424877270179637, 0.08195507383788936, -0.08217017157185896, -0.12206061104285147, -0.06298511296364606, 0.009901199444178856, -0.04131153503348126, -0.25490452628696847, 0.10173691008165799, 0.08337432590733264, 0.13461881676031387, -0.11057746310389656, -0.19218399760988997, -0.08741342374945388, -0.014933928892965995, 0.03560927266702421, 0.08146563863527834, 0.21261024438118672, -0.044752394543120674, -0.10669329650152255, 0.31695398547704895, -0.09022772374252479, 0.03789215210103886, 0.14666638055396283, -0.22753970036922277, -0.06553933319924445, 0.23681876571922034, 0.036140335860716945, 0.12802660577090494, -0.16130166981990138, 0.07099936457698099, 0.008035205405059398, 0.2049913430659502, 0.10289761403977286, 0.0190739684815829, 0.21977787983475947, 0.19576821131083896, 0.0680292306887899, 0.13126970403919033, -0.12616938493652818, 0.03406882846691445, -0.20389376523534714, -0.19678220301683919, -0.2200714800251173, 0.09364576382544257, -0.12231719282905995, -0.11293196635704268, 0.3747387695874946, 0.12219768470408869, 0.17677788492109553, -0.04846314258540195, 0.265606824787991, 0.07412042786531589, 0.08345996832027666, 0.03916425212496417, 0.2491617007591926, 0.17452908547563187, 0.13360705896433073, -0.2725894934242116, 0.1325998727104389, -0.004151507191172819] |
707.2778 | Spitzer Transit and Secondary Eclipse Photometry of GJ 436b | We report the results of infrared (8 micron) transit and secondary eclipse
photometry of the hot Neptune exoplanet, GJ436b using Spitzer. The nearly
photon-limited precision of these data allow us to measure an improved radius
for the planet, and to detect the secondary eclipse. The transit (centered at
HJD = 2454280.78149 +/-0.00016) shows the flat-bottomed shape typical of
infrared transits, and it precisely defines the planet-to-star radius ratio
(0.0839 +/-0.0005), independent of the stellar properties. However, we obtain
the planetary radius, as well as the stellar mass and radius, by fitting to the
transit curve simultaneously with an empirical mass-radius relation for
M-dwarfs (M=R). We find Rs=Ms=0.47 +/-0.02 in solar units, and Rp=27,600
+/-1170 km (4.33 +/-0.18 Earth radii). This radius significantly exceeds the
radius of a naked ocean planet, and requires a gasesous hydrogen-helium
envelope. The secondary eclipse occurs at phase 0.587 +/-0.005, proving a
significant orbital eccentricity (e=0.15 +/-0.012). The amplitude of the
eclipse (5.7 +/-0.8e-4) indicates a brightness temperature for the planet of
T=712 +/-36K. If this is indicative of the planet's physical temperature, it
suggests the occurrence of tidal heating in the planet. An uncharacterized
second planet likely provides ongoing gravitational perturbations, to maintain
GJ436b's orbit eccentricity over long time scales.
| astro-ph | we report the results of infrared 8 micron transit and secondary eclipse photometry of the hot neptune exoplanet gj436b using spitzer the nearly photonlimited precision of these data allow us to measure an improved radius for the planet and to detect the secondary eclipse the transit centered at hjd 245428078149 000016 shows the flatbottomed shape typical of infrared transits and it precisely defines the planettostar radius ratio 00839 00005 independent of the stellar properties however we obtain the planetary radius as well as the stellar mass and radius by fitting to the transit curve simultaneously with an empirical massradius relation for mdwarfs mr we find rsms047 002 in solar units and rp27600 1170 km 433 018 earth radii this radius significantly exceeds the radius of a naked ocean planet and requires a gasesous hydrogenhelium envelope the secondary eclipse occurs at phase 0587 0005 proving a significant orbital eccentricity e015 0012 the amplitude of the eclipse 57 08e4 indicates a brightness temperature for the planet of t712 36k if this is indicative of the planets physical temperature it suggests the occurrence of tidal heating in the planet an uncharacterized second planet likely provides ongoing gravitational perturbations to maintain gj436bs orbit eccentricity over long time scales | [['we', 'report', 'the', 'results', 'of', 'infrared', '8', 'micron', 'transit', 'and', 'secondary', 'eclipse', 'photometry', 'of', 'the', 'hot', 'neptune', 'exoplanet', 'gj436b', 'using', 'spitzer', 'the', 'nearly', 'photonlimited', 'precision', 'of', 'these', 'data', 'allow', 'us', 'to', 'measure', 'an', 'improved', 'radius', 'for', 'the', 'planet', 'and', 'to', 'detect', 'the', 'secondary', 'eclipse', 'the', 'transit', 'centered', 'at', 'hjd', '245428078149', '000016', 'shows', 'the', 'flatbottomed', 'shape', 'typical', 'of', 'infrared', 'transits', 'and', 'it', 'precisely', 'defines', 'the', 'planettostar', 'radius', 'ratio', '00839', '00005', 'independent', 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707.2779 | Independent Noise Approximation for Spin-Boson Decoherence | Quantum error correction is a solution to preserve the fidelity of quantum
information encoded in physical systems subject to noise. However, unfavorable
correlated errors could be induced even for non-interacting qubits through the
environment (bath), when they are "packed" together. The question is, to what
extent can we treat the noise induced by the bath as independent? In the
context of the spin-boson model, we show that, under some reasonable
constraints, the independent noise approximation could be valid. On the other
hand, in the strongly correlated limit, we show how the method of decoherence
free subspace can be made applicable. Combining these two methods makes
fault-tolerant quantum computation promising in fighting against correlated
errors.
| quant-ph | quantum error correction is a solution to preserve the fidelity of quantum information encoded in physical systems subject to noise however unfavorable correlated errors could be induced even for noninteracting qubits through the environment bath when they are packed together the question is to what extent can we treat the noise induced by the bath as independent in the context of the spinboson model we show that under some reasonable constraints the independent noise approximation could be valid on the other hand in the strongly correlated limit we show how the method of decoherence free subspace can be made applicable combining these two methods makes faulttolerant quantum computation promising in fighting against correlated errors | [['quantum', 'error', 'correction', 'is', 'a', 'solution', 'to', 'preserve', 'the', 'fidelity', 'of', 'quantum', 'information', 'encoded', 'in', 'physical', 'systems', 'subject', 'to', 'noise', 'however', 'unfavorable', 'correlated', 'errors', 'could', 'be', 'induced', 'even', 'for', 'noninteracting', 'qubits', 'through', 'the', 'environment', 'bath', 'when', 'they', 'are', 'packed', 'together', 'the', 'question', 'is', 'to', 'what', 'extent', 'can', 'we', 'treat', 'the', 'noise', 'induced', 'by', 'the', 'bath', 'as', 'independent', 'in', 'the', 'context', 'of', 'the', 'spinboson', 'model', 'we', 'show', 'that', 'under', 'some', 'reasonable', 'constraints', 'the', 'independent', 'noise', 'approximation', 'could', 'be', 'valid', 'on', 'the', 'other', 'hand', 'in', 'the', 'strongly', 'correlated', 'limit', 'we', 'show', 'how', 'the', 'method', 'of', 'decoherence', 'free', 'subspace', 'can', 'be', 'made', 'applicable', 'combining', 'these', 'two', 'methods', 'makes', 'faulttolerant', 'quantum', 'computation', 'promising', 'in', 'fighting', 'against', 'correlated', 'errors']] | [-0.13500752799997204, 0.18293070612605988, -0.058457242802863844, 0.11461125937823549, -0.01119093814243873, -0.22462701698225973, 0.04685071075596569, 0.3902144684015136, -0.282048395156795, -0.28004755486587163, 0.10377351886984941, -0.27758347416263923, -0.12727472538602325, 0.2304021103385215, -0.13075284075718005, 0.08153829541416806, 0.08447621910416178, 0.033902926109077636, -0.06370391269528977, -0.2945217214108102, 0.28261201109802514, 0.07106088942607146, 0.2687116657269367, 0.0317047312503411, 0.05292119180146409, -0.009309590287637292, 0.0037994411398182834, 0.061335696671321466, -0.06694085286806895, 0.07143414699627708, 0.2594769410870708, 0.06754020754369935, 0.24698475346361337, -0.45106624481023144, -0.23294269347465352, 0.10051591346845064, 0.15130197312764562, 0.19622499246983544, 0.008368621167743154, -0.30182955550487367, 0.04390635504489438, -0.14917578650720156, -0.09035433990178271, -0.12070027068910892, -0.040863679924146516, -0.013863177180674188, -0.2633849000803342, 0.09780387817718611, 0.07017726527951788, -0.02630033174104858, -0.0023531595371630892, -0.07409631969864693, 0.03461335411115566, 0.16029805469346078, -0.0059717401398525554, 0.01919272914426728, 0.20202069643786863, -0.11875433540952049, -0.09798242757913836, 0.38794229485568377, -0.0839801702603469, -0.27060122175035967, 0.1874261771802578, -0.09614335491910185, -0.14247382646058931, 0.09373542340063866, 0.13362189385378243, 0.05462255860727869, -0.17344152516332606, 0.07861186056030228, 0.029174906806203358, 0.20521293827455098, 0.011922398373778714, 0.13713331029979153, 0.2137383995087523, 0.1275391393247175, 0.08324083247172989, 0.17280765894643163, -0.049236381387648485, -0.14400420402045966, -0.26820043864937726, -0.10691308654566999, -0.21494484427507574, 0.07548811755616937, -0.060916539555284796, -0.12859452945556035, 0.34586261163808796, 0.24350723745240094, 0.1490201981975125, -0.01598244170421375, 0.2968384204595758, 0.12404257242808837, 0.030947678442635948, 0.0692163582629802, 0.23536801161453855, 0.1260458510491605, -0.02071321675586596, -0.25587949289311246, 0.104970673507635, -0.01721420558169484] |
707.278 | On the ergodic sum-rate performance of CDD in multi-user systems | The main focus of space-time coding design and analysis for MIMO systems has
been so far focused on single-user systems. For single-user systems, transmit
diversity schemes suffer a loss in spectral efficiency if the receiver is
equipped with more than one antenna, making them unsuitable for high rate
transmission. One such transmit diversity scheme is the cyclic delay diversity
code (CDD). The advantage of CDD over other diversity schemes such as
orthogonal space-time block codes (OSTBC) is that a code rate of one and delay
optimality are achieved independent of the number of transmit antennas. In this
work we analyze the ergodic rate of a multi-user multiple access channel (MAC)
with each user applying such a cyclic delay diversity (CDD) code. We derive
closed form expressions for the ergodic sum-rate of multi-user CDD and compare
it with the sum-capacity. We study the ergodic rate region and show that in
contrast to what is conventionally known regarding the single-user case,
transmit diversity schemes are viable candidates for high rate transmission in
multi-user systems. Finally, our theoretical findings are illustrated by
numerical simulation results.
| cs.IT math.IT | the main focus of spacetime coding design and analysis for mimo systems has been so far focused on singleuser systems for singleuser systems transmit diversity schemes suffer a loss in spectral efficiency if the receiver is equipped with more than one antenna making them unsuitable for high rate transmission one such transmit diversity scheme is the cyclic delay diversity code cdd the advantage of cdd over other diversity schemes such as orthogonal spacetime block codes ostbc is that a code rate of one and delay optimality are achieved independent of the number of transmit antennas in this work we analyze the ergodic rate of a multiuser multiple access channel mac with each user applying such a cyclic delay diversity cdd code we derive closed form expressions for the ergodic sumrate of multiuser cdd and compare it with the sumcapacity we study the ergodic rate region and show that in contrast to what is conventionally known regarding the singleuser case transmit diversity schemes are viable candidates for high rate transmission in multiuser systems finally our theoretical findings are illustrated by numerical simulation results | [['the', 'main', 'focus', 'of', 'spacetime', 'coding', 'design', 'and', 'analysis', 'for', 'mimo', 'systems', 'has', 'been', 'so', 'far', 'focused', 'on', 'singleuser', 'systems', 'for', 'singleuser', 'systems', 'transmit', 'diversity', 'schemes', 'suffer', 'a', 'loss', 'in', 'spectral', 'efficiency', 'if', 'the', 'receiver', 'is', 'equipped', 'with', 'more', 'than', 'one', 'antenna', 'making', 'them', 'unsuitable', 'for', 'high', 'rate', 'transmission', 'one', 'such', 'transmit', 'diversity', 'scheme', 'is', 'the', 'cyclic', 'delay', 'diversity', 'code', 'cdd', 'the', 'advantage', 'of', 'cdd', 'over', 'other', 'diversity', 'schemes', 'such', 'as', 'orthogonal', 'spacetime', 'block', 'codes', 'ostbc', 'is', 'that', 'a', 'code', 'rate', 'of', 'one', 'and', 'delay', 'optimality', 'are', 'achieved', 'independent', 'of', 'the', 'number', 'of', 'transmit', 'antennas', 'in', 'this', 'work', 'we', 'analyze', 'the', 'ergodic', 'rate', 'of', 'a', 'multiuser', 'multiple', 'access', 'channel', 'mac', 'with', 'each', 'user', 'applying', 'such', 'a', 'cyclic', 'delay', 'diversity', 'cdd', 'code', 'we', 'derive', 'closed', 'form', 'expressions', 'for', 'the', 'ergodic', 'sumrate', 'of', 'multiuser', 'cdd', 'and', 'compare', 'it', 'with', 'the', 'sumcapacity', 'we', 'study', 'the', 'ergodic', 'rate', 'region', 'and', 'show', 'that', 'in', 'contrast', 'to', 'what', 'is', 'conventionally', 'known', 'regarding', 'the', 'singleuser', 'case', 'transmit', 'diversity', 'schemes', 'are', 'viable', 'candidates', 'for', 'high', 'rate', 'transmission', 'in', 'multiuser', 'systems', 'finally', 'our', 'theoretical', 'findings', 'are', 'illustrated', 'by', 'numerical', 'simulation', 'results']] | [-0.27090128267293917, 0.00968275985240445, -0.008375505384589945, 0.05376428101342274, -0.042302060451430194, -0.2859948551727479, 0.09581903694197536, 0.4071113894806131, -0.23907249794049945, -0.22115118917241527, 0.11134565753125392, -0.2365698109423757, -0.18406028324830254, 0.19241399125702638, -0.11380268869026702, 0.07976481292376315, 0.03317029633595107, 0.06267955139084913, -0.06147506909066259, -0.3082904337731364, 0.3178281627216755, 0.1530270026740874, 0.3561084298161114, -0.018136761803691694, 0.09106444486079145, 0.006792428358304468, -0.058654462573231085, -0.07382571033156057, -0.10773866950730335, 0.03577766269010461, 0.3340674007495681, 0.2402808672014434, 0.24178535893436645, -0.33695553470362016, -0.32433317403135065, 0.07084453148974597, 0.2128916827393798, 0.09666662546038464, -0.08500424465959301, -0.2146461066050496, 0.15095172754737068, -0.2382730489780942, -0.03838281173535346, 0.03937233240691597, -0.09435101527372723, 0.07599212875852622, -0.33647178908155023, 0.012472256073654006, 0.0005903362020195185, 0.05500871867995586, -0.0339185824805799, -0.13949708394312227, 0.05320459846176903, 0.16352479479526386, 0.03930692554126586, -0.04516903859189619, 0.06012262248403424, -0.04015574773075059, -0.13011750278467213, 0.3780578318241329, -0.009355600023399756, -0.24710468878294087, 0.17646523419119017, -0.1352289123997952, -0.08510518699863946, 0.20565217603151534, 0.23419210257438514, 0.0841219245384519, -0.16406677584522045, 0.04108032213068557, -0.01331044980299219, 0.19670797826896247, 0.11249617660791705, 0.19986217169111575, 0.14949742078289882, 0.17730807778067315, 0.11464724413907298, 0.1332593683788558, -0.08322897998012914, -0.13945510925899085, -0.20728292238193688, -0.13815119324743255, -0.1989554153706694, 0.01907552052916099, -0.12007960143139595, -0.035785028542095164, 0.31426213699422, 0.12318399157068068, 0.0808459530778966, 0.15463559965316492, 0.4048105533040323, 0.1158255792439117, 0.055633787416269655, 0.11758159840950272, 0.19555093785926986, 0.1399915474403015, 0.07237454886346094, -0.24872347005325687, 0.04018453563241145, 0.0005667705528929339] |
707.2781 | Set partition statistics and q-Fibonacci numbers | We consider the set partition statistics ls and rb introduced by Wachs and
White and investigate their distribution over set partitions avoiding certain
patterns. In particular, we consider those set partitions avoiding the pattern
13/2, $\Pi_n(13/2)$, and those avoiding both 13/2 and 123, $\Pi_n(13/2,123)$.
We show that the distribution over $\Pi_n(13/2)$ enumerates certain integer
partitions, and the distribution over $\Pi_n(13/2,123)$ gives q-Fibonacci
numbers. These q-Fibonacci numbers are closely related to q-Fibonacci numbers
studied by Carlitz and by Cigler. We provide combinatorial proofs that these
q-Fibonacci numbers satisfy q-analogues of many Fibonacci identities. Finally,
we indicate how p,q-Fibonacci numbers arising from the bistatistic (ls, rb)
give rise to p,q-analogues of identities.
| math.CO | we consider the set partition statistics ls and rb introduced by wachs and white and investigate their distribution over set partitions avoiding certain patterns in particular we consider those set partitions avoiding the pattern 132 pi_n132 and those avoiding both 132 and 123 pi_n132123 we show that the distribution over pi_n132 enumerates certain integer partitions and the distribution over pi_n132123 gives qfibonacci numbers these qfibonacci numbers are closely related to qfibonacci numbers studied by carlitz and by cigler we provide combinatorial proofs that these qfibonacci numbers satisfy qanalogues of many fibonacci identities finally we indicate how pqfibonacci numbers arising from the bistatistic ls rb give rise to pqanalogues of identities | [['we', 'consider', 'the', 'set', 'partition', 'statistics', 'ls', 'and', 'rb', 'introduced', 'by', 'wachs', 'and', 'white', 'and', 'investigate', 'their', 'distribution', 'over', 'set', 'partitions', 'avoiding', 'certain', 'patterns', 'in', 'particular', 'we', 'consider', 'those', 'set', 'partitions', 'avoiding', 'the', 'pattern', '132', 'pi_n132', 'and', 'those', 'avoiding', 'both', '132', 'and', '123', 'pi_n132123', 'we', 'show', 'that', 'the', 'distribution', 'over', 'pi_n132', 'enumerates', 'certain', 'integer', 'partitions', 'and', 'the', 'distribution', 'over', 'pi_n132123', 'gives', 'qfibonacci', 'numbers', 'these', 'qfibonacci', 'numbers', 'are', 'closely', 'related', 'to', 'qfibonacci', 'numbers', 'studied', 'by', 'carlitz', 'and', 'by', 'cigler', 'we', 'provide', 'combinatorial', 'proofs', 'that', 'these', 'qfibonacci', 'numbers', 'satisfy', 'qanalogues', 'of', 'many', 'fibonacci', 'identities', 'finally', 'we', 'indicate', 'how', 'pqfibonacci', 'numbers', 'arising', 'from', 'the', 'bistatistic', 'ls', 'rb', 'give', 'rise', 'to', 'pqanalogues', 'of', 'identities']] | [-0.1836761523986102, 0.1632727472577244, -0.046772030546812206, 0.13108322713524104, -0.07421759663238411, -0.10425365143233821, 0.08184805371399437, 0.2991707010815541, -0.3062198955565691, -0.33659905393918355, 0.06385794226856281, -0.3018517015767949, -0.17240317965902033, 0.1996451826677436, -0.11201032897945316, 0.026533560091186136, 0.016139403131923507, -0.011321209111927254, -0.036037185722670985, -0.30512080251217066, 0.32734212028306153, -0.07145194767841272, 0.2288439927179189, -0.022929195935527485, 0.046567061122152066, 0.035973662776052066, -0.06754947510503587, -0.007338639915299912, -0.1819002441847087, 0.10642021390210304, 0.22934804569397654, 0.18708615483538735, 0.1911639176223876, -0.39919109883762544, -0.06505285561350839, 0.15896090732754342, 0.14981067425438335, 0.015371048148898852, -0.02465781457722187, -0.22860168744588183, 0.13290753373432726, -0.18432281148575602, -0.10030382294873041, -0.11643582818852294, 0.027070074708067944, 0.16911065617487545, -0.2715697310332741, 0.03019881813476483, 0.055096563107023634, 0.10175208993965672, -0.0038346070663205214, -0.2599525823102643, 0.04570104169570619, 0.04666065869054624, 0.018156000721224006, -0.07500573070719838, -0.01082673714540544, -0.09412535694206045, -0.15306394815090157, 0.3578815314347767, 0.06693019979311862, -0.20971564014242697, 0.13988084792647335, -0.16739173419330092, -0.15312419199783886, 0.11104443157535224, 0.0747199926436657, 0.08975892411988406, -0.051641535253397056, 0.05639902649147968, -0.15292710456997155, 0.06888329626637556, 0.22844417825607316, 0.06675211450229177, 0.19330401946568773, -0.03318884129015108, -0.00521384443078811, 0.2313167857627074, -0.04320794019315924, -0.1041393306172852, -0.25477540502768187, -0.1273565481017743, -0.1424071821894142, 0.07493943770726522, -0.10862980003993947, -0.15781117741994205, 0.39572024136072115, 0.14604110130596729, 0.2413275587328133, 0.14271386409887954, 0.1385695480519817, 0.10611467816176758, 0.02557640480365427, 0.007780368661596661, 0.023898655335818017, 0.20206588317551427, 0.025745877926237882, -0.14491136331066845, 0.027127845647434392, 0.1765447458074916] |
707.2782 | Mass-Selection and the Evolution of the Morphology-Density Relation from
z=0.8 to z=0 | We examined the morphology-density relations for galaxy samples selected by
luminosity and by mass in each of five massive X-ray clusters from z=0.023 to
0.83 for 674 spectroscopically-confirmed members. Rest-frame optical colors and
visual morphologies were obtained primarily from Hubble Space Telescope images.
Morphology-density relations (MDR) are derived in each cluster from a complete,
luminosity-selected sample of 452 galaxies with a magnitude limit M_V <
M^{*}_{V} + 1. The change in the early-type fraction with redshift matches
previous work for massive clusters of galaxies. We performed a similar
analysis, deriving MDRs for complete, mass-selected samples of 441 galaxies
with a mass-limit of 10^{10.6} M_{\sun}. Our mass limit includes faint objects,
the equivalent of =~1 mag below L^{*} for the red cluster galaxies, and
encompasses =~70% of the stellar mass in cluster galaxies. The MDRs in the
mass-selected sample at densities of Sigma > 50 galaxies Mpc^{-2} are similar
to those in the luminosity-selected sample but show larger early-type
fractions. However, the trend with redshift in the fraction of elliptical and
S0 galaxies with masses > 10^{10.6} M_{\sun} differs significantly between the
mass- and luminosity-selected samples. The clear trend seen in the early-type
fraction from z=0 to z=~ 0.8 is not found in mass-selected samples. The
early-type galaxy fraction changes much less, and is consistent with being
constant at 92% +/- 4% at \Sigma> 500 galaxies Mpc^{-2} and 83 +/- 3% at 50 <
\Sigma < 500 galaxies Mpc^{-2}. This suggests that galaxies of mass lower than
> 10^{10.6} M_{\sun} play a significant role in the evolution of the early-type
fraction in luminosity-selected samples. (Abstract abridged)
| astro-ph | we examined the morphologydensity relations for galaxy samples selected by luminosity and by mass in each of five massive xray clusters from z0023 to 083 for 674 spectroscopicallyconfirmed members restframe optical colors and visual morphologies were obtained primarily from hubble space telescope images morphologydensity relations mdr are derived in each cluster from a complete luminosityselected sample of 452 galaxies with a magnitude limit m_v m_v 1 the change in the earlytype fraction with redshift matches previous work for massive clusters of galaxies we performed a similar analysis deriving mdrs for complete massselected samples of 441 galaxies with a masslimit of 10106 m_sun our mass limit includes faint objects the equivalent of 1 mag below l for the red cluster galaxies and encompasses 70 of the stellar mass in cluster galaxies the mdrs in the massselected sample at densities of sigma 50 galaxies mpc2 are similar to those in the luminosityselected sample but show larger earlytype fractions however the trend with redshift in the fraction of elliptical and s0 galaxies with masses 10106 m_sun differs significantly between the mass and luminosityselected samples the clear trend seen in the earlytype fraction from z0 to z 08 is not found in massselected samples the earlytype galaxy fraction changes much less and is consistent with being constant at 92 4 at sigma 500 galaxies mpc2 and 83 3 at 50 sigma 500 galaxies mpc2 this suggests that galaxies of mass lower than 10106 m_sun play a significant role in the evolution of the earlytype fraction in luminosityselected samples abstract abridged | [['we', 'examined', 'the', 'morphologydensity', 'relations', 'for', 'galaxy', 'samples', 'selected', 'by', 'luminosity', 'and', 'by', 'mass', 'in', 'each', 'of', 'five', 'massive', 'xray', 'clusters', 'from', 'z0023', 'to', '083', 'for', '674', 'spectroscopicallyconfirmed', 'members', 'restframe', 'optical', 'colors', 'and', 'visual', 'morphologies', 'were', 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707.2783 | On the Origin of Cosmic Magnetic Fields | We review the literature concerning how the cosmic magnetic fields pervading
nearly all galaxies actually got started. some observational evidence involves
the chemical abundance of the light elements Be and B, while another one is
based on strong magnetic fields seen in high red shift galaxies. Seed fields,
whose strength is of order 10^{-20} gauss, easily sprung up in the era
preceding galaxy formation. Several mechanisms are proposed to amplify these
seed fields to microgauss strengths. The standard mechanism is the Alpha-Omega
dynamo theory. It has a major difficulty that makes unlikely to provide the
sole origin. The difficulty is rooted in the fact that the total flux is
constant. This implies that flux must be removed from the galactic discs. This
requires that the field and flux be separated, for otherwise interstellar mass
must be removed from the deep galactic gravitational and then their strength
increased by the alpha omega theory.
| astro-ph | we review the literature concerning how the cosmic magnetic fields pervading nearly all galaxies actually got started some observational evidence involves the chemical abundance of the light elements be and b while another one is based on strong magnetic fields seen in high red shift galaxies seed fields whose strength is of order 1020 gauss easily sprung up in the era preceding galaxy formation several mechanisms are proposed to amplify these seed fields to microgauss strengths the standard mechanism is the alphaomega dynamo theory it has a major difficulty that makes unlikely to provide the sole origin the difficulty is rooted in the fact that the total flux is constant this implies that flux must be removed from the galactic discs this requires that the field and flux be separated for otherwise interstellar mass must be removed from the deep galactic gravitational and then their strength increased by the alpha omega theory | [['we', 'review', 'the', 'literature', 'concerning', 'how', 'the', 'cosmic', 'magnetic', 'fields', 'pervading', 'nearly', 'all', 'galaxies', 'actually', 'got', 'started', 'some', 'observational', 'evidence', 'involves', 'the', 'chemical', 'abundance', 'of', 'the', 'light', 'elements', 'be', 'and', 'b', 'while', 'another', 'one', 'is', 'based', 'on', 'strong', 'magnetic', 'fields', 'seen', 'in', 'high', 'red', 'shift', 'galaxies', 'seed', 'fields', 'whose', 'strength', 'is', 'of', 'order', '1020', 'gauss', 'easily', 'sprung', 'up', 'in', 'the', 'era', 'preceding', 'galaxy', 'formation', 'several', 'mechanisms', 'are', 'proposed', 'to', 'amplify', 'these', 'seed', 'fields', 'to', 'microgauss', 'strengths', 'the', 'standard', 'mechanism', 'is', 'the', 'alphaomega', 'dynamo', 'theory', 'it', 'has', 'a', 'major', 'difficulty', 'that', 'makes', 'unlikely', 'to', 'provide', 'the', 'sole', 'origin', 'the', 'difficulty', 'is', 'rooted', 'in', 'the', 'fact', 'that', 'the', 'total', 'flux', 'is', 'constant', 'this', 'implies', 'that', 'flux', 'must', 'be', 'removed', 'from', 'the', 'galactic', 'discs', 'this', 'requires', 'that', 'the', 'field', 'and', 'flux', 'be', 'separated', 'for', 'otherwise', 'interstellar', 'mass', 'must', 'be', 'removed', 'from', 'the', 'deep', 'galactic', 'gravitational', 'and', 'then', 'their', 'strength', 'increased', 'by', 'the', 'alpha', 'omega', 'theory']] | [-0.1252043699557697, 0.19233009983834468, -0.04124511178509381, 0.09408407042486176, -0.11882814067786585, -0.03678427241424, 0.020601388172699922, 0.3824476998446411, -0.24477836504382522, -0.3359055441167009, 0.05113887208158543, -0.23591452348046005, -0.08908002415869544, 0.1942298596312819, -0.02753791167082167, -0.06717244577425606, 0.011995672128825007, 0.009915474215775152, 0.027181699700457484, -0.28138950931392365, 0.3222255450489588, 0.08868583733974926, 0.2146396997762311, 0.034270553164931605, 0.0558452310027573, -0.10897191411411193, -0.03296044107685846, 0.02125986332401609, -0.09893243033595929, 0.050109681491066066, 0.19861506506200194, 0.1337927397873596, 0.2599547699976124, -0.4417949636699632, -0.23772737457980647, 0.1249315571438178, 0.16673742544356318, 0.10382378221287294, -0.0878311501927735, -0.236646502621864, 0.09853488816512063, -0.10569145522497006, -0.16613322197104266, 0.004614949024184362, 0.02850261115619153, 0.008642928594781552, -0.23933163705576016, 0.06595457838327427, 0.06324130395277232, 0.04553689522129532, -0.0707104949397035, -0.10540957751953484, -0.046754203148578345, 0.11338417864355602, 0.11664611880367279, 0.13222724677210576, 0.18139758546940835, -0.1471458621580448, -0.04184939363959098, 0.3795724445647609, -0.05841900416616179, -0.07121238106169346, 0.18248751222333676, -0.17390021085310237, -0.15656845498367483, 0.16472154519961854, 0.11678646254586056, 0.08562646334451672, -0.15527561346473367, 0.09306526026495321, -0.004712320168772222, 0.1794126054431361, 0.05855497171777595, 0.007668341739860664, 0.2956259819237809, 0.06638672443621449, 0.052855012114282306, 0.08070431786013375, -0.1107141649133011, -0.046346554757818875, -0.2729585007779717, -0.09582206307784777, -0.13580235540116278, 0.1054157322260404, -0.10639943937913861, -0.13023388493916413, 0.3433602682351576, 0.16470949843182767, 0.200744941726474, -0.010850627073331884, 0.309584071387929, 0.11232576153997798, 0.11844972166804119, 0.09078336645861303, 0.34372994266729956, 0.19768442445906417, 0.0992202400720041, -0.19517919693393387, 0.0833885671515753, 0.03150564270081783] |
707.2784 | A Note on the Pfaffian Integration Theorem | Two alternative, fairly compact proofs are presented of the Pfaffian
integration theorem that is surfaced in the recent studies of spectral
properties of Ginibre's Orthogonal Ensemble. The first proof is based on a
concept of the Fredholm Pfaffian; the second proof is purely linear-algebraic.
| math-ph cond-mat.dis-nn hep-th math.MP math.PR nlin.SI | two alternative fairly compact proofs are presented of the pfaffian integration theorem that is surfaced in the recent studies of spectral properties of ginibres orthogonal ensemble the first proof is based on a concept of the fredholm pfaffian the second proof is purely linearalgebraic | [['two', 'alternative', 'fairly', 'compact', 'proofs', 'are', 'presented', 'of', 'the', 'pfaffian', 'integration', 'theorem', 'that', 'is', 'surfaced', 'in', 'the', 'recent', 'studies', 'of', 'spectral', 'properties', 'of', 'ginibres', 'orthogonal', 'ensemble', 'the', 'first', 'proof', 'is', 'based', 'on', 'a', 'concept', 'of', 'the', 'fredholm', 'pfaffian', 'the', 'second', 'proof', 'is', 'purely', 'linearalgebraic']] | [-0.1658696548798947, 0.02166950749233365, -0.1884976253760132, 0.08154194516034542, -0.1407788676125082, -0.0956266947958449, -0.016160323697311633, 0.31704663432372565, -0.17924398827281865, -0.2183487436480143, 0.1395306239957625, -0.20155169048600577, -0.18379574827849865, 0.24439522700214927, -0.07820197789591145, 0.03223108747889372, 0.06877232167277146, 0.00935110946143554, -0.1268743029742671, -0.23944020449099215, 0.3685996813371524, -0.0021315943978896194, 0.2893901551142335, 0.08261545675552705, 0.07195364133539525, 0.01685137205376205, -0.10075540110384198, -0.08252465390251018, -0.08550662785025699, 0.193493274029937, 0.2647509745703163, 0.10436478833964263, 0.2595281218263236, -0.3472596595317803, -0.10771965561666134, 0.06104509708132933, 0.10781906497537751, 0.09430499463765459, -0.04359817586638118, -0.28926800030537625, 0.1007106146267192, -0.1418401843614199, -0.17614056349901314, -0.0745786517165305, 0.00387976814950393, 0.05483761191664433, -0.20739696339958094, 0.05111358924345537, 0.19992863029156896, 0.07956901423908262, -0.026227633151310412, -0.15676936179145493, 0.026199764688499272, 0.022188598946244878, -0.010448913010556928, -0.031459098269062284, 0.0824617984789339, -0.062439993701197884, -0.18617835343519057, 0.31821992129500193, -0.04283448698168451, -0.20075261833103883, 0.17461168961281973, -0.03715293831191957, -0.19447129807138647, 0.1290005651112138, 0.0572905623015355, 0.16899157417091457, -0.14913073046640915, 0.1134870311837982, -0.12052599247545004, 0.13111730698834767, 0.06713451073631983, 0.05196205849378285, 0.13263763341290707, 0.16845832866701213, 0.07081933550282636, 0.1583957425847819, 0.007660645970397375, -0.15460833479565653, -0.35856929599222814, -0.22786303677342154, -0.3045602897393771, 0.08748827830211005, -0.09466957963410426, -0.22652983707799154, 0.4061863344501365, 0.08592501709063072, 0.142394395545125, 0.09765083172400905, 0.3107230004600503, 0.15307789200133728, 0.019823093051937492, -0.01743397788694975, 0.22372942489825867, 0.24483970658514986, 0.06725372493648055, -0.12407134900422534, 0.01810179520874623, 0.22706926671195438] |
707.2785 | Multifloquet to single electronic channel transition in the transport
properties of a resistive 1D driven disordered ring | We investigate the dc response of a 1D disordered ring coupled to a reservoir
and driven by a magnetic flux with a linear dependence on time. We identify two
regimes: (i) A localized or large length L regime, characterized by a dc
conductance, g_{dc}, whose probability distribution P(g_{dc}) is identical to
the one exhibited by a 1D wire of the same length L and disorder strength
placed in a Landauer setup. (ii) A "multifloquet" regime for small L and weak
coupling to the reservoir, which exhibits large currents and conductances that
can be g_{dc} > 1, in spite of the fact that the ring contains a single
electronic transmission channel. The crossover length between the multifloquet
to the single channel transport regime, L_c, is controlled by the coupling to
the reservoir.
| cond-mat.mes-hall | we investigate the dc response of a 1d disordered ring coupled to a reservoir and driven by a magnetic flux with a linear dependence on time we identify two regimes i a localized or large length l regime characterized by a dc conductance g_dc whose probability distribution pg_dc is identical to the one exhibited by a 1d wire of the same length l and disorder strength placed in a landauer setup ii a multifloquet regime for small l and weak coupling to the reservoir which exhibits large currents and conductances that can be g_dc 1 in spite of the fact that the ring contains a single electronic transmission channel the crossover length between the multifloquet to the single channel transport regime l_c is controlled by the coupling to the reservoir | [['we', 'investigate', 'the', 'dc', 'response', 'of', 'a', '1d', 'disordered', 'ring', 'coupled', 'to', 'a', 'reservoir', 'and', 'driven', 'by', 'a', 'magnetic', 'flux', 'with', 'a', 'linear', 'dependence', 'on', 'time', 'we', 'identify', 'two', 'regimes', 'i', 'a', 'localized', 'or', 'large', 'length', 'l', 'regime', 'characterized', 'by', 'a', 'dc', 'conductance', 'g_dc', 'whose', 'probability', 'distribution', 'pg_dc', 'is', 'identical', 'to', 'the', 'one', 'exhibited', 'by', 'a', '1d', 'wire', 'of', 'the', 'same', 'length', 'l', 'and', 'disorder', 'strength', 'placed', 'in', 'a', 'landauer', 'setup', 'ii', 'a', 'multifloquet', 'regime', 'for', 'small', 'l', 'and', 'weak', 'coupling', 'to', 'the', 'reservoir', 'which', 'exhibits', 'large', 'currents', 'and', 'conductances', 'that', 'can', 'be', 'g_dc', '1', 'in', 'spite', 'of', 'the', 'fact', 'that', 'the', 'ring', 'contains', 'a', 'single', 'electronic', 'transmission', 'channel', 'the', 'crossover', 'length', 'between', 'the', 'multifloquet', 'to', 'the', 'single', 'channel', 'transport', 'regime', 'l_c', 'is', 'controlled', 'by', 'the', 'coupling', 'to', 'the', 'reservoir']] | [-0.24232906360179185, 0.1958306985362433, -0.02270846636593342, -0.008047758961096406, 0.01221760021150112, -0.22177725060284137, 0.06150709518883377, 0.33513435468822717, -0.30392142206430434, -0.25033095468580724, 0.04377100684307516, -0.27490310110151767, -0.08492189811356365, 0.17030868597887455, 0.03675441569089889, -0.005435976032167673, -0.00505720179527998, 0.015444081246852875, -0.03668405593559146, -0.1618737190067768, 0.2946384041160345, 0.04579699942469597, 0.30123957272619006, 0.04983639837801456, 0.07822492887452245, -0.0007606133483350276, 0.06768521210551262, 0.09370950879435987, -0.12995331697596701, 0.03608217816799879, 0.19707070529460907, -0.07145204171910882, 0.24668005868792534, -0.4260920278653502, -0.20398912214674056, 0.05818532752245665, 0.1365909746903926, 0.11761962718138239, -0.003513273068703711, -0.24067980097234248, 0.042854504205286505, -0.13397552211768926, -0.11081632101442665, 0.019970079591963442, 0.07434985298290848, 0.032974425680935386, -0.31356134491413834, 0.08574495872855187, 0.059348563708364964, 0.040131877027451995, 0.020283063070848584, -0.0421149383187294, -0.023100278694182633, 0.10379444592632353, -0.0067808226123452185, 0.01422787378821522, 0.17268349116295575, -0.14292870939313435, -0.04969088361505419, 0.30512376049160955, -0.14046545556187628, -0.17525222377479077, 0.19671074169967323, -0.18547993560507894, -0.026960299083963038, 0.15748688211850823, 0.1141735457032919, 0.07423538088425993, -0.15909717581188307, 0.0872903647851199, -0.05183511958830059, 0.1961746688783169, 0.022238251702859996, 0.0675055686570704, 0.2324167074561119, 0.19383436182979494, 0.03290973174246028, 0.17338552269991486, -0.14126732421852647, -0.07786710273101925, -0.2922534473538399, -0.10958648252487183, -0.2302665833979845, 0.100593450948596, -0.05487671508966014, -0.17297415894642473, 0.41741924096643923, 0.11449289121851325, 0.24683198972418904, 0.036468016357161105, 0.2448612881936133, 0.17172632915526628, 0.09141334304958582, 0.08297045628726482, 0.21484979110280983, 0.16903379405196756, 0.09344856325164437, -0.30451910839974883, 0.03588335475698114, 0.01877298896946013] |
707.2786 | Twisting gauged non-linear sigma-models | We consider gauged sigma-models from a Riemann surface into a Kaehler and
hamiltonian G-manifold X. The supersymmetric N=2 theory can always be twisted
to produce a gauged A-model. This model localizes to the moduli space of
solutions of the vortex equations and computes the Hamiltonian Gromov-Witten
invariants. When the target is equivariantly Calabi-Yau, i.e. when its first
G-equivariant Chern class vanishes, the supersymmetric theory can also be
twisted into a gauged B-model. This model localizes to the Kaehler quotient
X//G.
| hep-th math.DG | we consider gauged sigmamodels from a riemann surface into a kaehler and hamiltonian gmanifold x the supersymmetric n2 theory can always be twisted to produce a gauged amodel this model localizes to the moduli space of solutions of the vortex equations and computes the hamiltonian gromovwitten invariants when the target is equivariantly calabiyau ie when its first gequivariant chern class vanishes the supersymmetric theory can also be twisted into a gauged bmodel this model localizes to the kaehler quotient xg | [['we', 'consider', 'gauged', 'sigmamodels', 'from', 'a', 'riemann', 'surface', 'into', 'a', 'kaehler', 'and', 'hamiltonian', 'gmanifold', 'x', 'the', 'supersymmetric', 'n2', 'theory', 'can', 'always', 'be', 'twisted', 'to', 'produce', 'a', 'gauged', 'amodel', 'this', 'model', 'localizes', 'to', 'the', 'moduli', 'space', 'of', 'solutions', 'of', 'the', 'vortex', 'equations', 'and', 'computes', 'the', 'hamiltonian', 'gromovwitten', 'invariants', 'when', 'the', 'target', 'is', 'equivariantly', 'calabiyau', 'ie', 'when', 'its', 'first', 'gequivariant', 'chern', 'class', 'vanishes', 'the', 'supersymmetric', 'theory', 'can', 'also', 'be', 'twisted', 'into', 'a', 'gauged', 'bmodel', 'this', 'model', 'localizes', 'to', 'the', 'kaehler', 'quotient', 'xg']] | [-0.19137388560920954, 0.1184283763053827, -0.09467865764163434, 0.1194545043152175, -0.11647730972617865, -0.23491340467589908, -0.0656783045764314, 0.27755223102867604, -0.2787200095131993, -0.2096241870895028, 0.05108066479151603, -0.2713108441210352, -0.21095699380675798, 0.09637179304263555, -0.1703858948065317, 0.01671135278811562, 0.01573572463239543, 0.05313411869574338, -0.16295921963173896, -0.317549975370639, 0.38816060525132345, -0.09516893294639886, 0.22053524777584244, 0.0630069742212072, 0.13338033284380799, -0.05969413432467263, 0.09471242801519111, -0.02409924161074741, -0.10790730455773882, 0.13776383261429145, 0.3052228811196983, 0.011885793146211654, 0.02734849555999972, -0.4430029721930623, -0.21655746289325178, 0.17987842180009467, 0.131985856348183, 0.10011323066428304, 0.07520398377237143, -0.33410677742213013, 0.08972526368161197, -0.16216617068857886, -0.18444779086858035, -0.10720962611376308, 0.026252364163519816, -0.10941014849813654, -0.20993727073073387, -0.03665672437382454, 0.0008915552520193159, -0.006295965181197971, -0.10837007669179002, -0.023038999977870844, -0.2565592439379543, 0.022592516782606254, 0.07286296935781138, 0.1500281781947706, 0.1367245167377405, -0.15276585036772303, -0.10149566380569013, 0.39877251321449875, -0.09825747103313916, -0.32236668991390616, 0.006480410706717521, -0.09901096651155968, -0.1845535158034181, 0.168883095496858, 0.08130076834349893, 0.24900641295826062, -0.0015097188024810748, 0.28719612462300576, -0.11067038655746728, 0.1038037423917558, 0.04345820298185572, -0.05250450281891972, 0.2668835760225193, 0.12673011928563938, 0.09354112291475758, 0.15432672422321048, -0.0210234519734513, -0.08671193888876587, -0.4417875248938799, -0.20777979257982224, -0.09280556487501598, 0.249887449585367, -0.10380822167462611, -0.19037956153042615, 0.44524573170929216, 0.03548665151465684, 0.1810171462562721, 0.14827254575211554, 0.21167712756432594, 0.10105161220999434, 0.04421627816627734, 0.021239317080471665, 0.15931368207093327, 0.21525282639777288, -0.03597016668645665, -0.17164748384675477, -0.20981000727042556, 0.32496316588949414] |
707.2787 | The Evolution of the Field and Cluster Morphology-Density Relation for
Mass-Selected Samples of Galaxies | The Sloan Digital Sky Survey (SDSS) and photometric/spectroscopic surveys in
the GOODS-South field (the Chandra Deep Field-South, CDFS) are used to
construct volume-limited, stellar mass-selected samples of galaxies at
redshifts 0<z<1. The CDFS sample at 0.6<z<1.0 contains 207 galaxies complete
down to M=4x10^10 Msol (for a ``diet'' Salpeter IMF), corresponding to a
luminosity limit for red galaxies of M_B=-20.1. The SDSS sample at
0.020<z<0.045 contains 2003 galaxies down to the same mass limit, which
corresponds to M_B=-19.3 for red galaxies. Morphologies are determined with an
automated method, using the Sersic parameter n and a measure of the residual
from the model fits, called ``bumpiness'', to distinguish different
morphologies. These classifications are verified with visual classifications.
In agreement with previous studies, 65-70% of the galaxies are located on the
red sequence, both at z~0.03 and at z~0.8. Similarly, 65-70% of the galaxies
have n>2.5. The fraction of E+S0 galaxies is 43+/-3%$ at z~0.03 and 48+/-7% at
z~0.8, i.e., it has not changed significantly since z~0.8. When combined with
recent results for cluster galaxies in the same redshift range, we find that
the morphology-density relation for galaxies more massive than 0.5M* has
remained constant since at least z~0.8. This implies that galaxies evolve in
mass, morphology and density such that the morphology-density relation does not
change. In particular, the decline of star formation activity and the
accompanying increase in the stellar mass density of red galaxies since z~1
must happen without large changes in the early-type galaxy fraction in a given
environment.
| astro-ph | the sloan digital sky survey sdss and photometricspectroscopic surveys in the goodssouth field the chandra deep fieldsouth cdfs are used to construct volumelimited stellar massselected samples of galaxies at redshifts 0z1 the cdfs sample at 06z10 contains 207 galaxies complete down to m4x1010 msol for a diet salpeter imf corresponding to a luminosity limit for red galaxies of m_b201 the sdss sample at 0020z0045 contains 2003 galaxies down to the same mass limit which corresponds to m_b193 for red galaxies morphologies are determined with an automated method using the sersic parameter n and a measure of the residual from the model fits called bumpiness to distinguish different morphologies these classifications are verified with visual classifications in agreement with previous studies 6570 of the galaxies are located on the red sequence both at z003 and at z08 similarly 6570 of the galaxies have n25 the fraction of es0 galaxies is 433 at z003 and 487 at z08 ie it has not changed significantly since z08 when combined with recent results for cluster galaxies in the same redshift range we find that the morphologydensity relation for galaxies more massive than 05m has remained constant since at least z08 this implies that galaxies evolve in mass morphology and density such that the morphologydensity relation does not change in particular the decline of star formation activity and the accompanying increase in the stellar mass density of red galaxies since z1 must happen without large changes in the earlytype galaxy fraction in a given environment | [['the', 'sloan', 'digital', 'sky', 'survey', 'sdss', 'and', 'photometricspectroscopic', 'surveys', 'in', 'the', 'goodssouth', 'field', 'the', 'chandra', 'deep', 'fieldsouth', 'cdfs', 'are', 'used', 'to', 'construct', 'volumelimited', 'stellar', 'massselected', 'samples', 'of', 'galaxies', 'at', 'redshifts', '0z1', 'the', 'cdfs', 'sample', 'at', '06z10', 'contains', '207', 'galaxies', 'complete', 'down', 'to', 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707.2788 | Evolutionary Fitting Methods for the Extraction of Mass Spectra in
Lattice Field Theory | We present an application of evolutionary algorithms to the curve-fitting
problems commonly encountered when trying to extract particle masses from
correlators in Lattice QCD. Harnessing the flexibility of evolutionary methods
in global optimization allows us to dynamically adapt the number of states to
be fitted along with their energies so as to minimize overall \chi^2/(d.o.f.),
leading to a promising new way of extracting the mass spectrum from measured
correlation functions.
| hep-lat physics.comp-ph | we present an application of evolutionary algorithms to the curvefitting problems commonly encountered when trying to extract particle masses from correlators in lattice qcd harnessing the flexibility of evolutionary methods in global optimization allows us to dynamically adapt the number of states to be fitted along with their energies so as to minimize overall chi2dof leading to a promising new way of extracting the mass spectrum from measured correlation functions | [['we', 'present', 'an', 'application', 'of', 'evolutionary', 'algorithms', 'to', 'the', 'curvefitting', 'problems', 'commonly', 'encountered', 'when', 'trying', 'to', 'extract', 'particle', 'masses', 'from', 'correlators', 'in', 'lattice', 'qcd', 'harnessing', 'the', 'flexibility', 'of', 'evolutionary', 'methods', 'in', 'global', 'optimization', 'allows', 'us', 'to', 'dynamically', 'adapt', 'the', 'number', 'of', 'states', 'to', 'be', 'fitted', 'along', 'with', 'their', 'energies', 'so', 'as', 'to', 'minimize', 'overall', 'chi2dof', 'leading', 'to', 'a', 'promising', 'new', 'way', 'of', 'extracting', 'the', 'mass', 'spectrum', 'from', 'measured', 'correlation', 'functions']] | [-0.005798508253480707, 0.0858799672371658, -0.1332509441833411, 0.09701023128665319, -0.09408390818695937, -0.10951441233046352, 0.05469377922625946, 0.39098505675792694, -0.29701938210720463, -0.37722976497773614, 0.0443846263157736, -0.25295628625587724, -0.08870977167971432, 0.1711172425670416, -0.04577924864632743, 0.12033023187624557, 0.03708092616205769, -0.006736116171149271, -0.08191766632454736, -0.20782617808186582, 0.2903078342654875, 0.08944749490890119, 0.23239466929808258, 0.05323784637397953, 0.04685619237965771, -0.007528288236686161, -0.02504814222588071, 0.0030646344513765404, -0.13382395134706582, 0.16436439339720113, 0.2891461310109922, 0.14007550152683898, 0.23743038411651338, -0.40738275040473254, -0.17143569107699608, 0.13692721361294388, 0.18924353372837815, 0.14050685412117414, -0.006476912115301404, -0.23208984457222478, 0.07581533856822976, -0.15532883426307567, -0.16673036458502924, -0.12860090313479305, -0.03405470347164997, 0.021349218647394863, -0.29131246700084634, 0.051257023401558396, -0.0972642133012414, -0.025302701203950815, -0.06791047585679084, -0.1691994108459247, -0.029004181788436004, 0.17445008523770542, 0.10940835362832461, 0.06282711804711393, 0.14071309296414256, -0.14293250289546058, -0.16141818744446418, 0.42602176374888845, -0.02748830681250963, -0.16899961666869265, 0.20292310550742385, -0.07198101272806526, -0.15265814079237836, 0.14249934659206442, 0.22746142387124044, 0.09524494200761963, -0.1819559105715598, 0.010386213254449623, 0.054173902754804916, 0.1651048940207277, 0.04563894000436578, 0.04984022969646113, 0.22301511179788835, 0.14414920602825337, 0.07879832327099782, 0.1468138532613271, -0.0594877417141106, -0.12750993386975357, -0.2275047596277935, -0.0863131925363892, -0.1736092167773417, 0.03378399617171713, -0.08189811192985091, -0.16158558956813068, 0.4207092623625483, 0.21555367694236338, 0.24919486793556384, 0.07868491639653387, 0.29667155258357525, 0.0901910885752711, 0.12992823176817703, 0.07315272344608924, 0.22426599247181522, 0.14464430838291134, 0.11513234644329974, -0.24280275708463575, 0.020024327880985637, 0.03802398364059627] |
707.2789 | Nonthermal steady states after an interaction quench in the
Falicov-Kimball model | We present the exact solution of the Falicov-Kimball model after a sudden
change of its interaction parameter using non-equilibrium dynamical mean-field
theory. For different interaction quenches between the homogeneous metallic and
insulating phases the system relaxes to a non-thermal steady state on time
scales on the order of hbar/bandwidth, showing collapse and revival with an
approximate period of h/interaction if the interaction is large. We discuss the
reasons for this behavior and provide a statistical description of the final
steady state by means of generalized Gibbs ensembles.
| cond-mat.str-el cond-mat.stat-mech | we present the exact solution of the falicovkimball model after a sudden change of its interaction parameter using nonequilibrium dynamical meanfield theory for different interaction quenches between the homogeneous metallic and insulating phases the system relaxes to a nonthermal steady state on time scales on the order of hbarbandwidth showing collapse and revival with an approximate period of hinteraction if the interaction is large we discuss the reasons for this behavior and provide a statistical description of the final steady state by means of generalized gibbs ensembles | [['we', 'present', 'the', 'exact', 'solution', 'of', 'the', 'falicovkimball', 'model', 'after', 'a', 'sudden', 'change', 'of', 'its', 'interaction', 'parameter', 'using', 'nonequilibrium', 'dynamical', 'meanfield', 'theory', 'for', 'different', 'interaction', 'quenches', 'between', 'the', 'homogeneous', 'metallic', 'and', 'insulating', 'phases', 'the', 'system', 'relaxes', 'to', 'a', 'nonthermal', 'steady', 'state', 'on', 'time', 'scales', 'on', 'the', 'order', 'of', 'hbarbandwidth', 'showing', 'collapse', 'and', 'revival', 'with', 'an', 'approximate', 'period', 'of', 'hinteraction', 'if', 'the', 'interaction', 'is', 'large', 'we', 'discuss', 'the', 'reasons', 'for', 'this', 'behavior', 'and', 'provide', 'a', 'statistical', 'description', 'of', 'the', 'final', 'steady', 'state', 'by', 'means', 'of', 'generalized', 'gibbs', 'ensembles']] | [-0.1444269119094208, 0.19180719041255276, -0.1353284895639209, 0.06602863387807327, 0.029100290666717817, -0.12234541804064065, 0.07488607845460886, 0.32306127002024476, -0.2659913732122411, -0.2734824385713128, 0.07873415546491742, -0.2455977590645061, -0.10101047823315158, 0.12610896238851743, 0.06117894400787704, 0.03931214921356192, 0.07207361795008183, 0.02153034750954248, -0.1275349133702762, -0.19628674216458902, 0.34535487743423265, 0.015519949830794598, 0.26962464103639566, 0.06647035952876595, 0.10089868336696835, 0.010604686281808159, 0.09302213713903364, 0.012982780869831057, -0.16074770598617547, 0.019330186479012756, 0.15302195418009754, 0.08371110319652979, 0.2576416065149448, -0.46390923482968527, -0.2168491668013089, 0.09831484943792662, 0.11771691332242507, 0.1767195485313149, -0.01830985125784269, -0.30968796371975366, -0.008087517134845257, -0.2272008840323371, -0.17856129098354895, -0.10615338059690069, 0.041630176652003734, 0.03612212102367159, -0.24758483934736647, 0.16403547498014043, 0.05637077615589506, 0.05456580341355327, -0.11971066149417312, -0.03503229879253708, -0.004327149867244503, 0.11987155521945918, 0.04217858226449393, 0.002214903855586753, 0.10681767666383701, -0.15091707242707558, -0.09666993838789709, 0.3456986937781467, -0.0646022979170084, -0.11964501390124069, 0.21889260294025434, -0.12447441231531282, -0.09724701289087534, 0.13371883369982243, 0.12598341532489832, 0.0941154974654851, -0.1321105840122875, 0.06691414680509992, 0.009910293832859572, 0.18383600591298413, -0.017377557189149014, 0.0064329651211771895, 0.2264783340451472, 0.2265698262325981, 0.043155806114458864, 0.2038361423813245, -0.07105178880669615, -0.18427108730025152, -0.30740287428831353, -0.12932873993208083, -0.2036842835300109, 0.09479057670927003, -0.10895401652275777, -0.2046610367977444, 0.4527908728184069, 0.1532748649978791, 0.17997148100505858, 0.027947608228115473, 0.24504524516489576, 0.15316480759750395, -0.061902529527672896, 0.06896427259506548, 0.2524173889857005, 0.14395486701499013, 0.09462117638219805, -0.28545373457977, 0.08442618163192973, 0.07329053170431186] |
707.279 | The Evolving Faint-End of the Luminosity Function | We investigate the evolution of the faint-end slope of the luminosity
function, $\alpha$, using semi-analytical modeling of galaxy formation. In
agreement with observations, we find that the slope can be fitted well by
$\alpha (z) =a+b z$, with a=-1.13 and b=-0.1. The main driver for the evolution
in $\alpha$ is the evolution in the underlying dark matter mass function.
Sub-L_* galaxies reside in dark matter halos that occupy a different part of
the mass function. At high redshifts, this part of the mass function is steeper
than at low redshifts and hence $\alpha$ is steeper. Supernova feedback in
general causes the same relative flattening with respect to the dark matter
mass function. The faint-end slope at low redshifts is dominated by field
galaxies and at high redshifts by cluster galaxies. The evolution of
$\alpha(z)$ in each of these environments is different, with field galaxies
having a slope b=-0.14 and cluster galaxies b=-0.05. The transition from
cluster-dominated to field-dominated faint-end slope occurs roughly at a
redshift $z_* \sim 2$, and suggests that a single linear fit to the overall
evolution of $\alpha(z)$ might not be appropriate. Furthermore, this result
indicates that tidal disruption of dwarf galaxies in clusters cannot play a
significant role in explaining the evolution of $\alpha(z)$ at z< z_*. In
addition we find that different star formation efficiencies a_* in the
Schmidt-Kennicutt-law and supernovae-feedback efficiencies $\epsilon$ generally
do not strongly influence the evolution of $\alpha(z)$.
| astro-ph | we investigate the evolution of the faintend slope of the luminosity function alpha using semianalytical modeling of galaxy formation in agreement with observations we find that the slope can be fitted well by alpha z ab z with a113 and b01 the main driver for the evolution in alpha is the evolution in the underlying dark matter mass function subl_ galaxies reside in dark matter halos that occupy a different part of the mass function at high redshifts this part of the mass function is steeper than at low redshifts and hence alpha is steeper supernova feedback in general causes the same relative flattening with respect to the dark matter mass function the faintend slope at low redshifts is dominated by field galaxies and at high redshifts by cluster galaxies the evolution of alphaz in each of these environments is different with field galaxies having a slope b014 and cluster galaxies b005 the transition from clusterdominated to fielddominated faintend slope occurs roughly at a redshift z_ sim 2 and suggests that a single linear fit to the overall evolution of alphaz might not be appropriate furthermore this result indicates that tidal disruption of dwarf galaxies in clusters cannot play a significant role in explaining the evolution of alphaz at z z_ in addition we find that different star formation efficiencies a_ in the schmidtkennicuttlaw and supernovaefeedback efficiencies epsilon generally do not strongly influence the evolution of alphaz | [['we', 'investigate', 'the', 'evolution', 'of', 'the', 'faintend', 'slope', 'of', 'the', 'luminosity', 'function', 'alpha', 'using', 'semianalytical', 'modeling', 'of', 'galaxy', 'formation', 'in', 'agreement', 'with', 'observations', 'we', 'find', 'that', 'the', 'slope', 'can', 'be', 'fitted', 'well', 'by', 'alpha', 'z', 'ab', 'z', 'with', 'a113', 'and', 'b01', 'the', 'main', 'driver', 'for', 'the', 'evolution', 'in', 'alpha', 'is', 'the', 'evolution', 'in', 'the', 'underlying', 'dark', 'matter', 'mass', 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707.2791 | Shadow vacuum alignment and dark energy | In a recent model of dark energy (with several phenomenological
consequences), the universe is assumed to be trapped in a false vacuum with an
energy density of the order of (10^{-3} eV)^4, mimicking the presently
successful $\Lambda CDM$ scenario. This involves a new gauge group SU(2)_Z,
{\em the shadow sector}, which becomes strong at a scale $\Lambda_Z \sim
10^{-3} eV$. The model is described by the SU(2)_Z instanton-induced potential
of an axion-like scalar field, a_Z, with two degenerate vacuua. The false
(metastable) vacuum appears as a result of an phenomenological (ad-hoc) soft
breaking term linear in a_Z which explicitely breaks that degeneracy. In this
paper, we discuss a possible dynamical origin for this soft breaking term as
coming from the alignment of the vacuum along a direction in which the
condensate of the shadow fermions, $<\bar{\psi}^{(Z)}_{i} i \gamma_{5}
\psi^{(Z)}_{i}>$ which breaks spontaneously both P and CP, is non-vanishing.
The present universe lives in a vacuum which violates both P and CP in the
shadow SU(2)_Z sector!
| hep-ph astro-ph | in a recent model of dark energy with several phenomenological consequences the universe is assumed to be trapped in a false vacuum with an energy density of the order of 103 ev4 mimicking the presently successful lambda cdm scenario this involves a new gauge group su2_z em the shadow sector which becomes strong at a scale lambda_z sim 103 ev the model is described by the su2_z instantoninduced potential of an axionlike scalar field a_z with two degenerate vacuua the false metastable vacuum appears as a result of an phenomenological adhoc soft breaking term linear in a_z which explicitely breaks that degeneracy in this paper we discuss a possible dynamical origin for this soft breaking term as coming from the alignment of the vacuum along a direction in which the condensate of the shadow fermions barpsiz_i i gamma_5 psiz_i which breaks spontaneously both p and cp is nonvanishing the present universe lives in a vacuum which violates both p and cp in the shadow su2_z sector | [['in', 'a', 'recent', 'model', 'of', 'dark', 'energy', 'with', 'several', 'phenomenological', 'consequences', 'the', 'universe', 'is', 'assumed', 'to', 'be', 'trapped', 'in', 'a', 'false', 'vacuum', 'with', 'an', 'energy', 'density', 'of', 'the', 'order', 'of', '103', 'ev4', 'mimicking', 'the', 'presently', 'successful', 'lambda', 'cdm', 'scenario', 'this', 'involves', 'a', 'new', 'gauge', 'group', 'su2_z', 'em', 'the', 'shadow', 'sector', 'which', 'becomes', 'strong', 'at', 'a', 'scale', 'lambda_z', 'sim', '103', 'ev', 'the', 'model', 'is', 'described', 'by', 'the', 'su2_z', 'instantoninduced', 'potential', 'of', 'an', 'axionlike', 'scalar', 'field', 'a_z', 'with', 'two', 'degenerate', 'vacuua', 'the', 'false', 'metastable', 'vacuum', 'appears', 'as', 'a', 'result', 'of', 'an', 'phenomenological', 'adhoc', 'soft', 'breaking', 'term', 'linear', 'in', 'a_z', 'which', 'explicitely', 'breaks', 'that', 'degeneracy', 'in', 'this', 'paper', 'we', 'discuss', 'a', 'possible', 'dynamical', 'origin', 'for', 'this', 'soft', 'breaking', 'term', 'as', 'coming', 'from', 'the', 'alignment', 'of', 'the', 'vacuum', 'along', 'a', 'direction', 'in', 'which', 'the', 'condensate', 'of', 'the', 'shadow', 'fermions', 'barpsiz_i', 'i', 'gamma_5', 'psiz_i', 'which', 'breaks', 'spontaneously', 'both', 'p', 'and', 'cp', 'is', 'nonvanishing', 'the', 'present', 'universe', 'lives', 'in', 'a', 'vacuum', 'which', 'violates', 'both', 'p', 'and', 'cp', 'in', 'the', 'shadow', 'su2_z', 'sector']] | [-0.18482294775227584, 0.22190503867102784, -0.0641163043144, 0.10015998443974773, -0.06510800544297458, -0.1281184144878885, 0.02392036589245857, 0.2750105253965935, -0.22894346622591158, -0.2932095421739377, 0.06736693277823023, -0.23948400403747744, -0.07233096099538137, 0.08337163904727232, -0.0005054297287687204, -0.0033049583236300726, -0.046952757916254244, 0.042582812769446386, -0.038971572176328996, -0.19918905063844627, 0.3160914238286773, 0.054717854204837504, 0.2179746750299251, 0.06567903089325694, 0.09447397217552019, -0.021211243654805714, 0.04388209943739107, -0.030900985860015925, -0.11531605487626377, 0.04399038722104018, 0.16291894794657555, 0.05519646897389576, 0.21154653635898196, -0.3794829351188638, -0.1938742860554002, 0.15406433424753388, 0.1406822365129412, 0.13237240848560228, -0.08647384571490764, -0.30934375021450516, 0.05391767428529153, -0.20345862765751052, -0.18032880874830526, -0.03896220155010957, 0.005360599589482994, -0.11164811571560256, -0.28571773417990876, 0.12993107715241112, -0.0025009662404488885, -0.01578567239949934, -0.052265609458384175, -0.09375944686556667, -0.03279537389696598, -0.0049201900071305475, 0.16906896856806536, 0.08158945429377348, 0.11324586275760538, -0.18988487909962537, -0.09301324444042132, 0.42848898289248166, -0.1261698568442825, -0.14839248429052532, 0.10976315942229475, -0.12407537715554964, -0.1468038067360772, 0.15451438567975945, 0.09363743605478327, 0.10488653097375546, -0.1256940097224376, 0.1838395891040042, -0.031735642933820536, 0.1726729085558185, 0.07496293047130699, 0.031252065222361125, 0.28588519780328725, 0.13693667984306357, 0.047200460177164796, 0.08489360289134244, -0.06610665613467373, -0.09435411285440062, -0.3981358406656399, -0.14483904389369234, -0.14449285957486677, 0.07747361887950541, -0.09490386335581695, -0.14399783354729595, 0.3820425438149491, 0.09141722332300027, 0.21577921621047141, -0.0006668697233402692, 0.2674836214126383, 0.0847058368068779, 0.06258020665292151, 0.026160049805184826, 0.30056353574817457, 0.0895752247689837, 0.09966844184290073, -0.23543266419011805, -0.034537570825749556, 0.04023681614383283] |
707.2792 | Distributed Compression and Multiparty Squashed Entanglement | We study a protocol in which many parties use quantum communication to
transfer a shared state to a receiver without communicating with each other.
This protocol is a multiparty version of the fully quantum Slepian-Wolf
protocol for two senders and arises through the repeated application of the
two-sender protocol. We describe bounds on the achievable rate region for the
distributed compression problem. The inner bound arises by expressing the
achievable rate region for our protocol in terms of its vertices and extreme
rays and, equivalently, in terms of facet inequalities. We also prove an outer
bound on all possible rates for distributed compression based on the multiparty
squashed entanglement, a measure of multiparty entanglement.
| quant-ph cs.IT math.IT | we study a protocol in which many parties use quantum communication to transfer a shared state to a receiver without communicating with each other this protocol is a multiparty version of the fully quantum slepianwolf protocol for two senders and arises through the repeated application of the twosender protocol we describe bounds on the achievable rate region for the distributed compression problem the inner bound arises by expressing the achievable rate region for our protocol in terms of its vertices and extreme rays and equivalently in terms of facet inequalities we also prove an outer bound on all possible rates for distributed compression based on the multiparty squashed entanglement a measure of multiparty entanglement | [['we', 'study', 'a', 'protocol', 'in', 'which', 'many', 'parties', 'use', 'quantum', 'communication', 'to', 'transfer', 'a', 'shared', 'state', 'to', 'a', 'receiver', 'without', 'communicating', 'with', 'each', 'other', 'this', 'protocol', 'is', 'a', 'multiparty', 'version', 'of', 'the', 'fully', 'quantum', 'slepianwolf', 'protocol', 'for', 'two', 'senders', 'and', 'arises', 'through', 'the', 'repeated', 'application', 'of', 'the', 'twosender', 'protocol', 'we', 'describe', 'bounds', 'on', 'the', 'achievable', 'rate', 'region', 'for', 'the', 'distributed', 'compression', 'problem', 'the', 'inner', 'bound', 'arises', 'by', 'expressing', 'the', 'achievable', 'rate', 'region', 'for', 'our', 'protocol', 'in', 'terms', 'of', 'its', 'vertices', 'and', 'extreme', 'rays', 'and', 'equivalently', 'in', 'terms', 'of', 'facet', 'inequalities', 'we', 'also', 'prove', 'an', 'outer', 'bound', 'on', 'all', 'possible', 'rates', 'for', 'distributed', 'compression', 'based', 'on', 'the', 'multiparty', 'squashed', 'entanglement', 'a', 'measure', 'of', 'multiparty', 'entanglement']] | [-0.22760893152250597, 0.08147938786548861, -0.06227472472707169, 0.03491022682078836, 0.030336313378555996, -0.2403125097370592, 0.13693425003970205, 0.3445664504216167, -0.2919359128562766, -0.2584238420158886, 0.0956844333692029, -0.2371123404152234, -0.08932877554284539, 0.22552192484012298, -0.10480613039710493, 0.08954673061063595, 0.045073142626502534, 0.06763447251317925, -0.03827016121807933, -0.27479171798883106, 0.3240270526904057, 0.050688293842157645, 0.30035359877071816, 0.08950063414573506, 0.09641434806868793, 0.0673315208977121, 0.006789741261551778, -0.06547439159425139, -0.1471608378250446, 0.16302812716968587, 0.2739458355006942, 0.20788086201840392, 0.24799985274378405, -0.39104875796392824, -0.18137631934593645, 0.12053395056966365, 0.14164270909110965, 0.13555801535135528, -0.037575647146073414, -0.2861666068814597, 0.05575762604150856, -0.23847916707592576, -0.05154988478068589, 0.02181181784621195, -0.04849440234268019, -0.022832767484431856, -0.29813555059464353, 0.07922854070861113, 0.05533538532663921, 0.02793553807433662, -0.008408373745623976, -0.0037931599245782485, 0.056536130176187215, 0.1528166620277293, -0.047932597851429726, -0.0007958455335986065, 0.13026847901116861, -0.11709536334066734, -0.18927748431860095, 0.3231797880828054, -0.025339841752786908, -0.1881412368864148, 0.15342361476934074, -0.08261184609523696, -0.12206482435494923, 0.050550776509274, 0.18685862248387644, 0.13997572584061377, -0.13702986670429246, 0.058775428752517, -0.07566419200514231, 0.19123500023698925, 0.08953954208960854, 0.1522945658663255, 0.12404912133423383, 0.08333778212239083, 0.15662694391906834, 0.2199356132355445, -0.05890607439275635, -0.18571117944686608, -0.3115573185904507, -0.22400847813134947, -0.22988472075156638, 0.02267507317663873, -0.1352272053988775, -0.09362436824768226, 0.33703469850220963, 0.0829889292077145, 0.16347357967312923, 0.07984782258771654, 0.3478254848813409, 0.06442317613829418, 0.02077780945508398, 0.1619771073466134, 0.22722534623340165, 0.13032097948037022, 0.05611199054768995, -0.20885500634993373, 0.12688153690511458, 0.07429173042213447] |
707.2793 | Detection of circumstellar material in a normal Type Ia Supernova | Type Ia supernovae are thought to be thermonuclear explosions of accreting
white dwarfs that reach a critical mass limit. Despite their importance as
cosmological distance indicators, the nature of their progenitors has remained
controversial. Here we report the detection of circumstellar material in a
normal Type Ia supernova. The expansion velocities, densities and dimensions of
the circumstellar envelope indicate that this material was ejected from the
progenitor system. The relatively low expansion velocities appear to favor a
progenitor system where a white dwarf accretes material from a companion star
which is in the red-giant phase at the time of explosion.
| astro-ph | type ia supernovae are thought to be thermonuclear explosions of accreting white dwarfs that reach a critical mass limit despite their importance as cosmological distance indicators the nature of their progenitors has remained controversial here we report the detection of circumstellar material in a normal type ia supernova the expansion velocities densities and dimensions of the circumstellar envelope indicate that this material was ejected from the progenitor system the relatively low expansion velocities appear to favor a progenitor system where a white dwarf accretes material from a companion star which is in the redgiant phase at the time of explosion | [['type', 'ia', 'supernovae', 'are', 'thought', 'to', 'be', 'thermonuclear', 'explosions', 'of', 'accreting', 'white', 'dwarfs', 'that', 'reach', 'a', 'critical', 'mass', 'limit', 'despite', 'their', 'importance', 'as', 'cosmological', 'distance', 'indicators', 'the', 'nature', 'of', 'their', 'progenitors', 'has', 'remained', 'controversial', 'here', 'we', 'report', 'the', 'detection', 'of', 'circumstellar', 'material', 'in', 'a', 'normal', 'type', 'ia', 'supernova', 'the', 'expansion', 'velocities', 'densities', 'and', 'dimensions', 'of', 'the', 'circumstellar', 'envelope', 'indicate', 'that', 'this', 'material', 'was', 'ejected', 'from', 'the', 'progenitor', 'system', 'the', 'relatively', 'low', 'expansion', 'velocities', 'appear', 'to', 'favor', 'a', 'progenitor', 'system', 'where', 'a', 'white', 'dwarf', 'accretes', 'material', 'from', 'a', 'companion', 'star', 'which', 'is', 'in', 'the', 'redgiant', 'phase', 'at', 'the', 'time', 'of', 'explosion']] | [-0.09711613143794239, 0.14276022461242974, -0.08440279555972666, 0.07842872362583876, -0.1780954860773636, -0.07555315655190498, 0.10431897986680269, 0.370984699241817, -0.1814892605924979, -0.266423334274441, 0.08052001277217641, -0.28416664239019157, -0.036594612547196446, 0.1846951160673052, -0.08217370956444939, -0.07978415929712356, 0.16520120911300182, -0.03210031917900778, -0.13864461821038276, -0.3097864320874214, 0.35607543246820567, 0.05627263127826154, 0.12189045024570078, -0.07895801710197702, 0.0618667163932696, -0.21929636831860988, 0.0014065057039260864, -0.11414891324471682, -0.15804079403707874, -0.028107682238332928, 0.22803861902284553, 0.13179787872359155, 0.22229521112516523, -0.36242872959002853, -0.3285266351606697, 0.06766429213806986, 0.23064411642146296, 0.07900172792258672, -0.11389850822743028, -0.2589666850492358, 0.06807218397967517, -0.28783924713730813, -0.1847273642383516, 0.10910230968147516, 0.06632191398181021, 0.05753313057590276, -0.19828721409197897, 0.16286928460001945, 0.06845683446153998, 0.03122870609979145, -0.11626527565065771, -0.0870284290984273, -0.04712345194537192, 0.03172829702496529, 0.06981235753861256, 0.02353294019587338, 0.1250272328182473, -0.1645485654543154, 0.07414492317475378, 0.45743022818234746, -0.042944538365118204, 0.04582221026299521, 0.276946885320358, -0.18665277308318765, -0.103526891162619, 0.1500141538400203, 0.17068703039432875, 0.12922511397395284, -0.18597747191786765, -0.04216207913850667, 0.02844942543655634, 0.1390236135572195, 0.04664711577352136, 0.09033117885563115, 0.39632390504702925, 0.19021351693896577, -0.03536764812655747, 0.03617459862376563, -0.22461950340308248, -0.004297940297983587, -0.2358194062486291, -0.12687986651377287, -0.2107572271116078, 0.18439353439141995, -0.12802779839592404, -0.18398006320465357, 0.29592057497240604, 0.09770419037668035, 0.2105446113529615, -0.04507335628732108, 0.24745157864759676, 0.0634404425683897, 0.07208419628906995, 0.13418668732512742, 0.3620831914246082, 0.24495819797739388, 0.15268102380912751, -0.2421799731813371, 0.1526439036807278, 0.05975588321685791] |
707.2794 | Nonadiabatic charged spherical gravitational collapse | We present a complete set of the equations and matching conditions required
for the description of physically meaningful charged, dissipative, spherically
symmetric gravitational collapse with shear. Dissipation is described with both
free-streaming and diffusion approximations. The effects of viscosity are also
taken into account. The roles of different terms in the dynamical equation are
analyzed in detail. The dynamical equation is coupled to a causal transport
equation in the context of Israel-Stewart theory. The decrease of the inertial
mass density of the fluid, by a factor which depends on its internal
thermodynamic state, is reobtained, with the viscosity terms included. In
accordance with the equivalence principle, the same decrease factor is obtained
for the gravitational force term. The effect of the electric charge on the
relation between the Weyl tensor and the inhomogeneity of energy density is
discussed.
| gr-qc astro-ph | we present a complete set of the equations and matching conditions required for the description of physically meaningful charged dissipative spherically symmetric gravitational collapse with shear dissipation is described with both freestreaming and diffusion approximations the effects of viscosity are also taken into account the roles of different terms in the dynamical equation are analyzed in detail the dynamical equation is coupled to a causal transport equation in the context of israelstewart theory the decrease of the inertial mass density of the fluid by a factor which depends on its internal thermodynamic state is reobtained with the viscosity terms included in accordance with the equivalence principle the same decrease factor is obtained for the gravitational force term the effect of the electric charge on the relation between the weyl tensor and the inhomogeneity of energy density is discussed | [['we', 'present', 'a', 'complete', 'set', 'of', 'the', 'equations', 'and', 'matching', 'conditions', 'required', 'for', 'the', 'description', 'of', 'physically', 'meaningful', 'charged', 'dissipative', 'spherically', 'symmetric', 'gravitational', 'collapse', 'with', 'shear', 'dissipation', 'is', 'described', 'with', 'both', 'freestreaming', 'and', 'diffusion', 'approximations', 'the', 'effects', 'of', 'viscosity', 'are', 'also', 'taken', 'into', 'account', 'the', 'roles', 'of', 'different', 'terms', 'in', 'the', 'dynamical', 'equation', 'are', 'analyzed', 'in', 'detail', 'the', 'dynamical', 'equation', 'is', 'coupled', 'to', 'a', 'causal', 'transport', 'equation', 'in', 'the', 'context', 'of', 'israelstewart', 'theory', 'the', 'decrease', 'of', 'the', 'inertial', 'mass', 'density', 'of', 'the', 'fluid', 'by', 'a', 'factor', 'which', 'depends', 'on', 'its', 'internal', 'thermodynamic', 'state', 'is', 'reobtained', 'with', 'the', 'viscosity', 'terms', 'included', 'in', 'accordance', 'with', 'the', 'equivalence', 'principle', 'the', 'same', 'decrease', 'factor', 'is', 'obtained', 'for', 'the', 'gravitational', 'force', 'term', 'the', 'effect', 'of', 'the', 'electric', 'charge', 'on', 'the', 'relation', 'between', 'the', 'weyl', 'tensor', 'and', 'the', 'inhomogeneity', 'of', 'energy', 'density', 'is', 'discussed']] | [-0.16604239614241742, 0.15985489336341835, -0.08317897686113913, 0.05782023806081059, -0.045525822796069246, -0.04990834909815179, -0.04282143823313189, 0.2582088053104994, -0.2557625303659048, -0.2957532899690441, 0.038438102698621704, -0.2656362725867201, -0.08979084454746782, 0.1372631549484272, 0.019759255697599787, 0.03412954802110292, 0.018951472145525495, 0.06340887867238211, -0.09254830586892701, -0.20208072202091198, 0.36343770451924723, 0.07009620132410656, 0.2796086909711712, 0.08033892644258837, 0.11746437893842981, -0.01569707119294132, -0.050195777387209775, 0.10034355676422517, -0.17952835162008263, 0.05020560880623542, 0.1793924677928073, 0.0409151826971683, 0.22557852610918708, -0.44732665188232623, -0.24871548317183834, 0.05905670896079729, 0.09020793922515451, 0.12416114692788814, -0.028245478350520672, -0.2785455639595571, 0.02568725128725603, -0.18244753760434146, -0.14357706482616672, -0.05151320549160026, 0.043344104696281145, 0.02956411882263163, -0.2624281490958917, 0.20012896551634185, 0.04826064916298914, -0.0059686979967290945, -0.14724699240700895, -0.07108627994497563, -0.06174200885773947, 0.09097515621924422, 0.08177521780295216, 0.006351272059280587, 0.15026673023501222, -0.15186332858613003, -0.03749665167128694, 0.4283143094052439, -0.08289192961630128, -0.26563601475209, 0.15806420306013763, -0.14251486895322477, -0.0674323558172994, 0.12315062837560485, 0.14155324019383694, 0.09549501685061208, -0.17125916477306274, 0.09287777556106659, -0.004266223753802478, 0.12278885103718283, 0.057694851636778614, 0.046002259747921555, 0.21462532023872263, 0.1629383511017954, 0.007339060832948789, 0.12507407550794492, -0.032883004261774644, -0.1371363499134347, -0.3748863206609436, -0.13661442386776046, -0.15218045957642945, 0.05425581073327719, -0.14772107324909262, -0.1685878481324492, 0.36639946704541426, 0.11896731829999582, 0.141637320596087, 0.01999075036323832, 0.27496767999347893, 0.19613963048966293, 0.032657302352532315, 0.07725651869617835, 0.3066624207911419, 0.20217332169852234, 0.10884009900273404, -0.31049961716854485, 0.053315191927865366, 0.09455205989070237] |
707.2795 | Neutron-skin thickness of finite nuclei in relativistic mean-field
models with chiral limits | We study several structure properties of finite nuclei using relativistic
mean-field Lagrangians constructed according to the Brown-Rho scaling due to
the chiral symmetry restoration at high densities. The models are consistent
with current experimental constraints for the equations of state of symmetric
matter at both normal and supra-normal densities and of asymmetric matter at
sub-saturation densities. It is shown that these models can successfully
describe the binding energies and charge radii of finite nuclei. Compared to
calculations with usual relativistic mean-field models, these models give a
reduced thickness of neutron skin in ^{208}Pb between 0.17 fm and 0.21 fm. The
reduction of the predicted neutron skin thickness is found to be due to not
only the softening of the symmetry energy but also the scaling property of
$\rho $ meson required by the partial restoration of chiral symmetry.
| nucl-th | we study several structure properties of finite nuclei using relativistic meanfield lagrangians constructed according to the brownrho scaling due to the chiral symmetry restoration at high densities the models are consistent with current experimental constraints for the equations of state of symmetric matter at both normal and supranormal densities and of asymmetric matter at subsaturation densities it is shown that these models can successfully describe the binding energies and charge radii of finite nuclei compared to calculations with usual relativistic meanfield models these models give a reduced thickness of neutron skin in 208pb between 017 fm and 021 fm the reduction of the predicted neutron skin thickness is found to be due to not only the softening of the symmetry energy but also the scaling property of rho meson required by the partial restoration of chiral symmetry | [['we', 'study', 'several', 'structure', 'properties', 'of', 'finite', 'nuclei', 'using', 'relativistic', 'meanfield', 'lagrangians', 'constructed', 'according', 'to', 'the', 'brownrho', 'scaling', 'due', 'to', 'the', 'chiral', 'symmetry', 'restoration', 'at', 'high', 'densities', 'the', 'models', 'are', 'consistent', 'with', 'current', 'experimental', 'constraints', 'for', 'the', 'equations', 'of', 'state', 'of', 'symmetric', 'matter', 'at', 'both', 'normal', 'and', 'supranormal', 'densities', 'and', 'of', 'asymmetric', 'matter', 'at', 'subsaturation', 'densities', 'it', 'is', 'shown', 'that', 'these', 'models', 'can', 'successfully', 'describe', 'the', 'binding', 'energies', 'and', 'charge', 'radii', 'of', 'finite', 'nuclei', 'compared', 'to', 'calculations', 'with', 'usual', 'relativistic', 'meanfield', 'models', 'these', 'models', 'give', 'a', 'reduced', 'thickness', 'of', 'neutron', 'skin', 'in', '208pb', 'between', '017', 'fm', 'and', '021', 'fm', 'the', 'reduction', 'of', 'the', 'predicted', 'neutron', 'skin', 'thickness', 'is', 'found', 'to', 'be', 'due', 'to', 'not', 'only', 'the', 'softening', 'of', 'the', 'symmetry', 'energy', 'but', 'also', 'the', 'scaling', 'property', 'of', 'rho', 'meson', 'required', 'by', 'the', 'partial', 'restoration', 'of', 'chiral', 'symmetry']] | [-0.05494781275004502, 0.2142660992532751, -0.11191190399202335, 0.09642709294770824, -0.029006170639156423, -0.10851418501255612, 0.022676446339129096, 0.34411275968716964, -0.20972310180646658, -0.3120913973832707, 0.015512322841711805, -0.30328840683520275, -0.024791562935697717, 0.09312313951952994, 0.03695902308571513, 0.06410403673394319, -0.042946017636190145, 0.06386619003788724, -0.16673039520893546, -0.1707028539445129, 0.30572500819489906, 0.03834555546470993, 0.30712542231500584, 0.12965469651032974, 0.05037585602067139, -0.04909435614610404, 0.040127780254468, 0.01700461067612594, -0.1415820668851825, 0.057111933922571856, 0.2529279834512888, -0.01039379342275597, 0.13053363990412523, -0.45413347272487886, -0.2263304038401557, 0.07677434050702374, 0.10846420921755778, 0.14595505211971374, -0.04558986117451513, -0.29125644318949784, 0.12942806993998643, -0.22992668229488344, -0.18474347065168903, -0.11493511731144938, 0.022639667017072658, 0.03317626486370938, -0.2535008286031636, 0.1352957029991365, 0.026014266279016207, 0.030840009914396286, -0.12360588314494349, -0.19479903810569188, -0.08735984754510713, 0.026518330538822132, 0.10337455186102348, 0.02479687144293239, 0.1480964543193793, -0.17550957825605887, -0.04499787293853796, 0.43039411336292316, 0.010335487769032916, -0.14860454009995408, 0.17262910121208885, -0.16959543737929558, -0.1130500782084019, 0.16529193476019224, 0.14698975761658953, 0.10459499729008678, -0.1169371767055386, 0.05545395280125748, -0.010378863363370409, 0.1985863419326131, 0.04044531466079074, 0.014607933592935005, 0.21394881563274748, 0.17013972608141437, 0.013067254042048958, 0.046419685046242914, -0.11239797941810131, -0.09324283768545265, -0.3124406095458208, -0.029860800363286567, -0.13798158837271596, 0.03062430887330531, -0.10286332883963015, -0.10418188346300893, 0.3420665494037153, 0.10367741861659353, 0.20546646551466988, 0.02767857612470967, 0.2549700428609376, 0.13436660820441523, 0.0974622351987573, 0.042293627209363194, 0.26961764524840365, 0.24136896012860765, 0.05660979739342728, -0.3149680738395971, 0.02295829483518635, 0.053959200124725375] |
707.2796 | Random perturbations of stochastic chains with unbounded variable length
memory | We consider binary infinite order stochastic chains perturbed by a random
noise. This means that at each time step, the value assumed by the chain can be
randomly and independently flipped with a small fixed probability. We show that
the transition probabilities of the perturbed chain are uniformly close to the
corresponding transition probabilities of the original chain. As a consequence,
in the case of stochastic chains with unbounded but otherwise finite variable
length memory, we show that it is possible to recover the context tree of the
original chain, using a suitable version of the algorithm Context, provided
that the noise is small enough.
| math.PR | we consider binary infinite order stochastic chains perturbed by a random noise this means that at each time step the value assumed by the chain can be randomly and independently flipped with a small fixed probability we show that the transition probabilities of the perturbed chain are uniformly close to the corresponding transition probabilities of the original chain as a consequence in the case of stochastic chains with unbounded but otherwise finite variable length memory we show that it is possible to recover the context tree of the original chain using a suitable version of the algorithm context provided that the noise is small enough | [['we', 'consider', 'binary', 'infinite', 'order', 'stochastic', 'chains', 'perturbed', 'by', 'a', 'random', 'noise', 'this', 'means', 'that', 'at', 'each', 'time', 'step', 'the', 'value', 'assumed', 'by', 'the', 'chain', 'can', 'be', 'randomly', 'and', 'independently', 'flipped', 'with', 'a', 'small', 'fixed', 'probability', 'we', 'show', 'that', 'the', 'transition', 'probabilities', 'of', 'the', 'perturbed', 'chain', 'are', 'uniformly', 'close', 'to', 'the', 'corresponding', 'transition', 'probabilities', 'of', 'the', 'original', 'chain', 'as', 'a', 'consequence', 'in', 'the', 'case', 'of', 'stochastic', 'chains', 'with', 'unbounded', 'but', 'otherwise', 'finite', 'variable', 'length', 'memory', 'we', 'show', 'that', 'it', 'is', 'possible', 'to', 'recover', 'the', 'context', 'tree', 'of', 'the', 'original', 'chain', 'using', 'a', 'suitable', 'version', 'of', 'the', 'algorithm', 'context', 'provided', 'that', 'the', 'noise', 'is', 'small', 'enough']] | [-0.118527330259981, 0.1910474771755703, -0.025446862634271383, 0.06979968477417493, -0.028130787449134956, -0.1561028220380346, 0.0803710642980323, 0.3768070543096179, -0.323728165757798, -0.24116500260397083, 0.15555989246349783, -0.256172587243574, -0.1280354412693885, 0.11902179153015216, -0.04100061816473802, 0.05036479790828058, 0.09104695137412776, 0.11502984967969712, -0.03031205820596023, -0.25008427925807025, 0.30716762638850403, 0.07476239791583447, 0.22682466608960003, -0.06635739300843506, 0.13540265133959198, 0.04177768801649411, 0.03146642969499919, 0.056844507259804576, -0.11028010995664989, 0.06301535242902381, 0.21221480845207616, 0.054834819691521784, 0.28189094137577786, -0.4059743678219439, -0.19213854027468533, 0.15700314825045922, 0.12708907296736946, 0.18105600140988826, -0.015154079720377921, -0.2858671339350708, 0.12902149712179034, -0.16709918027876744, -0.13840101520043044, -0.019152941927313805, -0.001135074489173435, 0.07540476328382889, -0.29075809893686144, 0.036306985875680334, 0.11194750353516568, -0.0314931227692536, 0.0005291181771705548, -0.08079795065735068, -0.020265796820500066, 0.11747941982799343, 0.04863851361220614, 0.028540928899088786, 0.10234283249204358, -0.032334723188320084, -0.08574200119113638, 0.3423046980851463, -0.11406638911991779, -0.23143118483324845, 0.1623761555712138, -0.1498012695106722, -0.13122539453297144, 0.14449938830165637, 0.10842492387940486, 0.13122142826517422, -0.145696747711017, 0.10672401567599514, -0.0407876818086065, 0.19055814608221963, 0.03659370976633259, -0.005058135868360599, 0.1830841358130177, 0.14439602985068978, 0.10313234725700958, 0.2133474343844379, -0.08180475892676484, -0.15335989655716167, -0.31291097686404273, -0.12192057915741489, -0.23061877235193692, 0.049504865076215494, -0.11724451655131166, -0.1822772798882354, 0.3452893540884058, 0.15986679891859587, 0.25389606834699713, 0.1149271154421426, 0.24537558297937115, 0.17673064728289664, 0.01887378524878018, 0.07129811943020849, 0.12989285781846516, 0.11787633846314358, 0.0422133110641014, -0.18790032192177716, 0.11604650774970651, 0.08091290329716035] |
707.2797 | Outer boundary conditions for Einstein's field equations in harmonic
coordinates | We analyze Einstein's vacuum field equations in generalized harmonic
coordinates on a compact spatial domain with boundaries. We specify a class of
boundary conditions which is constraint-preserving and sufficiently general to
include recent proposals for reducing the amount of spurious reflections of
gravitational radiation. In particular, our class comprises the boundary
conditions recently proposed by Kreiss and Winicour, a geometric modification
thereof, the freezing-Psi0 boundary condition and the hierarchy of absorbing
boundary conditions introduced by Buchman and Sarbach. Using the recent
technique developed by Kreiss and Winicour based on an appropriate reduction to
a pseudo-differential first order system, we prove well posedness of the
resulting initial-boundary value problem in the frozen coefficient
approximation. In view of the theory of pseudo-differential operators it is
expected that the full nonlinear problem is also well posed. Furthermore, we
implement some of our boundary conditions numerically and study their
effectiveness in a test problem consisting of a perturbed Schwarzschild black
hole.
| gr-qc | we analyze einsteins vacuum field equations in generalized harmonic coordinates on a compact spatial domain with boundaries we specify a class of boundary conditions which is constraintpreserving and sufficiently general to include recent proposals for reducing the amount of spurious reflections of gravitational radiation in particular our class comprises the boundary conditions recently proposed by kreiss and winicour a geometric modification thereof the freezingpsi0 boundary condition and the hierarchy of absorbing boundary conditions introduced by buchman and sarbach using the recent technique developed by kreiss and winicour based on an appropriate reduction to a pseudodifferential first order system we prove well posedness of the resulting initialboundary value problem in the frozen coefficient approximation in view of the theory of pseudodifferential operators it is expected that the full nonlinear problem is also well posed furthermore we implement some of our boundary conditions numerically and study their effectiveness in a test problem consisting of a perturbed schwarzschild black hole | [['we', 'analyze', 'einsteins', 'vacuum', 'field', 'equations', 'in', 'generalized', 'harmonic', 'coordinates', 'on', 'a', 'compact', 'spatial', 'domain', 'with', 'boundaries', 'we', 'specify', 'a', 'class', 'of', 'boundary', 'conditions', 'which', 'is', 'constraintpreserving', 'and', 'sufficiently', 'general', 'to', 'include', 'recent', 'proposals', 'for', 'reducing', 'the', 'amount', 'of', 'spurious', 'reflections', 'of', 'gravitational', 'radiation', 'in', 'particular', 'our', 'class', 'comprises', 'the', 'boundary', 'conditions', 'recently', 'proposed', 'by', 'kreiss', 'and', 'winicour', 'a', 'geometric', 'modification', 'thereof', 'the', 'freezingpsi0', 'boundary', 'condition', 'and', 'the', 'hierarchy', 'of', 'absorbing', 'boundary', 'conditions', 'introduced', 'by', 'buchman', 'and', 'sarbach', 'using', 'the', 'recent', 'technique', 'developed', 'by', 'kreiss', 'and', 'winicour', 'based', 'on', 'an', 'appropriate', 'reduction', 'to', 'a', 'pseudodifferential', 'first', 'order', 'system', 'we', 'prove', 'well', 'posedness', 'of', 'the', 'resulting', 'initialboundary', 'value', 'problem', 'in', 'the', 'frozen', 'coefficient', 'approximation', 'in', 'view', 'of', 'the', 'theory', 'of', 'pseudodifferential', 'operators', 'it', 'is', 'expected', 'that', 'the', 'full', 'nonlinear', 'problem', 'is', 'also', 'well', 'posed', 'furthermore', 'we', 'implement', 'some', 'of', 'our', 'boundary', 'conditions', 'numerically', 'and', 'study', 'their', 'effectiveness', 'in', 'a', 'test', 'problem', 'consisting', 'of', 'a', 'perturbed', 'schwarzschild', 'black', 'hole']] | [-0.12826357467565686, 0.05439221716677331, -0.06799930815871519, 0.05008668334668096, -0.10336135625869083, -0.09995832937196471, 0.0012339665845502168, 0.3053111273747606, -0.23216908144501922, -0.28550376190254706, 0.16024944142853387, -0.2312724589764212, -0.15865266030558792, 0.1753600898254006, -0.1054590206163434, 0.12366275877269427, 0.04976902725861575, 0.016610620267247446, -0.09769861676016799, -0.22862226131539315, 0.4065935031976551, 0.027335224739568405, 0.24559620939768279, 0.0676573657838162, 0.12808370895427054, 0.002288876575244686, -0.013524081541571574, 0.05395913869291783, -0.1495723431896458, 0.09196868275056402, 0.2007344443640576, 0.08226240257723615, 0.2825457194987207, -0.4309472310452316, -0.2337750190606293, 0.06524818322549646, 0.07186046403904374, 0.1126736400295228, -0.049082242912845686, -0.33248299951903904, 0.08450929740837847, -0.1362866934714242, -0.18672998367438617, -0.049665055252635516, 0.012825753161450848, -0.007342469942672417, -0.30721277080309123, 0.08642762205216478, 0.08175477150302285, 0.019236697122836724, -0.13389051201430938, -0.05790911830561713, -0.006210419874733839, 0.05991147772874683, 0.03184030856638669, -0.0019549326956248246, 0.07356422088550738, -0.09367818066563743, -0.08242638118547173, 0.3565030893525825, -0.07308559990055166, -0.261927967138875, 0.16573367989025053, -0.1340733664080453, -0.10320773016876326, 0.09046090747086474, 0.1469890466412322, 0.198925651383037, -0.15942257654089004, 0.13963942826525547, -0.051934606878486916, 0.11825632971102515, 0.11956501348266521, 0.0007518996945015179, 0.14476127099269667, 0.12962998803227377, 0.09656273535727404, 0.17895921794376754, -0.03668853770553445, -0.08586701935825822, -0.3414367874009678, -0.1366122514113951, -0.15997292063175103, 0.041647583461151674, -0.09533795938421882, -0.18312716807570092, 0.36866823823537487, 0.1576503065507262, 0.1570825784956702, 0.030100387359151427, 0.23590819005860397, 0.1481790297093073, 0.020526870391152512, 0.07353779321345381, 0.2077537052647154, 0.16759259935963947, 0.12700691883443282, -0.23773398721077216, -0.014135573645874571, 0.14471042410896656] |
707.2798 | Study of B0 -> pi0 pi0, B -> pi pi0, and B -> K pi0 Decays, and Isospin
Analysis of B -> pipi Decays | We present updated measurements of the branching fractions and CP asymmetries
for B0 -> pi0 pi0, B+ -> pi+ pi0, and B+ -> K+ pi0. Based on a sample of 383 x
10^6 Upsilon(4S) -> B Bbar decays collected by the BABAR detector at the PEP-II
asymmetric-energy B factory at SLAC, we measure B(B0 -> pi0 pi0) =(1.47 +/-
0.25 +/- 0.12) x 10^-6, B(B+ -> pi+ pi0)= (5.02 +/- 0.46 +/- 0.29) x 10^-6, and
B(B+ -> K+ pi0) = (13.6 +/- 0.6 +/- 0.7) x 10^-6. We also measure the CP
asymmetries C(pi0 pi0) = -0.49 +/- 0.35 +/- 0.05, A(pi+ pi0) = 0.03 +/- 0.08
+/- 0.01, and A(K+ pi0) = 0.030 +/- 0.039 +/- 0.010. Finally, we present bounds
on the CKM angle $\alpha$ using isospin relations.
| hep-ex | we present updated measurements of the branching fractions and cp asymmetries for b0 pi0 pi0 b pi pi0 and b k pi0 based on a sample of 383 x 106 upsilon4s b bbar decays collected by the babar detector at the pepii asymmetricenergy b factory at slac we measure bb0 pi0 pi0 147 025 012 x 106 bb pi pi0 502 046 029 x 106 and bb k pi0 136 06 07 x 106 we also measure the cp asymmetries cpi0 pi0 049 035 005 api pi0 003 008 001 and ak pi0 0030 0039 0010 finally we present bounds on the ckm angle alpha using isospin relations | [['we', 'present', 'updated', 'measurements', 'of', 'the', 'branching', 'fractions', 'and', 'cp', 'asymmetries', 'for', 'b0', 'pi0', 'pi0', 'b', 'pi', 'pi0', 'and', 'b', 'k', 'pi0', 'based', 'on', 'a', 'sample', 'of', '383', 'x', '106', 'upsilon4s', 'b', 'bbar', 'decays', 'collected', 'by', 'the', 'babar', 'detector', 'at', 'the', 'pepii', 'asymmetricenergy', 'b', 'factory', 'at', 'slac', 'we', 'measure', 'bb0', 'pi0', 'pi0', '147', '025', '012', 'x', '106', 'bb', 'pi', 'pi0', '502', '046', '029', 'x', '106', 'and', 'bb', 'k', 'pi0', '136', '06', '07', 'x', '106', 'we', 'also', 'measure', 'the', 'cp', 'asymmetries', 'cpi0', 'pi0', '049', '035', '005', 'api', 'pi0', '003', '008', '001', 'and', 'ak', 'pi0', '0030', '0039', '0010', 'finally', 'we', 'present', 'bounds', 'on', 'the', 'ckm', 'angle', 'alpha', 'using', 'isospin', 'relations']] | [-0.15373895581317717, 0.2833186857506772, -0.06301871530937954, 0.027881242391418353, -0.01963450757038092, -0.16217292259908586, 0.27698086582616005, 0.25517648043302454, -0.110143292677876, -0.2275835982758865, -0.15445904694845744, -0.5935536942697156, 0.19016588917959518, 0.10680867112067606, 0.1382289181839322, 0.14576220125064393, 0.07873910360873859, -0.05716071173259836, -0.14819370292858264, -0.11658123301050548, 0.024721438474256858, -0.04642905728351847, 0.2376592327388021, 0.0418455540028479, -0.04854990298224387, -0.016446643226092385, -0.02488644745757925, -0.17380874067823462, -0.3507347558189845, -0.1055961665131639, 0.26754440615937186, 0.08383521493023836, -0.0040747908979793575, -0.17226643084784235, 0.1963713282597399, 0.1864776970278994, 0.18181157314923602, -0.19114113713954098, -0.023406155833922256, -0.48162949104384284, 0.28125612553487594, -0.21997503319833533, 0.021233141961916585, -0.012587736317208994, 0.15789099508530904, -0.23674055603528657, -0.43809935812638184, 0.1688578775983247, -0.1569454099147398, 0.17972984784674423, -0.011577786346810443, -0.42196203631818924, -0.020596927406144477, -0.1805893719265951, 0.010051660901196649, 0.3407638706636798, 0.26636711438404065, 0.07410766555118227, -0.1314256216321036, 0.41958541289041534, -0.07807143337025838, -0.08925230979315461, 0.03511216185299384, -0.3726616916072633, -0.179336714445152, 0.2921637868569624, 0.25337929724254343, 0.01757043437971342, -0.23849209523368103, 0.1433451198385245, -0.030530355653124994, 0.2610315746479781, 0.1314320172940459, 0.073922094915097, 0.16566262704703225, 0.14025063397880713, -0.05045995465262192, -0.05468145712653053, -0.27904575105286505, 0.12243141511359434, -0.3748193541356737, -0.0988005903096887, 0.05886627566591601, 0.2280964689572977, -0.14882651138909284, 0.07619262309271677, 0.24342576150617032, -0.0012857989760585756, 0.44080773500777853, -0.013556445115920435, 0.28322016483033513, 0.028734639388178343, -0.08799794296272725, 0.10681481102794826, 0.2721837674415557, 0.27412576245135306, 0.18786192321975795, -0.3008946760070171, 0.0380161814391613, -0.06074738909847269] |
707.2799 | High resolution X-ray scattering studies of structural phase transitions
in underdoped La$_{2-x}$Ba$_x$CuO$_4$ | We have studied structural phase transitions in high quality underdoped
La$_{2-x}$Ba$_x$CuO$_4$ single crystals using high resolution x-ray scattering
techniques. Critical properties associated with the continuous High Temperature
Tetragonal (HTT, $I4/mmm$) to Middle Temperature Orthorhombic (MTO, $Cmca$)
phase transition were investigated in single crystal samples with x=0.125,
0.095, and 0.08 and we find that all behavior is consistent with three
dimensional XY criticality, as expected from theory. Power law behavior in the
orthorhombic strain, 2(a-b)/(a+b), is observed over a remarkably wide
temperature range, spanning most of the MTO regime in the phase diagram. Low
temperature measurements investigating the Low Temperature Tetragonal (LTT,
$P4_{2}/ncm$) phase, below the strongly discontinuous MTO$\to$LTT phase
transition, in x=0.125 and x=0.095 samples show that the LTT phase is
characterized by relatively broad Bragg scattering, compared with that observed
at related wavevectors in the HTT phase. This shows that the LTT phase is
either an admixture of tetragonal and orthorhombic phases, or that it is
orthorhombic with very small orthorhombic strain, consistent with the ``less
orthorhombic" low temperature structure previously reported in mixed
La$_{2-x}$Sr$_{x-y}$Ba$_y$CuO$_4$ single crystals. We compare the complex
temperature-composition phase diagram for the location of structural and
superconducting phase transitions in underdoped La$_{2-x}$Ba$_x$CuO$_4$ and
find good agreement with results obtained on polycrystalline samples.
| cond-mat.supr-con | we have studied structural phase transitions in high quality underdoped la_2xba_xcuo_4 single crystals using high resolution xray scattering techniques critical properties associated with the continuous high temperature tetragonal htt i4mmm to middle temperature orthorhombic mto cmca phase transition were investigated in single crystal samples with x0125 0095 and 008 and we find that all behavior is consistent with three dimensional xy criticality as expected from theory power law behavior in the orthorhombic strain 2abab is observed over a remarkably wide temperature range spanning most of the mto regime in the phase diagram low temperature measurements investigating the low temperature tetragonal ltt p4_2ncm phase below the strongly discontinuous mtotoltt phase transition in x0125 and x0095 samples show that the ltt phase is characterized by relatively broad bragg scattering compared with that observed at related wavevectors in the htt phase this shows that the ltt phase is either an admixture of tetragonal and orthorhombic phases or that it is orthorhombic with very small orthorhombic strain consistent with the less orthorhombic low temperature structure previously reported in mixed la_2xsr_xyba_ycuo_4 single crystals we compare the complex temperaturecomposition phase diagram for the location of structural and superconducting phase transitions in underdoped la_2xba_xcuo_4 and find good agreement with results obtained on polycrystalline samples | [['we', 'have', 'studied', 'structural', 'phase', 'transitions', 'in', 'high', 'quality', 'underdoped', 'la_2xba_xcuo_4', 'single', 'crystals', 'using', 'high', 'resolution', 'xray', 'scattering', 'techniques', 'critical', 'properties', 'associated', 'with', 'the', 'continuous', 'high', 'temperature', 'tetragonal', 'htt', 'i4mmm', 'to', 'middle', 'temperature', 'orthorhombic', 'mto', 'cmca', 'phase', 'transition', 'were', 'investigated', 'in', 'single', 'crystal', 'samples', 'with', 'x0125', '0095', 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707.28 | Dielectric spectroscopy in benzophenone: The beta relaxation and its
relation to the mode-coupling Cole-Cole peak | We report a thorough characterization of the glassy dynamics of benzophenone
by broadband dielectric spectroscopy. We detect a well pronounced beta
relaxation peak developing into an excess wing with increasing temperature. A
previous analysis of results from Optical-Kerr-effect measurements on this
material within the mode coupling theory revealed a high-frequency Cole-Cole
peak. We address the question if this phenomenon also may explain the
Johari-Goldstein beta relaxation, a so far unexplained spectral feature
inherent to glass-forming matter, mainly observed in dielectric spectra. Our
results demonstrate that according to the present status of theory, both
spectral features seem not to be directly related.
| cond-mat.dis-nn cond-mat.soft | we report a thorough characterization of the glassy dynamics of benzophenone by broadband dielectric spectroscopy we detect a well pronounced beta relaxation peak developing into an excess wing with increasing temperature a previous analysis of results from opticalkerreffect measurements on this material within the mode coupling theory revealed a highfrequency colecole peak we address the question if this phenomenon also may explain the joharigoldstein beta relaxation a so far unexplained spectral feature inherent to glassforming matter mainly observed in dielectric spectra our results demonstrate that according to the present status of theory both spectral features seem not to be directly related | [['we', 'report', 'a', 'thorough', 'characterization', 'of', 'the', 'glassy', 'dynamics', 'of', 'benzophenone', 'by', 'broadband', 'dielectric', 'spectroscopy', 'we', 'detect', 'a', 'well', 'pronounced', 'beta', 'relaxation', 'peak', 'developing', 'into', 'an', 'excess', 'wing', 'with', 'increasing', 'temperature', 'a', 'previous', 'analysis', 'of', 'results', 'from', 'opticalkerreffect', 'measurements', 'on', 'this', 'material', 'within', 'the', 'mode', 'coupling', 'theory', 'revealed', 'a', 'highfrequency', 'colecole', 'peak', 'we', 'address', 'the', 'question', 'if', 'this', 'phenomenon', 'also', 'may', 'explain', 'the', 'joharigoldstein', 'beta', 'relaxation', 'a', 'so', 'far', 'unexplained', 'spectral', 'feature', 'inherent', 'to', 'glassforming', 'matter', 'mainly', 'observed', 'in', 'dielectric', 'spectra', 'our', 'results', 'demonstrate', 'that', 'according', 'to', 'the', 'present', 'status', 'of', 'theory', 'both', 'spectral', 'features', 'seem', 'not', 'to', 'be', 'directly', 'related']] | [-0.06517204944771947, 0.1309991556314344, -0.1262038129195571, 0.030859393540304154, -0.08623319184407592, -0.13219742172863336, 0.066523533212021, 0.41078192692250015, -0.27317404258530587, -0.296449294812046, 0.06333919203723781, -0.29202921958640216, -0.1980447492096573, 0.16494676487520338, -0.026643027582904325, 0.010926622655242682, 0.008913294738158583, -0.03271503447089344, -0.035028064257930966, -0.12564943986246363, 0.2419791396241635, 0.07938545630226145, 0.2807835989817977, 0.11349399654893205, 0.012254698926117271, -0.03626004016492516, -0.02473459891974926, 0.02866314628488908, -0.16534981462442375, 0.051205970817245546, 0.25615494698286057, 0.0352102438127622, 0.24665071145631373, -0.39572126290760934, -0.25434553519124165, 0.06419314013794064, 0.16125388512620703, 0.07498762890230865, -0.06959272474632598, -0.24839169156795834, 0.019159118835814296, -0.11105909773614257, -0.15564309794455766, -0.09322731953114272, -0.01323430148884654, -0.019395883983233945, -0.20421449843328446, 0.10816148587240605, 0.08096657058806159, 0.07439755526953377, -0.11711819122545421, -0.10981465927325189, 0.041237700660713014, 0.029440481183119118, 0.08675927886855789, -0.0063923131406772886, 0.16942053711507468, -0.0942101683979854, -0.10065743783954531, 0.34746142661198975, -0.10028526027686895, -0.061729437578906074, 0.19048049946897663, -0.21927635724190622, -0.1435975429858081, 0.1731877848226577, 0.12639226500410586, 0.10466633452335372, -0.16333149561658503, 0.01052336833672598, -0.01975012009497732, 0.25276296723634006, 0.011291742317844182, 0.07415848516975529, 0.24935895735397934, 0.19874619816429914, -0.03361491401214153, 0.1493450136471074, -0.1130490764300339, -0.03698050729930401, -0.24995282378047703, -0.09893118207342923, -0.18481281041254988, 0.07131855469095172, -0.0358666077349335, -0.16676973185734822, 0.4184379083663225, 0.13763819258776494, 0.24092037255410104, 0.03462069567060098, 0.2728065759735182, 0.10829656382557004, 0.07327093437314033, 0.02000902223633602, 0.29974739138968287, 0.15562557081691922, 0.1480286422977224, -0.2962024427042343, 0.06472364250570535, -0.03948210424743593] |
707.2801 | Testing Chameleon Theories with Light Propagating through a Magnetic
Field | It was recently argued that the observed PVLAS anomaly can be explained by
chameleon field theories in which large deviations from Newton's law can be
avoided. Here we present the predictions for the dichroism and the
birefringence induced in the vacuum by a magnetic field in these models. We
show that chameleon particles behave very differently from standard axion-like
particles (ALPs). We find that, unlike ALPs, the chameleon particles are
confined within the experimental set-up. As a consequence, the birefringence is
always bigger than the dichroism in PVLAS-type experiments.
| hep-ph astro-ph gr-qc hep-th | it was recently argued that the observed pvlas anomaly can be explained by chameleon field theories in which large deviations from newtons law can be avoided here we present the predictions for the dichroism and the birefringence induced in the vacuum by a magnetic field in these models we show that chameleon particles behave very differently from standard axionlike particles alps we find that unlike alps the chameleon particles are confined within the experimental setup as a consequence the birefringence is always bigger than the dichroism in pvlastype experiments | [['it', 'was', 'recently', 'argued', 'that', 'the', 'observed', 'pvlas', 'anomaly', 'can', 'be', 'explained', 'by', 'chameleon', 'field', 'theories', 'in', 'which', 'large', 'deviations', 'from', 'newtons', 'law', 'can', 'be', 'avoided', 'here', 'we', 'present', 'the', 'predictions', 'for', 'the', 'dichroism', 'and', 'the', 'birefringence', 'induced', 'in', 'the', 'vacuum', 'by', 'a', 'magnetic', 'field', 'in', 'these', 'models', 'we', 'show', 'that', 'chameleon', 'particles', 'behave', 'very', 'differently', 'from', 'standard', 'axionlike', 'particles', 'alps', 'we', 'find', 'that', 'unlike', 'alps', 'the', 'chameleon', 'particles', 'are', 'confined', 'within', 'the', 'experimental', 'setup', 'as', 'a', 'consequence', 'the', 'birefringence', 'is', 'always', 'bigger', 'than', 'the', 'dichroism', 'in', 'pvlastype', 'experiments']] | [-0.09319068225291134, 0.28815115680812264, -0.10407821680895392, 0.1275887459222841, -0.0873503004920415, -0.1398337929911742, -0.041439315761884, 0.3679994192313064, -0.2163993251742795, -0.36646978646008804, 0.002947176923044026, -0.2541765462056818, -0.1630541100960479, 0.2018969140692868, 0.001082026370568201, 0.005112917634753764, 0.007396519289944659, 0.020916772696761076, 0.03412327579677698, -0.19917839279250157, 0.24115844849835744, 0.0827624771177811, 0.24622083695033903, 0.032675383663775974, 0.056565349503547295, -0.03675846272910183, 0.07704005213136869, 0.13015913869127294, -0.08107713606618332, 0.02591437978712334, 0.1598290852554204, 0.061680757578208366, 0.15524422106417743, -0.45618935240517283, -0.23228066286537796, 0.1374844491682862, 0.1341292195366722, 0.15247900212919127, -0.12926363616266331, -0.32806941521862015, 0.03523108385376294, -0.13812744325365534, -0.11466766296970574, -0.06552006132816049, -0.037295048947932875, -0.01177960024109449, -0.2760820198190314, 0.08992624802737158, 0.011344937221358785, -0.003348242618482221, -0.05736731007081372, -0.09219752173256976, 0.057636971283831044, -0.012175663617778231, 0.1400120719838676, 0.013618622176264498, 0.1923930888826197, -0.14962037756777136, -0.14290915968277576, 0.4332020607861606, -0.16861410280084368, -0.12432371383610272, 0.16284463903072968, -0.21081265674861657, -0.12235314412232996, 0.09019517661760222, 0.1282110717570917, 0.1307563880880645, -0.1175395918756046, 0.13803437559016113, -0.09053816864351658, 0.17889925972981888, 0.10483423667028546, -0.015403166291600262, 0.30944111667419993, 0.10112203138256022, 0.005230526937256483, 0.11590621286516332, -0.07827055573844435, -0.057243810791987926, -0.3233749776739966, -0.14854879449756647, -0.18511919188313186, 0.05176630708791146, -0.08093909136087776, -0.11748768643222073, 0.3087305909932845, 0.1970378766841763, 0.1679128029235554, -0.007741462303039787, 0.2742520516992293, 0.07763689195350955, 0.1542336294872009, 0.03406358605240133, 0.4441541272218191, 0.09478738325626844, 0.11828531222206286, -0.2223097839265723, 0.022228347698480568, 0.01797878657287749] |
707.2802 | Determination of the mass of the neutron star in SMC X-1, LMC X-4 and
Cen X-3 with VLT/UVES | We present the results of a spectroscopic monitoring campaign of the OB-star
companions to the eclipsing X-ray pulsars SMC X-1, LMC X-4 and Cen X-3.
High-resolution optical spectra obtained with UVES on the ESO Very Large
Telescope are used to determine the radial-velocity orbit of the OB
(super)giants with high precision. The excellent quality of the spectra
provides the opportunity to measure the radial-velocity curve based on
individual lines, and to study the effect of possible distortions of the line
profiles due to e.g. X-ray heating on the derived radial-velocity amplitude.
Several spectral lines show intrinsic variations with orbital phase. The
magnitude of these variations depends on line strength, and thus provides a
criterion to select lines that do not suffer from distortions. The undistorted
lines show a larger radial-velocity amplitude than the distorted lines,
consistent with model predictions. Application of our line-selection criteria
results in a mean radial-velocity amplitude K(Opt) of 20.2 +/- 1.1, 35.1 +/-
1.5, and 27.5 +/- 2.3 km/s (1 sigma errors), for the OB companion to SMC X-1,
LMC X-4 and Cen X-3, respectively. Adding information on the projected
rotational velocity of the OB companion (derived from our spectra), the
duration of X-ray eclipse and orbital parameters of the X-ray pulsar (obtained
from literature), we arrive at a neutron star mass of 1.06^{+0.11}_{-0.10},
1.25^{+0.11}_{-0.10} and 1.34^{+0.16}_{-0.14} M{sun} for SMC X-1, LMC X-4 and
Cen X-3, respectively. The mass of SMC X-1 is near the minimum mass (~1 M{sun})
expected for a neutron star produced in a supernova. We discuss the
implications of the measured mass distribution on the neutron-star formation
mechanism, in relation to the evolutionary history of the massive binaries.
| astro-ph | we present the results of a spectroscopic monitoring campaign of the obstar companions to the eclipsing xray pulsars smc x1 lmc x4 and cen x3 highresolution optical spectra obtained with uves on the eso very large telescope are used to determine the radialvelocity orbit of the ob supergiants with high precision the excellent quality of the spectra provides the opportunity to measure the radialvelocity curve based on individual lines and to study the effect of possible distortions of the line profiles due to eg xray heating on the derived radialvelocity amplitude several spectral lines show intrinsic variations with orbital phase the magnitude of these variations depends on line strength and thus provides a criterion to select lines that do not suffer from distortions the undistorted lines show a larger radialvelocity amplitude than the distorted lines consistent with model predictions application of our lineselection criteria results in a mean radialvelocity amplitude kopt of 202 11 351 15 and 275 23 kms 1 sigma errors for the ob companion to smc x1 lmc x4 and cen x3 respectively adding information on the projected rotational velocity of the ob companion derived from our spectra the duration of xray eclipse and orbital parameters of the xray pulsar obtained from literature we arrive at a neutron star mass of 106011_010 125011_010 and 134016_014 msun for smc x1 lmc x4 and cen x3 respectively the mass of smc x1 is near the minimum mass 1 msun expected for a neutron star produced in a supernova we discuss the implications of the measured mass distribution on the neutronstar formation mechanism in relation to the evolutionary history of the massive binaries | [['we', 'present', 'the', 'results', 'of', 'a', 'spectroscopic', 'monitoring', 'campaign', 'of', 'the', 'obstar', 'companions', 'to', 'the', 'eclipsing', 'xray', 'pulsars', 'smc', 'x1', 'lmc', 'x4', 'and', 'cen', 'x3', 'highresolution', 'optical', 'spectra', 'obtained', 'with', 'uves', 'on', 'the', 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'model', 'predictions', 'application', 'of', 'our', 'lineselection', 'criteria', 'results', 'in', 'a', 'mean', 'radialvelocity', 'amplitude', 'kopt', 'of', '202', '11', '351', '15', 'and', '275', '23', 'kms', '1', 'sigma', 'errors', 'for', 'the', 'ob', 'companion', 'to', 'smc', 'x1', 'lmc', 'x4', 'and', 'cen', 'x3', 'respectively', 'adding', 'information', 'on', 'the', 'projected', 'rotational', 'velocity', 'of', 'the', 'ob', 'companion', 'derived', 'from', 'our', 'spectra', 'the', 'duration', 'of', 'xray', 'eclipse', 'and', 'orbital', 'parameters', 'of', 'the', 'xray', 'pulsar', 'obtained', 'from', 'literature', 'we', 'arrive', 'at', 'a', 'neutron', 'star', 'mass', 'of', '106011_010', '125011_010', 'and', '134016_014', 'msun', 'for', 'smc', 'x1', 'lmc', 'x4', 'and', 'cen', 'x3', 'respectively', 'the', 'mass', 'of', 'smc', 'x1', 'is', 'near', 'the', 'minimum', 'mass', '1', 'msun', 'expected', 'for', 'a', 'neutron', 'star', 'produced', 'in', 'a', 'supernova', 'we', 'discuss', 'the', 'implications', 'of', 'the', 'measured', 'mass', 'distribution', 'on', 'the', 'neutronstar', 'formation', 'mechanism', 'in', 'relation', 'to', 'the', 'evolutionary', 'history', 'of', 'the', 'massive', 'binaries']] | [-0.09990673212916157, 0.06401365942262861, -0.08317458002177175, 0.10360460757532375, -0.12375258973567681, -0.08059014395384817, 0.1365421563655235, 0.42045522483193826, -0.17118870047419626, -0.352900893562456, 0.07380212273069599, -0.3194886505029071, -0.00685133670238591, 0.2547640437982997, -0.060744375080479564, -0.014901925787177339, 0.1560572435080548, -0.04017549977710533, -0.08663733013352504, -0.2656691273657383, 0.25947252910958124, 0.03328497101964782, 0.12406679916933012, -0.050052143436454956, 0.06878396439913823, -0.0474487471527967, -0.05651762318316168, -0.05438351725335458, -0.1638605281665238, 0.08308240638346477, 0.18102371054217886, 0.10970720333795039, 0.13326477972949857, -0.28236253056882926, -0.18578555607531205, 0.03822630592431444, 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707.2803 | Deformed strings in the Heisenberg model | We investigate solutions to the Bethe equations for the isotropic S = 1/2
Heisenberg chain involving complex, string-like rapidity configurations of
arbitrary length. Going beyond the traditional string hypothesis of undeformed
strings, we describe a general procedure to construct eigenstates including
strings with generic deformations, discuss general features of these solutions,
and provide a number of explicit examples including complete solutions for all
wavefunctions of short chains. We finally investigate some singular cases and
show from simple symmetry arguments that their contribution to zero-temperature
correlation functions vanishes.
| cond-mat.str-el cond-mat.stat-mech hep-th | we investigate solutions to the bethe equations for the isotropic s 12 heisenberg chain involving complex stringlike rapidity configurations of arbitrary length going beyond the traditional string hypothesis of undeformed strings we describe a general procedure to construct eigenstates including strings with generic deformations discuss general features of these solutions and provide a number of explicit examples including complete solutions for all wavefunctions of short chains we finally investigate some singular cases and show from simple symmetry arguments that their contribution to zerotemperature correlation functions vanishes | [['we', 'investigate', 'solutions', 'to', 'the', 'bethe', 'equations', 'for', 'the', 'isotropic', 's', '12', 'heisenberg', 'chain', 'involving', 'complex', 'stringlike', 'rapidity', 'configurations', 'of', 'arbitrary', 'length', 'going', 'beyond', 'the', 'traditional', 'string', 'hypothesis', 'of', 'undeformed', 'strings', 'we', 'describe', 'a', 'general', 'procedure', 'to', 'construct', 'eigenstates', 'including', 'strings', 'with', 'generic', 'deformations', 'discuss', 'general', 'features', 'of', 'these', 'solutions', 'and', 'provide', 'a', 'number', 'of', 'explicit', 'examples', 'including', 'complete', 'solutions', 'for', 'all', 'wavefunctions', 'of', 'short', 'chains', 'we', 'finally', 'investigate', 'some', 'singular', 'cases', 'and', 'show', 'from', 'simple', 'symmetry', 'arguments', 'that', 'their', 'contribution', 'to', 'zerotemperature', 'correlation', 'functions', 'vanishes']] | [-0.1759655264444476, 0.13523222667403345, -0.03576679654192006, 0.1690613390650427, -0.06355034509608738, -0.16043244525357042, 0.010895671542235759, 0.3365853786750069, -0.24247352542290682, -0.20805771869802198, 0.07952469813929827, -0.30470811646583296, -0.1286790319447687, 0.15350428476474834, 0.025558571057762346, 0.04449654197277025, 0.05782086674535517, 0.044019641579727126, -0.17702797070134776, -0.2197066501979608, 0.3481072311961027, -0.025631909609263287, 0.2651060209284688, 0.04333035755620966, 0.1009702397304652, 0.04201474120342281, -0.00146917934356214, 0.004578650099384229, -0.2326286294593829, 0.10467790168991616, 0.23754630409462682, 0.07102295410884328, 0.12925452907937904, -0.467463867348987, -0.18421345526829017, 0.10629956390123901, 0.1566710957261019, 0.21150214352839908, 0.022366521338564017, -0.2537863425109102, 0.08351342221938593, -0.1930346245292661, -0.2390372569207102, -0.1451521856916072, 0.04013035038681051, 0.05917353194943348, -0.21572790382603227, 0.07917250919177435, 0.07969785789244396, 0.04251173408268843, -0.0724992487697353, -0.10472773800084237, 0.028013535764414902, 0.0786495852760624, 0.0921621827515611, -0.028343241602225705, 0.07152474307330585, -0.12938212084131814, -0.14205907840690532, 0.34520058026591444, -0.016832950171001993, -0.25739263550400043, 0.18694750458911755, -0.10717649085902024, -0.1545381067201582, 0.10150207946927092, 0.12653542793529152, 0.13839028337104028, -0.12584434807040665, 0.1646888642341743, -0.020012801155707863, 0.12545556225272458, 0.08800884771301563, 0.05271732691962402, 0.19067425121618217, 0.06799057758478232, 0.028113852161643377, 0.2041731553780305, -0.019893415672921164, -0.16675611839867954, -0.3782864761387193, -0.12258501290235409, -0.10964880848904465, 0.11496947557383845, -0.12803281766198696, -0.23965184734917658, 0.4019899905421013, 0.1166298190997559, 0.21256528614998557, 0.11718606960764805, 0.17640409474585986, 0.089376190990659, 0.019729248115381355, 0.06331253086411676, 0.16335285017623052, 0.13009166940207442, 0.025507327125862587, -0.17902557662319998, -0.07710208730273989, 0.13831774405268735] |
707.2804 | Generalized kinetic equations for charge carriers in graphene | A system of generalized kinetic equations for the distribution functions of
two-dimensional Dirac fermions scattered by impurities is derived in the Born
approximation with respect to short-range impurity potential. It is proven that
the conductivity following from classical Boltzmann equation picture, where
electrons or holes have scattering amplitude reduced due chirality, is
justified except for an exponentially narrow range of chemical potential near
the conical point. When in this range, creation of infinite number of
electron-hole pairs related to quasi-relativistic nature of electrons in
graphene results in a renormalization of minimal conductivity as compared to
the Boltzmann term and logarithmic corrections in the conductivity similar to
the Kondo effect.
| cond-mat.mes-hall cond-mat.stat-mech | a system of generalized kinetic equations for the distribution functions of twodimensional dirac fermions scattered by impurities is derived in the born approximation with respect to shortrange impurity potential it is proven that the conductivity following from classical boltzmann equation picture where electrons or holes have scattering amplitude reduced due chirality is justified except for an exponentially narrow range of chemical potential near the conical point when in this range creation of infinite number of electronhole pairs related to quasirelativistic nature of electrons in graphene results in a renormalization of minimal conductivity as compared to the boltzmann term and logarithmic corrections in the conductivity similar to the kondo effect | [['a', 'system', 'of', 'generalized', 'kinetic', 'equations', 'for', 'the', 'distribution', 'functions', 'of', 'twodimensional', 'dirac', 'fermions', 'scattered', 'by', 'impurities', 'is', 'derived', 'in', 'the', 'born', 'approximation', 'with', 'respect', 'to', 'shortrange', 'impurity', 'potential', 'it', 'is', 'proven', 'that', 'the', 'conductivity', 'following', 'from', 'classical', 'boltzmann', 'equation', 'picture', 'where', 'electrons', 'or', 'holes', 'have', 'scattering', 'amplitude', 'reduced', 'due', 'chirality', 'is', 'justified', 'except', 'for', 'an', 'exponentially', 'narrow', 'range', 'of', 'chemical', 'potential', 'near', 'the', 'conical', 'point', 'when', 'in', 'this', 'range', 'creation', 'of', 'infinite', 'number', 'of', 'electronhole', 'pairs', 'related', 'to', 'quasirelativistic', 'nature', 'of', 'electrons', 'in', 'graphene', 'results', 'in', 'a', 'renormalization', 'of', 'minimal', 'conductivity', 'as', 'compared', 'to', 'the', 'boltzmann', 'term', 'and', 'logarithmic', 'corrections', 'in', 'the', 'conductivity', 'similar', 'to', 'the', 'kondo', 'effect']] | [-0.11319002032348323, 0.17139267179927545, -0.05993490901491562, 0.07988637949152072, -0.013017420362202672, -0.14466572068460765, 0.05065967149550839, 0.30724046276583244, -0.27595554258879446, -0.2528589724999887, -0.03058419424886687, -0.34951819413674806, -0.08971510017760645, 0.16252642665741915, 0.02415829198007737, 0.0613695621541744, 0.01039207517169416, -0.011100464613698081, -0.07838582441236379, -0.22185362587947774, 0.3321144902019189, 0.04592662812061095, 0.27356196975403835, 0.1228271893219202, 0.027662448324433982, 0.03901455700269328, 0.06371639291285922, 0.041726896950522216, -0.07778032764253354, 0.037174672302747264, 0.21112591046156412, -0.10526867964894536, 0.2252621742418258, -0.4368079991823216, -0.2395519122156665, 0.043184419538518155, 0.18479690798707818, 0.14596349371323755, -0.06577816104448032, -0.25467301442911594, 0.04836518906266215, -0.17271947438204918, -0.2098663886111879, -0.0525306983628746, 0.044427154162779044, 0.006612201652771562, -0.2544785097685702, 0.14581090115104725, 0.032237664736602285, -0.0015858403330139064, -0.1091846237770803, -0.12555526503160971, -0.038650890169323444, 0.0289987924494332, 0.07448689766770758, 0.036208769866188456, 0.11343589337935689, -0.17344193216336828, -0.08017420076654044, 0.42829805577532687, -0.09063266487920298, -0.20587858844787701, 0.16478162447477632, -0.1825678460556296, -0.016817861900946827, 0.19650020145911534, 0.1296264980983741, 0.09512536099112225, -0.19027157676250805, 0.14091119695606497, -0.03368665998237669, 0.11042916649710088, 0.06847264444233354, 0.07567566857510886, 0.21688038491379094, 0.1283089561930456, 0.03309808207735624, 0.118793398178174, -0.06294567034144057, -0.12199333880882744, -0.27157690671674156, -0.13735375611897593, -0.26553401789294745, 0.10222090903772127, -0.08057694859498868, -0.23255907256292915, 0.3776889664437109, 0.1492637145613884, 0.18354090151949487, -0.008198575637892846, 0.23566535692155355, 0.1939246050848993, 0.0744516383365241, 0.05666145433270193, 0.2296662376520711, 0.19006135057734855, 0.1055518987187005, -0.2841985852504576, -0.004237930884225926, 0.08769315912670225] |
707.2805 | Piezomagnetic Quantum Dots | We study the influence of deformations on magnetic ordering in quantum dots
doped with magnetic impurities. The reduction of symmetry and the associated
deformation from circular to elliptical quantum confinement lead to the
formation of piezomagnetic quantum dots. The strength of elliptical deformation
can be controlled by the gate voltage to change the magnitude of magnetization,
at a fixed number of carriers and in the absence of applied magnetic field. We
reveal a reentrant magnetic ordering with the increase of elliptical
deformation and suggest that the piezomagnetic quantum dots can be used as
nanoscale magnetic switches.
| cond-mat.mes-hall cond-mat.mtrl-sci | we study the influence of deformations on magnetic ordering in quantum dots doped with magnetic impurities the reduction of symmetry and the associated deformation from circular to elliptical quantum confinement lead to the formation of piezomagnetic quantum dots the strength of elliptical deformation can be controlled by the gate voltage to change the magnitude of magnetization at a fixed number of carriers and in the absence of applied magnetic field we reveal a reentrant magnetic ordering with the increase of elliptical deformation and suggest that the piezomagnetic quantum dots can be used as nanoscale magnetic switches | [['we', 'study', 'the', 'influence', 'of', 'deformations', 'on', 'magnetic', 'ordering', 'in', 'quantum', 'dots', 'doped', 'with', 'magnetic', 'impurities', 'the', 'reduction', 'of', 'symmetry', 'and', 'the', 'associated', 'deformation', 'from', 'circular', 'to', 'elliptical', 'quantum', 'confinement', 'lead', 'to', 'the', 'formation', 'of', 'piezomagnetic', 'quantum', 'dots', 'the', 'strength', 'of', 'elliptical', 'deformation', 'can', 'be', 'controlled', 'by', 'the', 'gate', 'voltage', 'to', 'change', 'the', 'magnitude', 'of', 'magnetization', 'at', 'a', 'fixed', 'number', 'of', 'carriers', 'and', 'in', 'the', 'absence', 'of', 'applied', 'magnetic', 'field', 'we', 'reveal', 'a', 'reentrant', 'magnetic', 'ordering', 'with', 'the', 'increase', 'of', 'elliptical', 'deformation', 'and', 'suggest', 'that', 'the', 'piezomagnetic', 'quantum', 'dots', 'can', 'be', 'used', 'as', 'nanoscale', 'magnetic', 'switches']] | [-0.180332547693979, 0.22501107175291205, -0.02877428637293633, -0.01683543380931951, -0.025961526031702913, -0.11651586450170726, 0.01115692176487452, 0.4052491795349245, -0.2689544781848478, -0.3331466658273712, 0.013086864285772512, -0.26240982487797737, -0.13436676822796775, 0.19521557806486575, -0.008749005278029168, -0.0007646281349783143, -0.045391870730478935, 0.0072605302242057706, -0.08746953669227271, -0.21341003910879408, 0.2559922722090657, -0.007656381512182027, 0.2906426410966863, 0.05367831022886094, 0.039236829742245995, 0.020934389302662264, 0.15005240414757282, 0.09598280303180218, -0.1276194096430269, 0.06583907578412133, 0.2073822145224161, -0.09515564516671778, 0.18225122625396276, -0.4946466452286889, -0.1700192355007554, 0.035118777785783095, 0.1528738379420247, 0.15800390935570854, -0.08594584870540227, -0.29228648100979626, 0.0987167018144343, -0.11440422940844049, -0.1382050999867109, -0.0705974634620361, -0.020132786093502848, 0.05697793372625407, -0.2709057251728761, 0.09991388508933596, 0.09633833466796204, 0.1177280923196425, -0.07466570506464147, -0.043827480078713656, -0.05216633048015259, 0.07487826052753614, 0.06355652108322829, 0.06541823982600665, 0.2727611864405238, -0.1339344758889638, -0.15154551770926142, 0.3381723405327648, -0.010885772062465549, -0.11701196363719646, 0.11407644537393935, -0.21436437167479502, -0.0525345788046252, 0.11913539108354598, 0.1673776569465796, 0.05913615119152382, -0.04605208863843776, 0.07269313467562218, 0.05009017162713766, 0.1455911506394235, 0.07981755794025958, 0.07114737977099139, 0.29607108259612386, 0.1371007775402783, 0.07579269830118089, 0.18070851159427548, -0.14589438843116417, -0.06976001165215469, -0.2591533085408931, -0.17939437015835816, -0.20803515615019327, 0.1438090944235834, -0.11586166261940889, -0.21111790651533133, 0.4008151633703771, 0.13840418958958858, 0.19242599435286442, -0.1173312781417432, 0.19665631475315118, 0.12227657433322747, 0.12614690642415857, -0.010778940243956944, 0.25750608074789244, 0.24522042062259666, 0.06534440814963698, -0.37715277674093767, 0.055174445961408004, -0.030274529057351174] |
707.2806 | Aromatic Features in AGN: Star-Forming Infrared Luminosity Function of
AGN Host Galaxies | We describe observations of aromatic features at 7.7 and 11.3 um in AGN of
three types including PG, 2MASS and 3CR objects. The feature has been
demonstrated to originate predominantly from star formation. Based on the
aromatic-derived star forming luminosity, we find that the far-IR emission of
AGN can be dominated by either star formation or nuclear emission; the average
contribution from star formation is around 25% at 70 and 160 um. The
star-forming infrared luminosity functions of the three types of AGN are
flatter than that of field galaxies, implying nuclear activity and star
formation tend to be enhanced together. The star-forming luminosity function is
also a function of the strength of nuclear activity from normal galaxies to the
bright quasars, with luminosity functions becoming flatter for more intense
nuclear activity. Different types of AGN show different distributions in the
level of star formation activity, with 2MASS> PG> 3CR star formation rates.
| astro-ph | we describe observations of aromatic features at 77 and 113 um in agn of three types including pg 2mass and 3cr objects the feature has been demonstrated to originate predominantly from star formation based on the aromaticderived star forming luminosity we find that the farir emission of agn can be dominated by either star formation or nuclear emission the average contribution from star formation is around 25 at 70 and 160 um the starforming infrared luminosity functions of the three types of agn are flatter than that of field galaxies implying nuclear activity and star formation tend to be enhanced together the starforming luminosity function is also a function of the strength of nuclear activity from normal galaxies to the bright quasars with luminosity functions becoming flatter for more intense nuclear activity different types of agn show different distributions in the level of star formation activity with 2mass pg 3cr star formation rates | [['we', 'describe', 'observations', 'of', 'aromatic', 'features', 'at', '77', 'and', '113', 'um', 'in', 'agn', 'of', 'three', 'types', 'including', 'pg', '2mass', 'and', '3cr', 'objects', 'the', 'feature', 'has', 'been', 'demonstrated', 'to', 'originate', 'predominantly', 'from', 'star', 'formation', 'based', 'on', 'the', 'aromaticderived', 'star', 'forming', 'luminosity', 'we', 'find', 'that', 'the', 'farir', 'emission', 'of', 'agn', 'can', 'be', 'dominated', 'by', 'either', 'star', 'formation', 'or', 'nuclear', 'emission', 'the', 'average', 'contribution', 'from', 'star', 'formation', 'is', 'around', '25', 'at', '70', 'and', '160', 'um', 'the', 'starforming', 'infrared', 'luminosity', 'functions', 'of', 'the', 'three', 'types', 'of', 'agn', 'are', 'flatter', 'than', 'that', 'of', 'field', 'galaxies', 'implying', 'nuclear', 'activity', 'and', 'star', 'formation', 'tend', 'to', 'be', 'enhanced', 'together', 'the', 'starforming', 'luminosity', 'function', 'is', 'also', 'a', 'function', 'of', 'the', 'strength', 'of', 'nuclear', 'activity', 'from', 'normal', 'galaxies', 'to', 'the', 'bright', 'quasars', 'with', 'luminosity', 'functions', 'becoming', 'flatter', 'for', 'more', 'intense', 'nuclear', 'activity', 'different', 'types', 'of', 'agn', 'show', 'different', 'distributions', 'in', 'the', 'level', 'of', 'star', 'formation', 'activity', 'with', '2mass', 'pg', '3cr', 'star', 'formation', 'rates']] | [0.02421651473253549, 0.10530172532889992, -0.06561351323647327, 0.13388624524630263, -0.08866867299596044, -0.034807265549285434, 0.0032099783052935414, 0.49630556762904715, -0.10260446195024997, -0.34945078789084955, 0.029155141096500876, -0.3401886626257022, 0.011651114503987819, 0.1655754054020355, 0.008858273295979751, -0.10242677622744323, -0.020432771753372724, -0.11302437354491926, -0.0269603151797415, -0.2622719465051839, 0.3310090478319724, 0.05734957423134658, 0.19122723448641696, -0.011516665595608126, 0.03193698298970336, -0.13118582921053626, -0.10772579744776808, -0.062024142691179326, -0.13390940641664584, 0.028266708329810125, 0.2896971381606387, 0.1318861297530882, 0.22224257591924948, -0.32682051067240536, -0.19415476918067343, 0.07974128767627438, 0.17346181952167458, 0.00027121400681177254, -0.07831280235644188, -0.2397849379478047, 0.07653771489123373, -0.20031418082745453, -0.11888915064475059, 0.10962568437925686, 0.07340417212062196, 0.07236473959576535, -0.23082634485571793, 0.16765976654144316, 0.01514287861094712, 0.12382654584699164, -0.15774832485170154, -0.09417583534837161, -0.14776238191284632, 0.03281637199841881, -0.005877155982153981, 0.13822690980592406, 0.2696916824794531, -0.1962878215065422, -0.0644799380036267, 0.37257181622063446, -0.04336227355787215, 0.07354633572609409, 0.29922574069994307, -0.24645959107070475, -0.18876029522844442, 0.19841959508822152, 0.1497765829278107, 0.1436954305176378, -0.15639924326617466, -0.07594911938710873, 0.04229779198220441, 0.22410975100080432, 0.029512021594104897, 0.13223790414753908, 0.35572201043587964, 0.11869540478494998, 0.021050589174448856, 0.13544360306083322, -0.2384244767615057, -0.037801054137832434, -0.2123907633419884, -0.026106951782773984, -0.11787263438638643, 0.12556491209512674, -0.12282200638276806, -0.07116726517836612, 0.37856993301820213, 0.025340039373412237, 0.22283643278244294, 0.047945858880044205, 0.23736619206120899, 0.09173121548979236, 0.17855452601552793, 0.14874296096815287, 0.3305556816937353, 0.15521589418609724, 0.029881273947754187, -0.28998239166991735, 0.06862784605657093, 0.0017912794995170675] |
707.2807 | Experimental Realization of Polarization Qutrits from Non-Maximally
Entangled States | Based on a recent proposal [Phys. Rev. A 71, 062337 (2005)], we have
experimentally realized two photon polarization qutrits by using non-maximally
entangled states and linear optical transformations. By this technique high
fidelity mutually unbiased qutrits are generated at a high brilliance level.
| quant-ph | based on a recent proposal phys rev a 71 062337 2005 we have experimentally realized two photon polarization qutrits by using nonmaximally entangled states and linear optical transformations by this technique high fidelity mutually unbiased qutrits are generated at a high brilliance level | [['based', 'on', 'a', 'recent', 'proposal', 'phys', 'rev', 'a', '71', '062337', '2005', 'we', 'have', 'experimentally', 'realized', 'two', 'photon', 'polarization', 'qutrits', 'by', 'using', 'nonmaximally', 'entangled', 'states', 'and', 'linear', 'optical', 'transformations', 'by', 'this', 'technique', 'high', 'fidelity', 'mutually', 'unbiased', 'qutrits', 'are', 'generated', 'at', 'a', 'high', 'brilliance', 'level']] | [-0.1012125535912457, 0.24504989312429512, 0.002554287989845588, -0.0779001192283994, 0.04807937593709323, -0.22939961088732594, 0.11289870763929295, 0.4569661129332547, -0.07925889889399211, -0.30754827424174264, 0.005410842142910475, -0.2945343231161435, -0.0778834164541747, 0.2548062102425666, -0.06820233354699753, 0.1529544063156382, 0.062067009486435426, -0.09601383993313425, -0.06434634384433073, -0.34332527894349324, 0.1975450407536257, 0.10065979972880866, 0.40575040220504716, -0.024798220888312374, 0.21567051460789072, 0.05562841416602688, 0.008834622889047577, -0.03085431365651034, -0.08113386316801466, 0.11905544889131783, 0.25456856467783273, 0.11555106271546156, 0.234748192175868, -0.3696113395549002, -0.17989062763462288, 0.07159083250111767, 0.007791221042030624, 0.18855669628828764, -0.02801934154316162, -0.3901437951163167, -0.02063395605710823, -0.24701779961053813, -0.09843655668997339, -0.19886378154513382, 0.034816334689302106, -0.05782205187937334, -0.28035311347671915, 0.15427890298001112, -0.017157298268839008, 0.09779390566317099, 0.09245583090177249, -0.015677395631514844, -0.023110328475013375, -0.09360829128750733, -0.18594392967809523, 0.05127986234826191, 0.12240216657491623, -0.017657042425569324, -0.2665952919494538, 0.21333156100341252, -0.07370175749418281, -0.198229642717966, 0.21757023309778778, -0.1296442326468726, -0.13308192756847434, 0.0914401030334245, 0.13144979454643493, 0.14397955562786333, -0.15156437923377825, 0.040696136807257845, -0.08479343682882332, 0.18123246911203578, 0.16645321829821028, 0.16114694870165772, 0.2328150728384831, 0.04272547339843143, -0.015180543857804011, 0.16579132021537848, -0.06912879612008553, -0.026658554761005298, -0.2692877354011649, -0.13525001030592693, -0.2778431430592069, 0.13663684122175687, 0.019721922431753705, 0.00011522697639607248, 0.4168818604555868, 0.07085039023132551, 0.21274046236205668, -0.05884262684377886, 0.2863261053959529, 0.13309691519299077, -0.03128144524193236, 0.1480587071162604, 0.32717915401527925, 0.1635266734353666, 0.032498392198855676, -0.1932552475703969, -0.03754836353861416, 0.030955105044302485] |
707.2808 | Synchrotron flaring behaviour of CygnusX-3 during the February-March
1994 and September 2001 outbursts | Aims: In this paper we study whether the shock-in-jet model, widely used to
explain the outbursting behaviour of quasars, can be used to explain the radio
flaring behaviour of the microquasar Cygnus X-3.
Method: We have used a method developed to model the synchrotron outbursts of
quasar jets, which decomposes multifrequency lightcurves into a series of
outbursts. The method is based on the Marscher & Gear (1985) shock model, but
we have implemented the modifications to the model suggested by Bjornsson &
Aslaksen (2000), which make the flux density increase in the initial phase less
abrupt. We study the average outburst evolution as well as specific
characteristics of individual outbursts and physical jet properties of Cyg X-3.
Results: We find that the lightcurves of the February-March 1994 and
September 2001 outbursts can be described with the modified shock model. The
average evolution shows that instead of the expected synchrotron plateau, the
flux density is still increasing during the synchrotron stage. We also find
that high frequency peaking outbursts are shorter in duration than the ones
peaking at lower frequencies. Finally, we show that the method can be used,
complementary to radio interferometric jet imaging, for deriving the physical
parameters such as the magnetic field strength and the energy density of
relativistic electrons in the jet of Cyg X-3.
| astro-ph | aims in this paper we study whether the shockinjet model widely used to explain the outbursting behaviour of quasars can be used to explain the radio flaring behaviour of the microquasar cygnus x3 method we have used a method developed to model the synchrotron outbursts of quasar jets which decomposes multifrequency lightcurves into a series of outbursts the method is based on the marscher gear 1985 shock model but we have implemented the modifications to the model suggested by bjornsson aslaksen 2000 which make the flux density increase in the initial phase less abrupt we study the average outburst evolution as well as specific characteristics of individual outbursts and physical jet properties of cyg x3 results we find that the lightcurves of the februarymarch 1994 and september 2001 outbursts can be described with the modified shock model the average evolution shows that instead of the expected synchrotron plateau the flux density is still increasing during the synchrotron stage we also find that high frequency peaking outbursts are shorter in duration than the ones peaking at lower frequencies finally we show that the method can be used complementary to radio interferometric jet imaging for deriving the physical parameters such as the magnetic field strength and the energy density of relativistic electrons in the jet of cyg x3 | [['aims', 'in', 'this', 'paper', 'we', 'study', 'whether', 'the', 'shockinjet', 'model', 'widely', 'used', 'to', 'explain', 'the', 'outbursting', 'behaviour', 'of', 'quasars', 'can', 'be', 'used', 'to', 'explain', 'the', 'radio', 'flaring', 'behaviour', 'of', 'the', 'microquasar', 'cygnus', 'x3', 'method', 'we', 'have', 'used', 'a', 'method', 'developed', 'to', 'model', 'the', 'synchrotron', 'outbursts', 'of', 'quasar', 'jets', 'which', 'decomposes', 'multifrequency', 'lightcurves', 'into', 'a', 'series', 'of', 'outbursts', 'the', 'method', 'is', 'based', 'on', 'the', 'marscher', 'gear', '1985', 'shock', 'model', 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707.2809 | Multipartite positive-partial-transpose inequalities exponentially
stronger than local reality inequalities | We show that positivity of {\it every} partial transpose of $N$-partite
quantum states implies new inequalities on Bell correlations which are stronger
than standard Bell inequalities by a factor of $2^{(N-1)/2}$. A violation of
the inequality implies the system is in a bipartite distillable entangled
state. It turns out that a family of $N$-qubit bound entangled states proposed
by D\"ur {[Phys. Rev. Lett. {\bf 87}, 230402 (2001)]} violates the inequality
for $N\geq 4$.
| quant-ph | we show that positivity of it every partial transpose of npartite quantum states implies new inequalities on bell correlations which are stronger than standard bell inequalities by a factor of 2n12 a violation of the inequality implies the system is in a bipartite distillable entangled state it turns out that a family of nqubit bound entangled states proposed by dur phys rev lett bf 87 230402 2001 violates the inequality for ngeq 4 | [['we', 'show', 'that', 'positivity', 'of', 'it', 'every', 'partial', 'transpose', 'of', 'npartite', 'quantum', 'states', 'implies', 'new', 'inequalities', 'on', 'bell', 'correlations', 'which', 'are', 'stronger', 'than', 'standard', 'bell', 'inequalities', 'by', 'a', 'factor', 'of', '2n12', 'a', 'violation', 'of', 'the', 'inequality', 'implies', 'the', 'system', 'is', 'in', 'a', 'bipartite', 'distillable', 'entangled', 'state', 'it', 'turns', 'out', 'that', 'a', 'family', 'of', 'nqubit', 'bound', 'entangled', 'states', 'proposed', 'by', 'dur', 'phys', 'rev', 'lett', 'bf', '87', '230402', '2001', 'violates', 'the', 'inequality', 'for', 'ngeq', '4']] | [-0.17454160394606322, 0.17246571289732643, -0.0506183681499264, 0.010340166947172878, 0.024313286929199956, -0.2685977617112843, 0.09923481370628595, 0.22193088276592426, -0.13469348926227126, -0.28515505997387514, 0.00022432977199707537, -0.306931503404136, -0.12679401182965055, 0.18801984544014175, -0.08967742246052582, 0.10437301292454135, 0.07635031219201852, -0.014190797086435128, -0.0839104476920648, -0.33614346091571734, 0.25449817685078674, -0.023722359931338834, 0.2943968575508398, 0.09771854390887773, 0.08802268028335825, 0.033889250686290125, 0.09299953815157283, -0.012321780244373295, -0.1521739064445097, 0.06613902258208303, 0.2167701088290738, 0.2486922169065945, 0.2732227327404161, -0.32980163032244825, -0.14988137893889047, 0.18050964457646318, 0.021157774697887162, 0.1199236659202342, 0.059159423982124926, -0.44325693992719256, -0.006173472688852312, -0.21178396323006854, -0.13756482070610915, -0.1416422383834238, 0.12782213479688723, -0.12566886708293468, -0.34854196399858556, 0.250701248524583, 0.13720983394727826, 0.0075285065311568545, 0.07183908801589621, -0.0677534855363176, -0.03299174143945518, -0.09120905233470544, -0.13947989040513664, 0.03582172065794672, 0.06330011835025164, -0.02107882689786692, -0.22607633513589837, 0.2715097180629876, 0.006335779085830301, -0.20507352577190693, 0.10710780570851257, -0.14986021877968148, -0.19446696049521026, 0.04579206750000993, 0.06779085232378686, 0.1292152026578886, -0.11342508904954852, 0.10316998116059663, -0.22745447835489496, 0.20652616802245788, 0.15842889411987304, 0.14354929824244894, 0.06032107196340006, -0.041670059466300764, 0.15690164886772223, 0.208433583200182, 0.022370864130071784, -0.12527800545300524, -0.3787294354876631, -0.28750878523744977, -0.2873802231497144, 0.20974312958703056, -0.047095942121614665, -0.02494416217485519, 0.35185370002937033, 0.042238585561615964, 0.09068239682747932, 0.008046419680284413, 0.10797604796004621, 0.07613941206762644, 0.028382737368141134, 0.197189019795201, 0.2927763563236349, 0.25276876916496516, 0.023702679833473815, -0.19174730282736152, 0.07392242407324175, 0.07997499365831585] |
707.281 | Determinant Bounds and the Matsubara UV Problem of Many-Fermion Systems | It is known that perturbation theory converges in fermionic field theory at
weak coupling if the interaction and the covariance are summable and if certain
determinants arising in the expansion can be bounded efficiently, e.g. if the
covariance admits a Gram representation with a finite Gram constant. The
covariances of the standard many--fermion systems do not fall into this class
due to the slow decay of the covariance at large Matsubara frequency, giving
rise to a UV problem in the integration over degrees of freedom with Matsubara
frequencies larger than some Omega (usually the first step in a multiscale
analysis). We show that these covariances do not have Gram representations on
any separable Hilbert space. We then prove a general bound for determinants
associated to chronological products which is stronger than the usual Gram
bound and which applies to the many--fermion case. This allows us to prove
convergence of the first integration step in a rather easy way, for a
short--range interaction which can be arbitrarily strong, provided Omega is
chosen large enough. Moreover, we give - for the first time - nonperturbative
bounds on all scales for the case of scale decompositions of the propagator
which do not impose cutoffs on the Matsubara frequency.
| math-ph cond-mat.str-el math.MP | it is known that perturbation theory converges in fermionic field theory at weak coupling if the interaction and the covariance are summable and if certain determinants arising in the expansion can be bounded efficiently eg if the covariance admits a gram representation with a finite gram constant the covariances of the standard manyfermion systems do not fall into this class due to the slow decay of the covariance at large matsubara frequency giving rise to a uv problem in the integration over degrees of freedom with matsubara frequencies larger than some omega usually the first step in a multiscale analysis we show that these covariances do not have gram representations on any separable hilbert space we then prove a general bound for determinants associated to chronological products which is stronger than the usual gram bound and which applies to the manyfermion case this allows us to prove convergence of the first integration step in a rather easy way for a shortrange interaction which can be arbitrarily strong provided omega is chosen large enough moreover we give for the first time nonperturbative bounds on all scales for the case of scale decompositions of the propagator which do not impose cutoffs on the matsubara frequency | [['it', 'is', 'known', 'that', 'perturbation', 'theory', 'converges', 'in', 'fermionic', 'field', 'theory', 'at', 'weak', 'coupling', 'if', 'the', 'interaction', 'and', 'the', 'covariance', 'are', 'summable', 'and', 'if', 'certain', 'determinants', 'arising', 'in', 'the', 'expansion', 'can', 'be', 'bounded', 'efficiently', 'eg', 'if', 'the', 'covariance', 'admits', 'a', 'gram', 'representation', 'with', 'a', 'finite', 'gram', 'constant', 'the', 'covariances', 'of', 'the', 'standard', 'manyfermion', 'systems', 'do', 'not', 'fall', 'into', 'this', 'class', 'due', 'to', 'the', 'slow', 'decay', 'of', 'the', 'covariance', 'at', 'large', 'matsubara', 'frequency', 'giving', 'rise', 'to', 'a', 'uv', 'problem', 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707.2811 | Operational Quantification of Continuous Variable Correlations | We quantify correlations (quantum and/or classical) between two continuous
variable modes in terms of how many correlated bits can be extracted by
measuring the sign of two local quadratures. On Gaussian states, such `bit
quadrature correlations' majorize entanglement, reducing to an entanglement
monotone for pure states. For non-Gaussian states, such as photonic Bell
states, ideal and real de-Gaussified photon-subtracted states, and mixtures of
pure Gaussian states, the bit correlations are shown to be a {\em monotonic}
function of the negativity. This yields a feasible, operational way to
quantitatively measure non-Gaussian entanglement in current experiments by
means of direct homodyne detection, without a full tomographical reconstruction
of the Wigner function.
| quant-ph | we quantify correlations quantum andor classical between two continuous variable modes in terms of how many correlated bits can be extracted by measuring the sign of two local quadratures on gaussian states such bit quadrature correlations majorize entanglement reducing to an entanglement monotone for pure states for nongaussian states such as photonic bell states ideal and real degaussified photonsubtracted states and mixtures of pure gaussian states the bit correlations are shown to be a em monotonic function of the negativity this yields a feasible operational way to quantitatively measure nongaussian entanglement in current experiments by means of direct homodyne detection without a full tomographical reconstruction of the wigner function | [['we', 'quantify', 'correlations', 'quantum', 'andor', 'classical', 'between', 'two', 'continuous', 'variable', 'modes', 'in', 'terms', 'of', 'how', 'many', 'correlated', 'bits', 'can', 'be', 'extracted', 'by', 'measuring', 'the', 'sign', 'of', 'two', 'local', 'quadratures', 'on', 'gaussian', 'states', 'such', 'bit', 'quadrature', 'correlations', 'majorize', 'entanglement', 'reducing', 'to', 'an', 'entanglement', 'monotone', 'for', 'pure', 'states', 'for', 'nongaussian', 'states', 'such', 'as', 'photonic', 'bell', 'states', 'ideal', 'and', 'real', 'degaussified', 'photonsubtracted', 'states', 'and', 'mixtures', 'of', 'pure', 'gaussian', 'states', 'the', 'bit', 'correlations', 'are', 'shown', 'to', 'be', 'a', 'em', 'monotonic', 'function', 'of', 'the', 'negativity', 'this', 'yields', 'a', 'feasible', 'operational', 'way', 'to', 'quantitatively', 'measure', 'nongaussian', 'entanglement', 'in', 'current', 'experiments', 'by', 'means', 'of', 'direct', 'homodyne', 'detection', 'without', 'a', 'full', 'tomographical', 'reconstruction', 'of', 'the', 'wigner', 'function']] | [-0.11692893125545105, 0.22245988246908416, -0.10366094824558961, 0.10331866180325576, 0.044515994643373843, -0.18703732132450293, 0.054328278557252176, 0.3507885050387421, -0.2773835947541515, -0.24979888645231452, 0.04015664281985731, -0.29206318573154716, -0.09665250204879483, 0.18519466410502108, -0.03127851569597874, 0.19136971439162287, 0.03969849417746545, -0.009160697686597021, -0.10111369993195894, -0.23163044636154873, 0.31111653624615127, 0.018487903108999747, 0.31881022044893254, 0.025632241834809475, 0.09036350200687526, 0.0445378961366251, -0.01547477108110255, -0.006662409487735788, -0.07011010508915973, 0.060512397180892394, 0.2870944643418792, 0.15571045395790026, 0.24038340712666784, -0.4117243274162019, -0.20552174872590587, 0.167487011547414, 0.11639199633612682, 0.14972371310251978, -0.00013554642946724224, -0.3579283970912252, -0.02435276938662138, -0.17766530638765715, -0.0936305512751051, -0.1757478836940926, 0.004800778745306195, -0.011365356769651995, -0.29865881882462686, 0.14203518151237263, 0.03139221285034074, 0.028550752515503024, 0.040808409270873175, -0.06701661261020724, -0.02197908129919013, 0.09462335378085392, -0.08566776158954573, 0.0015622035027780664, 0.1369052109631086, -0.15707632350316697, -0.19683334623771045, 0.26468575560410906, -0.08342303683844592, -0.2726198828527106, 0.15370379702546932, -0.1446986793360989, -0.05779334161550217, 0.08188630637089046, 0.10448826294939179, 0.08341347649608047, -0.10869265458794362, -0.010567860452483896, -0.021801507826723635, 0.19828090462150103, 0.10200555564690415, 0.17228244917484326, 0.20008872977432307, 0.007341361203051488, 0.0917968834668116, 0.22477716497688152, -0.07996666381870388, -0.14289768915110773, -0.3160847176225224, -0.2035244836198559, -0.2967320169288016, 0.07108666803559648, -0.08110918734519564, -0.15804815658132135, 0.4317529739367716, 0.06583221906682886, 0.16039185541459794, 0.026725687180568867, 0.2902748433749166, 0.14607945273720035, 0.014192351106972938, 0.02141441250595888, 0.23799879914320526, 0.17916015826097323, 0.013832756651377459, -0.23500558616883985, 0.10669711782007453, -0.025119328512511124] |
707.2812 | The top squark-mediated annihilation scenario and direct detection of
dark matter in compressed supersymmetry | Top squark-mediated annihilation of bino-like neutralinos to top-antitop
pairs can play the dominant role in obtaining a thermal relic dark matter
abundance in agreement with observations. In a previous paper, it was argued
that this can occur naturally in models of compressed supersymmetry, which
feature a running gluino mass parameter that is substantially smaller than the
wino mass parameter at the scale of apparent gauge coupling unification. Here I
study in some more detail the parameter space in which this is viable, and
compare to other scenarios for obtaining the observed dark matter density. I
then study the possibility of detecting the dark matter directly in future
experiments. The prospects are consistently very promising for a wide variety
of model parameters within this scenario.
| hep-ph | top squarkmediated annihilation of binolike neutralinos to topantitop pairs can play the dominant role in obtaining a thermal relic dark matter abundance in agreement with observations in a previous paper it was argued that this can occur naturally in models of compressed supersymmetry which feature a running gluino mass parameter that is substantially smaller than the wino mass parameter at the scale of apparent gauge coupling unification here i study in some more detail the parameter space in which this is viable and compare to other scenarios for obtaining the observed dark matter density i then study the possibility of detecting the dark matter directly in future experiments the prospects are consistently very promising for a wide variety of model parameters within this scenario | [['top', 'squarkmediated', 'annihilation', 'of', 'binolike', 'neutralinos', 'to', 'topantitop', 'pairs', 'can', 'play', 'the', 'dominant', 'role', 'in', 'obtaining', 'a', 'thermal', 'relic', 'dark', 'matter', 'abundance', 'in', 'agreement', 'with', 'observations', 'in', 'a', 'previous', 'paper', 'it', 'was', 'argued', 'that', 'this', 'can', 'occur', 'naturally', 'in', 'models', 'of', 'compressed', 'supersymmetry', 'which', 'feature', 'a', 'running', 'gluino', 'mass', 'parameter', 'that', 'is', 'substantially', 'smaller', 'than', 'the', 'wino', 'mass', 'parameter', 'at', 'the', 'scale', 'of', 'apparent', 'gauge', 'coupling', 'unification', 'here', 'i', 'study', 'in', 'some', 'more', 'detail', 'the', 'parameter', 'space', 'in', 'which', 'this', 'is', 'viable', 'and', 'compare', 'to', 'other', 'scenarios', 'for', 'obtaining', 'the', 'observed', 'dark', 'matter', 'density', 'i', 'then', 'study', 'the', 'possibility', 'of', 'detecting', 'the', 'dark', 'matter', 'directly', 'in', 'future', 'experiments', 'the', 'prospects', 'are', 'consistently', 'very', 'promising', 'for', 'a', 'wide', 'variety', 'of', 'model', 'parameters', 'within', 'this', 'scenario']] | [-0.10341071038572174, 0.20683555836759268, -0.08959689473868498, 0.14580894907187264, -0.0929061621624691, -0.13651301446858974, -0.0034103643199834494, 0.338664980209057, -0.2062149806203501, -0.3761307089852409, 0.03410741794692923, -0.22300221321488461, -0.04636640202314142, 0.1796233234607855, 0.026337828549120815, 0.023215061276137167, 0.05467964997965722, 0.001253340682465463, -0.04554195122252549, -0.24975505349556765, 0.30563351934805755, 0.08561685649798281, 0.2202043059364622, 0.06518353529710082, 0.005387732473712775, -0.058949350022650775, -0.029330594493301526, -0.04289141630086364, -0.13090388104730313, 0.07259359445062376, 0.2629962576746684, 0.08139188955688188, 0.17612519090987683, -0.3597093763115305, -0.24458099929864646, 0.20093657388802497, 0.19237900394270377, 0.09695800997489583, -0.12403163818265556, -0.2946364793310603, 0.08173434989247096, -0.22260492199265788, -0.10026777039315822, -0.028562256153823146, 0.00948612808039592, -0.11229075277843813, -0.2707503136142247, 0.127343186167925, -0.047453449766767485, -0.08602730077390949, -0.03239682246132889, -0.13557409305658732, -0.043068248016249026, -0.01759299170601392, 0.1124346170099377, 0.006627947860960698, 0.17841395042506197, -0.23733376449578622, -0.09190944043709146, 0.42154269300461295, -0.12467175427574999, -0.14169917369614385, 0.18205002076818697, -0.14075968361594865, -0.20094598633342334, 0.10982145032950587, 0.16352656563263265, 0.11045922707736251, -0.14394942658198548, 0.1181787478642711, -0.06773876363407791, 0.1823199454060335, 0.049354868253783116, 0.060512391647036215, 0.32254827316970597, 0.2403391137523877, 0.04856592603778887, 0.04949636315793595, -0.10361367024691595, -0.10431961552239954, -0.35588782819949333, -0.15467208153530654, -0.08897960302466902, -0.021548882830698387, -0.10134303993759057, -0.07115951507359804, 0.385757889384554, 0.19670202283023466, 0.2644737206414462, 0.012250341557627243, 0.297650647229485, 0.059452308078987465, 0.06561163345712327, 0.012562724404908236, 0.33495518962233967, 0.08554079132755438, 0.08634015683445238, -0.20335415537063514, 0.017702536150482635, -0.008601300949521828] |
707.2813 | Large time asymptotics of growth models on space-like paths I: PushASEP | We consider a new interacting particle system on the one-dimensional lattice
that interpolates between TASEP and Toom's model: A particle cannot jump to the
right if the neighboring site is occupied, and when jumping to the left it
simply pushes all the neighbors that block its way.
We prove that for flat and step initial conditions, the large time
fluctuations of the height function of the associated growth model along any
space-like path are described by the Airy_1 and Airy_2 processes. This includes
fluctuations of the height profile for a fixed time and fluctuations of a
tagged particle's trajectory as special cases.
| math-ph cond-mat.stat-mech math.MP math.PR | we consider a new interacting particle system on the onedimensional lattice that interpolates between tasep and tooms model a particle cannot jump to the right if the neighboring site is occupied and when jumping to the left it simply pushes all the neighbors that block its way we prove that for flat and step initial conditions the large time fluctuations of the height function of the associated growth model along any spacelike path are described by the airy_1 and airy_2 processes this includes fluctuations of the height profile for a fixed time and fluctuations of a tagged particles trajectory as special cases | [['we', 'consider', 'a', 'new', 'interacting', 'particle', 'system', 'on', 'the', 'onedimensional', 'lattice', 'that', 'interpolates', 'between', 'tasep', 'and', 'tooms', 'model', 'a', 'particle', 'can', 'not', 'jump', 'to', 'the', 'right', 'if', 'the', 'neighboring', 'site', 'is', 'occupied', 'and', 'when', 'jumping', 'to', 'the', 'left', 'it', 'simply', 'pushes', 'all', 'the', 'neighbors', 'that', 'block', 'its', 'way', 'we', 'prove', 'that', 'for', 'flat', 'and', 'step', 'initial', 'conditions', 'the', 'large', 'time', 'fluctuations', 'of', 'the', 'height', 'function', 'of', 'the', 'associated', 'growth', 'model', 'along', 'any', 'spacelike', 'path', 'are', 'described', 'by', 'the', 'airy_1', 'and', 'airy_2', 'processes', 'this', 'includes', 'fluctuations', 'of', 'the', 'height', 'profile', 'for', 'a', 'fixed', 'time', 'and', 'fluctuations', 'of', 'a', 'tagged', 'particles', 'trajectory', 'as', 'special', 'cases']] | [-0.1275998755783132, 0.20398664998921376, -0.06953853291902438, 0.060746809838393936, -0.01563860196394177, -0.17641483219702123, 0.041195986783403214, 0.35685657203034726, -0.30823803511764675, -0.21320434097648208, 0.08585113413559581, -0.2973739576087451, -0.08844448351391672, 0.14481389869085864, -0.0006573152303406336, 0.002881111567546116, 0.05329023287134263, 0.06567109615578162, -0.01583982683555449, -0.21199355322587332, 0.31050686913008974, 0.05740878621152448, 0.24616400039646305, 0.04504344437397944, 0.16231389414265895, 0.06493545761015447, 0.02068595061060584, 0.01740625986131968, -0.15220061421852946, 0.046369610354304314, 0.12964185842231496, 0.05192733560327115, 0.2414129826068444, -0.4130176717903718, -0.17722427408952374, 0.13451238846388255, 0.17216388692681506, 0.10023930901209417, -0.01896508812601452, -0.2650135236710889, 0.04703347425844556, -0.1206270266251946, -0.20286011395216422, 0.022130958369743187, 0.059430517898239554, 0.06794710841212982, -0.27710917320337547, 0.08748588239484766, 0.07870022986011888, -0.0011459448130674732, -0.03910503202023039, -0.05758552368870457, -0.06992866674401951, 0.15379283586387, 0.040099866705205184, 0.03022752905228329, 0.15975246049499917, -0.12679734822019068, -0.09270381226737812, 0.3607665312485498, -0.06408047884729809, -0.23282640234757107, 0.1913504743116718, -0.18293317165242698, -0.08314175302054262, 0.11923277608765452, 0.13768236556551555, 0.10517726449332046, -0.1250135523920655, 0.11327343026027185, -0.04948594964570501, 0.11786037288098686, 0.06520400675990194, -0.049066734352732275, 0.2074027826885373, 0.1369152090317814, 0.11168668627427004, 0.13658843560198558, -0.08774632671497563, -0.16068135084837532, -0.3595359726872259, -0.18480291609082697, -0.20130594778304142, 0.03362144560138333, -0.10484065029934586, -0.19332353605264888, 0.40039109775697074, 0.1165387826899374, 0.25549330028425, 0.09274736636553357, 0.23279723827048993, 0.13139097436751665, 0.03292760406213912, 0.0881653933704478, 0.12930072478733015, 0.09022124161383191, 0.08044061576269422, -0.1944441232531901, 0.07906709645775337, 0.07901135152567504] |
707.2814 | Coverage Probability of Random Intervals | In this paper, we develop a general theory on the coverage probability of
random intervals defined in terms of discrete random variables with continuous
parameter spaces. The theory shows that the minimum coverage probabilities of
random intervals with respect to corresponding parameters are achieved at
discrete finite sets and that the coverage probabilities are continuous and
unimodal when parameters are varying in between interval endpoints. The theory
applies to common important discrete random variables including binomial
variable, Poisson variable, negative binomial variable and hypergeometrical
random variable. The theory can be used to make relevant statistical inference
more rigorous and less conservative.
| math.ST math.PR stat.ME stat.TH | in this paper we develop a general theory on the coverage probability of random intervals defined in terms of discrete random variables with continuous parameter spaces the theory shows that the minimum coverage probabilities of random intervals with respect to corresponding parameters are achieved at discrete finite sets and that the coverage probabilities are continuous and unimodal when parameters are varying in between interval endpoints the theory applies to common important discrete random variables including binomial variable poisson variable negative binomial variable and hypergeometrical random variable the theory can be used to make relevant statistical inference more rigorous and less conservative | [['in', 'this', 'paper', 'we', 'develop', 'a', 'general', 'theory', 'on', 'the', 'coverage', 'probability', 'of', 'random', 'intervals', 'defined', 'in', 'terms', 'of', 'discrete', 'random', 'variables', 'with', 'continuous', 'parameter', 'spaces', 'the', 'theory', 'shows', 'that', 'the', 'minimum', 'coverage', 'probabilities', 'of', 'random', 'intervals', 'with', 'respect', 'to', 'corresponding', 'parameters', 'are', 'achieved', 'at', 'discrete', 'finite', 'sets', 'and', 'that', 'the', 'coverage', 'probabilities', 'are', 'continuous', 'and', 'unimodal', 'when', 'parameters', 'are', 'varying', 'in', 'between', 'interval', 'endpoints', 'the', 'theory', 'applies', 'to', 'common', 'important', 'discrete', 'random', 'variables', 'including', 'binomial', 'variable', 'poisson', 'variable', 'negative', 'binomial', 'variable', 'and', 'hypergeometrical', 'random', 'variable', 'the', 'theory', 'can', 'be', 'used', 'to', 'make', 'relevant', 'statistical', 'inference', 'more', 'rigorous', 'and', 'less', 'conservative']] | [-0.06299009892771408, 0.16360058076103393, -0.07011937914821918, 0.11137455937309688, -0.07165300492012855, -0.16465359773615948, 0.120930991279616, 0.40799556042547197, -0.2804583592321908, -0.23959300748480594, 0.08985680276366632, -0.24497952024535377, -0.11136789726886419, 0.1696828182159674, -0.13015887031958687, 0.12051003711242782, 0.009979048324287823, 0.06315302935954516, -0.07292609143827, -0.2748823252305997, 0.284661734190834, 0.02152690417732638, 0.2565319450701227, -0.05343078477031524, 0.10117912753531248, 0.08104282007137738, -0.1105298905651832, 0.05610707600942195, -0.1280007354457261, 0.11452418172012756, 0.2681170614519258, 0.07973663963949179, 0.3144767479878841, -0.3632398921314, -0.2547071643524093, 0.14470051091606959, 0.09478594349826326, 0.035994768078153085, 0.06017699043798413, -0.2549930950534521, 0.10223807312898558, -0.14056698433446266, -0.10570293908828113, -0.06611923220576627, 0.037617339512868095, 0.10299803702953723, -0.3544788460367092, 0.10640412634976282, 0.02714959461020656, 0.06829420367421785, -0.015365219587404834, -0.137896942577583, -0.023407328334443346, 0.10358176389760983, 0.040647166845674564, 0.02023700944673602, 0.06859529741790772, -0.048070595910920215, -0.12878993314017753, 0.33597748106954123, -0.03637855079504523, -0.28847360290070573, 0.17320899680109308, -0.15858596777266795, -0.18653019708996216, 0.11977951165915716, 0.1881903048563232, 0.13151701264968602, -0.13654333037525382, 0.09338332919892625, -0.00824132454258823, 0.15122039111718388, 0.07103477628200804, 0.05166983537636421, 0.17878102279720035, 0.08443979098055844, 0.09265321861067326, 0.1383514837534766, -0.07201751496407692, -0.1983642881329282, -0.338045746733499, -0.07070349719338488, -0.18121027680215343, 0.013313669065880303, -0.19885765731572128, -0.24853430642276117, 0.37357550450960303, 0.14199080581472504, 0.1995890068240685, 0.13353261005797304, 0.20693823779094042, 0.20800153057247694, -0.06210927363706402, 0.04086226194700466, 0.10151267411316385, 0.1694522990965017, 0.028064418348972456, -0.08497192456599066, 0.11765407363764278, 0.047271251429499374] |
707.2815 | Very high energy observations of the BL Lac objects 3C 66A and OJ 287 | Using the Solar Tower Atmospheric Cherenkov Effect Experiment (STACEE), we
have observed the BL Lac objects 3C 66A and OJ 287. These are members of the
class of low-frequency-peaked BL Lac objects (LBLs) and are two of the three
LBLs predicted by Costamante and Ghisellini to be potential sources of very
high energy (>100 GeV) gamma-ray emission. The third candidate, BL Lacertae,
has recently been detected by the MAGIC collaboration. Our observations have
not produced detections; we calculate a 99% CL upper limit of flux from 3C 66A
of 0.15 Crab flux units and from OJ 287 our limit is 0.52 Crab. These limits
assume a Crab-like energy spectrum with an effective energy threshold of 185
GeV.
| astro-ph | using the solar tower atmospheric cherenkov effect experiment stacee we have observed the bl lac objects 3c 66a and oj 287 these are members of the class of lowfrequencypeaked bl lac objects lbls and are two of the three lbls predicted by costamante and ghisellini to be potential sources of very high energy 100 gev gammaray emission the third candidate bl lacertae has recently been detected by the magic collaboration our observations have not produced detections we calculate a 99 cl upper limit of flux from 3c 66a of 015 crab flux units and from oj 287 our limit is 052 crab these limits assume a crablike energy spectrum with an effective energy threshold of 185 gev | [['using', 'the', 'solar', 'tower', 'atmospheric', 'cherenkov', 'effect', 'experiment', 'stacee', 'we', 'have', 'observed', 'the', 'bl', 'lac', 'objects', '3c', '66a', 'and', 'oj', '287', 'these', 'are', 'members', 'of', 'the', 'class', 'of', 'lowfrequencypeaked', 'bl', 'lac', 'objects', 'lbls', 'and', 'are', 'two', 'of', 'the', 'three', 'lbls', 'predicted', 'by', 'costamante', 'and', 'ghisellini', 'to', 'be', 'potential', 'sources', 'of', 'very', 'high', 'energy', '100', 'gev', 'gammaray', 'emission', 'the', 'third', 'candidate', 'bl', 'lacertae', 'has', 'recently', 'been', 'detected', 'by', 'the', 'magic', 'collaboration', 'our', 'observations', 'have', 'not', 'produced', 'detections', 'we', 'calculate', 'a', '99', 'cl', 'upper', 'limit', 'of', 'flux', 'from', '3c', '66a', 'of', '015', 'crab', 'flux', 'units', 'and', 'from', 'oj', '287', 'our', 'limit', 'is', '052', 'crab', 'these', 'limits', 'assume', 'a', 'crablike', 'energy', 'spectrum', 'with', 'an', 'effective', 'energy', 'threshold', 'of', '185', 'gev']] | [-0.042526613276628454, 0.1904764004777525, -0.005631216605001226, 0.16348417076294247, -0.10450861452083135, -0.13388188892236813, 0.05614056384014287, 0.4590357186931089, -0.08390152184212388, -0.4916728305758844, 0.06584771513810446, -0.31564222658374186, 0.0454320642507057, 0.23058650571981382, -0.03880882241104826, -0.01821217127947201, 0.07857857961689346, -0.08820089721923759, 0.08445531066109684, -0.16221633413003694, 0.17860469835457102, 0.1526656263138585, 0.23871716582376895, -0.0014039878362131402, 0.14031573797672472, -0.09235076914573538, -0.016979024004881625, -0.07278053627895384, -0.04295740720960472, 0.06398424669971754, 0.20983308610498327, 0.05179577327839195, 0.13133224706037033, -0.246844711440519, -0.19600424882634704, 0.132102815213549, 0.10105397048053043, -0.083089594295698, -0.02044678730930298, -0.34246302010684176, 0.07673787996413764, -0.24680296426382045, -0.1535408819367274, 0.10745374099672611, 0.0602434360871798, 0.011631360184200558, -0.15636747377796162, 0.10432166831265806, -0.03378354472455424, 0.0947213402489132, -0.1892128757538338, -0.156434362445123, -0.08828660645642607, 0.022354162924377054, 0.11098625745969536, 0.02671861102210422, 0.1347751714196859, -0.10041860919967614, -0.18837905278156414, 0.3876244453392152, -0.04185094549481211, 0.019867762353207016, 0.16597322075766238, -0.2210746003146251, -0.3126050303529563, 0.22750249371767559, 0.11289659022867422, 0.12444431942502229, -0.1771667651824075, 0.07378202496329322, -0.07377698310452176, 0.2243561508326695, 0.0411748012672339, 0.10090848315378716, 0.30175513226603123, 0.13588090703204467, -0.048355006958068956, 0.12098092271781784, -0.3598864554299106, 0.06792017506788774, -0.29720148907026983, -0.0281193746421446, -0.15897400356459848, 0.1662245104637585, -0.08349228191042946, -0.035733825968205124, 0.44095318329295724, 0.05044643710174694, 0.18312718942440276, 0.030452132957650285, 0.20339641338294565, 0.12774012046103397, 0.05283496006801403, 0.1463201073227161, 0.4598252244036773, 0.0952728073742915, 0.12815802747480057, -0.12741071399269177, -0.010429462462117702, -0.006394524496562522] |
707.2816 | Regularity of solutions to higher-order integrals of the calculus of
variations | We obtain new regularity conditions for problems of calculus of variations
with higher-order derivatives. As a corollary, we get non-occurrence of the
Lavrentiev phenomenon. Our main regularity result asserts that autonomous
integral functionals with a Lagrangian having coercive partial derivatives with
respect to the higher-order derivatives admit only minimizers with essentially
bounded derivatives.
| math.OC | we obtain new regularity conditions for problems of calculus of variations with higherorder derivatives as a corollary we get nonoccurrence of the lavrentiev phenomenon our main regularity result asserts that autonomous integral functionals with a lagrangian having coercive partial derivatives with respect to the higherorder derivatives admit only minimizers with essentially bounded derivatives | [['we', 'obtain', 'new', 'regularity', 'conditions', 'for', 'problems', 'of', 'calculus', 'of', 'variations', 'with', 'higherorder', 'derivatives', 'as', 'a', 'corollary', 'we', 'get', 'nonoccurrence', 'of', 'the', 'lavrentiev', 'phenomenon', 'our', 'main', 'regularity', 'result', 'asserts', 'that', 'autonomous', 'integral', 'functionals', 'with', 'a', 'lagrangian', 'having', 'coercive', 'partial', 'derivatives', 'with', 'respect', 'to', 'the', 'higherorder', 'derivatives', 'admit', 'only', 'minimizers', 'with', 'essentially', 'bounded', 'derivatives']] | [-0.14772252476651151, 0.010620535017465646, -0.10875310544978897, 0.08419288027117837, -0.17235963074226845, -0.08142302116765729, -0.044404818377686, 0.31866175273679337, -0.3081681323501299, -0.27157223786618384, 0.12938385191461388, -0.27243861447105994, -0.16120920049132043, 0.15321502381197685, -0.1500538567537969, 0.07884974320823292, 0.06502480307629085, 0.0625473511809448, -0.10225569542699475, -0.2674448537236115, 0.36372500693179527, -0.1313826875197745, 0.12226603099338289, 0.09316011217756653, 0.19018712225985132, -0.005375437341841325, 0.029613316608241427, 0.014345036248483186, -0.19031014248252656, 0.14719296510348906, 0.2593390693150039, 0.009064841804639349, 0.31282535718999943, -0.4013086222815064, -0.20830431095552895, 0.1202561343791631, 0.04025692070992488, 0.04144014000347903, -0.014723967180921222, -0.2959531468673135, 0.09934795700575945, -0.09142480860903578, -0.2692721800632634, -0.16151535890574725, -0.02464412216026828, 0.12882343904589708, -0.3223583845878547, 0.14387052118743085, 0.1218398603839132, 0.0835693388131781, -0.13545332807731233, -0.11237337137133165, -0.06572230149253781, 0.007437211347146417, 0.09964120205280916, 0.02302998207720383, 0.028042026180422532, -0.07213358714614275, -0.1516930185750408, 0.3467361364021616, -0.13680396536540873, -0.2943439040218265, 0.13168266756495214, -0.158298566849586, -0.17426228544340944, 0.1304220667214326, 0.07569067035186684, 0.2102604932591038, -0.09727533899669377, 0.13599361192856757, -0.007333728010362049, 0.11912271918131495, 0.18597762397367437, 0.11430081850761231, 0.01922436019862598, 0.06492655010858797, 0.245857552923965, 0.13559693482897753, 0.05580880620323543, -0.11866220734345745, -0.4432076248955333, -0.15567846800956242, -0.11042031448967052, 0.09469674128757895, -0.13568273742676643, -0.25679796992994425, 0.3309347594578592, 0.10485806084185276, 0.11826053746747521, 0.19325025653782882, 0.23319737683489639, 0.23159173377877418, 0.07796983867180797, 0.04161771549403949, 0.15866619812430077, 0.18837991585287284, 0.1259068290764501, -0.12558889785289484, 0.08811952415326575, 0.17862343139817966] |
707.2817 | The kinetic energy operator in the subspaces of wavelet analysis | At any resolution level of wavelet expansions the physical observable of the
kinetic energy is represented by an infinite matrix which is ``canonically''
chosen as the projection of the operator $-\Delta/2$ onto the subspace of the
given resolution. It is shown, that this canonical choice is not optimal, as
the regular grid of the basis set introduces an artificial consequence of
periodicity, and it is only a particular member of possible operator
representations. We present an explicit method of preparing a near optimal
kinetic energy matrix which leads to more appropriate results in numerical
wavelet based calculations. This construction works even in those cases, where
the usual definition is unusable (i.e., the derivative of the basis functions
does not exist). It is also shown, that building an effective kinetic energy
matrix is equivalent to the renormalization of the kinetic energy by a momentum
dependent effective mass compensating for artificial periodicity effects.
| physics.chem-ph physics.comp-ph | at any resolution level of wavelet expansions the physical observable of the kinetic energy is represented by an infinite matrix which is canonically chosen as the projection of the operator delta2 onto the subspace of the given resolution it is shown that this canonical choice is not optimal as the regular grid of the basis set introduces an artificial consequence of periodicity and it is only a particular member of possible operator representations we present an explicit method of preparing a near optimal kinetic energy matrix which leads to more appropriate results in numerical wavelet based calculations this construction works even in those cases where the usual definition is unusable ie the derivative of the basis functions does not exist it is also shown that building an effective kinetic energy matrix is equivalent to the renormalization of the kinetic energy by a momentum dependent effective mass compensating for artificial periodicity effects | [['at', 'any', 'resolution', 'level', 'of', 'wavelet', 'expansions', 'the', 'physical', 'observable', 'of', 'the', 'kinetic', 'energy', 'is', 'represented', 'by', 'an', 'infinite', 'matrix', 'which', 'is', 'canonically', 'chosen', 'as', 'the', 'projection', 'of', 'the', 'operator', 'delta2', 'onto', 'the', 'subspace', 'of', 'the', 'given', 'resolution', 'it', 'is', 'shown', 'that', 'this', 'canonical', 'choice', 'is', 'not', 'optimal', 'as', 'the', 'regular', 'grid', 'of', 'the', 'basis', 'set', 'introduces', 'an', 'artificial', 'consequence', 'of', 'periodicity', 'and', 'it', 'is', 'only', 'a', 'particular', 'member', 'of', 'possible', 'operator', 'representations', 'we', 'present', 'an', 'explicit', 'method', 'of', 'preparing', 'a', 'near', 'optimal', 'kinetic', 'energy', 'matrix', 'which', 'leads', 'to', 'more', 'appropriate', 'results', 'in', 'numerical', 'wavelet', 'based', 'calculations', 'this', 'construction', 'works', 'even', 'in', 'those', 'cases', 'where', 'the', 'usual', 'definition', 'is', 'unusable', 'ie', 'the', 'derivative', 'of', 'the', 'basis', 'functions', 'does', 'not', 'exist', 'it', 'is', 'also', 'shown', 'that', 'building', 'an', 'effective', 'kinetic', 'energy', 'matrix', 'is', 'equivalent', 'to', 'the', 'renormalization', 'of', 'the', 'kinetic', 'energy', 'by', 'a', 'momentum', 'dependent', 'effective', 'mass', 'compensating', 'for', 'artificial', 'periodicity', 'effects']] | [-0.11771300143411148, 0.1312118014201232, -0.09786129568854582, 0.07666125044763236, -0.07940768532837365, -0.08936347806554855, 0.0012211612578395088, 0.35674087482424366, -0.2760380939025407, -0.2691645869979055, 0.09802286733799176, -0.23655409532728672, -0.1461669709780161, 0.17254424017170963, -0.04336952482155888, 0.040023322522467535, 0.05192471428817471, 0.0788656636542141, -0.11649995595902908, -0.20007423616464662, 0.3363014194121375, 0.12894408854452388, 0.2689099616821337, 0.03365601032096523, 0.14608163276181513, 0.008683700663413828, -0.02880114418090574, 0.0031511147934491462, -0.09570665990855523, 0.10204122507935452, 0.2463576620204115, 0.0908361615671696, 0.27251654982856716, -0.38603813472567805, -0.19224955058569515, 0.11715689007908303, 0.13482601287472523, 0.1030171186731055, -0.026399160558469626, -0.20176176087227682, 0.05533972177305644, -0.16773667098300543, -0.15358292342576857, -0.09397998824253037, 0.025380101680928312, -0.00891601943689636, -0.31071301299881265, 0.06855544101833119, 0.06893197222248904, 0.025357995951262577, -0.06578911742540879, -0.11988781605359931, -0.060065662770128085, 0.07372387671582586, 0.015392356811226993, 0.04244161818568928, 0.10606212231225723, -0.09040316597355023, -0.056862958228918695, 0.384623105292338, -0.0477619462072948, -0.27966367617397514, 0.14448241595740102, -0.10400100936342203, -0.10441344407763307, 0.14117580535420476, 0.07061573132773899, 0.11371801405935394, -0.15180571295709552, 0.1257402658063937, -0.06663899748109664, 0.18494659154259582, 0.056612824207011435, 0.04429084286463774, 0.1506194488780684, 0.14787677867146862, 0.1124094396525846, 0.08706464815348239, -0.03552675802902078, -0.08339659816667203, -0.3354049204534154, -0.13580318175380376, -0.2458790690924923, 0.07367405807618699, -0.1012919220319966, -0.20115042866835223, 0.3942630729385164, 0.13502088120971986, 0.1914160018108341, 0.010203334245374365, 0.2815435394299346, 0.20344578002709418, 0.09639847599006943, 0.07088132479863353, 0.20732345090044157, 0.10832258379580267, 0.056554637158548596, -0.21370744258620228, 0.017846637713840072, 0.12275082678441575] |
707.2818 | Dispersion of Observed Position Angles of Submillimeter Polarization in
Molecular Clouds | One can estimate the characteristic magnetic field strength in GMCs by
comparing submillimeter polarimetric observations of these sources with
simulated polarization maps developed using a range of different values for the
assumed field strength. The point of comparison is the degree of order in the
distribution of polarization position angles. In a recent paper by H. Li and
collaborators, such a comparison was carried out using SPARO observations of
two GMCs, and employing simulations by E. Ostriker and collaborators. Here we
reexamine this same question, using the same data set and the same simulations,
but using an approach that differs in several respects. The most important
difference is that we incorporate new, higher angular resolution observations
for one of the clouds, obtained using the Hertz polarimeter. We conclude that
the agreement between observations and simulations is best when the total
magnetic energy (including both uniform and fluctuating field components) is at
least as large as the turbulent kinetic energy.
| astro-ph | one can estimate the characteristic magnetic field strength in gmcs by comparing submillimeter polarimetric observations of these sources with simulated polarization maps developed using a range of different values for the assumed field strength the point of comparison is the degree of order in the distribution of polarization position angles in a recent paper by h li and collaborators such a comparison was carried out using sparo observations of two gmcs and employing simulations by e ostriker and collaborators here we reexamine this same question using the same data set and the same simulations but using an approach that differs in several respects the most important difference is that we incorporate new higher angular resolution observations for one of the clouds obtained using the hertz polarimeter we conclude that the agreement between observations and simulations is best when the total magnetic energy including both uniform and fluctuating field components is at least as large as the turbulent kinetic energy | [['one', 'can', 'estimate', 'the', 'characteristic', 'magnetic', 'field', 'strength', 'in', 'gmcs', 'by', 'comparing', 'submillimeter', 'polarimetric', 'observations', 'of', 'these', 'sources', 'with', 'simulated', 'polarization', 'maps', 'developed', 'using', 'a', 'range', 'of', 'different', 'values', 'for', 'the', 'assumed', 'field', 'strength', 'the', 'point', 'of', 'comparison', 'is', 'the', 'degree', 'of', 'order', 'in', 'the', 'distribution', 'of', 'polarization', 'position', 'angles', 'in', 'a', 'recent', 'paper', 'by', 'h', 'li', 'and', 'collaborators', 'such', 'a', 'comparison', 'was', 'carried', 'out', 'using', 'sparo', 'observations', 'of', 'two', 'gmcs', 'and', 'employing', 'simulations', 'by', 'e', 'ostriker', 'and', 'collaborators', 'here', 'we', 'reexamine', 'this', 'same', 'question', 'using', 'the', 'same', 'data', 'set', 'and', 'the', 'same', 'simulations', 'but', 'using', 'an', 'approach', 'that', 'differs', 'in', 'several', 'respects', 'the', 'most', 'important', 'difference', 'is', 'that', 'we', 'incorporate', 'new', 'higher', 'angular', 'resolution', 'observations', 'for', 'one', 'of', 'the', 'clouds', 'obtained', 'using', 'the', 'hertz', 'polarimeter', 'we', 'conclude', 'that', 'the', 'agreement', 'between', 'observations', 'and', 'simulations', 'is', 'best', 'when', 'the', 'total', 'magnetic', 'energy', 'including', 'both', 'uniform', 'and', 'fluctuating', 'field', 'components', 'is', 'at', 'least', 'as', 'large', 'as', 'the', 'turbulent', 'kinetic', 'energy']] | [-0.1102590284861412, 0.10129393971183623, -0.056214896847104914, 0.04612598187640852, -0.030175117522336637, -0.05411871912287949, 0.006308342406048758, 0.3851196186593439, -0.19918089425795463, -0.3654876729205274, 0.06396235343174939, -0.26715625095169376, -0.08810299972574745, 0.2061602336743587, 0.01809794303100509, 0.011871315851380983, 0.05162481406314558, -0.0403115798636705, -0.05291597402059249, -0.20765827553010768, 0.3364673534001495, 0.1258981619649154, 0.23541930278680653, 0.008525482473211199, 0.12163433677861703, -0.0315122917284187, -0.0688698424704784, 0.08118558204084446, -0.1361851769048095, 0.07807227241205453, 0.18633885740426287, 0.08422696162192032, 0.23217281462223846, -0.4081152602676538, -0.22813727770330786, 0.07159309854577708, 0.12186193101909719, 0.08567659843335801, -0.025930715753561286, -0.24308830100595008, 0.07241834431762889, -0.13197668525123235, -0.13894323307926518, -0.037027326919421365, 0.014394998249061453, 0.06447278704977583, -0.27183639609160587, 0.06002078917322539, -0.010165745821262746, 0.10561973432998491, -0.08583892319245334, -0.14310350104624145, -0.03604155987990384, 0.12179591108126053, 0.03799163300508657, 0.07918790515948416, 0.11166676914001096, -0.13265868784311594, -0.0995544470622664, 0.36603035170679227, -0.1072689886153322, -0.12336968366960005, 0.20669080793439068, -0.1909624811267787, -0.12918220922539506, 0.11635047158585932, 0.10663378188280459, 0.11734252601649754, -0.1390267446924692, 0.04800862436038383, -0.06285395330725138, 0.1731177983531814, 0.07430607429410838, 0.003997448975796136, 0.22013330553021707, 0.11677391274060017, 0.009839717414746978, 0.11120808557784066, -0.18734715328422152, -0.08038880895304529, -0.2772441512516028, -0.13448103382900545, -0.2167005111858296, 0.04580375762461814, -0.0994260138369687, -0.04219230558226604, 0.3843563235470954, 0.1835752174977907, 0.2195720236300479, 0.02752196405648808, 0.3086728043029014, 0.106547946201087, 0.05637219337204212, 0.08950690693764275, 0.2868262176266341, 0.1657089149399625, 0.10367278897209399, -0.2051016535562805, 0.03801653199056252, -0.00033173675800281683] |
707.2819 | Propagation equations for deformable test bodies with microstructure in
extended theories of gravity | We derive the equations of motion in metric-affine gravity by making use of
the conservation laws obtained from Noether's theorem. The results are given in
the form of propagation equations for the multipole decomposition of the matter
sources in metric-affine gravity, i.e., the canonical energy-momentum current
and the hypermomentum current. In particular, the propagation equations allow
for a derivation of the equations of motion of test particles in this
generalized gravity theory, and allow for direct identification of the
couplings between the matter currents and the gauge gravitational field
strengths of the theory, namely, the curvature, the torsion, and the
nonmetricity. We demonstrate that the possible non-Riemannian spacetime
geometry can only be detected with the help of the test bodies that are formed
of matter with microstructure. Ordinary gravitating matter, i.e., matter
without microscopic internal degrees of freedom, can probe only the Riemannian
spacetime geometry. Thereby, we generalize previous results of general
relativity and Poincare gauge theory.
| gr-qc astro-ph | we derive the equations of motion in metricaffine gravity by making use of the conservation laws obtained from noethers theorem the results are given in the form of propagation equations for the multipole decomposition of the matter sources in metricaffine gravity ie the canonical energymomentum current and the hypermomentum current in particular the propagation equations allow for a derivation of the equations of motion of test particles in this generalized gravity theory and allow for direct identification of the couplings between the matter currents and the gauge gravitational field strengths of the theory namely the curvature the torsion and the nonmetricity we demonstrate that the possible nonriemannian spacetime geometry can only be detected with the help of the test bodies that are formed of matter with microstructure ordinary gravitating matter ie matter without microscopic internal degrees of freedom can probe only the riemannian spacetime geometry thereby we generalize previous results of general relativity and poincare gauge theory | [['we', 'derive', 'the', 'equations', 'of', 'motion', 'in', 'metricaffine', 'gravity', 'by', 'making', 'use', 'of', 'the', 'conservation', 'laws', 'obtained', 'from', 'noethers', 'theorem', 'the', 'results', 'are', 'given', 'in', 'the', 'form', 'of', 'propagation', 'equations', 'for', 'the', 'multipole', 'decomposition', 'of', 'the', 'matter', 'sources', 'in', 'metricaffine', 'gravity', 'ie', 'the', 'canonical', 'energymomentum', 'current', 'and', 'the', 'hypermomentum', 'current', 'in', 'particular', 'the', 'propagation', 'equations', 'allow', 'for', 'a', 'derivation', 'of', 'the', 'equations', 'of', 'motion', 'of', 'test', 'particles', 'in', 'this', 'generalized', 'gravity', 'theory', 'and', 'allow', 'for', 'direct', 'identification', 'of', 'the', 'couplings', 'between', 'the', 'matter', 'currents', 'and', 'the', 'gauge', 'gravitational', 'field', 'strengths', 'of', 'the', 'theory', 'namely', 'the', 'curvature', 'the', 'torsion', 'and', 'the', 'nonmetricity', 'we', 'demonstrate', 'that', 'the', 'possible', 'nonriemannian', 'spacetime', 'geometry', 'can', 'only', 'be', 'detected', 'with', 'the', 'help', 'of', 'the', 'test', 'bodies', 'that', 'are', 'formed', 'of', 'matter', 'with', 'microstructure', 'ordinary', 'gravitating', 'matter', 'ie', 'matter', 'without', 'microscopic', 'internal', 'degrees', 'of', 'freedom', 'can', 'probe', 'only', 'the', 'riemannian', 'spacetime', 'geometry', 'thereby', 'we', 'generalize', 'previous', 'results', 'of', 'general', 'relativity', 'and', 'poincare', 'gauge', 'theory']] | [-0.16958633985572086, 0.14898123895263027, -0.11307027729548466, 0.06285429721813839, -0.13002973683415706, -0.09314964469640878, -0.06442605185242381, 0.2507768738036085, -0.22855264140785359, -0.3288397895658662, 0.02419247549949629, -0.23642615774412087, -0.12718955134961066, 0.14106835907912416, -0.022676943915534268, 0.013530790461761177, -0.007048010252932217, 0.06243128374895188, -0.09604335448795123, -0.2110556450679492, 0.37211702351464304, 0.02939833495929054, 0.2335122206372915, 0.029156588179587273, 0.15498956612601972, 0.011898678444936918, -0.05410695522371086, 0.04938839507959546, -0.12748997986279978, 0.11606380774396335, 0.1937644460392748, 0.10226485229714234, 0.1585640950235212, -0.478054905411117, -0.25113126089808285, 0.07811102613355893, 0.08932292624895763, 0.15519166386176114, -0.04222572561661909, -0.33418006487012764, 0.031198338556431893, -0.15351561668097594, -0.18947612123629137, -0.08575196233192448, -0.013156418702683774, -0.00032544143165752384, -0.2135092504292869, 0.12868055861864452, 0.06534359294766928, -0.0037687861236037723, -0.11110089575148123, -0.07128377315428132, -0.04204857631165321, 0.06456404190753723, 0.1026808862888794, -0.010949143445842965, 0.1434028118605589, -0.1850964938524731, -0.11365251120322259, 0.43178082940874585, -0.08056654757078571, -0.2887017462568678, 0.14880038357108452, -0.16952765945776715, -0.12392909887134079, 0.08441975041274812, 0.15751131184719455, 0.16220115427710827, -0.15557675987814262, 0.15561169187596163, -0.012191758621602681, 0.10216857822742431, 0.10156754449389543, 0.03384236154586943, 0.28946592241146, 0.0732058031279831, 0.033096217013492135, 0.07658706982783191, -0.05023703361701244, -0.1232921253644363, -0.39702430393273946, -0.1940572906647376, -0.12738396054145637, 0.08049935756168168, -0.1763050526242064, -0.12872621304031898, 0.3587063123178401, 0.15430680411692804, 0.06339175453421417, 0.06464823269564066, 0.2653499016075567, 0.09751769322620195, 0.03884593031078482, 0.06791242308748566, 0.3406676833879701, 0.2373245929554698, 0.08088530979866672, -0.22468488001276496, -0.05669204482310422, 0.09789455416879267] |
707.282 | Rare decays of heavy flavor at the Tevatron | In this report I review recent results in the field of rare decays at the
Tevatron CDF II and D0 experiments. The presentation is focused on rare decays
of charm and bottom mesons with two muons in the final state. This includes
improvements over the previously available limits on the following branching
ratios: $B(D^+ \to \pi^+ \mu^+ \mu^-)< 4.7 \times 10^{-6}$, B(B_s^0 \to \phi
\mu^+ \mu^-)< 3.2\times 10^{-6}$, $B(B_s^0 \to \mu^+ \mu^-)< 1 \times 10^{-7}$,
and $B(B_d^0)< 3 \times 10{-8}$ all at the 90% confidence level. Also reported
are the first direct observation of $D_s^+ \to \phi \pi^+ \to \mu^+ \mu^-
\pi^+$ with a significance above background of over 7 standard deviations and
evidence of $D^+ \to \phi \pi^+ \to \mu^+ \mu^- \pi^+$ with a significance of
3.1 and $B(D^+ \to \phi \pi^+ \to \mu^+ \mu^- \pi^+)=(1.75 \pm0.7 \pm0.5)
\times 10^{-6}$.
| hep-ex | in this report i review recent results in the field of rare decays at the tevatron cdf ii and d0 experiments the presentation is focused on rare decays of charm and bottom mesons with two muons in the final state this includes improvements over the previously available limits on the following branching ratios bd to pi mu mu 47 times 106 bb_s0 to phi mu mu 32times 106 bb_s0 to mu mu 1 times 107 and bb_d0 3 times 108 all at the 90 confidence level also reported are the first direct observation of d_s to phi pi to mu mu pi with a significance above background of over 7 standard deviations and evidence of d to phi pi to mu mu pi with a significance of 31 and bd to phi pi to mu mu pi175 pm07 pm05 times 106 | [['in', 'this', 'report', 'i', 'review', 'recent', 'results', 'in', 'the', 'field', 'of', 'rare', 'decays', 'at', 'the', 'tevatron', 'cdf', 'ii', 'and', 'd0', 'experiments', 'the', 'presentation', 'is', 'focused', 'on', 'rare', 'decays', 'of', 'charm', 'and', 'bottom', 'mesons', 'with', 'two', 'muons', 'in', 'the', 'final', 'state', 'this', 'includes', 'improvements', 'over', 'the', 'previously', 'available', 'limits', 'on', 'the', 'following', 'branching', 'ratios', 'bd', 'to', 'pi', 'mu', 'mu', '47', 'times', '106', 'bb_s0', 'to', 'phi', 'mu', 'mu', '32times', '106', 'bb_s0', 'to', 'mu', 'mu', '1', 'times', '107', 'and', 'bb_d0', '3', 'times', '108', 'all', 'at', 'the', '90', 'confidence', 'level', 'also', 'reported', 'are', 'the', 'first', 'direct', 'observation', 'of', 'd_s', 'to', 'phi', 'pi', 'to', 'mu', 'mu', 'pi', 'with', 'a', 'significance', 'above', 'background', 'of', 'over', '7', 'standard', 'deviations', 'and', 'evidence', 'of', 'd', 'to', 'phi', 'pi', 'to', 'mu', 'mu', 'pi', 'with', 'a', 'significance', 'of', '31', 'and', 'bd', 'to', 'phi', 'pi', 'to', 'mu', 'mu', 'pi175', 'pm07', 'pm05', 'times', '106']] | [-0.10734013683144204, 0.19925325353489184, -0.013942155538113427, 0.034098932220560346, 0.01322483373202866, -0.11780609913411544, 0.16305165159140828, 0.28460085188313355, -0.1543257283716858, -0.27695551787992173, -0.003663741594026361, -0.3702074900376711, 0.040369467568590486, 0.14154121348728166, 0.04461872732440988, 0.07751071225288961, 0.0608667581971976, 0.05173092513393758, -0.07203517337296185, -0.218509430186354, 0.16417652602967464, 0.010446253795471552, 0.17427625415324094, 0.07459619830918612, 0.011003151244530789, -0.05652888612352687, -0.06664610968018286, -0.09157498763110354, -0.22384522430491532, 0.0061963744789844365, 0.18848179438881738, 0.12279174237079891, 0.1398747694618303, -0.280654605073526, -0.020410631486824413, 0.1862283881549328, 0.10598553988827969, -0.049591285725988504, 0.02473737443328279, -0.37402075507993, 0.24438289191118248, -0.12702025708963546, -0.05912805914463435, 0.005479725364180242, 0.1766515240155281, -0.10108161856346637, -0.3725234795388558, 0.11154819056772788, -0.033261971717378755, 0.06943477633938515, 0.02094166569760163, -0.32132527475972267, 0.0361886688494693, -0.025945149620043503, 0.11242953418308481, 0.18754738685046826, 0.19121202255646103, -0.06975787462291422, -0.14956904958477982, 0.3606710157578262, -0.15589838880851276, -0.1979888232572259, 0.23537681316755873, -0.27611946158794515, -0.1487090733210496, 0.22990236775078576, 0.2072697417683256, 0.032334839600212065, -0.16408534101947553, 0.15938663662355995, 0.024507260241498834, 0.19379852220362467, 0.09391699196174473, 0.052694436633396596, 0.14778195758410495, 0.18010678065424826, 0.01321557362684511, 0.0010375945825504957, -0.13871740008764666, -0.02295944843066039, -0.3662426422095502, -0.14864177881487103, -0.06087732391864088, 0.17454804724631764, -0.03779403848764939, 0.003930676919441644, 0.3196075755111176, 0.04464331142631152, 0.32886672102370496, 0.06070012983819135, 0.26878996943827155, 0.07314040600299156, -0.004094619196739128, 0.044322599147667556, 0.2196832902347602, 0.16296642618052823, 0.12041038770409529, -0.2071000003220728, -0.06486601713398243, -0.057133090119514104] |
707.2821 | On the combined gravity gradient modeling for applied geophysics | Gravity gradiometry research and development has intensified in recent years
to the extent that technologies providing a resolution of about 1 Eotvos per 1
sec average shall likely soon be available for multiple critical applications
such as natural resources exploration, oil reservoir monitoring and defence
establishment. Much of the content of this paper was composed a decade ago, and
only minor modifications were required for the conclusions to be just as
applicable today. In this paper we demonstrate how gravity gradient data can be
modeled, and show some examples of how gravity gradient data can be combined in
order to extract valuable information. In particular, this study demonstrates
the importance of two gravity gradient components, Txz and Tyz which, when
processed together, can provide more information on subsurface density
contrasts than that derived solely from the vertical gravity gradient (Tzz).
| physics.geo-ph physics.ins-det | gravity gradiometry research and development has intensified in recent years to the extent that technologies providing a resolution of about 1 eotvos per 1 sec average shall likely soon be available for multiple critical applications such as natural resources exploration oil reservoir monitoring and defence establishment much of the content of this paper was composed a decade ago and only minor modifications were required for the conclusions to be just as applicable today in this paper we demonstrate how gravity gradient data can be modeled and show some examples of how gravity gradient data can be combined in order to extract valuable information in particular this study demonstrates the importance of two gravity gradient components txz and tyz which when processed together can provide more information on subsurface density contrasts than that derived solely from the vertical gravity gradient tzz | [['gravity', 'gradiometry', 'research', 'and', 'development', 'has', 'intensified', 'in', 'recent', 'years', 'to', 'the', 'extent', 'that', 'technologies', 'providing', 'a', 'resolution', 'of', 'about', '1', 'eotvos', 'per', '1', 'sec', 'average', 'shall', 'likely', 'soon', 'be', 'available', 'for', 'multiple', 'critical', 'applications', 'such', 'as', 'natural', 'resources', 'exploration', 'oil', 'reservoir', 'monitoring', 'and', 'defence', 'establishment', 'much', 'of', 'the', 'content', 'of', 'this', 'paper', 'was', 'composed', 'a', 'decade', 'ago', 'and', 'only', 'minor', 'modifications', 'were', 'required', 'for', 'the', 'conclusions', 'to', 'be', 'just', 'as', 'applicable', 'today', 'in', 'this', 'paper', 'we', 'demonstrate', 'how', 'gravity', 'gradient', 'data', 'can', 'be', 'modeled', 'and', 'show', 'some', 'examples', 'of', 'how', 'gravity', 'gradient', 'data', 'can', 'be', 'combined', 'in', 'order', 'to', 'extract', 'valuable', 'information', 'in', 'particular', 'this', 'study', 'demonstrates', 'the', 'importance', 'of', 'two', 'gravity', 'gradient', 'components', 'txz', 'and', 'tyz', 'which', 'when', 'processed', 'together', 'can', 'provide', 'more', 'information', 'on', 'subsurface', 'density', 'contrasts', 'than', 'that', 'derived', 'solely', 'from', 'the', 'vertical', 'gravity', 'gradient', 'tzz']] | [-0.08736141495308772, 0.1138044561839838, -0.09208634977255935, 0.07273327728119287, -0.09087820528404099, -0.12164352688452472, -0.009671957139263226, 0.35854356165003515, -0.2637548948557157, -0.3651457841818531, 0.17684765727819363, -0.265039324288027, -0.1290123675312118, 0.22173335418051135, -0.11420425021197593, -0.003794657255428425, 0.06248005328571721, 0.02905876389759478, -0.04732580943053345, -0.26477327380005433, 0.2681302623688311, 0.09845893429187329, 0.2497610876849596, 0.06996587287648108, 0.0644493476551809, -0.04765265506179328, -0.0467188191951077, 0.04571218099580079, -0.11673417008885577, 0.14498041713596793, 0.27103550719988084, 0.1638606605685208, 0.3005736369734117, -0.4802779970501644, -0.2879881195798246, 0.0663527613033311, 0.16672649742163165, 0.11178575272155601, -0.07728348196405273, -0.24897966287739953, 0.061929523074903285, -0.17992520672049833, -0.09850039650632096, -0.08499930426773643, 0.03632237659801014, -0.004472032622130507, -0.22844501616487253, 0.058603951305090246, 0.00810127661553333, 0.07180311157624575, -0.015593356117977342, -0.1207700714012785, -0.014724738409985666, 0.13996643026336603, 0.05171420512403753, 0.07487052341288739, 0.16101732537693655, -0.12637162197927904, -0.06814493339819212, 0.37955588934288453, -0.10388383903101266, -0.1419402860523458, 0.18935233077027605, -0.12280957575927934, -0.14856190450718978, 0.06927695392590502, 0.1906663815193958, 0.10113947522789375, -0.1703540740602783, -0.0032121486766972457, 0.02046556667799292, 0.18832921530997407, 0.08480813596195177, 0.03740460062871916, 0.2513149337762076, 0.1691940033747612, 0.07911775092904555, 0.09958194708789064, -0.08014273518305001, -0.08164278228524262, -0.2619906192636151, -0.18960787549587912, -0.15154448166098175, 0.05091786629560849, -0.06139118734869914, -0.06083383582923831, 0.3485287138382378, 0.2134911707362862, 0.15184920271723598, 0.0009754482307471335, 0.3053002592338168, 0.04584026980328549, 0.10580743022559994, 0.07298876582037496, 0.25143064338265936, 0.10343998817531257, 0.13031355927840038, -0.14779460129827476, 0.08778950641947407, -0.01844682872288631] |
707.2822 | Centralizers in the Hecke algebras of complex reflection groups | How far can the elementary description of centralizers of parabolic
subalgebras of Hecke algebras of finite real reflection groups be generalized
to the complex reflection group case? In this paper we begin to answer this
question by establishing results in two directions. First, under conditions
closely analogous to those existing for the real case, we give explicit
relations between coefficients in an element centralizing a generator. Second,
we introduce a tool for dealing with a major challenge of the complex case --
the ``instability'' of certain double cosets -- through the definition and use
of a double coset graph. We use these results to find integral bases for the
centralizers of generators as well as the centres of the Hecke algebras of
types $G_4$ and $G(4,1,2)$.
Keywords: complex reflection group; Hecke algebra; centre; centralizer;
modular; double coset.
| math.RT | how far can the elementary description of centralizers of parabolic subalgebras of hecke algebras of finite real reflection groups be generalized to the complex reflection group case in this paper we begin to answer this question by establishing results in two directions first under conditions closely analogous to those existing for the real case we give explicit relations between coefficients in an element centralizing a generator second we introduce a tool for dealing with a major challenge of the complex case the instability of certain double cosets through the definition and use of a double coset graph we use these results to find integral bases for the centralizers of generators as well as the centres of the hecke algebras of types g_4 and g412 keywords complex reflection group hecke algebra centre centralizer modular double coset | [['how', 'far', 'can', 'the', 'elementary', 'description', 'of', 'centralizers', 'of', 'parabolic', 'subalgebras', 'of', 'hecke', 'algebras', 'of', 'finite', 'real', 'reflection', 'groups', 'be', 'generalized', 'to', 'the', 'complex', 'reflection', 'group', 'case', 'in', 'this', 'paper', 'we', 'begin', 'to', 'answer', 'this', 'question', 'by', 'establishing', 'results', 'in', 'two', 'directions', 'first', 'under', 'conditions', 'closely', 'analogous', 'to', 'those', 'existing', 'for', 'the', 'real', 'case', 'we', 'give', 'explicit', 'relations', 'between', 'coefficients', 'in', 'an', 'element', 'centralizing', 'a', 'generator', 'second', 'we', 'introduce', 'a', 'tool', 'for', 'dealing', 'with', 'a', 'major', 'challenge', 'of', 'the', 'complex', 'case', 'the', 'instability', 'of', 'certain', 'double', 'cosets', 'through', 'the', 'definition', 'and', 'use', 'of', 'a', 'double', 'coset', 'graph', 'we', 'use', 'these', 'results', 'to', 'find', 'integral', 'bases', 'for', 'the', 'centralizers', 'of', 'generators', 'as', 'well', 'as', 'the', 'centres', 'of', 'the', 'hecke', 'algebras', 'of', 'types', 'g_4', 'and', 'g412', 'keywords', 'complex', 'reflection', 'group', 'hecke', 'algebra', 'centre', 'centralizer', 'modular', 'double', 'coset']] | [-0.14791740758566937, 0.06846905566516086, -0.052608051838474036, 0.06874004320012156, -0.14664936606918197, -0.10696845551007497, -0.0004919700649455745, 0.36187491962797386, -0.33387933932453284, -0.2276207732919381, 0.11592955087092635, -0.24672398001038984, -0.17802508233450423, 0.2294667793660244, -0.12034641195144226, -0.0003349767692053496, 0.06412057395904575, 0.09646081649211806, -0.10147257201693285, -0.2552909065316407, 0.42094247907038723, 0.014030148751283092, 0.2432347175095286, 0.006093872757541683, 0.054286880425608426, 0.06320911402980894, -0.03077812082787503, -0.0633307726247542, -0.12878861183773227, 0.1505874044386976, 0.33044603095153596, 0.050987022039272, 0.19063624904365906, -0.39804172871717763, -0.09727657430304854, 0.15066193375361167, 0.17489142265082197, 0.04872603886656519, -0.06628458575804287, -0.25456985959665046, 0.07129835685603876, -0.22894746312565767, -0.18414314236290363, -0.050150100649125985, 0.015400030219288015, -0.00027053148499620494, -0.24819304584525526, 0.010443471789137642, 0.08380622678842924, 0.13816810398251375, -0.04927204662947846, -0.08915966668916839, -0.0013029048646758519, 0.13676377474816878, -0.019944592408307076, -0.06103635414976126, 0.0993963225219927, -0.0839801185587143, -0.17994928850667247, 0.39803208608124685, -0.015238859072160809, -0.21756496534807912, 0.14513007272903655, -0.18119074750705552, -0.19513808170667113, 0.06868897477137063, 0.10732304934523444, 0.1042186747958411, -0.07622408841861718, 0.14864414825656716, -0.12155255295141641, 0.037096553944301475, 0.08477755211321499, -0.030696569392874615, 0.1364370215086461, 0.08296380839797098, 0.04350253434351353, 0.15011671898841386, 0.04209552999975076, -0.03444703125895293, -0.3706279381650931, -0.2069659387108995, -0.06931303852279462, 0.07824118937880023, -0.09391462456399345, -0.19883635060674051, 0.4227927268496645, 0.10106529714192139, 0.17463521742254995, 0.06789097621508722, 0.21416670877708874, 0.09594336409059201, 0.10573044020348965, 0.019924673083917682, 0.10924143234003725, 0.23369658723258094, -0.020750189622266414, -0.1678040195693029, -0.04893800294645297, 0.1799169825667988] |
707.2823 | Management of localized energy in discrete nonlinear transmission lines | The manipulation of locked intrinsic localized modes/discrete breathers is
studied experimentally in nonlinear electric transmission line arrays.
Introducing a static lattice impurity in the form of a capacitor, resistor or
inductor has been used both to seed or destroy and attract or repel these
localized excitations. In a nonlinear di-element array counter propagating
short electrical pulses traveling in the acoustic branch are used to generate a
stationary intrinsic localized mode in the optic branch at any particular
lattice site. By changing the pulse polarity the same localized excitation can
be eliminated demonstrating that the dynamical impurity associated with the
propagating electrical pulse in the acoustic branch can trigger optical
localized mode behavior.
| nlin.PS | the manipulation of locked intrinsic localized modesdiscrete breathers is studied experimentally in nonlinear electric transmission line arrays introducing a static lattice impurity in the form of a capacitor resistor or inductor has been used both to seed or destroy and attract or repel these localized excitations in a nonlinear dielement array counter propagating short electrical pulses traveling in the acoustic branch are used to generate a stationary intrinsic localized mode in the optic branch at any particular lattice site by changing the pulse polarity the same localized excitation can be eliminated demonstrating that the dynamical impurity associated with the propagating electrical pulse in the acoustic branch can trigger optical localized mode behavior | [['the', 'manipulation', 'of', 'locked', 'intrinsic', 'localized', 'modesdiscrete', 'breathers', 'is', 'studied', 'experimentally', 'in', 'nonlinear', 'electric', 'transmission', 'line', 'arrays', 'introducing', 'a', 'static', 'lattice', 'impurity', 'in', 'the', 'form', 'of', 'a', 'capacitor', 'resistor', 'or', 'inductor', 'has', 'been', 'used', 'both', 'to', 'seed', 'or', 'destroy', 'and', 'attract', 'or', 'repel', 'these', 'localized', 'excitations', 'in', 'a', 'nonlinear', 'dielement', 'array', 'counter', 'propagating', 'short', 'electrical', 'pulses', 'traveling', 'in', 'the', 'acoustic', 'branch', 'are', 'used', 'to', 'generate', 'a', 'stationary', 'intrinsic', 'localized', 'mode', 'in', 'the', 'optic', 'branch', 'at', 'any', 'particular', 'lattice', 'site', 'by', 'changing', 'the', 'pulse', 'polarity', 'the', 'same', 'localized', 'excitation', 'can', 'be', 'eliminated', 'demonstrating', 'that', 'the', 'dynamical', 'impurity', 'associated', 'with', 'the', 'propagating', 'electrical', 'pulse', 'in', 'the', 'acoustic', 'branch', 'can', 'trigger', 'optical', 'localized', 'mode', 'behavior']] | [-0.204937798301266, 0.24638846043327992, -0.036294440395960754, 0.0347392900264822, -0.08952145833014087, -0.20539909408491275, 0.03846372106027874, 0.4526527141644196, -0.26301868253609756, -0.2336126554080031, 0.08168054313017901, -0.3111503932159394, -0.0963290765310045, 0.15127805067776617, 0.03413198916347359, 0.017214154644170775, 0.018832636518742552, 0.029970607821914283, 0.0321878873848949, -0.1258591931990602, 0.2163480623879216, 0.011039712402800267, 0.3496629077771848, 0.007396423253654079, 0.0631111938210035, 0.0066926490727134726, 0.07056700715223665, 0.026574922423936765, -0.01937646664161796, 0.07376067568548024, 0.24386506788009268, -0.035351412660780956, 0.22583303935402496, -0.54778217329559, -0.2408199883679944, 0.05389781576919962, 0.23649769792841238, 0.2018562427044592, -0.07890854023968462, -0.2884441857141527, 0.03783335523171858, -0.10784768021919511, -0.18263609148985283, -0.006400680033998056, -0.009072546957230027, 0.08334021821607497, -0.2187430463138629, 0.06868191483769227, 0.0759066173666559, 0.031187250215390868, -0.05896817977878858, -0.013552397237667307, -0.09349181707948447, 0.10041094685227356, 0.0029511516384611077, 0.03283104985444383, 0.16590139113197272, -0.11944008415130983, -0.10518915841609917, 0.3097674536137757, -0.08982480448903515, -0.18046455569565295, 0.17616131880574606, -0.1464903763262555, 0.019323771680832248, 0.20067877911285242, 0.19444583671178076, 0.08942783857611093, -0.1165413189293097, 0.010076461739233558, 0.043066501697467174, 0.20300771415402943, 0.17295964696783234, 0.08246453785845502, 0.29697597773576323, 0.16032833944455804, 0.04045283118770881, 0.19668128662213513, -0.10592295466551811, -0.030309578467329793, -0.2447451593185013, -0.05192450138168748, -0.1923430171345403, 0.060995654202997684, -0.02551410136180824, -0.2473069771700962, 0.46938234075522894, 0.09091757403009317, 0.13367447870444846, -0.0908516267653216, 0.24643005859530107, 0.1686498245647685, 0.08366501470181074, 0.04975560558536513, 0.2866821086880836, 0.13714767002966255, 0.1291483725082468, -0.30736132449555126, 0.01889466106129641, 0.035571525753899054] |
707.2824 | Quasi--local angular momentum of non--symmetric isolated and dynamical
horizons from the conformal decomposition of the metric | A new definition of quasi--local angular momentum of non--axisymmetric
marginally outer trapped surfaces is proposed. It is based on conformal
decomposition of the two--dimensional metric and the action of the group of
conformal symmetries. The definition is completely general and agrees with the
standard one in axi--symmetric surfaces.
| gr-qc | a new definition of quasilocal angular momentum of nonaxisymmetric marginally outer trapped surfaces is proposed it is based on conformal decomposition of the twodimensional metric and the action of the group of conformal symmetries the definition is completely general and agrees with the standard one in axisymmetric surfaces | [['a', 'new', 'definition', 'of', 'quasilocal', 'angular', 'momentum', 'of', 'nonaxisymmetric', 'marginally', 'outer', 'trapped', 'surfaces', 'is', 'proposed', 'it', 'is', 'based', 'on', 'conformal', 'decomposition', 'of', 'the', 'twodimensional', 'metric', 'and', 'the', 'action', 'of', 'the', 'group', 'of', 'conformal', 'symmetries', 'the', 'definition', 'is', 'completely', 'general', 'and', 'agrees', 'with', 'the', 'standard', 'one', 'in', 'axisymmetric', 'surfaces']] | [-0.15918779101533195, 0.13081260275309128, -0.12714797768179173, 0.023888232300426655, -0.1175208977656439, -0.11017084722213137, -0.08906277556282778, 0.30240865944263834, -0.1998445268254727, -0.23156071508613726, 0.0604212917072194, -0.2460651903723677, -0.11647260788595304, 0.1873544916161336, -0.09812210347202684, 0.07468502545574059, 0.011119374597910792, 0.05581946707873916, -0.1470887540296341, -0.21065390816268822, 0.42200374805058044, 0.07921247881798384, 0.28562075217875343, 0.02224954297222818, 0.10679229210169676, -0.015967505188503612, -0.037751655851025134, 0.028806024153406422, -0.1449515317217447, 0.15349689746896425, 0.15099011237422624, 0.04393736625206657, 0.1649232388008386, -0.3733675883850083, -0.21381375203297162, 0.03541833699758475, 0.09380435974647601, 0.125659052534805, -0.034417446355898086, -0.2665962166308115, 0.06513631986066078, -0.15743800272078565, -0.20255142390184724, -0.0706335044815205, 0.02581494371406734, -0.07261474958310525, -0.19584052266630655, 0.12633379701098116, 0.12258880870649591, 0.07760534118278883, -0.1355045436648652, -0.04613176581672936, -0.11582377083444347, 0.04647569276858121, 0.07245918441428027, 0.06141174368288679, 0.16120866627898067, -0.09249416703823954, -0.07165482973020214, 0.3922105301171541, -0.07299256095817934, -0.30409836970890564, 0.17399781287046304, -0.19015768647780837, -0.09382639221924667, 0.11524942949957524, 0.10829653847031295, 0.1983268799861738, -0.12754099160277596, 0.18073839422383267, -0.0933621284008647, 0.08839107650176932, 0.0935997733225425, -0.005736361571810751, 0.2553308416778843, 0.12455980371062954, 0.11460333686166753, 0.1234808554678845, -0.08507570431781157, -0.14830014893474677, -0.35844919783994555, -0.2031399482608928, -0.1945662877211968, 0.070802713171967, -0.1129593669508419, -0.20446192434368035, 0.42300204117782414, 0.026562707165794563, 0.17109719612441646, 0.05089129317396631, 0.2776706249763568, 0.06885731038831484, 0.12857815906560668, 0.13475097498546043, 0.26313835198137286, 0.18491544446442276, -0.0020869022652429217, -0.23399429081958564, -0.06528246434754692, 0.14952541580229686] |
707.2825 | Dark Energy in Global Brane Universe | We discuss the exact solutions of brane universes and the results indicate
the Friedmann equations on the branes are modified with a new density term.
Then, we assume the new term as the density of dark energy. Using Wetterich's
parametrization equation of state (EOS) of dark energy, we obtain the new term
varies with the red-shift z. Finally, the evolutions of the mass density
parameter $\Omega_2$, dark energy density parameter $\Omega_x$ and deceleration
parameter q_2 are studied.
| gr-qc | we discuss the exact solutions of brane universes and the results indicate the friedmann equations on the branes are modified with a new density term then we assume the new term as the density of dark energy using wetterichs parametrization equation of state eos of dark energy we obtain the new term varies with the redshift z finally the evolutions of the mass density parameter omega_2 dark energy density parameter omega_x and deceleration parameter q_2 are studied | [['we', 'discuss', 'the', 'exact', 'solutions', 'of', 'brane', 'universes', 'and', 'the', 'results', 'indicate', 'the', 'friedmann', 'equations', 'on', 'the', 'branes', 'are', 'modified', 'with', 'a', 'new', 'density', 'term', 'then', 'we', 'assume', 'the', 'new', 'term', 'as', 'the', 'density', 'of', 'dark', 'energy', 'using', 'wetterichs', 'parametrization', 'equation', 'of', 'state', 'eos', 'of', 'dark', 'energy', 'we', 'obtain', 'the', 'new', 'term', 'varies', 'with', 'the', 'redshift', 'z', 'finally', 'the', 'evolutions', 'of', 'the', 'mass', 'density', 'parameter', 'omega_2', 'dark', 'energy', 'density', 'parameter', 'omega_x', 'and', 'deceleration', 'parameter', 'q_2', 'are', 'studied']] | [-0.1810795466911483, 0.15930284351086269, -0.126574658032797, 0.10573984609082245, -0.11324766082326312, -0.10531183181620844, -0.012574983301100793, 0.2848615272986618, -0.21399245357939176, -0.31269221206183556, 0.023240705469756255, -0.25950376932545527, -0.013008020933136924, 0.12642993103083852, 0.033514556097011865, 0.017371652085430823, -0.004722755535372666, 0.04661705450142746, -0.09618899748526823, -0.2268531680252258, 0.4181777156115352, 0.02954028614542701, 0.2109254692233615, 0.04113073264817139, 0.14821650251117233, -0.08882104717013607, -0.01283032541441453, -0.015974975312007714, -0.32761614621532237, 0.013134908293942352, 0.15330467042634144, 0.08240871080015967, 0.1827624874497921, -0.380928387720283, -0.2518783062454555, 0.11457718322174502, 0.12683852783755048, 0.11638648845497276, -0.05023815217518623, -0.29472667143329395, 0.00390083614930317, -0.23989570555700498, -0.17896891904196569, -0.07349140363497442, -0.011753038466944322, 0.08200205000746366, -0.24979310329132653, 0.2113801620404732, -0.05493196477666013, -0.10844385059090791, -0.1729374801824716, -0.166272012277978, -0.07733903376781684, -0.0291055526112678, 0.12253639537103281, 0.031065641352060167, 0.12098105410839637, -0.1901071374969823, -0.013800950170579281, 0.33820235921529596, -0.14276034124089743, -0.20367426497789173, 0.08759663665860698, -0.11247941919953211, -0.11558729071508754, 0.07308096084259934, 0.10293217718770559, 0.10585231075740674, -0.09341293223831174, 0.19737567823204852, 0.034930106742283355, 0.21841095677159678, 0.07935877059671012, 0.03331771537709933, 0.21620318393960788, 0.11868046156384728, 0.06660928291135601, 0.07160701432458863, -0.09278038972928249, -0.1010890370718651, -0.385595858290598, -0.1623349920014984, -0.15156934906232666, 0.040154822400541273, -0.19076327180040867, -0.13811376408444015, 0.3929723771651844, 0.08312597872036231, 0.2059632454357751, 0.04159976453097029, 0.2541307270913929, 0.1770064092480106, -0.024656125489477213, 0.09403248578982802, 0.26245833329808016, 0.11527570490664862, 0.08851440619169311, -0.24262643675093068, -0.05551898709873294, 0.07147341086710622] |
707.2826 | Testing the External Shock Model of Gamma-Ray Bursts using the Late-Time
Simultaneous Optical and X-ray Afterglows | We study the ``normal'' decay phase of the X-ray afterglows of gamma-ray
bursts (GRBs), which follows the shallow decay phase, using the events
simultaneously observed in the R-band. The classical external shock model -- in
which neither the delayed energy injection nor time-dependency of shock
micro-physics is considered -- shows that the decay indices of the X-ray and
R-band light curves, $\alpha_{\rm X}$ and $\alpha_{\rm O}$, obey a certain
relation, and that in particular, $\alpha_{\rm O}-\alpha_{\rm X}$ should be
larger than -1/4 unless the ambient density increases with the distance from
the central engine. For our selected 14 samples, we have found that 4 events
violate the limit at more than the 3$\sigma$ level, so that a fraction of
events are outliers of the classical external shock model at the ``normal''
decay phase.
| astro-ph | we study the normal decay phase of the xray afterglows of gammaray bursts grbs which follows the shallow decay phase using the events simultaneously observed in the rband the classical external shock model in which neither the delayed energy injection nor timedependency of shock microphysics is considered shows that the decay indices of the xray and rband light curves alpha_rm x and alpha_rm o obey a certain relation and that in particular alpha_rm oalpha_rm x should be larger than 14 unless the ambient density increases with the distance from the central engine for our selected 14 samples we have found that 4 events violate the limit at more than the 3sigma level so that a fraction of events are outliers of the classical external shock model at the normal decay phase | [['we', 'study', 'the', 'normal', 'decay', 'phase', 'of', 'the', 'xray', 'afterglows', 'of', 'gammaray', 'bursts', 'grbs', 'which', 'follows', 'the', 'shallow', 'decay', 'phase', 'using', 'the', 'events', 'simultaneously', 'observed', 'in', 'the', 'rband', 'the', 'classical', 'external', 'shock', 'model', 'in', 'which', 'neither', 'the', 'delayed', 'energy', 'injection', 'nor', 'timedependency', 'of', 'shock', 'microphysics', 'is', 'considered', 'shows', 'that', 'the', 'decay', 'indices', 'of', 'the', 'xray', 'and', 'rband', 'light', 'curves', 'alpha_rm', 'x', 'and', 'alpha_rm', 'o', 'obey', 'a', 'certain', 'relation', 'and', 'that', 'in', 'particular', 'alpha_rm', 'oalpha_rm', 'x', 'should', 'be', 'larger', 'than', '14', 'unless', 'the', 'ambient', 'density', 'increases', 'with', 'the', 'distance', 'from', 'the', 'central', 'engine', 'for', 'our', 'selected', '14', 'samples', 'we', 'have', 'found', 'that', '4', 'events', 'violate', 'the', 'limit', 'at', 'more', 'than', 'the', '3sigma', 'level', 'so', 'that', 'a', 'fraction', 'of', 'events', 'are', 'outliers', 'of', 'the', 'classical', 'external', 'shock', 'model', 'at', 'the', 'normal', 'decay', 'phase']] | [-0.07459936502944821, 0.18168355504480693, -0.06654180085214857, 0.16204098143274537, -0.04775912669988779, -0.11383618800900877, 0.09170963726937771, 0.3807831630683862, -0.20833714943952286, -0.3189373503080927, 0.053507598406241204, -0.3384076730849651, -0.029471575708773273, 0.20809107565885196, 0.03175213853828609, -0.016947013798870522, 0.026761373567681473, -0.006745859629546221, -0.09734796325031381, -0.20877896603913262, 0.26874269446035703, 0.058204488133868346, 0.25022130452293473, -0.03495740277979236, 0.04110599515865593, -0.04048973578923883, -0.009169914870737837, -0.006692183175339149, -0.10148581150816216, 0.010393778743365636, 0.17045852249273313, 0.09824082582400968, 0.17382350508123637, -0.4034907565237238, -0.23518502356735274, 0.15150924937513013, 0.13355789134063972, -0.0027805813140450763, -0.010950817238167824, -0.2545577854419557, 0.07471032781311526, -0.16833048990139596, -0.13728340319895113, 0.075756755997785, 0.07047134271393028, 0.058205269053220175, -0.2332113565089038, 0.15795382151174217, 0.05389518801910946, 0.03300491224687833, -0.07680044114553872, -0.04769636993744196, -0.05918940106370988, 0.0337257503818434, 0.08094628270213994, 0.07595711889914059, 0.16135662769531617, -0.15063999742985917, -0.04545077512470575, 0.3754447406014571, -0.07482742162604923, -0.04344468059448096, 0.16378387450419654, -0.23133114750425404, -0.1436752384682992, 0.2063539189680551, 0.12818600753895365, 0.08820231245257533, -0.11505679727460329, 0.02048879740625405, -0.0013543302596260149, 0.23745805851828594, 0.04957678591331037, 0.049108721351680845, 0.2080466588959098, 0.11152855317609814, 0.013898943033284292, 0.09065111022008261, -0.19739573345734523, -0.008699934481858062, -0.350167158117088, -0.12442967783874617, -0.12291872636594164, 0.1068021070242349, -0.128930728022533, -0.12275910514693421, 0.36379835627471596, 0.09792915060668467, 0.19983412402753647, 0.05870374746692295, 0.2525530952673692, 0.1590978178052375, 0.06087363546069425, 0.1364653119029334, 0.3524816913064569, 0.10526903865572351, 0.09493876853868222, -0.2172209402653747, 0.11883026959661108, 0.015623436103431651] |
707.2827 | Debris Disks in NGC 2547 | We have surveyed the 30 Myr-old cluster NGC 2547 for planetary debris disks
using Spitzer. At 4.5-8 um we are sensitive to the photospheric level down to
mid-M stars (0.2 Msol) and at 24 um to early-G stars (1.2 Msol). We find only
two to four stars with excesses at 8 um out of ~400-500 cluster members,
resulting in an excess fraction <~1 percent at this wavelength. By contrast,
the excess fraction at 24 um is ~40 percent (for B-F types). Out of four
late-type stars with excesses at 8 um two marginal ones are consistent with
asteroid-like debris disks. Among stars with strong 8 um excesses one is
possibly from a transitional disk, while another one can be a result of a
catastrophic collision. Our survey demonstrates that the inner 0.1-1 AU parts
of disks around solar-type stars clear out very thoroughly by 30 Myrs of age.
Comparing with the much slower decay of excesses at 24 and 70 um, disks clear
from the inside out, of order 10 Myr for the inner zones probed at 8 um
compared with a hundred or more Myr for those probed with the two longer
wavelengths.
| astro-ph | we have surveyed the 30 myrold cluster ngc 2547 for planetary debris disks using spitzer at 458 um we are sensitive to the photospheric level down to midm stars 02 msol and at 24 um to earlyg stars 12 msol we find only two to four stars with excesses at 8 um out of 400500 cluster members resulting in an excess fraction 1 percent at this wavelength by contrast the excess fraction at 24 um is 40 percent for bf types out of four latetype stars with excesses at 8 um two marginal ones are consistent with asteroidlike debris disks among stars with strong 8 um excesses one is possibly from a transitional disk while another one can be a result of a catastrophic collision our survey demonstrates that the inner 011 au parts of disks around solartype stars clear out very thoroughly by 30 myrs of age comparing with the much slower decay of excesses at 24 and 70 um disks clear from the inside out of order 10 myr for the inner zones probed at 8 um compared with a hundred or more myr for those probed with the two longer wavelengths | [['we', 'have', 'surveyed', 'the', '30', 'myrold', 'cluster', 'ngc', '2547', 'for', 'planetary', 'debris', 'disks', 'using', 'spitzer', 'at', '458', 'um', 'we', 'are', 'sensitive', 'to', 'the', 'photospheric', 'level', 'down', 'to', 'midm', 'stars', '02', 'msol', 'and', 'at', '24', 'um', 'to', 'earlyg', 'stars', '12', 'msol', 'we', 'find', 'only', 'two', 'to', 'four', 'stars', 'with', 'excesses', 'at', '8', 'um', 'out', 'of', '400500', 'cluster', 'members', 'resulting', 'in', 'an', 'excess', 'fraction', '1', 'percent', 'at', 'this', 'wavelength', 'by', 'contrast', 'the', 'excess', 'fraction', 'at', '24', 'um', 'is', '40', 'percent', 'for', 'bf', 'types', 'out', 'of', 'four', 'latetype', 'stars', 'with', 'excesses', 'at', '8', 'um', 'two', 'marginal', 'ones', 'are', 'consistent', 'with', 'asteroidlike', 'debris', 'disks', 'among', 'stars', 'with', 'strong', '8', 'um', 'excesses', 'one', 'is', 'possibly', 'from', 'a', 'transitional', 'disk', 'while', 'another', 'one', 'can', 'be', 'a', 'result', 'of', 'a', 'catastrophic', 'collision', 'our', 'survey', 'demonstrates', 'that', 'the', 'inner', '011', 'au', 'parts', 'of', 'disks', 'around', 'solartype', 'stars', 'clear', 'out', 'very', 'thoroughly', 'by', '30', 'myrs', 'of', 'age', 'comparing', 'with', 'the', 'much', 'slower', 'decay', 'of', 'excesses', 'at', '24', 'and', '70', 'um', 'disks', 'clear', 'from', 'the', 'inside', 'out', 'of', 'order', '10', 'myr', 'for', 'the', 'inner', 'zones', 'probed', 'at', '8', 'um', 'compared', 'with', 'a', 'hundred', 'or', 'more', 'myr', 'for', 'those', 'probed', 'with', 'the', 'two', 'longer', 'wavelengths']] | [-0.019990686535446413, 0.14971590050822903, -0.007907492409282624, 0.06964426582076673, -0.029479653524119676, -0.06985076547890767, 0.07816433242207739, 0.4280424043920237, -0.14090913539175087, -0.424561697653658, 0.04815510608503096, -0.3682296127753006, 0.06780750121676468, 0.17566140444790848, -0.030422781647204605, -0.056820037846751124, 0.08103867638472122, -0.08377219775461198, -0.026239929231094944, -0.30731275718366324, 0.25290057276490807, 0.039582137551312284, 0.0451933769173152, -0.06657903660904885, 0.02847688082010322, -0.15804874933728008, -0.06487943638432964, -0.0748667392937332, -0.17586042296721813, 0.01509662204873316, 0.2551052061680071, 0.028967822611466357, 0.23983905149489335, -0.31420300774199444, -0.14830684427868188, 0.04530299513975216, 0.20335395889740482, -0.032207459136939696, -0.0006075184592003838, -0.23534290599828758, 0.1872939156157147, -0.16710644096289715, -0.1767433070068814, 0.12577187343375737, 0.09520774766725977, -0.050134662812702915, -0.2099278650736225, 0.13784606758500306, 0.033167699630343425, 0.193423109218633, -0.11679535518045124, -0.2107362846013389, -0.08034358194491528, 0.008820455528546087, -0.016914180453540276, 0.09086176270535624, 0.19137571833322076, -0.09185527270712611, -0.041330518097779954, 0.35789905127483546, -0.12122483428966101, 0.022180710405233728, 0.29482340544687835, -0.24325889913058005, -0.1310953774835108, 0.26263454722627017, 0.07910521423681784, 0.14294715921548148, -0.184016513369363, -0.03193823775677394, 0.009972065469950974, 0.27163973002761754, 0.15180372433993755, 0.08668342726449146, 0.3712686129759267, 0.13062358872614532, 0.017856674255640005, 0.08753500360642685, -0.30474229259224433, -0.07625268928264987, -0.24362614537834085, -0.10568990175295429, -0.054665938828658965, 0.0911564173551334, -0.14620129114059496, -0.02848592170960625, 0.2872707736846444, 0.07892484091745555, 0.22926090624946716, 0.0780848516097302, 0.22886899263674834, 0.03261310880530875, 0.21492399983876145, 0.16614811084012396, 0.33219111236484394, 0.12846622518899842, 0.1139854963379192, -0.16070834221498387, -0.004847691801842302, -0.08527686137504414] |
707.2828 | Rapid Transport of Glassy Supersolid Helium in Wavy-Rough Nanpores | We show that the presumed wavy roughness distributed along the wall of
different nanopores (radius : a around 3.5 nm for Vycor or a silica glass;
around 245 nm for porous gold) will induce larger volume flow rates of solid
helium (of which there is a minimum) which might explain reported experimental
differences of the supersolid fractions observed so far.
| physics.gen-ph | we show that the presumed wavy roughness distributed along the wall of different nanopores radius a around 35 nm for vycor or a silica glass around 245 nm for porous gold will induce larger volume flow rates of solid helium of which there is a minimum which might explain reported experimental differences of the supersolid fractions observed so far | [['we', 'show', 'that', 'the', 'presumed', 'wavy', 'roughness', 'distributed', 'along', 'the', 'wall', 'of', 'different', 'nanopores', 'radius', 'a', 'around', '35', 'nm', 'for', 'vycor', 'or', 'a', 'silica', 'glass', 'around', '245', 'nm', 'for', 'porous', 'gold', 'will', 'induce', 'larger', 'volume', 'flow', 'rates', 'of', 'solid', 'helium', 'of', 'which', 'there', 'is', 'a', 'minimum', 'which', 'might', 'explain', 'reported', 'experimental', 'differences', 'of', 'the', 'supersolid', 'fractions', 'observed', 'so', 'far']] | [-0.09095516256293502, 0.27469224493824324, -0.07672538417312554, -0.016994032888452255, 0.02570500998300011, -0.13509599087065308, 0.060742769169352825, 0.4373268522124864, -0.2251765773457996, -0.2778494249461061, 0.0745193622296013, -0.31833522560043354, -0.04489922059810389, 0.16035488537923134, -0.04737916549320443, 0.030651038228455236, 0.04064796471739409, -0.037279603608205154, -0.06082032045933528, -0.15135125088568588, 0.17506040871277515, -0.0005558992467694364, 0.2964769325897855, 0.12482430631989393, 0.05492766700108867, -0.14100728244757502, 0.05145156551120404, 0.07263757578902326, -0.26191799261795173, 0.07976995567175543, 0.21633011093599944, -0.04927791119158521, 0.2238407477704903, -0.4513169805187795, -0.24177264766294068, 0.09787176994575282, 0.1731779952296766, 0.09866895768160032, -0.07190251311729268, -0.2134774461806894, 0.12107968802358639, -0.13064310210954272, -0.17089303846518367, 0.05374094389252743, 0.08396098207114107, -0.005918831319816537, -0.2037503989265395, 0.1046401368359388, 0.051403997193674666, 0.10972792588142773, -0.07128411626948392, -0.18895316273921123, -0.06714403736641851, 0.025353559348100827, 0.014647866690026249, 0.025899339301543214, 0.2687440195704921, -0.09582920599791964, -0.02407746452648761, 0.3803814680678612, -0.05659922065560596, -0.06882492879058345, 0.1847844405723262, -0.19374828158988286, 0.02188677340745926, 0.262333365946503, 0.16622126517596386, 0.09363143957393655, -0.10991696442745752, -0.07754322587733425, -0.06667092380753198, 0.27719073154829377, 0.18209756478288416, -0.005568231653295837, 0.2791752392520844, 0.23276109532532047, 0.01888950963078414, 0.1423839013106032, -0.1852076436408748, -0.0777117583143004, -0.25145620621259374, -0.17727016328322953, -0.16279023740503748, 0.05295342996186711, -0.1313988744218092, -0.20178550044548207, 0.28990228827727044, 0.0753702307909222, 0.1989447447210866, 0.007547756747768844, 0.20202738095580017, -0.018442451401408447, 0.12748964490779377, 0.017837891939206648, 0.34115912365900763, 0.12395668905859782, 0.15374930032481582, -0.19309441381335354, 0.07804044952489815, -0.02877659978881731] |
707.2829 | Correspondence Between DGP Brane Cosmology and 5D Ricci-flat Cosmology | We discuss the correspondence between the DGP brane cosmology and 5D
Ricci-flat cosmology by letting their metrics equal each other. By this
correspondence, a specific geometrical property of the arbitrary integral
constant I in DGP metric is given and it is related to the curvature of 5D
bulk. At the same time, the relation of arbitrary functions $\mu$ and $\nu$ in
a class of Ricci-flat solutions is obtained from DGP brane metric.
| gr-qc | we discuss the correspondence between the dgp brane cosmology and 5d ricciflat cosmology by letting their metrics equal each other by this correspondence a specific geometrical property of the arbitrary integral constant i in dgp metric is given and it is related to the curvature of 5d bulk at the same time the relation of arbitrary functions mu and nu in a class of ricciflat solutions is obtained from dgp brane metric | [['we', 'discuss', 'the', 'correspondence', 'between', 'the', 'dgp', 'brane', 'cosmology', 'and', '5d', 'ricciflat', 'cosmology', 'by', 'letting', 'their', 'metrics', 'equal', 'each', 'other', 'by', 'this', 'correspondence', 'a', 'specific', 'geometrical', 'property', 'of', 'the', 'arbitrary', 'integral', 'constant', 'i', 'in', 'dgp', 'metric', 'is', 'given', 'and', 'it', 'is', 'related', 'to', 'the', 'curvature', 'of', '5d', 'bulk', 'at', 'the', 'same', 'time', 'the', 'relation', 'of', 'arbitrary', 'functions', 'mu', 'and', 'nu', 'in', 'a', 'class', 'of', 'ricciflat', 'solutions', 'is', 'obtained', 'from', 'dgp', 'brane', 'metric']] | [-0.1409211721814548, 0.1117945341199326, -0.058340089738420725, 0.11019060105253528, -0.1378592575310904, -0.19907750433776528, -0.024293791670869622, 0.31124921833785874, -0.2140145514988237, -0.25741101366778213, 0.04415489574441583, -0.2944213996201547, -0.13147525443087538, 0.09648783361384024, -0.07423513316704582, 0.014277201301107803, -0.028025232895743102, 0.06218572545589672, -0.11795014466366006, -0.2513706917460594, 0.44372519775707686, 0.06229390492404087, 0.3056837527417681, 0.019702388885586213, 0.14455833736186227, -0.08247131231473759, -0.008855549469848888, 0.05417990711672852, -0.2260452185679848, 0.10428304139835139, 0.20965671841339725, 0.1308299264120352, 0.17226515302900225, -0.35120785063029164, -0.2225335798252167, 0.12969811606712434, 0.10752738661701894, 0.10934692546207872, 0.02665721662601249, -0.3200211928019093, 0.08283842309740269, -0.1352028429456469, -0.12799370303077418, 0.02104786626296118, 0.026612766145262867, -0.06987552629369828, -0.18268643416619548, 0.06597247446835455, 0.015492455904475518, -0.023348052779005632, -0.11251023470928583, -0.04641867521503526, -0.06312490113648689, 0.07799740041243947, 0.14489667126973574, 0.0781969654716603, 0.04751851256393517, -0.12843098761691685, -0.09844810780325336, 0.38955732780353475, -0.13214386156242755, -0.2959987435153582, 0.12923397262865263, -0.17596609404103625, -0.08613001179441603, 0.035534681283429057, 0.05478012548216308, 0.17946319834380928, -0.11120813502283353, 0.25968693879500887, 0.035317080955590226, 0.07899605617341068, 0.12966954611086598, 0.017751285224221647, 0.25544553647179985, 0.09226767695185521, 0.05098561002200262, 0.14663061715691583, 0.004760835332692497, -0.08393056188813514, -0.40896357532538885, -0.1955022465942117, -0.19104900615962428, 0.14433824308475274, -0.3015060435728729, -0.1811163915683412, 0.36253140970236725, 0.041455832850260776, 0.1837497140901784, 0.08615049395141089, 0.20369474908026555, 0.047484556031930775, 0.019403833533740707, 0.07051587033007915, 0.26639621280547643, 0.09589466084596804, 0.0906547596031386, -0.21188943952438422, -0.058337759093976475, 0.126328367791656] |
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