id float64 706 1.8k | title stringlengths 1 343 | abstract stringlengths 6 6.09k | categories stringlengths 5 125 | processed_abstract stringlengths 2 5.96k | tokenized_abstract stringlengths 8 8.74k | centroid stringlengths 2.1k 2.17k |
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709.3935 | Infrared Divergences from Soft and Collinear Gauge Bosons | I review the Lee-Nauenberg thereom and discuss its inclusion of photons which
are disconnected at the level of the S-matrix but connected at the level of the
cross-section when there are initial and final state charged particles. I then
expose a new set of soft collinear divergences in massless gauge theories which
are omitted in the standard Lee-Nauenberg approach. It seems that highly
questionable assumptions are needed to obtain finite cross-sections.
| hep-ph | i review the leenauenberg thereom and discuss its inclusion of photons which are disconnected at the level of the smatrix but connected at the level of the crosssection when there are initial and final state charged particles i then expose a new set of soft collinear divergences in massless gauge theories which are omitted in the standard leenauenberg approach it seems that highly questionable assumptions are needed to obtain finite crosssections | [['i', 'review', 'the', 'leenauenberg', 'thereom', 'and', 'discuss', 'its', 'inclusion', 'of', 'photons', 'which', 'are', 'disconnected', 'at', 'the', 'level', 'of', 'the', 'smatrix', 'but', 'connected', 'at', 'the', 'level', 'of', 'the', 'crosssection', 'when', 'there', 'are', 'initial', 'and', 'final', 'state', 'charged', 'particles', 'i', 'then', 'expose', 'a', 'new', 'set', 'of', 'soft', 'collinear', 'divergences', 'in', 'massless', 'gauge', 'theories', 'which', 'are', 'omitted', 'in', 'the', 'standard', 'leenauenberg', 'approach', 'it', 'seems', 'that', 'highly', 'questionable', 'assumptions', 'are', 'needed', 'to', 'obtain', 'finite', 'crosssections']] | [-0.08795819418720793, 0.21651264350267424, -0.08436925211192473, 0.10687771607595294, -0.02464059479467139, -0.14474605529339632, 0.018705897154691425, 0.3506890845255575, -0.20290992334755004, -0.26326518328995374, 0.06248585966523683, -0.3201468611082089, -0.06118184965832726, 0.10542496330226245, -0.015085290806988874, 0.017441487782533564, 0.07658004704052987, 0.06699759982850241, -0.039998526992006365, -0.2577442258353467, 0.3681446663643895, -0.018187944822863716, 0.23206001127719122, 0.12175634604595277, 0.08081967517247667, 0.009733357743454584, -0.03968149421574629, -0.0006957261188738588, -0.07952893455902982, 0.1039707845589821, 0.23430517785575078, 0.09673660163484189, 0.1743350751374079, -0.43440827894685924, -0.12808626001376822, 0.06629669072403424, 0.13423393657296032, 0.1162342553033723, 0.0029696159712646318, -0.26373047081996565, 0.10339202062712739, -0.16652184322584365, -0.16434403150038712, -0.09634952228921263, 0.0038436943854110828, -0.05409695221570091, -0.2270296688421049, 0.06158847324685126, 0.02863797243428079, -0.012892393618012253, -0.015521166520530654, -0.14527494952325587, -0.05792511457685327, 0.07138516267203132, 0.11328614864876305, 0.02397311884197879, 0.1315373088017214, -0.193134144987857, -0.08296109121157855, 0.3827645877389696, 0.004550913800957842, -0.20385483638855859, 0.21207421162314172, -0.17945246440290974, -0.16761281360210717, 0.15849182667021733, 0.12525013143169708, 0.12608167322089328, -0.17057903332275548, 0.13790321617178025, -0.0031654674397862477, 0.12803965163133715, 0.06800833887056164, 0.06742715192081379, 0.2216542864385385, 0.09823580135834283, 0.010390352680469337, 0.08879643171161845, -0.030374869009128946, -0.09342953654519026, -0.45234598230192624, -0.10902098051366815, -0.11089876360273447, 0.050365864680540086, -0.06478713314087751, -0.2060876600984214, 0.3345495711175212, 0.17435655867060026, 0.18404402618593388, 0.016834406644456845, 0.284946330026656, 0.1300704426697769, 0.052973199939436236, 0.07254747588329179, 0.28803882784331625, 0.12108633515047099, 0.020617257749688797, -0.16722405641474694, 0.016461942317909088, 0.0477736406163245] |
709.3936 | Depletion induced isotropic-isotropic phase separation in suspensions of
rod-like colloids | When non-adsorbing polymers are added to an isotropic suspension of rod-like
colloids, the colloids effectively attract each other via depletion forces. We
performed Monte Carlo simulations to study the phase diagram of such
rod-polymer mixture. The colloidal rods were modelled as hard spherocylinders;
the polymers were described as spheres of the same diameter as the rods. The
polymers may overlap with no energy cost, while overlap of polymers and rods is
forbidden.
Large amounts of depletant cause phase separation of the mixture. We
estimated the phase boundaries of isotropic-isotropic coexistence both, in the
bulk and in confinement. To determine the phase boundaries we applied the grand
canonical ensemble using successive umbrella sampling [J. Chem. Phys. 120,
10925 (2004)], and we performed a finite-size scaling analysis to estimate the
location of the critical point. The results are compared with predictions of
the free volume theory developed by Lekkerkerker and Stroobants [Nuovo Cimento
D 16, 949 (1994)]. We also give estimates for the interfacial tension between
the coexisting isotropic phases and analyse its power-law behaviour on approach
of the critical point.
| cond-mat.soft | when nonadsorbing polymers are added to an isotropic suspension of rodlike colloids the colloids effectively attract each other via depletion forces we performed monte carlo simulations to study the phase diagram of such rodpolymer mixture the colloidal rods were modelled as hard spherocylinders the polymers were described as spheres of the same diameter as the rods the polymers may overlap with no energy cost while overlap of polymers and rods is forbidden large amounts of depletant cause phase separation of the mixture we estimated the phase boundaries of isotropicisotropic coexistence both in the bulk and in confinement to determine the phase boundaries we applied the grand canonical ensemble using successive umbrella sampling j chem phys 120 10925 2004 and we performed a finitesize scaling analysis to estimate the location of the critical point the results are compared with predictions of the free volume theory developed by lekkerkerker and stroobants nuovo cimento d 16 949 1994 we also give estimates for the interfacial tension between the coexisting isotropic phases and analyse its powerlaw behaviour on approach of the critical point | [['when', 'nonadsorbing', 'polymers', 'are', 'added', 'to', 'an', 'isotropic', 'suspension', 'of', 'rodlike', 'colloids', 'the', 'colloids', 'effectively', 'attract', 'each', 'other', 'via', 'depletion', 'forces', 'we', 'performed', 'monte', 'carlo', 'simulations', 'to', 'study', 'the', 'phase', 'diagram', 'of', 'such', 'rodpolymer', 'mixture', 'the', 'colloidal', 'rods', 'were', 'modelled', 'as', 'hard', 'spherocylinders', 'the', 'polymers', 'were', 'described', 'as', 'spheres', 'of', 'the', 'same', 'diameter', 'as', 'the', 'rods', 'the', 'polymers', 'may', 'overlap', 'with', 'no', 'energy', 'cost', 'while', 'overlap', 'of', 'polymers', 'and', 'rods', 'is', 'forbidden', 'large', 'amounts', 'of', 'depletant', 'cause', 'phase', 'separation', 'of', 'the', 'mixture', 'we', 'estimated', 'the', 'phase', 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709.3937 | Discrete behavior of Seshadri constants on surfaces | Working over C, we show that, apart possibly from a unique limit point, the
possible values of multi-point Seshadri constant for general points on smooth
projective surfaces form a discrete set. In addition to its theoretical
interest, this result is of practical value, which we demonstrate by giving
significantly improved explicit lower bounds for Seshadri constants on P^2 and
new results about ample divisors on blow ups of P^2 at general points.
| math.AG | working over c we show that apart possibly from a unique limit point the possible values of multipoint seshadri constant for general points on smooth projective surfaces form a discrete set in addition to its theoretical interest this result is of practical value which we demonstrate by giving significantly improved explicit lower bounds for seshadri constants on p2 and new results about ample divisors on blow ups of p2 at general points | [['working', 'over', 'c', 'we', 'show', 'that', 'apart', 'possibly', 'from', 'a', 'unique', 'limit', 'point', 'the', 'possible', 'values', 'of', 'multipoint', 'seshadri', 'constant', 'for', 'general', 'points', 'on', 'smooth', 'projective', 'surfaces', 'form', 'a', 'discrete', 'set', 'in', 'addition', 'to', 'its', 'theoretical', 'interest', 'this', 'result', 'is', 'of', 'practical', 'value', 'which', 'we', 'demonstrate', 'by', 'giving', 'significantly', 'improved', 'explicit', 'lower', 'bounds', 'for', 'seshadri', 'constants', 'on', 'p2', 'and', 'new', 'results', 'about', 'ample', 'divisors', 'on', 'blow', 'ups', 'of', 'p2', 'at', 'general', 'points']] | [-0.15528698812704533, 0.02745747528711541, -0.06329200275164719, 0.038677068039154015, -0.10297227218850619, -0.1811207426362671, 0.16251149268807946, 0.3466267232369218, -0.2617339761410322, -0.2055055094986326, 0.10293921628827876, -0.24794447426231475, -0.1005474024439334, 0.3180821085956672, -0.10343321456457488, 0.04640395337001893, 0.031833098160051226, 0.055169584578834474, -0.12276758360692636, -0.320333172657734, 0.36780809486905736, 0.0028458283049985766, 0.22590519596835495, 0.15076331649389532, 0.08752959433736072, -0.036466455998985715, 0.04024791980110523, -0.013264555813899884, -0.22038579612257714, 0.16581652012084508, 0.26125638953655855, 0.06617042248641762, 0.20378775717431885, -0.37082158875030774, -0.19818887723765025, 0.13479901983131035, 0.11660668172407895, 0.07966111545263427, -0.04384193803384227, -0.2211865198914893, 0.09104654585502835, -0.0537320823989123, -0.19944606334643644, -0.11824570812495949, 0.04327199792411799, 0.008296074009396963, -0.2898426631775995, -0.010180095669865195, 0.0372162784936639, 0.15080391152554917, -0.04082015134918038, -0.16336857604134516, 0.013235616798435027, 0.06920295517839906, 0.075857253292472, 0.049058703725071005, 0.06609784031752497, -0.08767315372501293, -0.0662685796398566, 0.36615768626021844, -0.08654350575266613, -0.19074822698409358, 0.15767300641164184, -0.16045731412790096, -0.13456637304948849, 0.18688872751469413, 0.16438843481268528, 0.18165032691063565, -0.02010141972277779, 0.161358812034046, -0.10059499734133068, 0.10343737786630906, 0.14455819303273326, -0.0033471195153348767, 0.14648143463354144, 0.07109050719817686, 0.13518098588004554, 0.05654015773971979, -0.0013569308454558875, -0.08419750416861563, -0.3954334015854531, -0.16903930387666655, -0.1518908195883139, 0.16845449461187753, -0.16430953657881117, -0.11691042011079844, 0.35632621454553576, 0.08251657140337759, 0.25238129417670685, 0.1278008137293606, 0.24202172551304102, 0.07648953014015408, 0.004441395277454931, 0.08611514800254048, 0.21253788435003823, 0.08048784561752756, 0.019013008114092775, -0.12978316193524128, 0.017661626702950645, 0.12391963678075829] |
709.3938 | Correlations in superstatistical systems | We review some of the properties of higher-dimensional superstatistical
stochastic models. As an example, we analyse the stochastic properties of a
superstatistical model of 3-dimensional Lagrangian turbulence, and compare with
experimental data. Excellent agreement is obtained for various measured
quantities, such as acceleration probability densities, Lagrangian scaling
exponents, correlations between acceleration components, and time decay of
correlations. We comment on how to proceed from superstatistics to a
thermodynamic description.
| cond-mat.stat-mech physics.flu-dyn | we review some of the properties of higherdimensional superstatistical stochastic models as an example we analyse the stochastic properties of a superstatistical model of 3dimensional lagrangian turbulence and compare with experimental data excellent agreement is obtained for various measured quantities such as acceleration probability densities lagrangian scaling exponents correlations between acceleration components and time decay of correlations we comment on how to proceed from superstatistics to a thermodynamic description | [['we', 'review', 'some', 'of', 'the', 'properties', 'of', 'higherdimensional', 'superstatistical', 'stochastic', 'models', 'as', 'an', 'example', 'we', 'analyse', 'the', 'stochastic', 'properties', 'of', 'a', 'superstatistical', 'model', 'of', '3dimensional', 'lagrangian', 'turbulence', 'and', 'compare', 'with', 'experimental', 'data', 'excellent', 'agreement', 'is', 'obtained', 'for', 'various', 'measured', 'quantities', 'such', 'as', 'acceleration', 'probability', 'densities', 'lagrangian', 'scaling', 'exponents', 'correlations', 'between', 'acceleration', 'components', 'and', 'time', 'decay', 'of', 'correlations', 'we', 'comment', 'on', 'how', 'to', 'proceed', 'from', 'superstatistics', 'to', 'a', 'thermodynamic', 'description']] | [-0.09736942762063573, 0.12465401135061942, -0.12936757745869135, 0.15543717786541505, -0.009724305915659752, -0.10816040529829005, -0.008564158599229826, 0.3366066255434619, -0.25345467695750407, -0.2839203936493267, 0.02461431971481205, -0.3152147313390953, -0.12053688251467394, 0.21421268927540793, 0.011427726184922283, 0.10204419409991175, 0.019700543658025024, 0.0018904095758562503, -0.11839536092230592, -0.14466940619699334, 0.2898954340540197, 0.0999054654325912, 0.2565807363261347, 0.03565319528992193, 0.10721359858323104, -0.047080869988902756, -0.03145520248031919, 0.07478700216481651, -0.2362836392974292, 0.06195560909902164, 0.20131788124142433, 0.135834075530748, 0.16118066215320773, -0.4375499469916458, -0.23670767824227948, 0.09589821240608243, 0.1351204741150613, 0.09874809376112577, -0.044784928268779986, -0.25853397402966366, -0.019243854367970558, -0.19119050696600173, -0.17341090336549972, -0.15610519944406723, 0.028387039332934048, 0.10333242972948305, -0.24763993020641847, 0.12803311729668707, 0.03521972847427579, 0.07909593812149504, -0.0942941225518513, -0.08720802606177935, 0.003925332801241049, 0.11163165960190953, 0.09296518740534404, -0.022773428579650656, 0.15212285418090396, -0.14272391377016902, -0.1363734171010446, 0.37328594990506553, -0.09877148414017174, -0.21194192826531935, 0.20324703484125758, -0.12362826840979034, -0.1712218998067513, 0.039583251528117966, 0.18084938667606618, 0.07350971933076347, -0.18953534122556448, 0.06820943697011503, -0.02224424726707672, 0.12382008111023385, 0.009348268674659556, 0.069450129902364, 0.16519652483849853, 0.16429142872431735, -0.03273336340066305, 0.13015678823095464, -0.07861699236462405, -0.19816809302816787, -0.37000010545918904, -0.15055890313849069, -0.16524375646469602, 0.09252663244209859, -0.13938926509876762, -0.13560081131594337, 0.3932065977782443, 0.2107985346186636, 0.25889351375509, 0.10578876278579127, 0.27421947398587415, 0.11859400198875886, -0.05276554731139238, 0.03248627618819043, 0.20987479528960556, 0.18733565294710192, 0.0845145373740166, -0.2238728784976284, 0.039833684161683355, 0.10163517438712111] |
709.3939 | Mutations Vs. Seiberg duality | For a quiver with potential, Derksen, Weyman and Zelevinsky defined a
combinatorial transformation - mutations. Mukhopadhyay and Ray, on the other
hand, tell us how to compute Seiberg dual quivers for some quivers with
potentials through a tilting procedure, thus obtaining derived equivalent
algebras. In this text, we compare mutations with the concept of Seiberg
duality, concluding that for a certain class of potentials (the good ones)
mutations coincide with Seiberg duality, therefore giving derived equivalences.
| math.RA hep-th | for a quiver with potential derksen weyman and zelevinsky defined a combinatorial transformation mutations mukhopadhyay and ray on the other hand tell us how to compute seiberg dual quivers for some quivers with potentials through a tilting procedure thus obtaining derived equivalent algebras in this text we compare mutations with the concept of seiberg duality concluding that for a certain class of potentials the good ones mutations coincide with seiberg duality therefore giving derived equivalences | [['for', 'a', 'quiver', 'with', 'potential', 'derksen', 'weyman', 'and', 'zelevinsky', 'defined', 'a', 'combinatorial', 'transformation', 'mutations', 'mukhopadhyay', 'and', 'ray', 'on', 'the', 'other', 'hand', 'tell', 'us', 'how', 'to', 'compute', 'seiberg', 'dual', 'quivers', 'for', 'some', 'quivers', 'with', 'potentials', 'through', 'a', 'tilting', 'procedure', 'thus', 'obtaining', 'derived', 'equivalent', 'algebras', 'in', 'this', 'text', 'we', 'compare', 'mutations', 'with', 'the', 'concept', 'of', 'seiberg', 'duality', 'concluding', 'that', 'for', 'a', 'certain', 'class', 'of', 'potentials', 'the', 'good', 'ones', 'mutations', 'coincide', 'with', 'seiberg', 'duality', 'therefore', 'giving', 'derived', 'equivalences']] | [-0.08726450925072034, 0.0869980435189791, -0.10691473140070835, 0.18086935664061457, -0.12212616749107838, -0.2796223023037116, 0.053409870428343616, 0.35086148225081465, -0.3108552647009492, -0.21772482303902507, 0.03490377877062807, -0.20617564124365648, -0.2240462203199665, 0.14952180673678717, -0.18425745295981566, -0.056133565604686735, 0.07074461044743657, 0.031770855356007814, -0.08734163438115501, -0.32636969883150113, 0.350748238961678, 0.04528140468833347, 0.2533257072418928, 0.03350200012947122, 0.12799953391154606, 0.04369811769574881, -0.04985555628935496, 0.024948078263550996, -0.17694836678963233, 0.15847032512227693, 0.2678344950079918, 0.12242217460026343, 0.10149771775429448, -0.3697170186539491, -0.1297194350992019, 0.1416525561331461, 0.15486585922228793, 0.12580410252635676, -0.08263944218400866, -0.3206666441758474, 0.06465276457369327, -0.18467068262320632, -0.15911981807400782, -0.07060880286153406, 0.06858272931228081, 0.05663869813084602, -0.27537988356004156, -0.027830207605390265, 0.01838759801660975, 0.12192549192657073, -0.10332836978292713, -0.07402925513063868, -0.08863993089646101, 0.09201467524593075, 0.026106302578312656, 0.03982129212468863, 0.10347373667483528, -0.14390175881174702, -0.21984467359259724, 0.29751105399181443, 0.02756645410011212, -0.21424837479988734, 0.22442910481865208, -0.10736294066533446, -0.23735538121312857, 0.0945793176194032, -0.03454493797073761, 0.11298715710639953, -0.11723446492105723, 0.14026992386672646, -0.08699991688442726, -0.018049940389270585, 0.18148039342214664, 0.008392047975212336, 0.1834721444423, 0.04370982635766268, 0.03544514841400087, 0.174370969174585, 0.04240698990412056, -0.08456572658382357, -0.3239632382616401, -0.12922233622521162, -0.036508272228141625, 0.10373424319550395, -0.11574716176798877, -0.1802587958223497, 0.370352804614231, 0.12775742564893638, 0.195676343391339, 0.2022982053955396, 0.13170785784721376, 0.03263768977175156, 0.1184189827553928, -0.06213244798282782, 0.1550356850233705, 0.24413067378103734, 0.052732643149793146, -0.20200838794310888, -0.056527891084551814, 0.27982087501635156] |
709.394 | Constraining the Randall-Sundrum modulus in the light of recent PVLAS
data | Recent PVLAS data put stringent constraints on the measurement of
birefringence and dichroism of electromagnetic waves travelling in a constant
and homogeneous magnetic field. There have been theoretical predictions in
favour of such phenomena when appropriate axion-electromagnetic coupling is
assumed. Origin of such a coupling can be traced in a low energy string action
from the requirement of quantum consistency. The resulting couplings in such
models are an artifact of the compactification of the extra dimensions present
inevitably in a string scenario. The moduli parameters which encode the compact
manifold therefore play a crucial role in determining the axion-photon
coupling. In this work we examine the possible bounds on the value of compact
modulus that emerge from the experimental limits on the coupling obtained from
the PVLAS data. In particular we focus into the Randall-Sundrum (RS) type of
warped geometry model whose modulus parameter is already restricted from the
requirement of the resolution of gauge hierarchy problem in connection with the
mass of the Higgs. We explore the bound on the modulus for a wide range of the
axion mass for both the birefringence and the dichroism data in PVLAS. We show
that the proposed value of the modulus in the RS scenario can only be
accommodated for axion mass $\gsim$ 0.3 eV.
| hep-ph hep-ex hep-th | recent pvlas data put stringent constraints on the measurement of birefringence and dichroism of electromagnetic waves travelling in a constant and homogeneous magnetic field there have been theoretical predictions in favour of such phenomena when appropriate axionelectromagnetic coupling is assumed origin of such a coupling can be traced in a low energy string action from the requirement of quantum consistency the resulting couplings in such models are an artifact of the compactification of the extra dimensions present inevitably in a string scenario the moduli parameters which encode the compact manifold therefore play a crucial role in determining the axionphoton coupling in this work we examine the possible bounds on the value of compact modulus that emerge from the experimental limits on the coupling obtained from the pvlas data in particular we focus into the randallsundrum rs type of warped geometry model whose modulus parameter is already restricted from the requirement of the resolution of gauge hierarchy problem in connection with the mass of the higgs we explore the bound on the modulus for a wide range of the axion mass for both the birefringence and the dichroism data in pvlas we show that the proposed value of the modulus in the rs scenario can only be accommodated for axion mass gsim 03 ev | [['recent', 'pvlas', 'data', 'put', 'stringent', 'constraints', 'on', 'the', 'measurement', 'of', 'birefringence', 'and', 'dichroism', 'of', 'electromagnetic', 'waves', 'travelling', 'in', 'a', 'constant', 'and', 'homogeneous', 'magnetic', 'field', 'there', 'have', 'been', 'theoretical', 'predictions', 'in', 'favour', 'of', 'such', 'phenomena', 'when', 'appropriate', 'axionelectromagnetic', 'coupling', 'is', 'assumed', 'origin', 'of', 'such', 'a', 'coupling', 'can', 'be', 'traced', 'in', 'a', 'low', 'energy', 'string', 'action', 'from', 'the', 'requirement', 'of', 'quantum', 'consistency', 'the', 'resulting', 'couplings', 'in', 'such', 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'wide', 'range', 'of', 'the', 'axion', 'mass', 'for', 'both', 'the', 'birefringence', 'and', 'the', 'dichroism', 'data', 'in', 'pvlas', 'we', 'show', 'that', 'the', 'proposed', 'value', 'of', 'the', 'modulus', 'in', 'the', 'rs', 'scenario', 'can', 'only', 'be', 'accommodated', 'for', 'axion', 'mass', 'gsim', '03', 'ev']] | [-0.15787383349709003, 0.15373133364819125, -0.06039901939440378, 0.06939818101049892, -0.09481525776648612, -0.09341486568017951, 0.055279547792863766, 0.3274215233187138, -0.24265065360902194, -0.3349176895407134, 0.10451478764408198, -0.2182381191545711, -0.10269514903786399, 0.19080990381244534, -0.012376679382111245, 0.02725550139109815, 0.034429956974476365, 0.062118218892104574, -0.05119657094995623, -0.2028651476732262, 0.3442893438875886, 0.05827675486051583, 0.27280348428208734, 0.08090121804721179, 0.07700952446859172, -0.025630340054806956, 0.009923849330626358, 0.009848268584014391, -0.14062835173913385, 0.09527108978253859, 0.18423567455282058, 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709.3941 | The Global Renormalization Group Trajectory in a Critical Supersymmetric
Field Theory on the Lattice Z^3 | We consider an Euclidean supersymmetric field theory in $Z^3$ given by a
supersymmetric $\Phi^4$ perturbation of an underlying massless Gaussian measure
on scalar bosonic and Grassmann fields with covariance the Green's function of
a (stable) L\'evy random walk in $Z^3$. The Green's function depends on the
L\'evy-Khintchine parameter $\alpha={3+\epsilon\over 2}$ with $0<\alpha<2$. For
$\alpha ={3\over 2}$ the $\Phi^{4}$ interaction is marginal. We prove for
$\alpha-{3\over 2}={\epsilon\over 2}>0$ sufficiently small and initial
parameters held in an appropriate domain the existence of a global
renormalization group trajectory uniformly bounded on all renormalization group
scales and therefore on lattices which become arbitrarily fine. At the same
time we establish the existence of the critical (stable) manifold. The
interactions are uniformly bounded away from zero on all scales and therefore
we are constructing a non-Gaussian supersymmetric field theory on all scales.
The interest of this theory comes from the easily established fact that the
Green's function of a (weakly) self-avoiding L\'evy walk in $Z^3$ is a second
moment (two point correlation function) of the supersymmetric measure governing
this model. The control of the renormalization group trajectory is a
preparation for the study of the asymptotics of this Green's function. The
rigorous control of the critical renormalization group trajectory is a
preparation for the study of the critical exponents of the (weakly)
self-avoiding L\'evy walk in $Z^3$.
| math-ph hep-lat hep-th math.MP | we consider an euclidean supersymmetric field theory in z3 given by a supersymmetric phi4 perturbation of an underlying massless gaussian measure on scalar bosonic and grassmann fields with covariance the greens function of a stable levy random walk in z3 the greens function depends on the levykhintchine parameter alpha3epsilonover 2 with 0alpha2 for alpha 3over 2 the phi4 interaction is marginal we prove for alpha3over 2epsilonover 20 sufficiently small and initial parameters held in an appropriate domain the existence of a global renormalization group trajectory uniformly bounded on all renormalization group scales and therefore on lattices which become arbitrarily fine at the same time we establish the existence of the critical stable manifold the interactions are uniformly bounded away from zero on all scales and therefore we are constructing a nongaussian supersymmetric field theory on all scales the interest of this theory comes from the easily established fact that the greens function of a weakly selfavoiding levy walk in z3 is a second moment two point correlation function of the supersymmetric measure governing this model the control of the renormalization group trajectory is a preparation for the study of the asymptotics of this greens function the rigorous control of the critical renormalization group trajectory is a preparation for the study of the critical exponents of the weakly selfavoiding levy walk in z3 | [['we', 'consider', 'an', 'euclidean', 'supersymmetric', 'field', 'theory', 'in', 'z3', 'given', 'by', 'a', 'supersymmetric', 'phi4', 'perturbation', 'of', 'an', 'underlying', 'massless', 'gaussian', 'measure', 'on', 'scalar', 'bosonic', 'and', 'grassmann', 'fields', 'with', 'covariance', 'the', 'greens', 'function', 'of', 'a', 'stable', 'levy', 'random', 'walk', 'in', 'z3', 'the', 'greens', 'function', 'depends', 'on', 'the', 'levykhintchine', 'parameter', 'alpha3epsilonover', '2', 'with', '0alpha2', 'for', 'alpha', '3over', '2', 'the', 'phi4', 'interaction', 'is', 'marginal', 'we', 'prove', 'for', 'alpha3over', '2epsilonover', '20', 'sufficiently', 'small', 'and', 'initial', 'parameters', 'held', 'in', 'an', 'appropriate', 'domain', 'the', 'existence', 'of', 'a', 'global', 'renormalization', 'group', 'trajectory', 'uniformly', 'bounded', 'on', 'all', 'renormalization', 'group', 'scales', 'and', 'therefore', 'on', 'lattices', 'which', 'become', 'arbitrarily', 'fine', 'at', 'the', 'same', 'time', 'we', 'establish', 'the', 'existence', 'of', 'the', 'critical', 'stable', 'manifold', 'the', 'interactions', 'are', 'uniformly', 'bounded', 'away', 'from', 'zero', 'on', 'all', 'scales', 'and', 'therefore', 'we', 'are', 'constructing', 'a', 'nongaussian', 'supersymmetric', 'field', 'theory', 'on', 'all', 'scales', 'the', 'interest', 'of', 'this', 'theory', 'comes', 'from', 'the', 'easily', 'established', 'fact', 'that', 'the', 'greens', 'function', 'of', 'a', 'weakly', 'selfavoiding', 'levy', 'walk', 'in', 'z3', 'is', 'a', 'second', 'moment', 'two', 'point', 'correlation', 'function', 'of', 'the', 'supersymmetric', 'measure', 'governing', 'this', 'model', 'the', 'control', 'of', 'the', 'renormalization', 'group', 'trajectory', 'is', 'a', 'preparation', 'for', 'the', 'study', 'of', 'the', 'asymptotics', 'of', 'this', 'greens', 'function', 'the', 'rigorous', 'control', 'of', 'the', 'critical', 'renormalization', 'group', 'trajectory', 'is', 'a', 'preparation', 'for', 'the', 'study', 'of', 'the', 'critical', 'exponents', 'of', 'the', 'weakly', 'selfavoiding', 'levy', 'walk', 'in', 'z3']] | [-0.15447279255514004, 0.20141206839892398, -0.11796860939628534, 0.08080168758874087, -0.034991520654716314, -0.13310019186055755, 0.02004340643963679, 0.3488585869701936, -0.2395723812031181, -0.19321180467566126, 0.10705970504616714, -0.2790017327310764, -0.128295205980029, 0.14753032505371902, 0.008583465958658401, 0.08050820856359384, -0.023606510769116552, 0.05769598470351204, 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709.3942 | Thermal Dilepton Production Rate from Dropping rho in the Vector
Manifestation | In this write-up we summarize main points of our recent analysis on the
thermal dilepton production rate from the dropping rho based on the vector
manifestation (VM). In the analysis, we studied the effect of the strong
violation of the vector dominance (VD), which is predicted by the VM, and
showed that the effect of the violation of the VD substantially suppresses the
dilepton production rate compared with the one predicted by assuming the VD
together with the dropping rho.
| hep-ph | in this writeup we summarize main points of our recent analysis on the thermal dilepton production rate from the dropping rho based on the vector manifestation vm in the analysis we studied the effect of the strong violation of the vector dominance vd which is predicted by the vm and showed that the effect of the violation of the vd substantially suppresses the dilepton production rate compared with the one predicted by assuming the vd together with the dropping rho | [['in', 'this', 'writeup', 'we', 'summarize', 'main', 'points', 'of', 'our', 'recent', 'analysis', 'on', 'the', 'thermal', 'dilepton', 'production', 'rate', 'from', 'the', 'dropping', 'rho', 'based', 'on', 'the', 'vector', 'manifestation', 'vm', 'in', 'the', 'analysis', 'we', 'studied', 'the', 'effect', 'of', 'the', 'strong', 'violation', 'of', 'the', 'vector', 'dominance', 'vd', 'which', 'is', 'predicted', 'by', 'the', 'vm', 'and', 'showed', 'that', 'the', 'effect', 'of', 'the', 'violation', 'of', 'the', 'vd', 'substantially', 'suppresses', 'the', 'dilepton', 'production', 'rate', 'compared', 'with', 'the', 'one', 'predicted', 'by', 'assuming', 'the', 'vd', 'together', 'with', 'the', 'dropping', 'rho']] | [-0.12981620418140666, 0.14274477616418152, -0.06841974379494786, 0.02171710073016584, 0.006625266443006694, -0.062494088406674565, 0.09552434301003813, 0.2342169127892703, -0.2237506952136755, -0.26396252382546664, 0.03461940437264275, -0.2975527218251955, -0.0801872969197575, 0.1614250542363152, -0.006792586529627442, 0.03623976570088416, 0.03914380586938933, 0.08059515719069169, -0.05558699536777567, -0.24947190883976872, 0.3592330610845238, 0.07957277464447543, 0.31534637813456357, 0.1269886517082341, 0.05346196814789437, 0.04490655743866227, -0.10667523098381934, 0.022858242422807963, -0.12650071591242523, 0.08486320979427546, 0.10897091936785727, 0.10843243306735531, 0.18791946613928304, -0.36419961859937755, -0.20710218523163348, 0.10296268035308458, 0.0893691650708206, 0.06151188251533313, -0.07143105007708073, -0.2884751403820701, 0.15587480697140563, -0.17507972181774675, -0.07959226066013798, 0.023293788987211884, 0.006070007145171985, -0.014712793150101789, -0.28075821860693395, 0.12539227214874699, 0.0547398776630871, 0.027930253741214984, -0.062089458643458786, -0.1838758219499141, -0.06875874426623341, 0.017814465117407963, 0.13420459315238986, 0.09530024280247744, 0.16383318297448568, -0.16647049724997487, -0.1374875644571148, 0.3961583848576993, -0.13160248899366705, -0.13283216035924852, 0.1892043920379365, -0.17175526772625743, -0.11392767824581825, 0.11350601111771538, 0.18768008581828327, 0.09254363744985313, -0.11193683583987876, 0.07320289723502356, -0.03658773964270949, 0.12161909350252245, 0.0384813240612857, 0.042986780713545156, 0.15479476968757808, 0.1745783363468945, 0.003649384086020291, 0.12056004453916103, -0.12129639283230062, -0.06938707617809996, -0.37270200860220937, -0.14486083280062304, -0.13668531065341086, 0.05405252874188591, -0.06170992537499842, -0.0432872983510606, 0.3741020450077485, 0.14961342320311816, 0.2684692122740671, 0.02938455412077019, 0.30368332340149207, 0.17297685559169623, 0.08879387912456878, 0.11560746055911295, 0.31185813817428426, 0.12217025507125072, 0.12637878337991423, -0.309278950488806, 0.1284290297611733, 0.05297741517424583] |
709.3943 | Constructing QFT's wherein Lorentz Invariance is broken by dissipative
effects in the UV | There has been a recent interest in considering Quantum Field Theories in
which Lorentz Invariance is broken in the UV sector. However attention has been
mostly limited to dispersive theories. In this work we provide the generalized
settings for studying dissipation. Unitarity is preserved by coupling the
original fields to additional (heavy) fields which induce the dissipation.
Starting with Lagrangians breaking LI in the UV, we learn that dissipative
effects unavoidably develop in the effective theory. We then covariantize these
Lagrangians in order to address the trans-Planckian question of inflation and
black hole physics. The peculiar properties of the additional fields inducing
dissipation is revealed by the covariantization. The links with the
phenomenological approach to Quantum Gravity and with some Brane World
scenarios are also discussed.
| hep-th gr-qc | there has been a recent interest in considering quantum field theories in which lorentz invariance is broken in the uv sector however attention has been mostly limited to dispersive theories in this work we provide the generalized settings for studying dissipation unitarity is preserved by coupling the original fields to additional heavy fields which induce the dissipation starting with lagrangians breaking li in the uv we learn that dissipative effects unavoidably develop in the effective theory we then covariantize these lagrangians in order to address the transplanckian question of inflation and black hole physics the peculiar properties of the additional fields inducing dissipation is revealed by the covariantization the links with the phenomenological approach to quantum gravity and with some brane world scenarios are also discussed | [['there', 'has', 'been', 'a', 'recent', 'interest', 'in', 'considering', 'quantum', 'field', 'theories', 'in', 'which', 'lorentz', 'invariance', 'is', 'broken', 'in', 'the', 'uv', 'sector', 'however', 'attention', 'has', 'been', 'mostly', 'limited', 'to', 'dispersive', 'theories', 'in', 'this', 'work', 'we', 'provide', 'the', 'generalized', 'settings', 'for', 'studying', 'dissipation', 'unitarity', 'is', 'preserved', 'by', 'coupling', 'the', 'original', 'fields', 'to', 'additional', 'heavy', 'fields', 'which', 'induce', 'the', 'dissipation', 'starting', 'with', 'lagrangians', 'breaking', 'li', 'in', 'the', 'uv', 'we', 'learn', 'that', 'dissipative', 'effects', 'unavoidably', 'develop', 'in', 'the', 'effective', 'theory', 'we', 'then', 'covariantize', 'these', 'lagrangians', 'in', 'order', 'to', 'address', 'the', 'transplanckian', 'question', 'of', 'inflation', 'and', 'black', 'hole', 'physics', 'the', 'peculiar', 'properties', 'of', 'the', 'additional', 'fields', 'inducing', 'dissipation', 'is', 'revealed', 'by', 'the', 'covariantization', 'the', 'links', 'with', 'the', 'phenomenological', 'approach', 'to', 'quantum', 'gravity', 'and', 'with', 'some', 'brane', 'world', 'scenarios', 'are', 'also', 'discussed']] | [-0.15805505277840273, 0.19056794419884682, -0.08314830058675614, 0.10946300694726348, -0.10642842844956452, -0.1647750418965838, -0.01946757125598009, 0.3419211225598932, -0.23541585173058724, -0.3065782942853513, 0.06283217988028708, -0.2423605921988686, -0.15163685190713122, 0.13941923924167418, -0.07574671664319578, 0.04403544496375299, -0.025054988961312034, 0.019430856463649043, -0.049569804980863066, -0.2546018994679408, 0.343185519975137, 0.06194005298727591, 0.24091175945460916, 0.07635398877281992, 0.06752387839942313, -0.02898688993919345, 0.0013712992021326152, 0.03506547895570596, -0.14261365101871584, 0.11046177366497142, 0.2235807203613813, 0.07010085677121958, 0.2361455833066314, -0.4475913852423666, -0.31166368441116654, 0.0932988570781336, 0.10397710029538425, 0.17990114068102447, -0.09076457619223566, -0.3005066627991341, 0.03930553963910493, -0.1621731294851218, -0.13127850198615637, -0.10474930601268416, 0.01595323295646628, -0.07907546277339053, -0.23397238546657184, 0.06315307406429571, 0.06006984526775629, 0.05166125022954056, -0.03016864717198861, -0.021830210497321947, -0.019797496805300137, 0.06691946401926023, 0.17168551073077, 0.027408007998019457, 0.12037689249504298, -0.1971964053403113, -0.11354234764566792, 0.4143972714091577, -0.06176432737034731, -0.187639427748287, 0.19378997355566493, -0.14571113462027693, -0.18322924460609635, 0.08903994918837847, 0.12891964320535032, 0.08550358919005487, -0.1725386014875276, 0.19919920300913324, 0.0019987202545125333, 0.10060593302893851, 0.07688767540948613, 0.09884865945833365, 0.25634855887896957, 0.10815615896717645, 0.0059196303214227395, 0.1155274470876311, -0.014873684056857158, -0.12696078535731112, -0.3370726755007155, -0.0967095222431309, -0.13682862431446594, 0.08234999818708434, -0.05887482186113226, -0.11511398138377228, 0.37413859700724955, 0.18537868108112543, 0.16817564358343445, -0.028791905445460644, 0.25358373264870826, 0.13535801896507602, 0.10620840108678085, 0.05923692365029147, 0.33154414500787094, 0.1581886611326361, 0.10586588417128143, -0.22111799555372388, -0.032425653613505086, 0.06772759931701576] |
709.3944 | Lepton Flavour Violating Decays in the Littlest Higgs Model with
T-Parity | We present the results of an extensive analysis of lepton flavour violating
decays in the Littlest Higgs model with T-parity (LHT). As lepton flavour
violation is highly suppressed in the Standard Model by small neutrino masses,
the LHT effects turn out to be naturally huge and could be seen in the near
future experiments.
| hep-ph | we present the results of an extensive analysis of lepton flavour violating decays in the littlest higgs model with tparity lht as lepton flavour violation is highly suppressed in the standard model by small neutrino masses the lht effects turn out to be naturally huge and could be seen in the near future experiments | [['we', 'present', 'the', 'results', 'of', 'an', 'extensive', 'analysis', 'of', 'lepton', 'flavour', 'violating', 'decays', 'in', 'the', 'littlest', 'higgs', 'model', 'with', 'tparity', 'lht', 'as', 'lepton', 'flavour', 'violation', 'is', 'highly', 'suppressed', 'in', 'the', 'standard', 'model', 'by', 'small', 'neutrino', 'masses', 'the', 'lht', 'effects', 'turn', 'out', 'to', 'be', 'naturally', 'huge', 'and', 'could', 'be', 'seen', 'in', 'the', 'near', 'future', 'experiments']] | [-0.06070411244959191, 0.30827217171625104, 0.012548411144288603, 0.20777274907299284, -0.11419713331593408, -0.22773334104567766, 0.04000874561973399, 0.26167114636498606, -0.22395368566288165, -0.2879618457432284, 0.01733450532278598, -0.31721662363054715, -0.027355089093799943, 0.12087347893975675, 0.016779701984315006, 0.08527867285603727, 0.08859901858657529, -0.08324263019582119, -0.053013647337340646, -0.25508704496099166, 0.224388287006015, 0.11592673816442213, 0.19015573124677218, 0.13402011099754385, -0.04472584422263834, -0.06698055830094274, -0.06497620328984878, -0.03498373066799508, -0.04815174404615795, 0.015239876488016712, 0.19399452126688427, 0.09620462396803002, 0.04026814253517875, -0.3944287147993843, -0.15149987961545033, 0.2452324194902623, 0.17063768872456556, 0.11159286097864862, -0.0996004372007317, -0.40756262466311455, 0.09238614650611351, -0.25594123479634245, -0.10247065507185955, -0.12132091962525414, -0.10649355124958136, -0.1550783791096398, -0.3936486923377271, 0.06135190726706275, -0.07590938971757337, 0.006479677209561622, 0.08891329555599778, -0.16822136659175158, -0.07719018493123629, -0.017903944908606785, 0.26784861143850897, 0.0013747648077292575, 0.16564853713175076, -0.21501847584214476, -0.24222620600765501, 0.45911497391622375, -0.1313882347377431, -0.19217891262895945, 0.1262702563027334, -0.21511894815463434, -0.21676712769463105, 0.09330003202409932, 0.2699509950320202, 0.0376378765364212, -0.1811760930361709, 0.20232118128829082, -0.13464032180814278, 0.13632696880786507, -0.016567113209964224, 0.03486348460945818, 0.30890977618077564, 0.27909837338935445, 0.045056337667456654, 0.04873653361573815, -0.0884618934813059, -0.042216374193904574, -0.4714056187680129, -0.11390960052678431, -0.04625253682887113, 0.041057960684325, -0.07469614965089864, -0.0596292691167306, 0.4229210441289642, 0.1279547189845255, 0.27390116082366417, -0.015083788618169449, 0.27617162164231696, 0.05717473333761855, 0.13288107183244494, -0.0095408592476613, 0.33714424649736396, 0.0957217500243267, 0.13939702748838398, -0.2887065228919878, 0.05844368214753491, 0.027038442333125405] |
709.3945 | Nonlinearly driven Landau-Zener transition with telegraph noise | We study Landau-Zener like dynamics of a qubit influenced by transverse
random telegraph noise. The telegraph noise is characterized by its coupling
strength, $v$ and switching rate, $\gamma$. The qubit energy levels are driven
nonlinearly in time, $\propto \sign(t)|t|^\nu$, and we derive the transition
probability in the limit of sufficiently fast noise, for arbitrary exponent
$\nu$. The longitudinal coherence after transition depends strongly on $\nu$,
and there exists a critical $\nu_c$ with qualitative difference between $\nu<
\nu_c$ and $\nu > \nu_c$. When $\nu<\nu_c$ the end state is always fully
incoherent with equal population of both quantum levels, even for arbitrarily
weak noise. For $\nu>\nu_c$ the system keeps some coherence depending on the
strength of the noise, and in the limit of weak noise no transition takes
place. For fast noise $\nu_c=1/2$, while for slow noise $\nu_c<1/2$ and it
depends on $\gamma$. We also discuss transverse coherence, which is relevant
when the qubit has a nonzero minimum energy gap. The qualitative dependency on
$\nu$ is the same for transverse as for longitudinal coherence. The state after
transition does in general depend on $\gamma$. For fixed $v$, increasing
$\gamma$ decreases the final state coherence when $\nu<1$ and increase the
final state coherence when $\nu>1$. Only the conventional linear driving is
independent of $\gamma$.
| cond-mat.other | we study landauzener like dynamics of a qubit influenced by transverse random telegraph noise the telegraph noise is characterized by its coupling strength v and switching rate gamma the qubit energy levels are driven nonlinearly in time propto signttnu and we derive the transition probability in the limit of sufficiently fast noise for arbitrary exponent nu the longitudinal coherence after transition depends strongly on nu and there exists a critical nu_c with qualitative difference between nu nu_c and nu nu_c when nunu_c the end state is always fully incoherent with equal population of both quantum levels even for arbitrarily weak noise for nunu_c the system keeps some coherence depending on the strength of the noise and in the limit of weak noise no transition takes place for fast noise nu_c12 while for slow noise nu_c12 and it depends on gamma we also discuss transverse coherence which is relevant when the qubit has a nonzero minimum energy gap the qualitative dependency on nu is the same for transverse as for longitudinal coherence the state after transition does in general depend on gamma for fixed v increasing gamma decreases the final state coherence when nu1 and increase the final state coherence when nu1 only the conventional linear driving is independent of gamma | [['we', 'study', 'landauzener', 'like', 'dynamics', 'of', 'a', 'qubit', 'influenced', 'by', 'transverse', 'random', 'telegraph', 'noise', 'the', 'telegraph', 'noise', 'is', 'characterized', 'by', 'its', 'coupling', 'strength', 'v', 'and', 'switching', 'rate', 'gamma', 'the', 'qubit', 'energy', 'levels', 'are', 'driven', 'nonlinearly', 'in', 'time', 'propto', 'signttnu', 'and', 'we', 'derive', 'the', 'transition', 'probability', 'in', 'the', 'limit', 'of', 'sufficiently', 'fast', 'noise', 'for', 'arbitrary', 'exponent', 'nu', 'the', 'longitudinal', 'coherence', 'after', 'transition', 'depends', 'strongly', 'on', 'nu', 'and', 'there', 'exists', 'a', 'critical', 'nu_c', 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709.3946 | D* K molecular structure of the Ds1(2460) meson | We discuss a possible interpretation of the Ds1(2460) meson as a hadronic
molecule - a bound state of D* and K mesons. Using a phenomenological
Lagrangian approach we determine the strong Ds1 to Ds* pi0 and radiative Ds1 to
Ds gamma decays. In order of magnitude our results for the partial strong and
radiative decay widths are consistent with previous calculations.
| hep-ph | we discuss a possible interpretation of the ds12460 meson as a hadronic molecule a bound state of d and k mesons using a phenomenological lagrangian approach we determine the strong ds1 to ds pi0 and radiative ds1 to ds gamma decays in order of magnitude our results for the partial strong and radiative decay widths are consistent with previous calculations | [['we', 'discuss', 'a', 'possible', 'interpretation', 'of', 'the', 'ds12460', 'meson', 'as', 'a', 'hadronic', 'molecule', 'a', 'bound', 'state', 'of', 'd', 'and', 'k', 'mesons', 'using', 'a', 'phenomenological', 'lagrangian', 'approach', 'we', 'determine', 'the', 'strong', 'ds1', 'to', 'ds', 'pi0', 'and', 'radiative', 'ds1', 'to', 'ds', 'gamma', 'decays', 'in', 'order', 'of', 'magnitude', 'our', 'results', 'for', 'the', 'partial', 'strong', 'and', 'radiative', 'decay', 'widths', 'are', 'consistent', 'with', 'previous', 'calculations']] | [-0.10061381527533134, 0.17718679003883153, -0.07489320049062372, 0.11023265169157336, -0.06889650371546546, -0.11751141507799427, 0.11722887115950774, 0.33321226490661504, -0.17807190843547385, -0.23124335982526342, -0.04042489144291418, -0.33463185974396764, -7.774181043108304e-05, 0.10456472540196653, 0.11852276114126047, 0.11477716607041658, 0.07403674516826868, 0.050601564984147744, -0.08493078138465839, -0.11378147163583587, 0.2907863906274239, -0.016634072021891672, 0.1427480581837396, 0.15275856790443262, -0.031110566350010534, -0.04043987598270178, -0.04312862850880871, -0.020930640818551182, -0.21606494802205514, 0.07934726011008024, 0.18359847496806955, 0.08719645891105757, 0.12860291382918757, -0.3588028458878398, -0.15031943935512876, 0.09426759690977633, 0.16756787012175967, 0.12697197605933372, 0.005638868493891399, -0.3297735209266345, 0.14934984777743618, -0.16673136576234052, -0.10153617699009677, -0.12315501581567029, 0.04763785088434815, -0.07546909536855916, -0.35454664813975495, 0.07954059753877421, -0.0027926945864843824, 0.002002262392852572, -0.06809810209476079, -0.23905749608917784, -0.0014619956995981435, 0.00835855711872379, 0.12669903972224952, 0.12934640523356697, 0.12499974567132692, -0.11505924890128275, -0.16165501866489648, 0.39600945307562746, -0.12856956483835044, -0.1526054778136313, 0.1584320224666347, -0.14998983687789103, -0.11785569756757468, 0.1810586638127764, 0.1664806197397411, 0.12184387103964885, -0.11534801428206265, 0.09061546856246423, -0.04168863029529651, 0.16702707034225264, 0.04349472088894497, 0.10789559149804215, 0.12774844538653268, 0.16252687436838945, -0.061565528134815396, 0.07531340080701436, -0.07964129803391794, -0.07775457658281085, -0.3755732468639811, -0.17536465380981098, -0.06189645446526507, 0.11451077438735714, -0.06195099409451359, -0.08835110455596198, 0.34091752965856964, 0.03387331911362708, 0.2612247223655383, 0.036229629104491325, 0.2995115314920743, 0.09769897947553545, 0.005413235180700819, 0.08161001858922343, 0.29421982302640876, 0.2443309527821839, 0.0705091206356883, -0.32356153732786574, -0.004268541722558439, 0.05711456904343019] |
709.3947 | Lorentz transformations in de Sitter relativity | The properties of Lorentz transformations in de Sitter relativity are
studied. It is shown that, in addition to leaving invariant the velocity of
light, they also leave invariant the length-scale related to the curvature of
the de Sitter spacetime. The basic conclusion is that it is possible to have an
invariant length parameter without breaking the Lorentz symmetry. This result
may have important implications for the study of quantum kinematics, and in
particular for quantum gravity.
| gr-qc hep-th | the properties of lorentz transformations in de sitter relativity are studied it is shown that in addition to leaving invariant the velocity of light they also leave invariant the lengthscale related to the curvature of the de sitter spacetime the basic conclusion is that it is possible to have an invariant length parameter without breaking the lorentz symmetry this result may have important implications for the study of quantum kinematics and in particular for quantum gravity | [['the', 'properties', 'of', 'lorentz', 'transformations', 'in', 'de', 'sitter', 'relativity', 'are', 'studied', 'it', 'is', 'shown', 'that', 'in', 'addition', 'to', 'leaving', 'invariant', 'the', 'velocity', 'of', 'light', 'they', 'also', 'leave', 'invariant', 'the', 'lengthscale', 'related', 'to', 'the', 'curvature', 'of', 'the', 'de', 'sitter', 'spacetime', 'the', 'basic', 'conclusion', 'is', 'that', 'it', 'is', 'possible', 'to', 'have', 'an', 'invariant', 'length', 'parameter', 'without', 'breaking', 'the', 'lorentz', 'symmetry', 'this', 'result', 'may', 'have', 'important', 'implications', 'for', 'the', 'study', 'of', 'quantum', 'kinematics', 'and', 'in', 'particular', 'for', 'quantum', 'gravity']] | [-0.160503130750026, 0.21652107231956938, -0.16124455872187882, 0.10253271095050302, -0.10171866252724278, -0.10959692436613534, -0.09527596104032311, 0.3429794362439823, -0.22796134162988319, -0.2593142995855918, 0.08019416451631849, -0.2125218274488457, -0.15857587323377006, 0.18209864062526704, -0.06453390777307122, 0.0774860101090254, -0.052278509535091486, 0.08112173922065842, -0.09002149811146266, -0.24485463365042387, 0.36160076061557783, 0.12114661811593626, 0.2727064407969776, 0.03156309835245147, 0.08490949264408923, -0.02805881990475188, -0.018228875044243115, 0.019742008053550596, -0.16731952611869355, 0.03758791962785548, 0.21633252773531958, 0.10285334062370423, 0.1795772648489985, -0.36536914877299415, -0.2302982788165345, 0.0902173214065107, 0.12800469788060964, 0.16116197214968883, -0.07227087097463052, -0.32454919842022817, 0.08217957372605604, -0.1047239363695936, -0.1982571251053167, -0.07791402886964773, 0.06430576717186916, -0.11441223247675225, -0.15048830410906752, 0.10067556201331747, 0.09862582751329203, 0.016087975340748305, -0.044372148707656094, -0.023557620507505674, -0.05190811937331761, 0.1017232940679318, 0.15776747124772028, 0.027526762125106824, 0.13609238981275426, -0.12117256511823814, -0.09738897725229005, 0.4431757081888224, -0.03592923429402474, -0.23242828412912786, 0.16571681667119265, -0.16498504914220816, -0.18300314134256424, 0.09579783959902431, 0.1307152780753217, 0.10923915817157219, -0.11948163041501846, 0.1952100794043968, -0.03791955290637959, 0.1291035178215488, 0.1316842390898321, 0.09466225938185265, 0.21671469293926893, 0.04502636352615235, 0.07988011522684246, 0.07873862074982178, -0.034449408468055095, -0.1380949875862203, -0.3717161864042282, -0.22465007174392476, -0.12874133753173642, 0.08888509868350077, -0.10167785577677453, -0.15829738561105364, 0.3407983645202445, 0.13906256276899703, 0.1732424973069053, 0.0003950260334501141, 0.2193154715994177, 0.08939260339339901, 0.09144876586689957, 0.06586719339247793, 0.3190693368547057, 0.1330123888282718, 0.07623752190939788, -0.2634419921087101, 0.009770451824327833, 0.07047902097876527] |
709.3948 | Rho meson condensation at finite isospin chemical potential in a
holographic model for QCD | We analyze the effect of an isospin chemical potential \mu_I in the
Sakai-Sugimoto model, which is the string dual of a confining gauge theory
related to large N_c QCD, at temperatures below the chiral symmetry restoration
temperature. For small chemical potentials we show that the results agree with
expectations from the low-energy chiral Lagrangian, and the charged pion
condenses. When the chemical potential reaches a critical value \mu_I =
\mu_{crit} ~ 1.7 m_{\rho}, the lowest vector meson (the "rho meson") becomes
massless, and it condenses (in addition to the pion condensate) for \mu_I >
\mu_{crit}. This spontaneously breaks the rotational symmetry, as well as a
residual U(1) flavor symmetry. We numerically construct the resulting new
ground state for \mu_I > \mu_{crit}.
| hep-th hep-lat hep-ph | we analyze the effect of an isospin chemical potential mu_i in the sakaisugimoto model which is the string dual of a confining gauge theory related to large n_c qcd at temperatures below the chiral symmetry restoration temperature for small chemical potentials we show that the results agree with expectations from the lowenergy chiral lagrangian and the charged pion condenses when the chemical potential reaches a critical value mu_i mu_crit 17 m_rho the lowest vector meson the rho meson becomes massless and it condenses in addition to the pion condensate for mu_i mu_crit this spontaneously breaks the rotational symmetry as well as a residual u1 flavor symmetry we numerically construct the resulting new ground state for mu_i mu_crit | [['we', 'analyze', 'the', 'effect', 'of', 'an', 'isospin', 'chemical', 'potential', 'mu_i', 'in', 'the', 'sakaisugimoto', 'model', 'which', 'is', 'the', 'string', 'dual', 'of', 'a', 'confining', 'gauge', 'theory', 'related', 'to', 'large', 'n_c', 'qcd', 'at', 'temperatures', 'below', 'the', 'chiral', 'symmetry', 'restoration', 'temperature', 'for', 'small', 'chemical', 'potentials', 'we', 'show', 'that', 'the', 'results', 'agree', 'with', 'expectations', 'from', 'the', 'lowenergy', 'chiral', 'lagrangian', 'and', 'the', 'charged', 'pion', 'condenses', 'when', 'the', 'chemical', 'potential', 'reaches', 'a', 'critical', 'value', 'mu_i', 'mu_crit', '17', 'm_rho', 'the', 'lowest', 'vector', 'meson', 'the', 'rho', 'meson', 'becomes', 'massless', 'and', 'it', 'condenses', 'in', 'addition', 'to', 'the', 'pion', 'condensate', 'for', 'mu_i', 'mu_crit', 'this', 'spontaneously', 'breaks', 'the', 'rotational', 'symmetry', 'as', 'well', 'as', 'a', 'residual', 'u1', 'flavor', 'symmetry', 'we', 'numerically', 'construct', 'the', 'resulting', 'new', 'ground', 'state', 'for', 'mu_i', 'mu_crit']] | [-0.10630607138324179, 0.3098521167741995, -0.07378510526246113, 0.08284478007346137, -0.014548420221505001, -0.12967101711397752, 0.09001408415372905, 0.31431335347712547, -0.1729039988673539, -0.19848838481956568, 0.014503474174162898, -0.30230022165287507, -0.05041227974276194, -0.018787385336656727, 0.067482856548049, 0.0464263636395972, -0.08872658834179752, 0.10938487380979837, -0.09857329727612181, -0.19305695714349422, 0.3121486219943652, -0.03979213799262404, 0.26014157413290095, 0.18133107031512463, 0.04919674645504381, -0.02541484224060789, 0.09700055348758514, -0.054789735103806116, -0.12772782059202545, -0.02208209114196973, 0.16652330013915387, -0.02306150048811976, 0.11095422607424676, -0.3633302009194835, -0.1989744503894805, 0.13919204170218644, 0.15395369259919175, 0.20176237436612415, -0.07039993134542154, -0.2960560871526981, 0.07996350053387384, -0.1751391408730171, -0.2623161102225208, -0.15657654717469063, 0.015460225801246289, -0.07154826380503483, -0.32338650465712077, 0.12886539137619746, -0.0617192376884592, 0.07606802522563018, -0.10080306362519917, -0.23471263902755374, -0.10686247577118632, 0.06704151869326647, 0.1354817622818817, 0.1312063084457579, 0.19311544858615717, -0.2226963007134091, -0.026462743257801246, 0.4699938221492319, -0.0998538623834586, -0.12987565635265702, 0.11356952967536119, -0.13206061999299604, -0.1583512966107163, 0.13256352953612804, 0.12202785485105701, 0.07568538750115877, -0.13007275746504948, 0.16369971413957354, -0.04142832724202392, 0.16556868293625104, 0.06684282746834633, 0.03073400027381304, 0.24439159341347524, 0.16432311438008124, 0.027743575752227224, 0.0954353794013747, -0.06138674459921626, -0.1503332630993846, -0.3898070067581203, -0.09054025691241407, -0.15626777381373522, 0.07883116418225133, -0.12529209585294215, -0.10976217739268118, 0.3656045134919576, 0.12506711857321745, 0.23527969230507684, 0.027966267342726964, 0.27355673492082166, 0.11781581709535521, 0.09605693217749015, 0.06327827819762354, 0.22354842168398392, 0.192176558317131, 0.16291769174858928, -0.3401875139082758, -0.12761260613671735, 0.10158297865010767] |
709.3949 | Lyapunov Coefficients for Degenerate Hopf Bifurcations | In this paper are studied the codimensions one, two, three and four Hopf
bifurcations and the pertinent Lyapunov stability coefficients. Algebraic
expressions obtained with computer assisted calculations are displayed.
| math.DS | in this paper are studied the codimensions one two three and four hopf bifurcations and the pertinent lyapunov stability coefficients algebraic expressions obtained with computer assisted calculations are displayed | [['in', 'this', 'paper', 'are', 'studied', 'the', 'codimensions', 'one', 'two', 'three', 'and', 'four', 'hopf', 'bifurcations', 'and', 'the', 'pertinent', 'lyapunov', 'stability', 'coefficients', 'algebraic', 'expressions', 'obtained', 'with', 'computer', 'assisted', 'calculations', 'are', 'displayed']] | [-0.2685135115451854, 0.09245869337484755, -0.056435635506079114, 0.09330441216247734, -0.022709491359599834, -0.22090807618123703, -0.07438027611050498, 0.3008379591950055, -0.2675389179895664, -0.22642798541948714, 0.18437178453414477, -0.2835117602913544, -0.2552937189566678, 0.2790288676844974, 0.009274048794960153, 0.09911890783957367, 0.043187304335678446, 0.07561682877612524, -0.0748260255646089, -0.2823498260615201, 0.36665170138766023, -0.07413110920581324, 0.22739028175971632, 0.004728828267804508, 0.03811274240885315, -0.038159470073878765, -0.10147380758205364, 0.04146993616274718, -0.25615023975742274, 0.13390544564302626, 0.31640055120505134, 0.011378472539443716, 0.1943556477540526, -0.417450083612368, -0.1388573677054253, 0.03437343997688129, 0.19964425249731746, 0.08874935949028566, -0.03204449388230669, -0.2500332051823879, 0.08038326690037703, -0.16867961365215736, -0.12721512068448396, -0.13080897288204268, -0.039393401158780886, 0.0341370515525341, -0.23978174959534201, 0.029765046715479474, 0.02866102650697375, 0.21317233786499729, -0.10631784989402213, -0.1227341447756144, -0.09497523012346235, 0.14235009998083115, 0.04680765388083869, -0.1046149199186214, 0.13221179449866557, -0.06743238215206256, -0.19471760306121974, 0.3106445325859662, 0.03306900517180048, -0.24420394029082923, 0.2273093621961066, -0.1598290885509602, -0.18267375629009872, 0.12243209808165657, 0.051235588973966135, 0.12448917753223715, -0.15025306518735557, 0.06477260727290834, 0.012327959809195379, 0.019260157863127774, 0.18250539298329888, 0.04692813946769155, 0.09843406299578733, 0.07365132887558691, -0.08026704574324961, 0.15553530761650924, -0.023238741118332434, -0.19379554165462995, -0.2705284959540285, -0.08607015381406607, -0.10092047222986303, 0.020993299525359582, -0.10917126923570698, -0.0930336723425265, 0.4660904764615256, 0.05759989826715198, 0.16134316073570015, 0.08059970735861309, 0.2661883846439164, 0.1369197872178308, -0.04073395459623686, 0.044829425755245934, 0.2524588684840449, 0.18530956636471996, 0.12125900413455634, -0.18794502592485013, -0.009731222136781133, 0.2023122563380106] |
709.395 | Vacuum configurations for renormalizable non-commutative scalar models | In this paper we find non-trivial vacuum states for the renormalizable
non-commutative $\phi^4$ model. An associated linear sigma model is then
considered. We further investigate the corresponding spontaneous symmetry
breaking.
| hep-th math-ph math.MP | in this paper we find nontrivial vacuum states for the renormalizable noncommutative phi4 model an associated linear sigma model is then considered we further investigate the corresponding spontaneous symmetry breaking | [['in', 'this', 'paper', 'we', 'find', 'nontrivial', 'vacuum', 'states', 'for', 'the', 'renormalizable', 'noncommutative', 'phi4', 'model', 'an', 'associated', 'linear', 'sigma', 'model', 'is', 'then', 'considered', 'we', 'further', 'investigate', 'the', 'corresponding', 'spontaneous', 'symmetry', 'breaking']] | [-0.14658512119203806, 0.1858791767624401, -0.006419759119550387, 0.1491549731232226, -0.057974506402388215, -0.16537421873460215, -0.03190216964964444, 0.34585275935630005, -0.2713602108259996, -0.1725781476435562, 0.04659174281405285, -0.2515062634522716, -0.2256865301479896, 0.03616636108296613, -0.013375859210888545, 0.06062009756763776, -0.09229392292909325, 0.056450182820359865, -0.09642203555752833, -0.1863680811909338, 0.3508625347788135, 0.01094507963086168, 0.2731039626989514, 0.06776983509771525, 0.10392857979362209, -0.04562270293633143, 0.01742810816892112, -0.06065707531136771, -0.20000920481979848, 0.05204341039643623, 0.14435141943395138, 0.01214631797435383, 0.16721512228250504, -0.4317833995446563, -0.21201663175597787, 0.18282430154892307, 0.13394021100054185, 0.1971142215654254, -0.052496854588389395, -0.3242442284400264, 0.0823301599205782, -0.23871860901514688, -0.17685314944634836, -0.09649010418603818, -0.017370550132667025, -0.1850529033690691, -0.29006792375973117, 0.09429435376077891, 0.052834472494820754, 0.07131080937882264, -0.0775968429632485, -0.016157544202481708, -0.07758198554317157, -0.008803660701960325, 0.09999266910987596, 0.009942905915280183, 0.04791246235448246, -0.16156328735717881, -0.17467438809884092, 0.4095957741762201, -0.09878274987762173, -0.2337815170797209, 0.09494238862146934, -0.1039338329496483, -0.20651254342713704, 0.0730728345612685, 0.17532522653539975, 0.11759609769408902, -0.11500571587433418, 0.2255482203948001, -0.10589721923073132, 0.189107982100298, 0.04710553313295047, 0.012850134214386345, 0.20700649383167427, 0.11251114507516226, 0.03532900956148902, 0.2230421635011832, 8.984623903719087e-05, -0.15544024207629265, -0.4652396559715271, -0.11965500749647617, -0.1078316375768433, 0.08727714964188635, -0.07310333629138768, -0.13735137035449346, 0.4485844012349844, 0.16728193204229078, 0.1649306670917819, 0.07306366506963968, 0.1645098239959528, 0.21459410699705284, 0.015938392809281745, 0.0013162856300671895, 0.24350206122423212, 0.11133597816030184, -0.0002052921801805496, -0.2705584699831282, -0.1041806410998106, 0.08082860593373577] |
709.3951 | Geometric Measure of Indistinguishability for Groups of Identical
Particles | The concept of p-orthogonality (1=< p =< n) between n-particle states is
introduced. It generalizes common orthogonality, which is equivalent to
n-orthogonality, and strong orthogonality between fermionic states, which is
equivalent to 1-orthogonality. Within the class of non p-orthogonal states a
finer measure of non p-orthogonality is provided by Araki's angles between
p-internal spaces. The p-orthogonality concept is a geometric measure of
indistinguishability that is independent of the representation chosen for the
quantum states. It induces a new hierarchy of approximations for group function
methods. The simplifications that occur in the calculation of matrix elements
between p-orthogonal group functions are presented.
| quant-ph math-ph math.MP | the concept of porthogonality 1 p n between nparticle states is introduced it generalizes common orthogonality which is equivalent to northogonality and strong orthogonality between fermionic states which is equivalent to 1orthogonality within the class of non porthogonal states a finer measure of non porthogonality is provided by arakis angles between pinternal spaces the porthogonality concept is a geometric measure of indistinguishability that is independent of the representation chosen for the quantum states it induces a new hierarchy of approximations for group function methods the simplifications that occur in the calculation of matrix elements between porthogonal group functions are presented | [['the', 'concept', 'of', 'porthogonality', '1', 'p', 'n', 'between', 'nparticle', 'states', 'is', 'introduced', 'it', 'generalizes', 'common', 'orthogonality', 'which', 'is', 'equivalent', 'to', 'northogonality', 'and', 'strong', 'orthogonality', 'between', 'fermionic', 'states', 'which', 'is', 'equivalent', 'to', '1orthogonality', 'within', 'the', 'class', 'of', 'non', 'porthogonal', 'states', 'a', 'finer', 'measure', 'of', 'non', 'porthogonality', 'is', 'provided', 'by', 'arakis', 'angles', 'between', 'pinternal', 'spaces', 'the', 'porthogonality', 'concept', 'is', 'a', 'geometric', 'measure', 'of', 'indistinguishability', 'that', 'is', 'independent', 'of', 'the', 'representation', 'chosen', 'for', 'the', 'quantum', 'states', 'it', 'induces', 'a', 'new', 'hierarchy', 'of', 'approximations', 'for', 'group', 'function', 'methods', 'the', 'simplifications', 'that', 'occur', 'in', 'the', 'calculation', 'of', 'matrix', 'elements', 'between', 'porthogonal', 'group', 'functions', 'are', 'presented']] | [-0.14244489708780936, 0.16929252032363384, -0.12209221043806408, 0.09170828029254124, -0.016271498303898832, -0.13722406702653803, 0.045705192143904026, 0.33423312284897283, -0.2828570879448551, -0.2416138980614463, 0.017852846098752914, -0.2653013442825411, -0.14288725610102346, 0.14811002584078262, -0.05415749204460263, 0.027295014763385365, 0.03583195297162711, 0.024281802769635142, -0.12350126466781054, -0.18985150150292235, 0.3675212116201514, 0.012671721302280106, 0.26972088346392226, 0.03604506841529468, 0.12719068126080885, 0.03468403901386353, 0.004060321873937224, -0.00395595852631269, -0.08619284093666212, 0.12776914598017008, 0.2476816559114407, 0.12831967756847945, 0.26141166162782725, -0.32572037638309076, -0.14149939521340674, 0.12429803559981459, 0.056150417477276525, 0.056523685696409996, 0.021452368064255444, -0.298875633487958, 0.10329627714686326, -0.14457811449760014, -0.13668186127774648, -0.0624884701911216, 0.059115368155186476, -0.003554092508923147, -0.2857470102800229, 0.05794929103570577, 0.08032218933815963, 0.05384610620202478, 0.006708102762223864, -0.09228282095384352, -0.027305470621117305, 0.11754373834977291, -0.0036135977566165408, 0.017899045917522356, 0.06088705327285012, -0.06367098875151775, -0.10144904104167039, 0.36887601961756183, -0.02624996221557106, -0.26159624421258565, 0.18441438407531566, -0.12072984097986338, -0.10989332412244733, 0.1211809423348876, 0.09880463538701002, 0.092993764677229, -0.09109750846112818, 0.12722758189763048, -0.10396278548755289, 0.13973645844794425, 0.06885478311199118, 0.0868448896871246, 0.13568064844062955, 0.08814854427845668, 0.123955458815488, 0.13667856585522442, 0.00272806204817037, -0.13026588390156454, -0.3513167213034077, -0.1778762100994126, -0.20392460052626682, 0.028666680141054477, -0.07113085445673709, -0.18019854487640033, 0.37818462412669945, 0.07903537698589343, 0.17908595252263637, 0.054503415912850614, 0.2115696640133128, 0.1443646348119934, 0.06224453616551287, 0.0312792484878956, 0.18931041824506575, 0.23520398082106, -0.027109661629212273, -0.1924788352994959, 0.05179070102137312, 0.1483407267993412] |
709.3952 | Gravitino Dark Matter with Stop as the NLSP | Gravitino is one feasible candidate for the dark matter in supergravity
models. With its couplings being suppressed by the Plank mass, gravitino
interacts very weakly with other particles, making its direct detection, or
production at colliders practically impossible. The signatures of this scenario
mainly arise from the next lightest supersymmetric particle (NLSP) which is
metastable due to the very weak coupling. There are many possibilities for the
NLSP, and here I will review the feasibility of stop particle as the NLSP and
discuss its phenomenology.
| hep-ph | gravitino is one feasible candidate for the dark matter in supergravity models with its couplings being suppressed by the plank mass gravitino interacts very weakly with other particles making its direct detection or production at colliders practically impossible the signatures of this scenario mainly arise from the next lightest supersymmetric particle nlsp which is metastable due to the very weak coupling there are many possibilities for the nlsp and here i will review the feasibility of stop particle as the nlsp and discuss its phenomenology | [['gravitino', 'is', 'one', 'feasible', 'candidate', 'for', 'the', 'dark', 'matter', 'in', 'supergravity', 'models', 'with', 'its', 'couplings', 'being', 'suppressed', 'by', 'the', 'plank', 'mass', 'gravitino', 'interacts', 'very', 'weakly', 'with', 'other', 'particles', 'making', 'its', 'direct', 'detection', 'or', 'production', 'at', 'colliders', 'practically', 'impossible', 'the', 'signatures', 'of', 'this', 'scenario', 'mainly', 'arise', 'from', 'the', 'next', 'lightest', 'supersymmetric', 'particle', 'nlsp', 'which', 'is', 'metastable', 'due', 'to', 'the', 'very', 'weak', 'coupling', 'there', 'are', 'many', 'possibilities', 'for', 'the', 'nlsp', 'and', 'here', 'i', 'will', 'review', 'the', 'feasibility', 'of', 'stop', 'particle', 'as', 'the', 'nlsp', 'and', 'discuss', 'its', 'phenomenology']] | [-0.11531650114749722, 0.3088111491106889, -0.000574763973846155, 0.16130329908063526, -0.10907919768463163, -0.25699449609417246, -0.012602546115351073, 0.30992270294741237, -0.2789255604202695, -0.3064340793582446, 0.1100525006720358, -0.30454291489851826, 0.011093997744405094, 0.15660095099798022, 0.03655165300211486, 0.03373619053197806, 0.09575716106988051, 0.030431140340207254, 0.007995524104027187, -0.25933593456249904, 0.2827714714440791, 0.0736816098475281, 0.14659288516679012, 0.10581904751084306, 0.03555721780833076, -0.0414461902287953, 0.004705229256411685, -0.10084819074391442, -0.11753699857851162, 0.06309685739414657, 0.21073676542955047, 0.130540237510029, 0.16084477763677782, -0.376903715663973, -0.15648092217880355, 0.22349893633714493, 0.17364437989890574, 0.11598475681042628, -0.1356097979210865, -0.29839082372867887, 0.05707232440986178, -0.21762850177200402, -0.1247118743520011, -0.018644929171868545, 0.016078606784781988, -0.1348730852772646, -0.23357839811155023, 0.10841754597118672, -0.07716739618986407, -0.0996701434665524, 0.014768929734333035, -0.1045426823938375, -0.06947550884831477, -0.03416100305176395, 0.21592892517390497, -0.050593207447844395, 0.20866789103704778, -0.25360230717753224, -0.1281169532579096, 0.4776995364795713, -0.09628347426872043, -0.15801018778344286, 0.25979494442615436, -0.10762685999164687, -0.17798443511128426, 0.1535299692522077, 0.11196866857216639, 0.16324408344979233, -0.13853892527301523, 0.188682053521659, -0.002457603456123787, 0.14500530014115878, 0.052793604842222785, 0.08706137869397507, 0.38044307961621704, 0.26884072813588905, 0.08739756019101204, 0.06511128875769347, -0.0748088905478225, -0.09032114839510005, -0.3749764582909205, -0.1227967500960564, -0.1328879884115475, 0.012469730099580963, -0.041469824958510475, -0.08921201023656655, 0.35905912916230803, 0.16790712516864434, 0.21343789275132996, 0.030764215125921455, 0.3089975717532284, 0.05262674938969533, 0.04330410218989367, -0.029778739360763747, 0.3812173903700622, 0.11474447009591933, 0.12705562615986257, -0.2151351656737354, -0.01249631283366505, 0.004064759288859718] |
709.3953 | Intersecting Psi-classes on tropical M_{0,n} | We apply the tropical intersection theory developed by L. Allermann and J.
Rau to compute intersection products of tropical Psi-classes on the moduli
space of rational tropical curves. We show that in the case of zero-dimensional
(stable) intersections, the resulting numbers agree with the intersection
numbers of Psi-classes on the moduli space of n-marked rational curves computed
in algebraic geometry.
| math.AG math.CO | we apply the tropical intersection theory developed by l allermann and j rau to compute intersection products of tropical psiclasses on the moduli space of rational tropical curves we show that in the case of zerodimensional stable intersections the resulting numbers agree with the intersection numbers of psiclasses on the moduli space of nmarked rational curves computed in algebraic geometry | [['we', 'apply', 'the', 'tropical', 'intersection', 'theory', 'developed', 'by', 'l', 'allermann', 'and', 'j', 'rau', 'to', 'compute', 'intersection', 'products', 'of', 'tropical', 'psiclasses', 'on', 'the', 'moduli', 'space', 'of', 'rational', 'tropical', 'curves', 'we', 'show', 'that', 'in', 'the', 'case', 'of', 'zerodimensional', 'stable', 'intersections', 'the', 'resulting', 'numbers', 'agree', 'with', 'the', 'intersection', 'numbers', 'of', 'psiclasses', 'on', 'the', 'moduli', 'space', 'of', 'nmarked', 'rational', 'curves', 'computed', 'in', 'algebraic', 'geometry']] | [-0.2340694340566794, 0.07824687378791471, -0.1170305802486837, 0.12747937751313052, -0.02363966659953197, -0.061963421603043876, 0.05315603102208115, 0.25254370895175576, -0.3211481001848976, -0.1964851892165219, 0.11173505093514298, -0.2281584538364162, -0.19577878484657654, 0.24525632963826258, -0.18151551705474656, -0.006778971365808199, 0.00332034055609256, 0.013541045055414239, -0.07346583944357311, -0.3580172313377261, 0.4231630489928648, -0.07399321972237279, 0.240871783872232, 0.0104747349396348, 0.08460531505988911, 0.07429962625416617, -0.04600343705775837, 0.05124354125679626, -0.1838809067428277, 0.21352747191364566, 0.34034250310311714, 0.1409565595133851, 0.05604466958902776, -0.43808593911429244, -0.12930470858312523, 0.19915033616125583, 0.07670196448840821, -0.053383533687641226, 0.09314427592714007, -0.15145172271489477, 0.05146873970516026, -0.10964924804866313, -0.24266441320845236, -0.13002969338558615, 0.07822590845171362, 0.0766651099237303, -0.15695284317868452, -0.1060041757998988, -0.01303122464645033, 0.2021955875058969, -0.05604338825990756, -0.1378646027277379, -0.17626772637789448, 0.01429838091135025, -0.04099124912172556, 0.037484666254992284, 0.05531752402894199, -0.0589149644287924, -0.11814550504398842, 0.3513396457768977, -0.05599114370221893, -0.17107242476195098, 0.1024390804503734, -0.18008169811995078, -0.10583582354399065, 0.17003757419685522, 0.1386457303383698, 0.21675572640572985, 0.08784757732258489, 0.21359693162667098, -0.14040850636083632, -0.0034439934456410508, 0.14185076180535058, -0.08940202177036553, 0.14789210776022324, 0.03822906850255094, 0.03882612598439058, 0.13025386405255024, -0.04814563352459421, -0.1526443576440215, -0.3650540479769309, -0.17688817176191757, -0.13189404405032595, 0.10877537099489322, -0.12348407380413846, -0.20033083798674245, 0.3781341389597704, 0.014573598742329826, 0.2248925012225906, 0.12877036517796417, 0.24581057531759143, 0.020192975271493198, -0.029351488081738354, 0.05477194562554359, 0.17318705949001015, 0.21548218364284064, -0.014868607822184762, -0.16104201339185237, -0.038578209149030346, 0.2712568415949742] |
709.3954 | Computational Steering of Cluster Formation in Brownian Suspensions | We simulate cluster formation of model colloidal particles interacting via
DLVO (Derjaguin, Landau, Vervey, Overbeek) potentials. The interaction
potentials can be related to experimental conditions, defined by the pH-value,
the salt concentration and the volume fraction of solid particles suspended in
water. The system shows different structural properties for different
conditions, including cluster formation, a glass-like repulsive structure, or a
liquid suspension. Since many simulations are needed to explore the whole
parameter space, when investigating the properties of the suspension depending
on the experimental conditions, we have developed a steering approach to
control a running simulation and to detect interesting transitions from one
region in the configuration space to another. The advantages of the steering
approach and the restrictions of its applicability due to physical constraints
are illustrated by several example cases.
| cond-mat.soft | we simulate cluster formation of model colloidal particles interacting via dlvo derjaguin landau vervey overbeek potentials the interaction potentials can be related to experimental conditions defined by the phvalue the salt concentration and the volume fraction of solid particles suspended in water the system shows different structural properties for different conditions including cluster formation a glasslike repulsive structure or a liquid suspension since many simulations are needed to explore the whole parameter space when investigating the properties of the suspension depending on the experimental conditions we have developed a steering approach to control a running simulation and to detect interesting transitions from one region in the configuration space to another the advantages of the steering approach and the restrictions of its applicability due to physical constraints are illustrated by several example cases | [['we', 'simulate', 'cluster', 'formation', 'of', 'model', 'colloidal', 'particles', 'interacting', 'via', 'dlvo', 'derjaguin', 'landau', 'vervey', 'overbeek', 'potentials', 'the', 'interaction', 'potentials', 'can', 'be', 'related', 'to', 'experimental', 'conditions', 'defined', 'by', 'the', 'phvalue', 'the', 'salt', 'concentration', 'and', 'the', 'volume', 'fraction', 'of', 'solid', 'particles', 'suspended', 'in', 'water', 'the', 'system', 'shows', 'different', 'structural', 'properties', 'for', 'different', 'conditions', 'including', 'cluster', 'formation', 'a', 'glasslike', 'repulsive', 'structure', 'or', 'a', 'liquid', 'suspension', 'since', 'many', 'simulations', 'are', 'needed', 'to', 'explore', 'the', 'whole', 'parameter', 'space', 'when', 'investigating', 'the', 'properties', 'of', 'the', 'suspension', 'depending', 'on', 'the', 'experimental', 'conditions', 'we', 'have', 'developed', 'a', 'steering', 'approach', 'to', 'control', 'a', 'running', 'simulation', 'and', 'to', 'detect', 'interesting', 'transitions', 'from', 'one', 'region', 'in', 'the', 'configuration', 'space', 'to', 'another', 'the', 'advantages', 'of', 'the', 'steering', 'approach', 'and', 'the', 'restrictions', 'of', 'its', 'applicability', 'due', 'to', 'physical', 'constraints', 'are', 'illustrated', 'by', 'several', 'example', 'cases']] | [-0.10984940276119524, 0.15709079986878935, -0.09679815515285742, 0.03996967611023943, -0.0326011884061776, -0.12657961381940555, 0.035554804773432494, 0.34834632352847633, -0.2630211730622722, -0.3275507674303674, 0.08367726989694736, -0.2381581885505553, -0.13696661328484538, 0.1764017616128478, 0.0011683261172600688, 0.05346779900608328, 0.03228093722820965, -0.01869461754912809, -0.058150952404635095, -0.22219450033859897, 0.28127102721269237, 0.04001699522749044, 0.2581764319431719, 0.09496623810153199, 0.0846074363927691, -0.016646104166284204, 0.05150411900786953, 0.05584858271048903, -0.1813270133983998, 0.06267778965722741, 0.18789205110128898, 0.03816785245693026, 0.23985366208855602, -0.4365854884945709, -0.25555144751600867, 0.08609205715443569, 0.10874203663276694, 0.10620683366930439, -0.0642454958341319, -0.3184414262748288, 0.019844532389734083, -0.1536399376301365, -0.16791713962914379, -0.08493889985563419, 0.002629571674277878, 0.06673526684802474, -0.2545475344949416, 0.06873838608828552, 0.003188748092155989, 0.025741746809106063, -0.123752023595499, -0.07818998310640313, -0.034965894462270594, 0.12862543012961952, 0.03688853531844829, -0.03746761095297758, 0.23047494176661468, -0.147716328657218, -0.06941435359176674, 0.42768382835592933, -0.011307521639676153, -0.20469939494007872, 0.27836852599262396, -0.137149702480333, -0.10953637596063373, 0.1507182768990378, 0.16258894519894632, 0.08193152257461699, -0.1568551595032416, 0.06044227986655177, -0.012985074362994833, 0.1676124461561278, 0.06348912794327805, 0.007873580934131475, 0.20790266775248842, 0.19679297729153614, 0.024229155409501737, 0.1868655054695826, -0.07344331222280633, -0.1486285692862882, -0.24917584134422185, -0.15316369409409872, -0.16847973301445085, -0.016772488811060447, -0.08473951722646776, -0.1427317255546289, 0.3761836507549609, 0.1315658327266716, 0.1848247514269848, -0.004712627559032945, 0.26091191364462907, 0.04330649805870192, 0.04422740921385245, -0.014049261883932044, 0.2460777992773659, 0.14711330822164206, 0.09446413103643919, -0.25732828416321285, 0.06154200687243795, 0.038610445431483384] |
709.3955 | Statistics of Extreme Values in Time Series with Intermediate-Term
Correlations | It will be discussed the statistics of the extreme values in time series
characterized by finite-term correlations with non-exponential decay.
Precisely, it will be considered the results of numerical analyses concerning
the return intervals of extreme values of the fluctuations of resistance and
defect-fraction displayed by a resistor with granular structure in a
nonequilibrium stationary state. The resistance and defect-fraction are
calculated as a function of time by Monte Carlo simulations using a resistor
network approach. It will be shown that when the auto-correlation function of
the fluctuations displays a non-exponential and non-power-law decay, the
distribution of the return intervals of extreme values is a stretched
exponential, with exponent largely independent of the threshold. Recently, a
stretched exponential distribution of the return intervals of extreme values
has been identified in long-term correlated time series by Bunde et al. (2003)
and Altmann and Kantz (2005). Thus, the present results show that the stretched
exponential distribution of the return intervals is not an exclusive feature of
long-term correlated time series.
| cond-mat.stat-mech cond-mat.other q-fin.ST | it will be discussed the statistics of the extreme values in time series characterized by finiteterm correlations with nonexponential decay precisely it will be considered the results of numerical analyses concerning the return intervals of extreme values of the fluctuations of resistance and defectfraction displayed by a resistor with granular structure in a nonequilibrium stationary state the resistance and defectfraction are calculated as a function of time by monte carlo simulations using a resistor network approach it will be shown that when the autocorrelation function of the fluctuations displays a nonexponential and nonpowerlaw decay the distribution of the return intervals of extreme values is a stretched exponential with exponent largely independent of the threshold recently a stretched exponential distribution of the return intervals of extreme values has been identified in longterm correlated time series by bunde et al 2003 and altmann and kantz 2005 thus the present results show that the stretched exponential distribution of the return intervals is not an exclusive feature of longterm correlated time series | [['it', 'will', 'be', 'discussed', 'the', 'statistics', 'of', 'the', 'extreme', 'values', 'in', 'time', 'series', 'characterized', 'by', 'finiteterm', 'correlations', 'with', 'nonexponential', 'decay', 'precisely', 'it', 'will', 'be', 'considered', 'the', 'results', 'of', 'numerical', 'analyses', 'concerning', 'the', 'return', 'intervals', 'of', 'extreme', 'values', 'of', 'the', 'fluctuations', 'of', 'resistance', 'and', 'defectfraction', 'displayed', 'by', 'a', 'resistor', 'with', 'granular', 'structure', 'in', 'a', 'nonequilibrium', 'stationary', 'state', 'the', 'resistance', 'and', 'defectfraction', 'are', 'calculated', 'as', 'a', 'function', 'of', 'time', 'by', 'monte', 'carlo', 'simulations', 'using', 'a', 'resistor', 'network', 'approach', 'it', 'will', 'be', 'shown', 'that', 'when', 'the', 'autocorrelation', 'function', 'of', 'the', 'fluctuations', 'displays', 'a', 'nonexponential', 'and', 'nonpowerlaw', 'decay', 'the', 'distribution', 'of', 'the', 'return', 'intervals', 'of', 'extreme', 'values', 'is', 'a', 'stretched', 'exponential', 'with', 'exponent', 'largely', 'independent', 'of', 'the', 'threshold', 'recently', 'a', 'stretched', 'exponential', 'distribution', 'of', 'the', 'return', 'intervals', 'of', 'extreme', 'values', 'has', 'been', 'identified', 'in', 'longterm', 'correlated', 'time', 'series', 'by', 'bunde', 'et', 'al', '2003', 'and', 'altmann', 'and', 'kantz', '2005', 'thus', 'the', 'present', 'results', 'show', 'that', 'the', 'stretched', 'exponential', 'distribution', 'of', 'the', 'return', 'intervals', 'is', 'not', 'an', 'exclusive', 'feature', 'of', 'longterm', 'correlated', 'time', 'series']] | [-0.10853410762748822, 0.17302120830096432, -0.16468148898671975, 0.07575929869446113, 0.03386117799708507, -0.11004096856340766, 0.04668792429182565, 0.361704062309229, -0.24822209438478404, -0.2724196653135798, 0.11612184986712015, -0.2767041376312122, -0.11660336138624133, 0.21216023769794087, -0.009570195915346797, 0.1061288682408772, 0.05317849219974243, 0.0060360631707942845, -0.048044693068544746, -0.26556286686382286, 0.24266221636454716, 0.11984010808395618, 0.28871686486809545, 0.004578880183963161, 0.06216317191155571, -0.005293118157847361, -0.0518783110384406, 0.0553480942140926, -0.14388643073695923, 0.04512138405363217, 0.19900603058860836, 0.07556480877079373, 0.2741951156083043, -0.3930938862941482, -0.20429818912578576, 0.09410374878595272, 0.12400117060310686, 0.028519057503647426, 0.0017934869636188854, -0.27044252519016015, 0.04245607401385452, -0.16526138836546153, -0.1388785428706218, -0.060579375171977465, 0.1032578227688756, 0.09020667518912391, -0.30763532942845345, 0.13796848493882202, 0.059815882139303014, 0.045140279160643164, -0.03167991916733709, -0.09234514200326169, -0.007957865749344682, 0.11030505372398307, 0.09895988373212855, 0.011134837282765092, 0.1201114647090435, -0.09916954586338816, -0.13073561608114026, 0.2771983446045355, -0.07485474805545175, -0.14045667551232108, 0.12169781464688254, -0.20230674310164018, -0.09932932499513933, 0.16803711468748975, 0.1254682638710647, 0.09960587421206363, -0.14949192708635095, 0.07288355995216549, -0.03806386568555326, 0.15168833965576733, 0.05204676804273869, 0.02079354165629907, 0.20041364461860872, 0.14771466252506907, 0.004684983255962531, 0.1505639345279302, -0.09308424078238507, -0.13225225832800128, -0.2915097437460314, -0.1275259786595901, -0.21721126346877126, 0.08469513822002972, -0.0977287497790354, -0.19871034161099516, 0.4191809699165099, 0.09563999459373229, 0.24748543577452162, 0.08290987157714412, 0.2205017143662906, 0.1857455754363345, 0.019018325954675674, 0.08063172886935663, 0.21219505098733035, 0.10084858895208912, 0.10955990249516838, -0.2018037758160834, 0.16392858467050686, 0.01014656241785622] |
709.3956 | Quantum to Classical Transition of the Charge Relaxation Resistance of a
Mesoscopic Capacitor | We present an analysis of the effect of dephasing on the single channel
charge relaxation resistance of a mesoscopic capacitor in the linear low
frequency regime. The capacitor consists of a cavity which is via a quantum
point contact connected to an electron reservoir and Coulomb coupled to a gate.
The capacitor is in a perpendicular high magnetic field such that only one
(spin polarized) edge state is (partially) transmitted through the contact. In
the coherent limit the charge relaxation resistance for a single channel
contact is independent of the transmission probability of the contact and given
by half a resistance quantum. The loss of coherence in the conductor is modeled
by attaching to it a fictitious probe, which draws no net current. In the
incoherent limit one could expect a charge relaxation resistance that is
inversely proportional to the transmission probability of the quantum point
contact. However, such a two terminal result requires that scattering is
between two electron reservoirs which provide full inelastic relaxation. We
find that dephasing of a single edge state in the cavity is not sufficient to
generate an interface resistance. As a consequence the charge relaxation
resistance is given by the sum of one constant interface resistance and the
(original) Landauer resistance. The same result is obtained in the high
temperature regime due to energy averaging over many occupied states in the
cavity. Only for a large number of open dephasing channels, describing
spatially homogenous dephasing in the cavity, do we recover the two terminal
resistance, which is inversely proportional to the transmission probability of
the QPC. We compare different dephasing models and discuss the relation of our
results to a recent experiment.
| cond-mat.mes-hall | we present an analysis of the effect of dephasing on the single channel charge relaxation resistance of a mesoscopic capacitor in the linear low frequency regime the capacitor consists of a cavity which is via a quantum point contact connected to an electron reservoir and coulomb coupled to a gate the capacitor is in a perpendicular high magnetic field such that only one spin polarized edge state is partially transmitted through the contact in the coherent limit the charge relaxation resistance for a single channel contact is independent of the transmission probability of the contact and given by half a resistance quantum the loss of coherence in the conductor is modeled by attaching to it a fictitious probe which draws no net current in the incoherent limit one could expect a charge relaxation resistance that is inversely proportional to the transmission probability of the quantum point contact however such a two terminal result requires that scattering is between two electron reservoirs which provide full inelastic relaxation we find that dephasing of a single edge state in the cavity is not sufficient to generate an interface resistance as a consequence the charge relaxation resistance is given by the sum of one constant interface resistance and the original landauer resistance the same result is obtained in the high temperature regime due to energy averaging over many occupied states in the cavity only for a large number of open dephasing channels describing spatially homogenous dephasing in the cavity do we recover the two terminal resistance which is inversely proportional to the transmission probability of the qpc we compare different dephasing models and discuss the relation of our results to a recent experiment | [['we', 'present', 'an', 'analysis', 'of', 'the', 'effect', 'of', 'dephasing', 'on', 'the', 'single', 'channel', 'charge', 'relaxation', 'resistance', 'of', 'a', 'mesoscopic', 'capacitor', 'in', 'the', 'linear', 'low', 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709.3957 | A note on the cyclic evolution of the pulsar magnetosphere | Positive and negative pulsar breaking indices suggest that some fraction of
the pulsar spindown torque undergoes a cyclic evolution. The observed strong
correlation of `anomalous' breaking indices with pulsar age implies that the
characteristic periodicity timescale is in the range 100 to 10,000 years
depending on the fraction of the spindown torque that undergoes cyclic
evolution, 1 to 100% respectively. We argue that the longest variability
timescale is consistent with a neutron star magnetic cycle similar to the solar
cycle.
| astro-ph | positive and negative pulsar breaking indices suggest that some fraction of the pulsar spindown torque undergoes a cyclic evolution the observed strong correlation of anomalous breaking indices with pulsar age implies that the characteristic periodicity timescale is in the range 100 to 10000 years depending on the fraction of the spindown torque that undergoes cyclic evolution 1 to 100 respectively we argue that the longest variability timescale is consistent with a neutron star magnetic cycle similar to the solar cycle | [['positive', 'and', 'negative', 'pulsar', 'breaking', 'indices', 'suggest', 'that', 'some', 'fraction', 'of', 'the', 'pulsar', 'spindown', 'torque', 'undergoes', 'a', 'cyclic', 'evolution', 'the', 'observed', 'strong', 'correlation', 'of', 'anomalous', 'breaking', 'indices', 'with', 'pulsar', 'age', 'implies', 'that', 'the', 'characteristic', 'periodicity', 'timescale', 'is', 'in', 'the', 'range', '100', 'to', '10000', 'years', 'depending', 'on', 'the', 'fraction', 'of', 'the', 'spindown', 'torque', 'that', 'undergoes', 'cyclic', 'evolution', '1', 'to', '100', 'respectively', 'we', 'argue', 'that', 'the', 'longest', 'variability', 'timescale', 'is', 'consistent', 'with', 'a', 'neutron', 'star', 'magnetic', 'cycle', 'similar', 'to', 'the', 'solar', 'cycle']] | [-0.21827609499450773, 0.2648342808941379, -0.022625727718695997, 0.0830955528334016, -0.1260591116733849, -0.06468288792530075, 0.047915708005893974, 0.38786237332969903, -0.2630598761839792, -0.3532606787979603, 0.07087756616383559, -0.26541371521307155, -0.05612745909602381, 0.24034429446182912, -0.012787704984657467, -0.08595453628804535, 0.08629705880302936, 0.03371478905901313, -0.0799845188157633, -0.1864211066329517, 0.23744099638424815, 0.03450770599883981, 0.1755581562872976, 0.019748232630081474, 0.08519159113056958, -0.08627005745456699, 0.040089479146990924, -0.03457979578524828, -0.12375311582363793, -0.01563774674432352, 0.13291415643179788, 0.0809806632634718, 0.17242484567686917, -0.40083004953339696, -0.20380603172743578, 0.09917817203095183, 0.12343426071456634, 0.006804229598492384, -0.044388971240550745, -0.15778579139732757, 0.09868742521721288, -0.24258928344934247, -0.14092330306302756, 0.06604190543148433, 0.17960328464396297, 0.030090347590157763, -0.22932605012319981, 0.16195735938090366, 0.07898370093898847, 0.10564318699762225, -0.14024188953917474, -0.08443147712387145, -0.039871301589300856, 0.06696972483186983, 0.15403851342271083, 0.09503401262190891, 0.14752723395940848, -0.06619434392778203, -0.12613400593327243, 0.34794952960219233, -0.1394709105254151, 0.00883741932339035, 0.1584667266579345, -0.29036663330625745, -0.17275927641894667, 0.1995855300599942, 0.09899169018026441, 0.05729960412718356, -0.07988558231154456, -0.041822367144777675, -0.00633655768178869, 0.2838478232501075, 0.04561335775651969, 0.031207391456700862, 0.3139397897059098, 0.15813308507422336, 0.04078454682603479, 0.10386261366074905, -0.20280395251174924, -0.07599609007593244, -0.20610471569816582, -0.06905656547751278, -0.13242327750776894, 0.1675117679464165, -0.16620927414023753, -0.13938051379518585, 0.41719272136106156, 0.13990747628267855, 0.17204369425307958, 0.06549287943344098, 0.21530237979022787, 0.14668507490714547, 0.0851391513395356, 0.11263223347486928, 0.29652504047444384, 0.17475210155826063, 0.11835790139448363, -0.33393086892319845, 0.12082769937696866, 0.00486219884478487] |
709.3958 | The plane symmetric Einstein-dust system with positive cosmological
constant | The Einstein equations with a positive cosmological constant are coupled to
the pressureless perfect fluid matter in plane symmetry. Under suitable
restrictions on the initial data, the resulting Einstein-dust system is proved
to have a global classical solution in the future time direction. Some late
time asymptotic properties are obtained as well.
| gr-qc | the einstein equations with a positive cosmological constant are coupled to the pressureless perfect fluid matter in plane symmetry under suitable restrictions on the initial data the resulting einsteindust system is proved to have a global classical solution in the future time direction some late time asymptotic properties are obtained as well | [['the', 'einstein', 'equations', 'with', 'a', 'positive', 'cosmological', 'constant', 'are', 'coupled', 'to', 'the', 'pressureless', 'perfect', 'fluid', 'matter', 'in', 'plane', 'symmetry', 'under', 'suitable', 'restrictions', 'on', 'the', 'initial', 'data', 'the', 'resulting', 'einsteindust', 'system', 'is', 'proved', 'to', 'have', 'a', 'global', 'classical', 'solution', 'in', 'the', 'future', 'time', 'direction', 'some', 'late', 'time', 'asymptotic', 'properties', 'are', 'obtained', 'as', 'well']] | [-0.2060964631024175, 0.09239338954480794, -0.12352262784798558, 0.04649841911920633, -0.11666703252838208, -0.14394902964480794, -0.08465301389626873, 0.3190873893013654, -0.26156122982501984, -0.28807588098033404, 0.1588849616930999, -0.2558968079706224, -0.03996307874331251, 0.15798383471197808, -0.0024143591738091065, 0.12311635983104889, 0.04746315131286302, 0.07487690063247171, -0.07693010860552582, -0.29434538514424974, 0.30565003156348564, 0.05543125069771822, 0.2612331060047906, -0.030677491186697107, 0.11499709102477376, -0.05223979079612316, -0.004368586286615867, 0.05657561073222986, -0.1727610078563045, -0.041621342014807924, 0.21449756076057944, 0.09247361891902983, 0.22194255250864303, -0.46333463321654844, -0.23425191056986266, 0.11855472122820523, 0.09663816178754832, 0.15928769842363322, -0.07281498574481632, -0.30685933041744506, 0.07857158603124284, -0.09283121781817709, -0.20231840999510425, -0.029568437280921407, 0.012528930831019981, 0.05448668832720544, -0.2353194744254534, 0.11505312827200843, 0.01996080441481004, -0.013970723751789102, -0.14457424228581098, -0.08801231560825656, -0.03964132110391242, 0.06277535871861172, 0.10218015922985685, 0.022467692259502094, 0.09167651907549813, -0.1295505591775649, -0.021554671639863115, 0.42219986329571557, -0.1447891672701539, -0.25427960088619816, 0.16732964464105093, -0.13815535938080686, -0.09753064829139756, 0.09890835674013942, 0.12140259730557983, 0.12227655995565538, -0.14839578774542764, 0.16484594595833466, -0.05684595393876617, 0.12471604236410573, 0.09536075617115085, 0.0268425763799594, 0.2348800719393274, 0.11271617214571542, 0.09168462221098778, 0.09134476223530677, 0.01747516451667672, -0.13669629521273935, -0.3317354805051134, -0.14873562167541912, -0.1546225492918613, 0.07959162537008524, -0.15838619232034454, -0.155077512949132, 0.3279779597113912, 0.07249410357214331, 0.1571574687080171, 0.06073810960739278, 0.2687667918104965, 0.10998627383826086, -0.016703876232405983, 0.09572549492944606, 0.27958693662759077, 0.13728449246040186, 0.16626478234628358, -0.2188390590913164, 0.03592287519803414, 0.07012947297726686] |
709.3959 | Central mass accumulation in nuclear spirals | In central regions of non-axisymmetric galaxies high-resolution
hydrodynamical simulations indicate spiral shocks, which are capable of
transporting gas inwards. The efficiency of transport is lower at smaller
radii, therefore instead of all gas dropping onto the galactic centre, a
roughly uniform distribution of high-density gas develops in the gaseous
nuclear spiral downstream from the shock, and the shear in gas is very low
there. These are excellent conditions for star formation. This mechanism is
likely to contribute to the process of (pseudo-) bulge formation.
| astro-ph | in central regions of nonaxisymmetric galaxies highresolution hydrodynamical simulations indicate spiral shocks which are capable of transporting gas inwards the efficiency of transport is lower at smaller radii therefore instead of all gas dropping onto the galactic centre a roughly uniform distribution of highdensity gas develops in the gaseous nuclear spiral downstream from the shock and the shear in gas is very low there these are excellent conditions for star formation this mechanism is likely to contribute to the process of pseudo bulge formation | [['in', 'central', 'regions', 'of', 'nonaxisymmetric', 'galaxies', 'highresolution', 'hydrodynamical', 'simulations', 'indicate', 'spiral', 'shocks', 'which', 'are', 'capable', 'of', 'transporting', 'gas', 'inwards', 'the', 'efficiency', 'of', 'transport', 'is', 'lower', 'at', 'smaller', 'radii', 'therefore', 'instead', 'of', 'all', 'gas', 'dropping', 'onto', 'the', 'galactic', 'centre', 'a', 'roughly', 'uniform', 'distribution', 'of', 'highdensity', 'gas', 'develops', 'in', 'the', 'gaseous', 'nuclear', 'spiral', 'downstream', 'from', 'the', 'shock', 'and', 'the', 'shear', 'in', 'gas', 'is', 'very', 'low', 'there', 'these', 'are', 'excellent', 'conditions', 'for', 'star', 'formation', 'this', 'mechanism', 'is', 'likely', 'to', 'contribute', 'to', 'the', 'process', 'of', 'pseudo', 'bulge', 'formation']] | [-0.1072016382795049, 0.13593177915373372, -0.07532428210834041, 0.09112943482244061, -0.042529317045894764, -0.015696764496775966, -0.022942607834314305, 0.3767397085515161, -0.23289556677142778, -0.28803353811270516, 0.033992564772710294, -0.267225438884149, 0.025491519753510754, 0.18867513666018135, 0.018847893047634335, -0.03001431737183815, 0.015206469706581197, -0.10085739819554701, -0.04832422114642603, -0.21858150353433475, 0.31143296686821575, 0.1374754541819649, 0.20061630349872367, -0.01625718253975113, 0.04770594997154105, -0.14414986695295998, -0.03012819370875756, -0.04962581758792069, -0.16972589862000728, 0.039879049128753, 0.22685436638338224, 0.0693598061666957, 0.2600800302766618, -0.47607266643483725, -0.2387145608982315, 0.029313516814172977, 0.23416855113048637, 0.08549318805619675, -0.13538128421420142, -0.18893287874137363, 0.12081191588852865, -0.19712781674128824, -0.19782623375344666, 0.04345287971331605, 0.03470362499467142, 0.060854431275012236, -0.24827696878596076, 0.2109412544495648, 0.06993058125399762, 0.035619386815510336, -0.09973221649748407, -0.06080600233482463, -0.09821261673988331, 0.07325158033858142, 0.008995399682524814, 0.09667896984527553, 0.30289043023228823, -0.18809514133248567, 0.06263824818389756, 0.40622804933671086, -0.02354170144618755, -0.06180757038029177, 0.28929769546015277, -0.27088186694752603, -0.12209062735616628, 0.23039459535807727, 0.18121348497723894, 0.07944907287933997, -0.10230728670943617, -0.04788801869844541, -0.06408057656205658, 0.11248164095394757, 0.07390388274299246, 0.012335024208628706, 0.3959646130512868, 0.16306321225350812, 0.08668382512405515, 0.1267558060298186, -0.17308037330041684, -0.11833232925606094, -0.22654702781333722, -0.10377572237380914, -0.11329311567741181, 0.023318484627885654, -0.12115651273727833, -0.10375858990231618, 0.2840386404145864, 0.09055234725210107, 0.23089872255028845, -0.020566574138813718, 0.34723393131224883, 0.05508503335572425, 0.118727400233703, 0.1778091159372014, 0.2905684576946355, 0.19343865961058154, 0.06969964575754213, -0.26674664216504124, 0.09425802937974888, -0.0010973056833747598] |
709.396 | The Circumnuclear Molecular Gas in the Seyfert Galaxy NGC4945 | We have mapped the central region of NGC 4945 in the $J=2\to1$ transition of
$^{12}$CO, $^{13}$CO, and C$^{18}$O, as well as the continuum at 1.3 mm, at an
angular resolution of $5\farc \times 3\farc$ with the Submillimeter Array. The
relative proximity of NGC 4945 (distance of only 3.8 Mpc) permits a detailed
study of the circumnuclear molecular gas and dust in a galaxy exhibiting both
an AGN (classified as a Seyfert 2) and a circumnuclear starburst in an inclined
ring with radius $\sim$2\farcs5 ($\sim$50 pc). We find that all three molecular
lines trace an inclined rotating disk with major axis aligned with that of the
starburst ring and large-scale galactic disk, and which exhibits solid-body
rotation within a radius of $\sim$5\farc ($\sim$95 pc). We infer an inclination
for the nuclear disk of $62^{\circ} \pm 2^{\circ}$, somewhat smaller than the
inclination of the large-scale galactic disk of $\sim$$78^{\circ}$. The
continuum emission at 1.3 mm also extends beyond the starburst ring, and is
dominated by thermal emission from dust. If it traces the same dust emitting in
the far-infrared, then the bulk of this dust must be heated by star-formation
activity rather than the AGN. We discover a kinematically-decoupled component
at the center of the disk with a radius smaller than $1\farcs4$ (27 pc), but
which spans approximately the same range of velocities as the surrounding disk.
This component has a higher density than its surroundings, and is a promising
candidate for the circumnuclear molecular torus invoked by AGN unification
models.
| astro-ph | we have mapped the central region of ngc 4945 in the j2to1 transition of 12co 13co and c18o as well as the continuum at 13 mm at an angular resolution of 5farc times 3farc with the submillimeter array the relative proximity of ngc 4945 distance of only 38 mpc permits a detailed study of the circumnuclear molecular gas and dust in a galaxy exhibiting both an agn classified as a seyfert 2 and a circumnuclear starburst in an inclined ring with radius sim2farcs5 sim50 pc we find that all three molecular lines trace an inclined rotating disk with major axis aligned with that of the starburst ring and largescale galactic disk and which exhibits solidbody rotation within a radius of sim5farc sim95 pc we infer an inclination for the nuclear disk of 62circ pm 2circ somewhat smaller than the inclination of the largescale galactic disk of sim78circ the continuum emission at 13 mm also extends beyond the starburst ring and is dominated by thermal emission from dust if it traces the same dust emitting in the farinfrared then the bulk of this dust must be heated by starformation activity rather than the agn we discover a kinematicallydecoupled component at the center of the disk with a radius smaller than 1farcs4 27 pc but which spans approximately the same range of velocities as the surrounding disk this component has a higher density than its surroundings and is a promising candidate for the circumnuclear molecular torus invoked by agn unification models | [['we', 'have', 'mapped', 'the', 'central', 'region', 'of', 'ngc', '4945', 'in', 'the', 'j2to1', 'transition', 'of', '12co', '13co', 'and', 'c18o', 'as', 'well', 'as', 'the', 'continuum', 'at', '13', 'mm', 'at', 'an', 'angular', 'resolution', 'of', '5farc', 'times', '3farc', 'with', 'the', 'submillimeter', 'array', 'the', 'relative', 'proximity', 'of', 'ngc', '4945', 'distance', 'of', 'only', '38', 'mpc', 'permits', 'a', 'detailed', 'study', 'of', 'the', 'circumnuclear', 'molecular', 'gas', 'and', 'dust', 'in', 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709.3961 | Scalable N-body code for the modelling of early-type galaxies | Early-type galaxies exhibit a wealth of photometric and dynamical structures.
These signatures are fossil records of their formation and evolution processes.
In order to examine these structures in detail, we build models aimed at
reproducing the observed photometry and kinematics. The developed method is a
generalization of the one introduced by Syer and Tremaine (1996), consisting in
an N-body representation, in which the weights of the particles are changing
with time. Our code is adapted for integral-field spectroscopic data, and is
able to reproduce the photometric as well as stellar kinematic data of observed
galaxies. We apply this technique on SAURON data of early-type galaxies, and
present preliminary results on NGC 3377.
| astro-ph | earlytype galaxies exhibit a wealth of photometric and dynamical structures these signatures are fossil records of their formation and evolution processes in order to examine these structures in detail we build models aimed at reproducing the observed photometry and kinematics the developed method is a generalization of the one introduced by syer and tremaine 1996 consisting in an nbody representation in which the weights of the particles are changing with time our code is adapted for integralfield spectroscopic data and is able to reproduce the photometric as well as stellar kinematic data of observed galaxies we apply this technique on sauron data of earlytype galaxies and present preliminary results on ngc 3377 | [['earlytype', 'galaxies', 'exhibit', 'a', 'wealth', 'of', 'photometric', 'and', 'dynamical', 'structures', 'these', 'signatures', 'are', 'fossil', 'records', 'of', 'their', 'formation', 'and', 'evolution', 'processes', 'in', 'order', 'to', 'examine', 'these', 'structures', 'in', 'detail', 'we', 'build', 'models', 'aimed', 'at', 'reproducing', 'the', 'observed', 'photometry', 'and', 'kinematics', 'the', 'developed', 'method', 'is', 'a', 'generalization', 'of', 'the', 'one', 'introduced', 'by', 'syer', 'and', 'tremaine', '1996', 'consisting', 'in', 'an', 'nbody', 'representation', 'in', 'which', 'the', 'weights', 'of', 'the', 'particles', 'are', 'changing', 'with', 'time', 'our', 'code', 'is', 'adapted', 'for', 'integralfield', 'spectroscopic', 'data', 'and', 'is', 'able', 'to', 'reproduce', 'the', 'photometric', 'as', 'well', 'as', 'stellar', 'kinematic', 'data', 'of', 'observed', 'galaxies', 'we', 'apply', 'this', 'technique', 'on', 'sauron', 'data', 'of', 'earlytype', 'galaxies', 'and', 'present', 'preliminary', 'results', 'on', 'ngc', '3377']] | [-0.01829739283337923, 0.03976066241024715, -0.12501180492524458, 0.10552363036341765, -0.09100427152588964, -0.02938861747991593, -0.008207061754157101, 0.4307796344759741, -0.1603611995648992, -0.35844282510307884, 0.07207320875438329, -0.2796237293847038, -0.10500103298837919, 0.2190700781731201, -0.045006195116522055, 0.03522993206778275, 0.0944185990821487, -0.09977645661690206, -0.010827707222363512, -0.3164779761406992, 0.32697870127075085, 0.07606622946747978, 0.16627988293268053, -0.08985414562630467, 0.09172880836117006, -0.05884948597356145, -0.13678070638811082, -0.03615258544284318, -0.1914085685275495, 0.0663137665209693, 0.2551655037193541, 0.1439216930385945, 0.20890370274095663, -0.36467585197117713, -0.18601289933264656, 0.035363639303925866, 0.17844136207297975, 0.08112577635724197, -0.08820808623879982, -0.29669645762935815, 0.07151246756049139, -0.14673361306111993, -0.1640870049970025, -0.05493113895811673, -0.0008350955488692437, 0.05111827438148404, -0.2392582120872768, 0.1246734400213297, 0.008919290703228657, 0.14766664730749263, -0.13942920745466836, -0.06596795805463833, -0.058966887121122066, 0.11916998994170822, -0.02144755241585829, 0.03366566875151226, 0.12336116497083692, -0.11076789601897222, -0.08376786792567666, 0.42043387347699274, -0.05000159949330347, -0.056530781040367274, 0.25467482052876483, -0.17169807067797851, -0.1931211628876294, 0.03027653360706089, 0.2083114418907956, 0.09697757943234007, -0.17874003923913864, 0.0367032072359247, -0.042949240176572596, 0.16639831108373723, 0.00046520189789589494, 0.04149212906070586, 0.2328811800024206, 0.131084918842784, -0.016808678013538674, 0.09635730116237287, -0.19680906973163864, -0.04925056083759825, -0.22155496451471532, -0.09993567688590181, -0.13369546424032056, 0.038717002559029164, -0.09609673955050571, -0.11707862759275096, 0.4007578502600414, 0.12659871740795228, 0.2561993504267385, 0.07959377352069298, 0.3008057440019911, 0.04207500467704709, 0.14875124421294977, 0.08921617728940744, 0.2309868296807898, 0.16467080061348888, 0.10071996432400608, -0.24261831283573493, 0.06095089130810395, 0.020554779974710464] |
709.3962 | Combinatorial Gelfand Models | A combinatorial construction of a Gelafand model for the symmetric group and
its Iwahori-Hecke algebra is presented.
| math.RT math.CO | a combinatorial construction of a gelafand model for the symmetric group and its iwahorihecke algebra is presented | [['a', 'combinatorial', 'construction', 'of', 'a', 'gelafand', 'model', 'for', 'the', 'symmetric', 'group', 'and', 'its', 'iwahorihecke', 'algebra', 'is', 'presented']] | [-0.16474207863211632, 0.00206147157587111, -0.13555754942353815, 0.05167301806068281, -0.1722950132098049, -0.1548511243017856, -0.010165688814595342, 0.3207782208919525, -0.3506231259088963, -0.18250557803548872, 0.2000076647673268, -0.16957700089551508, -0.17016283934935927, 0.17992292407143395, -0.13190559577196836, -0.08767149201958091, 0.055575432954356074, 0.1559788507875055, -0.13583423291083818, -0.19105932349339128, 0.34414244088111445, 0.08971556497272104, 0.23813472998153884, -0.017427594168111682, 0.15799204376526177, 0.05042361866799183, -0.07795008033281192, -0.05938910972326994, -0.09733544726623222, 0.15647573245223612, 0.2633215009700507, 0.11141794407740235, 0.1581099363975227, -0.2945273577934131, -0.06081429727601062, 0.14662352547748014, 0.09052215307019651, 0.072396483970806, -0.15348575153620914, -0.27632847568020225, 0.09539251032401808, -0.32433516485616565, -0.14405249652918428, 0.008976428594905883, 0.13302622945047915, -0.07833366852719337, -0.2999093991238624, -0.031949488271493465, 0.08566006037290208, 0.11900352162774652, -0.08802827500767307, -0.13295379391638562, -0.06520832143723965, 0.04992997873341665, -0.11701806799828773, 0.019795363157754764, 0.12886138178873807, -0.10844049567822367, -0.2001539513003081, 0.456288467743434, 0.08251818222925067, -0.2358795201871544, 0.10200995660852641, -0.12843770062318072, -0.17992171627702191, 0.07528884569182992, 0.09433436626568437, 0.15575597761198878, -0.055952082911971956, 0.2321736535486707, -0.208980584400706, 0.003047496451472398, -0.029137006087694317, -0.03791450522840023, 0.1195123775396496, 0.16967634140746668, 0.004193925764411688, 0.18147359020076692, 0.08862566272728145, -0.07141902600415051, -0.38162968098185956, -0.20724674071425397, -0.15497814083937556, 0.04525217605987564, -0.14816272631196625, -0.20850087027065456, 0.5086573977023363, 0.022054979810491204, 0.10468352393945679, 0.13645704369992018, 0.19148584874346852, 0.0696401484310627, 0.09899022246827371, 0.005286913394229487, 0.08765231404686347, 0.32586998376064, -0.018315481953322887, -0.17895900490111671, -0.03723636732320301, 0.26195658539654687] |
709.3963 | Two-Point Functions of Coulomb Gauge Yang-Mills Theory | The functional approach to Coulomb gauge Yang-Mills theory is considered
within the standard, second order, formalism. The Dyson-Schwinger equations and
Slavnov-Taylor identities concerning the two-point functions are derived
explicitly and one-loop perturbative results are presented.
| hep-th hep-lat hep-ph | the functional approach to coulomb gauge yangmills theory is considered within the standard second order formalism the dysonschwinger equations and slavnovtaylor identities concerning the twopoint functions are derived explicitly and oneloop perturbative results are presented | [['the', 'functional', 'approach', 'to', 'coulomb', 'gauge', 'yangmills', 'theory', 'is', 'considered', 'within', 'the', 'standard', 'second', 'order', 'formalism', 'the', 'dysonschwinger', 'equations', 'and', 'slavnovtaylor', 'identities', 'concerning', 'the', 'twopoint', 'functions', 'are', 'derived', 'explicitly', 'and', 'oneloop', 'perturbative', 'results', 'are', 'presented']] | [-0.11658835500212653, 0.11276955897254604, -0.12695750562208039, 0.18467531731418732, -0.0975401912948915, -0.06108716135578496, -0.039751359624122934, 0.2863470261650426, -0.19037725467767033, -0.24112101145354764, -0.0035520270466804504, -0.3265381634767566, -0.20625609830021857, 0.07839751935430936, 0.05671086723117956, 0.12025550289877823, -0.003723327782271164, 0.028358299684311663, -0.15172543078660966, -0.3349206967279315, 0.3355593010916242, -0.04657638272536652, 0.2591050356626511, 0.1316623837687075, 0.10132028750543083, 0.05185224273840764, -0.09169827956440194, -0.017126655485481024, -0.13606250190309116, 0.1154119822296447, 0.26038790390427624, 0.01995160977489182, 0.17529174142650195, -0.44219858332404066, -0.16640732591705662, -0.05907407520072801, 0.11712669397571257, 0.1701450341780271, 0.04170540403574705, -0.32227730453014375, 0.10444839190957801, -0.2002095393570406, -0.201313663104416, -0.19091158977576664, -0.09249459498428873, -0.05453749915052738, -0.2854388602876237, 0.15624002254834132, -0.08913142289966344, -0.024908261533294406, -0.05709023335948586, -0.15287712912208268, -0.0738383841966944, 0.09991978875228337, 0.11719668165647558, 0.061759077358458724, 0.11635225266218185, -0.21677385390337026, -0.12768474152211898, 0.40952823900151997, -0.02576698289984571, -0.26553914406602935, 0.0983732462927167, -0.150795460306108, -0.1648978869696813, 0.050808791230831825, 0.05745412461193544, 0.1771597858651408, -0.2927745436717357, 0.2687281735208152, -0.02472470471901553, 0.07694924369986568, 0.07985162296598511, 0.01967381297477654, 0.1043447379555021, 0.008551620638796262, -0.07226244839174407, 0.08020218405207354, 0.09409622720309667, -0.23252507421587196, -0.5267970957926341, -0.035064443000529924, -0.10408869383058378, 0.021723438879208905, -0.15489566472408894, -0.16885969444577184, 0.3452888434860922, 0.15564345211855002, 0.01362109126390091, 0.12845462947817785, 0.2793487752122538, 0.3025333922356367, 0.11490413865872792, 0.0007900209166109562, 0.22584858600582394, 0.30928785258105823, 0.07666710519364901, -0.258085007500735, -0.12963728137048228, 0.32429594277803386] |
709.3964 | Fast and Slow Rotators: The build-up of the Red Sequence | Using the unique dataset obtained within the course of the SAURON project, a
radically new view of the structure, dynamics and stellar populations of
early-type galaxies has emerged. We show that galaxies come in two broad
flavours (slow and fast rotators), depending on whether or not they exhibit
clear large-scale rotation, as indicated via a robust measure of the specific
angular momentum of baryons. This property is also linked with other physical
characteristics of early-type galaxies, such as: the presence of dynamically
decoupled cores, orbital structure and anisotropy, stellar populations and dark
matter content. I here report on the observed link between this baryonic
angular momentum and a mass sequence, and how this uniquely relates to the
building of the red sequence via dissipative/dissipationless mergers and
secular evolution.
| astro-ph | using the unique dataset obtained within the course of the sauron project a radically new view of the structure dynamics and stellar populations of earlytype galaxies has emerged we show that galaxies come in two broad flavours slow and fast rotators depending on whether or not they exhibit clear largescale rotation as indicated via a robust measure of the specific angular momentum of baryons this property is also linked with other physical characteristics of earlytype galaxies such as the presence of dynamically decoupled cores orbital structure and anisotropy stellar populations and dark matter content i here report on the observed link between this baryonic angular momentum and a mass sequence and how this uniquely relates to the building of the red sequence via dissipativedissipationless mergers and secular evolution | [['using', 'the', 'unique', 'dataset', 'obtained', 'within', 'the', 'course', 'of', 'the', 'sauron', 'project', 'a', 'radically', 'new', 'view', 'of', 'the', 'structure', 'dynamics', 'and', 'stellar', 'populations', 'of', 'earlytype', 'galaxies', 'has', 'emerged', 'we', 'show', 'that', 'galaxies', 'come', 'in', 'two', 'broad', 'flavours', 'slow', 'and', 'fast', 'rotators', 'depending', 'on', 'whether', 'or', 'not', 'they', 'exhibit', 'clear', 'largescale', 'rotation', 'as', 'indicated', 'via', 'a', 'robust', 'measure', 'of', 'the', 'specific', 'angular', 'momentum', 'of', 'baryons', 'this', 'property', 'is', 'also', 'linked', 'with', 'other', 'physical', 'characteristics', 'of', 'earlytype', 'galaxies', 'such', 'as', 'the', 'presence', 'of', 'dynamically', 'decoupled', 'cores', 'orbital', 'structure', 'and', 'anisotropy', 'stellar', 'populations', 'and', 'dark', 'matter', 'content', 'i', 'here', 'report', 'on', 'the', 'observed', 'link', 'between', 'this', 'baryonic', 'angular', 'momentum', 'and', 'a', 'mass', 'sequence', 'and', 'how', 'this', 'uniquely', 'relates', 'to', 'the', 'building', 'of', 'the', 'red', 'sequence', 'via', 'dissipativedissipationless', 'mergers', 'and', 'secular', 'evolution']] | [-0.10941916087451647, 0.1448118872427213, -0.121159661245921, 0.08707397733815014, -0.11213216273568746, -0.04128091943112942, 0.028746542742651864, 0.3997313417200967, -0.2310758157847284, -0.35009181009620194, 0.027783934340911264, -0.22607213063083045, -0.1014107321118606, 0.17930683688128615, -0.006513364545223633, -0.026754058624331757, 0.06609568607078602, -0.055093544156731275, -0.04692338622912148, -0.23605371998828345, 0.3750501992584272, 0.027834424932347977, 0.19627920237890495, -0.03636119180674276, 0.10814857853972536, -0.0645482215066037, -0.0888781485140441, -0.015866530153489725, -0.13499117736993624, 0.03623323777404533, 0.1902036096416707, 0.14700841790754496, 0.22521293690376806, -0.3835752790749777, -0.1543216042176593, 0.09095801923086676, 0.22216836206145643, 0.07999287563280796, -0.13040535563903707, -0.25957646935180884, 0.038125187998241564, -0.16037779435786734, -0.15947037581427712, -0.030574621680361316, 0.03309036084857777, 0.04981989387100137, -0.19199660959869888, 0.1465720955562488, 0.05891757968109189, 0.09610296599566936, -0.07465182792204689, -0.09999248044433322, -0.10522108197974878, 0.118120978041882, 0.06364821292657963, 0.045204071753372356, 0.18120470927940227, -0.1366040975636414, -0.060390643849712246, 0.4109506495296955, -0.05801845750382801, -0.10020852055928604, 0.25531165709161735, -0.1947464501910557, -0.1733798668536497, 0.06340338519818377, 0.19111219871107224, 0.09178619849400257, -0.1617127129171909, 0.007368808697018127, -0.033850331086753394, 0.21899010503561947, 0.02331175134832582, 0.09483945743349476, 0.3466674189163944, 0.14013991498307685, 0.016094057270743714, 0.0551301019534828, -0.12724018274755108, -0.07269380198732957, -0.20199260859581547, -0.1222938759569592, -0.1474013162197501, 0.08820504869719853, -0.10675186991215387, -0.14030499680070427, 0.40692699454196796, 0.07565175545941323, 0.247512430801445, 0.03297994946696572, 0.29462431641075554, 0.0542696106529934, 0.11493941057770418, 0.0986982114048396, 0.26659679999501684, 0.17178107681901902, 0.10122977456767258, -0.2999752306482043, 0.04693770655050441, -0.017902654834003665] |
709.3965 | Evolving Classifiers: Methods for Incremental Learning | The ability of a classifier to take on new information and classes by
evolving the classifier without it having to be fully retrained is known as
incremental learning. Incremental learning has been successfully applied to
many classification problems, where the data is changing and is not all
available at once. In this paper there is a comparison between Learn++, which
is one of the most recent incremental learning algorithms, and the new proposed
method of Incremental Learning Using Genetic Algorithm (ILUGA). Learn++ has
shown good incremental learning capabilities on benchmark datasets on which the
new ILUGA method has been tested. ILUGA has also shown good incremental
learning ability using only a few classifiers and does not suffer from
catastrophic forgetting. The results obtained for ILUGA on the Optical
Character Recognition (OCR) and Wine datasets are good, with an overall
accuracy of 93% and 94% respectively showing a 4% improvement over Learn++.MT
for the difficult multi-class OCR dataset.
| cs.LG cs.AI cs.NE | the ability of a classifier to take on new information and classes by evolving the classifier without it having to be fully retrained is known as incremental learning incremental learning has been successfully applied to many classification problems where the data is changing and is not all available at once in this paper there is a comparison between learn which is one of the most recent incremental learning algorithms and the new proposed method of incremental learning using genetic algorithm iluga learn has shown good incremental learning capabilities on benchmark datasets on which the new iluga method has been tested iluga has also shown good incremental learning ability using only a few classifiers and does not suffer from catastrophic forgetting the results obtained for iluga on the optical character recognition ocr and wine datasets are good with an overall accuracy of 93 and 94 respectively showing a 4 improvement over learnmt for the difficult multiclass ocr dataset | [['the', 'ability', 'of', 'a', 'classifier', 'to', 'take', 'on', 'new', 'information', 'and', 'classes', 'by', 'evolving', 'the', 'classifier', 'without', 'it', 'having', 'to', 'be', 'fully', 'retrained', 'is', 'known', 'as', 'incremental', 'learning', 'incremental', 'learning', 'has', 'been', 'successfully', 'applied', 'to', 'many', 'classification', 'problems', 'where', 'the', 'data', 'is', 'changing', 'and', 'is', 'not', 'all', 'available', 'at', 'once', 'in', 'this', 'paper', 'there', 'is', 'a', 'comparison', 'between', 'learn', 'which', 'is', 'one', 'of', 'the', 'most', 'recent', 'incremental', 'learning', 'algorithms', 'and', 'the', 'new', 'proposed', 'method', 'of', 'incremental', 'learning', 'using', 'genetic', 'algorithm', 'iluga', 'learn', 'has', 'shown', 'good', 'incremental', 'learning', 'capabilities', 'on', 'benchmark', 'datasets', 'on', 'which', 'the', 'new', 'iluga', 'method', 'has', 'been', 'tested', 'iluga', 'has', 'also', 'shown', 'good', 'incremental', 'learning', 'ability', 'using', 'only', 'a', 'few', 'classifiers', 'and', 'does', 'not', 'suffer', 'from', 'catastrophic', 'forgetting', 'the', 'results', 'obtained', 'for', 'iluga', 'on', 'the', 'optical', 'character', 'recognition', 'ocr', 'and', 'wine', 'datasets', 'are', 'good', 'with', 'an', 'overall', 'accuracy', 'of', '93', 'and', '94', 'respectively', 'showing', 'a', '4', 'improvement', 'over', 'learnmt', 'for', 'the', 'difficult', 'multiclass', 'ocr', 'dataset']] | [0.010676054780980429, -0.02832497263434328, -0.09574177996882309, 0.029344988777899206, -0.1300764866412068, -0.21408768984465262, 0.03227652479873564, 0.4569420314226777, -0.24753464126544528, -0.351218855032363, 0.1229537456342652, -0.26792626829, -0.16191892061704913, 0.2576044295078296, -0.1451216128308517, 0.10846007062877433, 0.1613622940121553, 0.10081790766950387, -0.05741802728973711, -0.3528308718993615, 0.26696357271896726, 0.054840353039953, 0.33143160647924585, 0.042820108364909314, 0.1612001167175969, -0.03383556917684379, -0.02409270799193436, 0.023002439019947838, -0.03368586830597801, 0.13990772285540468, 0.3135018629493574, 0.20463048890889743, 0.34075114320820343, -0.3360915870692294, -0.2072199710453741, 0.13767235293366517, 0.1589974483492999, 0.13822358079535965, -0.053275894617679745, -0.3183300552937465, 0.12594253432829505, -0.17742085457445148, 0.03272380709695893, -0.16977389360992953, 0.00036523025184392166, -0.014341338581382446, -0.2762273939875647, 0.003346260816331965, 0.08176307951530012, 0.08474002498629628, -0.05908115197552177, -0.1376163495453791, 0.034315768286036566, 0.152509101805313, 0.03569171399860165, 0.09691830288591938, 0.09070370623913522, -0.1426400505916741, -0.1653581346737412, 0.36596680325993264, -0.06078682294061694, -0.16872432344975188, 0.24090623737085992, 0.0006098847161644163, -0.15506159072407547, 0.1492455011496368, 0.2171772410436414, 0.09878014417317434, -0.17301081040372643, 0.034058534305166595, -0.05005050691453597, 0.18100241551963756, 0.048805928823406786, -0.05870986991645529, 0.12537695688959688, 0.26086045449408585, 0.009746868382372225, 0.11229416735780735, -0.1185034153302415, -0.047105609122156285, -0.1734074060320078, -0.08438424919791615, -0.2109996986833628, -0.03251626237742573, -0.09857519536867934, -0.14671240513304767, 0.3804900756132646, 0.19573576878517485, 0.1824326241084446, 0.0904776330705947, 0.3175792889908338, 0.04171164280612571, 0.15176745282653242, 0.1398684755534841, 0.23847174017096107, 0.0348798840572365, 0.12116979297402744, -0.17971440055258334, 0.1338312459717063, 0.029230508466776557] |
709.3966 | Simulation of fluid flow in hydrophobic rough microchannels | Surface effects become important in microfluidic setups because the surface
to volume ratio becomes large. In such setups the surface roughness is not any
longer small compared to the length scale of the system and the wetting
properties of the wall have an important influence on the flow. However, the
knowledge about the interplay of surface roughness and hydrophobic
fluid-surface interaction is still very limited because these properties cannot
be decoupled easily in experiments.
We investigate the problem by means of lattice Boltzmann (LB) simulations of
rough microchannels with a tunable fluid-wall interaction. We introduce an
``effective no-slip plane'' at an intermediate position between peaks and
valleys of the surface and observe how the position of the wall may change due
to surface roughness and hydrophobic interactions.
We find that the position of the effective wall, in the case of a Gaussian
distributed roughness depends linearly on the width of the distribution.
Further we are able to show that roughness creates a non-linear effect on the
slip length for hydrophobic boundaries.
| cond-mat.soft physics.flu-dyn | surface effects become important in microfluidic setups because the surface to volume ratio becomes large in such setups the surface roughness is not any longer small compared to the length scale of the system and the wetting properties of the wall have an important influence on the flow however the knowledge about the interplay of surface roughness and hydrophobic fluidsurface interaction is still very limited because these properties cannot be decoupled easily in experiments we investigate the problem by means of lattice boltzmann lb simulations of rough microchannels with a tunable fluidwall interaction we introduce an effective noslip plane at an intermediate position between peaks and valleys of the surface and observe how the position of the wall may change due to surface roughness and hydrophobic interactions we find that the position of the effective wall in the case of a gaussian distributed roughness depends linearly on the width of the distribution further we are able to show that roughness creates a nonlinear effect on the slip length for hydrophobic boundaries | [['surface', 'effects', 'become', 'important', 'in', 'microfluidic', 'setups', 'because', 'the', 'surface', 'to', 'volume', 'ratio', 'becomes', 'large', 'in', 'such', 'setups', 'the', 'surface', 'roughness', 'is', 'not', 'any', 'longer', 'small', 'compared', 'to', 'the', 'length', 'scale', 'of', 'the', 'system', 'and', 'the', 'wetting', 'properties', 'of', 'the', 'wall', 'have', 'an', 'important', 'influence', 'on', 'the', 'flow', 'however', 'the', 'knowledge', 'about', 'the', 'interplay', 'of', 'surface', 'roughness', 'and', 'hydrophobic', 'fluidsurface', 'interaction', 'is', 'still', 'very', 'limited', 'because', 'these', 'properties', 'can', 'not', 'be', 'decoupled', 'easily', 'in', 'experiments', 'we', 'investigate', 'the', 'problem', 'by', 'means', 'of', 'lattice', 'boltzmann', 'lb', 'simulations', 'of', 'rough', 'microchannels', 'with', 'a', 'tunable', 'fluidwall', 'interaction', 'we', 'introduce', 'an', 'effective', 'noslip', 'plane', 'at', 'an', 'intermediate', 'position', 'between', 'peaks', 'and', 'valleys', 'of', 'the', 'surface', 'and', 'observe', 'how', 'the', 'position', 'of', 'the', 'wall', 'may', 'change', 'due', 'to', 'surface', 'roughness', 'and', 'hydrophobic', 'interactions', 'we', 'find', 'that', 'the', 'position', 'of', 'the', 'effective', 'wall', 'in', 'the', 'case', 'of', 'a', 'gaussian', 'distributed', 'roughness', 'depends', 'linearly', 'on', 'the', 'width', 'of', 'the', 'distribution', 'further', 'we', 'are', 'able', 'to', 'show', 'that', 'roughness', 'creates', 'a', 'nonlinear', 'effect', 'on', 'the', 'slip', 'length', 'for', 'hydrophobic', 'boundaries']] | [-0.13195550789711424, 0.19729327519888218, -0.11315815117957659, 0.037880215720322574, -0.05104466478138814, -0.11407792935153328, 0.003823220592308027, 0.40277388010021536, -0.30596500359562756, -0.29532993621089393, 0.07189593708676378, -0.25964477231279454, -0.1438800515797621, 0.1933014346232191, -0.05381392485227937, 0.02389948597798745, 0.0342837515969935, -0.025406722435509864, -0.041496842161463626, -0.19532747453960933, 0.3123813692680478, 0.05152636623467531, 0.3001878270879388, 0.18244779620003718, 0.05937688603822948, 0.0123503227644649, 0.026872058832004928, 0.06564391503513556, -0.18742318514760717, 0.08722685916691049, 0.17632255024666085, -0.05531732201826764, 0.23128476435024486, -0.473755555673998, -0.228219636541666, 0.05192426962189769, 0.1465340558240702, 0.1309740239882308, -0.015224540382160734, -0.23956845850923386, 0.05374574630210797, -0.08680520391865083, -0.1425994592950249, 0.007592957273495999, 0.03468401215109996, 0.020518374048603686, -0.20550104175634376, 0.08866623203114916, 0.04198265776762532, 0.08007123268193059, -0.04686050140026587, -0.0893777458137446, -0.06587109378980179, 0.13924291327238977, 0.06876272688843092, 0.0027198994788205067, 0.19587135668952912, -0.17303952068833864, -0.02178559633385804, 0.3886756725304308, -0.05824048558865505, -0.2635311550891016, 0.24072211677459074, -0.14480489758197326, -0.01638283156817071, 0.17225714110121218, 0.20400356306736658, 0.10222454403107714, -0.11074567156195728, 0.05474838247074751, -0.014321673715933722, 0.22609179300577406, 0.0834423880329715, 0.007468340858512106, 0.23484124347828983, 0.20462697466606633, 0.09526324925851622, 0.14233872053868338, -0.16053004455221653, -0.07781360332434725, -0.27319927462403887, -0.14357210806031762, -0.19589323591582522, 0.00291940767596454, -0.10411297067159403, -0.2111440126114247, 0.3391783303793585, 0.1450748990204087, 0.20712277166986545, 0.02093513509291306, 0.24742765263720667, 0.07169559551947559, 0.09567646864169871, 0.059514183374067324, 0.252866195027692, 0.10120232232535879, 0.06661688592434692, -0.2822940323327543, 0.11167905303889243, 0.005748758703873259] |
709.3967 | Classification of Images Using Support Vector Machines | Support Vector Machines (SVMs) are a relatively new supervised classification
technique to the land cover mapping community. They have their roots in
Statistical Learning Theory and have gained prominence because they are robust,
accurate and are effective even when using a small training sample. By their
nature SVMs are essentially binary classifiers, however, they can be adopted to
handle the multiple classification tasks common in remote sensing studies. The
two approaches commonly used are the One-Against-One (1A1) and One-Against-All
(1AA) techniques. In this paper, these approaches are evaluated in as far as
their impact and implication for land cover mapping. The main finding from this
research is that whereas the 1AA technique is more predisposed to yielding
unclassified and mixed pixels, the resulting classification accuracy is not
significantly different from 1A1 approach. It is the authors conclusions that
ultimately the choice of technique adopted boils down to personal preference
and the uniqueness of the dataset at hand.
| cs.LG cs.AI | support vector machines svms are a relatively new supervised classification technique to the land cover mapping community they have their roots in statistical learning theory and have gained prominence because they are robust accurate and are effective even when using a small training sample by their nature svms are essentially binary classifiers however they can be adopted to handle the multiple classification tasks common in remote sensing studies the two approaches commonly used are the oneagainstone 1a1 and oneagainstall 1aa techniques in this paper these approaches are evaluated in as far as their impact and implication for land cover mapping the main finding from this research is that whereas the 1aa technique is more predisposed to yielding unclassified and mixed pixels the resulting classification accuracy is not significantly different from 1a1 approach it is the authors conclusions that ultimately the choice of technique adopted boils down to personal preference and the uniqueness of the dataset at hand | [['support', 'vector', 'machines', 'svms', 'are', 'a', 'relatively', 'new', 'supervised', 'classification', 'technique', 'to', 'the', 'land', 'cover', 'mapping', 'community', 'they', 'have', 'their', 'roots', 'in', 'statistical', 'learning', 'theory', 'and', 'have', 'gained', 'prominence', 'because', 'they', 'are', 'robust', 'accurate', 'and', 'are', 'effective', 'even', 'when', 'using', 'a', 'small', 'training', 'sample', 'by', 'their', 'nature', 'svms', 'are', 'essentially', 'binary', 'classifiers', 'however', 'they', 'can', 'be', 'adopted', 'to', 'handle', 'the', 'multiple', 'classification', 'tasks', 'common', 'in', 'remote', 'sensing', 'studies', 'the', 'two', 'approaches', 'commonly', 'used', 'are', 'the', 'oneagainstone', '1a1', 'and', 'oneagainstall', '1aa', 'techniques', 'in', 'this', 'paper', 'these', 'approaches', 'are', 'evaluated', 'in', 'as', 'far', 'as', 'their', 'impact', 'and', 'implication', 'for', 'land', 'cover', 'mapping', 'the', 'main', 'finding', 'from', 'this', 'research', 'is', 'that', 'whereas', 'the', '1aa', 'technique', 'is', 'more', 'predisposed', 'to', 'yielding', 'unclassified', 'and', 'mixed', 'pixels', 'the', 'resulting', 'classification', 'accuracy', 'is', 'not', 'significantly', 'different', 'from', '1a1', 'approach', 'it', 'is', 'the', 'authors', 'conclusions', 'that', 'ultimately', 'the', 'choice', 'of', 'technique', 'adopted', 'boils', 'down', 'to', 'personal', 'preference', 'and', 'the', 'uniqueness', 'of', 'the', 'dataset', 'at', 'hand']] | [-0.027900409081707572, 0.06516691906508176, -0.09531070682617604, 0.09494458567084163, -0.1143719990245381, -0.17927839025313028, 0.06106029456825393, 0.43897170300601396, -0.2644167043577144, -0.3390582750320055, 0.1558130789951534, -0.27468356220229606, -0.13596668253077349, 0.21685167383936466, -0.10825695806912555, 0.0740263714532184, 0.10022136977737307, 0.035082301255434184, -0.05423307544878049, -0.30912369779744153, 0.2996493383328531, 0.02902906185763467, 0.31912499595919896, 0.02319170487006521, 0.054032557750725824, -0.028690220126704236, -0.05805474579049524, 0.025584511636833476, -0.03867753665380041, 0.15757033373021587, 0.3467181472472585, 0.18866346256249839, 0.31269784903177505, -0.35190646117085045, -0.21134473356732708, 0.11792988992135996, 0.16128547795956277, 0.10754995566502118, 0.004489266483693763, -0.2762682578492328, 0.10871996730862624, -0.13766431170189455, -0.03700298545615166, -0.11829423974416438, -0.009423885470742632, 0.023191482240962943, -0.23487844623352408, 0.055402040406490626, 0.07690940953043711, 0.07462298259091606, -0.06628376579173147, -0.1587168740992476, -0.0009300830613845472, 0.16936401353951003, 0.06055496488386397, 0.05337051251476073, 0.1355296809605922, -0.14853263384466814, -0.09892641740797717, 0.3775569139297601, 0.010074952514219294, -0.20182271495129273, 0.2645290270388411, -0.05256524340065706, -0.15675536815409258, 0.11716708689216215, 0.20237011635441712, 0.12374985285376193, -0.1570408472508247, 0.01978743471765808, -0.033492955022897855, 0.14134845579529454, 0.057493279065201235, -0.0070312394224630766, 0.20474568482156202, 0.18104627660837522, 0.042211796226762945, 0.07138290963577593, -0.1084219900754749, -0.05979278664383444, -0.17247547284710357, -0.08705344809295987, -0.17811748797109553, -0.016837409458617728, -0.05660544683104589, -0.14822667346270696, 0.34861318404032926, 0.19871549722946183, 0.1779327792542613, 0.06586402913282631, 0.3130762440621094, 0.06364071146276584, 0.12260283474739238, 0.07098466693435275, 0.2479748803815229, 0.08814685447156358, 0.10123295650615766, -0.13614731126503463, 0.09564147902367885, 0.0282640447543495] |
709.3968 | Dynamics with Infinitely Many Derivatives: The Initial Value Problem | Differential equations of infinite order are an increasingly important class
of equations in theoretical physics. Such equations are ubiquitous in string
field theory and have recently attracted considerable interest also from
cosmologists. Though these equations have been studied in the classical
mathematical literature, it appears that the physics community is largely
unaware of the relevant formalism. Of particular importance is the fate of the
initial value problem. Under what circumstances do infinite order differential
equations possess a well-defined initial value problem and how many initial
data are required? In this paper we study the initial value problem for
infinite order differential equations in the mathematical framework of the
formal operator calculus, with analytic initial data. This formalism allows us
to handle simultaneously a wide array of different nonlocal equations within a
single framework and also admits a transparent physical interpretation. We show
that differential equations of infinite order do not generically admit
infinitely many initial data. Rather, each pole of the propagator contributes
two initial data to the final solution. Though it is possible to find
differential equations of infinite order which admit well-defined initial value
problem with only two initial data, neither the dynamical equations of p-adic
string theory nor string field theory seem to belong to this class. However,
both theories can be rendered ghost-free by suitable definition of the action
of the formal pseudo-differential operator. This prescription restricts the
theory to frequencies within some contour in the complex plane and hence may be
thought of as a sort of ultra-violet cut-off.
| hep-th math-ph math.MP | differential equations of infinite order are an increasingly important class of equations in theoretical physics such equations are ubiquitous in string field theory and have recently attracted considerable interest also from cosmologists though these equations have been studied in the classical mathematical literature it appears that the physics community is largely unaware of the relevant formalism of particular importance is the fate of the initial value problem under what circumstances do infinite order differential equations possess a welldefined initial value problem and how many initial data are required in this paper we study the initial value problem for infinite order differential equations in the mathematical framework of the formal operator calculus with analytic initial data this formalism allows us to handle simultaneously a wide array of different nonlocal equations within a single framework and also admits a transparent physical interpretation we show that differential equations of infinite order do not generically admit infinitely many initial data rather each pole of the propagator contributes two initial data to the final solution though it is possible to find differential equations of infinite order which admit welldefined initial value problem with only two initial data neither the dynamical equations of padic string theory nor string field theory seem to belong to this class however both theories can be rendered ghostfree by suitable definition of the action of the formal pseudodifferential operator this prescription restricts the theory to frequencies within some contour in the complex plane and hence may be thought of as a sort of ultraviolet cutoff | [['differential', 'equations', 'of', 'infinite', 'order', 'are', 'an', 'increasingly', 'important', 'class', 'of', 'equations', 'in', 'theoretical', 'physics', 'such', 'equations', 'are', 'ubiquitous', 'in', 'string', 'field', 'theory', 'and', 'have', 'recently', 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709.3969 | Loss of control in pattern-directed nucleation: a theoretical study | The properties of template-directed nucleation are studied close to the
transition where full nucleation control is lost and additional nucleation
occurs beyond the pre-patterned regions. First, kinetic Monte Carlo simulations
are performed to obtain information on a microscopic level. Here the
experimentally relevant cases of 1D stripe patterns and 2D square lattice
symmetry are considered. The nucleation properties in the transition region
depend in a complex way on the parameters of the system, i.e. the flux, the
surface diffusion constant, the geometric properties of the pattern and the
desorption rate. Second, the properties of the stationary concentration field
in the fully controlled case are studied to derive the remaining nucleation
probability and thus to characterize the loss of nucleation control. Using the
analytically accessible solution of a model system with purely radial symmetry,
some of the observed properties can be rationalized. A detailed comparison to
the Monte Carlo data is included.
| cond-mat.mtrl-sci | the properties of templatedirected nucleation are studied close to the transition where full nucleation control is lost and additional nucleation occurs beyond the prepatterned regions first kinetic monte carlo simulations are performed to obtain information on a microscopic level here the experimentally relevant cases of 1d stripe patterns and 2d square lattice symmetry are considered the nucleation properties in the transition region depend in a complex way on the parameters of the system ie the flux the surface diffusion constant the geometric properties of the pattern and the desorption rate second the properties of the stationary concentration field in the fully controlled case are studied to derive the remaining nucleation probability and thus to characterize the loss of nucleation control using the analytically accessible solution of a model system with purely radial symmetry some of the observed properties can be rationalized a detailed comparison to the monte carlo data is included | [['the', 'properties', 'of', 'templatedirected', 'nucleation', 'are', 'studied', 'close', 'to', 'the', 'transition', 'where', 'full', 'nucleation', 'control', 'is', 'lost', 'and', 'additional', 'nucleation', 'occurs', 'beyond', 'the', 'prepatterned', 'regions', 'first', 'kinetic', 'monte', 'carlo', 'simulations', 'are', 'performed', 'to', 'obtain', 'information', 'on', 'a', 'microscopic', 'level', 'here', 'the', 'experimentally', 'relevant', 'cases', 'of', '1d', 'stripe', 'patterns', 'and', '2d', 'square', 'lattice', 'symmetry', 'are', 'considered', 'the', 'nucleation', 'properties', 'in', 'the', 'transition', 'region', 'depend', 'in', 'a', 'complex', 'way', 'on', 'the', 'parameters', 'of', 'the', 'system', 'ie', 'the', 'flux', 'the', 'surface', 'diffusion', 'constant', 'the', 'geometric', 'properties', 'of', 'the', 'pattern', 'and', 'the', 'desorption', 'rate', 'second', 'the', 'properties', 'of', 'the', 'stationary', 'concentration', 'field', 'in', 'the', 'fully', 'controlled', 'case', 'are', 'studied', 'to', 'derive', 'the', 'remaining', 'nucleation', 'probability', 'and', 'thus', 'to', 'characterize', 'the', 'loss', 'of', 'nucleation', 'control', 'using', 'the', 'analytically', 'accessible', 'solution', 'of', 'a', 'model', 'system', 'with', 'purely', 'radial', 'symmetry', 'some', 'of', 'the', 'observed', 'properties', 'can', 'be', 'rationalized', 'a', 'detailed', 'comparison', 'to', 'the', 'monte', 'carlo', 'data', 'is', 'included']] | [-0.11093832910776336, 0.13590503867795778, -0.0769929130351948, 0.07633183287481303, -0.03161775742947365, -0.08051543427470899, 0.06435927535277723, 0.36988037826481046, -0.29401882303823157, -0.2922843157850354, 0.10964052364405935, -0.25841447639060117, -0.10204482982736944, 0.1649494364931686, 0.043150590811910056, 0.04890962516031666, -0.003645422048126625, 0.009995024160956902, -0.08520636126547065, -0.22823002227637545, 0.26088821776797194, 0.07513485538976773, 0.30024213616162637, 0.03522037138887959, 0.05711011035407937, -0.024482037089934683, 0.016611823300979045, 0.013538815575390757, -0.25453880029909365, 0.06945110400151831, 0.17522865271238944, 0.020859619328098385, 0.18610877210015295, -0.45279967909469115, -0.2537552419269692, 0.04943053779926225, 0.14499009762650097, 0.141427085136637, -0.0638875352998961, -0.2568025392841005, 0.04335546481580356, -0.10384912272477337, -0.14990350350772072, -0.055243023338154056, -0.03113033483344568, 0.047595770938618, -0.26469649014908153, 0.11691508637872272, 0.01854679064011041, 0.06772552381288137, -0.06787855857335623, -0.06769263712436405, -0.09853357590414238, 0.13277061097092605, 0.015666154294658494, -0.017226563104920226, 0.18002861070397327, -0.14474383064712218, -0.09817369844585608, 0.38970445200110115, -0.020129736443512784, -0.18824998990459899, 0.18478675518147894, -0.18851613192911573, -0.08500208486401975, 0.20689870858416948, 0.14330959158146983, 0.14813752733602725, -0.17694386479056237, 0.06707247118280571, 0.007924542592727388, 0.15144471850690266, 0.021815491642876966, 0.0045611071554536855, 0.18837223351865218, 0.21373393046145409, 0.006732372745920885, 0.1599425869239864, -0.11915016415473444, -0.17756182151200522, -0.29996077988346087, -0.14648465118340112, -0.21112556094982174, 0.027345058714835255, -0.07961227878309873, -0.17081334586532798, 0.3570619902098613, 0.13983976112027954, 0.185393133283969, 0.008994403319889741, 0.24201465659275256, 0.11388348284430358, 0.04426021485694295, 0.019298354592420998, 0.25011753702990325, 0.15181098220752712, 0.07274802608896565, -0.27152996702256166, 0.10487994713560733, 0.05142450496702399] |
709.397 | Integral Field Spectrographs: a user's view | We easily tend to think of Integral-Field Spectrographs (IFS) along two
opposing trends: as either the beautiful combination between photometry and
spectroscopy, or as our worst nightmare including the dark side of both worlds.
I favour a view where each IFS is considered individually, as one instrument
with specific performances which can be used optimally for a certain range of
scientific programs. It is indeed true that data-wise, IFS do sometime merge
the characteristics of classic (e.g., long-slit) spectrographs with annoying
issues associated with Imagers. This is in fact the price to pay to access a
drastically different perspective of our favourite targets. The challenge is
then to provide the necessary tools to properly handle the corresponding data.
However, this should certainly not be thought as something specific to IFS:
such a challenge should be accepted for any instrument, and most importantly
solved prior to its delivery at the telescope.
| astro-ph | we easily tend to think of integralfield spectrographs ifs along two opposing trends as either the beautiful combination between photometry and spectroscopy or as our worst nightmare including the dark side of both worlds i favour a view where each ifs is considered individually as one instrument with specific performances which can be used optimally for a certain range of scientific programs it is indeed true that datawise ifs do sometime merge the characteristics of classic eg longslit spectrographs with annoying issues associated with imagers this is in fact the price to pay to access a drastically different perspective of our favourite targets the challenge is then to provide the necessary tools to properly handle the corresponding data however this should certainly not be thought as something specific to ifs such a challenge should be accepted for any instrument and most importantly solved prior to its delivery at the telescope | [['we', 'easily', 'tend', 'to', 'think', 'of', 'integralfield', 'spectrographs', 'ifs', 'along', 'two', 'opposing', 'trends', 'as', 'either', 'the', 'beautiful', 'combination', 'between', 'photometry', 'and', 'spectroscopy', 'or', 'as', 'our', 'worst', 'nightmare', 'including', 'the', 'dark', 'side', 'of', 'both', 'worlds', 'i', 'favour', 'a', 'view', 'where', 'each', 'ifs', 'is', 'considered', 'individually', 'as', 'one', 'instrument', 'with', 'specific', 'performances', 'which', 'can', 'be', 'used', 'optimally', 'for', 'a', 'certain', 'range', 'of', 'scientific', 'programs', 'it', 'is', 'indeed', 'true', 'that', 'datawise', 'ifs', 'do', 'sometime', 'merge', 'the', 'characteristics', 'of', 'classic', 'eg', 'longslit', 'spectrographs', 'with', 'annoying', 'issues', 'associated', 'with', 'imagers', 'this', 'is', 'in', 'fact', 'the', 'price', 'to', 'pay', 'to', 'access', 'a', 'drastically', 'different', 'perspective', 'of', 'our', 'favourite', 'targets', 'the', 'challenge', 'is', 'then', 'to', 'provide', 'the', 'necessary', 'tools', 'to', 'properly', 'handle', 'the', 'corresponding', 'data', 'however', 'this', 'should', 'certainly', 'not', 'be', 'thought', 'as', 'something', 'specific', 'to', 'ifs', 'such', 'a', 'challenge', 'should', 'be', 'accepted', 'for', 'any', 'instrument', 'and', 'most', 'importantly', 'solved', 'prior', 'to', 'its', 'delivery', 'at', 'the', 'telescope']] | [-0.04952123471662315, 0.0545657708164267, -0.13393918536884722, 0.10384095817235542, -0.17508592690620883, -0.1987138454014773, 0.027243508105697548, 0.4079487919182385, -0.2744550104729594, -0.3290043759203497, 0.1617828790518774, -0.2868476759504852, -0.10596476031011033, 0.22828221818566596, -0.10297706954168694, 0.004641897839278408, 0.08783228486313815, -0.0015944387189865787, 0.004278879804886728, -0.2968833757206585, 0.2905883977202161, 0.08408095889206, 0.22699221132960695, 0.005695775281731664, 0.050729021590184296, -0.020154407582302022, -0.035617045586266174, 0.04115529528322111, -0.08753366804949904, 0.0880532422503019, 0.3323217073530459, 0.179947541410966, 0.3138886272341588, -0.4014022616332009, -0.18337244918607426, 0.09392360647852789, 0.17394869078773828, 0.032422534970647884, -0.0068552359741731175, -0.24289933502699104, 0.0703606950994206, -0.12594511174290574, -0.14796170271658057, -0.03286482710016254, -0.03798318078316398, 0.029666625453165462, -0.25713120816094215, -0.03156650091377681, 0.0008801392017044877, 0.05154311166913717, -0.05902220075559371, -0.09808552634102236, -0.027993538461456812, 0.17299033530312746, 0.02945586650838588, 0.04999990283742847, 0.1062464438165513, -0.14456846410933658, -0.08592275128662336, 0.4215261694356399, -0.04992522741824189, -0.15947384010350343, 0.2229693785353545, -0.16666594928368025, -0.17073601715273737, 0.08800075639464311, 0.134599808261311, 0.08380872365274786, -0.174844010617434, 0.011645159600521345, -0.01319710087287396, 0.18898856020438792, 0.07218740869316603, 0.0732657241762183, 0.27141869576622873, 0.11833924775350926, 0.0879233209119372, 0.08907911088317633, -0.1153741067735597, -0.05406122895007665, -0.2585341643304533, -0.16352379358304828, -0.14024933137862175, 0.05546167578664218, -0.034725829486027295, -0.14731151906885956, 0.31922503044627976, 0.17641671491265704, 0.18808037421397314, 0.013091784033880588, 0.34717270266889727, 0.06105231059927668, 0.1503204241576261, 0.018710461895187828, 0.24594374772531585, 0.022805827829186748, 0.14207527785243204, -0.13954311687789933, 0.08218347083780314, -0.019086809526510137] |
709.3971 | Inherent stochasticity of superconductive-resistive switching in
nanowires | Hysteresis in the current-voltage characteristic in a superconducting
nanowire reflects an underlying bistability. As the current is ramped up
repeatedly, the state switches from a superconductive to a resistive one, doing
so at random current values below the equilibrium critical current. Can a
single phase-slip event somewhere along the wire--during which the
order-parameter fluctuates to zero--induce such switching, via the local
heating it causes? We address this and related issues by constructing a
stochastic model for the time-evolution of the temperature in a nanowire whose
ends are maintained at a fixed temperature. The model indicates that although,
in general, several phase-slip events are necessary to induce switching, there
is indeed a temperature- and current-range for which a single event is
sufficient. It also indicates that the statistical distribution of switching
currents initially broadens, as the temperature is reduced. Only at lower
temperatures does this distribution show the narrowing with cooling naively
expected for resistive fluctuations consisting of phase slips that are
thermally activated.
| cond-mat.supr-con cond-mat.mes-hall | hysteresis in the currentvoltage characteristic in a superconducting nanowire reflects an underlying bistability as the current is ramped up repeatedly the state switches from a superconductive to a resistive one doing so at random current values below the equilibrium critical current can a single phaseslip event somewhere along the wireduring which the orderparameter fluctuates to zeroinduce such switching via the local heating it causes we address this and related issues by constructing a stochastic model for the timeevolution of the temperature in a nanowire whose ends are maintained at a fixed temperature the model indicates that although in general several phaseslip events are necessary to induce switching there is indeed a temperature and currentrange for which a single event is sufficient it also indicates that the statistical distribution of switching currents initially broadens as the temperature is reduced only at lower temperatures does this distribution show the narrowing with cooling naively expected for resistive fluctuations consisting of phase slips that are thermally activated | [['hysteresis', 'in', 'the', 'currentvoltage', 'characteristic', 'in', 'a', 'superconducting', 'nanowire', 'reflects', 'an', 'underlying', 'bistability', 'as', 'the', 'current', 'is', 'ramped', 'up', 'repeatedly', 'the', 'state', 'switches', 'from', 'a', 'superconductive', 'to', 'a', 'resistive', 'one', 'doing', 'so', 'at', 'random', 'current', 'values', 'below', 'the', 'equilibrium', 'critical', 'current', 'can', 'a', 'single', 'phaseslip', 'event', 'somewhere', 'along', 'the', 'wireduring', 'which', 'the', 'orderparameter', 'fluctuates', 'to', 'zeroinduce', 'such', 'switching', 'via', 'the', 'local', 'heating', 'it', 'causes', 'we', 'address', 'this', 'and', 'related', 'issues', 'by', 'constructing', 'a', 'stochastic', 'model', 'for', 'the', 'timeevolution', 'of', 'the', 'temperature', 'in', 'a', 'nanowire', 'whose', 'ends', 'are', 'maintained', 'at', 'a', 'fixed', 'temperature', 'the', 'model', 'indicates', 'that', 'although', 'in', 'general', 'several', 'phaseslip', 'events', 'are', 'necessary', 'to', 'induce', 'switching', 'there', 'is', 'indeed', 'a', 'temperature', 'and', 'currentrange', 'for', 'which', 'a', 'single', 'event', 'is', 'sufficient', 'it', 'also', 'indicates', 'that', 'the', 'statistical', 'distribution', 'of', 'switching', 'currents', 'initially', 'broadens', 'as', 'the', 'temperature', 'is', 'reduced', 'only', 'at', 'lower', 'temperatures', 'does', 'this', 'distribution', 'show', 'the', 'narrowing', 'with', 'cooling', 'naively', 'expected', 'for', 'resistive', 'fluctuations', 'consisting', 'of', 'phase', 'slips', 'that', 'are', 'thermally', 'activated']] | [-0.16388954729191027, 0.2495846797516606, -0.05731278803577879, 0.04301430890336633, -0.016769585151632783, -0.14302157759957482, 0.0877712383364269, 0.35969086738768963, -0.2740815613331506, -0.271446511328395, 0.074291439098306, -0.2730512012843974, -0.08654261675546877, 0.21136631182744167, -0.02268458639155142, -0.0016289447586132154, -0.02465469564194791, 0.06007271202142874, -0.08539016292561427, -0.17226923481503037, 0.2746373855159618, 0.04460352667083498, 0.33322280360152945, 0.053139259514864534, 0.09601518937561196, -0.06541948498343117, 0.08817232157889521, 0.055685930430627195, -0.10709302103564369, -0.01806303449848201, 0.24546428112662397, 0.0024931225168984385, 0.25091115418472326, -0.4391834405774716, -0.22158753959229216, 0.10538534889847143, 0.14104809946420574, 0.15686217077272885, -0.034143172791664254, -0.2159250261815032, 0.08506758306757548, -0.12370961341239309, -0.1242079168529017, -0.02833247630042024, 0.017278481589164583, 0.017124083920498377, -0.26602687058184527, 0.07358748421374912, 0.08620771229179809, 0.04261096846748842, -0.021061865689989644, -0.055807691413065186, -0.0714629948779475, 0.07334407777234446, 0.01701199006784009, 0.05573506320361048, 0.2142152920132503, -0.1222272684884956, -0.10038162678247317, 0.2756259329908062, -0.05288311452022754, -0.10871760923328111, 0.15403549542679684, -0.15651735567080322, -0.08363505793386139, 0.19935608149389736, 0.09511759790111682, 0.07525916598197, -0.1635457807831699, 0.023475144468102373, 0.027578983102284838, 0.15556145086302423, 0.052155297383433205, 0.012545732490616501, 0.2839637940865941, 0.22605474227602826, 0.08480632734426763, 0.15400196098780725, -0.10388547992915846, -0.12258111187111354, -0.33138126401172485, -0.11842508228146471, -0.1796519052470103, 0.0854445381671212, -0.0613231372588416, -0.21255014162452426, 0.4130520584585611, 0.18445063483377452, 0.23673749910667538, 0.013407587846450042, 0.300792460097, 0.17643397981701128, 0.08296516788686858, 0.10033535593975103, 0.23910059782792814, 0.12186866657430073, 0.1393318862246815, -0.26804258650372503, 0.1321363569702953, -0.028553706844104455] |
709.3972 | $^{64}$Ni+$^{64}$Ni fusion reaction calculated with the
density-constrained time-dependent Hartree-Fock formalism | We study fusion reactions of the $^{64}$Ni+$^{64}$Ni system using the
density-constrained time-dependent Hartree-Fock (TDHF) formalism. In this
formalism the fusion barriers are directly obtained from TDHF dynamics. In
addition, we incorporate the entrance channel alignments of the slightly
deformed (oblate) $^{64}$Ni nuclei due to dynamical Coulomb excitation. We show
that alignment leads to a fusion barrier distribution and alters the naive
picture for defining which energies are actually sub-barrier. We also show that
core polarization effects could play a significant role in fusion cross section
calculations.
| nucl-th | we study fusion reactions of the 64ni64ni system using the densityconstrained timedependent hartreefock tdhf formalism in this formalism the fusion barriers are directly obtained from tdhf dynamics in addition we incorporate the entrance channel alignments of the slightly deformed oblate 64ni nuclei due to dynamical coulomb excitation we show that alignment leads to a fusion barrier distribution and alters the naive picture for defining which energies are actually subbarrier we also show that core polarization effects could play a significant role in fusion cross section calculations | [['we', 'study', 'fusion', 'reactions', 'of', 'the', '64ni64ni', 'system', 'using', 'the', 'densityconstrained', 'timedependent', 'hartreefock', 'tdhf', 'formalism', 'in', 'this', 'formalism', 'the', 'fusion', 'barriers', 'are', 'directly', 'obtained', 'from', 'tdhf', 'dynamics', 'in', 'addition', 'we', 'incorporate', 'the', 'entrance', 'channel', 'alignments', 'of', 'the', 'slightly', 'deformed', 'oblate', '64ni', 'nuclei', 'due', 'to', 'dynamical', 'coulomb', 'excitation', 'we', 'show', 'that', 'alignment', 'leads', 'to', 'a', 'fusion', 'barrier', 'distribution', 'and', 'alters', 'the', 'naive', 'picture', 'for', 'defining', 'which', 'energies', 'are', 'actually', 'subbarrier', 'we', 'also', 'show', 'that', 'core', 'polarization', 'effects', 'could', 'play', 'a', 'significant', 'role', 'in', 'fusion', 'cross', 'section', 'calculations']] | [-0.06159942570348205, 0.14315044529855164, -0.14439128814698304, 0.1483898547215409, 0.027961530890532358, -0.09577749566267092, 0.023085063579221538, 0.4101495738899292, -0.25433766559242854, -0.247153420510247, -0.10425444294259949, -0.26171697164495844, -0.1137067775220372, 0.11732969020133253, 0.023587314596096445, 0.006507635614726432, 0.14201564371970288, 0.010058883428681902, -0.07661175055884172, -0.14920081666584106, 0.3481690772283866, 0.13903467770839154, 0.2894747265029785, 0.13975423450587143, 0.006001141561238572, 0.09826210674255827, 0.02673575340575257, -0.010249034030536232, -0.12184999428427545, 0.1045576698948131, 0.26257037246588966, 0.01895812914035348, 0.18395118428350882, -0.46484570993587027, -0.20263508541054678, 0.06111665156691573, 0.18035980500280857, 0.23685329567592286, -0.11051391692139036, -0.2722317468548237, 0.029629579274157106, -0.28488975859160515, -0.124414564283608, -0.10767300005698967, 0.014647677313363137, 0.026954685436659166, -0.29108034237829405, 0.10195034357609477, 0.029926162731202948, 0.0037315063587854192, -0.1429546088099393, -0.17563917219698386, -0.06144050257497056, 0.057271801872005645, 0.016294730916554326, 0.011681854294418075, 0.2557994682818305, -0.11704082716172452, -0.0739551134201763, 0.39162049024517454, -0.0027825518221551077, -0.16899989413227454, 0.12196353177044562, -0.15218696032845697, -0.11755683782867828, 0.1743363396177978, 0.1864634615823973, 0.1304309917045324, -0.16250157542526722, 0.06974823813991037, 0.03677970877047195, 0.11205035852549901, 0.0922104978695685, 0.0013963757624286552, 0.163357363226634, 0.17722049542854346, -0.03938550665584761, 0.08168804394297821, -0.16086307176670364, -0.21204655622890176, -0.323242811875981, -0.06940083083269243, -0.05481782093167652, 0.048800589869050635, 0.00951658528271743, -0.10016221404996116, 0.32452130736816986, 0.15439112657724424, 0.2011816898025139, -0.006912521691722145, 0.27497117351307426, 0.14636514280370416, 0.0991483872037565, 0.00798481984908671, 0.30969193543112555, 0.18671833774681354, 0.0600669429485881, -0.27560870700548296, 0.04093287797471465, 0.05694866220488451] |
709.3973 | Spiral structure in the outer Galactic disk. I. The Third Galactic
Quadrant | We combine optical and radio observations to trace the spiral structure in
the Third Quadrant of the Milky Way. The optical observations consist of a
large sample of young open clusters and associations, whereas the radio
observations consist of a survey of nearby and distant clouds observed in CO.
Both the optical and radio samples are the largest ones insofar present in the
literature. We use this unique material to analyze the behavior of interstellar
extinction and to trace the detailed structure of the Third Galactic Quadrant
(TGQ).We find that the Outer (Cygnus) grand design spiral arm is traced by
stellar and CO components while the Perseus arm is traced solely by CO and is
possibly being disrupted by the crossing of the Local (Orion) arm. The Local
arm is traced by CO and young stars toward l = 240 degrees and extends for over
8 kpc along the line of sight reaching the Outer arm. Finally, we characterize
the Galactic warp and compare the geometries implied by the young stellar and
CO components.
| astro-ph | we combine optical and radio observations to trace the spiral structure in the third quadrant of the milky way the optical observations consist of a large sample of young open clusters and associations whereas the radio observations consist of a survey of nearby and distant clouds observed in co both the optical and radio samples are the largest ones insofar present in the literature we use this unique material to analyze the behavior of interstellar extinction and to trace the detailed structure of the third galactic quadrant tgqwe find that the outer cygnus grand design spiral arm is traced by stellar and co components while the perseus arm is traced solely by co and is possibly being disrupted by the crossing of the local orion arm the local arm is traced by co and young stars toward l 240 degrees and extends for over 8 kpc along the line of sight reaching the outer arm finally we characterize the galactic warp and compare the geometries implied by the young stellar and co components | [['we', 'combine', 'optical', 'and', 'radio', 'observations', 'to', 'trace', 'the', 'spiral', 'structure', 'in', 'the', 'third', 'quadrant', 'of', 'the', 'milky', 'way', 'the', 'optical', 'observations', 'consist', 'of', 'a', 'large', 'sample', 'of', 'young', 'open', 'clusters', 'and', 'associations', 'whereas', 'the', 'radio', 'observations', 'consist', 'of', 'a', 'survey', 'of', 'nearby', 'and', 'distant', 'clouds', 'observed', 'in', 'co', 'both', 'the', 'optical', 'and', 'radio', 'samples', 'are', 'the', 'largest', 'ones', 'insofar', 'present', 'in', 'the', 'literature', 'we', 'use', 'this', 'unique', 'material', 'to', 'analyze', 'the', 'behavior', 'of', 'interstellar', 'extinction', 'and', 'to', 'trace', 'the', 'detailed', 'structure', 'of', 'the', 'third', 'galactic', 'quadrant', 'tgqwe', 'find', 'that', 'the', 'outer', 'cygnus', 'grand', 'design', 'spiral', 'arm', 'is', 'traced', 'by', 'stellar', 'and', 'co', 'components', 'while', 'the', 'perseus', 'arm', 'is', 'traced', 'solely', 'by', 'co', 'and', 'is', 'possibly', 'being', 'disrupted', 'by', 'the', 'crossing', 'of', 'the', 'local', 'orion', 'arm', 'the', 'local', 'arm', 'is', 'traced', 'by', 'co', 'and', 'young', 'stars', 'toward', 'l', '240', 'degrees', 'and', 'extends', 'for', 'over', '8', 'kpc', 'along', 'the', 'line', 'of', 'sight', 'reaching', 'the', 'outer', 'arm', 'finally', 'we', 'characterize', 'the', 'galactic', 'warp', 'and', 'compare', 'the', 'geometries', 'implied', 'by', 'the', 'young', 'stellar', 'and', 'co', 'components']] | [-0.10581465537096699, 0.033453702000727836, -0.005286750318699105, 0.03571025181364073, -0.11191010620136377, -0.019029664612093638, 0.07104346914241243, 0.4309244865665299, -0.22357660528207415, -0.328449931542584, 0.07049412096797782, -0.2669948177969863, -0.058624206297641056, 0.14649482414689521, 0.022288385487627238, -0.0789726694999635, 0.0030819594340268956, -0.11003289316228569, -0.024444741753287355, -0.22115135238625022, 0.3179407531400969, 0.06729966706899536, 0.12278377665152643, -0.080030822595798, 0.0711270895090122, -0.12218570054866114, -0.10659959157529493, -0.02057879886774043, -0.11894879196818714, 0.11232911675341352, 0.20864925460570471, 0.11471581247061231, 0.1952554066367664, -0.3878487906319162, -0.17610961280432855, 0.027539605957044418, 0.2003690371652632, 0.03030317812091346, -0.010567034529738648, -0.3186169806326371, 0.06720919351006836, -0.13156204817912726, -0.2494818670052472, 0.1032351296351746, 0.03446192254832144, 0.07251967435403521, -0.16986288586807394, 0.10392708019394059, 0.018051165047773095, 0.11801187299140513, -0.09069008210847875, -0.12172385255080583, -0.030428530956986687, 0.12415834602650774, -0.00998865777686195, 0.10086197453431872, 0.22500258834144576, -0.1360440639261871, -0.048408131689093144, 0.39842816579783724, -0.04952293395255638, -0.004844167589231632, 0.2383022855988942, -0.2371906144761069, -0.1616913338928202, 0.13113165980605626, 0.11245155650689158, 0.0925552056219732, -0.15583688503330598, 0.04142571080693986, -0.07454619388404671, 0.16467693456594812, 0.07144144921276588, 0.06106122442098811, 0.3063179001666952, 0.07104016142169035, 0.09568059213145103, 0.17045120911965103, -0.2632400073492791, -0.09913519329694641, -0.2353154367139173, -0.13130706652110918, -0.12238729458036941, 0.05141514574372491, -0.12202311393733442, -0.0821268543929977, 0.34322509145212554, 0.061957181382621095, 0.2701702679650923, 0.023382978232951056, 0.3374433317221701, 0.02452974655898288, 0.1485533512327387, 0.15268917405046523, 0.30158280706585405, 0.18085103165520744, 0.0734753739806217, -0.254008021443909, 0.11032423962362457, -0.028088861234421128] |
709.3974 | Fitness landscape of the cellular automata majority problem: View from
the Olympus | In this paper we study cellular automata (CAs) that perform the computational
Majority task. This task is a good example of what the phenomenon of emergence
in complex systems is. We take an interest in the reasons that make this
particular fitness landscape a difficult one. The first goal is to study the
landscape as such, and thus it is ideally independent from the actual
heuristics used to search the space. However, a second goal is to understand
the features a good search technique for this particular problem space should
possess. We statistically quantify in various ways the degree of difficulty of
searching this landscape. Due to neutrality, investigations based on sampling
techniques on the whole landscape are difficult to conduct. So, we go exploring
the landscape from the top. Although it has been proved that no CA can perform
the task perfectly, several efficient CAs for this task have been found.
Exploiting similarities between these CAs and symmetries in the landscape, we
define the Olympus landscape which is regarded as the ''heavenly home'' of the
best local optima known (blok). Then we measure several properties of this
subspace. Although it is easier to find relevant CAs in this subspace than in
the overall landscape, there are structural reasons that prevent a searcher
from finding overfitted CAs in the Olympus. Finally, we study dynamics and
performance of genetic algorithms on the Olympus in order to confirm our
analysis and to find efficient CAs for the Majority problem with low
computational cost.
| cs.AI | in this paper we study cellular automata cas that perform the computational majority task this task is a good example of what the phenomenon of emergence in complex systems is we take an interest in the reasons that make this particular fitness landscape a difficult one the first goal is to study the landscape as such and thus it is ideally independent from the actual heuristics used to search the space however a second goal is to understand the features a good search technique for this particular problem space should possess we statistically quantify in various ways the degree of difficulty of searching this landscape due to neutrality investigations based on sampling techniques on the whole landscape are difficult to conduct so we go exploring the landscape from the top although it has been proved that no ca can perform the task perfectly several efficient cas for this task have been found exploiting similarities between these cas and symmetries in the landscape we define the olympus landscape which is regarded as the heavenly home of the best local optima known blok then we measure several properties of this subspace although it is easier to find relevant cas in this subspace than in the overall landscape there are structural reasons that prevent a searcher from finding overfitted cas in the olympus finally we study dynamics and performance of genetic algorithms on the olympus in order to confirm our analysis and to find efficient cas for the majority problem with low computational cost | [['in', 'this', 'paper', 'we', 'study', 'cellular', 'automata', 'cas', 'that', 'perform', 'the', 'computational', 'majority', 'task', 'this', 'task', 'is', 'a', 'good', 'example', 'of', 'what', 'the', 'phenomenon', 'of', 'emergence', 'in', 'complex', 'systems', 'is', 'we', 'take', 'an', 'interest', 'in', 'the', 'reasons', 'that', 'make', 'this', 'particular', 'fitness', 'landscape', 'a', 'difficult', 'one', 'the', 'first', 'goal', 'is', 'to', 'study', 'the', 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709.3975 | Observations of Pulsar Wind Nebulae with the VERITAS Array of Imaging
Atmospheric Cherenkov Telescopes | Many of the recently discovered galactic very high-energy (VHE) gamma-ray
sources are associated with Pulsar Wind Nebulae, which is the most populous
Galactic source category at TeV energies. The extended synchrotron nebulae of
these objects observed in the X-ray band are a hallmark of the relativistic
winds, generated by the young, energetic neutron stars, that interact with the
matter ejected by the supernova explosion and the surrounding interstellar gas.
Relativistic electrons, or protons, accelerated in the pulsar winds, or at
their shock boundaries, interact with the magnetic field and low energy seed
photons to produce the observed VHE gamma-ray emission. The VERITAS array of
four imaging atmospheric Cherenkov telescopes was designed to study
astrophysical sources of gamma rays in the energy domain from about 100 GeV up
to several tens of TeV. The sensitivity of the VERITAS array allows detailed
studies of the morphology and spectral features of gamma-ray emission from
PWNe. Three northern sky PWNe, G75.2+0.1, G106.6+2.9, and 3C58, were observed
with VERITAS during 2006. No evidence for TeV gamma-ray emission at the
position of the pu lsar associated with these PWNe is demonstrated.
| astro-ph | many of the recently discovered galactic very highenergy vhe gammaray sources are associated with pulsar wind nebulae which is the most populous galactic source category at tev energies the extended synchrotron nebulae of these objects observed in the xray band are a hallmark of the relativistic winds generated by the young energetic neutron stars that interact with the matter ejected by the supernova explosion and the surrounding interstellar gas relativistic electrons or protons accelerated in the pulsar winds or at their shock boundaries interact with the magnetic field and low energy seed photons to produce the observed vhe gammaray emission the veritas array of four imaging atmospheric cherenkov telescopes was designed to study astrophysical sources of gamma rays in the energy domain from about 100 gev up to several tens of tev the sensitivity of the veritas array allows detailed studies of the morphology and spectral features of gammaray emission from pwne three northern sky pwne g75201 g106629 and 3c58 were observed with veritas during 2006 no evidence for tev gammaray emission at the position of the pu lsar associated with these pwne is demonstrated | [['many', 'of', 'the', 'recently', 'discovered', 'galactic', 'very', 'highenergy', 'vhe', 'gammaray', 'sources', 'are', 'associated', 'with', 'pulsar', 'wind', 'nebulae', 'which', 'is', 'the', 'most', 'populous', 'galactic', 'source', 'category', 'at', 'tev', 'energies', 'the', 'extended', 'synchrotron', 'nebulae', 'of', 'these', 'objects', 'observed', 'in', 'the', 'xray', 'band', 'are', 'a', 'hallmark', 'of', 'the', 'relativistic', 'winds', 'generated', 'by', 'the', 'young', 'energetic', 'neutron', 'stars', 'that', 'interact', 'with', 'the', 'matter', 'ejected', 'by', 'the', 'supernova', 'explosion', 'and', 'the', 'surrounding', 'interstellar', 'gas', 'relativistic', 'electrons', 'or', 'protons', 'accelerated', 'in', 'the', 'pulsar', 'winds', 'or', 'at', 'their', 'shock', 'boundaries', 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709.3976 | Dynamic Behaviour of the first instrumented building in France: The
Grenoble Town Hall | The French Accelerometric Network (RAP) launched in November 2004 a marked
operation for the seismic behaviour assessment of a typical French building.
The main goal of this project is to collect accelerometric data in the building
and use them to calibrate models or alternative tools used for the seismic
behaviour assessment. The final goal of this project is to help the
vulnerability assessment of cities in moderate seismic hazard countries. The
French Accelerometric Network (RAP) chose to install a permanent network of 6
accelerometers recording continuously the vibrations of the Grenoble City Hall
at the basement and at the top. The 13-story building is a RC shear walls
building, typical of the RC structures designed at the end of the 60's in
France. All the data collected in the building are available on the online
access database of the RAP. In addition to the permanent network, an ambient
vibration experiment has been performed in 36 points of the whole building.
Using the Frequency Domain Decomposition method, these data allowed estimating
precisely the different modes of vibration of the structure for low amplitudes.
Only the first bending modes in each direction (1.15 and 1.22 Hz) and the first
torsion mode (1.44 Hz) are excited. We compared the frequencies obtained using
ambient vibration to those for a moderate earthquake recorded by the permanent
network. Thanks to the continuous recording, a statistical approach of the
torsion mode pointed out the position of the centre of rotation of the
building. A modal model extracted from ambient vibrations is proposed and
validated thanks to the earthquake recordings collected in the building during
the ML=4.6, September 8th 2005 Vallorcine (Haute-Savoie, France) earthquake.
| physics.geo-ph | the french accelerometric network rap launched in november 2004 a marked operation for the seismic behaviour assessment of a typical french building the main goal of this project is to collect accelerometric data in the building and use them to calibrate models or alternative tools used for the seismic behaviour assessment the final goal of this project is to help the vulnerability assessment of cities in moderate seismic hazard countries the french accelerometric network rap chose to install a permanent network of 6 accelerometers recording continuously the vibrations of the grenoble city hall at the basement and at the top the 13story building is a rc shear walls building typical of the rc structures designed at the end of the 60s in france all the data collected in the building are available on the online access database of the rap in addition to the permanent network an ambient vibration experiment has been performed in 36 points of the whole building using the frequency domain decomposition method these data allowed estimating precisely the different modes of vibration of the structure for low amplitudes only the first bending modes in each direction 115 and 122 hz and the first torsion mode 144 hz are excited we compared the frequencies obtained using ambient vibration to those for a moderate earthquake recorded by the permanent network thanks to the continuous recording a statistical approach of the torsion mode pointed out the position of the centre of rotation of the building a modal model extracted from ambient vibrations is proposed and validated thanks to the earthquake recordings collected in the building during the ml46 september 8th 2005 vallorcine hautesavoie france earthquake | [['the', 'french', 'accelerometric', 'network', 'rap', 'launched', 'in', 'november', '2004', 'a', 'marked', 'operation', 'for', 'the', 'seismic', 'behaviour', 'assessment', 'of', 'a', 'typical', 'french', 'building', 'the', 'main', 'goal', 'of', 'this', 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709.3977 | Laser Atmospheric Studies with VERITAS | As a calibrated laser pulse propagates through the atmosphere, the amount of
Rayleigh-scattered light arriving at the VERITAS telescopes can be calculated
precisely. This technique was originally developed for the absolute calibration
of ultra-high-energy cosmic-ray fluorescence telescopes but is also applicable
to imaging atmospheric Cherenkov telescopes (IACTs). In this paper, we present
two nights of laser data taken with the laser at various distances away from
the VERITAS telescopes and compare it to Rayleigh scattering simulations.
| astro-ph | as a calibrated laser pulse propagates through the atmosphere the amount of rayleighscattered light arriving at the veritas telescopes can be calculated precisely this technique was originally developed for the absolute calibration of ultrahighenergy cosmicray fluorescence telescopes but is also applicable to imaging atmospheric cherenkov telescopes iacts in this paper we present two nights of laser data taken with the laser at various distances away from the veritas telescopes and compare it to rayleigh scattering simulations | [['as', 'a', 'calibrated', 'laser', 'pulse', 'propagates', 'through', 'the', 'atmosphere', 'the', 'amount', 'of', 'rayleighscattered', 'light', 'arriving', 'at', 'the', 'veritas', 'telescopes', 'can', 'be', 'calculated', 'precisely', 'this', 'technique', 'was', 'originally', 'developed', 'for', 'the', 'absolute', 'calibration', 'of', 'ultrahighenergy', 'cosmicray', 'fluorescence', 'telescopes', 'but', 'is', 'also', 'applicable', 'to', 'imaging', 'atmospheric', 'cherenkov', 'telescopes', 'iacts', 'in', 'this', 'paper', 'we', 'present', 'two', 'nights', 'of', 'laser', 'data', 'taken', 'with', 'the', 'laser', 'at', 'various', 'distances', 'away', 'from', 'the', 'veritas', 'telescopes', 'and', 'compare', 'it', 'to', 'rayleigh', 'scattering', 'simulations']] | [-0.04556844108064022, 0.2783383375070499, -0.09295497851225694, 0.11923455127582297, -0.04958913561054751, -0.11471772956735406, -0.01272797316318917, 0.47662143311218214, -0.222593525792227, -0.40619338732702953, 0.08143748927058798, -0.33840420871887256, -0.028909910298687846, 0.29920517425297904, -0.018130062613636255, 0.033666384203043936, 0.19923913352938957, -0.13030687249020526, 0.020544469083879927, -0.22282743659850798, 0.21396390801467197, 0.2121339987313963, 0.2146447637872035, 0.030301727532213062, 0.14709394769038467, -0.01160717022139579, -0.07274944259245929, -0.05824729139720531, -0.09391222958526525, 0.057387171000683385, 0.286489868610117, 0.1307244443236605, 0.13161550943837746, -0.4037153000061057, -0.26916751038822295, 0.0948501275117068, 0.13525905816411404, 0.026193649364071654, -0.01657027013080599, -0.3346304120005746, -0.04954162940971161, -0.14518986947491372, -0.1915792303809308, 0.09493390343911749, -0.057768846846700306, 0.06884140130377521, -0.240017926590027, -0.08697475552119278, -0.10167077603124965, 0.11880160416139436, -0.07360026257198402, -0.12177772286323536, 0.014073815287127601, 0.10130564286526733, 0.04923744559422821, 0.017748837783552806, 0.11843529336252495, -0.08642226774368043, -0.02255205886046353, 0.3615992521916173, -0.09746336765391261, -0.01834229838813802, 0.1489927497888474, -0.19695142674946078, -0.11788860454199541, 0.23366267441796432, 0.1846950201617897, 0.1264619906187842, -0.21477906257649393, 0.026112940976561635, -0.011851258675482026, 0.19247035964049006, 0.14697495711918332, 0.02632588147504353, 0.21339234525926018, 0.20161020052374193, 0.12366220637494207, 0.122942704889666, -0.3253053715697637, 0.06210827153470171, -0.2635108075521298, -0.10135029460989724, -0.20402655879182643, 0.09489438678811941, -0.011138069584137012, -0.07232780951830807, 0.38326588635774034, 0.19508942436598437, 0.053093413736573176, 0.011517844579525684, 0.40715828410496835, 0.06467310307810917, 0.07801456758629922, -0.012756651500239968, 0.3602434129111077, 0.11450878679017096, 0.1672021937617836, -0.1953144754025791, 0.024599911062978208, 0.0036388554022108253] |
709.3978 | A very compact polarizer for an X-ray polarimeter calibration | We devised and built a light, compact and transportable X-ray polarized
source based on the Bragg diffraction at nearly 45 degrees. The source is
composed by a crystal coupled to a small power X-ray tube. The angles of
incidence are selected by means of two orthogonal capillary plates which, due
to the small diameter holes (10 um) allow good collimation with limited sizes.
All the orders of diffraction defined by the crystal lattice spacing are
polarized up to the maximum order limited by the X-ray tube voltage. Selecting
suitably the crystal and the X-ray tube, either the line or the continuum
emission can be diffracted, producing polarized photons at different energies.
A very high degree of polarization and reasonable fluxes can be reached with a
suitable choice of the capillary plates collimation.
We present the source and test its performances with the production of nearly
completely polarized radiation at 2.6, 5.2, 3.7 and 7.4 keV thanks to the
employment of graphite and aluminum crystals, with copper and calcium X-ray
tubes respectively. Triggered by the very compact design of the source, we also
present a feasibility study for an on-board polarized source, coupled to a
radioactive Fe55 nuclide and a PVC thin film, for the calibration of the next
generation space-borne X-ray polarimeters at 2.6 and 5.9 keV.
| astro-ph | we devised and built a light compact and transportable xray polarized source based on the bragg diffraction at nearly 45 degrees the source is composed by a crystal coupled to a small power xray tube the angles of incidence are selected by means of two orthogonal capillary plates which due to the small diameter holes 10 um allow good collimation with limited sizes all the orders of diffraction defined by the crystal lattice spacing are polarized up to the maximum order limited by the xray tube voltage selecting suitably the crystal and the xray tube either the line or the continuum emission can be diffracted producing polarized photons at different energies a very high degree of polarization and reasonable fluxes can be reached with a suitable choice of the capillary plates collimation we present the source and test its performances with the production of nearly completely polarized radiation at 26 52 37 and 74 kev thanks to the employment of graphite and aluminum crystals with copper and calcium xray tubes respectively triggered by the very compact design of the source we also present a feasibility study for an onboard polarized source coupled to a radioactive fe55 nuclide and a pvc thin film for the calibration of the next generation spaceborne xray polarimeters at 26 and 59 kev | [['we', 'devised', 'and', 'built', 'a', 'light', 'compact', 'and', 'transportable', 'xray', 'polarized', 'source', 'based', 'on', 'the', 'bragg', 'diffraction', 'at', 'nearly', '45', 'degrees', 'the', 'source', 'is', 'composed', 'by', 'a', 'crystal', 'coupled', 'to', 'a', 'small', 'power', 'xray', 'tube', 'the', 'angles', 'of', 'incidence', 'are', 'selected', 'by', 'means', 'of', 'two', 'orthogonal', 'capillary', 'plates', 'which', 'due', 'to', 'the', 'small', 'diameter', 'holes', '10', 'um', 'allow', 'good', 'collimation', 'with', 'limited', 'sizes', 'all', 'the', 'orders', 'of', 'diffraction', 'defined', 'by', 'the', 'crystal', 'lattice', 'spacing', 'are', 'polarized', 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709.3979 | Spectral spacing correlations of nucleus-nucleus collisions at high
energies | We propose a novel approach to the analysis of experimental data obtained in
relativistic nucleus-nucleus collisions which borrows from methods developed
within the context of Random Matrix Theory. It is applied to the detection of
correlations in momentum distributions of emitted particles. We find good
agreement between the results obtained in this way and a standard analysis
based on the two-pair correlation function often used in high energy physics.
The method introduced here is free from unwanted background contributions.
| nucl-ex | we propose a novel approach to the analysis of experimental data obtained in relativistic nucleusnucleus collisions which borrows from methods developed within the context of random matrix theory it is applied to the detection of correlations in momentum distributions of emitted particles we find good agreement between the results obtained in this way and a standard analysis based on the twopair correlation function often used in high energy physics the method introduced here is free from unwanted background contributions | [['we', 'propose', 'a', 'novel', 'approach', 'to', 'the', 'analysis', 'of', 'experimental', 'data', 'obtained', 'in', 'relativistic', 'nucleusnucleus', 'collisions', 'which', 'borrows', 'from', 'methods', 'developed', 'within', 'the', 'context', 'of', 'random', 'matrix', 'theory', 'it', 'is', 'applied', 'to', 'the', 'detection', 'of', 'correlations', 'in', 'momentum', 'distributions', 'of', 'emitted', 'particles', 'we', 'find', 'good', 'agreement', 'between', 'the', 'results', 'obtained', 'in', 'this', 'way', 'and', 'a', 'standard', 'analysis', 'based', 'on', 'the', 'twopair', 'correlation', 'function', 'often', 'used', 'in', 'high', 'energy', 'physics', 'the', 'method', 'introduced', 'here', 'is', 'free', 'from', 'unwanted', 'background', 'contributions']] | [-0.032872155880484775, 0.09700608371957382, -0.1632446702569723, 0.11046415899218578, 0.005603643157814122, -0.07978274443340075, 0.010163665718186788, 0.3442650907378219, -0.2412644253654665, -0.33671784943229033, -0.01754950914131124, -0.301882169174054, -0.12663652747869492, 0.1873619545345442, -0.018373808478700775, 0.08306817216444996, 0.08082077580303708, 0.013196610715947573, -0.07291921595983868, -0.15746590389009518, 0.2959074886350692, 0.09500450978079174, 0.33300632653946555, 0.07593601208203767, 0.10158905469594358, 0.07704455456460672, -0.07762635162076618, 0.04307695565438723, -0.12717373558331893, 0.15646936031260317, 0.2562894572362398, 0.10420030926625375, 0.23793327357454958, -0.41691111065918884, -0.21410303738534073, 0.0785635905988703, 0.12993069712214078, 0.14667911271570558, -0.11570796187336356, -0.28639773435041876, 0.04558581455693215, -0.19451392832200362, -0.09591068247262435, -0.06969480633240523, -0.04691006463681218, 0.01039937301833607, -0.29114740614225215, 0.11929959579241238, 0.0023687860627859074, 0.02949397169242177, -0.0550699799522003, -0.11539406531572907, 0.026685138456994974, 0.09811039487654462, 0.0684566795295458, 0.048564879907460154, 0.11954520684607987, -0.1100436885962027, -0.11336484309683754, 0.39701131089955943, -0.09527705840860741, -0.19886947258175175, 0.19481033038736992, -0.1421448483450126, -0.15049269071579735, 0.12915772067595133, 0.2117536079162095, 0.13360096440581262, -0.18969217301169528, 0.05214572556926928, -0.006296434062474136, 0.15843133357223832, 0.006932631750956555, 0.024887549890484514, 0.1615016832063564, 0.16141998011005831, -0.019037901683227172, 0.13561239250629104, -0.11464251413399094, -0.1089702156472574, -0.3292551092166878, -0.06939141617356977, -0.2141573695300878, -0.0070742769726799635, -0.04408082776224753, -0.12563007560711872, 0.3859338471076534, 0.22008874132651599, 0.20920911822998542, 0.0013429107206366674, 0.3221781412169007, 0.1101883764531982, 0.06041630751842374, 0.060207808189848555, 0.26548065034719776, 0.15111799152343994, 0.12617944103748172, -0.18671388726657892, 0.03337319739917411, 0.06147652234929272] |
709.398 | Theoretical Spectral Models of the Planet HD 209458b with a Thermal
Inversion and Water Emission Bands | We find that a theoretical fit to all the HD 209458b data at secondary
eclipse requires that the dayside atmosphere of HD 209458b have a thermal
inversion and a stratosphere. This inversion is caused by the capture of
optical stellar flux by an absorber of uncertain origin that resides at
altitude. One consequence of stratospheric heating and temperature inversion is
the flipping of water absorption features into emission features from the near-
to the mid-infrared and we see evidence of such a water emission feature in the
recent HD 209458b IRAC data of Knutson et al. In addition, an upper-atmosphere
optical absorber may help explain both the weaker-than-expected Na D feature
seen in transit and the fact that the transit radius at 24 $\mu$m is smaller
than the corresponding radius in the optical. Moreover, it may be a factor in
why HD 209458b's optical transit radius is as large as it is. We speculate on
the nature of this absorber and the planets whose atmospheres may, or may not,
be affected by its presence.
| astro-ph | we find that a theoretical fit to all the hd 209458b data at secondary eclipse requires that the dayside atmosphere of hd 209458b have a thermal inversion and a stratosphere this inversion is caused by the capture of optical stellar flux by an absorber of uncertain origin that resides at altitude one consequence of stratospheric heating and temperature inversion is the flipping of water absorption features into emission features from the near to the midinfrared and we see evidence of such a water emission feature in the recent hd 209458b irac data of knutson et al in addition an upperatmosphere optical absorber may help explain both the weakerthanexpected na d feature seen in transit and the fact that the transit radius at 24 mum is smaller than the corresponding radius in the optical moreover it may be a factor in why hd 209458bs optical transit radius is as large as it is we speculate on the nature of this absorber and the planets whose atmospheres may or may not be affected by its presence | [['we', 'find', 'that', 'a', 'theoretical', 'fit', 'to', 'all', 'the', 'hd', '209458b', 'data', 'at', 'secondary', 'eclipse', 'requires', 'that', 'the', 'dayside', 'atmosphere', 'of', 'hd', '209458b', 'have', 'a', 'thermal', 'inversion', 'and', 'a', 'stratosphere', 'this', 'inversion', 'is', 'caused', 'by', 'the', 'capture', 'of', 'optical', 'stellar', 'flux', 'by', 'an', 'absorber', 'of', 'uncertain', 'origin', 'that', 'resides', 'at', 'altitude', 'one', 'consequence', 'of', 'stratospheric', 'heating', 'and', 'temperature', 'inversion', 'is', 'the', 'flipping', 'of', 'water', 'absorption', 'features', 'into', 'emission', 'features', 'from', 'the', 'near', 'to', 'the', 'midinfrared', 'and', 'we', 'see', 'evidence', 'of', 'such', 'a', 'water', 'emission', 'feature', 'in', 'the', 'recent', 'hd', '209458b', 'irac', 'data', 'of', 'knutson', 'et', 'al', 'in', 'addition', 'an', 'upperatmosphere', 'optical', 'absorber', 'may', 'help', 'explain', 'both', 'the', 'weakerthanexpected', 'na', 'd', 'feature', 'seen', 'in', 'transit', 'and', 'the', 'fact', 'that', 'the', 'transit', 'radius', 'at', '24', 'mum', 'is', 'smaller', 'than', 'the', 'corresponding', 'radius', 'in', 'the', 'optical', 'moreover', 'it', 'may', 'be', 'a', 'factor', 'in', 'why', 'hd', '209458bs', 'optical', 'transit', 'radius', 'is', 'as', 'large', 'as', 'it', 'is', 'we', 'speculate', 'on', 'the', 'nature', 'of', 'this', 'absorber', 'and', 'the', 'planets', 'whose', 'atmospheres', 'may', 'or', 'may', 'not', 'be', 'affected', 'by', 'its', 'presence']] | [-0.07883716585394533, 0.11407020649111646, -0.06265756315847783, 0.02139214284360043, -0.07132108960868629, -0.11583765767611606, 0.050728238686364724, 0.40586934553060916, -0.2072361423418658, -0.32752209034010854, 0.1175440812525151, -0.297815392041482, -0.12317476985906116, 0.17032449853584988, -0.0996318301088392, -0.025210187340766257, 0.0567754224680278, -0.07199647434787944, 0.024927102231199857, -0.205552200543172, 0.24069246895223684, 0.11287998860820353, 0.12901431587632378, 0.08909887029530987, 0.005046730367143805, -0.0767462008815754, -0.03041986660019769, -0.04047577386530859, -0.11601997452812952, 0.052578135309444815, 0.21780678293010963, 0.10229311310928423, 0.16289466442109618, -0.37112926708458993, -0.28529601746489097, 0.06194573899359588, 0.15552913156106551, 0.06220655343253058, -0.010457858659267813, -0.2309896325950936, 0.03218424589389322, -0.12901927787552162, -0.15631101900883923, 0.025132252678619644, 0.0684286917215267, -0.04194886470482701, -0.2838103269076115, 0.05727950331211262, 0.0696382318257295, 0.14604255014013046, -0.12316259084810433, -0.11836340947001311, -0.12106935818265112, 0.05299382634606277, 0.00032710985918502414, 0.01692493142818526, 0.15117150676205238, -0.08412043201182619, -0.023027935251055252, 0.42501247891714805, -0.14061724321253535, -0.028706753185029663, 0.2185923439595913, -0.18358586029542578, -0.11038351094759355, 0.2236370946996646, 0.13597314919996467, 0.0899111354976591, -0.12811784223637226, -0.005770788308989386, -0.08639642864403804, 0.22509422759805414, 0.08218155579097741, 0.0757973762134876, 0.35112424361562583, 0.12467009281454274, 0.05310839168172911, 0.0762666160916382, -0.26109889284788357, -0.009161811927939103, -0.20262573283526378, -0.1405835963134261, -0.16483964405838142, 0.05438561747370441, -0.08529487824277088, -0.11770151715474661, 0.3446136056795458, 0.16360387280637215, 0.22027388197602704, -0.021951698552752506, 0.34550279987480687, 0.13283225061571108, 0.10221117170732145, 0.13184010037194097, 0.3231394916740542, 0.11234284860029482, 0.13675619814157314, -0.2762822531815753, 0.12359781536701636, -0.0006842136226938983] |
709.3981 | Nuclear break-up of 11Be | The break-up of 11Be was studied at 41AMeV using a secondary beam of 11Be
from the GANIL facility on a 48Ti target by measuring correlations between the
10Be core, the emitted neutrons and gamma rays. The nuclear break-up leading to
the emission of a neutron at large angle in the laboratory frame is identified
with the towing mode through its characteristic n-fragment correlation. The
experimental spectra are compared with a model where the time dependent
Schrodinger equation (TDSE) is solved for the neutron initially in the 11 Be. A
good agreement is found between experiment and theory for the shapes of neutron
experimental energies and angular distributions. The spectroscopic factor of
the 2s orbital is tentatively extracted to be 0.46+-0.15. The neutron emission
from the 1p and 1d orbitals is also studied.
| nucl-ex nucl-th | the breakup of 11be was studied at 41amev using a secondary beam of 11be from the ganil facility on a 48ti target by measuring correlations between the 10be core the emitted neutrons and gamma rays the nuclear breakup leading to the emission of a neutron at large angle in the laboratory frame is identified with the towing mode through its characteristic nfragment correlation the experimental spectra are compared with a model where the time dependent schrodinger equation tdse is solved for the neutron initially in the 11 be a good agreement is found between experiment and theory for the shapes of neutron experimental energies and angular distributions the spectroscopic factor of the 2s orbital is tentatively extracted to be 046015 the neutron emission from the 1p and 1d orbitals is also studied | [['the', 'breakup', 'of', '11be', 'was', 'studied', 'at', '41amev', 'using', 'a', 'secondary', 'beam', 'of', '11be', 'from', 'the', 'ganil', 'facility', 'on', 'a', '48ti', 'target', 'by', 'measuring', 'correlations', 'between', 'the', '10be', 'core', 'the', 'emitted', 'neutrons', 'and', 'gamma', 'rays', 'the', 'nuclear', 'breakup', 'leading', 'to', 'the', 'emission', 'of', 'a', 'neutron', 'at', 'large', 'angle', 'in', 'the', 'laboratory', 'frame', 'is', 'identified', 'with', 'the', 'towing', 'mode', 'through', 'its', 'characteristic', 'nfragment', 'correlation', 'the', 'experimental', 'spectra', 'are', 'compared', 'with', 'a', 'model', 'where', 'the', 'time', 'dependent', 'schrodinger', 'equation', 'tdse', 'is', 'solved', 'for', 'the', 'neutron', 'initially', 'in', 'the', '11', 'be', 'a', 'good', 'agreement', 'is', 'found', 'between', 'experiment', 'and', 'theory', 'for', 'the', 'shapes', 'of', 'neutron', 'experimental', 'energies', 'and', 'angular', 'distributions', 'the', 'spectroscopic', 'factor', 'of', 'the', '2s', 'orbital', 'is', 'tentatively', 'extracted', 'to', 'be', '046015', 'the', 'neutron', 'emission', 'from', 'the', '1p', 'and', '1d', 'orbitals', 'is', 'also', 'studied']] | [-0.0477462493554624, 0.18318672508160158, -0.1216073008917467, 0.10786621963091794, 0.02264804674254716, -0.09809675973356348, 0.014673616537687102, 0.3689066367007272, -0.2284664547164715, -0.3106864395645238, -0.012835703384087876, -0.35827038037164727, 0.02980036159991756, 0.19345155765316918, 0.10184321643300932, 0.059253194077434956, 0.09550042767366466, 0.04154709291909713, -0.07716365837918003, -0.12349581817713703, 0.31658372393802037, 0.14661138010926025, 0.22187448312643945, 0.06179813426637719, 0.06427439908287669, -0.005960695693709765, -0.00233438890427351, -0.04512704280746538, -0.1097867966398539, 0.0675944582840731, 0.25188415286910915, 0.07071584177044646, 0.15039321821717214, -0.4104259796801579, -0.1723777390445687, 0.05000962199491644, 0.12354524804336965, 0.09655727468550118, -0.05063840671344985, -0.30721162192436846, 0.02661247078018884, -0.1874084997680327, -0.15271687658879068, 0.006412118898935674, 0.05811091852482668, 0.08077081305501882, -0.2609642236962799, 0.09071739852340899, -0.03574487530308696, 0.04725224176753861, -0.14713863880904174, -0.15440652862754325, -0.0254751692793166, 0.06990515102421171, 0.06006332311883944, 0.0950514445182427, 0.13729620001517062, -0.08863009202705566, -0.07636406360683212, 0.4045583976472389, -0.026911580771778153, -0.12359399619230697, 0.12302224697949465, -0.22695854764301762, -0.08908891737598261, 0.20426619072379762, 0.12137033802984182, 0.14730949583598738, -0.13574823318771267, 0.022831421540400316, -0.03895087204440389, 0.20720330384819832, 0.1153549584921074, -0.006606156732528308, 0.20416199561757173, 0.19560888949456776, -0.04560941976834406, 0.10907189188301275, -0.22415831112375034, -0.06255546980176496, -0.2873122914001172, -0.08946447450552107, -0.17832428409042045, 0.030155979832381646, -0.018225939106466898, -0.05928685746422803, 0.3684308941497706, -0.0012198380436459484, 0.19490906210659548, -0.03160032357609029, 0.2787147412553083, 0.1270984996384544, 0.046712646870909966, 0.036945177917188224, 0.312614137443981, 0.19412731951961743, 0.10295311941281539, -0.3197646952241428, 0.07236789520324548, -0.001974186908756924] |
709.3982 | Anomalous transport in disordered exclusion processes with coupled
particles | We consider one-dimensional asymmetric exclusion processes with a simple
attractive interaction, where the distance between consecutive particles is not
allowed to exceed a certain limit and investigate the consequences of this
coupling on the transport properties in the presence of random-force type
disorder by means of a phenomenological random trap picture. In the
phase-separated steady state of the model defined on a finite ring, the
properties of the density profile are studied and the exponent governing the
decay of the current with the system size in the biased phase is derived. In
case all consecutive particles are coupled with each other and form a closed
string, the current is found to be enhanced compared to the model without
coupling, while if groups of consecutive particles form finite strings, the
current is reduced. The motion of a semi-infinite string entering an initially
empty lattice is also studied. Here, the diffusion of the head of the string is
found to be anomalous, and two phases can be distinguished, which are
characterised by different functional dependences of the diffusion exponent on
the bias. The obtained results are checked by numerical simulation.
| cond-mat.dis-nn cond-mat.stat-mech | we consider onedimensional asymmetric exclusion processes with a simple attractive interaction where the distance between consecutive particles is not allowed to exceed a certain limit and investigate the consequences of this coupling on the transport properties in the presence of randomforce type disorder by means of a phenomenological random trap picture in the phaseseparated steady state of the model defined on a finite ring the properties of the density profile are studied and the exponent governing the decay of the current with the system size in the biased phase is derived in case all consecutive particles are coupled with each other and form a closed string the current is found to be enhanced compared to the model without coupling while if groups of consecutive particles form finite strings the current is reduced the motion of a semiinfinite string entering an initially empty lattice is also studied here the diffusion of the head of the string is found to be anomalous and two phases can be distinguished which are characterised by different functional dependences of the diffusion exponent on the bias the obtained results are checked by numerical simulation | [['we', 'consider', 'onedimensional', 'asymmetric', 'exclusion', 'processes', 'with', 'a', 'simple', 'attractive', 'interaction', 'where', 'the', 'distance', 'between', 'consecutive', 'particles', 'is', 'not', 'allowed', 'to', 'exceed', 'a', 'certain', 'limit', 'and', 'investigate', 'the', 'consequences', 'of', 'this', 'coupling', 'on', 'the', 'transport', 'properties', 'in', 'the', 'presence', 'of', 'randomforce', 'type', 'disorder', 'by', 'means', 'of', 'a', 'phenomenological', 'random', 'trap', 'picture', 'in', 'the', 'phaseseparated', 'steady', 'state', 'of', 'the', 'model', 'defined', 'on', 'a', 'finite', 'ring', 'the', 'properties', 'of', 'the', 'density', 'profile', 'are', 'studied', 'and', 'the', 'exponent', 'governing', 'the', 'decay', 'of', 'the', 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709.3983 | Inflation and Unification | Two distinct classes of realistic inflationary models consistent with present
observations are reviewed. The first example relies on the Coleman-Weinberg
potential and is readily realized within the framework of spontaneously broken
global symmetries (for instance, global U(1)_B-L). Depending on the parameters
either new or large field inflation is possible. The second example exploits
supersymmetry which makes implementation of inflation within local gauge
theories much more accessible. An example based on spontaneously broken local
U(1)_B-L is discussed. Leptogenesis is naturally realized in both cases.
| hep-ph | two distinct classes of realistic inflationary models consistent with present observations are reviewed the first example relies on the colemanweinberg potential and is readily realized within the framework of spontaneously broken global symmetries for instance global u1_bl depending on the parameters either new or large field inflation is possible the second example exploits supersymmetry which makes implementation of inflation within local gauge theories much more accessible an example based on spontaneously broken local u1_bl is discussed leptogenesis is naturally realized in both cases | [['two', 'distinct', 'classes', 'of', 'realistic', 'inflationary', 'models', 'consistent', 'with', 'present', 'observations', 'are', 'reviewed', 'the', 'first', 'example', 'relies', 'on', 'the', 'colemanweinberg', 'potential', 'and', 'is', 'readily', 'realized', 'within', 'the', 'framework', 'of', 'spontaneously', 'broken', 'global', 'symmetries', 'for', 'instance', 'global', 'u1_bl', 'depending', 'on', 'the', 'parameters', 'either', 'new', 'or', 'large', 'field', 'inflation', 'is', 'possible', 'the', 'second', 'example', 'exploits', 'supersymmetry', 'which', 'makes', 'implementation', 'of', 'inflation', 'within', 'local', 'gauge', 'theories', 'much', 'more', 'accessible', 'an', 'example', 'based', 'on', 'spontaneously', 'broken', 'local', 'u1_bl', 'is', 'discussed', 'leptogenesis', 'is', 'naturally', 'realized', 'in', 'both', 'cases']] | [-0.15301723521993865, 0.20465294803168024, -0.03685621472905917, 0.15732160592676106, -0.12052583142396915, -0.22453822393015208, -0.051085510007835115, 0.351788561053417, -0.2127900091336524, -0.29181713738102827, 0.14012525153082672, -0.16229933597349439, -0.1299971255855298, 0.14894855848838945, -0.02754215577460197, -0.007453393639929323, -0.05542656701866044, 0.018464418734053533, -0.05711005722433441, -0.25144923313419865, 0.2957284647343029, 0.039360648806554724, 0.28773313581225385, 0.0015585290503699377, 0.10684543130189988, -0.044429039700428045, 0.00992275362116206, -0.05658946278439193, -0.09577910350747855, 0.08286548796367932, 0.14585510243757954, 0.1016718624328005, 0.16062007168958703, -0.4816715709236731, -0.22433402117745704, 0.1406710282955543, 0.1414928847912654, 0.1680964894679723, -0.10014283963628479, -0.33800422490002163, 0.05035896743479443, -0.16374216698873115, -0.11220007400583835, -0.12739229980429792, -0.055917730559146096, -0.11626365427376635, -0.319150372610304, 0.08534381171991398, -0.032016959086240054, 0.08720748474209918, -0.036181904022099386, -0.047561405350016545, -0.09510107886001289, -0.018112363666857045, 0.13900342495012355, -0.018842566253460317, 0.16049733498212265, -0.1495065027679575, -0.12226274139977183, 0.46372985507709436, -0.07093911019928124, -0.12973496345073793, 0.18014676718837974, -0.0724825826249119, -0.22199933675779815, 0.08591499129388795, 0.10291419311213386, 0.13290105477334505, -0.13794532483050892, 0.19904732743926146, -0.021678633101464034, 0.1573731209185109, 0.01518036459898015, 0.004975860265184598, 0.2843243816575731, 0.21059416383729282, 0.09316087156640793, 0.0993029229365379, 0.014107459983564016, -0.17204611341213719, -0.449508148699954, -0.06667464742077941, -0.17852749068469528, 0.00903755281378616, -0.09933152720763444, -0.09255994780056448, 0.4453842316765383, 0.1394043893845056, 0.20042302342782536, 0.013972538300363505, 0.25532232296754076, 0.09433527037232037, 0.12260821343859635, 0.02754730038507561, 0.2450716732159616, 0.06379240727983415, 0.04447223942906382, -0.17365329213621353, -0.022876043484198402, 0.07746975533720331] |
709.3984 | The 3.6-8.0 Micron Broadband Emission Spectrum of HD 209458b: Evidence
for an Atmospheric Temperature Inversion | We estimate the strength of the bandpass-integrated thermal emission from the
extrasolar planet HD 209458b at 3.6, 4.5, 5.8, and 8.0 microns using the
Infrared Array Camera (IRAC) on the Spitzer Space Telescope. We observe a
single secondary eclipse simultaneously in all four bandpasses and find
relative eclipse depths of 0.00094 +/- 0.00009, 0.00213 +/- 0.00015, 0.00301
+/- 0.00043, and 0.00240 +/- 0.00026, respectively. These eclipse depths reveal
that the shape of the inferred emission spectrum for the planet differs
significantly from the predictions of standard atmosphere models; instead the
most plausible explanation would require the presence of an inversion layer
high in the atmosphere leading to significant water emission in the 4.5 and 5.8
micron bandpasses. This is the first clear indication of such a temperature
inversion in the atmosphere of a hot Jupiter, as previous observations of other
planets appeared to be in reasonably good agreement with the predictions of
models without such an inversion layer.
| astro-ph | we estimate the strength of the bandpassintegrated thermal emission from the extrasolar planet hd 209458b at 36 45 58 and 80 microns using the infrared array camera irac on the spitzer space telescope we observe a single secondary eclipse simultaneously in all four bandpasses and find relative eclipse depths of 000094 000009 000213 000015 000301 000043 and 000240 000026 respectively these eclipse depths reveal that the shape of the inferred emission spectrum for the planet differs significantly from the predictions of standard atmosphere models instead the most plausible explanation would require the presence of an inversion layer high in the atmosphere leading to significant water emission in the 45 and 58 micron bandpasses this is the first clear indication of such a temperature inversion in the atmosphere of a hot jupiter as previous observations of other planets appeared to be in reasonably good agreement with the predictions of models without such an inversion layer | [['we', 'estimate', 'the', 'strength', 'of', 'the', 'bandpassintegrated', 'thermal', 'emission', 'from', 'the', 'extrasolar', 'planet', 'hd', '209458b', 'at', '36', '45', '58', 'and', '80', 'microns', 'using', 'the', 'infrared', 'array', 'camera', 'irac', 'on', 'the', 'spitzer', 'space', 'telescope', 'we', 'observe', 'a', 'single', 'secondary', 'eclipse', 'simultaneously', 'in', 'all', 'four', 'bandpasses', 'and', 'find', 'relative', 'eclipse', 'depths', 'of', '000094', '000009', '000213', '000015', '000301', '000043', 'and', '000240', '000026', 'respectively', 'these', 'eclipse', 'depths', 'reveal', 'that', 'the', 'shape', 'of', 'the', 'inferred', 'emission', 'spectrum', 'for', 'the', 'planet', 'differs', 'significantly', 'from', 'the', 'predictions', 'of', 'standard', 'atmosphere', 'models', 'instead', 'the', 'most', 'plausible', 'explanation', 'would', 'require', 'the', 'presence', 'of', 'an', 'inversion', 'layer', 'high', 'in', 'the', 'atmosphere', 'leading', 'to', 'significant', 'water', 'emission', 'in', 'the', '45', 'and', '58', 'micron', 'bandpasses', 'this', 'is', 'the', 'first', 'clear', 'indication', 'of', 'such', 'a', 'temperature', 'inversion', 'in', 'the', 'atmosphere', 'of', 'a', 'hot', 'jupiter', 'as', 'previous', 'observations', 'of', 'other', 'planets', 'appeared', 'to', 'be', 'in', 'reasonably', 'good', 'agreement', 'with', 'the', 'predictions', 'of', 'models', 'without', 'such', 'an', 'inversion', 'layer']] | [-0.04849267470952425, 0.10196951992760217, -0.05014707006960856, 0.05207697897394364, -0.05827112016708565, -0.08944271307602222, 0.07152437039405561, 0.40438821241007866, -0.1797484825512731, -0.38929823158636084, 0.07934128184334023, -0.3117701630926112, -0.09556185777457997, 0.1821111202919604, -0.0648719910846872, 0.013950348915091742, 0.09532898187171668, -0.08388417086570298, -0.02062904294359976, -0.20898019201435877, 0.2098473987063846, 0.08952607936225832, 0.146578016823057, 0.046935078017791176, 0.030151073087787104, -0.056804443404355365, -0.06727670180623897, -0.0688676138039178, -0.13566036200697723, 0.05079958398788664, 0.207539609763026, 0.07954618917161448, 0.11236877883139469, -0.3827765741066164, -0.24928222163706212, 0.04068364420792834, 0.12166142644599785, 0.03688987188443944, 0.014537745234839668, -0.24282315048716357, 0.03845985776845466, -0.14884521479315654, -0.12745107678268608, 0.0610038293966067, 0.03835756691625795, -0.042350999356524366, -0.2784248315162856, 0.05355197650606971, 0.026379390472848662, 0.18005096018188507, -0.1712504984870729, -0.18763144282825492, -0.10301655934056947, 0.08633726429685044, 0.0013065521158529697, 0.04742661619093269, 0.13872991890545833, -0.1248091500939965, -0.04073191496442903, 0.39604848929101955, -0.17425387673555068, 0.018645297333195403, 0.2391505108617649, -0.21394040237331913, -0.11567529387193153, 0.23321693763608817, 0.11688693831800609, 0.09516942528402118, -0.14813818166196044, -0.007654757901233294, -0.04339206248609903, 0.25136865024624794, 0.08192947382308743, 0.06571402729639737, 0.36024054807510125, 0.11202908929506619, 0.037299269753684465, 0.09737487367434565, -0.3181652985875042, -0.045124774078234425, -0.2336194457146465, -0.13781959647029587, -0.12280390291188441, 0.03405508981086314, -0.14040593308399785, -0.11359982230724937, 0.374139272634607, 0.19139150120679768, 0.21511792337853852, 0.05632342747412622, 0.33454613152236956, 0.08725120190678895, 0.11564090195728617, 0.08643222775473888, 0.3409118424673137, 0.09629896303286424, 0.11853820554962433, -0.21607742308185915, 0.07038769007163323, -0.04353118397016629] |
709.3985 | Measuring Supersymmetry | If new physics is found at the LHC (and the ILC) the reconstruction of the
underlying theory should not be biased by assumptions about high--scale models.
For the mapping of many measurements onto high--dimensional parameter spaces we
introduce SFitter with its new weighted Markov chain technique. SFitter
constructs an exclusive likelihood map, determines the best--fitting parameter
point and produces a ranked list of the most likely parameter points. Using the
example of the TeV--scale supersymmetric Lagrangian we show how a
high--dimensional likelihood map will generally include degeneracies and strong
correlations. SFitter allows us to study such model--parameter spaces employing
Bayesian as well as frequentist constructions. We illustrate in detail how it
should be possible to analyze high--dimensional new--physics parameter spaces
like the TeV--scale MSSM at the LHC. A combination of LHC and ILC measurements
might well be able to completely cover highly complex TeV--scale parameter
spaces.
| hep-ph hep-ex | if new physics is found at the lhc and the ilc the reconstruction of the underlying theory should not be biased by assumptions about highscale models for the mapping of many measurements onto highdimensional parameter spaces we introduce sfitter with its new weighted markov chain technique sfitter constructs an exclusive likelihood map determines the bestfitting parameter point and produces a ranked list of the most likely parameter points using the example of the tevscale supersymmetric lagrangian we show how a highdimensional likelihood map will generally include degeneracies and strong correlations sfitter allows us to study such modelparameter spaces employing bayesian as well as frequentist constructions we illustrate in detail how it should be possible to analyze highdimensional newphysics parameter spaces like the tevscale mssm at the lhc a combination of lhc and ilc measurements might well be able to completely cover highly complex tevscale parameter spaces | [['if', 'new', 'physics', 'is', 'found', 'at', 'the', 'lhc', 'and', 'the', 'ilc', 'the', 'reconstruction', 'of', 'the', 'underlying', 'theory', 'should', 'not', 'be', 'biased', 'by', 'assumptions', 'about', 'highscale', 'models', 'for', 'the', 'mapping', 'of', 'many', 'measurements', 'onto', 'highdimensional', 'parameter', 'spaces', 'we', 'introduce', 'sfitter', 'with', 'its', 'new', 'weighted', 'markov', 'chain', 'technique', 'sfitter', 'constructs', 'an', 'exclusive', 'likelihood', 'map', 'determines', 'the', 'bestfitting', 'parameter', 'point', 'and', 'produces', 'a', 'ranked', 'list', 'of', 'the', 'most', 'likely', 'parameter', 'points', 'using', 'the', 'example', 'of', 'the', 'tevscale', 'supersymmetric', 'lagrangian', 'we', 'show', 'how', 'a', 'highdimensional', 'likelihood', 'map', 'will', 'generally', 'include', 'degeneracies', 'and', 'strong', 'correlations', 'sfitter', 'allows', 'us', 'to', 'study', 'such', 'modelparameter', 'spaces', 'employing', 'bayesian', 'as', 'well', 'as', 'frequentist', 'constructions', 'we', 'illustrate', 'in', 'detail', 'how', 'it', 'should', 'be', 'possible', 'to', 'analyze', 'highdimensional', 'newphysics', 'parameter', 'spaces', 'like', 'the', 'tevscale', 'mssm', 'at', 'the', 'lhc', 'a', 'combination', 'of', 'lhc', 'and', 'ilc', 'measurements', 'might', 'well', 'be', 'able', 'to', 'completely', 'cover', 'highly', 'complex', 'tevscale', 'parameter', 'spaces']] | [-0.03876217817074351, 0.14075829231984394, -0.08809231203814892, 0.1888603757124407, -0.15224251222528823, -0.18133767200825252, 0.02972026743163827, 0.35862779921584137, -0.297685844655474, -0.2862459629461526, 0.10948361991665466, -0.24986377000110624, -0.1091723005631811, 0.18978562997016188, -0.04916830085638962, 0.08714635248897176, 0.06506635191729165, -0.03158017304368725, -0.08512704657456098, -0.25239800166797965, 0.3113087694996279, 0.09712119764418736, 0.19730140221120201, 0.016919973622114486, 0.09364044340008436, 0.04502424789426772, -0.03846444463363708, -0.005214816499150626, -0.16343595733633265, 0.09952971251834541, 0.30641519803385275, 0.16521819616502073, 0.2038472278828235, -0.3249589424861008, -0.19007610388527535, 0.19581266284014467, 0.14326764807768472, 0.10329611377937285, 0.0005649968452292355, -0.3000768344045604, 0.05790491054657439, -0.1779128891760356, -0.11010658872562576, -0.15489477324395198, -0.08801073571730865, -0.06044493938560202, -0.331583253232354, 0.014139440161022932, -0.025173978722169484, 0.010421881924243006, 0.008187138139388256, -0.12501391105526063, -0.07111884524395103, 0.033886750471102046, 0.0549117537830918, 0.014599032105227346, 0.15822519485404946, -0.11682466077076092, -0.15780603973041862, 0.36857467350128986, -0.03393000953078066, -0.22294856947432082, 0.1876491032068758, -0.16882766582301423, -0.21227955900783307, 0.07585830643632743, 0.202405108333476, 0.08568211492591167, -0.15497511638047762, 0.17404398240933627, -0.0204833623353545, 0.17904379739436443, 0.020651759573398796, 0.03567146837762366, 0.24260796845750246, 0.20197594761593293, 0.10201643031267513, 0.10204626557940286, -0.10945634659832625, -0.08904337919873746, -0.3792568826984155, -0.10957602169109534, -0.11767382000585737, 0.006282700152652281, -0.12840324358285837, -0.1449854956805859, 0.3834574053618955, 0.1806820683627474, 0.24945697486273025, 0.030655211387903825, 0.2537453992113675, 0.06452295399742992, 0.03873388214381284, 0.017890831248273384, 0.2563245003462501, 0.11187595210822733, 0.043803064788895826, -0.14008002727107488, 0.0463519079725526, 0.07437148438096812] |
709.3986 | On Yamamuro's inverse and implicit function theorems in terms of
calibrations | For the Frechet space E=C^{\infty}(S^1) and for a smooth \phi: R to R, we
prove that the associated map E to E given by x mapsto\phi\circ x satisfies the
continuous B\Gamma--differentiability condition in Yamamuro's inverse function
theorem only if \phi is affine. Via more complicated examples, we also
generally discuss the importance of testing the applicability of proposed
inverse and implicit function theorems by this kind of simple maps.
| math.FA | for the frechet space ecinftys1 and for a smooth phi r to r we prove that the associated map e to e given by x mapstophicirc x satisfies the continuous bgammadifferentiability condition in yamamuros inverse function theorem only if phi is affine via more complicated examples we also generally discuss the importance of testing the applicability of proposed inverse and implicit function theorems by this kind of simple maps | [['for', 'the', 'frechet', 'space', 'ecinftys1', 'and', 'for', 'a', 'smooth', 'phi', 'r', 'to', 'r', 'we', 'prove', 'that', 'the', 'associated', 'map', 'e', 'to', 'e', 'given', 'by', 'x', 'mapstophicirc', 'x', 'satisfies', 'the', 'continuous', 'bgammadifferentiability', 'condition', 'in', 'yamamuros', 'inverse', 'function', 'theorem', 'only', 'if', 'phi', 'is', 'affine', 'via', 'more', 'complicated', 'examples', 'we', 'also', 'generally', 'discuss', 'the', 'importance', 'of', 'testing', 'the', 'applicability', 'of', 'proposed', 'inverse', 'and', 'implicit', 'function', 'theorems', 'by', 'this', 'kind', 'of', 'simple', 'maps']] | [-0.10054557740939064, 0.04857752016530587, -0.07923841630466856, 0.10857837458069508, -0.07030795408556094, -0.14037112939672974, 0.041251145074000725, 0.38177114098619386, -0.33270318559729134, -0.19062818724375505, 0.0897496284254325, -0.21163088613404676, -0.1795693930525046, 0.24770500326099304, -0.0785035247556292, 0.03907202212856366, 0.03531008139252663, 0.059752552239940714, -0.13650438737912246, -0.2248992244515998, 0.36726477277966646, -0.0073582046307050265, 0.19728778504694883, 0.06970650842413306, 0.1730424458734118, 0.07239621630511604, -0.03727159385497753, 0.017085485725860612, -0.18450759987832638, 0.11075379634992434, 0.23996762362523721, 0.14650216610887304, 0.27230477573779915, -0.33397654429651225, -0.16171767834860545, 0.21984722634347587, 0.06275631154959019, -0.07184979839680286, -0.02668968907024604, -0.2714708850933955, 0.17552981349961974, -0.11213574266204467, -0.15404603780748752, -0.09051780372571487, 0.13450187850170411, 0.03624392075893971, -0.32016505687855756, 0.05589707718329289, 0.14131735543218943, 0.05053940722002433, -0.02295445754694251, -0.07656814690249471, -0.0500186808156566, 0.018846733689021605, 0.020310603221878408, 0.09276608042418957, 0.11534779689346368, -0.10621214351043679, -0.04752857531779087, 0.33474385698254294, -0.06733257165895058, -0.26853317043815667, 0.1583023521046226, -0.1475944138633517, -0.13773451156627672, 0.1009851378102142, 0.12043606697653349, 0.13667166426491278, -0.08783940182855496, 0.2147737366774191, -0.07147436533750107, 0.11108026759555707, 0.05918417790761361, -0.03965808529263506, 0.10725704551531146, 0.07387151407221189, 0.12186032446423689, 0.17239519248788174, -0.034559602047710754, -0.02290380423745284, -0.40051200991639724, -0.18471718217031313, -0.1871480711091023, 0.0924528470549446, -0.10896291149592098, -0.12806847465152923, 0.34477620255918456, 0.08868075208738446, 0.21106671223846765, 0.09160574084291091, 0.2549163384219775, 0.1584491368383169, 0.006530845924638785, 0.05455677488532204, 0.13242736791905302, 0.16128741859530027, 0.05655378008691164, -0.1476557628144152, 0.03353802307437246, 0.1326158388159596] |
709.3987 | Disk Growth in Bulge-Dominated Galaxies: Molecular Gas and Morphological
Evolution | Substantial numbers of morphologically regular early-type (elliptical and
lenticular) galaxies contain molecular gas, and the quantities of gas are
probably sufficient to explain recent estimates of the current level of star
formation activity. This gas can also be used as a tracer of the processes that
drive the evolution of early-type galaxies. For example, in most cases the gas
is forming dynamically cold stellar disks with sizes in the range of hundreds
of pc to more than one kpc, although there is typically only 1% of the total
stellar mass currently available to form young stars. The numbers are still
small, but the molecular kinematics indicate that some of the gas probably
originated from internal stellar mass loss while some was acquired from
outside. Future studies will help to quantify the role of molecular gas
(dissipational processes) in the formation of early-type galaxies and their
evolution along the red sequence.
| astro-ph | substantial numbers of morphologically regular earlytype elliptical and lenticular galaxies contain molecular gas and the quantities of gas are probably sufficient to explain recent estimates of the current level of star formation activity this gas can also be used as a tracer of the processes that drive the evolution of earlytype galaxies for example in most cases the gas is forming dynamically cold stellar disks with sizes in the range of hundreds of pc to more than one kpc although there is typically only 1 of the total stellar mass currently available to form young stars the numbers are still small but the molecular kinematics indicate that some of the gas probably originated from internal stellar mass loss while some was acquired from outside future studies will help to quantify the role of molecular gas dissipational processes in the formation of earlytype galaxies and their evolution along the red sequence | [['substantial', 'numbers', 'of', 'morphologically', 'regular', 'earlytype', 'elliptical', 'and', 'lenticular', 'galaxies', 'contain', 'molecular', 'gas', 'and', 'the', 'quantities', 'of', 'gas', 'are', 'probably', 'sufficient', 'to', 'explain', 'recent', 'estimates', 'of', 'the', 'current', 'level', 'of', 'star', 'formation', 'activity', 'this', 'gas', 'can', 'also', 'be', 'used', 'as', 'a', 'tracer', 'of', 'the', 'processes', 'that', 'drive', 'the', 'evolution', 'of', 'earlytype', 'galaxies', 'for', 'example', 'in', 'most', 'cases', 'the', 'gas', 'is', 'forming', 'dynamically', 'cold', 'stellar', 'disks', 'with', 'sizes', 'in', 'the', 'range', 'of', 'hundreds', 'of', 'pc', 'to', 'more', 'than', 'one', 'kpc', 'although', 'there', 'is', 'typically', 'only', '1', 'of', 'the', 'total', 'stellar', 'mass', 'currently', 'available', 'to', 'form', 'young', 'stars', 'the', 'numbers', 'are', 'still', 'small', 'but', 'the', 'molecular', 'kinematics', 'indicate', 'that', 'some', 'of', 'the', 'gas', 'probably', 'originated', 'from', 'internal', 'stellar', 'mass', 'loss', 'while', 'some', 'was', 'acquired', 'from', 'outside', 'future', 'studies', 'will', 'help', 'to', 'quantify', 'the', 'role', 'of', 'molecular', 'gas', 'dissipational', 'processes', 'in', 'the', 'formation', 'of', 'earlytype', 'galaxies', 'and', 'their', 'evolution', 'along', 'the', 'red', 'sequence']] | [-0.06778556492490073, 0.12476207034351926, -0.0584692619740963, 0.11100142836027468, -0.06751921175047755, -0.009804325957472125, 0.005940168280309687, 0.4068729873994986, -0.16989416071601832, -0.34583821598750847, 0.0733615551648351, -0.25991353396947187, -0.03472230678113798, 0.21459623395698146, -0.015058278534561396, -0.03310847445546339, 0.06776091754902154, -0.057689222184320293, -0.02494393814976017, -0.2872502246250709, 0.3298270460839073, 0.05650612088230749, 0.11027664876542985, -0.028002489463736614, 0.03872047189079846, -0.15839396090634789, -0.06775929131545126, -0.05333329332440674, -0.14261640817887383, 0.062347073081958415, 0.24431711343427498, 0.12794237638513248, 0.269242989141494, -0.416232694350183, -0.20706735476696242, 0.08754287149757146, 0.23577035108425964, 0.06764150473133972, -0.11354890758064963, -0.2300140835872541, 0.07480564748984761, -0.1721549584615665, -0.19006663175144542, 0.05065637603557358, 0.05641155257821083, 0.07214658115020332, -0.20715047299241027, 0.1862097886846944, 0.042009025880446034, 0.09203557430456082, -0.08607590985173981, -0.10826923727057874, -0.11187019647099078, 0.11294049233508607, 0.01697773682884872, 0.07520198031425632, 0.27361384411652884, -0.1764050711831078, 0.02148394168354571, 0.44010288987308743, -0.014692178393888753, -0.06456768228362005, 0.30603861359258494, -0.25381264979640644, -0.1750754429710408, 0.1396198104384045, 0.16274071311578153, 0.08512491867567103, -0.17342850008416766, -0.040996237438715374, -0.046301935392742355, 0.20028549572491708, 0.056629875190556046, 0.07921505205643674, 0.35011023317774137, 0.11248867626146723, 0.008849034712960323, 0.07974274001549929, -0.15514187232901652, -0.10031640849386653, -0.1985066069010645, -0.1217634918075055, -0.12451349308248609, 0.06893741593851398, -0.10736753761118356, -0.11288631623300413, 0.3007923094757522, 0.10167521038092672, 0.2473002646242579, 0.022529391649198562, 0.30543068373265364, 0.05314063178414168, 0.16493082230755438, 0.11884402178227901, 0.25314541766924475, 0.18738878429401665, 0.052267288101526595, -0.250904054933538, 0.1034268861366824, -0.03125207268477728] |
709.3988 | Do f(R) theories matter? | We consider a modified action functional with a non-minimum coupling between
the scalar curvature and the matter Lagrangian, and study its consequences on
stellar equilibrium. Particular attention is paid to the validity of the
Newtonian regime, and on the boundary and exterior matching conditions, as well
as on the redefinition of the metric components. Comparison with solar
observables is achieved through numerical analysis, and constraints on the
non-minimum coupling are discussed.
| astro-ph | we consider a modified action functional with a nonminimum coupling between the scalar curvature and the matter lagrangian and study its consequences on stellar equilibrium particular attention is paid to the validity of the newtonian regime and on the boundary and exterior matching conditions as well as on the redefinition of the metric components comparison with solar observables is achieved through numerical analysis and constraints on the nonminimum coupling are discussed | [['we', 'consider', 'a', 'modified', 'action', 'functional', 'with', 'a', 'nonminimum', 'coupling', 'between', 'the', 'scalar', 'curvature', 'and', 'the', 'matter', 'lagrangian', 'and', 'study', 'its', 'consequences', 'on', 'stellar', 'equilibrium', 'particular', 'attention', 'is', 'paid', 'to', 'the', 'validity', 'of', 'the', 'newtonian', 'regime', 'and', 'on', 'the', 'boundary', 'and', 'exterior', 'matching', 'conditions', 'as', 'well', 'as', 'on', 'the', 'redefinition', 'of', 'the', 'metric', 'components', 'comparison', 'with', 'solar', 'observables', 'is', 'achieved', 'through', 'numerical', 'analysis', 'and', 'constraints', 'on', 'the', 'nonminimum', 'coupling', 'are', 'discussed']] | [-0.14192740048091648, 0.08827643193186484, -0.06927845159440603, 0.0654989088603466, -0.10381010410533299, -0.10060917144365819, 0.009081434117446482, 0.32907974031347204, -0.19683868529825982, -0.3117968023977649, 0.13329884860480964, -0.26960072518182054, -0.1683956511108808, 0.17064293790083956, -0.02332853292390494, 0.07094438079478954, 0.04798792597745925, 0.09130032621094511, -0.08758106316820206, -0.1782266588022434, 0.3676592221509823, 0.049365572755972684, 0.23308003590520943, 0.1049494818574421, 0.11815740843631432, -0.01904205945369617, -0.02769091397746873, 0.04561748659946549, -0.16879084051757212, 0.06934040011575734, 0.13602437485586588, 0.0694541152120686, 0.23151029982197452, -0.41445506852067693, -0.24493819893613247, 0.06309463472013742, 0.06040160609146868, 0.04111628939436985, -0.05398456392232591, -0.30319341106838743, 0.04809111919955836, -0.14434056001072618, -0.09919964376522201, -0.08201276603430299, -0.031369545195304174, 0.013435249908787894, -0.2824238984202835, 0.05329000192750114, 0.015816117671292117, 0.042769200430894404, -0.09320378245320171, -0.07942861977072668, -0.06268153839718393, 0.0946410193934407, 0.1251518373085763, 0.0031297773903262026, 0.14055682074042483, -0.1578386244429669, -0.03558255012743962, 0.4512908570468426, -0.11621644141965769, -0.2611196033236846, 0.19903713325694414, -0.10877504405027753, -0.10103297030920504, -0.0029538117126155067, 0.17511710262214633, 0.13123122201314275, -0.11241207789944511, 0.15676670378110122, 0.014501599098135993, 0.11712521562208487, 0.0888376017101109, 0.03979701300899328, 0.23012160452108987, 0.15838611613578674, 0.06760341925519883, 0.1307958473359615, -0.05333182903360838, -0.18481236966458006, -0.3554255134937629, -0.11347302132036904, -0.15394217586538322, 0.01958720367172287, -0.14177278487538938, -0.14898295621190902, 0.4035074855922393, 0.1000486278093197, 0.1791825730970103, 0.05246317679141189, 0.31160656992398517, 0.1548885313472645, 0.028205579297590842, 0.02616901569802996, 0.3363639184496772, 0.21283657436954304, 0.08042735112568652, -0.29333961583201734, 0.021883137065025284, 0.08732369916946431] |
709.3989 | Proton-Proton and Proton-Neutron Correlations in Medium-Weight Nuclei:
Role of the Tensor Force within a Many-Body Cluster Expansion | A detailed analysis of the effect of tensor correlations on one- and two-body
densities and momentum distributions of complex nuclei is presented within a
linked cluster expansion providing reliable results for the ground state
properties of nuclei calculated with realistic interactions.
| nucl-th | a detailed analysis of the effect of tensor correlations on one and twobody densities and momentum distributions of complex nuclei is presented within a linked cluster expansion providing reliable results for the ground state properties of nuclei calculated with realistic interactions | [['a', 'detailed', 'analysis', 'of', 'the', 'effect', 'of', 'tensor', 'correlations', 'on', 'one', 'and', 'twobody', 'densities', 'and', 'momentum', 'distributions', 'of', 'complex', 'nuclei', 'is', 'presented', 'within', 'a', 'linked', 'cluster', 'expansion', 'providing', 'reliable', 'results', 'for', 'the', 'ground', 'state', 'properties', 'of', 'nuclei', 'calculated', 'with', 'realistic', 'interactions']] | [-0.11616454904944432, 0.13197644508057615, -0.11625364839195887, 0.13519519789246615, 0.0077713620735377804, -0.04846157667386096, 0.03872501273162481, 0.34842431713349936, -0.17735385370054624, -0.28922560974592115, 0.00747723039239645, -0.31602258485083173, -0.011436821370408303, 0.15428705531649473, 0.1416503758135638, 0.017849469205319154, 0.08844579272426484, 0.023142240078347486, -0.09787785048346694, -0.1558854121078805, 0.3531234350010026, 0.0926401686922806, 0.2589198992837493, 0.07857452296629185, 0.08506538589462274, 0.05848696039671578, -0.03812039634440004, 0.03239748159014597, -0.12256286216036576, 0.14957558838423432, 0.19992997069138943, 0.07226383503208436, 0.1861426188701355, -0.42268182450860015, -0.20991822409375413, 0.05012537193734471, 0.14001101977759745, 0.12261906937446172, -0.0876456913907399, -0.31268018102500494, 0.008989476428435342, -0.22339842577533023, -0.19208575780617027, -0.15970383014348222, 0.0651020335896713, 0.07103656466323428, -0.2810113066125934, 0.14745142896909538, -0.009929560323631981, 0.053713243182112534, -0.13319353925109637, -0.17266649416670565, -0.023208581388178395, 0.14624287593519178, 0.0009814925525882623, -0.0011896931043848759, 0.16083968412585375, -0.15388825263192013, -0.06339367842528879, 0.40852268462682645, 0.014476739642460172, -0.18007344114253435, 0.19038557629214553, -0.1603575399281775, -0.1432627821568309, 0.15570200633303058, 0.17155090068671397, 0.12677382601697634, -0.14810161878604713, 0.00903750901258119, 0.012279062668179594, 0.16216560354933324, -0.06332223752808826, 0.08341228271402963, 0.19103233725195978, 0.18937546880234304, -0.01971940732583767, 0.11206534669007652, -0.0854679024153639, -0.16556982346242521, -0.2993401181770534, -0.09378866312979925, -0.18803876745173845, 0.02660213174900358, -0.08727156851233392, -0.13740631520021251, 0.4156329308341189, 0.04665092309573438, 0.22278746127054413, -0.00846632349691013, 0.29231394927312687, 0.06385172051718323, 0.05426556076400164, 0.04219289148714757, 0.271819567080678, 0.2411861383219863, 0.017153450435527216, -0.23518223413152667, 0.08109208582559736, 0.021242580098304445] |
709.399 | Fractional Diffusion Processes: Probability Distributions and Continuous
Time Random Walk | A physical-mathematical approach to anomalous diffusion may be based on
fractional diffusion equations and related random walk models. The fundamental
solutions of these equations can be interpreted as probability densities
evolving in time of peculiar self-similar stochastic processes: an integral
representation of these solutions is here presented. A more general approach to
anomalous diffusion is known to be provided by the master equation for a
continuous time random walk (CTRW). We show how this equation reduces to our
fractional diffusion equation by a properly scaled passage to the limit of
compressed waiting times and jump widths. Finally, we describe a method of
simulation and display (via graphics) results of a few numerical case studies.
| cond-mat.stat-mech math-ph math.MP math.PR | a physicalmathematical approach to anomalous diffusion may be based on fractional diffusion equations and related random walk models the fundamental solutions of these equations can be interpreted as probability densities evolving in time of peculiar selfsimilar stochastic processes an integral representation of these solutions is here presented a more general approach to anomalous diffusion is known to be provided by the master equation for a continuous time random walk ctrw we show how this equation reduces to our fractional diffusion equation by a properly scaled passage to the limit of compressed waiting times and jump widths finally we describe a method of simulation and display via graphics results of a few numerical case studies | [['a', 'physicalmathematical', 'approach', 'to', 'anomalous', 'diffusion', 'may', 'be', 'based', 'on', 'fractional', 'diffusion', 'equations', 'and', 'related', 'random', 'walk', 'models', 'the', 'fundamental', 'solutions', 'of', 'these', 'equations', 'can', 'be', 'interpreted', 'as', 'probability', 'densities', 'evolving', 'in', 'time', 'of', 'peculiar', 'selfsimilar', 'stochastic', 'processes', 'an', 'integral', 'representation', 'of', 'these', 'solutions', 'is', 'here', 'presented', 'a', 'more', 'general', 'approach', 'to', 'anomalous', 'diffusion', 'is', 'known', 'to', 'be', 'provided', 'by', 'the', 'master', 'equation', 'for', 'a', 'continuous', 'time', 'random', 'walk', 'ctrw', 'we', 'show', 'how', 'this', 'equation', 'reduces', 'to', 'our', 'fractional', 'diffusion', 'equation', 'by', 'a', 'properly', 'scaled', 'passage', 'to', 'the', 'limit', 'of', 'compressed', 'waiting', 'times', 'and', 'jump', 'widths', 'finally', 'we', 'describe', 'a', 'method', 'of', 'simulation', 'and', 'display', 'via', 'graphics', 'results', 'of', 'a', 'few', 'numerical', 'case', 'studies']] | [-0.08071005435378634, 0.13411419830612303, -0.13218668967959257, 0.0634701558390812, -0.07825615694909765, -0.12858536943237772, 0.03188827794388329, 0.37952303579240515, -0.3123015453717304, -0.25313629679741306, 0.12395600078672399, -0.26333441362275106, -0.17430316381924377, 0.21601737950716102, -0.039365931380496225, 0.09150730707404907, 0.04887586575524326, 0.014327751121304015, -0.03496117469152076, -0.22750050410334216, 0.25484418712164225, -0.0017737266280802718, 0.21689921108956792, 0.013773829496481963, 0.1326485349380068, -0.058049141719381796, -0.04733832943530982, 0.03824809020417824, -0.14973185337230302, 0.08384860784893758, 0.19022964817010865, 0.04267265808180367, 0.25804853329042854, -0.44829800702108624, -0.2626020817592609, 0.0744848792745503, 0.1909893822665796, 0.1295980143931637, -0.0439403262353153, -0.32351280969216306, 0.04315641762999197, -0.1398149599737831, -0.17185673276125862, -0.07804558360785768, 0.04849232048237402, 0.08041330059712525, -0.2781208977205352, 0.147104464830798, 0.04569011465482937, -0.04547149027910149, -0.06012539428111427, -0.07771147864057862, 0.02741680041225137, 0.07819183056422493, 0.04062920895388775, -0.011650817570881102, 0.11601684166510638, -0.09684078305297972, -0.16947412185305566, 0.38516346565366055, -0.12179753505226568, -0.2757366044516267, 0.1632781719172112, -0.16223879207513833, -0.13190831641437845, 0.1578197552650971, 0.20712094874480708, 0.15924703563857628, -0.21218357825030884, 0.06262205802813058, -0.030260334150832995, 0.11133773691886872, 0.014973706000059712, -0.03354163111030255, 0.11329857342092223, 0.18942307898970812, 0.04809509410539217, 0.10603455062690109, -0.04432582632197361, -0.17310006843814463, -0.3080747237330989, -0.18086349376755065, -0.2036294626999287, 0.13046424222799638, -0.14105779939832006, -0.1662104050547146, 0.35164865215407, 0.19734587249235788, 0.18714146899353518, 0.08682925063757259, 0.23972045134328174, 0.2682949727311273, 0.001154642372408457, 0.07132181336719282, 0.10274462169853218, 0.168836490573819, 0.13281154565170014, -0.2088216245256103, 0.06597627926487148, 0.10014161657901448] |
709.3991 | NEMO: A Project for a km$^3$ Underwater Detector for Astrophysical
Neutrinos in the Mediterranean Sea | The status of the project is described: the activity on long term
characterization of water optical and oceanographic parameters at the Capo
Passero site candidate for the Mediterranean km$^3$ neutrino telescope; the
feasibility study; the physics performances and underwater technology for the
km$^3$; the activity on NEMO Phase 1, a technological demonstrator that has
been deployed at 2000 m depth 25 km offshore Catania; the realization of an
underwater infrastructure at 3500 m depth at the candidate site (NEMO Phase 2).
| astro-ph | the status of the project is described the activity on long term characterization of water optical and oceanographic parameters at the capo passero site candidate for the mediterranean km3 neutrino telescope the feasibility study the physics performances and underwater technology for the km3 the activity on nemo phase 1 a technological demonstrator that has been deployed at 2000 m depth 25 km offshore catania the realization of an underwater infrastructure at 3500 m depth at the candidate site nemo phase 2 | [['the', 'status', 'of', 'the', 'project', 'is', 'described', 'the', 'activity', 'on', 'long', 'term', 'characterization', 'of', 'water', 'optical', 'and', 'oceanographic', 'parameters', 'at', 'the', 'capo', 'passero', 'site', 'candidate', 'for', 'the', 'mediterranean', 'km3', 'neutrino', 'telescope', 'the', 'feasibility', 'study', 'the', 'physics', 'performances', 'and', 'underwater', 'technology', 'for', 'the', 'km3', 'the', 'activity', 'on', 'nemo', 'phase', '1', 'a', 'technological', 'demonstrator', 'that', 'has', 'been', 'deployed', 'at', '2000', 'm', 'depth', '25', 'km', 'offshore', 'catania', 'the', 'realization', 'of', 'an', 'underwater', 'infrastructure', 'at', '3500', 'm', 'depth', 'at', 'the', 'candidate', 'site', 'nemo', 'phase', '2']] | [-0.11345397835355941, 0.17284451104735776, 0.05327766881910739, 0.029112905046879602, -0.005551559632115158, -0.10441486804205695, 0.018878433568817046, 0.3437992081643991, -0.15531267917910477, -0.38233084684628765, 0.20855586932121237, -0.33254055246526815, -0.08714788369216415, 0.23973788750461406, -0.0038750210294017087, 0.009030792528740417, 0.09726050958313325, 0.03269983561318598, -0.0025750046371723766, -0.24345147589014637, 0.18279305802957144, 0.2010071350916944, 0.32953408136273976, 0.08276806634931284, 0.18047714240297122, -0.0710957773823153, -0.02335772905383765, -0.11911678546464738, -0.15978697762455588, 0.015530085099148161, 0.2904425498765008, 0.13351004814188697, 0.2026361612111537, -0.3935013101838621, -0.1837188201887464, 0.06592650290141687, 0.034650659317978554, -0.046590370045583925, -0.03995738089096123, -0.3564537594865226, 0.06237497336495622, -0.2010838901164171, -0.23395154522271988, 0.11936970201700374, 0.04361593993495644, -0.032546829573097236, -0.20897677472942036, -0.07529954964231791, -0.08675708460771007, 0.1695166365818385, -0.03720567784743545, -0.18557735304290682, 0.014395196317051204, 0.1798672327990241, -0.05838499331191458, 0.053684387577375696, 0.12559523641844683, -0.14977332119496517, -0.024275155416057435, 0.37363321319176457, -0.05146880983949903, -0.0031735183510147496, 0.17204554662982255, -0.14182039756143902, -0.10528268761656902, 0.16760866548636077, 0.22293160897162226, 0.023791574812666687, -0.1863584847499927, 0.06117051023924163, -0.038033708148164515, 0.16001085722014124, 0.07942703885980594, -0.005975907605233384, 0.2803960173379308, 0.3644355656004246, 0.11806774726942365, 0.021313887480416415, -0.2732956123417588, -0.0020867194060558156, -0.2806116154670347, -0.14585816932635176, -0.16334364513786118, 0.009950063434245501, -0.02400316625659607, -0.05147612810617796, 0.4254347578059008, 0.13199040621812283, 0.04349007977195728, -0.009466279671745903, 0.30166506083728173, -0.06661430007007754, 0.10197894385854864, 0.03339832123759904, 0.2555446209684934, 0.052042905867881614, 0.21716407259903203, -0.20798097548856873, 0.03861447563826072, 0.0759590965592199] |
709.3992 | An X-ray Polarimeter for HXMT Mission | The development of micropixel gas detectors, capable to image tracks produced
in a gas by photoelectrons, makes possible to perform polarimetry of X-ray
celestial sources in the focus of grazing incidence X-ray telescopes. HXMT is a
mission by the Chinese Space Agency aimed to survey the Hard X-ray Sky with
Phoswich detectors, by exploitation of the direct demodulation technique. Since
a fraction of the HXMT time will be spent on dedicated pointing of particular
sources, it could host, with moderate additional resources a pair of X-ray
telescopes, each with a photoelectric X-ray polarimeter in the focal plane. We
present the design of the telescopes and the focal plane instrumentation and
discuss the performance of this instrument to detect the degree and angle of
linear polarization of some representative sources. Notwithstanding the limited
resources the proposed instrument can represent a breakthrough in X-ray
Polarimetry.
| astro-ph | the development of micropixel gas detectors capable to image tracks produced in a gas by photoelectrons makes possible to perform polarimetry of xray celestial sources in the focus of grazing incidence xray telescopes hxmt is a mission by the chinese space agency aimed to survey the hard xray sky with phoswich detectors by exploitation of the direct demodulation technique since a fraction of the hxmt time will be spent on dedicated pointing of particular sources it could host with moderate additional resources a pair of xray telescopes each with a photoelectric xray polarimeter in the focal plane we present the design of the telescopes and the focal plane instrumentation and discuss the performance of this instrument to detect the degree and angle of linear polarization of some representative sources notwithstanding the limited resources the proposed instrument can represent a breakthrough in xray polarimetry | [['the', 'development', 'of', 'micropixel', 'gas', 'detectors', 'capable', 'to', 'image', 'tracks', 'produced', 'in', 'a', 'gas', 'by', 'photoelectrons', 'makes', 'possible', 'to', 'perform', 'polarimetry', 'of', 'xray', 'celestial', 'sources', 'in', 'the', 'focus', 'of', 'grazing', 'incidence', 'xray', 'telescopes', 'hxmt', 'is', 'a', 'mission', 'by', 'the', 'chinese', 'space', 'agency', 'aimed', 'to', 'survey', 'the', 'hard', 'xray', 'sky', 'with', 'phoswich', 'detectors', 'by', 'exploitation', 'of', 'the', 'direct', 'demodulation', 'technique', 'since', 'a', 'fraction', 'of', 'the', 'hxmt', 'time', 'will', 'be', 'spent', 'on', 'dedicated', 'pointing', 'of', 'particular', 'sources', 'it', 'could', 'host', 'with', 'moderate', 'additional', 'resources', 'a', 'pair', 'of', 'xray', 'telescopes', 'each', 'with', 'a', 'photoelectric', 'xray', 'polarimeter', 'in', 'the', 'focal', 'plane', 'we', 'present', 'the', 'design', 'of', 'the', 'telescopes', 'and', 'the', 'focal', 'plane', 'instrumentation', 'and', 'discuss', 'the', 'performance', 'of', 'this', 'instrument', 'to', 'detect', 'the', 'degree', 'and', 'angle', 'of', 'linear', 'polarization', 'of', 'some', 'representative', 'sources', 'notwithstanding', 'the', 'limited', 'resources', 'the', 'proposed', 'instrument', 'can', 'represent', 'a', 'breakthrough', 'in', 'xray', 'polarimetry']] | [-0.11640274115952898, 0.12933070569826693, -0.06728431802907295, 0.05019380516287955, -0.12578742464489817, -0.07602216636149825, 0.05801305811611245, 0.43924552488785523, -0.2132026412918304, -0.3621689433336154, 0.12595992441569176, -0.3298255260382499, -0.06717616630314321, 0.2693077914898733, -0.0553526903658949, 0.05038170220486663, 0.11290512879304197, -0.09940647523055647, -0.036198711485546604, -0.24374370169793289, 0.2489509764306534, 0.2003290749487135, 0.2191609483589972, -0.018455605690165626, 0.15328937165693127, 0.03433611891004485, -0.11525901135747561, -0.021995049032058657, -0.044363503070821715, 0.1031139205027554, 0.32909568993804544, 0.16295327272402918, 0.2063721326518465, -0.393258823081851, -0.1942110674299456, 0.06928158133987572, 0.06703364098171045, -0.033651865789197856, -0.04695778144311837, -0.2769106511235029, -0.02213117214883645, -0.155645287975362, -0.1814597343628692, 0.017668824135716615, -0.010485040818477844, 0.06469498870738007, -0.16729883734670864, -0.04223467630392813, -0.01685814392529884, 0.05589255696436117, -0.08774370567586559, -0.06444098831681938, 0.01645630976458738, 0.081997813341058, -0.014156879722043039, 0.06694160986177207, 0.111705817956269, -0.15899821550917478, -0.09215297017871708, 0.38983441564300053, -0.013296169941997404, -0.06562643247278785, 0.15066155432735673, -0.2449042672825443, -0.1326630909591783, 0.20234073393154317, 0.20176136959629082, 0.12714963575330127, -0.17376391522234658, 0.030521461097409597, 0.0268810814331201, 0.2606768115208699, 0.08590542744369721, 0.06898895463535001, 0.3014716537151538, 0.21070796588331564, 0.09029051500300948, 0.19632709552647898, -0.3100245297134209, 0.05223911769412966, -0.24307350747261222, -0.1429890417591571, -0.17303354176692665, 0.046588778029313195, -0.03418279956516214, -0.1055859804753429, 0.37042954287628505, 0.1333658989108578, 0.10771688012165258, -0.02997331676672545, 0.38136844698606726, 0.0133956946323502, 0.11026301606349856, -0.003004983712274295, 0.31267324633268684, 0.08990982768769576, 0.13718144049122277, -0.20991059720607383, 0.06045541355151918, -0.008623841130728279] |
709.3993 | Plurisubharmonic polynomials and bumping | We wish to study the problem of bumping outwards a pseudoconvex, finite-type
domain \Omega\subset C^n in such a way that pseudoconvexity is preserved and
such that the lowest possible orders of contact of the bumped domain with
bdy(\Omega), at the site of the bumping, are explicitly realised. Generally,
when \Omega\subset C^n, n\geq 3, the known methods lead to bumpings with high
orders of contact -- which are not explicitly known either -- at the site of
the bumping. Precise orders are known for h-extendible/semiregular domains.
This paper is motivated by certain families of non-semiregular domains in C^3.
These families are identified by the behaviour of the least-weight
plurisubharmonic polynomial in the Catlin normal form. Accordingly, we study
how to perturb certain homogeneous plurisubharmonic polynomials without
destroying plurisubharmonicity.
| math.CV | we wish to study the problem of bumping outwards a pseudoconvex finitetype domain omegasubset cn in such a way that pseudoconvexity is preserved and such that the lowest possible orders of contact of the bumped domain with bdyomega at the site of the bumping are explicitly realised generally when omegasubset cn ngeq 3 the known methods lead to bumpings with high orders of contact which are not explicitly known either at the site of the bumping precise orders are known for hextendiblesemiregular domains this paper is motivated by certain families of nonsemiregular domains in c3 these families are identified by the behaviour of the leastweight plurisubharmonic polynomial in the catlin normal form accordingly we study how to perturb certain homogeneous plurisubharmonic polynomials without destroying plurisubharmonicity | [['we', 'wish', 'to', 'study', 'the', 'problem', 'of', 'bumping', 'outwards', 'a', 'pseudoconvex', 'finitetype', 'domain', 'omegasubset', 'cn', 'in', 'such', 'a', 'way', 'that', 'pseudoconvexity', 'is', 'preserved', 'and', 'such', 'that', 'the', 'lowest', 'possible', 'orders', 'of', 'contact', 'of', 'the', 'bumped', 'domain', 'with', 'bdyomega', 'at', 'the', 'site', 'of', 'the', 'bumping', 'are', 'explicitly', 'realised', 'generally', 'when', 'omegasubset', 'cn', 'ngeq', '3', 'the', 'known', 'methods', 'lead', 'to', 'bumpings', 'with', 'high', 'orders', 'of', 'contact', 'which', 'are', 'not', 'explicitly', 'known', 'either', 'at', 'the', 'site', 'of', 'the', 'bumping', 'precise', 'orders', 'are', 'known', 'for', 'hextendiblesemiregular', 'domains', 'this', 'paper', 'is', 'motivated', 'by', 'certain', 'families', 'of', 'nonsemiregular', 'domains', 'in', 'c3', 'these', 'families', 'are', 'identified', 'by', 'the', 'behaviour', 'of', 'the', 'leastweight', 'plurisubharmonic', 'polynomial', 'in', 'the', 'catlin', 'normal', 'form', 'accordingly', 'we', 'study', 'how', 'to', 'perturb', 'certain', 'homogeneous', 'plurisubharmonic', 'polynomials', 'without', 'destroying', 'plurisubharmonicity']] | [-0.1589081975188656, 0.09894321214209204, 0.0030046737462770742, 0.04834050821525915, -0.07077682919067438, -0.11522996996636273, 0.01158122680642352, 0.39631127994354876, -0.30747319621675206, -0.2358852837150764, 0.13135137112876094, -0.24886770044896203, -0.13322665595800662, 0.17796709905302183, -0.08703998517107646, 0.0012543893678755057, 0.02632606901480343, 0.04989025951363146, -0.09115994177075469, -0.2817383829034773, 0.41903469794225634, -0.061414280280348704, 0.1928349088449947, 0.07387002134604044, 0.0334668662418138, -0.07610318183776785, 0.026587670142227997, 0.01783075187828575, -0.1983123371387368, 0.131704644404054, 0.2614208829422676, 0.09510012374824432, 0.2287750323990085, -0.40579617322712647, -0.19073641217947312, 0.1612926311342458, 0.17829818537336636, 0.024136717556250572, 0.016545671146156907, -0.2833847662159165, 0.10053896149963934, -0.0926986501826981, -0.22488493293707, -0.05732167646723998, 0.015055911367392687, 0.06400877197242541, -0.23487480732299326, 0.07268894906537454, 0.13080143253700655, 0.0679788679403604, -0.043716860931275074, -0.1007488904383461, -0.05390240413472667, 0.10909250734653515, 0.012913354050337535, 0.10318872232570267, 0.07241698293865574, -0.09522756627764645, -0.09751525433585201, 0.355721235588254, -0.04228813719141801, -0.24958567458708755, 0.21327352982594586, -0.20700449122451856, -0.139025834679115, 0.13229499331324315, 0.09738750826017778, 0.1815396755223819, -0.11334411871772676, 0.11209590199783245, -0.04737733002202433, 0.10061118938792192, 0.16080658256885458, -0.008114266131057968, 0.14585300485343963, 0.1057683587032294, 0.13184952374822537, 0.13653926990285029, 0.0034328734151041897, -0.04227787228806906, -0.3181330528850744, -0.13088585833301308, -0.16260132079058495, 0.06829714073742774, -0.08657324351511082, -0.1662850598422963, 0.34818248314492894, 0.045327545124579406, 0.1860976118974189, 0.06015353895185637, 0.19347407388287124, 0.08398396026373642, 0.06960055750382484, 0.06549721978391047, 0.16674282048355604, 0.09824184743214215, 0.04825346719962163, -0.17368482212826122, 0.0679458064174081, 0.0795418786449877] |
709.3994 | Multi-Conjugate Adaptive Optics images of the Trapezium Cluster | Multi-Conjugate Adaptive Optics (MCAO) combines the advantages of standard
adaptive optics, which provides high contrast and high spatial resolution, and
of wide field ~1' imaging. Up to recently, MCAO for astronomy was limited to
laboratory experiments. In this paper, we present the first scientific results
obtained with the first MCAO instrument put on the sky. We present a new study
of the Trapezium cluster using deep MCAO images with a field of view of 1'x1'
obtained at the VLT. We have used deep J, H and Ks images recently obtained
with the prototype MCAO facility MAD at the VLT in order to search for new
members and new multiple systems in the Trapezium cluster. On bright targets
(Ks~9mag), these images allow us to reach DeltaKs~6mag as close as 0.4" We
report the detection of 128 sources, including 10 new faint objects in the
magnitude range between 16.1<Ks<17.9mag. In addition to all previously known
multiple systems with separations greater than 0.1", we confirm the
multiplicity of TCC-055. We also report the detection in J, H and Ks of a very
red extended embedded protostellar object, HC419, previously detected in the
thermal infrared only. The analysis of the first MCAO images obtained on the
sky demonstrates not only the technical feasibility of MCAO but also its great
potential and versatility in terms of scientific outputs.
| astro-ph | multiconjugate adaptive optics mcao combines the advantages of standard adaptive optics which provides high contrast and high spatial resolution and of wide field 1 imaging up to recently mcao for astronomy was limited to laboratory experiments in this paper we present the first scientific results obtained with the first mcao instrument put on the sky we present a new study of the trapezium cluster using deep mcao images with a field of view of 1x1 obtained at the vlt we have used deep j h and ks images recently obtained with the prototype mcao facility mad at the vlt in order to search for new members and new multiple systems in the trapezium cluster on bright targets ks9mag these images allow us to reach deltaks6mag as close as 04 we report the detection of 128 sources including 10 new faint objects in the magnitude range between 161ks179mag in addition to all previously known multiple systems with separations greater than 01 we confirm the multiplicity of tcc055 we also report the detection in j h and ks of a very red extended embedded protostellar object hc419 previously detected in the thermal infrared only the analysis of the first mcao images obtained on the sky demonstrates not only the technical feasibility of mcao but also its great potential and versatility in terms of scientific outputs | [['multiconjugate', 'adaptive', 'optics', 'mcao', 'combines', 'the', 'advantages', 'of', 'standard', 'adaptive', 'optics', 'which', 'provides', 'high', 'contrast', 'and', 'high', 'spatial', 'resolution', 'and', 'of', 'wide', 'field', '1', 'imaging', 'up', 'to', 'recently', 'mcao', 'for', 'astronomy', 'was', 'limited', 'to', 'laboratory', 'experiments', 'in', 'this', 'paper', 'we', 'present', 'the', 'first', 'scientific', 'results', 'obtained', 'with', 'the', 'first', 'mcao', 'instrument', 'put', 'on', 'the', 'sky', 'we', 'present', 'a', 'new', 'study', 'of', 'the', 'trapezium', 'cluster', 'using', 'deep', 'mcao', 'images', 'with', 'a', 'field', 'of', 'view', 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709.3995 | The circular law for random matrices | We consider the joint distribution of real and imaginary parts of eigenvalues
of random matrices with independent entries with mean zero and unit variance.
We prove the convergence of this distribution to the uniform distribution on
the unit disc without assumptions on the existence of a density for the
distribution of entries. We assume that the entries have a finite moment of
order larger than two and consider the case of sparse matrices. The results are
based on previous work of Bai, Rudelson and the authors extending those results
to a larger class of sparse matrices.
| math.PR math.SP | we consider the joint distribution of real and imaginary parts of eigenvalues of random matrices with independent entries with mean zero and unit variance we prove the convergence of this distribution to the uniform distribution on the unit disc without assumptions on the existence of a density for the distribution of entries we assume that the entries have a finite moment of order larger than two and consider the case of sparse matrices the results are based on previous work of bai rudelson and the authors extending those results to a larger class of sparse matrices | [['we', 'consider', 'the', 'joint', 'distribution', 'of', 'real', 'and', 'imaginary', 'parts', 'of', 'eigenvalues', 'of', 'random', 'matrices', 'with', 'independent', 'entries', 'with', 'mean', 'zero', 'and', 'unit', 'variance', 'we', 'prove', 'the', 'convergence', 'of', 'this', 'distribution', 'to', 'the', 'uniform', 'distribution', 'on', 'the', 'unit', 'disc', 'without', 'assumptions', 'on', 'the', 'existence', 'of', 'a', 'density', 'for', 'the', 'distribution', 'of', 'entries', 'we', 'assume', 'that', 'the', 'entries', 'have', 'a', 'finite', 'moment', 'of', 'order', 'larger', 'than', 'two', 'and', 'consider', 'the', 'case', 'of', 'sparse', 'matrices', 'the', 'results', 'are', 'based', 'on', 'previous', 'work', 'of', 'bai', 'rudelson', 'and', 'the', 'authors', 'extending', 'those', 'results', 'to', 'a', 'larger', 'class', 'of', 'sparse', 'matrices']] | [-0.11980543040165988, 0.0853366925099787, -0.0386615361009414, 0.008396257747032601, -0.044907825688521065, -0.04101755458880992, 0.03613161631013403, 0.3559113946588089, -0.2111343741271412, -0.24677854902256513, 0.1383769745613487, -0.3082871442990533, -0.11600436208148797, 0.13580147585404725, -0.06173214883892797, 0.08379022795998026, 0.047616026420049216, 0.057570475658091404, -0.12482730168994749, -0.2959715033430257, 0.3808398799349864, 0.008468808877902726, 0.24045696487640575, -0.004603155230142875, 0.08946483736508526, 0.03990231662949858, -0.06209163251818003, -0.01398534390803737, -0.0963494368022566, 0.16992881169426255, 0.14631752535448564, 0.101305345621995, 0.286936761578545, -0.40817892834699404, -0.18589148961473256, 0.17901846429352494, 0.11000440731974474, 0.04973264944662029, -0.026615547914843773, -0.25346629927662434, 0.15593847942363936, -0.15645506844157353, -0.13423280234565027, -0.013951765606179833, 0.020889429239711415, 0.08040307745007642, -0.3460450897109695, 0.09828612166650903, 0.11331796299782582, 0.06931912746222224, -0.06460676378022374, -0.23717654153976278, 0.06086322039482184, 0.11472025975429763, 0.067095104001055, -0.040138672814161204, 0.09347426570699706, -0.07120675582700642, -0.08118313087228064, 0.32385285236523487, -0.08374859858743851, -0.2492307004868053, 0.13502467703801813, -0.2273034523241222, -0.1295087748003425, 0.08493337594942811, 0.19166203873464838, 0.1202931722800713, -0.07233419692299019, 0.11757324475668914, -0.12546428297476572, 0.14106987527823853, 0.046462421019289955, 0.0023744526552036405, 0.1265363561687991, 0.055473999222158454, 0.13377447492530337, 0.14234708004611699, -0.07399121169631447, -0.11210356828814838, -0.2857379200286232, -0.13483517700175676, -0.28829549710887176, 0.0697634363217124, -0.1482995304728926, -0.2056461218453478, 0.4316303810822622, 0.14708155657475194, 0.2803414408117533, 0.15039292872340107, 0.2609606862824876, 0.12266855286240268, 0.042990254412870854, 0.08351196450530551, 0.13821225941743856, 0.2092774495637665, 0.0625091322484271, -0.1487911844063395, 0.0883297404119124, 0.05917845868437629] |
709.3996 | On the dynamics of a quadratic scalar field potential | We review the attractor properties of the simplest chaotic model of
inflation, in which a minimally coupled scalar field is endowed with a
quadratic scalar potential. The equations of motion in a flat
Friedmann-Robertson-Walker universe are written as an autonomous system of
equations, and the solutions of physical interest appear as critical points.
This new formalism is then applied to the study of inflation dynamics, in which
we can go beyond the known slow-roll formalism of inflation.
| astro-ph gr-qc | we review the attractor properties of the simplest chaotic model of inflation in which a minimally coupled scalar field is endowed with a quadratic scalar potential the equations of motion in a flat friedmannrobertsonwalker universe are written as an autonomous system of equations and the solutions of physical interest appear as critical points this new formalism is then applied to the study of inflation dynamics in which we can go beyond the known slowroll formalism of inflation | [['we', 'review', 'the', 'attractor', 'properties', 'of', 'the', 'simplest', 'chaotic', 'model', 'of', 'inflation', 'in', 'which', 'a', 'minimally', 'coupled', 'scalar', 'field', 'is', 'endowed', 'with', 'a', 'quadratic', 'scalar', 'potential', 'the', 'equations', 'of', 'motion', 'in', 'a', 'flat', 'friedmannrobertsonwalker', 'universe', 'are', 'written', 'as', 'an', 'autonomous', 'system', 'of', 'equations', 'and', 'the', 'solutions', 'of', 'physical', 'interest', 'appear', 'as', 'critical', 'points', 'this', 'new', 'formalism', 'is', 'then', 'applied', 'to', 'the', 'study', 'of', 'inflation', 'dynamics', 'in', 'which', 'we', 'can', 'go', 'beyond', 'the', 'known', 'slowroll', 'formalism', 'of', 'inflation']] | [-0.18657398475455, 0.13205113946085995, -0.11743751900004488, 0.07548960850592219, -0.07978177968073975, -0.1690739952572077, -0.06728517288317928, 0.24318109840977115, -0.23850260283072272, -0.25853579283794753, 0.07821706946872707, -0.23784407489485554, -0.19567608255167285, 0.15820912593165293, -0.0507731292783827, 0.0502744592278712, -0.012377226654161978, 0.08657432090817624, -0.026177525193757052, -0.2634300494493989, 0.3396462331852549, 0.02115081880822197, 0.1840969000447106, -0.05096143663123057, 0.10660552537044535, -0.07160104462550348, 0.05285736227819285, 0.037178987576686716, -0.15548647559163245, 0.07844782240882323, 0.17447912606997296, 0.12093868360600689, 0.2618447780222088, -0.4323085250889326, -0.25484483175028066, 0.1308464720957102, 0.1713279225597424, 0.15059411239072487, -0.02291067543306521, -0.2842518911249452, 0.03165758438801466, -0.17038326098904158, -0.20124465730283167, -0.09657773815167996, -0.011576786762792859, -0.020795295737659585, -0.2513984292987492, 0.06760605033366131, 0.019193577232419864, 0.015231357572914718, -0.10913839095042317, 0.003977451541509431, -0.04261779738590121, 0.05049516423303005, 0.09628229615257376, 0.030588976612508104, 0.13254618561862933, -0.18862435956146906, -0.09754362920383838, 0.4365770315582102, -0.18088094230632407, -0.21583597056035483, 0.1275136118101609, -0.12498204847313947, -0.13283338583401078, 0.06439263214260436, 0.17505130363483126, 0.1575944468669303, -0.20232127836675612, 0.20744349147032873, 0.03160371549137227, 0.10068085105097913, 0.05436784992381543, 0.017581197088463354, 0.2883286148479039, 0.169473477651353, 0.023853833291244197, 0.147546592543458, 0.027532060267766573, -0.20143029446919242, -0.4153232206409047, -0.13465813338061472, -0.1376556610180573, 0.09111177664123137, -0.12055316201525335, -0.25030619828877126, 0.44482618812229724, 0.15905064346220393, 0.16735396947856848, 0.014327403983439912, 0.2409794426390103, 0.12452667939186386, 0.01938436402902975, 0.047026382045602645, 0.28208283625252834, 0.15711088182235305, 0.1484868936966379, -0.17840460451416573, -0.06639448608432037, 0.056670998059842104] |
709.3997 | Invariant Carnot-Caratheodory metrics on $S^3$, $SO(3)$, $SL(2)$ and
lens spaces | In this paper we study the invariant Carnot-Caratheodory metrics on
$SU(2)\simeq S^3$, $SO(3)$ and $SL(2)$ induced by their Cartan decomposition
and by the Killing form. Beside computing explicitly geodesics and conjugate
loci, we compute the cut loci (globally) and we give the expression of the
Carnot-Caratheodory distance as the inverse of an elementary function. We then
prove that the metric given on $SU(2)$ projects on the so called lens spaces
$L(p,q)$. Also for lens spaces, we compute the cut loci (globally).
For $SU(2)$ the cut locus is a maximal circle without one point. In all other
cases the cut locus is a stratified set. To our knowledge, this is the first
explicit computation of the whole cut locus in sub-Riemannian geometry, except
for the trivial case of the Heisenberg group.
| math.DG math.OC | in this paper we study the invariant carnotcaratheodory metrics on su2simeq s3 so3 and sl2 induced by their cartan decomposition and by the killing form beside computing explicitly geodesics and conjugate loci we compute the cut loci globally and we give the expression of the carnotcaratheodory distance as the inverse of an elementary function we then prove that the metric given on su2 projects on the so called lens spaces lpq also for lens spaces we compute the cut loci globally for su2 the cut locus is a maximal circle without one point in all other cases the cut locus is a stratified set to our knowledge this is the first explicit computation of the whole cut locus in subriemannian geometry except for the trivial case of the heisenberg group | [['in', 'this', 'paper', 'we', 'study', 'the', 'invariant', 'carnotcaratheodory', 'metrics', 'on', 'su2simeq', 's3', 'so3', 'and', 'sl2', 'induced', 'by', 'their', 'cartan', 'decomposition', 'and', 'by', 'the', 'killing', 'form', 'beside', 'computing', 'explicitly', 'geodesics', 'and', 'conjugate', 'loci', 'we', 'compute', 'the', 'cut', 'loci', 'globally', 'and', 'we', 'give', 'the', 'expression', 'of', 'the', 'carnotcaratheodory', 'distance', 'as', 'the', 'inverse', 'of', 'an', 'elementary', 'function', 'we', 'then', 'prove', 'that', 'the', 'metric', 'given', 'on', 'su2', 'projects', 'on', 'the', 'so', 'called', 'lens', 'spaces', 'lpq', 'also', 'for', 'lens', 'spaces', 'we', 'compute', 'the', 'cut', 'loci', 'globally', 'for', 'su2', 'the', 'cut', 'locus', 'is', 'a', 'maximal', 'circle', 'without', 'one', 'point', 'in', 'all', 'other', 'cases', 'the', 'cut', 'locus', 'is', 'a', 'stratified', 'set', 'to', 'our', 'knowledge', 'this', 'is', 'the', 'first', 'explicit', 'computation', 'of', 'the', 'whole', 'cut', 'locus', 'in', 'subriemannian', 'geometry', 'except', 'for', 'the', 'trivial', 'case', 'of', 'the', 'heisenberg', 'group']] | [-0.16778489054982051, 0.03809149834327851, -0.0842550819064671, 0.11068416630953926, -0.13341962659096188, -0.08980865699289613, 0.039561935661671065, 0.3735991102867117, -0.2781642684207637, -0.1970011468637417, 0.12760421670246833, -0.2861627526112016, -0.17435720762239712, 0.17075147414435596, -0.10131606772292023, -0.005953855678987826, 0.03293820692031363, 0.10478572517835585, -0.1305492275968454, -0.2619188945729632, 0.4296880603619931, -0.032129967094276304, 0.2588372939923244, 0.03067032841951117, 0.15549453183676498, 0.041125946540147236, -0.019411313802350397, 0.0016137658206058093, -0.18198195322401606, 0.13432498478290963, 0.2545620761089778, 0.10501865214711531, 0.15846669353010465, -0.32420740581240304, -0.1190682417205932, 0.2049874210289802, 0.16615991371994218, 0.06370131823761288, 0.010772063114406007, -0.2569046008360911, 0.0763886925275257, -0.10010603113576423, -0.1747563904432883, -0.07413881777807377, 0.026156746908704672, -0.014992307483529052, -0.1615924150358106, 0.002877049940203266, 0.08359297682610593, 0.10470376688582722, -0.05550597272380147, -0.09387153505786257, -0.08293653726794345, 0.12410319953896971, 0.03644309877851155, 0.07294707906490207, 0.13431884080186024, -0.08151677245582822, -0.1020321425221059, 0.3604209132983472, -0.04379088097331367, -0.3131197555669287, 0.09809585316142774, -0.15345972948238368, -0.1665745766602399, 0.07092270341362486, 0.12552175861097467, 0.18417897141112607, -0.11318027687280677, 0.18477298629600122, -0.0782116150922077, 0.06152184208058174, 0.098520839359438, -0.05075767451839507, 0.13944479285977607, 0.08044088235514801, 0.16404333491827716, 0.1549381836206479, -0.04848819915674511, -0.0870984004397133, -0.38748239624754405, -0.21000929617561226, -0.1428209521434118, 0.09561932799514643, -0.17293393617999459, -0.2007556980937835, 0.3903804368343089, 0.017620631475579136, 0.21325545379704283, 0.10951557567039895, 0.26907682298256674, 0.05799898818099615, 0.06490180698627707, 0.1170404623118193, 0.19382894284979896, 0.14303295957083614, -0.03304343586859777, -0.19861602836447342, -0.03905294141001176, 0.1991271599188678] |
709.3998 | Face enumeration - from spheres to manifolds | We prove a number of new restrictions on the enumerative properties of
homology manifolds and semi-Eulerian complexes and posets. These include a
determination of the affine span of the fine $h$-vector of balanced
semi-Eulerian complexes and the toric $h$-vector of semi-Eulerian posets.
The lower bounds on simplicial homology manifolds, when combined with higher
dimensional analogues of Walkup's 3-dimensional constructions \cite{Wal}, allow
us to give a complete characterization of the $f$-vectors of arbitrary
simplicial triangulations of $S^1 \times S^3, \C P^2,$ $ K3$ surfaces, and
$(S^2 \times S^2) # (S^2 \times S^2).$ We also establish a principle which
leads to a conjecture for homology manifolds which is almost logically
equivalent to the $g$-conjecture for homology spheres. Lastly, we show that
with sufficiently many vertices, every triangulable homology manifold without
boundary of dimension three or greater can be triangulated in a 2-neighborly
fashion.
| math.CO math.GT | we prove a number of new restrictions on the enumerative properties of homology manifolds and semieulerian complexes and posets these include a determination of the affine span of the fine hvector of balanced semieulerian complexes and the toric hvector of semieulerian posets the lower bounds on simplicial homology manifolds when combined with higher dimensional analogues of walkups 3dimensional constructions citewal allow us to give a complete characterization of the fvectors of arbitrary simplicial triangulations of s1 times s3 c p2 k3 surfaces and s2 times s2 s2 times s2 we also establish a principle which leads to a conjecture for homology manifolds which is almost logically equivalent to the gconjecture for homology spheres lastly we show that with sufficiently many vertices every triangulable homology manifold without boundary of dimension three or greater can be triangulated in a 2neighborly fashion | [['we', 'prove', 'a', 'number', 'of', 'new', 'restrictions', 'on', 'the', 'enumerative', 'properties', 'of', 'homology', 'manifolds', 'and', 'semieulerian', 'complexes', 'and', 'posets', 'these', 'include', 'a', 'determination', 'of', 'the', 'affine', 'span', 'of', 'the', 'fine', 'hvector', 'of', 'balanced', 'semieulerian', 'complexes', 'and', 'the', 'toric', 'hvector', 'of', 'semieulerian', 'posets', 'the', 'lower', 'bounds', 'on', 'simplicial', 'homology', 'manifolds', 'when', 'combined', 'with', 'higher', 'dimensional', 'analogues', 'of', 'walkups', '3dimensional', 'constructions', 'citewal', 'allow', 'us', 'to', 'give', 'a', 'complete', 'characterization', 'of', 'the', 'fvectors', 'of', 'arbitrary', 'simplicial', 'triangulations', 'of', 's1', 'times', 's3', 'c', 'p2', 'k3', 'surfaces', 'and', 's2', 'times', 's2', 's2', 'times', 's2', 'we', 'also', 'establish', 'a', 'principle', 'which', 'leads', 'to', 'a', 'conjecture', 'for', 'homology', 'manifolds', 'which', 'is', 'almost', 'logically', 'equivalent', 'to', 'the', 'gconjecture', 'for', 'homology', 'spheres', 'lastly', 'we', 'show', 'that', 'with', 'sufficiently', 'many', 'vertices', 'every', 'triangulable', 'homology', 'manifold', 'without', 'boundary', 'of', 'dimension', 'three', 'or', 'greater', 'can', 'be', 'triangulated', 'in', 'a', '2neighborly', 'fashion']] | [-0.20810092026890809, 0.06017012554693265, -0.06316925633185799, 0.103914499307301, -0.0655971061559799, -0.17996656076739664, -0.021990909589542265, 0.3563017250592078, -0.2601672361361916, -0.24262095258092048, 0.1437493507991599, -0.22461039695253535, -0.13847774038246521, 0.1663474420176657, -0.18258159219935213, -0.04604055467939031, 0.09161123008791196, 0.0681011203079201, -0.1093944185748747, -0.3379298452898671, 0.37624037781716796, -0.059135329389971666, 0.15339679565226685, 0.13890841055620948, 0.11719811248485053, -0.018383329715647236, 0.02148682742204139, 0.05278140633785422, -0.2633920720042058, 0.1830962805374377, 0.2691831496287731, 0.04790189499845323, 0.08423467004077806, -0.4193134071477065, -0.1384281096963104, 0.2070534041799281, 0.11283191102826833, 0.030082210754989173, 0.05923249481070409, -0.25476962837485084, 0.08764158014505022, -0.11375914928773283, -0.16847708894857677, -0.08183157620816559, 0.07484454378836612, 0.016256629381382812, -0.21597967733480578, -0.019508617587827914, 0.12234957234097132, 0.11422265453965984, -0.055367754347136484, -0.11423036086278548, -0.11004437114436018, 0.08277955199984084, -0.045742916293354516, 0.06164991202999574, 0.0729130745930361, -0.050856730280508564, -0.1882498965335443, 0.37223733729088976, -0.032169093288045944, -0.25469690072350204, 0.13759921677410603, -0.17643371515272968, -0.22213278932199962, 0.2123201351403596, 0.052773415347210306, 0.19992111830135295, 0.017815204473373487, 0.1557345161386563, -0.11783457949902673, 0.09663104214722398, 0.15171261533311958, 0.03262217051646524, 0.14803391741251276, 0.09748075015870752, 0.17810308710550485, 0.1492763155172039, -0.009274028683675157, -0.052130622823007296, -0.2843310992921824, -0.22934319850975188, -0.10962585203579046, 0.21617421559800487, -0.21674196783788974, -0.18222604523180053, 0.3281534082337242, 0.012089543045832492, 0.20107921038963494, 0.19431057552624817, 0.22118264946924604, -0.05018884644074285, 0.054568097360627864, 0.051590248054919255, 0.0759200736478754, 0.23792694372705359, -0.04847538860285304, -0.07460356828506928, -0.04835427565959053, 0.2584822911033542] |
709.3999 | Automatically reduced degenerations of automatically normal varieties | Let F be a flat family of projective schemes, whose geometric generic fiber
is reduced and irreducible. We give conditions on a special fiber (a "limit" of
the family) to guarantee that it too is reduced. These conditions often imply
also that the generic fiber is normal. The conditions are particularly easy to
check in the setup of a "geometric vertex decomposition" [Knutson-Miller-Yong
'07].
The primary tool used is the corresponding limit _branchvariety_
[Alexeev-Knutson '06], which is reduced by construction, and maps to the limit
subscheme; our technique is to use normality to show that the branchvariety map
must be an isomorphism.
As a demonstration, we give an essentially naive proof that Schubert
varieties in finite type are normal and Cohen-Macaulay. The proof does not
involve any resolution of singularities or cohomology-vanishing techniques
(e.g. appeal to characteristic p).
| math.AG | let f be a flat family of projective schemes whose geometric generic fiber is reduced and irreducible we give conditions on a special fiber a limit of the family to guarantee that it too is reduced these conditions often imply also that the generic fiber is normal the conditions are particularly easy to check in the setup of a geometric vertex decomposition knutsonmilleryong 07 the primary tool used is the corresponding limit _branchvariety_ alexeevknutson 06 which is reduced by construction and maps to the limit subscheme our technique is to use normality to show that the branchvariety map must be an isomorphism as a demonstration we give an essentially naive proof that schubert varieties in finite type are normal and cohenmacaulay the proof does not involve any resolution of singularities or cohomologyvanishing techniques eg appeal to characteristic p | [['let', 'f', 'be', 'a', 'flat', 'family', 'of', 'projective', 'schemes', 'whose', 'geometric', 'generic', 'fiber', 'is', 'reduced', 'and', 'irreducible', 'we', 'give', 'conditions', 'on', 'a', 'special', 'fiber', 'a', 'limit', 'of', 'the', 'family', 'to', 'guarantee', 'that', 'it', 'too', 'is', 'reduced', 'these', 'conditions', 'often', 'imply', 'also', 'that', 'the', 'generic', 'fiber', 'is', 'normal', 'the', 'conditions', 'are', 'particularly', 'easy', 'to', 'check', 'in', 'the', 'setup', 'of', 'a', 'geometric', 'vertex', 'decomposition', 'knutsonmilleryong', '07', 'the', 'primary', 'tool', 'used', 'is', 'the', 'corresponding', 'limit', '_branchvariety_', 'alexeevknutson', '06', 'which', 'is', 'reduced', 'by', 'construction', 'and', 'maps', 'to', 'the', 'limit', 'subscheme', 'our', 'technique', 'is', 'to', 'use', 'normality', 'to', 'show', 'that', 'the', 'branchvariety', 'map', 'must', 'be', 'an', 'isomorphism', 'as', 'a', 'demonstration', 'we', 'give', 'an', 'essentially', 'naive', 'proof', 'that', 'schubert', 'varieties', 'in', 'finite', 'type', 'are', 'normal', 'and', 'cohenmacaulay', 'the', 'proof', 'does', 'not', 'involve', 'any', 'resolution', 'of', 'singularities', 'or', 'cohomologyvanishing', 'techniques', 'eg', 'appeal', 'to', 'characteristic', 'p']] | [-0.12783800606804907, 0.05718335723858922, -0.1481177723455362, 0.05201301677327575, -0.10657025538770047, -0.17958470009253324, -0.0030021570173015158, 0.35724787502304506, -0.292194247021711, -0.2207125364023758, 0.1526946031372063, -0.19751479682736658, -0.14043300655404373, 0.23055920687406078, -0.16158013863320975, -0.014508044725297986, 0.07541752222722355, 0.0438231917945458, -0.08682774159273035, -0.275244567568652, 0.3505177207053044, -0.003877725207099789, 0.29893328684305115, 0.055484082957701686, 0.11778338016465978, -0.002740787314181041, 0.019263358895239748, 0.017740953515399303, -0.1537937285263473, 0.09574952526403156, 0.29948776516419157, 0.11311248107988359, 0.20141138620954707, -0.36836194405962425, -0.1414399617506958, 0.19761645703583508, 0.14097507422843764, 0.09108890798485565, 0.030184513510246865, -0.21119244214623495, 0.14854452758327238, -0.14880306483071326, -0.1958249768109194, -0.10592398112219639, 0.004160515624413589, 0.008565913787797877, -0.2886765662132573, -0.024055785823594147, 0.1436225018863167, 0.09296361128694582, 0.014116315347933792, -0.06011365619453048, -0.03668676359277863, 0.061506276857458, -0.02911122029479173, 0.042966718410835006, 0.10324970371907409, -0.0856614009953363, -0.06400131349472847, 0.38173218588502306, -0.055441950882007755, -0.2368396421040135, 0.18504594654524067, -0.1212565160734593, -0.1126039514258588, 0.16346602525327467, 0.08197721140109059, 0.13294585115270588, -0.08133422537825834, 0.1201579683890069, -0.06593785216485647, 0.12335211249362481, 0.07105153724831298, 0.022538589530701477, 0.1458161589146865, 0.09214303048705696, 0.11260150434253247, 0.10105268376935414, -0.032206540736474824, -0.026389422777451967, -0.36877499536884234, -0.16997454798263079, -0.16333495804521822, 0.13262180333330797, -0.10979823730993207, -0.19183736753867084, 0.35512296341209065, 0.08572526045031566, 0.20942667068185328, 0.0758950306020355, 0.2587891456853122, 0.11184273848548196, 0.07151697301550915, 0.025693965095438455, 0.1886978358173869, 0.18793480909653568, -0.004401026820567877, -0.13702441054777964, 0.0469765641439454, 0.13998522989879034] |
709.4 | Strangeness -2 and -3 Baryons in a Constituent Quark Model | We apply a quark model developed in earlier work to the spectrum of baryons
with strangeness -2 and -3. The model describes a number of well-established
baryons successfully, and application to cascade baryons allows the quantum
numbers of some known states to be deduced.
| nucl-th hep-ex hep-ph | we apply a quark model developed in earlier work to the spectrum of baryons with strangeness 2 and 3 the model describes a number of wellestablished baryons successfully and application to cascade baryons allows the quantum numbers of some known states to be deduced | [['we', 'apply', 'a', 'quark', 'model', 'developed', 'in', 'earlier', 'work', 'to', 'the', 'spectrum', 'of', 'baryons', 'with', 'strangeness', '2', 'and', '3', 'the', 'model', 'describes', 'a', 'number', 'of', 'wellestablished', 'baryons', 'successfully', 'and', 'application', 'to', 'cascade', 'baryons', 'allows', 'the', 'quantum', 'numbers', 'of', 'some', 'known', 'states', 'to', 'be', 'deduced']] | [-0.0652039998888292, 0.17503866948060354, -0.11687468466433612, 0.12415546974675222, -0.0420156966640868, -0.11381925805471838, 0.061570772747720846, 0.2734608869491653, -0.19246863475365733, -0.3469500139630823, -0.01789799946709536, -0.27303384162455174, -0.06001072956926443, 0.1234210060634227, 0.024608848701146515, 0.11663659725507552, -0.012233652036891064, 0.06644723295572806, 0.02287129946688021, -0.2337863704782318, 0.34494934176010167, 0.010872407612623647, 0.1909502146088264, 0.10787146284498951, 0.0434570355467837, -0.02285174649759111, -0.031272884902798316, 0.003737952560186386, -0.11420211517675356, 0.10231014372204134, 0.19836557674914895, 0.11668490305204283, 0.1799861934268847, -0.4094944355840033, -0.2135779608242129, 0.12136448761289516, 0.17237545967906376, 0.21533324133435433, -0.035950646227733654, -0.266667809210379, 0.11797133555889806, -0.24821699101647193, -0.1990011463111097, -0.11735969487662343, -0.011942227773199027, 0.012631467162546787, -0.26315355965528975, 0.06758727981518446, 0.020779733710117976, -0.010946643983267924, -0.04026668063835876, -0.18593003134116193, -0.005816933317956599, 0.08132910053245723, 0.05231586597669362, 0.058458576243455435, 0.12136558177669278, -0.13700480949641627, -0.16402785691686653, 0.4074384470639581, -0.05443854335780171, -0.16509299920025197, 0.155032895590094, -0.14157007415302691, -0.16555133574134248, 0.0685375226365233, 0.16754484769295563, 0.07087661693168973, -0.12038902439896694, 0.06979038341722282, -0.06941452707079324, 0.21261833096981386, 0.02146766116757962, 0.015591117765077135, 0.1634195192177272, 0.1532641148660332, -0.06978113405321809, 0.12157514595839364, -0.05501330254430121, -0.10256245046515357, -0.28081795149906114, -0.14267984580841253, -0.15516305714845657, 0.05426629768176512, -0.005830303236011373, -0.08911908798935739, 0.4475061525167389, 0.13484832426448437, 0.26565271571532567, 0.04534829877295785, 0.3040225383063609, 0.062238587024198336, 0.05547587204174223, 0.0995688765860078, 0.21365951576643222, 0.27624018265950406, 0.13655021418394012, -0.19665157312357967, -0.04808128378565677, 0.0686471405100416] |
709.4001 | Effect of Rb and Cs-doping on superconducting properties of MgB2 thin
films | Our Rutherford backscattering spectrometry (RBS) study has found that
concentrations up to 7 atomic percent of Rb and Cs can be introduced to a depth
of ~700 A in MgB2 thin films by annealing in quartz ampoules containing
elemental alkali metals at <350 degree centigrade. No significant change in
transition temperature (Tc) was observed, in contrast to an earlier report of
very high Tc (>50 K) for similar experiments on MgB2 powders. The lack of a
significant change in Tc and intra-granular carrier scattering suggests that Rb
and Cs diffuse into the film, but do not enter the grains. Instead, the
observed changes in the electrical properties, including a significant drop in
Jc and an increase in delta rho (rho300-rho40), arise from a decrease in
inter-granular connectivity due to segregation of the heavy alkaline metals and
other impurities (i.e. C and O) introduced into the grain boundary regions
during the anneals.
| cond-mat.supr-con | our rutherford backscattering spectrometry rbs study has found that concentrations up to 7 atomic percent of rb and cs can be introduced to a depth of 700 a in mgb2 thin films by annealing in quartz ampoules containing elemental alkali metals at 350 degree centigrade no significant change in transition temperature tc was observed in contrast to an earlier report of very high tc 50 k for similar experiments on mgb2 powders the lack of a significant change in tc and intragranular carrier scattering suggests that rb and cs diffuse into the film but do not enter the grains instead the observed changes in the electrical properties including a significant drop in jc and an increase in delta rho rho300rho40 arise from a decrease in intergranular connectivity due to segregation of the heavy alkaline metals and other impurities ie c and o introduced into the grain boundary regions during the anneals | [['our', 'rutherford', 'backscattering', 'spectrometry', 'rbs', 'study', 'has', 'found', 'that', 'concentrations', 'up', 'to', '7', 'atomic', 'percent', 'of', 'rb', 'and', 'cs', 'can', 'be', 'introduced', 'to', 'a', 'depth', 'of', '700', 'a', 'in', 'mgb2', 'thin', 'films', 'by', 'annealing', 'in', 'quartz', 'ampoules', 'containing', 'elemental', 'alkali', 'metals', 'at', '350', 'degree', 'centigrade', 'no', 'significant', 'change', 'in', 'transition', 'temperature', 'tc', 'was', 'observed', 'in', 'contrast', 'to', 'an', 'earlier', 'report', 'of', 'very', 'high', 'tc', '50', 'k', 'for', 'similar', 'experiments', 'on', 'mgb2', 'powders', 'the', 'lack', 'of', 'a', 'significant', 'change', 'in', 'tc', 'and', 'intragranular', 'carrier', 'scattering', 'suggests', 'that', 'rb', 'and', 'cs', 'diffuse', 'into', 'the', 'film', 'but', 'do', 'not', 'enter', 'the', 'grains', 'instead', 'the', 'observed', 'changes', 'in', 'the', 'electrical', 'properties', 'including', 'a', 'significant', 'drop', 'in', 'jc', 'and', 'an', 'increase', 'in', 'delta', 'rho', 'rho300rho40', 'arise', 'from', 'a', 'decrease', 'in', 'intergranular', 'connectivity', 'due', 'to', 'segregation', 'of', 'the', 'heavy', 'alkaline', 'metals', 'and', 'other', 'impurities', 'ie', 'c', 'and', 'o', 'introduced', 'into', 'the', 'grain', 'boundary', 'regions', 'during', 'the', 'anneals']] | [-0.06349767326377333, 0.23771110290059974, -0.005408687312155962, -0.05056542005981707, 0.03206447539074967, -0.1378797353276362, 0.14036440889816731, 0.40454263259967166, -0.22574790580198167, -0.3473039486507575, 0.00529995904226477, -0.34338577355568606, -0.05049213364254683, 0.14543908259443317, -0.04087191870125632, -0.0018849822133779526, -0.022418615768353144, -0.037051000768939656, -0.10314394845006367, -0.2289378667351169, 0.20866774358786644, 0.06384488064543499, 0.31620142911250393, 0.1258322199321507, 0.0009191768988966942, -0.0694503112634023, 0.052257762178536116, 0.03794407858202855, -0.11464734056392141, 0.03379734336675028, 0.27407266905531286, -0.04951728343653182, 0.17153285960666836, -0.4708255106365929, -0.26461183654765286, 0.04217864048822473, 0.14607113918599984, 0.08437646191567183, -0.09708067175621787, -0.22775914021457236, 0.08018334148218856, -0.10015848620571584, -0.10724946610939999, -0.009249580557613324, 0.038089452718074124, -0.03247990389199307, -0.23645054710796104, 0.10275357008446008, 0.05372166888788343, 0.16027840956424674, -0.09726458489429206, -0.1820168881677091, -0.05869688394324233, 0.000351357360680898, 0.029915536666909853, 0.05704057596468677, 0.22504896473760405, -0.10906309963514407, -0.0013748237397521734, 0.36907677148779233, -0.09906319902666534, 0.0010707143073280653, 0.22133965238307912, -0.19487259512767197, -0.0896117323047171, 0.24583055309718474, 0.1305185448168777, 0.09345385133909682, -0.1438824182127913, 0.04626295788912103, -0.01721829527290538, 0.2198120284274531, 0.13637920280142377, 0.021058069022838025, 0.18078428719968845, 0.1685137236615022, -0.003864949439400031, 0.11877434482215904, -0.14685763170632224, 0.026879145338510473, -0.1636404994300877, -0.22390737330541013, -0.1316160523557725, 0.04492229528113967, -0.09584867675730493, -0.16843462212748514, 0.3163212890426318, 0.13173777022399008, 0.24522579675229886, -0.08982511394036313, 0.20008105068777998, 0.05851832436164841, 0.13377789401837314, 0.04666960815899074, 0.26046126746882997, 0.1707419074156011, 0.17214539287000663, -0.27080082971369845, 0.1525789798485736, -0.04702125961426645] |
709.4002 | Single-electron latch with granular film charge leakage suppressor | A single-electron latch is a device that can be used as a building block for
Quantum-dot Cellular Automata (QCA) circuits. It consists of three nanoscale
metal "dots" connected in series by tunnel junctions; charging of the dots is
controlled by three electrostatic gates. One very important feature of a
single-electron latch is its ability to store ("latch") information represented
by the location of a single electron within the three dots. To obtain latching,
the undesired leakage of charge during the retention time must be suppressed.
Previously, to achieve this goal, multiple tunnel junctions were used to
connect the three dots. However, this method of charge leakage suppression
requires an additional compensation of the background charges affecting each
parasitic dot in the array of junctions. We report a single-electron latch
where a granular metal film is used to fabricate the middle dot in the latch
which concurrently acts as a charge leakage suppressor. This latch has no
parasitic dots, therefore the background charge compensation procedure is
greatly simplified. We discuss the origins of charge leakage suppression and
possible applications of granular metal dots for various single-electron
circuits.
| cond-mat.mes-hall cond-mat.dis-nn | a singleelectron latch is a device that can be used as a building block for quantumdot cellular automata qca circuits it consists of three nanoscale metal dots connected in series by tunnel junctions charging of the dots is controlled by three electrostatic gates one very important feature of a singleelectron latch is its ability to store latch information represented by the location of a single electron within the three dots to obtain latching the undesired leakage of charge during the retention time must be suppressed previously to achieve this goal multiple tunnel junctions were used to connect the three dots however this method of charge leakage suppression requires an additional compensation of the background charges affecting each parasitic dot in the array of junctions we report a singleelectron latch where a granular metal film is used to fabricate the middle dot in the latch which concurrently acts as a charge leakage suppressor this latch has no parasitic dots therefore the background charge compensation procedure is greatly simplified we discuss the origins of charge leakage suppression and possible applications of granular metal dots for various singleelectron circuits | [['a', 'singleelectron', 'latch', 'is', 'a', 'device', 'that', 'can', 'be', 'used', 'as', 'a', 'building', 'block', 'for', 'quantumdot', 'cellular', 'automata', 'qca', 'circuits', 'it', 'consists', 'of', 'three', 'nanoscale', 'metal', 'dots', 'connected', 'in', 'series', 'by', 'tunnel', 'junctions', 'charging', 'of', 'the', 'dots', 'is', 'controlled', 'by', 'three', 'electrostatic', 'gates', 'one', 'very', 'important', 'feature', 'of', 'a', 'singleelectron', 'latch', 'is', 'its', 'ability', 'to', 'store', 'latch', 'information', 'represented', 'by', 'the', 'location', 'of', 'a', 'single', 'electron', 'within', 'the', 'three', 'dots', 'to', 'obtain', 'latching', 'the', 'undesired', 'leakage', 'of', 'charge', 'during', 'the', 'retention', 'time', 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709.4003 | Physicochemical influences on electrohydrodynamic transport in
compressible packed beds of colloidal boehmite particles | Production and processing of colloidal particles require a deeper
understanding of surface charge of particles and interaction of mass and charge
transport in packed beds. The assessment of fundamental parameters is rather
complex due to the additional influence of the particle charge on the structure
of a packed bed. The combination of different measurement techniques (streaming
potential and electroosmosis) allows for separating the effects, based on the
postulation of a new method to quantify the ratio of surface conductance to
liquid conductance. The purpose of this paper is to investigate the influence
of the pH value and compression on the electrohydrodynamic transport
parameters.
| cond-mat.soft | production and processing of colloidal particles require a deeper understanding of surface charge of particles and interaction of mass and charge transport in packed beds the assessment of fundamental parameters is rather complex due to the additional influence of the particle charge on the structure of a packed bed the combination of different measurement techniques streaming potential and electroosmosis allows for separating the effects based on the postulation of a new method to quantify the ratio of surface conductance to liquid conductance the purpose of this paper is to investigate the influence of the ph value and compression on the electrohydrodynamic transport parameters | [['production', 'and', 'processing', 'of', 'colloidal', 'particles', 'require', 'a', 'deeper', 'understanding', 'of', 'surface', 'charge', 'of', 'particles', 'and', 'interaction', 'of', 'mass', 'and', 'charge', 'transport', 'in', 'packed', 'beds', 'the', 'assessment', 'of', 'fundamental', 'parameters', 'is', 'rather', 'complex', 'due', 'to', 'the', 'additional', 'influence', 'of', 'the', 'particle', 'charge', 'on', 'the', 'structure', 'of', 'a', 'packed', 'bed', 'the', 'combination', 'of', 'different', 'measurement', 'techniques', 'streaming', 'potential', 'and', 'electroosmosis', 'allows', 'for', 'separating', 'the', 'effects', 'based', 'on', 'the', 'postulation', 'of', 'a', 'new', 'method', 'to', 'quantify', 'the', 'ratio', 'of', 'surface', 'conductance', 'to', 'liquid', 'conductance', 'the', 'purpose', 'of', 'this', 'paper', 'is', 'to', 'investigate', 'the', 'influence', 'of', 'the', 'ph', 'value', 'and', 'compression', 'on', 'the', 'electrohydrodynamic', 'transport', 'parameters']] | [-0.12991282740637244, 0.1623778138038458, -0.09670705125820868, 0.004340546473508104, -0.027636349797972196, -0.0909678404653463, 0.05290520114448934, 0.29347909914637077, -0.26382687635430435, -0.3416704654793065, 0.04560534137830102, -0.26612487496614334, -0.11707576027465533, 0.18508446676480286, -0.025494337515923584, 0.07089861688538662, 0.026669380526302508, 0.004541423293825203, -0.05304527506955619, -0.1748033632881469, 0.3157650430288925, 0.08474826008913297, 0.30551442091615455, 0.15978181597243235, 0.087012348551918, 0.039553281516560075, -0.0266162157482558, 0.05255623062331121, -0.17405075074435727, 0.1378900770107013, 0.1546110642211539, 0.02634392228899795, 0.21858725789708347, -0.46862072468671984, -0.21721349498347461, 0.05998971423776187, 0.11331830316593924, 0.09453240248546438, -0.07259683563369462, -0.21613545610922055, 0.04538947387679833, -0.12574000352116538, -0.1018251218353805, -0.038174485444154554, 0.024975454730876874, 0.03988446426341645, -0.26578611740220826, 0.09052378123680364, 0.041260424580931376, 0.05007386797342847, -0.08285183023980104, -0.10049659773273376, -0.03833230760500052, 0.12866120638994916, 0.06558292749500608, -0.0056050000486226334, 0.2524732426351425, -0.18200708084595074, -0.05990068398831973, 0.4188611463833492, -0.03519133003247739, -0.2126086472129015, 0.23223386715093935, -0.14404968789878111, -0.06291214641617629, 0.15097959812513542, 0.2447658380475438, 0.08628777124313186, -0.15783007806946875, 0.02880718026624414, 0.006592730792619071, 0.17957134153106186, 0.0571292325971847, 0.02094091910832715, 0.25622623847815595, 0.25880647224636333, 0.05055939258772482, 0.12659340714854958, -0.1413994492235078, -0.08397881766708876, -0.2376886650160389, -0.22685092463366036, -0.1667966698511115, 0.029629761411907894, -0.07917338194146423, -0.21303710933702374, 0.4286362528891384, 0.16269037707989076, 0.1908243587421416, -0.02260132616801748, 0.297249556003699, 0.06426593477304265, 0.05439094594652647, 0.0017934471382352623, 0.23831722568336294, 0.169140602647354, 0.10055550033660623, -0.2886110873501838, 0.07465228048668614, 0.04369538351079648] |
709.4004 | Muon internal bremsstrahlung: a conventional explanation for the excess
electron-neutrino events in MiniBoone | We show that the rate of charged-current muon-neutrino events with a hard
internal bremsstrahlung photon is consistent with the excess electron-neutrino
candidate events reported by the MiniBoone and LSND (decay in flight)
experiments. Hard photons radiated by the muon leg in charged-current neutrino
interactions (neutrino-Nucleon->muon+gamma+nucleon) are a significant source of
background that should be considered by current and future muon-neutrino to
electron-neutrino neutrino oscillations appearance experiments (e.g. LSND,
MiniBoone, SuperK, MINOS, T2K and NOVA).
| hep-ex nucl-ex | we show that the rate of chargedcurrent muonneutrino events with a hard internal bremsstrahlung photon is consistent with the excess electronneutrino candidate events reported by the miniboone and lsnd decay in flight experiments hard photons radiated by the muon leg in chargedcurrent neutrino interactions neutrinonucleonmuongammanucleon are a significant source of background that should be considered by current and future muonneutrino to electronneutrino neutrino oscillations appearance experiments eg lsnd miniboone superk minos t2k and nova | [['we', 'show', 'that', 'the', 'rate', 'of', 'chargedcurrent', 'muonneutrino', 'events', 'with', 'a', 'hard', 'internal', 'bremsstrahlung', 'photon', 'is', 'consistent', 'with', 'the', 'excess', 'electronneutrino', 'candidate', 'events', 'reported', 'by', 'the', 'miniboone', 'and', 'lsnd', 'decay', 'in', 'flight', 'experiments', 'hard', 'photons', 'radiated', 'by', 'the', 'muon', 'leg', 'in', 'chargedcurrent', 'neutrino', 'interactions', 'neutrinonucleonmuongammanucleon', 'are', 'a', 'significant', 'source', 'of', 'background', 'that', 'should', 'be', 'considered', 'by', 'current', 'and', 'future', 'muonneutrino', 'to', 'electronneutrino', 'neutrino', 'oscillations', 'appearance', 'experiments', 'eg', 'lsnd', 'miniboone', 'superk', 'minos', 't2k', 'and', 'nova']] | [-0.035826376754127136, 0.31779403937342643, 0.04028915370009936, 0.24221237133454837, -0.08885495351908142, -0.12466435133135073, 0.0761590184618349, 0.3445971424959294, -0.1297867853857883, -0.3319479654517586, -0.03096850800060042, -0.5043742848585729, 0.015384626664119223, 0.2030205415842468, 0.04276123285622094, 0.11248365278062347, 0.20443626295468986, -0.03365316680849415, -0.03879884468417053, -0.20950579926473636, 0.16813114731993578, 0.22557428903392937, 0.25815601863783516, 0.113018601093033, 0.11217687993903631, -0.016192528018919267, -0.1088684592140864, -0.10842760055236621, -0.015412080343270495, -0.037143657481527495, 0.26811457673814915, 0.13250195317162514, -0.04955441213838042, -0.4609590830179314, -0.17020038792174563, 0.19422165544269837, 0.1406700416403896, -0.012288629255984744, -0.09369363099949, -0.4374213835403119, 0.013086632234586582, -0.25554338648711167, -0.09328879923113201, 0.004605327123674016, -0.05222262035136762, -0.015936121886774693, -0.30122279235455274, 0.1359841470121827, -0.024309699567136904, -0.036772468050763216, -0.05046901935456346, -0.15694485693748988, 0.05794562572894031, 0.005761130942567571, 0.24370682444614805, 0.04316152933640533, 0.16801524841009755, -0.15127711356553722, -0.24181883402921464, 0.31161884644566334, -0.07811303243474806, -0.09537688702702114, 0.09855701556996992, -0.2591771894542832, -0.047838333490215344, 0.2515973707482423, 0.13294321146780905, -0.031335957772545005, -0.25516972424181766, 0.006195883863854337, -0.08239777231818601, 0.17213797966043834, 0.1172210478035682, -0.028912557914138656, 0.2875826311463567, 0.2822736330738623, 0.08799625975271202, -0.058797359582968056, -0.2968746646218104, 0.06867980967237525, -0.4484726483231946, -0.025041626173084322, -0.011366938814929086, 0.10859405334914511, 0.05437325542750417, -0.06594771017920073, 0.3466690723618416, 0.08891663487365929, 0.2464938456167097, -0.09763966003203228, 0.34100093018926986, 0.004706329283342786, 0.031829794715732745, -0.033271509343885806, 0.3880927613744997, 0.07729983989353457, 0.19400952503480628, -0.3173180906618754, 0.09707099169952003, 0.02773715627749693] |
709.4005 | Gravitational lensing | This is a short and biased review of gravitational lensing with emphasis on
the radio and especially VLBI aspects. We briefly explain the basic idea and
give a short sketch of the discovery of the first lens, before we more
systematically discuss the general fields that can be studied with lensing. We
intentionally omit the details the average lensing expert would like to see and
instead try to give a very general overview addressed to the radio astronomer
working in some other field. The lens B0218+357 is presented as an example to
show many aspects of lensing in a case that already has led to interesting
results but still has additional potential for the future.
| astro-ph | this is a short and biased review of gravitational lensing with emphasis on the radio and especially vlbi aspects we briefly explain the basic idea and give a short sketch of the discovery of the first lens before we more systematically discuss the general fields that can be studied with lensing we intentionally omit the details the average lensing expert would like to see and instead try to give a very general overview addressed to the radio astronomer working in some other field the lens b0218357 is presented as an example to show many aspects of lensing in a case that already has led to interesting results but still has additional potential for the future | [['this', 'is', 'a', 'short', 'and', 'biased', 'review', 'of', 'gravitational', 'lensing', 'with', 'emphasis', 'on', 'the', 'radio', 'and', 'especially', 'vlbi', 'aspects', 'we', 'briefly', 'explain', 'the', 'basic', 'idea', 'and', 'give', 'a', 'short', 'sketch', 'of', 'the', 'discovery', 'of', 'the', 'first', 'lens', 'before', 'we', 'more', 'systematically', 'discuss', 'the', 'general', 'fields', 'that', 'can', 'be', 'studied', 'with', 'lensing', 'we', 'intentionally', 'omit', 'the', 'details', 'the', 'average', 'lensing', 'expert', 'would', 'like', 'to', 'see', 'and', 'instead', 'try', 'to', 'give', 'a', 'very', 'general', 'overview', 'addressed', 'to', 'the', 'radio', 'astronomer', 'working', 'in', 'some', 'other', 'field', 'the', 'lens', 'b0218357', 'is', 'presented', 'as', 'an', 'example', 'to', 'show', 'many', 'aspects', 'of', 'lensing', 'in', 'a', 'case', 'that', 'already', 'has', 'led', 'to', 'interesting', 'results', 'but', 'still', 'has', 'additional', 'potential', 'for', 'the', 'future']] | [-0.10219517951203591, 0.05707830969742803, -0.09827880179104598, 0.134582009673645, -0.1707821113685065, -0.13638104961769978, -0.008024885456847108, 0.40153804557478945, -0.19872385535551154, -0.2978573484305778, 0.1501658706176702, -0.24943448581084934, -0.18241319180992635, 0.2310630181885284, -0.07836412589025238, -0.022544677668939465, 0.061466831560044184, 0.03660724880578725, -0.05639541972752499, -0.2967290868010858, 0.3067613483447096, 0.11851932976556862, 0.19429435683819263, 0.07618854296110246, 0.07111558192915729, 0.007167616158561862, -0.11209324723028619, 0.05754145982310824, -0.13612276248104932, 0.10147731546565647, 0.24975023839784705, 0.14979659455655012, 0.2600181961553576, -0.41725226854500563, -0.20648993283672176, 0.06735451340513385, 0.13317618863252195, 0.15706159383863333, -0.1072986948421559, -0.3021743181505767, 0.08165032255979579, -0.1796260731861643, -0.1572397414516435, -0.036304695318761765, 0.038550122605596225, 0.05704821441090842, -0.17538807265784429, -0.003037521154012369, 0.06693505630860075, 0.029174641220142013, -0.025272622081937025, -0.10836993111651795, 0.07771560492236977, 0.10594626407584419, 0.07437294589193619, 0.047918511456911166, 0.09646867513251693, -0.16250021159446434, -0.07888155991373502, 0.424837660651816, -0.042145261207959896, -0.1296496823268092, 0.19748863649918982, -0.16009925909988257, -0.21759653382975122, 0.03424436166558577, 0.1626473339315018, 0.061503637312789974, -0.1634149767498931, 0.054382800608468444, -0.0018907491036731265, 0.17665393465886944, 0.05443162711580162, 0.06164343080017716, 0.2592489689264608, 0.15321356960288857, 0.07011033726360082, 0.14752012251258786, -0.10906286999056844, -0.030069710451947607, -0.29551183855889934, -0.11557874458477549, -0.12463860490723797, 0.10807337300932926, -0.024496858930923855, -0.12566079739126904, 0.40791914082415726, 0.1904332581381111, 0.19919851221468138, 0.02101451768463923, 0.31626816530833424, 0.06826804748371891, 0.04574349378843023, 0.007643889388798372, 0.33193534036981875, 0.11002692089456578, 0.1332312256178778, -0.13296804170569648, 0.03531818769305296, -0.0010448150174773257] |
709.4006 | The VERITAS standard data analysis | VERITAS is an array of Imaging Atmospheric Cherenkov Telescopes designed for
very high energy gamma ray (E>100,GeV) observations of astrophysical sources.
The experiment began its scientific observation program in the 2006/2007
observing season. We describe here the analysis chain for reducing the data,
reconstructing the direction and energy of incident gamma rays and the
rejection of background cosmic rays.
| astro-ph | veritas is an array of imaging atmospheric cherenkov telescopes designed for very high energy gamma ray e100gev observations of astrophysical sources the experiment began its scientific observation program in the 20062007 observing season we describe here the analysis chain for reducing the data reconstructing the direction and energy of incident gamma rays and the rejection of background cosmic rays | [['veritas', 'is', 'an', 'array', 'of', 'imaging', 'atmospheric', 'cherenkov', 'telescopes', 'designed', 'for', 'very', 'high', 'energy', 'gamma', 'ray', 'e100gev', 'observations', 'of', 'astrophysical', 'sources', 'the', 'experiment', 'began', 'its', 'scientific', 'observation', 'program', 'in', 'the', '20062007', 'observing', 'season', 'we', 'describe', 'here', 'the', 'analysis', 'chain', 'for', 'reducing', 'the', 'data', 'reconstructing', 'the', 'direction', 'and', 'energy', 'of', 'incident', 'gamma', 'rays', 'and', 'the', 'rejection', 'of', 'background', 'cosmic', 'rays']] | [-0.11290042972492086, 0.24414973194790823, -0.053289371491330915, 0.13376094480794934, -0.11279579012070672, -0.04309413736780821, 0.003349285667478028, 0.4193963162853556, -0.21697183011713342, -0.42306559362401397, 0.08610995904092629, -0.3635167036900076, 0.007463719411674193, 0.263513275564222, 0.03020727060640515, 0.02176969466727006, 0.21134458788496963, -0.10054607849599699, 0.04055016260530989, -0.1835351287055824, 0.19823412852701178, 0.3390421841482995, 0.24475145634753093, 0.01745117258406797, 0.16870249987982402, 0.029780424697229923, -0.16798606920608525, -0.08639552090632713, -0.1112974794518392, 0.05540203604200002, 0.31631850975297265, 0.21681900364859819, 0.10555882496222602, -0.38080781562474825, -0.231695140569897, 0.1514570682577915, 0.06683646851235021, -0.03611415965577303, -0.07062827934653072, -0.32567845456996714, -0.02568572358686035, -0.10649691479501583, -0.19257899979129434, 0.09108281084652042, -0.03509065773637997, 0.045191151950255797, -0.17363152917379798, -0.05039381542069427, -0.030704861980373577, 0.07175275786203664, -0.10900501210353006, -0.11507015403802112, 0.050696332086572204, 0.08321822797721726, 0.09384748170357514, 0.03733187391406904, 0.1191336862995463, -0.1894897852819097, -0.07601576936983709, 0.35188024274026186, -0.06629975206194982, -0.016739808496529774, 0.13905021043936328, -0.23581634498185525, -0.2056310852689637, 0.25792596606001006, 0.19589690966689485, 0.07956782162536756, -0.18043581200605732, 0.12579424041362827, 0.051040817273117725, 0.14819085947632538, 0.1067079940802907, -0.01804210708113545, 0.2463350351268457, 0.21042981191333068, 0.1313315289010199, 0.08817185053278266, -0.34645374829612546, 0.08271365769018056, -0.31928181187328647, -0.13817709929534724, -0.20504879696941855, 0.10197287791811119, -0.05625172676587619, -0.09799654883533811, 0.43966279968114225, 0.07685568283256343, 0.08215612902353375, -0.014101275140261752, 0.3020937625097774, 0.01603789596771032, -0.033749411127261694, 0.02156800742782021, 0.32914411245008646, 0.11351078852687536, 0.18374247828466914, -0.22314545148352194, 0.0282339053780977, -0.05139482872939463] |
709.4007 | Effect of stoichiometry on oxygen incorporation in MgB2 thin films | The amount of oxygen incorporated into MgB2 thin films upon exposure to
atmospheric gasses is found to depend strongly on the material's stoichiometry.
Rutherford backscattering spectroscopy was used to monitor changes in oxygen
incorporation resulting from exposure to: (a) ambient atmosphere, (b) humid
atmospheres, (c) anneals in air and (d) anneals in oxygen. The study
investigated thin-film samples with compositions that were systematically
varied from Mg0.9B2 to Mg1.1B2. A significant surface oxygen contamination was
observed in all of these films. The oxygen content in the bulk of the film, on
the other hand, increased significantly only in Mg rich films and in films
exposed to humid atmospheres.
| cond-mat.supr-con | the amount of oxygen incorporated into mgb2 thin films upon exposure to atmospheric gasses is found to depend strongly on the materials stoichiometry rutherford backscattering spectroscopy was used to monitor changes in oxygen incorporation resulting from exposure to a ambient atmosphere b humid atmospheres c anneals in air and d anneals in oxygen the study investigated thinfilm samples with compositions that were systematically varied from mg09b2 to mg11b2 a significant surface oxygen contamination was observed in all of these films the oxygen content in the bulk of the film on the other hand increased significantly only in mg rich films and in films exposed to humid atmospheres | [['the', 'amount', 'of', 'oxygen', 'incorporated', 'into', 'mgb2', 'thin', 'films', 'upon', 'exposure', 'to', 'atmospheric', 'gasses', 'is', 'found', 'to', 'depend', 'strongly', 'on', 'the', 'materials', 'stoichiometry', 'rutherford', 'backscattering', 'spectroscopy', 'was', 'used', 'to', 'monitor', 'changes', 'in', 'oxygen', 'incorporation', 'resulting', 'from', 'exposure', 'to', 'a', 'ambient', 'atmosphere', 'b', 'humid', 'atmospheres', 'c', 'anneals', 'in', 'air', 'and', 'd', 'anneals', 'in', 'oxygen', 'the', 'study', 'investigated', 'thinfilm', 'samples', 'with', 'compositions', 'that', 'were', 'systematically', 'varied', 'from', 'mg09b2', 'to', 'mg11b2', 'a', 'significant', 'surface', 'oxygen', 'contamination', 'was', 'observed', 'in', 'all', 'of', 'these', 'films', 'the', 'oxygen', 'content', 'in', 'the', 'bulk', 'of', 'the', 'film', 'on', 'the', 'other', 'hand', 'increased', 'significantly', 'only', 'in', 'mg', 'rich', 'films', 'and', 'in', 'films', 'exposed', 'to', 'humid', 'atmospheres']] | [-0.017645900323987006, 0.21891420146539098, -0.004455294483341277, -0.02449249145907483, 0.040840646025857755, -0.1018761099715318, 0.12384009956648308, 0.4611474614767801, -0.23201511121754134, -0.3569212511181831, 0.04073573798495567, -0.3444849521986076, -0.03658668748103082, 0.1766226650969613, -0.08754266625314597, -0.004052097146354971, -0.0045640426820942335, -0.11991834227173101, -0.07662347290620562, -0.270272294290009, 0.23523100775976977, 0.08960081303403492, 0.32462733633638846, 0.08852284064161636, -0.030061699281490984, -0.058380527195653745, 0.031436818004364056, 0.03730551417961362, -0.17396382636957458, 0.06321731127661354, 0.2632123492658138, -0.050231003539548034, 0.11809733542835428, -0.536380487990876, -0.3005588966554829, -0.009171618024508159, 0.09467922184793721, 0.0801604978651518, -0.09934252609853589, -0.2316863989014001, 0.04190585382304908, -0.07954365278904636, -0.09149165378351297, 0.02189931823328758, -0.0005632107101735614, -0.025423667635325164, -0.23157086304799165, 0.007579935031632582, 0.011467242090120202, 0.14521128059852692, -0.15489271124824883, -0.17612127170321487, -0.1935076264742141, 0.06916842510302862, 0.08476573154773741, 0.009667141030409507, 0.2872946166034256, -0.0890292713418603, 0.0861660212721853, 0.3640818855414788, -0.1121872602163681, -0.048543543630235254, 0.2538902620829287, -0.21386489379441453, -0.07335889802447387, 0.2577622483351401, 0.17951104465339865, 0.12919982292999824, -0.2109951396339706, 0.04686819879404668, 0.012520085833966733, 0.2520710554328703, 0.1268443177675917, -0.0008978652701314006, 0.1681176672711791, 0.19615701022557913, 0.015125441414836262, 0.12259107208200952, -0.12578941747280104, 0.05989742243130292, -0.10671796051652303, -0.23146683408745697, -0.11179952201145213, 0.060009830345266635, -0.04736771108998385, -0.20058255495858335, 0.33037832882255314, 0.1356872876390948, 0.1214343273879162, -0.14949243421932415, 0.220365805711065, -0.01111006894137799, 0.08674028796044045, -0.016496556691293206, 0.2544600713909382, 0.18102158592526046, 0.152946395824048, -0.2807740545055519, 0.2135329712603596, -0.03875941423078378] |
709.4008 | System Size, Energy and Centrality Dependence of Pseudorapidity
Distributions of Charged Particles in Relativistic Heavy Ion Collisions | We present the first measurements of the pseudorapidity distribution of
primary charged particles in Cu+Cu collisions as a function of collision
centrality and energy, \sqrtsnn = 22.4, 62.4 and 200 GeV, over a wide range of
pseudorapidity, using the PHOBOS detector. Making a global comparison of Cu+Cu
and Au+Au results, we find that the total number of produced charged particles
and the rough shape (height and width) of the pseudorapidity distributions are
determined by the number of nucleon participants. More detailed studies reveal
that a more precise matching of the shape of the Cu+Cu and Au+Au pseudorapidity
distributions over the full range of pseudorapidity occurs for the same
Npart/2A value rather than the same Npart value. In other words, it is the
collision geometry rather than just the number of nucleon participants that
drives the detailed shape of the pseudorapidity distribution and its centrality
dependence at RHIC energies.
| nucl-ex | we present the first measurements of the pseudorapidity distribution of primary charged particles in cucu collisions as a function of collision centrality and energy sqrtsnn 224 624 and 200 gev over a wide range of pseudorapidity using the phobos detector making a global comparison of cucu and auau results we find that the total number of produced charged particles and the rough shape height and width of the pseudorapidity distributions are determined by the number of nucleon participants more detailed studies reveal that a more precise matching of the shape of the cucu and auau pseudorapidity distributions over the full range of pseudorapidity occurs for the same npart2a value rather than the same npart value in other words it is the collision geometry rather than just the number of nucleon participants that drives the detailed shape of the pseudorapidity distribution and its centrality dependence at rhic energies | [['we', 'present', 'the', 'first', 'measurements', 'of', 'the', 'pseudorapidity', 'distribution', 'of', 'primary', 'charged', 'particles', 'in', 'cucu', 'collisions', 'as', 'a', 'function', 'of', 'collision', 'centrality', 'and', 'energy', 'sqrtsnn', '224', '624', 'and', '200', 'gev', 'over', 'a', 'wide', 'range', 'of', 'pseudorapidity', 'using', 'the', 'phobos', 'detector', 'making', 'a', 'global', 'comparison', 'of', 'cucu', 'and', 'auau', 'results', 'we', 'find', 'that', 'the', 'total', 'number', 'of', 'produced', 'charged', 'particles', 'and', 'the', 'rough', 'shape', 'height', 'and', 'width', 'of', 'the', 'pseudorapidity', 'distributions', 'are', 'determined', 'by', 'the', 'number', 'of', 'nucleon', 'participants', 'more', 'detailed', 'studies', 'reveal', 'that', 'a', 'more', 'precise', 'matching', 'of', 'the', 'shape', 'of', 'the', 'cucu', 'and', 'auau', 'pseudorapidity', 'distributions', 'over', 'the', 'full', 'range', 'of', 'pseudorapidity', 'occurs', 'for', 'the', 'same', 'npart2a', 'value', 'rather', 'than', 'the', 'same', 'npart', 'value', 'in', 'other', 'words', 'it', 'is', 'the', 'collision', 'geometry', 'rather', 'than', 'just', 'the', 'number', 'of', 'nucleon', 'participants', 'that', 'drives', 'the', 'detailed', 'shape', 'of', 'the', 'pseudorapidity', 'distribution', 'and', 'its', 'centrality', 'dependence', 'at', 'rhic', 'energies']] | [-0.09243288292543171, 0.21394807687794712, -0.16791495283721142, 0.09535232775490604, 0.023923810647979174, -0.05406401932003512, -0.07408261181282721, 0.36682423415963783, -0.181939438655207, -0.3889178122068462, -0.10639944519649885, -0.36284256136453114, 0.10538444181342851, 0.17282627533988912, 0.06608598091645958, 0.09625923035043206, 0.14274649748782794, 0.053830850166141066, -0.0930144793867478, -0.15843339601613554, 0.2792970709971548, 0.12836631354301759, 0.215918562848644, 0.17429049076410394, 0.058378673968709084, 0.1414133419146385, -0.025687288409992032, 0.05306630619252994, -0.1760814995655917, 0.08506656411500195, 0.24531064692494772, 0.058308184740120825, 0.2099947729785863, -0.2994829682020904, -0.13263976228924163, 0.14460427355506036, 0.12618196632853415, 0.0009075234331547805, -0.059071103867808394, -0.2633056815662613, 0.13332092868920084, -0.2528670101955992, -0.12913928314491674, 0.024028237947352128, 0.05231733859057398, 0.11036395205006208, -0.2651198696239839, 0.19566341442867718, -0.02447175283155608, 0.12472002771491669, -0.0547163013268377, -0.2163240235388177, -0.11118462994656436, 0.056763500756622384, 0.08865114590248782, 0.05623529547401258, 0.22519436031452392, -0.15688964903230257, -0.1164685034445066, 0.3731100550942021, 0.07772887136036856, -0.14141907233944997, 0.16954057348241441, -0.260081836274404, -0.07123373514870564, 0.1826008959029074, 0.25038038343446306, 0.148242967241533, -0.1923891152574183, -0.018330939138014736, -0.0922683397314371, 0.2392608415884004, 0.14776052038619064, 0.0570803450082416, 0.1392012732422413, 0.1913209109158855, 0.055494892327210624, 0.07840037282256486, -0.16746945841890148, -0.12351276512474638, -0.3828467253901779, -0.10546350670174683, -0.14440102078186426, 0.0018238818347900596, -0.13705028220941393, -0.07022459963209009, 0.4508207406823153, 0.1089551285681098, 0.3232757792527443, 0.042105948029417695, 0.24962428936811343, 0.05364252686698296, 0.05744931015524095, 0.10496408231109891, 0.2510332289879044, 0.13614230108294278, 0.24904562026255905, -0.18216275533961054, 0.0591636864653444, 0.016533199378786837] |
709.4009 | Summary of studies of the eta meson production with polarized proton
beam at COSY-11 | We report on the COSY-11 measurements of the analysing power for the p(pol)p
--> ppeta reaction and interpret the results in the framework of the meson
exchange models.
| nucl-ex | we report on the cosy11 measurements of the analysing power for the ppolp ppeta reaction and interpret the results in the framework of the meson exchange models | [['we', 'report', 'on', 'the', 'cosy11', 'measurements', 'of', 'the', 'analysing', 'power', 'for', 'the', 'ppolp', 'ppeta', 'reaction', 'and', 'interpret', 'the', 'results', 'in', 'the', 'framework', 'of', 'the', 'meson', 'exchange', 'models']] | [-0.08343046220640342, 0.09067584803603866, -0.10912709415101239, 0.05819697443533827, 0.038757266718204376, -0.04285975649125046, 0.08317365007544006, 0.3046488008565373, -0.19877695595776593, -0.27537374784825025, -0.001988955881205146, -0.35698441540201503, -0.0543780904263258, 0.221341031431048, 0.08761578191209722, 0.08058487872282664, 0.08510201677886976, 0.0416943302585019, -0.017724815500615578, -0.15369255064676204, 0.3463429969356016, 0.1130017352687126, 0.25348886585345975, 0.15803906994147432, 0.06822219915274116, 0.056250324507278425, -0.14109980264954544, -0.06599929018153085, -0.16068056529318844, 0.1379816806530235, 0.21892452261292622, 0.10587712989568158, 0.11838694510084612, -0.39334865907828015, -0.16109482247244428, 0.0615149421479415, 0.06745428174596142, 0.10951794656338515, -0.0521696781679229, -0.2804080510029086, 0.08804510657986005, -0.20738933832143192, -0.06095375186177315, -0.08839509925908512, -0.03803998435399047, 0.038988256482062514, -0.30330050902234185, 0.07000927702972183, -0.017300226070262766, 0.11633808662494023, -0.17158446924898912, -0.18023974069014745, 0.0105455475859344, 0.09544984223666014, 0.06296072931339343, 0.0029174193310879033, 0.1457892417114366, -0.1528623681881948, -0.17072352015033918, 0.3697244411127435, -0.09333049015279997, -0.12992559566541953, 0.1005310596967185, -0.18934004429589818, -0.1843450648917092, 0.039500442919907744, 0.24847095042329143, 0.11641712776488727, -0.18503237312176712, 0.07757504491126854, -0.013120939265246745, 0.15161194314283352, 0.013522474578133336, -0.012471684737613908, 0.10220825934299717, 0.20269992974742004, -0.09944891764058007, 0.0928942037280649, -0.15114694891531985, -0.07995304023777997, -0.31806071402712, -0.1433196666960915, -0.08725857168987945, 0.043875450613322084, -0.05516687221771227, -0.020941727139331675, 0.41739989403221345, 0.10262769088149071, 0.27528042325543034, 0.02521631765153466, 0.34859831451817797, 0.11626945363133456, 0.037036487798172014, 0.03158689617972683, 0.3126332561864897, 0.1873174289724341, 0.19389775811039187, -0.306879130433555, 0.09714362911742043, -0.009515659021282638] |
709.401 | Local search heuristics: Fitness Cloud versus Fitness Landscape | This paper introduces the concept of fitness cloud as an alternative way to
visualize and analyze search spaces than given by the geographic notion of
fitness landscape. It is argued that the fitness cloud concept overcomes
several deficiencies of the landscape representation. Our analysis is based on
the correlation between fitness of solutions and fitnesses of nearest solutions
according to some neighboring. We focus on the behavior of local search
heuristics, such as hill climber, on the well-known NK fitness landscape. In
both cases the fitness vs. fitness correlation is shown to be related to the
epistatic parameter K.
| cs.AI | this paper introduces the concept of fitness cloud as an alternative way to visualize and analyze search spaces than given by the geographic notion of fitness landscape it is argued that the fitness cloud concept overcomes several deficiencies of the landscape representation our analysis is based on the correlation between fitness of solutions and fitnesses of nearest solutions according to some neighboring we focus on the behavior of local search heuristics such as hill climber on the wellknown nk fitness landscape in both cases the fitness vs fitness correlation is shown to be related to the epistatic parameter k | [['this', 'paper', 'introduces', 'the', 'concept', 'of', 'fitness', 'cloud', 'as', 'an', 'alternative', 'way', 'to', 'visualize', 'and', 'analyze', 'search', 'spaces', 'than', 'given', 'by', 'the', 'geographic', 'notion', 'of', 'fitness', 'landscape', 'it', 'is', 'argued', 'that', 'the', 'fitness', 'cloud', 'concept', 'overcomes', 'several', 'deficiencies', 'of', 'the', 'landscape', 'representation', 'our', 'analysis', 'is', 'based', 'on', 'the', 'correlation', 'between', 'fitness', 'of', 'solutions', 'and', 'fitnesses', 'of', 'nearest', 'solutions', 'according', 'to', 'some', 'neighboring', 'we', 'focus', 'on', 'the', 'behavior', 'of', 'local', 'search', 'heuristics', 'such', 'as', 'hill', 'climber', 'on', 'the', 'wellknown', 'nk', 'fitness', 'landscape', 'in', 'both', 'cases', 'the', 'fitness', 'vs', 'fitness', 'correlation', 'is', 'shown', 'to', 'be', 'related', 'to', 'the', 'epistatic', 'parameter', 'k']] | [-0.08804847358613077, 0.0568949590977152, -0.1198873355551952, 0.13386839096942407, -0.06250053488019139, -0.13029965837344978, 0.08516564745234909, 0.3695118329440705, -0.2864967926141966, -0.3018620548807461, 0.026638738330067933, -0.27270192107317426, -0.23977048549156713, 0.12907486689286402, -0.09081435270344067, -0.008148002899204842, 0.0074942911024948565, 0.03241505968676071, 0.03315912495894038, -0.27441848759925125, 0.35384066763446864, 0.08646361026536635, 0.2955694999075448, 0.047600684908566754, 0.0663350069355349, -0.0007075300026271078, -0.0455003705139112, 0.044016503103983896, -0.1687277780985842, 0.14813956748129745, 0.2192620745474341, 0.2230759440601399, 0.3673558296598118, -0.34205107934622453, -0.18399840445437637, 0.1754252996032286, 0.17517164669404126, 0.09392673223081863, -0.025579304548422572, -0.2671518541044659, 0.036524427810100596, -0.12222815072399122, -0.09024217316052979, -0.08524226467477891, 0.035917141757002384, 0.08351867071898522, -0.22133008375613375, 0.0454980099686619, -0.006571121626731121, 0.08113982866170129, -0.06889851964690318, -0.16307441723730529, -0.04896952324744427, 0.09929286702677156, 0.0878362479033462, 0.0440048520791937, 0.16081588753414425, -0.12132788118859282, -0.12737364794075903, 0.3618660860064656, -0.015711022962638498, -0.21455946547035692, 0.2285471822798365, -0.09063871977662649, -0.08666524345600846, 0.06548992745728806, 0.14866940702565692, 0.09795397183284013, -0.16962606429752677, 0.06851174638987603, 0.006316760978238149, 0.13436595637426532, 0.06343795020471919, 0.040631815889906706, 0.17179092063069945, 0.19089695835730644, 0.16259327467714407, 0.1392226694045927, -0.08133938606837858, -0.21776158458757863, -0.21803927850895422, -0.1416531655363588, -0.21591957455331628, -0.006865861829172707, -0.11624221951492611, -0.19439430763525184, 0.43214331732855904, 0.17530370593033354, 0.22492441903762142, 0.10579386166287492, 0.23572595853998204, 0.07116298116343754, 0.08314075305907413, 0.01804945751027477, 0.16371375902919238, 0.03174811591173174, 0.08934095793055614, -0.24935051860438304, 0.1435830541768798, 0.08731146283080858] |
709.4011 | Measuring the Evolvability Landscape to study Neutrality | This theoretical work defines the measure of autocorrelation of evolvability
in the context of neutral fitness landscape. This measure has been studied on
the classical MAX-SAT problem. This work highlight a new characteristic of
neutral fitness landscapes which allows to design new adapted metaheuristic.
| cs.AI | this theoretical work defines the measure of autocorrelation of evolvability in the context of neutral fitness landscape this measure has been studied on the classical maxsat problem this work highlight a new characteristic of neutral fitness landscapes which allows to design new adapted metaheuristic | [['this', 'theoretical', 'work', 'defines', 'the', 'measure', 'of', 'autocorrelation', 'of', 'evolvability', 'in', 'the', 'context', 'of', 'neutral', 'fitness', 'landscape', 'this', 'measure', 'has', 'been', 'studied', 'on', 'the', 'classical', 'maxsat', 'problem', 'this', 'work', 'highlight', 'a', 'new', 'characteristic', 'of', 'neutral', 'fitness', 'landscapes', 'which', 'allows', 'to', 'design', 'new', 'adapted', 'metaheuristic']] | [-0.07222101301886141, 0.053934765069491485, -0.14559177165343004, 0.10217868185612712, -0.0759768903424794, -0.16187849855685438, 0.043769987003708426, 0.3462346540763974, -0.29193465117449785, -0.29122492721812293, -0.01955776157873598, -0.1762498747613625, -0.21028608771633694, 0.13942020155743443, -0.12668209851042114, 0.08337060514498841, 0.016605300913480194, -0.030581809098789978, 0.012742425103417852, -0.26333201383452187, 0.31991112062876875, 0.0975608378648758, 0.3162203934043646, 0.07320823279124769, 0.07456442013128915, -0.018055699289437722, -0.0712768598459661, 0.04349849572066556, -0.23473820940654894, 0.19701600309607867, 0.2305179832672531, 0.23351346389708025, 0.3825328949500214, -0.3367656641639769, -0.23714280665973836, 0.19729007145559246, 0.17341351073065941, 0.12275621875728988, -0.09381328460982662, -0.2657482522878457, 0.018164488254114985, -0.10791093412659723, -0.10636901212009517, -0.06697218911722302, 0.025017395604994486, 0.026413056745447895, -0.19683724684132772, 0.021899459915320305, 0.019219508860260248, 0.08591404829745773, -0.06381820484239142, -0.1587279546921226, 0.044341065772724425, 0.066448840175078, 0.06881466685180468, 0.04913195786701346, 0.16552186796484006, -0.09007510685213757, -0.19659561411985618, 0.34697049466723745, -0.06956782117909328, -0.18950876491990956, 0.2057387999534099, -0.09888559799980033, -0.17249271307479253, 0.10142795893956315, 0.21180311148054898, 0.13297362490133804, -0.229059007442133, 0.12713245533152737, -0.07679803144525398, 0.1136597618248991, 0.034785573471295225, 0.024283339068378238, 0.1809543275951662, 0.263412920250134, 0.13315672776661813, 0.1697279349900782, -0.02963017650604756, -0.16157547100870448, -0.19179388711398299, -0.2084892469204285, -0.1790931002998894, 0.05793413457682949, -0.02450355671515519, -0.20834856484593314, 0.49949278513138945, 0.18949976532100912, 0.1645371037620035, 0.10536509441391734, 0.25877965619491244, 0.09997965342534537, 0.053170363180635664, -0.06568859875286845, 0.20039924269605597, 0.08980362163327466, 0.1509588796391406, -0.2487933188676834, 0.1268273716030473, 0.03181560615881939] |
709.4012 | Seismic Risk Scenario in Grenoble (FRANCE) Using Experimental Dynamic
Properties of Buildings | Assessing the vulnerability of a large set of buildings using sophisticated
methods can be very time consuming and at a prohibitive cost, particularly for
a moderate seismic hazard country like France. We propose here a low-cost
analysis using an experimental approach to extract the elastic behaviour of
existing buildings. An elastic modal model is proposed for the different types
of building tested in Grenoble (France) thanks to their experimental modal
parameters (resonance frequencies, modal shapes and damping), which are
estimated using ambient vibrations surveys. Sixty buildings of various types
were recorded. The building integrity is then calculated considering an
accelerogram scenario provided by seismologists as input and considering an
integrity threshold based on the FEMA inter-storey drift limits. Even if the
level of damage remains unknown, we conclude that masonry buildings undergo
more damage (70% of buildings damaged) than RC buildings. Finally, extracting
modal parameters from ambient vibration recordings allows us to define, for
each class of building, its ability to support seismic deformation in case of
earthquake.
| physics.geo-ph physics.class-ph | assessing the vulnerability of a large set of buildings using sophisticated methods can be very time consuming and at a prohibitive cost particularly for a moderate seismic hazard country like france we propose here a lowcost analysis using an experimental approach to extract the elastic behaviour of existing buildings an elastic modal model is proposed for the different types of building tested in grenoble france thanks to their experimental modal parameters resonance frequencies modal shapes and damping which are estimated using ambient vibrations surveys sixty buildings of various types were recorded the building integrity is then calculated considering an accelerogram scenario provided by seismologists as input and considering an integrity threshold based on the fema interstorey drift limits even if the level of damage remains unknown we conclude that masonry buildings undergo more damage 70 of buildings damaged than rc buildings finally extracting modal parameters from ambient vibration recordings allows us to define for each class of building its ability to support seismic deformation in case of earthquake | [['assessing', 'the', 'vulnerability', 'of', 'a', 'large', 'set', 'of', 'buildings', 'using', 'sophisticated', 'methods', 'can', 'be', 'very', 'time', 'consuming', 'and', 'at', 'a', 'prohibitive', 'cost', 'particularly', 'for', 'a', 'moderate', 'seismic', 'hazard', 'country', 'like', 'france', 'we', 'propose', 'here', 'a', 'lowcost', 'analysis', 'using', 'an', 'experimental', 'approach', 'to', 'extract', 'the', 'elastic', 'behaviour', 'of', 'existing', 'buildings', 'an', 'elastic', 'modal', 'model', 'is', 'proposed', 'for', 'the', 'different', 'types', 'of', 'building', 'tested', 'in', 'grenoble', 'france', 'thanks', 'to', 'their', 'experimental', 'modal', 'parameters', 'resonance', 'frequencies', 'modal', 'shapes', 'and', 'damping', 'which', 'are', 'estimated', 'using', 'ambient', 'vibrations', 'surveys', 'sixty', 'buildings', 'of', 'various', 'types', 'were', 'recorded', 'the', 'building', 'integrity', 'is', 'then', 'calculated', 'considering', 'an', 'accelerogram', 'scenario', 'provided', 'by', 'seismologists', 'as', 'input', 'and', 'considering', 'an', 'integrity', 'threshold', 'based', 'on', 'the', 'fema', 'interstorey', 'drift', 'limits', 'even', 'if', 'the', 'level', 'of', 'damage', 'remains', 'unknown', 'we', 'conclude', 'that', 'masonry', 'buildings', 'undergo', 'more', 'damage', '70', 'of', 'buildings', 'damaged', 'than', 'rc', 'buildings', 'finally', 'extracting', 'modal', 'parameters', 'from', 'ambient', 'vibration', 'recordings', 'allows', 'us', 'to', 'define', 'for', 'each', 'class', 'of', 'building', 'its', 'ability', 'to', 'support', 'seismic', 'deformation', 'in', 'case', 'of', 'earthquake']] | [-0.06830248583183474, 0.11041645476807879, -0.06783129707882236, 0.058224835403787784, -0.10030197087831483, -0.11341728668514929, 0.05467876242083347, 0.37113480273254973, -0.2217259501433976, -0.2960430347712008, 0.15820684614570388, -0.27228597077984756, -0.12896199307814352, 0.25560256373834334, -0.10869880599906658, 0.07317336638211301, 0.045757778564016305, 0.005383042133452293, -0.006384809352638769, -0.19793955343747568, 0.2511839132406052, 0.108638906873718, 0.33380966383579025, 0.01971620174046762, 0.09485139107208944, 0.010420877606542447, -0.034128007250363954, 0.0150425850252013, -0.09522031874467882, 0.14074851186879114, 0.3138427665961828, 0.13485886826888174, 0.2550477766303602, -0.48491564676901716, -0.22455351993850778, 0.09397746665355496, 0.06410721127244624, 0.0987048723454682, 0.022357864604693346, -0.2817868013813266, 0.08255043464383768, -0.21146512889821908, -0.1419833044794773, -0.08145177844370866, 0.02135193570026247, 0.005630405112253335, -0.24958697049516046, 0.0421531538264324, 0.006185918313055159, 0.15309749554820404, -0.09181786357936823, -0.1266667544074959, -0.028200591665491864, 0.16729644939308974, 0.02595865571087862, -0.06510355325138982, 0.20700135246800358, -0.09321064618276712, -0.06498447254169062, 0.40204226804484505, -0.012375412866543605, -0.16192204757554535, 0.1976630086515623, -0.10036966349360739, -0.10055416040289812, 0.11024167888636092, 0.21602450903717005, 0.05716615389059381, -0.17796624417578477, 0.013187775747016808, 0.040250913960814566, 0.16474872260789447, 0.14323759055835847, -0.017795100707412994, 0.17294325604811758, 0.24443563963091391, 0.03845014711277292, 0.1501143474970431, -0.1486028484647402, 0.005999877245143101, -0.2598304426043802, -0.0785582832529204, -0.15747655874597813, -0.003693110204976565, -0.08727177441467651, -0.16910770264716296, 0.36862817077624227, 0.1636457649076324, 0.17317150994468883, 0.06614409118659326, 0.30974620923505886, 0.05674704289892312, 0.08008253858926634, 0.0394435356786575, 0.20985403635767763, 0.07722964085370837, 0.08466657510161132, -0.17382685967698738, 0.09957012927025824, -0.002672319346481187] |
709.4013 | Studying New Physics Amplitudes in Charmless B_s Decays | A method based on flavour SU(3) is proposed for identifying and extracting
New Physics (NP) amplitudes in charmless $\Delta S=1$ $B_s$ decays using
time-dependent CP asymmetries in these decays and in flavour SU(3) related
$\Delta S=0$ decays. For illustration, we assume a hierarchy, $\sim 1: \lambda
: \lambda^2$ ($\lambda=0.2$), between a dominant $\Delta S=1$ penguin
amplitude, a NP amplitude and a Standard Model amplitude with weak phase
$\gamma$. An uncertainty from SU(3) breaking corrections, reduced by using
ratios of hadronic amplitudes, is further suppressed by a factor $\lambda$. We
discuss examples for pairs of decays into two neutral vector mesons,
$B_s\to\phi\phi, B_s\to\phi \bar K^{*0}$ and $B_s\to K^{*0}\bar K^{*0}, B^0\to
K^{*0}\bar K^{*0}$, where the magnitude of the NP amplitude, its weak and
strong phases can be determined.
| hep-ph hep-ex | a method based on flavour su3 is proposed for identifying and extracting new physics np amplitudes in charmless delta s1 b_s decays using timedependent cp asymmetries in these decays and in flavour su3 related delta s0 decays for illustration we assume a hierarchy sim 1 lambda lambda2 lambda02 between a dominant delta s1 penguin amplitude a np amplitude and a standard model amplitude with weak phase gamma an uncertainty from su3 breaking corrections reduced by using ratios of hadronic amplitudes is further suppressed by a factor lambda we discuss examples for pairs of decays into two neutral vector mesons b_stophiphi b_stophi bar k0 and b_sto k0bar k0 b0to k0bar k0 where the magnitude of the np amplitude its weak and strong phases can be determined | [['a', 'method', 'based', 'on', 'flavour', 'su3', 'is', 'proposed', 'for', 'identifying', 'and', 'extracting', 'new', 'physics', 'np', 'amplitudes', 'in', 'charmless', 'delta', 's1', 'b_s', 'decays', 'using', 'timedependent', 'cp', 'asymmetries', 'in', 'these', 'decays', 'and', 'in', 'flavour', 'su3', 'related', 'delta', 's0', 'decays', 'for', 'illustration', 'we', 'assume', 'a', 'hierarchy', 'sim', '1', 'lambda', 'lambda2', 'lambda02', 'between', 'a', 'dominant', 'delta', 's1', 'penguin', 'amplitude', 'a', 'np', 'amplitude', 'and', 'a', 'standard', 'model', 'amplitude', 'with', 'weak', 'phase', 'gamma', 'an', 'uncertainty', 'from', 'su3', 'breaking', 'corrections', 'reduced', 'by', 'using', 'ratios', 'of', 'hadronic', 'amplitudes', 'is', 'further', 'suppressed', 'by', 'a', 'factor', 'lambda', 'we', 'discuss', 'examples', 'for', 'pairs', 'of', 'decays', 'into', 'two', 'neutral', 'vector', 'mesons', 'b_stophiphi', 'b_stophi', 'bar', 'k0', 'and', 'b_sto', 'k0bar', 'k0', 'b0to', 'k0bar', 'k0', 'where', 'the', 'magnitude', 'of', 'the', 'np', 'amplitude', 'its', 'weak', 'and', 'strong', 'phases', 'can', 'be', 'determined']] | [-0.1418514814629121, 0.277907240618237, -0.034733576306361494, 0.1531638257542428, -0.058855949389952714, -0.17855202620924732, 0.0964536536030653, 0.285059742073006, -0.23214850917731117, -0.17956613158670867, -0.03747345087576536, -0.3281810355251579, -0.012101767777760581, 0.11415335781137814, 0.13599783600860738, 0.051460831440754265, 0.04691564943641424, -0.009109638362547488, -0.11181310853519576, -0.12660810874199602, 0.24620513053898646, -0.1181383326392227, 0.15971612024151274, 0.0866817470783807, -0.07122037664237546, -0.027635655131160727, -0.060816215315258236, -0.03421403920444531, -0.18950994367942184, -0.006638520954714376, 0.18393445732374866, 0.10699767739809217, 0.07175199710574698, -0.3152943223835976, -0.05658631881592962, 0.2013207002489911, 0.19707803266895255, 0.08068737912377934, 0.008000195968131407, -0.4006389962562277, 0.1283932349046435, -0.14431342533676, -0.07936505618982198, -0.1037796207900515, 0.10832304274284743, -0.12271506991237402, -0.39742111911376315, 0.16097741550576639, -0.04609116885387074, 0.03763959759456386, 0.05850781382125901, -0.27542776235841154, 0.012467763730233944, -0.008717644774180845, 0.13396862182080957, 0.14349990989255712, 0.12421898144804608, -0.16139368865093806, -0.146519369033082, 0.42781764828804425, -0.1225655086592173, -0.19399122347581063, 0.06207818575619864, -0.1764452554290495, -0.1797482456398628, 0.1653664751883172, 0.1932549241824242, 0.04500118444287559, -0.142076535672858, 0.19213080590702517, 0.02136702951217994, 0.21607537202658209, 0.09381468535771942, 0.07588625996661319, 0.17326125700137487, 0.1836649722427251, -0.035954148951554445, 0.032297316369812604, -0.08997563813714599, -0.028644341958414126, -0.4071677880952271, -0.07723280337518006, -0.029506288135681694, 0.12279317704809269, -0.12356691554553591, -0.05960774186211146, 0.3604161083145537, -0.005750505076683452, 0.25889406045065905, -0.002761813115358837, 0.29402588221729103, 0.12642597332142474, 0.01662311280180314, 0.06609222533681043, 0.295470735989511, 0.23949237763351663, 0.07520338217538547, -0.3492985411520623, -0.0014406158607755976, 0.05827642301460955] |
709.4014 | The Klein-Gordon equation with a generalized Hulthen potential in
D-dimensions | An approximate solution of the Klein-Gordon equation for the general
Hulth\'en-type potentials in $D$-dimensions within the framework of an
approximation to the centrifugal term is obtained. The bound state energy
eigenvalues and the normalized eigenfunctions are obtained in terms of
hypergeometric polynomials.
| math-ph math.MP | an approximate solution of the kleingordon equation for the general hulthentype potentials in ddimensions within the framework of an approximation to the centrifugal term is obtained the bound state energy eigenvalues and the normalized eigenfunctions are obtained in terms of hypergeometric polynomials | [['an', 'approximate', 'solution', 'of', 'the', 'kleingordon', 'equation', 'for', 'the', 'general', 'hulthentype', 'potentials', 'in', 'ddimensions', 'within', 'the', 'framework', 'of', 'an', 'approximation', 'to', 'the', 'centrifugal', 'term', 'is', 'obtained', 'the', 'bound', 'state', 'energy', 'eigenvalues', 'and', 'the', 'normalized', 'eigenfunctions', 'are', 'obtained', 'in', 'terms', 'of', 'hypergeometric', 'polynomials']] | [-0.15742064967024616, 0.030843609700507552, -0.0900760998881263, 0.09255342453820403, -0.010071124290911162, -0.08698537768568934, -0.032448309632699665, 0.25131198934211235, -0.26030448378949633, -0.2564687971480009, 0.029211467739603505, -0.32830938328875275, -0.10981167576321196, 0.16988794648701824, -0.005316494140637721, 0.10178290057654787, 0.061374754599499995, 0.12185160865689196, -0.10593246167707371, -0.22826543429911864, 0.3395030024211581, 0.0656741693070749, 0.20197121191928843, 0.07713825813290186, 0.09455391862316102, -0.04223894440886996, 0.06791149139994891, -0.08174642993182671, -0.14961172049728835, 0.1139793337618069, 0.21271795815810923, 0.06367564801035858, 0.2535715298500003, -0.4376511328921812, -0.16328302132556352, 0.10349219210627603, 0.19933629109774056, 0.09604040851316802, -0.016402722177345577, -0.32845531360859553, 0.011911399753355398, -0.15382038011420063, -0.2673836621660285, -0.09988547843403933, 0.006571351754956129, 0.0796080115364819, -0.3289450009966769, 0.16183173061325784, 0.05045751162532081, -0.02364357238317408, -0.20812224123127213, -0.15125525928749817, 0.025429535043857445, 0.046952574377561486, 0.046300001959202856, 0.027990858206843456, 0.0027077614170749015, -0.16001724915170087, -0.05847550451573802, 0.36498262778651425, -0.08648779353399466, -0.32568112115670994, 0.01725663844405151, -0.11304334432977002, -0.04923845796913999, 0.1212097239657873, 0.14701283291527412, 0.17420211620628834, -0.1829228140640913, 0.16570756384370303, -0.017706851756041187, 0.10029406895543017, 0.11475178283048658, 0.011121950130739317, 0.10041252724690045, 0.02731609201376758, 0.04368907151880061, 0.14084679017797475, 0.0023129163877811374, -0.19814001446271814, -0.35496873453986355, -0.1380393699268674, -0.24807459487197864, 0.02083922216168991, -0.19655397856890552, -0.20734380258292687, 0.41415420229115135, 0.02990037489046411, 0.12265638561873901, 0.10668446661949885, 0.24371331896087745, 0.31902477522267075, 0.0025057125177870435, 0.10854234778117842, 0.24584192616819608, 0.2015835942598287, 0.07357753007445575, -0.22025802092081526, -0.03416232138917577, 0.19179956901182488] |
709.4015 | From Texts to Structured Documents: The Case of Health Practice
Guidelines | This paper describes a system capable of semi-automatically filling an XML
template from free texts in the clinical domain (practice guidelines). The XML
template includes semantic information not explicitly encoded in the text
(pairs of conditions and actions/recommendations). Therefore, there is a need
to compute the exact scope of conditions over text sequences expressing the
required actions. We present in this paper the rules developed for this task.
We show that the system yields good performance when applied to the analysis of
French practice guidelines.
| cs.AI | this paper describes a system capable of semiautomatically filling an xml template from free texts in the clinical domain practice guidelines the xml template includes semantic information not explicitly encoded in the text pairs of conditions and actionsrecommendations therefore there is a need to compute the exact scope of conditions over text sequences expressing the required actions we present in this paper the rules developed for this task we show that the system yields good performance when applied to the analysis of french practice guidelines | [['this', 'paper', 'describes', 'a', 'system', 'capable', 'of', 'semiautomatically', 'filling', 'an', 'xml', 'template', 'from', 'free', 'texts', 'in', 'the', 'clinical', 'domain', 'practice', 'guidelines', 'the', 'xml', 'template', 'includes', 'semantic', 'information', 'not', 'explicitly', 'encoded', 'in', 'the', 'text', 'pairs', 'of', 'conditions', 'and', 'actionsrecommendations', 'therefore', 'there', 'is', 'a', 'need', 'to', 'compute', 'the', 'exact', 'scope', 'of', 'conditions', 'over', 'text', 'sequences', 'expressing', 'the', 'required', 'actions', 'we', 'present', 'in', 'this', 'paper', 'the', 'rules', 'developed', 'for', 'this', 'task', 'we', 'show', 'that', 'the', 'system', 'yields', 'good', 'performance', 'when', 'applied', 'to', 'the', 'analysis', 'of', 'french', 'practice', 'guidelines']] | [-0.09672687857320332, 0.001636462681268486, -0.05030268822294948, 0.1092156597407579, -0.1037075584255425, -0.08542660297271573, 0.08649884878070138, 0.40752531851952273, -0.24922020827597452, -0.2996591377249431, 0.06625316589738109, -0.23492307315713593, -0.15503940148101675, 0.19839871306681917, -0.14862126985653526, 0.05249021723422976, 0.1290571123771813, 0.060180518515629784, -0.042887466424699164, -0.260957584162021, 0.32346272807834403, 0.027830162196464482, 0.35765356154713246, 0.046631512474656724, 0.09076903866315704, 0.015416867051195974, -0.060888926742509716, -0.02631022198502684, -0.1354578040306175, 0.16929995291727773, 0.39049629481243237, 0.2392938410464142, 0.2703572966856882, -0.40634691114315674, -0.14919086971453258, 0.07114700902075995, 0.15130119388257818, 0.1506982184114999, -0.026602199890129713, -0.2905984880940412, 0.1046345604034806, -0.19084201120893426, -0.04513616807803157, -0.11059090306627609, 0.006341798474923486, -0.02345077100298589, -0.27982458894118845, -0.0001790235816900219, 0.10212630922407177, 0.09594897518954462, -0.0579742770281709, -0.08446294694329567, 0.04753669181705585, 0.2123409054907998, 0.04600626428423095, 0.04147835780306542, 0.09772103181153181, -0.1388084603434739, -0.08495583812154586, 0.4134532983437003, -0.0249990730101542, -0.25315264652350117, 0.13528182096308142, -0.04620705465675287, -0.1509913835796483, 0.08410444256982633, 0.16246107078733898, 0.1158715068983535, -0.23769981409454236, 0.06628362182042717, -0.017961851609427305, 0.2577962933463, 0.07099504558192123, -0.014866908524362813, 0.19165720045843737, 0.19223066435716601, -0.0036589886183806116, 0.18454537496325515, -0.0311204614782972, -0.03450310126035696, -0.3237312783797582, -0.152242190053498, -0.15321873123979285, -0.034329073382867226, -0.06395085183664508, -0.18637256040459588, 0.4097586917203097, 0.22951167098446085, 0.13669406544518314, 0.0573078620003625, 0.30527564557269216, 0.030156040176128347, 0.061956301637803246, 0.06232301763832636, 0.10204193124636299, -0.01872408227618074, 0.1656898699099353, -0.15430939551498296, 0.08484365011654085, 0.054731865003261534] |
709.4016 | An object that defies stereotypes. X-ray observations of SBS 1150+599A
-- the binary nucleus of PN G135.9+55.9 | We present X-ray observations of the close binary nucleus of the planetary
nebula PN G135.9+55.9 obtained with the XMM satellite. The nebula is the most
oxygen-poor PN known to date and is located in the Galactic halo. It is known
to harbor a close binary nucleus of which only one component can be observed in
optical-UV range. New X-ray observations show that the invisible component is a
very hot compact star. This finding allows us to reconstruct the immediate past
of the object and predict its future. The parameters of the binary components
we determine strongly suggest that the precursor was a symbiotic supersoft
X-ray source that finished its life by Roche lobe overflow. PN G135.9+55.9 is
an excelent candidate for a future type Ia supernova.
| astro-ph | we present xray observations of the close binary nucleus of the planetary nebula pn g1359559 obtained with the xmm satellite the nebula is the most oxygenpoor pn known to date and is located in the galactic halo it is known to harbor a close binary nucleus of which only one component can be observed in opticaluv range new xray observations show that the invisible component is a very hot compact star this finding allows us to reconstruct the immediate past of the object and predict its future the parameters of the binary components we determine strongly suggest that the precursor was a symbiotic supersoft xray source that finished its life by roche lobe overflow pn g1359559 is an excelent candidate for a future type ia supernova | [['we', 'present', 'xray', 'observations', 'of', 'the', 'close', 'binary', 'nucleus', 'of', 'the', 'planetary', 'nebula', 'pn', 'g1359559', 'obtained', 'with', 'the', 'xmm', 'satellite', 'the', 'nebula', 'is', 'the', 'most', 'oxygenpoor', 'pn', 'known', 'to', 'date', 'and', 'is', 'located', 'in', 'the', 'galactic', 'halo', 'it', 'is', 'known', 'to', 'harbor', 'a', 'close', 'binary', 'nucleus', 'of', 'which', 'only', 'one', 'component', 'can', 'be', 'observed', 'in', 'opticaluv', 'range', 'new', 'xray', 'observations', 'show', 'that', 'the', 'invisible', 'component', 'is', 'a', 'very', 'hot', 'compact', 'star', 'this', 'finding', 'allows', 'us', 'to', 'reconstruct', 'the', 'immediate', 'past', 'of', 'the', 'object', 'and', 'predict', 'its', 'future', 'the', 'parameters', 'of', 'the', 'binary', 'components', 'we', 'determine', 'strongly', 'suggest', 'that', 'the', 'precursor', 'was', 'a', 'symbiotic', 'supersoft', 'xray', 'source', 'that', 'finished', 'its', 'life', 'by', 'roche', 'lobe', 'overflow', 'pn', 'g1359559', 'is', 'an', 'excelent', 'candidate', 'for', 'a', 'future', 'type', 'ia', 'supernova']] | [-0.08860776471417575, 0.04861705911094932, -0.08103170604001553, 0.09821909030858753, -0.16098182204933392, -0.10220618301352101, 0.06223767942800704, 0.3933901762855904, -0.20939601089395138, -0.29599036124076633, 0.09829919970232165, -0.3074266073195354, -0.07840159744216454, 0.23131517780249908, -0.04313447783213286, -0.05932626993827788, 0.11347084334683752, 0.007093395054754283, -0.034679213651485505, -0.2728392852706805, 0.28135549518028424, 0.08632866133167039, 0.08901965498022499, -0.028965423068300532, 0.058594691186463314, -0.05620406935035828, -0.018000039338533367, -0.09492017137300637, -0.09341262798937221, 0.059245354586487844, 0.26868716864775044, 0.1471020963102106, 0.14971538055096828, -0.3462603643891357, -0.24692472436701848, 0.05649767241935941, 0.18235905758578272, 0.005598772765277693, -0.051790666603852835, -0.2467995164962116, 0.11391499307466715, -0.2511489231597691, -0.22860970912641654, 0.08929660102529895, 0.07352222698104996, 0.019469988920415442, -0.20319531056734305, 0.045292053983310265, 0.031533138504961415, -0.02588184128537597, -0.14843672219089174, -0.08581199467880651, -0.029722342389591393, 0.10340698234855182, 0.01748728352813198, 0.09838426557354747, 0.14789461046235547, -0.1313583148728376, -0.04208639022406368, 0.40234997611315476, -0.004071074153577525, 0.04049727050883193, 0.2329883817361579, -0.21606792106352274, -0.1812785479003593, 0.18257617962635345, 0.10698793671788677, 0.12999371592591089, -0.16911790823002185, 0.002784876344126782, -0.06226187601264212, 0.22546745903627385, 0.018997924483662085, 0.023080485310077035, 0.3569726498487095, 0.16794096509231224, 0.008465091458977744, 0.14872281903785373, -0.27082465863269234, -0.00941291640582864, -0.21082595381737937, -0.11287674254627847, -0.17977439385232707, 0.08779454254221895, -0.08915097351044617, -0.1513379794057636, 0.32928104684475645, 0.08152921038443252, 0.199659360824005, -0.046424108196146015, 0.28677826142677715, 0.08517033186748564, 0.08089377241031755, 0.11692243135563793, 0.3640591688528066, 0.16412698816404575, 0.07663162084876575, -0.2272420770577377, 0.13553949162763143, -0.010475435770959371] |
709.4017 | Sufficient and Necessary Conditions for Semidefinite Representability of
Convex Hulls and Sets | A set $S\subseteq \re^n$ is called to be {\it Semidefinite (SDP)}
representable if $S$ equals the projection of a set in higher dimensional space
which is describable by some Linear Matrix Inequality (LMI). The contributions
of this paper are: (i) For bounded SDP representable sets $W_1,...,W_m$, we
give an explicit construction of an SDP representation for
$\cv{\cup_{k=1}^mW_k}$. This provides a technique for building global SDP
representations from the local ones. (ii) For the SDP representability of a
compact convex semialgebraic set $S$, we prove sufficient condition: the
boundary $\bdS$ is positively curved, and necessary condition: $\bdS$ has
nonnegative curvature at smooth points and on nondegenerate corners. This
amounts to the strict versus nonstrict quasi-concavity of defining polynomials
on those points on $\bdS$ where they vanish. The gaps between them are $\bdS$
having positive versus nonnegative curvature and smooth versus nonsmooth
points. A sufficient condition bypassing the gaps is when some defining
polynomials of $S$ are sos-concave. (iii) For the SDP representability of the
convex hull of a compact nonconvex semialgebraic set $T$, we find that the
critical object is $\pt_cT$, the maximum subset of $\pt T$ contained in $\pt
\cv{T}$. We prove sufficient conditions for SDP representability: $\pt_cT$ is
positively curved, and necessary conditions: $\pt_cT$ has nonnegative curvature
at smooth points and on nondegenerate corners. The gaps between them are
similar to case (ii). The positive definite Lagrange Hessian (PDLH) condition
is also discussed.
| math.OC math.AG | a set ssubseteq ren is called to be it semidefinite sdp representable if s equals the projection of a set in higher dimensional space which is describable by some linear matrix inequality lmi the contributions of this paper are i for bounded sdp representable sets w_1w_m we give an explicit construction of an sdp representation for cvcup_k1mw_k this provides a technique for building global sdp representations from the local ones ii for the sdp representability of a compact convex semialgebraic set s we prove sufficient condition the boundary bds is positively curved and necessary condition bds has nonnegative curvature at smooth points and on nondegenerate corners this amounts to the strict versus nonstrict quasiconcavity of defining polynomials on those points on bds where they vanish the gaps between them are bds having positive versus nonnegative curvature and smooth versus nonsmooth points a sufficient condition bypassing the gaps is when some defining polynomials of s are sosconcave iii for the sdp representability of the convex hull of a compact nonconvex semialgebraic set t we find that the critical object is pt_ct the maximum subset of pt t contained in pt cvt we prove sufficient conditions for sdp representability pt_ct is positively curved and necessary conditions pt_ct has nonnegative curvature at smooth points and on nondegenerate corners the gaps between them are similar to case ii the positive definite lagrange hessian pdlh condition is also discussed | [['a', 'set', 'ssubseteq', 'ren', 'is', 'called', 'to', 'be', 'it', 'semidefinite', 'sdp', 'representable', 'if', 's', 'equals', 'the', 'projection', 'of', 'a', 'set', 'in', 'higher', 'dimensional', 'space', 'which', 'is', 'describable', 'by', 'some', 'linear', 'matrix', 'inequality', 'lmi', 'the', 'contributions', 'of', 'this', 'paper', 'are', 'i', 'for', 'bounded', 'sdp', 'representable', 'sets', 'w_1w_m', 'we', 'give', 'an', 'explicit', 'construction', 'of', 'an', 'sdp', 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709.4018 | On the Lusternik-Schnirelmann category of spaces with 2-dimensional
fundamental group | The following inequality
\cat X\le \cat Y+\lceil\frac{hd(X)-r}{r+1}\rceil
holds for every locally trivial fibration between $ANE$ spaces $f:X\to Y$
which admits a section and has the $r$-connected fiber where $hd(X)$ is the
homotopical dimension of $X$. We apply this inequality to prove that
\cat X\le \lceil\frac{\dim X-1}{2}\rceil+cd(\pi_1(X))
for every complex $X$ with $cd(\pi_1(X))\le 2$.
| math.GT math.GN | the following inequality cat xle cat ylceilfrachdxrr1rceil holds for every locally trivial fibration between ane spaces fxto y which admits a section and has the rconnected fiber where hdx is the homotopical dimension of x we apply this inequality to prove that cat xle lceilfracdim x12rceilcdpi_1x for every complex x with cdpi_1xle 2 | [['the', 'following', 'inequality', 'cat', 'xle', 'cat', 'ylceilfrachdxrr1rceil', 'holds', 'for', 'every', 'locally', 'trivial', 'fibration', 'between', 'ane', 'spaces', 'fxto', 'y', 'which', 'admits', 'a', 'section', 'and', 'has', 'the', 'rconnected', 'fiber', 'where', 'hdx', 'is', 'the', 'homotopical', 'dimension', 'of', 'x', 'we', 'apply', 'this', 'inequality', 'to', 'prove', 'that', 'cat', 'xle', 'lceilfracdim', 'x12rceilcdpi_1x', 'for', 'every', 'complex', 'x', 'with', 'cdpi_1xle', '2']] | [-0.14510752346214592, 0.09226045786041995, -0.11028141906836583, 0.07879227019694386, 0.002551491847451852, -0.3060658450466486, -0.022824027100387886, 0.3725375935283242, -0.3262601628595469, -0.08973103769275607, 0.05606691592506, -0.30788368406724564, -0.11786462047270366, 0.2155900052273456, -0.1697901276187325, -0.07435307946360233, 0.04560136361693849, 0.086517372028427, -0.07862298947530894, -0.26906067117744564, 0.4194362322438736, -0.1866490562275356, 0.21870621069505505, 0.04360211333640072, 0.2166193979174583, 0.06562640028530542, 0.13481755966168582, 0.014654455022240172, -0.20987127864408445, 0.1172570199670023, 0.30493672492400725, 0.1274460553742793, 0.24585620617988158, -0.26925623748921884, -0.14967033089903584, 0.25454529534493175, 0.06551275649393092, -0.0390971675633966, -0.002343463830231708, -0.30537703085918816, 0.14889472309614019, -0.10329116120630381, -0.18114125080482693, -0.057873961677280615, 0.17786302791946396, -0.04346001605332202, -0.28972303205910993, 0.01754516003919499, 0.15946857494359112, 0.06875143715237476, -0.007251339964568615, -0.053401983229025285, -0.15750797585185086, 0.05821428634939069, -0.07739663673374726, 0.18595223063222913, 0.05163820707286727, -0.013731368679591283, -0.10906910957122336, 0.3242196022456854, -0.052682744975829005, -0.20541678939242752, 0.06656910426800652, -0.21703939236776562, -0.17125265245154805, 0.06448585500142404, -0.00842863912884222, 0.11310621763921666, 0.0331866396971199, 0.2415444310172461, -0.171506297223422, 0.20544600212110245, 0.1269580067838637, 0.017279586555170163, -0.014002333870347666, 0.12226741916823144, 0.17983771459560613, 0.09236043022603405, -0.05854212205229821, 0.043692398014506896, -0.3644720277159798, -0.2778517743572593, -0.10362481696017999, 0.2854438131599098, -0.10564425107708192, -0.11318309335228131, 0.2689703017549247, 0.03082426722940742, 0.169044600286502, 0.07829870032954353, 0.18985623642041974, 0.04194409510462868, -0.009660746341533199, 0.06680477588266438, 0.14121510060409045, 0.18868875159520884, 0.05779239273040879, -0.06851445356079815, 0.011192795830037522, 0.1963553348822253] |
709.4019 | Dissecting Subsecond Cadherin Bound States Reveals an Efficient Way for
Cells to Achieve Ultrafast Probing of their Environment | Cells continuously probe their environment with membrane receptors, achieving
subsecond adaptation of their behaviour [1-3]. Recently, several receptors,
including cadherins, were found to bind ligands with a lifetime of order of one
second. Here we show at the single molecule level that homotypic C-cadherin
association involves transient intermediates lasting less than a few tens of
milliseconds. Further, these intermediates transitionned towards more stable
states with a kinetic rate displaying exponential decrease with piconewton
forces. These features enable cells to detect ligands or measure surrounding
mechanical behaviour within a fraction of a second, much more rapidly than was
previously thought.
| q-bio.CB physics.bio-ph | cells continuously probe their environment with membrane receptors achieving subsecond adaptation of their behaviour 13 recently several receptors including cadherins were found to bind ligands with a lifetime of order of one second here we show at the single molecule level that homotypic ccadherin association involves transient intermediates lasting less than a few tens of milliseconds further these intermediates transitionned towards more stable states with a kinetic rate displaying exponential decrease with piconewton forces these features enable cells to detect ligands or measure surrounding mechanical behaviour within a fraction of a second much more rapidly than was previously thought | [['cells', 'continuously', 'probe', 'their', 'environment', 'with', 'membrane', 'receptors', 'achieving', 'subsecond', 'adaptation', 'of', 'their', 'behaviour', '13', 'recently', 'several', 'receptors', 'including', 'cadherins', 'were', 'found', 'to', 'bind', 'ligands', 'with', 'a', 'lifetime', 'of', 'order', 'of', 'one', 'second', 'here', 'we', 'show', 'at', 'the', 'single', 'molecule', 'level', 'that', 'homotypic', 'ccadherin', 'association', 'involves', 'transient', 'intermediates', 'lasting', 'less', 'than', 'a', 'few', 'tens', 'of', 'milliseconds', 'further', 'these', 'intermediates', 'transitionned', 'towards', 'more', 'stable', 'states', 'with', 'a', 'kinetic', 'rate', 'displaying', 'exponential', 'decrease', 'with', 'piconewton', 'forces', 'these', 'features', 'enable', 'cells', 'to', 'detect', 'ligands', 'or', 'measure', 'surrounding', 'mechanical', 'behaviour', 'within', 'a', 'fraction', 'of', 'a', 'second', 'much', 'more', 'rapidly', 'than', 'was', 'previously', 'thought']] | [-0.11020884294688135, 0.20217940711521917, -0.00631093424888923, 0.03460245768506003, -0.022453583262683152, -0.2011163650493416, 0.11152035091072321, 0.3956797248731876, -0.23158799205935493, -0.35078033889624644, 0.038160528310757016, -0.2874644952874208, -0.12082971020880126, 0.17295893251694278, -0.015454812980435948, -0.03152719539945427, 0.06323268642341814, 0.05120214014362121, 0.015608224352898518, -0.21477481064305054, 0.18265580564986952, 0.09404157035859283, 0.19885988679916128, 0.023597717770020066, 0.0863327456820641, -0.12888534246108582, 0.029876230762234515, -0.033919755127592995, -0.09125664981045177, 0.1389705964823772, 0.21487494395414522, 0.02758659338626588, 0.3221816183979978, -0.5028833791657985, -0.2497067348335476, 0.09184935863715471, 0.16918322508050532, 0.1335153034432148, -0.044940306388769426, -0.25078892670379777, 0.08657825590092112, -0.1757288012970431, -0.13540956004493937, -0.07049835882312858, 0.05883324484235233, 0.05936340653078304, -0.19830403974058933, 0.12118511455560814, -0.015681411326891676, 0.05791331758031372, -0.07865351794849236, -0.09222624066391404, -0.030682930478000456, 0.13431539617661273, 0.044672602702402656, 0.03460816075676121, 0.2770303930461973, -0.12400052270170339, -0.09174187464121077, 0.3408107462041464, -0.020653061235393157, -0.13257525810376578, 0.28417060830505547, -0.17535018136475197, -0.12927123343994476, 0.24856276453002213, 0.13205415080541494, 0.14992530728911155, -0.16305300026901604, -0.10257664715544772, 0.07004717002939626, 0.2639216978448568, 0.1389086365282113, 0.08349719627030655, 0.1996448035207913, 0.2250485206094868, 0.042853291165659724, 0.15662916447275999, -0.11103732788397633, -0.08867106854569973, -0.1763862302171585, -0.14789545473873078, -0.08930160786918144, 0.0838612711042665, -0.043704443121540176, -0.12522208007513402, 0.37551941858009275, 0.0368217387207851, 0.21952725719833344, 0.09321885263444088, 0.20403144407546936, 0.008307211949566821, 0.1615182627820573, 0.011532575447942232, 0.24115652398004667, 0.09146437763486095, 0.09266223044965186, -0.2023079368812704, 0.12416263065329686, 0.003726191285844009] |
709.402 | Circuit theory for crossed Andreev reflection and nonlocal conductance | Nonlocal currents, in devices where two normal metal terminals are contacted
to a superconductor, are determined using the circuit theory of mesoscopic
superconductivity. We calculate the conductance associated with crossed Andreev
reflection and electron transfer between the two normal metal terminals, in
addition to the conductance from direct Andreev reflection and quasiparticle
tunneling. Dephasing and proximity effect are taken into account.
| cond-mat.mes-hall cond-mat.supr-con | nonlocal currents in devices where two normal metal terminals are contacted to a superconductor are determined using the circuit theory of mesoscopic superconductivity we calculate the conductance associated with crossed andreev reflection and electron transfer between the two normal metal terminals in addition to the conductance from direct andreev reflection and quasiparticle tunneling dephasing and proximity effect are taken into account | [['nonlocal', 'currents', 'in', 'devices', 'where', 'two', 'normal', 'metal', 'terminals', 'are', 'contacted', 'to', 'a', 'superconductor', 'are', 'determined', 'using', 'the', 'circuit', 'theory', 'of', 'mesoscopic', 'superconductivity', 'we', 'calculate', 'the', 'conductance', 'associated', 'with', 'crossed', 'andreev', 'reflection', 'and', 'electron', 'transfer', 'between', 'the', 'two', 'normal', 'metal', 'terminals', 'in', 'addition', 'to', 'the', 'conductance', 'from', 'direct', 'andreev', 'reflection', 'and', 'quasiparticle', 'tunneling', 'dephasing', 'and', 'proximity', 'effect', 'are', 'taken', 'into', 'account']] | [-0.22734297258916814, 0.19085464690674525, -0.014620708484874397, 0.04772749179821523, -0.05420020481449415, -0.25985648567773034, 0.11311126093677872, 0.3906719430242894, -0.26503001434392615, -0.2695372959629434, -0.11291268076671318, -0.39299911443815855, -0.11783155405008403, 0.1969216125406569, 0.023489955461538228, -0.037699244534749474, -0.05849995734322755, -0.056821972536320084, -0.09970319947441582, -0.16618058207582254, 0.35670141414662854, -0.10366974621400481, 0.3414791518913918, 0.10433804170518625, -0.007540229410238442, 0.02720446680046496, 0.06320351103442859, 0.07994018983645518, -0.10905583992936328, 0.01351773767869492, 0.3087946052670662, -0.18119857359494343, 0.11411392711652596, -0.5901730621203047, -0.15887021686744374, -0.02179144499976127, 0.10938760492240736, 0.12335442791341758, -0.030711447682659158, -0.3397273054560188, 0.016934022704353097, -0.19892668608026426, -0.008080005366880003, 0.02072671845127813, -0.04910541052517832, -0.04929124854016499, -0.26432559107903575, 0.07302761990882334, 0.0038168647986852, 0.025854068777722415, -0.027631126515248593, -0.06787367671209037, -0.08585044307649502, 0.11725777789919836, -0.023343467962790708, -0.09434403386730396, 0.19070923856562613, -0.10617594227011574, -0.13122124927210027, 0.2886005817744576, -0.036162539766948734, -0.08978151738573034, 0.16111318752184878, -0.2221271231785783, 0.049247486272551974, 0.1637221393404437, 0.07966183398499108, 0.02805242589751228, -0.21475870156141577, 0.0498148429438426, -0.014687684654700951, 0.03153713554388187, 0.10063381412936771, 0.11070049596858807, 0.2489225077213811, 0.16356202112663476, 0.04401655438676721, 0.1182144104396222, -0.16190070250609767, -0.020053008418591298, -0.28216073906323946, -0.19671817832305782, -0.22634246142306289, 0.14210265464546373, 0.027068346836384708, -0.18618954707425636, 0.3626807851136708, 0.1344054032453015, 0.20777133165965558, -0.06373398505212342, 0.3293835485323531, 0.21995865675758142, 0.07098895424335706, 0.034010496051585085, 0.14671907749515575, 0.28883600120478475, 0.03857040928951541, -0.3837189430668645, 0.06440229788537091, -0.006179745873955429] |
709.4021 | Luminosity determination for the quasi-free nuclear reactions | A method for the calculation of the luminosity for the proton-nucleus
collisions based on the quasi-free proton-proton scattering is presented. As an
example of application the integrated luminosity for the scattering of protons
off the deuteron target is determined for the experiment of the quasi-free pn
--> pneta reaction performed by means of the COSY-11 facility.
| nucl-ex | a method for the calculation of the luminosity for the protonnucleus collisions based on the quasifree protonproton scattering is presented as an example of application the integrated luminosity for the scattering of protons off the deuteron target is determined for the experiment of the quasifree pn pneta reaction performed by means of the cosy11 facility | [['a', 'method', 'for', 'the', 'calculation', 'of', 'the', 'luminosity', 'for', 'the', 'protonnucleus', 'collisions', 'based', 'on', 'the', 'quasifree', 'protonproton', 'scattering', 'is', 'presented', 'as', 'an', 'example', 'of', 'application', 'the', 'integrated', 'luminosity', 'for', 'the', 'scattering', 'of', 'protons', 'off', 'the', 'deuteron', 'target', 'is', 'determined', 'for', 'the', 'experiment', 'of', 'the', 'quasifree', 'pn', 'pneta', 'reaction', 'performed', 'by', 'means', 'of', 'the', 'cosy11', 'facility']] | [-0.018474494613474234, 0.11994893441892186, -0.15444076950714755, 0.1237206564835188, 0.046067277088084, -0.04084264939989556, -0.005733692002567378, 0.3534527759660374, -0.18579556842927228, -0.25377839810468933, -0.04388449090448293, -0.34588184742764994, 0.06883907436647198, 0.25791136282072824, 0.14498080164194108, 0.13703295178711414, 0.11442429580810395, 0.05313739326189865, -0.012534931798952377, -0.20037140047008342, 0.3683160500558601, 0.18484882407567718, 0.24211486252871425, 0.15235965704037385, 0.12024125793779439, 0.15789191639156674, -0.038380192262543876, -0.08911550755358555, -0.07513972011140801, 0.1210326892202085, 0.29690444148568945, 0.08818858410655098, 0.1017642142759128, -0.4100599032234062, -0.11469009532169862, 0.05549873426471921, 0.11763758134435523, 0.059615423263643275, -0.10093314272817225, -0.28697446584701536, 0.033061656017195094, -0.2307548626241359, -0.19204290276393293, 0.029253637231886388, 0.05486718097871, 0.030984143921258776, -0.30461475117640063, 0.00898000065406615, -0.01996581694957885, 0.07847762148488652, -0.1001842491667379, -0.19301504922861404, -0.010633072731169787, 0.03924478026614948, 0.016631549164991488, 0.0684112838305406, 0.18993578763170677, -0.11932596959893338, -0.14789391265843402, 0.3698390390046618, 0.00614409517835487, -0.10476265274654989, 0.11559424222954973, -0.13996271275153213, -0.04925739699551328, 0.17090439840050584, 0.23401557809503917, 0.1438932174986059, -0.25364996885711494, 0.0813030310059813, -0.040039185078983956, 0.14575931649993767, 0.10828568500212647, -0.022692143815484914, 0.0878079815894704, 0.30175886433571575, -0.03146641074933789, 0.10753772353584116, -0.18321089833890172, 0.002088730375875126, -0.4313360212201422, -0.12196498570794409, -0.1735082713717764, 0.0869193033399907, -0.005063061066903174, -0.07194789438085122, 0.29884291274303737, 0.03872810636054386, 0.2349967092952945, -0.027079120329157873, 0.30359712182120846, 0.17571353766516867, 0.04482016482559795, 0.0272957314229147, 0.30758969821035864, 0.18647549709897826, 0.1112752474251796, -0.3365015238862146, 0.08503281347961589, 0.036310573091561146] |
709.4022 | The Lieb-Liniger Model as a Limit of Dilute Bosons in Three Dimensions | We show that the Lieb-Liniger model for one-dimensional bosons with repulsive
$\delta$-function interaction can be rigorously derived via a scaling limit
from a dilute three-dimensional Bose gas with arbitrary repulsive interaction
potential of finite scattering length. For this purpose, we prove bounds on
both the eigenvalues and corresponding eigenfunctions of three-dimensional
bosons in strongly elongated traps and relate them to the corresponding
quantities in the Lieb-Liniger model. In particular, if both the scattering
length $a$ and the radius $r$ of the cylindrical trap go to zero, the
Lieb-Liniger model with coupling constant $g \sim a/r^2$ is derived. Our bounds
are uniform in $g$ in the whole parameter range $0\leq g\leq \infty$, and apply
to the Hamiltonian for three-dimensional bosons in a spectral window of size
$\sim r^{-2}$ above the ground state energy.
| math-ph cond-mat.stat-mech math.MP | we show that the liebliniger model for onedimensional bosons with repulsive deltafunction interaction can be rigorously derived via a scaling limit from a dilute threedimensional bose gas with arbitrary repulsive interaction potential of finite scattering length for this purpose we prove bounds on both the eigenvalues and corresponding eigenfunctions of threedimensional bosons in strongly elongated traps and relate them to the corresponding quantities in the liebliniger model in particular if both the scattering length a and the radius r of the cylindrical trap go to zero the liebliniger model with coupling constant g sim ar2 is derived our bounds are uniform in g in the whole parameter range 0leq gleq infty and apply to the hamiltonian for threedimensional bosons in a spectral window of size sim r2 above the ground state energy | [['we', 'show', 'that', 'the', 'liebliniger', 'model', 'for', 'onedimensional', 'bosons', 'with', 'repulsive', 'deltafunction', 'interaction', 'can', 'be', 'rigorously', 'derived', 'via', 'a', 'scaling', 'limit', 'from', 'a', 'dilute', 'threedimensional', 'bose', 'gas', 'with', 'arbitrary', 'repulsive', 'interaction', 'potential', 'of', 'finite', 'scattering', 'length', 'for', 'this', 'purpose', 'we', 'prove', 'bounds', 'on', 'both', 'the', 'eigenvalues', 'and', 'corresponding', 'eigenfunctions', 'of', 'threedimensional', 'bosons', 'in', 'strongly', 'elongated', 'traps', 'and', 'relate', 'them', 'to', 'the', 'corresponding', 'quantities', 'in', 'the', 'liebliniger', 'model', 'in', 'particular', 'if', 'both', 'the', 'scattering', 'length', 'a', 'and', 'the', 'radius', 'r', 'of', 'the', 'cylindrical', 'trap', 'go', 'to', 'zero', 'the', 'liebliniger', 'model', 'with', 'coupling', 'constant', 'g', 'sim', 'ar2', 'is', 'derived', 'our', 'bounds', 'are', 'uniform', 'in', 'g', 'in', 'the', 'whole', 'parameter', 'range', '0leq', 'gleq', 'infty', 'and', 'apply', 'to', 'the', 'hamiltonian', 'for', 'threedimensional', 'bosons', 'in', 'a', 'spectral', 'window', 'of', 'size', 'sim', 'r2', 'above', 'the', 'ground', 'state', 'energy']] | [-0.11255639577399107, 0.20577367967185142, -0.028704187802786968, 0.060663283661459434, 0.013730160645068143, -0.1874962830916047, -0.007940117156866825, 0.34623196163694514, -0.23904866860671478, -0.22377988746985933, 0.024784912611005093, -0.30792194130393025, -0.047469953103273205, 0.14725180608255675, 0.07241991678408037, 0.05431732701871431, 0.036167212391526184, 0.043495010545787714, -0.08085297175266808, -0.22101358326935125, 0.3004764124775785, -0.00549201042899354, 0.2164820030836078, 0.11699894597669216, 0.03861167372749399, 0.04197230774584706, 0.10340713111994167, -0.0009021421710988789, -0.23109532546484182, 0.04907114584365803, 0.18820464863992212, -0.023559671740231075, 0.1979575774625339, -0.3909645090937953, -0.20842714801035594, 0.1338301518663877, 0.2090377302692187, 0.09846737020592572, -0.0020532135500671398, -0.3156518209390483, 0.006746335258481629, -0.18829608188984406, -0.21697998155176526, -0.04108477531311413, 0.07388633302638703, 0.06742915292058817, -0.3011749941735726, 0.1201668496695206, 0.062297091362504005, 0.02818491227332164, -0.10842612879192033, -0.08522448705678637, -0.018256335570406394, 0.07432516179555519, 0.014510017748265951, 0.021811856406257546, 0.10074014090368467, -0.14428409879540346, -0.01925926141539645, 0.3858432433582052, -0.14354903341419148, -0.2184304554565725, 0.1980186127140328, -0.17223351896973327, -0.07252663921804703, 0.13897765267668574, 0.1447535329251409, 0.08422929660247808, -0.12270781729779573, 0.20467877439571594, -0.08165282592667747, 0.17001696545996697, 0.03519633366853337, 0.005795101391744207, 0.20389825605194678, 0.12640354012414304, 0.048640047796211686, 0.165025998071845, -0.10108281203539457, -0.08688584986763696, -0.3206448079453725, -0.12881931402918065, -0.24426390361887487, 0.06281341617983399, -0.13922856979126774, -0.16749546666114562, 0.348448707969069, 0.1562526511343921, 0.22960526305674153, 0.10815547388329198, 0.24246880607538376, 0.14519644821870537, 0.030651611253040646, 0.09011494114229483, 0.23004620949116847, 0.1677477388822643, 0.03105199817307011, -0.23476951632994425, -0.08306157659160707, 0.12116053837676052] |
709.4023 | Brane Vector Phenomenology | Local oscillations of the brane world are manifested as masssive vector
fields. Their coupling to the Standard Model can be obtained using the method
of nonlinear realizations of the spontaneously broken higher dimensional
space-time symmetries, and to an extent, are model independent.
Phenomenological limits on these vector field parameters are obtained using LEP
collider data and dark matter constraints.
| hep-th hep-ph | local oscillations of the brane world are manifested as masssive vector fields their coupling to the standard model can be obtained using the method of nonlinear realizations of the spontaneously broken higher dimensional spacetime symmetries and to an extent are model independent phenomenological limits on these vector field parameters are obtained using lep collider data and dark matter constraints | [['local', 'oscillations', 'of', 'the', 'brane', 'world', 'are', 'manifested', 'as', 'masssive', 'vector', 'fields', 'their', 'coupling', 'to', 'the', 'standard', 'model', 'can', 'be', 'obtained', 'using', 'the', 'method', 'of', 'nonlinear', 'realizations', 'of', 'the', 'spontaneously', 'broken', 'higher', 'dimensional', 'spacetime', 'symmetries', 'and', 'to', 'an', 'extent', 'are', 'model', 'independent', 'phenomenological', 'limits', 'on', 'these', 'vector', 'field', 'parameters', 'are', 'obtained', 'using', 'lep', 'collider', 'data', 'and', 'dark', 'matter', 'constraints']] | [-0.12545704573457098, 0.19118098785587917, -0.061673520831391215, 0.0979543994542147, -0.13310356300067286, -0.14418843743423448, -0.027033602401357274, 0.33392355226558346, -0.276934787807665, -0.3326184476147695, 0.09415254513291514, -0.259062059512683, -0.049239348371288384, 0.18790236647754652, 0.029584747979995506, 0.05884508652098734, -0.03205204860243047, 0.0302085324415359, -0.052719737523524414, -0.27879103363074104, 0.31991219103079416, 0.05352044689212123, 0.29810178388263386, -0.019923955362675518, 0.10915669286623597, -0.04538962633573804, -0.006687735325801347, 0.03997702437356628, -0.09840425298823212, 0.09711084172836151, 0.16367013997334087, 0.10063367698766625, 0.0894443414631653, -0.4741643798248521, -0.23951262845818339, 0.12565938877905236, 0.1425117728830283, 0.14825047506019473, -0.028317712357765513, -0.38323599125804575, 0.03939917182614063, -0.1436144212132384, -0.13997998030792022, -0.13635046157086717, -0.07530325660602478, -0.03338577646505216, -0.29572344145833934, 0.12363988008542821, -0.024555455626325745, 0.06092281735919673, -0.07626488982250207, -0.1277171021873324, -0.12603299678624447, 0.040081235291115166, 0.13566439717221235, -0.011935735041082933, 0.17420486205032673, -0.18875355508084637, -0.17552755888679933, 0.40153721655751096, -0.10824268974428033, -0.21518022312124357, 0.1842286623372086, -0.12476870504304252, -0.0913440727484252, 0.08351971051286392, 0.21813810794967517, 0.07891367487448814, -0.14794176181071791, 0.18792684290132583, -0.02862824588725022, 0.1301718892344948, 0.03481225461442152, 0.0650453484970434, 0.28505694767428114, 0.14466567207448955, 0.00250768454360037, 0.04668591310436223, -0.05783479697279761, -0.11075327323813891, -0.3882374882312684, -0.04980158507984517, -0.14723284406073647, 0.00016085615638515045, -0.1234129367246702, -0.09444183625826805, 0.36875255955062036, 0.13399453047193297, 0.23394646415294246, -0.0036035041356908865, 0.2599679407631529, 0.15176726392558615, 0.08525700616130429, 0.014551376659726193, 0.3115543313485024, 0.15320996672982864, 0.07494373550510099, -0.16800385829992592, -0.07134650221319291, 0.04748401287461406] |
709.4024 | Shut up and calculate | I advocate an extreme "shut-up-and-calculate" approach to physics, where our
external physical reality is assumed to be purely mathematical. This brief
essay motivates this "it's all just equations" assumption and discusses its
implications.
| physics.pop-ph gr-qc hep-th math-ph math.MP | i advocate an extreme shutupandcalculate approach to physics where our external physical reality is assumed to be purely mathematical this brief essay motivates this its all just equations assumption and discusses its implications | [['i', 'advocate', 'an', 'extreme', 'shutupandcalculate', 'approach', 'to', 'physics', 'where', 'our', 'external', 'physical', 'reality', 'is', 'assumed', 'to', 'be', 'purely', 'mathematical', 'this', 'brief', 'essay', 'motivates', 'this', 'its', 'all', 'just', 'equations', 'assumption', 'and', 'discusses', 'its', 'implications']] | [-0.07294671458657831, 0.09297031384312504, -0.13883709654328413, 0.07743448300971068, -0.21526306451414712, -0.14027868010452949, 0.004727601277409121, 0.2987086482171435, -0.28568553761579096, -0.29654816613765433, 0.09681232999719214, -0.20661763344833162, -0.2247989966708701, 0.11478789884131402, -0.15872598745045252, -0.010481862704182277, 0.02155580371618271, 0.030962803517468274, -0.05678472149884328, -0.24438773223664612, 0.3382111712489859, 0.08618980960454792, 0.24968348334368784, 0.09190206694984226, 0.06952747584728058, 0.017375186456774827, -0.0757755622616969, -0.04668274273717543, -0.11506544391158968, 0.08402210511849262, 0.22835135905188508, 0.22142199974041432, 0.35215787205379456, -0.4887911666301079, -0.20002217628643848, 0.10556817791075446, 0.10424755420535803, 0.11714494113402907, -0.009868791836197488, -0.27175728703150526, 0.027190397027879953, -0.2007046546204947, -0.21854440183960833, -0.01884313784830738, 0.05027775251073763, -0.07512213278096169, -0.2187083120807074, 0.0010655067162588239, 0.10954274801770225, 0.10620298871072009, -0.06645657266926719, -0.1353618422144791, 0.11144606080051744, 0.0392307965666987, 0.09338092526013497, 0.014788635075092316, 0.15171287930570543, -0.11087583155313041, -0.08373913366813213, 0.46017853112425655, 0.045227629714645445, -0.20125751916202717, 0.2560115334963484, -0.12291649685357697, -0.15646224084775895, 0.005806599321658723, 0.1314025393803604, 0.0837813118705526, -0.24623344314750284, 0.11120010429112881, -0.00011399135109968483, 0.13824537582695484, -0.0491378404549323, 0.05476293544052169, 0.25851987791247666, 0.1793172816396691, -0.032538983796257526, 0.07127080126883811, 0.04622185230982723, -0.13063684532244224, -0.4144481004914269, -0.14245079777901992, -0.12635439477526234, 0.11892507041920908, -0.006760825679066329, -0.16515871763112955, 0.3653252863296075, 0.31017262989189476, 0.1486445158952847, -0.021158743838896044, 0.33893518848344684, 0.12010520515104872, -0.054288050097966334, 0.04291661431489047, 0.2841754292603582, 0.09270337759517133, 0.15561956164310686, -0.10702515915909316, 0.06020306859863922, 0.0044069584691897035] |
709.4025 | Uncovering the Chemical Signature of the First Stars in the Universe | The chemical abundance patterns observed in metal-poor Galactic halo stars
contain the signature of the first supernovae, and thus allows us to probe the
first stars that formed in the universe. We construct a theoretical model for
the early chemical enrichment history of the Milky Way, aiming in particular at
the contribution from pair-instability supernovae (PISNe). These are a natural
consequence of current theoretical models for primordial star formation at the
highest masses. However, no metal-poor star displaying the distinct PISN
signature has yet been observed. We here argue that this apparent absence of
any PISN signature is due to an observational selection effect. Whereas most
surveys traditionally focus on the most metal-poor stars, we predict that early
PISN enrichment tends to `overshoot', reaching enrichment levels of [Ca/H] ~=
-2.5 that would be missed by current searches. We utilize existing
observational data to place constraints on the primordial initial mass function
(IMF). The number fraction of PISNe in the primordial stellar population is
estimated to be <0.07, or ~< 40% by mass, assuming that metal-free stars have
masses in excess of 10 M_sun. We further predict, based on theoretical
estimates for the relative number of PISNe, that the expected fraction of
second generation stars below [Ca/H]=-2 with a dominant (i.e., >90%)
contribution from PISNe is merely ~1e-4 - 5e-4. The corresponding fraction of
stars formed from gas exclusively enriched by PISNe is a factor of ~4 smaller.
With the advent of next generation telescopes and new, deeper surveys, we
should be able to test these predictions.
| astro-ph | the chemical abundance patterns observed in metalpoor galactic halo stars contain the signature of the first supernovae and thus allows us to probe the first stars that formed in the universe we construct a theoretical model for the early chemical enrichment history of the milky way aiming in particular at the contribution from pairinstability supernovae pisne these are a natural consequence of current theoretical models for primordial star formation at the highest masses however no metalpoor star displaying the distinct pisn signature has yet been observed we here argue that this apparent absence of any pisn signature is due to an observational selection effect whereas most surveys traditionally focus on the most metalpoor stars we predict that early pisn enrichment tends to overshoot reaching enrichment levels of cah 25 that would be missed by current searches we utilize existing observational data to place constraints on the primordial initial mass function imf the number fraction of pisne in the primordial stellar population is estimated to be 007 or 40 by mass assuming that metalfree stars have masses in excess of 10 m_sun we further predict based on theoretical estimates for the relative number of pisne that the expected fraction of second generation stars below cah2 with a dominant ie 90 contribution from pisne is merely 1e4 5e4 the corresponding fraction of stars formed from gas exclusively enriched by pisne is a factor of 4 smaller with the advent of next generation telescopes and new deeper surveys we should be able to test these predictions | [['the', 'chemical', 'abundance', 'patterns', 'observed', 'in', 'metalpoor', 'galactic', 'halo', 'stars', 'contain', 'the', 'signature', 'of', 'the', 'first', 'supernovae', 'and', 'thus', 'allows', 'us', 'to', 'probe', 'the', 'first', 'stars', 'that', 'formed', 'in', 'the', 'universe', 'we', 'construct', 'a', 'theoretical', 'model', 'for', 'the', 'early', 'chemical', 'enrichment', 'history', 'of', 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709.4026 | Recycling Matter in the Universe. X-ray observations of SBS 1150+599A
(PN G135.9+55.9) | We present X-ray observations of the close binary nucleus of the planetary
nebula SBS 1150+599A obtained with the XMM-Newton satellite. Only one component
of the binary can be observed in optical-UV. New X-ray observations show that
the previously invisible component is a very hot compact star. This finding
allows us to deduce rough values for the basic parameters of the binary. With a
high probability the total mass of the system exceeds Chandrasekhar limit and
makes the SBS 1150+599A one of the best candidate for a supernova type Ia
progenitor.
| astro-ph | we present xray observations of the close binary nucleus of the planetary nebula sbs 1150599a obtained with the xmmnewton satellite only one component of the binary can be observed in opticaluv new xray observations show that the previously invisible component is a very hot compact star this finding allows us to deduce rough values for the basic parameters of the binary with a high probability the total mass of the system exceeds chandrasekhar limit and makes the sbs 1150599a one of the best candidate for a supernova type ia progenitor | [['we', 'present', 'xray', 'observations', 'of', 'the', 'close', 'binary', 'nucleus', 'of', 'the', 'planetary', 'nebula', 'sbs', '1150599a', 'obtained', 'with', 'the', 'xmmnewton', 'satellite', 'only', 'one', 'component', 'of', 'the', 'binary', 'can', 'be', 'observed', 'in', 'opticaluv', 'new', 'xray', 'observations', 'show', 'that', 'the', 'previously', 'invisible', 'component', 'is', 'a', 'very', 'hot', 'compact', 'star', 'this', 'finding', 'allows', 'us', 'to', 'deduce', 'rough', 'values', 'for', 'the', 'basic', 'parameters', 'of', 'the', 'binary', 'with', 'a', 'high', 'probability', 'the', 'total', 'mass', 'of', 'the', 'system', 'exceeds', 'chandrasekhar', 'limit', 'and', 'makes', 'the', 'sbs', '1150599a', 'one', 'of', 'the', 'best', 'candidate', 'for', 'a', 'supernova', 'type', 'ia', 'progenitor']] | [-0.09177165188723141, 0.07438468147172696, -0.07706487173111075, 0.0870059067176448, -0.1705983456845085, -0.09676549222009877, 0.11688000179775473, 0.3471538236571683, -0.2011194001055426, -0.31332650140134827, 0.06635895860252074, -0.30145053073210876, -0.042296144656009144, 0.23763523800298572, -0.043315996245170636, 0.0016597526602304747, 0.1360947034890867, 0.013787354453880754, -0.05283724961336702, -0.2718665591544575, 0.3216631249576393, 0.0816686703513066, 0.14317995702019995, -0.057217317148186134, 0.09707834044885304, -0.018952228410893845, -0.03931895775410036, -0.07052699031515254, -0.11390447835219675, 0.07755638812409921, 0.22760544004542882, 0.13198824681134688, 0.1776880088986622, -0.33465824340366657, -0.24058955683269434, 0.05377921022267805, 0.1575193775455571, 0.023346311496506032, -0.02503888379530205, -0.2326741588392502, 0.09646434348283542, -0.23816811803521382, -0.21160316799456874, 0.08118941504508256, 0.0546233203365571, 0.060044708403034344, -0.2590634766138262, 0.07226709480293923, 0.02328229330273138, -0.033073718607839614, -0.1600370447364791, -0.08784837454117628, -0.017261835818903313, 0.07285142161676453, 0.035548462343609165, 0.03458511169689397, 0.10343975828857058, -0.13454550467690246, -0.022958726037500633, 0.38890780698921945, -0.055119497088404995, 0.0023029071123649675, 0.22506404868844482, -0.2035314798199882, -0.18674410913760464, 0.17520904386312597, 0.10420502973720432, 0.1115581012227469, -0.16008672272372576, -0.0005614049687412464, -0.08750666357680327, 0.22839367468323973, 0.03386753431469616, 0.06170368942588943, 0.3051522086374462, 0.18553488778545418, 0.029617478429443306, 0.1358274824749161, -0.2597573438762791, -0.0007528208493669, -0.20969966616636762, -0.11785494727858653, -0.16590797734032903, 0.10779110235226755, -0.14664748861024338, -0.12605982003733515, 0.32152840989745324, 0.0803597990785622, 0.232382939538608, 0.015659270764121578, 0.2877263600420621, 0.12791438028992463, 0.07260121517918176, 0.0966660609572298, 0.3669808777359625, 0.17455594211609826, 0.0748305168054584, -0.23352434382153053, 0.08802314057635764, 0.032122350931685] |
709.4027 | On the Structure of Dark Matter Halos at the Damping Scale of the Power
Spectrum with and without Relict Velocities | We report a series of high-resolution cosmological N-body simulations
designed to explore the formation and properties of dark matter halos with
masses close to the damping scale of the primordial power spectrum of density
fluctuations. We further investigate the effect that the addition of a random
component, v_rms, into the particle velocity field has on the structure of
halos. We adopted as a fiducial model the Lambda Warm Dark Matter cosmology
with a non-thermal sterile neutrino mass of 0.5 keV. The filtering mass
corresponds then to M_f = 2.6x10^12 M_sun/h. Halos of masses close to M_f were
simulated with several million of particles. The results show that, on one
hand, the inner density slope of these halos (at radii <~0.02 the virial radius
Rvir) is systematically steeper than the one corresponding to the NFW fit or to
the CDM counterpart. On the other hand, the overall density profile (radii
larger than 0.02Rvir) is less curved and less concentrated than the NFW fit,
with an outer slope shallower than -3. For simulations with v_rms, the inner
halo density profiles flatten significantly at radii smaller than 2-3 kpc/h
(<~0.010-0.015Rvir). A constant density core is not detected in our
simulations, with the exception of one halo for which the flat core radius is
~1 kpc/h. Nevertheless, if ``cored'' density profiles are used to fit the halo
profiles, the inferred core radii are ~0.1-0.8 kpc/h, in rough agreement with
theoretical predictions based on phase-space constrains, and on dynamical
models of warm gravitational collapse. A reduction of v_rms by a factor of 3
produces a modest decrease in core radii, less than a factor of 1.5. We discuss
the extension of our results into several contexts, for example, to the
structure of the cold DM micro-halos at the damping scale of this model.
| astro-ph | we report a series of highresolution cosmological nbody simulations designed to explore the formation and properties of dark matter halos with masses close to the damping scale of the primordial power spectrum of density fluctuations we further investigate the effect that the addition of a random component v_rms into the particle velocity field has on the structure of halos we adopted as a fiducial model the lambda warm dark matter cosmology with a nonthermal sterile neutrino mass of 05 kev the filtering mass corresponds then to m_f 26x1012 m_sunh halos of masses close to m_f were simulated with several million of particles the results show that on one hand the inner density slope of these halos at radii 002 the virial radius rvir is systematically steeper than the one corresponding to the nfw fit or to the cdm counterpart on the other hand the overall density profile radii larger than 002rvir is less curved and less concentrated than the nfw fit with an outer slope shallower than 3 for simulations with v_rms the inner halo density profiles flatten significantly at radii smaller than 23 kpch 00100015rvir a constant density core is not detected in our simulations with the exception of one halo for which the flat core radius is 1 kpch nevertheless if cored density profiles are used to fit the halo profiles the inferred core radii are 0108 kpch in rough agreement with theoretical predictions based on phasespace constrains and on dynamical models of warm gravitational collapse a reduction of v_rms by a factor of 3 produces a modest decrease in core radii less than a factor of 15 we discuss the extension of our results into several contexts for example to the structure of the cold dm microhalos at the damping scale of this model | [['we', 'report', 'a', 'series', 'of', 'highresolution', 'cosmological', 'nbody', 'simulations', 'designed', 'to', 'explore', 'the', 'formation', 'and', 'properties', 'of', 'dark', 'matter', 'halos', 'with', 'masses', 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709.4028 | D-branes and Normal Functions | We explain the B-model origin of extended Picard-Fuchs equations satisfied by
the D-brane superpotential on compact Calabi-Yau threefolds. Via the
Abel-Jacobi map, the domainwall tension is identified with a Poincare normal
function--a transversal holomorphic section of the Griffiths intermediate
Jacobian. Within this formalism, we derive the extended Picard-Fuchs equation
associated with the mirror of the real quintic.
| hep-th math.AG | we explain the bmodel origin of extended picardfuchs equations satisfied by the dbrane superpotential on compact calabiyau threefolds via the abeljacobi map the domainwall tension is identified with a poincare normal functiona transversal holomorphic section of the griffiths intermediate jacobian within this formalism we derive the extended picardfuchs equation associated with the mirror of the real quintic | [['we', 'explain', 'the', 'bmodel', 'origin', 'of', 'extended', 'picardfuchs', 'equations', 'satisfied', 'by', 'the', 'dbrane', 'superpotential', 'on', 'compact', 'calabiyau', 'threefolds', 'via', 'the', 'abeljacobi', 'map', 'the', 'domainwall', 'tension', 'is', 'identified', 'with', 'a', 'poincare', 'normal', 'functiona', 'transversal', 'holomorphic', 'section', 'of', 'the', 'griffiths', 'intermediate', 'jacobian', 'within', 'this', 'formalism', 'we', 'derive', 'the', 'extended', 'picardfuchs', 'equation', 'associated', 'with', 'the', 'mirror', 'of', 'the', 'real', 'quintic']] | [-0.21245270403788277, 0.01627068015697755, -0.11875493866963345, 0.17446853767819048, -0.1485768875205203, -0.1678625663431982, -0.031980080572937275, 0.23972808244523772, -0.2830881331761351, -0.20863940369893322, 0.09618320339767818, -0.21343320968413823, -0.19647855873693498, 0.1550928401564689, -0.0976384551582956, 0.032910684033770836, -0.02319351302688582, 0.008594939681260209, -0.1457600481154626, -0.332161740595965, 0.47144745365438756, -0.08291892517815556, 0.21434523678270348, 0.06345859223878697, 0.15912105494154324, -0.02021135371831948, -0.02151757895358299, -0.08680456360442597, -0.147898075121798, 0.15126407940324657, 0.2528011499855079, -0.013075402341456268, 0.014097269559115694, -0.41676187152533156, -0.16861146400895036, 0.14880275095224774, 0.13630572585552408, 0.08371297667914054, 0.02277146594133228, -0.35570388300377026, 0.04213720651572211, -0.1147432085473842, -0.3124580073105008, -0.07440124622039627, -0.0057518938597161, 0.021269598158828, -0.1410040686789312, 0.06860256219576848, 0.017496945785783362, 0.09866884102423985, -0.06421903125418905, -0.04153529240079878, -0.17639332926390985, -0.046197603023692704, 0.03617097108151045, 0.08339469817777474, 0.12165040564631406, -0.14916958273878614, -0.07526294623191158, 0.326595738530159, -0.09313615709042847, -0.2199745480984188, 0.021122737607935017, -0.13435120883054638, -0.1657716008556778, 0.1877581269660017, 0.07648893367303045, 0.1541310028017809, -0.08089872616294183, 0.19250914592728868, -0.053499298964692445, 0.06990727212018612, 0.12914710335705118, -0.10829067769411363, 0.2011968854553344, 0.08809519789524768, 0.0233527842190182, 0.16078589216953046, -0.042325980990937206, -0.1197510192399485, -0.47921079697839003, -0.16763589064251855, -0.07159962168518912, 0.1899261697636623, -0.16024445056131012, -0.13939288158884697, 0.40849358327033225, 0.013707901563560753, 0.220892303802988, 0.06856882394079053, 0.1966165230086629, 0.14738633924392625, 0.07590377077525645, 1.665197410865834e-05, 0.18709872123834334, 0.24547503114547253, 0.07167510197318175, -0.2759572685565473, -0.082059771958085, 0.24127804613753892] |
709.4029 | Self Calibration of Tomographic Weak Lensing for the Physics of Baryons
to Constrain Dark Energy | Numerical studies indicate that uncertainties in the treatment of baryonic
physics can affect predictions for shear power spectra at a level that is
significant for forthcoming surveys such as DES, SNAP, and LSST.
Correspondingly, we show that baryonic effects can significantly bias dark
energy parameter measurements. Eliminating such biases by neglecting
information in multipoles beyond several hundred leads to weaker parameter
constraints by a factor of approximately 2 to 3 compared with using information
out to multipoles of several thousand. Fortunately, the same numerical studies
that explore the influence of baryons indicate that they primarily affect power
spectra by altering halo structure through the relation between halo mass and
mean effective halo concentration. We explore the ability of future weak
lensing surveys to constrain both the internal structures of halos and the
properties of the dark energy simultaneously as a first step toward self
calibrating for the physics of baryons. This greatly reduces parameter biases
and no parameter constraint is degraded by more than 40% in the case of LSST or
30% in the cases of SNAP or DES. Modest prior knowledge of the halo
concentration relation greatly improves even these forecasts. Additionally, we
find that these surveys can constrain effective halo concentrations near
m~10^14 Msun/h and z~0.2 to better than 10% with shear power spectra alone.
These results suggest that inferring dark energy parameters with measurements
of shear power spectra can be made robust to baryonic effects and may
simultaneously be competitive with other methods to inform models of galaxy
formation. (Abridged)
| astro-ph | numerical studies indicate that uncertainties in the treatment of baryonic physics can affect predictions for shear power spectra at a level that is significant for forthcoming surveys such as des snap and lsst correspondingly we show that baryonic effects can significantly bias dark energy parameter measurements eliminating such biases by neglecting information in multipoles beyond several hundred leads to weaker parameter constraints by a factor of approximately 2 to 3 compared with using information out to multipoles of several thousand fortunately the same numerical studies that explore the influence of baryons indicate that they primarily affect power spectra by altering halo structure through the relation between halo mass and mean effective halo concentration we explore the ability of future weak lensing surveys to constrain both the internal structures of halos and the properties of the dark energy simultaneously as a first step toward self calibrating for the physics of baryons this greatly reduces parameter biases and no parameter constraint is degraded by more than 40 in the case of lsst or 30 in the cases of snap or des modest prior knowledge of the halo concentration relation greatly improves even these forecasts additionally we find that these surveys can constrain effective halo concentrations near m1014 msunh and z02 to better than 10 with shear power spectra alone these results suggest that inferring dark energy parameters with measurements of shear power spectra can be made robust to baryonic effects and may simultaneously be competitive with other methods to inform models of galaxy formation abridged | [['numerical', 'studies', 'indicate', 'that', 'uncertainties', 'in', 'the', 'treatment', 'of', 'baryonic', 'physics', 'can', 'affect', 'predictions', 'for', 'shear', 'power', 'spectra', 'at', 'a', 'level', 'that', 'is', 'significant', 'for', 'forthcoming', 'surveys', 'such', 'as', 'des', 'snap', 'and', 'lsst', 'correspondingly', 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709.403 | The Low-z Intergalactic Medium. III. HI and Metal Absorbers at z<0.4 | We conduct an ultraviolet (HST and FUSE) spectroscopic survey of HI (Lyman
lines) and seven metal ions (OVI, NV, CIV, CIII, SiIV, SiIII, FeIII) in the
low-redshift intergalactic medium (IGM) at z<0.4. We analyzed 650 Lya absorbers
over redshift pathlength Delta z=5.27, detecting numerous absorbers: 83 OVI
systems, 39 CIII, 53 SiIII, 24 CIV, 24 NV, and so on. Our survey yields
distributions in column density and estimates of the IGM baryon content and
metallicities of C, N, O in the IGM. In the low-z IGM, we have accounted for
~40% of the baryons: 30% in the photoionized Lya forest and 10% in the
(T=10^5-6 K) warm-hot intergalactic medium (WHIM) traced by OVI. Statistical
metallicities of C, N, O ions are consistent with the canonical (z=0) value of
10% solar, with considerable scatter. Improved statistics for weak OVI
absorbers allows us to estimate Omega_WHIM/Omega_b=0.073+-0.008 down to
logN_OVI=13.4. NV absorption is well-correlated with OVI and both ions show
similarly steep power-law indices dN/dz N^-beta with beta_OVI beta_NV 2 while
beta_HI=1.7. We conclude that OVI and NV are reliable tracers of the portion of
the WHIM at T=10^5-6 K. CIV may be present in both collisional and photoionized
phases; N_CIV correlates poorly with both N_HI and N_OVI and
beta_HI<beta_CIV<beta_OVI. The ions CIII, SiIII, and SiIV are well correlated
with HI and show patterns typical of photoionization. Adjacent ion stages of
the same element (CIII/IV and SiIII/IV) provide useful constraints on the
photoionization parameter, logU=-1.5+-0.5. Comparison of SiIV and CIV with
high-z surveys shows a modest increase in line density, consistent with
increasing IGM metallicity at recent epochs.
| astro-ph | we conduct an ultraviolet hst and fuse spectroscopic survey of hi lyman lines and seven metal ions ovi nv civ ciii siiv siiii feiii in the lowredshift intergalactic medium igm at z04 we analyzed 650 lya absorbers over redshift pathlength delta z527 detecting numerous absorbers 83 ovi systems 39 ciii 53 siiii 24 civ 24 nv and so on our survey yields distributions in column density and estimates of the igm baryon content and metallicities of c n o in the igm in the lowz igm we have accounted for 40 of the baryons 30 in the photoionized lya forest and 10 in the t1056 k warmhot intergalactic medium whim traced by ovi statistical metallicities of c n o ions are consistent with the canonical z0 value of 10 solar with considerable scatter improved statistics for weak ovi absorbers allows us to estimate omega_whimomega_b00730008 down to logn_ovi134 nv absorption is wellcorrelated with ovi and both ions show similarly steep powerlaw indices dndz nbeta with beta_ovi beta_nv 2 while beta_hi17 we conclude that ovi and nv are reliable tracers of the portion of the whim at t1056 k civ may be present in both collisional and photoionized phases n_civ correlates poorly with both n_hi and n_ovi and beta_hibeta_civbeta_ovi the ions ciii siiii and siiv are well correlated with hi and show patterns typical of photoionization adjacent ion stages of the same element ciiiiv and siiiiiv provide useful constraints on the photoionization parameter logu1505 comparison of siiv and civ with highz surveys shows a modest increase in line density consistent with increasing igm metallicity at recent epochs | [['we', 'conduct', 'an', 'ultraviolet', 'hst', 'and', 'fuse', 'spectroscopic', 'survey', 'of', 'hi', 'lyman', 'lines', 'and', 'seven', 'metal', 'ions', 'ovi', 'nv', 'civ', 'ciii', 'siiv', 'siiii', 'feiii', 'in', 'the', 'lowredshift', 'intergalactic', 'medium', 'igm', 'at', 'z04', 'we', 'analyzed', '650', 'lya', 'absorbers', 'over', 'redshift', 'pathlength', 'delta', 'z527', 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709.4031 | Infinite products with strongly $B$-multiplicative exponents | Let $N_{1,B}(n)$ denote the number of ones in the $B$-ary expansion of an
integer $n$. Woods introduced the infinite product $P :=\prod_{n \geq 0}
(\frac{2n+1}{2n+2})^{(-1)^{N_{1,2}(n)}}$ and Robbins proved that $P =
1/\sqrt{2}$. Related products were studied by several authors. We show that a
trick for proving that $P^2 = 1/2$ (knowing that $P$ converges) can be extended
to evaluating new products with (generalized) strongly $B$-multiplicative
exponents. A simple example is $$ \prod_{n \geq 0}
(\frac{Bn+1}{Bn+2})^{(-1)^{N_{1,B}(n)}} = \frac{1}{\sqrt B}. $$
| math.NT | let n_1bn denote the number of ones in the bary expansion of an integer n woods introduced the infinite product p prod_n geq 0 frac2n12n21n_12n and robbins proved that p 1sqrt2 related products were studied by several authors we show that a trick for proving that p2 12 knowing that p converges can be extended to evaluating new products with generalized strongly bmultiplicative exponents a simple example is prod_n geq 0 fracbn1bn21n_1bn frac1sqrt b | [['let', 'n_1bn', 'denote', 'the', 'number', 'of', 'ones', 'in', 'the', 'bary', 'expansion', 'of', 'an', 'integer', 'n', 'woods', 'introduced', 'the', 'infinite', 'product', 'p', 'prod_n', 'geq', '0', 'frac2n12n21n_12n', 'and', 'robbins', 'proved', 'that', 'p', '1sqrt2', 'related', 'products', 'were', 'studied', 'by', 'several', 'authors', 'we', 'show', 'that', 'a', 'trick', 'for', 'proving', 'that', 'p2', '12', 'knowing', 'that', 'p', 'converges', 'can', 'be', 'extended', 'to', 'evaluating', 'new', 'products', 'with', 'generalized', 'strongly', 'bmultiplicative', 'exponents', 'a', 'simple', 'example', 'is', 'prod_n', 'geq', '0', 'fracbn1bn21n_1bn', 'frac1sqrt', 'b']] | [-0.1950069181883419, 0.21005322092436549, -0.06980661128345929, 0.04553535158137634, -0.040742966773572156, -0.23589553116020603, 0.01577410798250947, 0.2779909717656908, -0.27294235402377137, -0.2224793934499399, 0.07214885075661866, -0.3134164308709368, -0.14144383319391227, 0.19160665461504964, -0.046144067690196175, -0.027547227363036553, 0.005614644467410907, 0.09150452270421763, -0.054727213214558194, -0.29993660768992464, 0.26519669857348355, -0.07151901505028331, 0.1453358065599287, 0.04206936275192969, 0.022515191027606036, 0.040802620790741394, 0.006574001687933022, 0.01043697767956576, -0.22302711171526002, 0.060769896678836414, 0.24866185522913722, 0.1254595290725185, 0.27603355463279383, -0.3004062918054176, -0.14792152159334107, 0.2189990743653665, 0.20713495073551444, -0.06074371195437623, 0.02129577120608637, -0.23682533343598036, 0.1835024394619633, -0.1825648525100149, -0.19559616559434315, -0.08632314996301971, 0.12377352965339808, 0.0136551801508791, -0.3435051002421639, 0.012828202045876796, 0.130331318327029, 0.044220644993786244, -0.03454633653623013, -0.2520710245089632, -0.010547883775819776, 0.04963929130708877, -0.004135408323966492, 0.08830113301683269, 0.015333323523034932, -0.03176109009081314, -0.15063484613849243, 0.30540300100307227, -0.06865882371145655, -0.19529915099937312, 0.07907269023847438, -0.18763963947020157, -0.1701554961856717, 0.11149508041710081, 0.06701340804427443, 0.18426982510808698, -0.02333781717371353, 0.1921806847897988, -0.12134002664611793, 0.1116957463271601, 0.1855482894428809, -0.0996258749272412, 0.05492579038451675, 0.013603667197355502, 0.04115467392068855, 0.15093991097266143, 0.026004290065980634, -0.002124736629898699, -0.3031955077247301, -0.17764926036577147, -0.22480588759177586, 0.19019482275602265, -0.12963329099465495, -0.10465063522471456, 0.2716689243073195, 0.049094149796948046, 0.1779264687285037, 0.12386630928065155, 0.14279844530228472, 0.1174580325490572, -0.010767319340514623, 0.10777338127225218, 0.07473557501454169, 0.1717988851899937, -0.006699085206081959, -0.13930098440262004, 0.05235043311045623, 0.16247670448214654] |
709.4032 | High-resolution saturation spectroscopy of singly-ionized iron with a
pulsed uv laser | We describe the design and realization of a scheme for uv laser spectroscopy
of singly-ionized iron (Fe II) with very high resolution. A buffer-gas cooled
laser ablation source is used to provide a plasma close to room temperature
with a high density of Fe II. We combine this with a scheme for pulsed-laser
saturation spectroscopy to yield sub-Doppler resolution. In a demonstration
experiment, we have examined an Fe II transition near 260 nm, attaining a
linewidth of about 250 MHz. The method is well-suited to measuring transition
frequencies and hyperfine structure. It could also be used to measure small
isotope shifts in isotope-enriched samples.
| physics.atom-ph | we describe the design and realization of a scheme for uv laser spectroscopy of singlyionized iron fe ii with very high resolution a buffergas cooled laser ablation source is used to provide a plasma close to room temperature with a high density of fe ii we combine this with a scheme for pulsedlaser saturation spectroscopy to yield subdoppler resolution in a demonstration experiment we have examined an fe ii transition near 260 nm attaining a linewidth of about 250 mhz the method is wellsuited to measuring transition frequencies and hyperfine structure it could also be used to measure small isotope shifts in isotopeenriched samples | [['we', 'describe', 'the', 'design', 'and', 'realization', 'of', 'a', 'scheme', 'for', 'uv', 'laser', 'spectroscopy', 'of', 'singlyionized', 'iron', 'fe', 'ii', 'with', 'very', 'high', 'resolution', 'a', 'buffergas', 'cooled', 'laser', 'ablation', 'source', 'is', 'used', 'to', 'provide', 'a', 'plasma', 'close', 'to', 'room', 'temperature', 'with', 'a', 'high', 'density', 'of', 'fe', 'ii', 'we', 'combine', 'this', 'with', 'a', 'scheme', 'for', 'pulsedlaser', 'saturation', 'spectroscopy', 'to', 'yield', 'subdoppler', 'resolution', 'in', 'a', 'demonstration', 'experiment', 'we', 'have', 'examined', 'an', 'fe', 'ii', 'transition', 'near', '260', 'nm', 'attaining', 'a', 'linewidth', 'of', 'about', '250', 'mhz', 'the', 'method', 'is', 'wellsuited', 'to', 'measuring', 'transition', 'frequencies', 'and', 'hyperfine', 'structure', 'it', 'could', 'also', 'be', 'used', 'to', 'measure', 'small', 'isotope', 'shifts', 'in', 'isotopeenriched', 'samples']] | [-0.023187904441818737, 0.1683995887210935, -0.035548185338624395, 0.008986077908328017, -0.016705592753938757, -0.1873105148686311, 0.0904080916616994, 0.5220601054338309, -0.20332481829189838, -0.32027963779042834, 0.039814568565746486, -0.2849028447481732, 0.012548016426780332, 0.20319799042772502, 0.0084516828870759, -0.01021939704570776, 0.014151251430470997, -0.052713593062575316, -0.07168230220514278, -0.1378582090322967, 0.223231875046622, 0.14379240457380477, 0.3066079440669945, 0.08924231511628022, 0.11719991212101796, -0.10809189839234862, 0.06294809307795592, 0.00433304906786921, -0.15349829759571337, 0.08666298701875629, 0.2914985200578275, 0.05482830913835922, 0.23472863863571547, -0.35460765893535257, -0.18539226152587127, 0.03232187406571869, 0.10200338479570256, 0.16396298256810182, -0.10093740201017891, -0.248357325568437, 0.07923207107859735, -0.12199409268438242, -0.15524409151671884, -0.07609283364413735, -0.018607041312721916, 0.007617254889247796, -0.30045568508537074, 0.00016134474264198126, -0.012901004685912855, 0.14378982666844073, -0.08325250648284474, -0.095328488584178, 0.03421050016913796, 0.0334143810860741, -0.07573314738692716, 0.04661162900559317, 0.17413190432125703, -0.049811938632046804, -0.03566678042093722, 0.37859636049072903, -0.1613805734064394, -0.011547273132376946, 0.1861358945741533, -0.20677926634492066, -0.07596855559117663, 0.25561502125436586, 0.11855963028322619, 0.1464600251358486, -0.10526583274846556, -0.0079597333152868, 0.043938955922315545, 0.27458715870363026, 0.11557388453869723, 0.08445056386363621, 0.19907637771505576, 0.2248043205248765, 0.027893240037463747, 0.12291775809381551, -0.21777937493663138, 0.04125837726930443, -0.23892891309179293, -0.16228897274077797, -0.14714182275033985, 0.06904906288904246, -0.03349716349279893, -0.14290758142641818, 0.3345420880025883, 0.15720358255426758, 0.21463394647714898, -0.06510964944922867, 0.2941357000113035, 0.11940912615794402, 0.06223712173931954, -0.0016341648297384381, 0.25539470640405154, 0.21875350131393553, 0.15161204020170352, -0.28805483987805647, 0.010487792936216395, -0.02267979127757896] |
709.4033 | Large Winding Sector of AdS/CFT | We study a family of classical strings on R x S^3 subspace of the AdS_5 x S^5
background that interpolates between pulsating strings and single-spike
strings. They are obtained from the helical strings of hep-th/0609026 by
interchanging worldsheet time and space coordinates, which maps
rotating/spinning string states with large spins to oscillating states with
large winding numbers. From a finite-gap perspective, this transformation is
realised as an interchange of quasi-momentum and quasi-energy defined for the
algebraic curve. The gauge theory duals are also discussed, and are identified
with operators in the non-holomorphic sector of N=4 super Yang-Mills. They can
be viewed as excited states above the ``antiferromagnetic'' state, which is
``the farthest from BPS'' in the spin-chain spectrum. Furthermore, we
investigate helical strings on AdS_3 x S^1 in an appendix.
| hep-th | we study a family of classical strings on r x s3 subspace of the ads_5 x s5 background that interpolates between pulsating strings and singlespike strings they are obtained from the helical strings of hepth0609026 by interchanging worldsheet time and space coordinates which maps rotatingspinning string states with large spins to oscillating states with large winding numbers from a finitegap perspective this transformation is realised as an interchange of quasimomentum and quasienergy defined for the algebraic curve the gauge theory duals are also discussed and are identified with operators in the nonholomorphic sector of n4 super yangmills they can be viewed as excited states above the antiferromagnetic state which is the farthest from bps in the spinchain spectrum furthermore we investigate helical strings on ads_3 x s1 in an appendix | [['we', 'study', 'a', 'family', 'of', 'classical', 'strings', 'on', 'r', 'x', 's3', 'subspace', 'of', 'the', 'ads_5', 'x', 's5', 'background', 'that', 'interpolates', 'between', 'pulsating', 'strings', 'and', 'singlespike', 'strings', 'they', 'are', 'obtained', 'from', 'the', 'helical', 'strings', 'of', 'hepth0609026', 'by', 'interchanging', 'worldsheet', 'time', 'and', 'space', 'coordinates', 'which', 'maps', 'rotatingspinning', 'string', 'states', 'with', 'large', 'spins', 'to', 'oscillating', 'states', 'with', 'large', 'winding', 'numbers', 'from', 'a', 'finitegap', 'perspective', 'this', 'transformation', 'is', 'realised', 'as', 'an', 'interchange', 'of', 'quasimomentum', 'and', 'quasienergy', 'defined', 'for', 'the', 'algebraic', 'curve', 'the', 'gauge', 'theory', 'duals', 'are', 'also', 'discussed', 'and', 'are', 'identified', 'with', 'operators', 'in', 'the', 'nonholomorphic', 'sector', 'of', 'n4', 'super', 'yangmills', 'they', 'can', 'be', 'viewed', 'as', 'excited', 'states', 'above', 'the', 'antiferromagnetic', 'state', 'which', 'is', 'the', 'farthest', 'from', 'bps', 'in', 'the', 'spinchain', 'spectrum', 'furthermore', 'we', 'investigate', 'helical', 'strings', 'on', 'ads_3', 'x', 's1', 'in', 'an', 'appendix']] | [-0.20927783834486036, 0.23349749817339216, -0.05797847666690359, 0.11133525569402991, -0.037210656564639066, -0.1414707249496132, 0.007671482972909871, 0.34096319442323875, -0.2426825909424224, -0.23566511675016955, 0.0946912853687536, -0.3214853039535228, -0.10324830327590462, 0.14339189340535086, -0.03711018838293967, 0.011226387672650162, 0.012270455898033106, 0.07761759680943214, -0.1188543848147674, -0.2258690778444361, 0.31806443702942033, -0.022291647663223557, 0.2548651480119588, -0.030155563130392693, 0.09221748705749633, -0.008871382799043204, 0.04680640046717599, -0.016156151818222497, -0.11740898686758783, 0.10475031215219133, 0.266514233462658, 0.06079066941674682, 0.04764695686753839, -0.4532087129118736, -0.18040908916736953, 0.07733415850816527, 0.20997501710007782, 0.10855900275601016, 0.036031597503097146, -0.3335084389655094, 0.03557786592136836, -0.12958642197554582, -0.1533734372728759, -0.08338152449687186, 0.056564864091342315, -0.01941653781432251, -0.19742915055758203, 0.04327674526561509, 0.026839257197934785, 0.03844723413931206, -0.04647776359706768, -0.07125065190757596, -0.11874939178596833, 0.06725390657084063, 0.13437220318155596, 0.14045254158736498, 0.09150746559316758, -0.135594531237075, -0.16010952781653032, 0.3140419860478687, -0.07937493803183315, -0.22518941599992104, 0.130779663730209, -0.1564937338080199, -0.1610255705891177, 0.1173038162451121, 0.09818429788538197, 0.16047336686460767, -0.0843842666799901, 0.20729029022731993, -0.08021331804047804, 0.14499699227599194, 0.13192171226182836, 0.09257549724497949, 0.2981208298660931, 0.06975180271001591, 0.027138331377500435, 0.19499896877005085, -0.05899069763472653, -0.10836959056541673, -0.3897301790129859, -0.11839800559027935, -0.16904439378413372, 0.13354283193621086, -0.11502804419569657, -0.1906151640432654, 0.3719758688166621, 0.028354010789826134, 0.21916231470459024, 0.026180659513556748, 0.1356679249147419, 0.09504693956660049, 0.017104282473155763, 0.09643671052072023, 0.1724877948699941, 0.15461722671352618, 0.04392447056306992, -0.20702686999447906, -0.13981928202338167, 0.1808263676957722] |
709.4034 | Search for Proton Medium Modifications in the 4He(e,e'p)3H Reaction | Polarization transfer in quasi-elastic nucleon knockout is sensitive to the
properties of the nucleon in the nuclear medium, including possible
modification of the nucleon form factor and/or spinor. In our recently
completed experiment E03-104 at Jefferson Lab we measured the proton recoil
polarization in the 4He(e,e'p)3H reaction at a Q^2 of 0.8 (GeV/c)^2 and 1.3
(GeV/c)^2 with unprecedented precision. These data complement earlier data
between 0.4 and 2.6 (GeV/c)^2 from both Mainz and Jefferson Lab. The measured
ratio of polarization-transfer coefficients differs from a fully relativistic
calculation, favoring either the inclusion of a medium modification of the
proton form factors predicted by a quark-meson coupling model or strong
charge-exchange final-state interactions. The measured induced polarizations
agree well with the fully relativistic calculation and indicate that these
strong final-state interactions may not be applicable.
| nucl-ex | polarization transfer in quasielastic nucleon knockout is sensitive to the properties of the nucleon in the nuclear medium including possible modification of the nucleon form factor andor spinor in our recently completed experiment e03104 at jefferson lab we measured the proton recoil polarization in the 4heeep3h reaction at a q2 of 08 gevc2 and 13 gevc2 with unprecedented precision these data complement earlier data between 04 and 26 gevc2 from both mainz and jefferson lab the measured ratio of polarizationtransfer coefficients differs from a fully relativistic calculation favoring either the inclusion of a medium modification of the proton form factors predicted by a quarkmeson coupling model or strong chargeexchange finalstate interactions the measured induced polarizations agree well with the fully relativistic calculation and indicate that these strong finalstate interactions may not be applicable | [['polarization', 'transfer', 'in', 'quasielastic', 'nucleon', 'knockout', 'is', 'sensitive', 'to', 'the', 'properties', 'of', 'the', 'nucleon', 'in', 'the', 'nuclear', 'medium', 'including', 'possible', 'modification', 'of', 'the', 'nucleon', 'form', 'factor', 'andor', 'spinor', 'in', 'our', 'recently', 'completed', 'experiment', 'e03104', 'at', 'jefferson', 'lab', 'we', 'measured', 'the', 'proton', 'recoil', 'polarization', 'in', 'the', '4heeep3h', 'reaction', 'at', 'a', 'q2', 'of', '08', 'gevc2', 'and', '13', 'gevc2', 'with', 'unprecedented', 'precision', 'these', 'data', 'complement', 'earlier', 'data', 'between', '04', 'and', '26', 'gevc2', 'from', 'both', 'mainz', 'and', 'jefferson', 'lab', 'the', 'measured', 'ratio', 'of', 'polarizationtransfer', 'coefficients', 'differs', 'from', 'a', 'fully', 'relativistic', 'calculation', 'favoring', 'either', 'the', 'inclusion', 'of', 'a', 'medium', 'modification', 'of', 'the', 'proton', 'form', 'factors', 'predicted', 'by', 'a', 'quarkmeson', 'coupling', 'model', 'or', 'strong', 'chargeexchange', 'finalstate', 'interactions', 'the', 'measured', 'induced', 'polarizations', 'agree', 'well', 'with', 'the', 'fully', 'relativistic', 'calculation', 'and', 'indicate', 'that', 'these', 'strong', 'finalstate', 'interactions', 'may', 'not', 'be', 'applicable']] | [-0.05247079485745512, 0.23186238722077437, -0.07600391299671255, 0.08810637426769179, -0.043169430292498576, -0.07918152391570936, 0.0192689013376804, 0.34781271723428164, -0.17462749202224545, -0.32441763928566214, -0.09711531357125457, -0.3461469068170938, 0.03135354133651949, 0.13567793055234434, 0.1381901136697515, 0.05848131665637843, 0.0837694131244058, -0.024005002923365822, -0.07480880195542791, -0.1321347365129557, 0.31083374081443843, 0.12690232246694036, 0.25297480616438434, 0.17552637232159427, 0.10485967685104369, 0.07278889394540311, -0.05360112880895797, -0.023712658971071915, -0.08610984917295286, 0.032018026067434174, 0.28645422277425914, 0.02527842022604624, 0.09483147853691327, -0.39064603389934044, -0.12168979235571158, 0.04941969690494295, 0.09244986673067779, 0.10380802639318924, -0.06609022214525569, -0.30288221216515493, 0.019645643462531996, -0.26671265480213596, -0.13720952962609217, -0.07875516339156188, -0.018570555575346027, 0.0017511983773201927, -0.3175070729015633, 0.11208878167995945, -0.031155993397823795, 0.06909222467417332, -0.07752200128524599, -0.2580737794112218, -0.0006824996746040153, 0.04033128642897241, 0.05558401059544876, 0.14947978209435442, 0.18522331382224994, -0.16151898526201458, -0.11723513445900963, 0.407118979253267, -0.054297992994630694, -0.14058552621566178, 0.11087269302373542, -0.29469050730655627, -0.10914034623288571, 0.18312510653027803, 0.20257987261616758, 0.06278876135304318, -0.18640707469636336, 0.054555092558362765, -0.02771449348840274, 0.20667290386806866, 0.11690122282650686, 0.010810814794377052, 0.14676603752615533, 0.15195024799629064, -0.08107279979140687, -0.0037132205924761473, -0.12638356731294242, -0.06363882673457895, -0.34473796337282747, -0.05616155434119746, -0.08987207725360513, 0.10923739612162467, -0.060493215224863194, -0.016373806839626758, 0.32544407817312776, 0.06569601537719284, 0.24138735400519817, -0.03756160083352903, 0.3126857892778191, 0.07409145246886585, 0.11200701564732463, 0.03358851237348596, 0.36217676991722864, 0.20726389442990653, 0.12948902844297314, -0.2632512638881046, 0.07698383112569318, -0.029559718334983467] |
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