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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707.413 | Study of the process e+e- -> omega p0 with the KLOE detector | Using ~600 pb-1 collected with the KLOE detector at DAPhiNE, we have studied
the production cross section of pi+ pi- pi0 pi0 and p0p0 gamma final states in
e+e- collisions at center of mass energies between 1000 and 1030 MeV. By
fitting the observed interference pattern around Mphi for both final states, we
extract a measurement (preliminary) for the ratio Gamma(omega -> pi0
gamma)/Gamma(omega -> pi+ pi- pi0) = 0.0934 +- 0.0022. Since these two final
states represent the 98% of the omega decay channels, we use unitarity to
derive BR(omega -> pi+pi-pi0)= (89.94 +- 0.23)% and BR(omega -> pi0 gamma) =
(8.40 +- 0.19)%. Moreover, the parameters describing the e+e- -> pi+ pi- pi0
pi0 reaction around Mphi are used to extract the branching fraction for the OZI
and G-parity violating phi -> omega pi0 decay: BR(phi -> omega pi0) = (5.63 +-
0.70) x 10^-5.
| hep-ex | using 600 pb1 collected with the kloe detector at daphine we have studied the production cross section of pi pi pi0 pi0 and p0p0 gamma final states in ee collisions at center of mass energies between 1000 and 1030 mev by fitting the observed interference pattern around mphi for both final states we extract a measurement preliminary for the ratio gammaomega pi0 gammagammaomega pi pi pi0 00934 00022 since these two final states represent the 98 of the omega decay channels we use unitarity to derive bromega pipipi0 8994 023 and bromega pi0 gamma 840 019 moreover the parameters describing the ee pi pi pi0 pi0 reaction around mphi are used to extract the branching fraction for the ozi and gparity violating phi omega pi0 decay brphi omega pi0 563 070 x 105 | [['using', '600', 'pb1', 'collected', 'with', 'the', 'kloe', 'detector', 'at', 'daphine', 'we', 'have', 'studied', 'the', 'production', 'cross', 'section', 'of', 'pi', 'pi', 'pi0', 'pi0', 'and', 'p0p0', 'gamma', 'final', 'states', 'in', 'ee', 'collisions', 'at', 'center', 'of', 'mass', 'energies', 'between', '1000', 'and', '1030', 'mev', 'by', 'fitting', 'the', 'observed', 'interference', 'pattern', 'around', 'mphi', 'for', 'both', 'final', 'states', 'we', 'extract', 'a', 'measurement', 'preliminary', 'for', 'the', 'ratio', 'gammaomega', 'pi0', 'gammagammaomega', 'pi', 'pi', 'pi0', '00934', '00022', 'since', 'these', 'two', 'final', 'states', 'represent', 'the', '98', 'of', 'the', 'omega', 'decay', 'channels', 'we', 'use', 'unitarity', 'to', 'derive', 'bromega', 'pipipi0', '8994', '023', 'and', 'bromega', 'pi0', 'gamma', '840', '019', 'moreover', 'the', 'parameters', 'describing', 'the', 'ee', 'pi', 'pi', 'pi0', 'pi0', 'reaction', 'around', 'mphi', 'are', 'used', 'to', 'extract', 'the', 'branching', 'fraction', 'for', 'the', 'ozi', 'and', 'gparity', 'violating', 'phi', 'omega', 'pi0', 'decay', 'brphi', 'omega', 'pi0', '563', '070', 'x', '105']] | [-0.1028443339696811, 0.2738830819798186, -0.10129023165926662, 0.0807123949765697, 0.003242589198296543, -0.12698212648965707, 0.1453588788953516, 0.26132987845371397, -0.16808622802766546, -0.2501952658076193, -0.13240221590110526, -0.4601615625180939, 0.11927921336880604, 0.12934317660803163, 0.16890086956834782, 0.15261021269442038, 0.11765644465962988, 0.039203669081709185, -0.045543927328422835, -0.10028642215296742, 0.21605010106148878, 0.025526304866454397, 0.23697017957709093, 0.10419923079366139, -0.01846692564918898, 0.04965265044155567, -0.026082217929318058, -0.1709866839959178, -0.23245575464179002, -0.0164807161865413, 0.2932276830651126, 0.07459762941887096, 0.03920820843457252, -0.26102233026898647, 0.03614508633523486, 0.17220361252466954, 0.18380994402059866, -0.06500844750463125, 0.015752192601099495, -0.4142607508386059, 0.18839832717487806, -0.18708596250778714, -0.04433208312063167, -0.02615263488490221, 0.11002002208847408, -0.15686777958920758, -0.34561825439680455, 0.11320119662672397, -0.09684597221455833, 0.05832062039389853, -0.02469078664191414, -0.32427664026040437, -0.023500413890177197, -0.02398259747527944, 0.06615295856205165, 0.19155478153974287, 0.21779398804588257, -0.05473487612578382, -0.13292488959697327, 0.36922960604230565, -0.034053651016754234, -0.18052162136160588, 0.0708191462778017, -0.2383888954072902, -0.1362983082699077, 0.277452328072702, 0.2187806928653068, 0.0158571089877812, -0.1877409901989754, 0.09133469744931993, 0.013335507532740517, 0.21403032040779385, 0.19609922782135333, 0.04496624268744932, 0.11721671151553187, 0.15251222117118132, -0.06284326321559114, 0.0345026106075492, -0.19784759763310583, -0.0035354052634202233, -0.3861636145459127, -0.10954862280727126, 0.005592871199239248, 0.16840244463081797, -0.04479695896955582, 0.018147690911134776, 0.28575869835191225, -0.032541058484695906, 0.3861636977007454, 0.010536617969429885, 0.2702879709328792, 0.12244907584377067, -0.02770351147091435, 0.09671723385623028, 0.30339602672661, 0.23112343088001763, 0.13010575507078032, -0.28764708496110386, 0.037690893487008506, -0.05640834001030109] |
707.4131 | Formation of MnI lines in the solar atmosphere | We present a detailed NLTE analysis of 39 MnI lines in the solar spectrum.
The influence of NLTE effects on the line formation and element abundance is
investigated. Our goal is the derivation of solar log gfe values for manganese
lines, which will later be used in differential abundance analysis of
metal-poor stars. The method of spectrum synthesis is employed, which is based
on a solar model atmosphere with initially specified element abundances. A
manganese abundance of 5.47 dex is used with the theoretical line-blanketed
model atmosphere. Statistical equilibrium calculations are carried out for the
model atom, which comprises 245 and 213 levels for MnI and MnII, respectively.
Photoionization cross-sections are assumed hydrogenic. For line synthesis van
der Waals broadening is calculated according to Anstee & O'Mara's formalism. It
is shown that hyperfine structure of the Mn lines also has strong broadening
effects, and that manganese is prone to NLTE effects in the solar atmosphere.
The nature of the NLTE effects and the validity of the LTE approach are
discussed in detail. The role of photoionization and collisional interaction is
investigated.
| astro-ph | we present a detailed nlte analysis of 39 mni lines in the solar spectrum the influence of nlte effects on the line formation and element abundance is investigated our goal is the derivation of solar log gfe values for manganese lines which will later be used in differential abundance analysis of metalpoor stars the method of spectrum synthesis is employed which is based on a solar model atmosphere with initially specified element abundances a manganese abundance of 547 dex is used with the theoretical lineblanketed model atmosphere statistical equilibrium calculations are carried out for the model atom which comprises 245 and 213 levels for mni and mnii respectively photoionization crosssections are assumed hydrogenic for line synthesis van der waals broadening is calculated according to anstee omaras formalism it is shown that hyperfine structure of the mn lines also has strong broadening effects and that manganese is prone to nlte effects in the solar atmosphere the nature of the nlte effects and the validity of the lte approach are discussed in detail the role of photoionization and collisional interaction is investigated | [['we', 'present', 'a', 'detailed', 'nlte', 'analysis', 'of', '39', 'mni', 'lines', 'in', 'the', 'solar', 'spectrum', 'the', 'influence', 'of', 'nlte', 'effects', 'on', 'the', 'line', 'formation', 'and', 'element', 'abundance', 'is', 'investigated', 'our', 'goal', 'is', 'the', 'derivation', 'of', 'solar', 'log', 'gfe', 'values', 'for', 'manganese', 'lines', 'which', 'will', 'later', 'be', 'used', 'in', 'differential', 'abundance', 'analysis', 'of', 'metalpoor', 'stars', 'the', 'method', 'of', 'spectrum', 'synthesis', 'is', 'employed', 'which', 'is', 'based', 'on', 'a', 'solar', 'model', 'atmosphere', 'with', 'initially', 'specified', 'element', 'abundances', 'a', 'manganese', 'abundance', 'of', '547', 'dex', 'is', 'used', 'with', 'the', 'theoretical', 'lineblanketed', 'model', 'atmosphere', 'statistical', 'equilibrium', 'calculations', 'are', 'carried', 'out', 'for', 'the', 'model', 'atom', 'which', 'comprises', '245', 'and', '213', 'levels', 'for', 'mni', 'and', 'mnii', 'respectively', 'photoionization', 'crosssections', 'are', 'assumed', 'hydrogenic', 'for', 'line', 'synthesis', 'van', 'der', 'waals', 'broadening', 'is', 'calculated', 'according', 'to', 'anstee', 'omaras', 'formalism', 'it', 'is', 'shown', 'that', 'hyperfine', 'structure', 'of', 'the', 'mn', 'lines', 'also', 'has', 'strong', 'broadening', 'effects', 'and', 'that', 'manganese', 'is', 'prone', 'to', 'nlte', 'effects', 'in', 'the', 'solar', 'atmosphere', 'the', 'nature', 'of', 'the', 'nlte', 'effects', 'and', 'the', 'validity', 'of', 'the', 'lte', 'approach', 'are', 'discussed', 'in', 'detail', 'the', 'role', 'of', 'photoionization', 'and', 'collisional', 'interaction', 'is', 'investigated']] | [-0.026397565254868742, 0.07489207056585137, -0.007197809470661359, 0.07944667440846916, 0.009562774874171107, -0.10244370625723757, 0.04159074775710723, 0.40649101652390995, -0.13846409877543675, -0.34403685174424553, -0.0091393976160143, -0.31580023151723535, -0.03887684135463651, 0.15410317433737844, 0.003882690483714615, 0.012252895535550642, 0.07707818571280417, -0.07756194021349887, -0.02262096954821791, -0.22000517697442926, 0.3000412400078299, 0.11336484769952364, 0.20466348499855724, 0.060421301433088145, -0.0388354066754145, -0.10760688918314916, -0.016527424743346994, 0.025797012978382657, -0.158507904696409, 0.08292386760446113, 0.22355498998931886, 0.068820862038394, 0.1972132279711916, -0.3987245994760504, -0.24523474018001024, -0.005197068613917468, 0.14177250728796773, 0.1075846967111763, -0.07443839458972423, -0.2286897308333626, 0.0523494065572721, -0.14787090819474705, -0.11243030116581176, 0.009609781801388417, 0.03158211800420667, 0.012933067301048913, -0.30253275471262103, 0.05713353469995808, 0.04653607924630106, 0.1486919575520676, -0.10928155175152016, -0.1886133446264492, -0.11509429471301924, 0.08478379799001044, -0.034530796269319076, -0.0549476394617108, 0.17436889802136943, -0.00369728637037164, -0.0002520741249679187, 0.4752584859434848, -0.13488471259066429, -0.08581111969832102, 0.13541675427429087, -0.12386379198186807, -0.16454959402183414, 0.1554508177828897, 0.10290792351588607, 0.14558218219759744, -0.17469900703433558, 0.0913686472877038, 0.002398231235858282, 0.22619420447251526, 0.027615307229336913, 0.007514748460868134, 0.2274221763630689, 0.14228680568055235, -0.022903127341489592, 0.047684650947847115, -0.17778749353455264, -0.1206748526889373, -0.21605113022518474, -0.15479835963341118, -0.09485575049470424, 0.07359017991570121, -0.06515935999318546, -0.19810052052209826, 0.3618147111050368, 0.16623070751779906, 0.1461025585404821, -0.05619666164197215, 0.2927737690458938, 0.1455407557188268, 0.02227232591951443, 0.04319580478786215, 0.3009152545661317, 0.25422721065830584, 0.10732166134094163, -0.30453522677153516, 0.12192451878705754, 0.09032856818553914] |
707.4132 | Comment on "On an identity for the volume integral of the square of a
vector field" | Stewart has provided a position-space derivation of an identity for the
volume integral of the square of a vector field that was quoted by Gubarev,
Stodolsky and Zakharov. In this comment, I provide a momentum-space derivation
of this result, generalized to the scalar product of two complex vector fields.
This approach demonstrates the effective use of the Fourier transform technique
in the context of vector analysis at a level suitable for undergraduate
instruction.
| physics.class-ph physics.ed-ph | stewart has provided a positionspace derivation of an identity for the volume integral of the square of a vector field that was quoted by gubarev stodolsky and zakharov in this comment i provide a momentumspace derivation of this result generalized to the scalar product of two complex vector fields this approach demonstrates the effective use of the fourier transform technique in the context of vector analysis at a level suitable for undergraduate instruction | [['stewart', 'has', 'provided', 'a', 'positionspace', 'derivation', 'of', 'an', 'identity', 'for', 'the', 'volume', 'integral', 'of', 'the', 'square', 'of', 'a', 'vector', 'field', 'that', 'was', 'quoted', 'by', 'gubarev', 'stodolsky', 'and', 'zakharov', 'in', 'this', 'comment', 'i', 'provide', 'a', 'momentumspace', 'derivation', 'of', 'this', 'result', 'generalized', 'to', 'the', 'scalar', 'product', 'of', 'two', 'complex', 'vector', 'fields', 'this', 'approach', 'demonstrates', 'the', 'effective', 'use', 'of', 'the', 'fourier', 'transform', 'technique', 'in', 'the', 'context', 'of', 'vector', 'analysis', 'at', 'a', 'level', 'suitable', 'for', 'undergraduate', 'instruction']] | [-0.13893370526946253, 0.0725481029320589, -0.1340773881206082, 0.06426198394587522, -0.10212650401000348, -0.07148743859337021, 0.020865690121556528, 0.2864949446844144, -0.21353514471815693, -0.2500320973599123, 0.07720797958124119, -0.21380622520680642, -0.17596110212616622, 0.19497583096057902, -0.01734299722334577, 0.006429236899647448, 0.047969528551523886, 0.08229927565722998, -0.08707016544455352, -0.25106485596754485, 0.35157446480459636, 0.047438931643329046, 0.2593811901493205, 0.05410273401907438, 0.14672999078175053, 0.08516151034725933, -0.091821266635735, -0.016355009600778833, -0.10872270984742095, 0.17973426047764304, 0.21569939292708618, 0.1375749827000416, 0.3025826234111769, -0.37970408021161955, -0.17543159770300715, 0.0393708253137043, 0.10553505476046768, 0.09175279849700423, -0.03960888285655528, -0.2864474789498167, 0.06293297238234016, -0.17267965266688, -0.17264467878137818, -0.08704930151644577, 0.02969305979301377, -0.027444022465109203, -0.27536995301488787, 0.06675054016320953, 0.08420674239783289, 0.11139548117514803, -0.0687408460653387, -0.13135098945996207, 0.05382375450588168, 0.0516057051330184, 0.025961772305890918, 0.07660722696851331, 0.07465262929650231, -0.11587925795012982, -0.1115147295204224, 0.36739122518338263, -0.10283237061553842, -0.245370984944101, 0.10327773185498598, -0.12818249088013545, -0.12559704966325727, 0.0976209974097502, 0.14502528613795423, 0.07845639247938783, -0.16757031976400563, 0.14631801397303612, -0.05578872477377041, 0.10427619912661612, 0.05776385268351684, -0.016663543588947505, 0.16533870097353226, 0.12380355375999999, 0.028399002185324207, 0.13766356740234187, -0.06392444870693402, -0.06272797435910131, -0.3627789719030261, -0.25235899770632386, -0.20580983515699497, 0.061205484139564864, -0.0861416311104727, -0.17569648804945043, 0.41327467146846986, 0.13516183668333623, 0.153497199062258, 0.017089342801935144, 0.28527491822994006, 0.17916941369185224, 0.05186963876864562, 0.023962882450885244, 0.21879329246520582, 0.1824629853977563, 0.14181892287969175, -0.17265601701930994, -0.06637732544267136, 0.1310276822057656] |
707.4133 | Multiuser Successive Refinement and Multiple Description Coding | We consider the multiuser successive refinement (MSR) problem, where the
users are connected to a central server via links with different noiseless
capacities, and each user wishes to reconstruct in a successive-refinement
fashion. An achievable region is given for the two-user two-layer case and it
provides the complete rate-distortion region for the Gaussian source under the
MSE distortion measure. The key observation is that this problem includes the
multiple description (MD) problem (with two descriptions) as a subsystem, and
the techniques useful in the MD problem can be extended to this case. We show
that the coding scheme based on the universality of random binning is
sub-optimal, because multiple Gaussian side informations only at the decoders
do incur performance loss, in contrast to the case of single side information
at the decoder. We further show that unlike the single user case, when there
are multiple users, the loss of performance by a multistage coding approach can
be unbounded for the Gaussian source. The result suggests that in such a
setting, the benefit of using successive refinement is not likely to justify
the accompanying performance loss. The MSR problem is also related to the
source coding problem where each decoder has its individual side information,
while the encoder has the complete set of the side informations. The MSR
problem further includes several variations of the MD problem, for which the
specialization of the general result is investigated and the implication is
discussed.
| cs.IT math.IT | we consider the multiuser successive refinement msr problem where the users are connected to a central server via links with different noiseless capacities and each user wishes to reconstruct in a successiverefinement fashion an achievable region is given for the twouser twolayer case and it provides the complete ratedistortion region for the gaussian source under the mse distortion measure the key observation is that this problem includes the multiple description md problem with two descriptions as a subsystem and the techniques useful in the md problem can be extended to this case we show that the coding scheme based on the universality of random binning is suboptimal because multiple gaussian side informations only at the decoders do incur performance loss in contrast to the case of single side information at the decoder we further show that unlike the single user case when there are multiple users the loss of performance by a multistage coding approach can be unbounded for the gaussian source the result suggests that in such a setting the benefit of using successive refinement is not likely to justify the accompanying performance loss the msr problem is also related to the source coding problem where each decoder has its individual side information while the encoder has the complete set of the side informations the msr problem further includes several variations of the md problem for which the specialization of the general result is investigated and the implication is discussed | [['we', 'consider', 'the', 'multiuser', 'successive', 'refinement', 'msr', 'problem', 'where', 'the', 'users', 'are', 'connected', 'to', 'a', 'central', 'server', 'via', 'links', 'with', 'different', 'noiseless', 'capacities', 'and', 'each', 'user', 'wishes', 'to', 'reconstruct', 'in', 'a', 'successiverefinement', 'fashion', 'an', 'achievable', 'region', 'is', 'given', 'for', 'the', 'twouser', 'twolayer', 'case', 'and', 'it', 'provides', 'the', 'complete', 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707.4134 | Splicing and the SL(2,C) Casson invariant | We establish a formula for the SL(2,C) Casson invariant of spliced sums of
homology spheres along knots. Along the way, we show that the SL(2,C) Casson
invariant vanishes for spliced sums along knots in the 3-sphere.
| math.GT | we establish a formula for the sl2c casson invariant of spliced sums of homology spheres along knots along the way we show that the sl2c casson invariant vanishes for spliced sums along knots in the 3sphere | [['we', 'establish', 'a', 'formula', 'for', 'the', 'sl2c', 'casson', 'invariant', 'of', 'spliced', 'sums', 'of', 'homology', 'spheres', 'along', 'knots', 'along', 'the', 'way', 'we', 'show', 'that', 'the', 'sl2c', 'casson', 'invariant', 'vanishes', 'for', 'spliced', 'sums', 'along', 'knots', 'in', 'the', '3sphere']] | [-0.3787333222830461, 0.10619010558972757, -0.18022575845114058, 0.09850452000844395, -0.07677358497555058, -0.1399372474471521, -0.027051349222246144, 0.39647472608420586, -0.3191273807703207, -0.20239052766313156, 0.024926605010275833, -0.22808851436194447, -0.1689302229658804, 0.1737270707057582, -0.1490518184016562, 0.024294084041482873, 0.0908947662747879, 0.043645626968807645, -0.1072983992117871, -0.24508331871281067, 0.34089696904023487, -0.09843942885183626, 0.17176486934638685, 0.0918275556113157, 0.14923304557386372, 0.02376969370784031, -0.07589415760917796, -0.08036429450536768, -0.23095737199219002, 0.12435847112081116, 0.22068019211292267, -0.07433756264961427, 0.01915076706144545, -0.3662987568726142, -0.06979219258452456, 0.11280724401068357, 0.2671081438764102, -0.03764582425355911, 0.0059872407000511885, -0.30376543280565077, 0.06586734585774441, -0.1588874367169208, -0.19256960246194568, -0.06429247516724798, 0.02947739449640115, -0.0031693686420718827, -0.09635872965575093, 0.05408507331998812, 0.07557166310855085, 0.13152354029524657, -0.04341160989780393, -0.08723168719249468, -0.03647633124556807, 0.16370242258482096, 0.15113729583875588, 0.09475742151132888, 0.14660705271590915, -0.11496035412548938, -0.17180710560124782, 0.3627351462427113, -0.14737757412432176, -0.30043408310868674, 0.046333353862994246, -0.11758881445146269, -0.29838300548079943, 0.24834484358628592, 0.008938895357358787, 0.14107261799896756, 0.03458455853008976, 0.11402656106899182, -0.22023797697491115, 0.015941983709732693, 0.19768341542739007, -0.08831451097244604, 0.21150843323104912, -0.0805518181166715, 0.11506973424305518, 0.2887293764183091, -0.03915433197592696, -0.027268333153592214, -0.351956383842561, -0.4169686184161239, -0.11558163815384938, 0.13036960653132862, -0.15137421267314088, -0.20930027537461784, 0.3348477802549799, -0.04207293978995747, 0.19923008854190508, 0.28348750460685956, 0.29254057423936, 0.0022417373127407497, 0.13708000630140305, 0.08529488281864259, 0.06450049558447467, 0.22604825492534372, -0.06765820052371257, -0.07329400097175191, -0.02182685977054967, 0.3310044538488405] |
707.4135 | A landing theorem for dynamic rays of geometrically finite entire
functions | A transcendental entire function f is called geometrically finite if the
intersection of the set of singular values with the Fatou set is compact and
the intersection of the postsingular set with the Julia set is finite. (In
particular, this includes all entire functions with finite postsingular set.)
If f is geometrically finite, then the Fatou set of f is either empty or
consists of the basins of attraction of finitely many attracting or parabolic
cycles.
Let z_0 be a repelling or parabolic periodic point of such a map f. We show
that, if f has finite order, then there exists an injective curve consisting of
escaping points of f that connects z_0 to infinity. (This curve is called a
dynamic ray.) In fact, the assumption of finite order can be weakened
considerably; for example, it is sufficient to assume that f can be written as
a finite composition of finite-order functions.
| math.DS | a transcendental entire function f is called geometrically finite if the intersection of the set of singular values with the fatou set is compact and the intersection of the postsingular set with the julia set is finite in particular this includes all entire functions with finite postsingular set if f is geometrically finite then the fatou set of f is either empty or consists of the basins of attraction of finitely many attracting or parabolic cycles let z_0 be a repelling or parabolic periodic point of such a map f we show that if f has finite order then there exists an injective curve consisting of escaping points of f that connects z_0 to infinity this curve is called a dynamic ray in fact the assumption of finite order can be weakened considerably for example it is sufficient to assume that f can be written as a finite composition of finiteorder functions | [['a', 'transcendental', 'entire', 'function', 'f', 'is', 'called', 'geometrically', 'finite', 'if', 'the', 'intersection', 'of', 'the', 'set', 'of', 'singular', 'values', 'with', 'the', 'fatou', 'set', 'is', 'compact', 'and', 'the', 'intersection', 'of', 'the', 'postsingular', 'set', 'with', 'the', 'julia', 'set', 'is', 'finite', 'in', 'particular', 'this', 'includes', 'all', 'entire', 'functions', 'with', 'finite', 'postsingular', 'set', 'if', 'f', 'is', 'geometrically', 'finite', 'then', 'the', 'fatou', 'set', 'of', 'f', 'is', 'either', 'empty', 'or', 'consists', 'of', 'the', 'basins', 'of', 'attraction', 'of', 'finitely', 'many', 'attracting', 'or', 'parabolic', 'cycles', 'let', 'z_0', 'be', 'a', 'repelling', 'or', 'parabolic', 'periodic', 'point', 'of', 'such', 'a', 'map', 'f', 'we', 'show', 'that', 'if', 'f', 'has', 'finite', 'order', 'then', 'there', 'exists', 'an', 'injective', 'curve', 'consisting', 'of', 'escaping', 'points', 'of', 'f', 'that', 'connects', 'z_0', 'to', 'infinity', 'this', 'curve', 'is', 'called', 'a', 'dynamic', 'ray', 'in', 'fact', 'the', 'assumption', 'of', 'finite', 'order', 'can', 'be', 'weakened', 'considerably', 'for', 'example', 'it', 'is', 'sufficient', 'to', 'assume', 'that', 'f', 'can', 'be', 'written', 'as', 'a', 'finite', 'composition', 'of', 'finiteorder', 'functions']] | [-0.19966652528627923, 0.1344389793392015, -0.11048507043099227, 0.011199902682595788, -0.07366435995362208, -0.11885226689168792, 0.02357555501236531, 0.32659602125395876, -0.3405969331139012, -0.13430698847744343, 0.09863080208857641, -0.3171966452925852, -0.09335835966569568, 0.20855572172838852, -0.07402452941230302, 0.01643514640157886, 0.04883918873843198, 0.10947439957434606, -0.046414182046550866, -0.2573088127882281, 0.3717349479465108, -0.12735179756878337, 0.16444599341699168, 0.0616533740938298, 0.13700237286493097, -0.018100920500920006, 0.038952444047409746, 0.04905079535934707, -0.11895575853424434, 0.0615446628760669, 0.2822907943474619, 0.15781425087908774, 0.31501499467872474, -0.35333164378167375, -0.1832826423005348, 0.27856840811038736, 0.13636831545246472, -0.0410027657788688, -0.0001684759688367577, -0.19178514471461408, 0.1773078657723473, -0.14209291724929293, -0.2089892228464841, -0.0425585298431351, 0.10982604592266541, 0.08510634116215729, -0.30052569637222115, -0.035003703244192844, 0.12433079185307418, 0.11701145257163596, -0.031001307067957607, -0.059596415869524015, -0.12108215560989552, 0.08659393635982844, -0.0017554632550424063, 0.10921050868254449, 0.08659098586251371, -0.02755284607165346, -0.018373316904456403, 0.38176141036705014, -0.09795230830480393, -0.2590790145515807, 0.19254983553822203, -0.20091450975987277, -0.07862763754459784, 0.1850743086481663, 0.09257481821910724, 0.1330874657632146, -0.10991955278318767, 0.2472816512266658, -0.13752866789429008, 0.14104271075465427, 0.0890743411023562, -0.04725563861460327, 0.1868217415712455, 0.09985558894358722, 0.1563616596820219, 0.16676907386940193, 2.2374635782877083e-05, -0.009604434375528638, -0.3916691727936268, -0.10614040479413234, -0.19942167581527764, 0.12408698197625774, -0.08482843097044679, -0.2943369341940668, 0.392297745976401, 0.04135046007975593, 0.20746094981012375, 0.052797556096074436, 0.23199242536563697, 0.14377231381647443, 0.0350908862524911, 0.10383353754992927, 0.10846840943007632, 0.09579257928692785, -0.07934625512969337, -0.127855122717416, 0.06151548147777488, 0.14951585166732242] |
707.4136 | Gauge Theory in Two Dimensions: Topological, Geometric and Probabilistic
Aspects | We present a description of two dimensional Yang-Mills gauge theory on the
plane and on compact surfaces, examining the topological, geometric and
probabilistic aspects.
| hep-th math-ph math.MP | we present a description of two dimensional yangmills gauge theory on the plane and on compact surfaces examining the topological geometric and probabilistic aspects | [['we', 'present', 'a', 'description', 'of', 'two', 'dimensional', 'yangmills', 'gauge', 'theory', 'on', 'the', 'plane', 'and', 'on', 'compact', 'surfaces', 'examining', 'the', 'topological', 'geometric', 'and', 'probabilistic', 'aspects']] | [-0.16566630970919505, 0.13700488120472679, -0.1221814441960305, 0.09741469860697786, -0.08829172188416123, -0.06264565976258989, 0.022668484331613097, 0.3612333884617935, -0.14959589067924148, -0.22406276959615448, 0.08549036844245468, -0.2419604476696501, -0.23482473815480867, 0.18555607475961247, -0.07999340130481869, 0.02402882530198743, -0.003500736473749081, 0.025732573897888262, -0.15397675218991935, -0.24386942374985665, 0.40804870180242386, -0.0838303108078738, 0.28314098611008376, 0.07204740106923661, 0.15798379061743617, 0.09174444250917684, -0.0535058710568895, 0.0873760738177225, -0.21719794483700147, 0.2218912405272325, 0.19763815853123864, 0.04117223833842824, 0.08929994826515515, -0.46668388539304334, -0.2748987053055316, 0.007065943946751456, 0.03382798292053243, 0.1089835383463651, -0.043088427560481556, -0.31923393982773024, 0.03432274082054695, -0.08492901703963678, -0.12107741132786032, -0.12420471974958976, -0.02441626732858519, -0.09609337360598147, -0.1247859153081663, -0.002978764163951079, 0.06971842764566342, 0.1586914131961142, -0.0377356904403617, -0.05992016817132632, -0.07049145988033463, 0.051961466805854194, 0.022217428234095376, 0.03802725664960841, 0.08552832926701133, -0.16781909690477428, -0.16976690290418142, 0.3982163399147491, -0.03015929014266779, -0.2563669620237003, 0.28833502480604994, -0.12154560815542936, -0.20628131922179213, 0.04067447777682295, 0.21978934963893457, 0.1726168254390359, -0.08193804024873923, 0.20969198804717357, -0.055031226812085755, 0.13704438136968142, 0.06829216203186661, 0.05980199889745563, 0.26912382695203024, 0.16080147043491402, 0.0426384488431116, 0.1391298367525451, -0.03622600713667149, -0.17834617903766534, -0.4210170116275549, -0.2010456956534957, -0.12818666522798594, 0.11326244613155723, -0.13136618029360156, -0.2161777513101697, 0.45521317259408534, 0.06076423570387609, 0.16050193711028746, 0.03558585132122971, 0.25848947123934823, 0.09356056843535043, -0.05188530326510469, 0.016968712443485856, 0.15886232228998173, 0.2099926166702062, -0.0022788402857258916, -0.18729157947624722, -0.1338673002513436, 0.2497434268395106] |
707.4137 | Measurement of the slope parameter \alpha for the \eta\to 3\pi^0 decay
at KLOE | We report a preliminary measurement of the slope parameter $\alpha$ for the
$\eta\to 3\piz$ decay carried out with KLOE at DA$\Phi$NE; where $\alpha$ is
the parameter describing the energy dependence of the square of the matrix
element for this decay. By fitting the event density in the Dalitz plot with a
collected statistic of 420 pb$^{-1}$ we determine $\alpha = -0.027 \pm 0.004
(stat) ^{+0.004}_{-0.006} (syst)$. This result is consistent with current
chiral perturbation theory calculations within the unitary approach.
| hep-ex | we report a preliminary measurement of the slope parameter alpha for the etato 3piz decay carried out with kloe at daphine where alpha is the parameter describing the energy dependence of the square of the matrix element for this decay by fitting the event density in the dalitz plot with a collected statistic of 420 pb1 we determine alpha 0027 pm 0004 stat 0004_0006 syst this result is consistent with current chiral perturbation theory calculations within the unitary approach | [['we', 'report', 'a', 'preliminary', 'measurement', 'of', 'the', 'slope', 'parameter', 'alpha', 'for', 'the', 'etato', '3piz', 'decay', 'carried', 'out', 'with', 'kloe', 'at', 'daphine', 'where', 'alpha', 'is', 'the', 'parameter', 'describing', 'the', 'energy', 'dependence', 'of', 'the', 'square', 'of', 'the', 'matrix', 'element', 'for', 'this', 'decay', 'by', 'fitting', 'the', 'event', 'density', 'in', 'the', 'dalitz', 'plot', 'with', 'a', 'collected', 'statistic', 'of', '420', 'pb1', 'we', 'determine', 'alpha', '0027', 'pm', '0004', 'stat', '0004_0006', 'syst', 'this', 'result', 'is', 'consistent', 'with', 'current', 'chiral', 'perturbation', 'theory', 'calculations', 'within', 'the', 'unitary', 'approach']] | [-0.08241215068242186, 0.16806961764133982, -0.12771408173993423, 0.02083625981293909, 0.0006541498549669593, -0.1138212608850815, 0.0625148939782173, 0.29351555171434757, -0.17206494135679315, -0.34065816178086344, 0.014397669969090298, -0.3748834277079864, 0.009727804062815456, 0.14424917630113468, 0.05914645697377235, 0.13099461444048816, 0.06416034929502706, 0.006973875245055208, -0.10082244299134457, -0.12686593712053515, 0.21956633475863122, 0.10058866653518823, 0.24608115283409496, 0.04220944268374958, 0.04413198455094735, 0.04287738555909267, -0.10094670001296448, -0.07888929686182505, -0.2635353005600053, 0.036005714500032655, 0.21184144781104156, 0.0521768120929369, 0.18028599052847205, -0.28154396314125557, -0.07778347263040093, 0.12248114717809798, 0.14122637654594206, -0.0019327874522952532, -0.006131605426599453, -0.34087402397742517, 0.13177141536619852, -0.19037876389436909, -0.15169234308580468, 0.010110367775906796, 0.06283523408429963, -0.06883373205828203, -0.3623993614470804, 0.20165721150477986, -0.10009365328043313, 0.10455338192478883, -0.032309698600128486, -0.2176811324021259, 0.019344051749530165, -0.006392063600216787, 0.08810426611090441, 0.10856271830883313, 0.1618220241885487, -0.048995332919399844, -0.07189256223916475, 0.3236645742670282, -0.09174113340869353, -0.13926739699219343, -0.010990313087989177, -0.21282811715666736, -0.15371679716634673, 0.158151507746525, 0.13283488863184081, 0.08707697469402444, -0.16777836343926655, 0.12602255817551117, -0.02110332023963187, 0.27574420495218804, 0.03162791285143754, -0.024036230319844826, 0.15794348732761845, 0.19584064938841605, -0.013667692974596829, 0.04428876286928917, -0.16708328414635806, -0.07239394114872852, -0.4238978579471057, -0.10453931144257257, -0.1203030494174787, 0.10203957309123951, -0.11107460508885031, -0.10468414388052732, 0.3768278497283335, 0.09556047728454525, 0.26454624717498754, 0.05154750223706972, 0.2437110696495934, 0.1464734646255852, 0.02021463673150578, 0.03142989070045871, 0.30592321005782913, 0.198399490183945, 0.0897675607740492, -0.2896783280295211, 0.03609555715985306, 0.04833875950002535] |
707.4138 | Alkali Line Profiles in Ultracool White Dwarfs | We present PHOENIX atmosphere models for metal-rich cool white dwarfs using
improved line shapes for the Na I and K I resonance doublets. Profiles for
collisional broadening due to H2 and He based on the adiabatic representation
show strong deviations from Van der Waals interaction at short distances.
Comparison with observed spectra that show extremely broadened Na I lines
indicates that a He-rich atmospheric composition is required to explain the
line strengths and spectral energy distributions. Our current synthetic
spectra, using an expansion in powers of density to the third order optimised
for brown dwarf atmosphere conditions, significantly underestimate the observed
absorption in the far wings, even predicting smaller total line strength than a
Lorentzian profile. This is due to the handling of multiple perturber
interactions becoming inadequate for the extreme densities of the coolest white
dwarfs. The density expansion would have to be extended at least to the 7th
order for an accurate treatment of such conditions and might break down
altogether in the densest objects. The results of a direct calculation of the
unified profile should therefore be used for model atmospheres of cool
metal-rich white dwarfs. Qualitative comparison of the full adiabatic profile
to the spectrum of WD2356-209 indicates good agreement with the observed line
shape. Observations of the coolest white dwarfs may therefore serve as a
laboratory for testing the physics of the deeper atmospheres and interiors of
brown dwarfs and giant planets.
| astro-ph | we present phoenix atmosphere models for metalrich cool white dwarfs using improved line shapes for the na i and k i resonance doublets profiles for collisional broadening due to h2 and he based on the adiabatic representation show strong deviations from van der waals interaction at short distances comparison with observed spectra that show extremely broadened na i lines indicates that a herich atmospheric composition is required to explain the line strengths and spectral energy distributions our current synthetic spectra using an expansion in powers of density to the third order optimised for brown dwarf atmosphere conditions significantly underestimate the observed absorption in the far wings even predicting smaller total line strength than a lorentzian profile this is due to the handling of multiple perturber interactions becoming inadequate for the extreme densities of the coolest white dwarfs the density expansion would have to be extended at least to the 7th order for an accurate treatment of such conditions and might break down altogether in the densest objects the results of a direct calculation of the unified profile should therefore be used for model atmospheres of cool metalrich white dwarfs qualitative comparison of the full adiabatic profile to the spectrum of wd2356209 indicates good agreement with the observed line shape observations of the coolest white dwarfs may therefore serve as a laboratory for testing the physics of the deeper atmospheres and interiors of brown dwarfs and giant planets | [['we', 'present', 'phoenix', 'atmosphere', 'models', 'for', 'metalrich', 'cool', 'white', 'dwarfs', 'using', 'improved', 'line', 'shapes', 'for', 'the', 'na', 'i', 'and', 'k', 'i', 'resonance', 'doublets', 'profiles', 'for', 'collisional', 'broadening', 'due', 'to', 'h2', 'and', 'he', 'based', 'on', 'the', 'adiabatic', 'representation', 'show', 'strong', 'deviations', 'from', 'van', 'der', 'waals', 'interaction', 'at', 'short', 'distances', 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707.4139 | Heavy-quark production in gluon fusion at two loops in QCD | We present the two-loop virtual QCD corrections to the production of heavy
quarks in gluon fusion. The results are exact in the limit when all kinematical
invariants are large compared to the mass of the heavy quark up to terms
suppressed by powers of the heavy-quark mass. Our derivation uses a simple
relation between massless and massive QCD scattering amplitudes as well as a
direct calculation of the massive amplitude at two loops. The results presented
here together with those obtained previously for quark-quark scattering form
important parts of the next-to-next-to-leading order QCD corrections to
heavy-quark production in hadron-hadron collisions.
| hep-ph | we present the twoloop virtual qcd corrections to the production of heavy quarks in gluon fusion the results are exact in the limit when all kinematical invariants are large compared to the mass of the heavy quark up to terms suppressed by powers of the heavyquark mass our derivation uses a simple relation between massless and massive qcd scattering amplitudes as well as a direct calculation of the massive amplitude at two loops the results presented here together with those obtained previously for quarkquark scattering form important parts of the nexttonexttoleading order qcd corrections to heavyquark production in hadronhadron collisions | [['we', 'present', 'the', 'twoloop', 'virtual', 'qcd', 'corrections', 'to', 'the', 'production', 'of', 'heavy', 'quarks', 'in', 'gluon', 'fusion', 'the', 'results', 'are', 'exact', 'in', 'the', 'limit', 'when', 'all', 'kinematical', 'invariants', 'are', 'large', 'compared', 'to', 'the', 'mass', 'of', 'the', 'heavy', 'quark', 'up', 'to', 'terms', 'suppressed', 'by', 'powers', 'of', 'the', 'heavyquark', 'mass', 'our', 'derivation', 'uses', 'a', 'simple', 'relation', 'between', 'massless', 'and', 'massive', 'qcd', 'scattering', 'amplitudes', 'as', 'well', 'as', 'a', 'direct', 'calculation', 'of', 'the', 'massive', 'amplitude', 'at', 'two', 'loops', 'the', 'results', 'presented', 'here', 'together', 'with', 'those', 'obtained', 'previously', 'for', 'quarkquark', 'scattering', 'form', 'important', 'parts', 'of', 'the', 'nexttonexttoleading', 'order', 'qcd', 'corrections', 'to', 'heavyquark', 'production', 'in', 'hadronhadron', 'collisions']] | [-0.0801725723547861, 0.2454169420339167, -0.08518060903530568, 0.13581560735125095, -0.030639506014995276, -0.021023880755528808, 0.01786775455926545, 0.31228120060637593, -0.14849208665080368, -0.23917837435379624, -0.01887810245505534, -0.340978847136721, -0.01304055861197412, 0.14089555874466897, 0.08603630329016596, 0.1126228360121604, 0.08329186280956492, 0.05082214845810085, -0.07375584844034165, -0.245660475413315, 0.37034316223114727, 0.02237499226350337, 0.165313603640534, 0.20143686823546886, 0.04137621120084077, 0.057163345348089936, -0.0867252867424395, -0.07135690603405237, -0.07657274954020978, 0.08004180506133707, 0.23790734299167526, -0.038156767277978364, 0.09338982466608287, -0.37868017970584333, -0.11847359873121605, 0.05349297795444727, 0.19987945761997253, 0.16258270705118774, -0.03433595766080543, -0.24775724709965288, 0.10639081310480833, -0.25734601765871046, -0.18164289939682932, -0.115242581628263, -0.026497067841701208, -0.04584620282519609, -0.3384978482685983, 0.08138740006834269, -0.06779622211004607, -0.038152724849060175, 0.0056333719752728936, -0.19093013736419379, -0.06594191828276962, 0.08228019228583434, 0.13538990898989142, 0.07799584623426199, 0.13021806292235852, -0.236068930454785, -0.17912796068936587, 0.4506491565029137, -0.04399798027821816, -0.14631876324303447, 0.17931582498829812, -0.19039797289762647, -0.14647205136716365, 0.161356223737821, 0.21020655043190345, 0.11835170766338705, -0.21528774173770215, 0.10305449092236812, 0.002486756001599133, 0.09980026505421848, 0.1149074904806912, 0.10167956411838532, 0.18560884424485266, 0.160231902084779, -0.10334918489679694, 0.0881368052540347, -0.028181625138968228, -0.11892681574914604, -0.43463670581579206, -0.08588196236989461, -0.08801658438635059, 0.028773658322170378, -0.15718321711596217, -0.13122708942741157, 0.3197266313410364, 0.12326015779282898, 0.24446570351254196, 0.07795251187868417, 0.39937765631824734, 0.16611884577083402, 0.12541007173247634, 0.09178836691658944, 0.29413277210202066, 0.2241328247846104, 0.12500848616007715, -0.29087741693481806, -0.054468420431949195, 0.15169430918060242] |
707.414 | Non-annulation effective et positivit\'e locale des fibr\'es en droites
amples adjoints | We prove that Seshadri constants of some ample divisors are bigger than 1 on
smooth threefolds whose anticanonical bundle is nef or on Fano varieties of
small coindice. The main tools are (some known cases of) the Kawamata's
effective non-vanishing conjecture and the adjunction theory. We prove the
non-vanishing conjecture in dimension 3 in the case of line bundles of "high"
volume using Kawamata's subadjunction formula.
| math.AG | we prove that seshadri constants of some ample divisors are bigger than 1 on smooth threefolds whose anticanonical bundle is nef or on fano varieties of small coindice the main tools are some known cases of the kawamatas effective nonvanishing conjecture and the adjunction theory we prove the nonvanishing conjecture in dimension 3 in the case of line bundles of high volume using kawamatas subadjunction formula | [['we', 'prove', 'that', 'seshadri', 'constants', 'of', 'some', 'ample', 'divisors', 'are', 'bigger', 'than', '1', 'on', 'smooth', 'threefolds', 'whose', 'anticanonical', 'bundle', 'is', 'nef', 'or', 'on', 'fano', 'varieties', 'of', 'small', 'coindice', 'the', 'main', 'tools', 'are', 'some', 'known', 'cases', 'of', 'the', 'kawamatas', 'effective', 'nonvanishing', 'conjecture', 'and', 'the', 'adjunction', 'theory', 'we', 'prove', 'the', 'nonvanishing', 'conjecture', 'in', 'dimension', '3', 'in', 'the', 'case', 'of', 'line', 'bundles', 'of', 'high', 'volume', 'using', 'kawamatas', 'subadjunction', 'formula']] | [-0.24779524167713066, 0.02752098487958742, -0.039320587280851145, 0.1544266307959333, -0.06973384477627965, -0.2559432403972516, -0.011188740202655586, 0.3139938459086877, -0.2276076663643695, -0.17337231936936195, 0.10790828550592638, -0.2718404108730073, -0.16705494004015167, 0.23565640207021854, -0.21096691050781655, -0.0056736252270638944, -0.002492241751259336, 0.055678680453162925, -0.07368747514959138, -0.37625288696995435, 0.49664383537064377, -0.07220698137266132, 0.23301919006670896, 0.2221206903672562, 0.09569456697656559, -0.027715452380764942, 0.02857723254710436, -0.04294054131541298, -0.18564332340756665, 0.19661392601063618, 0.2862386701449465, 0.08374101165323876, 0.15584863008788, -0.3603768922388554, -0.11815416137329661, 0.21144401106732683, 0.11229600115822484, 0.055390574238621273, 0.03067049330745179, -0.20200804518893933, 0.12453325420904618, -0.0942863185549728, -0.27147160642422163, -0.10126273066091995, 0.05497673552913161, 0.03306817108621964, -0.1847783909465831, -0.022404942291233545, 0.09554692157185994, 0.20591504611074923, -0.057886960013554645, -0.17260588529304816, -0.08556287388962049, -0.010462482773269026, 0.07774952355987177, 0.0258277784459866, 0.10020320617522184, -0.1065138498464456, -0.07001285333401308, 0.32501490636943625, -0.08657957074487618, -0.19569227467111958, 0.07233820053247306, -0.17876850650645792, -0.1614857685823853, 0.18565697212918447, 0.06534916390306675, 0.25307463576587347, 0.10665474670151105, 0.18385033385666946, -0.14974736337764905, 0.04927585774029677, 0.13810478182724462, -0.029178306961861942, 0.09085822936434013, 0.061180015825308284, 0.09281896325365568, 0.06482713357814086, -0.008308825104569014, -0.053211241202930415, -0.4161550975762881, -0.22490001389613518, -0.1244519125097073, 0.2536585972429468, -0.17864465295816234, -0.14122353519599598, 0.30246399469816915, 0.023024801365458047, 0.2300544404066526, 0.18373474253771396, 0.26226730667627773, 0.01924041657207104, 0.030380838077801925, 0.026178549064430765, 0.2011570135677735, 0.25649682498322085, -0.03497228123104343, -0.07641670341746738, -0.011719729951045548, 0.23005266351482043] |
707.4141 | Resolution of symplectic cyclic orbifold singularities | In this paper we present a method to obtain resolutions of symplectic
orbifolds arising from symplectic reduction of a Hamiltonian S^1-manifold at a
regular value. As an application, we show that all isolated cyclic
singularities of a symplectic orbifold admit a resolution and that
pre-quantisations of symplectic orbifolds are symplectically fillable by a
smooth manifold.
| math.SG | in this paper we present a method to obtain resolutions of symplectic orbifolds arising from symplectic reduction of a hamiltonian s1manifold at a regular value as an application we show that all isolated cyclic singularities of a symplectic orbifold admit a resolution and that prequantisations of symplectic orbifolds are symplectically fillable by a smooth manifold | [['in', 'this', 'paper', 'we', 'present', 'a', 'method', 'to', 'obtain', 'resolutions', 'of', 'symplectic', 'orbifolds', 'arising', 'from', 'symplectic', 'reduction', 'of', 'a', 'hamiltonian', 's1manifold', 'at', 'a', 'regular', 'value', 'as', 'an', 'application', 'we', 'show', 'that', 'all', 'isolated', 'cyclic', 'singularities', 'of', 'a', 'symplectic', 'orbifold', 'admit', 'a', 'resolution', 'and', 'that', 'prequantisations', 'of', 'symplectic', 'orbifolds', 'are', 'symplectically', 'fillable', 'by', 'a', 'smooth', 'manifold']] | [-0.2124792215483332, 0.012941509754994142, -0.13608589708908564, 0.08550250476346938, -0.084319508039496, -0.15926544266511444, -0.05055118476566686, 0.3743125772862523, -0.2533127083270638, -0.22685721590770064, 0.10094328872057506, -0.2235469558034782, -0.2024516933080223, 0.17677755545203885, -0.21011355255420008, -0.046735270966396285, 0.13154560687986236, 0.02633278058945305, -0.19288107634659996, -0.24851182234232072, 0.47564020952968683, -0.03854228081871514, 0.16462882299459092, 0.08094818403737412, 0.18906199242229815, -0.07224926982005989, 0.04531146879135459, 0.04850797517294133, -0.14513828342535784, 0.08873980882129183, 0.32717575043163916, -0.002642221645348602, 0.11377510019317721, -0.4071724222352107, -0.19364608356004787, 0.16415847417105128, 0.15968007625391087, 0.08519400928721384, -0.04009609831997228, -0.2554955891574974, 0.11429377347748312, -0.16135645533709234, -0.20922159536362248, -0.13552889245113842, -0.030159083988379548, 0.0004374951262164999, -0.1691090117070686, -0.013086322151745359, 0.1438824205176422, 0.13282065755791134, -0.023583518763728165, -0.047652476398205315, -0.06081718565999634, 0.05614755078460331, -0.03356863734208875, 0.067387280140624, 0.09220633188400555, -0.06609209711853138, -0.14308246739070724, 0.37572255909994795, -0.07716745550795975, -0.3048612794459418, 0.10255968738002358, -0.08893252486207832, -0.22742234803822445, 0.21525652451371705, 0.08769479111112931, 0.19074542578999643, -0.032144252447997804, 0.18574180348702982, -0.09419467791707979, 0.052140964540066545, 0.1367083591564248, -0.041260078773592355, 0.14227335345155248, 0.11960983217728359, 0.17007993015081244, 0.0848636506728966, -0.04362206108419708, -0.06141643530982374, -0.354053950652963, -0.19472010619938374, -0.11550355602823267, 0.27990034884876674, -0.10219883688491622, -0.21065288306110436, 0.39704859136017384, -0.001390828544067012, 0.24904860704447385, 0.15529852906345493, 0.254943881528797, 0.0025975690546652507, 0.036561256654008674, 0.058154244217331764, 0.09903168505816548, 0.16308066702913493, -0.03551747556775808, -0.14959593588072392, -0.1887997000961116, 0.18937973348699785] |
707.4142 | On possible implications of gluon number fluctuations in DIS data | We study the effect of gluon number fluctuations (Pomeron loops) on deep
inelastic scattering (DIS) in the fixed coupling case. We find that the
description of the DIS data is improved once gluon number fluctuations are
included. Also the values of the parameters, like the saturation exponent and
the diffussion coefficient, turn out reasonable and agree with values obtained
from numerical simulations of toy models which take into account fluctuations.
This outcome seems to indicate the evidence of geometric scaling violations,
and a possible implication of gluon number fluctuations, in the DIS data.
However, we cannot exclude the possibility that the scaling violations may also
come from the diffusion part of the solution to the BK-equation, instead of
gluon number fluctuations.
| hep-ph | we study the effect of gluon number fluctuations pomeron loops on deep inelastic scattering dis in the fixed coupling case we find that the description of the dis data is improved once gluon number fluctuations are included also the values of the parameters like the saturation exponent and the diffussion coefficient turn out reasonable and agree with values obtained from numerical simulations of toy models which take into account fluctuations this outcome seems to indicate the evidence of geometric scaling violations and a possible implication of gluon number fluctuations in the dis data however we cannot exclude the possibility that the scaling violations may also come from the diffusion part of the solution to the bkequation instead of gluon number fluctuations | [['we', 'study', 'the', 'effect', 'of', 'gluon', 'number', 'fluctuations', 'pomeron', 'loops', 'on', 'deep', 'inelastic', 'scattering', 'dis', 'in', 'the', 'fixed', 'coupling', 'case', 'we', 'find', 'that', 'the', 'description', 'of', 'the', 'dis', 'data', 'is', 'improved', 'once', 'gluon', 'number', 'fluctuations', 'are', 'included', 'also', 'the', 'values', 'of', 'the', 'parameters', 'like', 'the', 'saturation', 'exponent', 'and', 'the', 'diffussion', 'coefficient', 'turn', 'out', 'reasonable', 'and', 'agree', 'with', 'values', 'obtained', 'from', 'numerical', 'simulations', 'of', 'toy', 'models', 'which', 'take', 'into', 'account', 'fluctuations', 'this', 'outcome', 'seems', 'to', 'indicate', 'the', 'evidence', 'of', 'geometric', 'scaling', 'violations', 'and', 'a', 'possible', 'implication', 'of', 'gluon', 'number', 'fluctuations', 'in', 'the', 'dis', 'data', 'however', 'we', 'can', 'not', 'exclude', 'the', 'possibility', 'that', 'the', 'scaling', 'violations', 'may', 'also', 'come', 'from', 'the', 'diffusion', 'part', 'of', 'the', 'solution', 'to', 'the', 'bkequation', 'instead', 'of', 'gluon', 'number', 'fluctuations']] | [-0.11501915719791138, 0.16866099677810614, -0.15083276344971222, 0.14035085108215836, -0.06871930263168756, -0.05399726680287522, 0.06269980955499509, 0.3033517836323701, -0.23154633979059078, -0.2704195773367547, 0.055656547459950745, -0.3161609020730681, -0.08659579275822467, 0.17229174955340087, 0.030145335215151555, 0.03712328110676266, 0.0635227592785127, 0.014711059206588701, -0.022578570290857327, -0.23981253463343893, 0.34537415739056493, 0.06712600383075332, 0.28438355238369306, 0.12316931055354585, 0.06106030256949242, 0.038163500303048485, -0.05182365753711009, 0.05507231280900353, -0.11349878643029888, 0.026489828159062822, 0.199342303916487, 0.041866471101953226, 0.1773610257443564, -0.4358339130047185, -0.1859850957912724, 0.12008106606927785, 0.1576283054834247, 0.1280146679510978, -0.012667211169985024, -0.2182414782991679, 0.02719500312708657, -0.18522493572797905, -0.15171779275771755, -0.12464354124520559, -0.014741747732435868, -0.0014412291184421782, -0.32203444074223603, 0.09595570390349377, 0.020784474674550708, -0.016530621158005285, -0.04020889013551545, -0.15698515599947577, -0.04981209375810894, 0.09731517422825006, 0.13001801871910137, 0.025900296761061658, 0.14941716286322979, -0.21390443011417923, -0.08451439601500049, 0.33594553662109966, -0.020640501974743198, -0.16377228810182534, 0.14053725366372893, -0.2246455561970014, -0.15848380083618455, 0.14588447332320628, 0.16657364337651198, 0.05427881482072667, -0.1279574504183713, 0.07568231344171068, -0.04694675996299248, 0.18372770692876056, 0.0416776185204883, 0.057618757699277594, 0.2009049615811187, 0.1422634598652809, -0.04018019226933868, 0.10861237487786503, -0.10695071598661156, -0.12437843490239957, -0.3788403811949221, -0.05976532304213067, -0.13016478368273574, 0.07135865284519151, -0.14508777041306184, -0.11839179464034767, 0.3250474373171152, 0.19531486424413502, 0.2530369590736987, 0.059589452524900374, 0.2715234589947711, 0.12450558619096505, 0.09426196880854112, 0.06254988700951919, 0.28210186772048473, 0.13187810258922064, 0.10920131641001371, -0.26659088972802003, 0.08190579089713244, 0.03531817569251149] |
707.4143 | Hopf algebra of non-commutative field theory | We contruct here the Hopf algebra structure underlying the process of
renormalization of non-commutative quantum field theory.
| math-ph hep-th math.MP math.QA | we contruct here the hopf algebra structure underlying the process of renormalization of noncommutative quantum field theory | [['we', 'contruct', 'here', 'the', 'hopf', 'algebra', 'structure', 'underlying', 'the', 'process', 'of', 'renormalization', 'of', 'noncommutative', 'quantum', 'field', 'theory']] | [-0.19609186658635736, 0.15722814054392717, -0.1708626339540762, 0.08290388091753652, -0.15643664865809329, -0.09673881541718454, -0.014937406234607539, 0.3327574991785428, -0.45667291213484373, -0.16370849968755946, 0.08900070132906823, -0.14957773071878097, -0.29265491445274916, 0.09520001178059508, -0.04423140786478624, 0.014473227017066059, -0.0022988937356892753, 0.10721043067272096, -0.13164073447970784, -0.2102290629546213, 0.47664831055547385, 0.0843458981184727, 0.25194932394387093, 0.01398726092541919, 0.11954739799394327, 0.06692364236668628, -0.02123246035155128, -0.00027610399924656926, -0.24098077728686965, 0.0812047346330741, 0.2515456475974882, 0.036991308717166674, 0.209231286049437, -0.429580950342557, -0.1406279372270493, 0.004593643140705193, 0.13553532470455942, 0.12509368261431947, -0.054661443237872684, -0.30339797312284217, 0.03303948625483934, -0.2617934920332011, -0.12414813019773539, -0.1011215498780503, -0.019429158659049255, -0.1391916841213756, -0.17684902041561573, 0.05014538480078473, 0.06448154381531127, 0.1602334664477145, -0.04379892654662185, 0.04035233771976303, -0.060619113418985814, 0.08813590118113686, -0.07019399528508075, 0.015287838164059556, 0.2286675301490023, -0.14312667399644852, -0.24080912725013845, 0.2991615987437613, 0.009654083563124432, -0.1935080846442896, 0.05592448062345605, -0.21319682446911054, -0.2199736463234705, 0.05708940283340566, 0.07676043865435264, 0.12778750215383136, -0.028950226825305864, 0.336307031705099, -0.1030593797126237, 0.055559211574933105, 0.002043971572728718, 0.056830883464392495, 0.09409916828222134, 0.10335950772551929, -0.028180467293542975, 0.06461306853110299, 0.005801914506317938, -0.2739054477390121, -0.4221245098639937, -0.19711186972391956, -0.11594006868408006, 0.24186528752119663, -0.17381441552082405, -0.25982099026441574, 0.44773371232783093, 0.19802662648041458, 0.10768105445758384, -0.038554384482695776, 0.18547172318486607, 0.15380328849834554, 0.0768869881901671, -0.034497249871492386, 0.14963524470872738, 0.38549769078107443, 0.029175620635642725, -0.20410442516645966, -0.12815433899488518, 0.24134844360763535] |
707.4144 | The grid-dose-spreading algorithm for dose distribution calculation in
heavy charged particle radiotherapy | A new variant of the pencil-beam (PB) algorithm for dose distribution
calculation for radiotherapy with protons and heavier ions, the grid-dose
spreading (GDS) algorithm, is proposed. The GDS algorithm is intrinsically
faster than conventional PB algorithms due to approximations in convolution
integral, where physical calculations are decoupled from simple grid-to-grid
energy transfer. It was effortlessly implemented to a carbon-ion radiotherapy
treatment planning system to enable realistic beam blurring in the field, which
was absent with the broad-beam (BB) algorithm. For a typical prostate
treatment, the slowing factor of the GDS algorithm relative to the BB algorithm
was 1.4, which is a great improvement over the conventional PB algorithms with
a typical slowing factor of several tens. The GDS algorithm is mathematically
equivalent to the PB algorithm for horizontal and vertical coplanar beams
commonly used in carbon-ion radiotherapy while dose deformation within the size
of the pristine spread occurs for angled beams, which was within 3 mm for a
single proton pencil beam of $30^\circ$ incidence, and needs to be assessed
against the clinical requirements and tolerances in practical situations.
| physics.med-ph | a new variant of the pencilbeam pb algorithm for dose distribution calculation for radiotherapy with protons and heavier ions the griddose spreading gds algorithm is proposed the gds algorithm is intrinsically faster than conventional pb algorithms due to approximations in convolution integral where physical calculations are decoupled from simple gridtogrid energy transfer it was effortlessly implemented to a carbonion radiotherapy treatment planning system to enable realistic beam blurring in the field which was absent with the broadbeam bb algorithm for a typical prostate treatment the slowing factor of the gds algorithm relative to the bb algorithm was 14 which is a great improvement over the conventional pb algorithms with a typical slowing factor of several tens the gds algorithm is mathematically equivalent to the pb algorithm for horizontal and vertical coplanar beams commonly used in carbonion radiotherapy while dose deformation within the size of the pristine spread occurs for angled beams which was within 3 mm for a single proton pencil beam of 30circ incidence and needs to be assessed against the clinical requirements and tolerances in practical situations | [['a', 'new', 'variant', 'of', 'the', 'pencilbeam', 'pb', 'algorithm', 'for', 'dose', 'distribution', 'calculation', 'for', 'radiotherapy', 'with', 'protons', 'and', 'heavier', 'ions', 'the', 'griddose', 'spreading', 'gds', 'algorithm', 'is', 'proposed', 'the', 'gds', 'algorithm', 'is', 'intrinsically', 'faster', 'than', 'conventional', 'pb', 'algorithms', 'due', 'to', 'approximations', 'in', 'convolution', 'integral', 'where', 'physical', 'calculations', 'are', 'decoupled', 'from', 'simple', 'gridtogrid', 'energy', 'transfer', 'it', 'was', 'effortlessly', 'implemented', 'to', 'a', 'carbonion', 'radiotherapy', 'treatment', 'planning', 'system', 'to', 'enable', 'realistic', 'beam', 'blurring', 'in', 'the', 'field', 'which', 'was', 'absent', 'with', 'the', 'broadbeam', 'bb', 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707.4145 | Flux tubes as the origin of Net Circular Polarization in Sunspot
Penumbrae | We employ a 3-dimensional magnetohydrostatic model of a horizontal flux tube,
embedded in a magnetic surrounding atmosphere, to successfully reproduce the
azimuthal and center-to-limb variations of the Net Circular Polarization
observed in sunspot penumbrae. This success is partly due to the realistic
modeling of the interaction between the flux tube and the surrounding magnetic
field.
| astro-ph | we employ a 3dimensional magnetohydrostatic model of a horizontal flux tube embedded in a magnetic surrounding atmosphere to successfully reproduce the azimuthal and centertolimb variations of the net circular polarization observed in sunspot penumbrae this success is partly due to the realistic modeling of the interaction between the flux tube and the surrounding magnetic field | [['we', 'employ', 'a', '3dimensional', 'magnetohydrostatic', 'model', 'of', 'a', 'horizontal', 'flux', 'tube', 'embedded', 'in', 'a', 'magnetic', 'surrounding', 'atmosphere', 'to', 'successfully', 'reproduce', 'the', 'azimuthal', 'and', 'centertolimb', 'variations', 'of', 'the', 'net', 'circular', 'polarization', 'observed', 'in', 'sunspot', 'penumbrae', 'this', 'success', 'is', 'partly', 'due', 'to', 'the', 'realistic', 'modeling', 'of', 'the', 'interaction', 'between', 'the', 'flux', 'tube', 'and', 'the', 'surrounding', 'magnetic', 'field']] | [-0.12530996049330992, 0.14844751068475573, -0.0005656526847319169, 0.11112264940007166, -0.040977461297403685, -0.002571062108671123, -0.04080608890137889, 0.4388787719336423, -0.21112815688618206, -0.3949349849738858, 0.03908048797483471, -0.20393289801749317, -0.0801959244445739, 0.13229033866135234, -0.06582568563859571, -0.01676493846515024, 0.05022034488872371, -0.015701813894239337, -0.018923280913044106, -0.11795380152338608, 0.2543984628197822, 0.07138377793810584, 0.2750415864485231, 0.06971642149146647, 0.07141794904389165, -0.07247900646179914, -0.012937302616509523, 0.09750212204049934, -0.08348730309781703, 0.09841141017492522, 0.11759727158774198, 0.012362512776797467, 0.15694608492353423, -0.5308998132632538, -0.256034229086204, 0.06573552699251609, 0.13506541865115815, 0.06962282864207571, -0.015882270376790655, -0.2418696572326801, 0.002782516511665149, -0.11407127387144349, -0.17528224054046654, 0.0359327841211449, 0.05876474190207029, 0.014646667496047237, -0.2524261014620689, 0.07739942498843778, 0.049663913317702035, 0.1359957112676718, -0.10837138165635142, -0.025707508335736665, -0.10750139799307692, 0.12856371169909836, 0.10643822226715698, 0.11706616216423836, 0.19319991331378167, -0.1454368955540386, -0.03175023865293373, 0.34766218933192167, -0.09045618921518325, -0.13762499040670015, 0.12029509496959773, -0.24097163741984828, -0.08244282449172302, 0.22232908708128063, 0.212111865661361, 0.07246247625655748, -0.10682559210637754, 0.016618383893827825, -0.09817822521383113, 0.13919923471456225, 0.03882307977500287, -0.07852822310206566, 0.34108877554535866, 0.14869476857764477, -0.0016859874975952236, 0.1654134264215827, -0.2658933740786531, -0.08635984872129153, -0.2685199023647742, -0.11335005821152166, -0.09469481110572815, 0.0332016848874363, -0.06626354318736545, -0.24379417723552746, 0.4565483509139581, 0.15759347763589837, 0.19864606938578866, -0.04271699324334887, 0.354310944405469, 0.06286285628818652, 0.0976197291504253, 0.12175037887116724, 0.31475430341352795, 0.3115459592504935, 0.20558146681975234, -0.2867502262053842, 0.04429170395332304, 0.010616165094754913] |
707.4146 | Forecasting the Evolution of Dynamical Systems from Noisy Observations | We consider the problem of designing almost optimal predictors for dynamical
systems from a finite sequence of noisy observations and incomplete knowledge
of the dynamics and the noise. We first discuss the properties of the optimal
(Bayes) predictor and present the limitations of memory-free forecasting
methods, and of any finite memory methods in general. We then show that a
nonparametric support vector machine approach to forecasting can consistently
learn the optimal predictor for all pairs of dynamical systems and bounded
observational noise processes that possess summable correlation sequences.
Numerical experiments show that this approach adapts the memory length of the
forecaster to the complexity of the learning task and the size of the
observation sequence.
| nlin.CD | we consider the problem of designing almost optimal predictors for dynamical systems from a finite sequence of noisy observations and incomplete knowledge of the dynamics and the noise we first discuss the properties of the optimal bayes predictor and present the limitations of memoryfree forecasting methods and of any finite memory methods in general we then show that a nonparametric support vector machine approach to forecasting can consistently learn the optimal predictor for all pairs of dynamical systems and bounded observational noise processes that possess summable correlation sequences numerical experiments show that this approach adapts the memory length of the forecaster to the complexity of the learning task and the size of the observation sequence | [['we', 'consider', 'the', 'problem', 'of', 'designing', 'almost', 'optimal', 'predictors', 'for', 'dynamical', 'systems', 'from', 'a', 'finite', 'sequence', 'of', 'noisy', 'observations', 'and', 'incomplete', 'knowledge', 'of', 'the', 'dynamics', 'and', 'the', 'noise', 'we', 'first', 'discuss', 'the', 'properties', 'of', 'the', 'optimal', 'bayes', 'predictor', 'and', 'present', 'the', 'limitations', 'of', 'memoryfree', 'forecasting', 'methods', 'and', 'of', 'any', 'finite', 'memory', 'methods', 'in', 'general', 'we', 'then', 'show', 'that', 'a', 'nonparametric', 'support', 'vector', 'machine', 'approach', 'to', 'forecasting', 'can', 'consistently', 'learn', 'the', 'optimal', 'predictor', 'for', 'all', 'pairs', 'of', 'dynamical', 'systems', 'and', 'bounded', 'observational', 'noise', 'processes', 'that', 'possess', 'summable', 'correlation', 'sequences', 'numerical', 'experiments', 'show', 'that', 'this', 'approach', 'adapts', 'the', 'memory', 'length', 'of', 'the', 'forecaster', 'to', 'the', 'complexity', 'of', 'the', 'learning', 'task', 'and', 'the', 'size', 'of', 'the', 'observation', 'sequence']] | [-0.10329022712033728, 0.06277558494602209, -0.09177592461523802, 0.1048804907867199, -0.0599291519747804, -0.12860550291066908, 0.07769119900970153, 0.39998206450887347, -0.3122978946922914, -0.2606813328097696, 0.12402716883073521, -0.2515363748225829, -0.19795193327995747, 0.19225130558580808, -0.09174183942377567, 0.1148278686400179, 0.1065758207205521, 0.0528764365159947, -0.07212550786890737, -0.2916052537464091, 0.3299259754677263, 0.027310579229632148, 0.28209105949170643, -0.030775474198162556, 0.1535946519114077, -0.0008380827655934769, -0.05415685513745184, 0.0060357128269970415, -0.09499087924556554, 0.13862916079613016, 0.2749233802537555, 0.19295907840841328, 0.3484481195230847, -0.3779172384504067, -0.23839157016380974, 0.11702220333821099, 0.10470691099762916, 0.09370158130060072, -0.0175750605640528, -0.2610796344446261, 0.0931623037904501, -0.1398996812392674, -0.061690579354763034, -0.118296202507032, -0.0019941637332996595, 0.05988472320301377, -0.3421277727121892, 0.06482579445911814, 0.1264328632275979, 0.03254365756621827, -0.10984812062942302, -0.10859202612495131, 0.03067860436504302, 0.16195646282690374, 0.05238399524545378, -0.011048950886596805, 0.10324257206090766, -0.1339465571142247, -0.17479220872451348, 0.32621653128577316, -0.08204808109034986, -0.20815548098281675, 0.16720418457913658, -0.1254377658397931, -0.1570668666380579, 0.08938051176399155, 0.22914146486993717, 0.11052113000465476, -0.1325621452708931, 0.06747698506198661, -0.024633575441396754, 0.18896856385728586, -0.008405138100699885, 0.039453916940534406, 0.15010960376214075, 0.2054500435438493, 0.06942055938036545, 0.12601017203465428, -0.09293149839681776, -0.0851957616639202, -0.2817402954334798, -0.1173215963295661, -0.21004683119548564, 0.01616569078405914, -0.14021855157764587, -0.1949232975361393, 0.3784561413421255, 0.23527171188641502, 0.187221790752981, 0.15262335962008522, 0.31454051538653993, 0.09149561211790727, 0.025469006578761923, 0.10688039264388625, 0.16450455980780332, 0.09090137099948428, 0.05853105655506901, -0.2579999414900237, 0.09504704562866169, 0.028586149471179257] |
707.4147 | The role of thermal evaporation in galaxy formation | In colour-magnitude diagrams most galaxies fall in either the ``blue cloud''
or the ``red sequence'', with the red sequence extending to significantly
brighter magnitudes than the blue cloud. The bright-end of the red sequence
comprises elliptical galaxies (Es) with boxy isophotes and luminosity profiles
with shallow central cores, while fainter Es have disky isophotes and power-law
inner surface-brightness (SB) profiles. An analysis of published data reveals
that the centres of galaxies with power-law central SB profiles have younger
stellar populations than the centres of cored galaxies. We argue that thermal
evaporation of cold gas by virial-temperature gas plays an important role in
determining these phenomena. In less massive galaxies, thermal evaporation is
not very efficient, so significant amounts of cold gas can reach the galaxy
centre and fill a central core with newly formed stars, consistent with the
young stellar ages of the cusps of Es with power-law SB profiles. In more
massive galaxies, cold gas is evaporated within a dynamical time, so star
formation is inhibited, and a core in the stellar density profile produced by
dissipationless dynamics cannot be refilled. The different observed properties
of AGN in higher-mass and lower-mass ellipticals are also explained because in
the former the central black holes invariably accrete hot gas, while in the
latter they typically accrete cold gas. An important consequence of our results
is that at the present time there cannot be blue, star-forming galaxies in the
most massive galactic halos, consistent with the observed truncation of the
blue cloud at L*. [abridged]
| astro-ph | in colourmagnitude diagrams most galaxies fall in either the blue cloud or the red sequence with the red sequence extending to significantly brighter magnitudes than the blue cloud the brightend of the red sequence comprises elliptical galaxies es with boxy isophotes and luminosity profiles with shallow central cores while fainter es have disky isophotes and powerlaw inner surfacebrightness sb profiles an analysis of published data reveals that the centres of galaxies with powerlaw central sb profiles have younger stellar populations than the centres of cored galaxies we argue that thermal evaporation of cold gas by virialtemperature gas plays an important role in determining these phenomena in less massive galaxies thermal evaporation is not very efficient so significant amounts of cold gas can reach the galaxy centre and fill a central core with newly formed stars consistent with the young stellar ages of the cusps of es with powerlaw sb profiles in more massive galaxies cold gas is evaporated within a dynamical time so star formation is inhibited and a core in the stellar density profile produced by dissipationless dynamics cannot be refilled the different observed properties of agn in highermass and lowermass ellipticals are also explained because in the former the central black holes invariably accrete hot gas while in the latter they typically accrete cold gas an important consequence of our results is that at the present time there cannot be blue starforming galaxies in the most massive galactic halos consistent with the observed truncation of the blue cloud at l abridged | [['in', 'colourmagnitude', 'diagrams', 'most', 'galaxies', 'fall', 'in', 'either', 'the', 'blue', 'cloud', 'or', 'the', 'red', 'sequence', 'with', 'the', 'red', 'sequence', 'extending', 'to', 'significantly', 'brighter', 'magnitudes', 'than', 'the', 'blue', 'cloud', 'the', 'brightend', 'of', 'the', 'red', 'sequence', 'comprises', 'elliptical', 'galaxies', 'es', 'with', 'boxy', 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707.4148 | Search for phi to K0 K0bar gamma decay with KLOE | The KLOE collaboration has searched for the phi to K0 K0bar gamma decay using
a sample of 1.4 fb-1 of e+e- collisions at W ~ M(phi) collected with the KLOE
experiment at the Frascati e+e- collider DAFNE. No previous search exists for
this decay, while many theory models predict a BR of 10-8 for this channel. We
set a preliminary value of the U.L. on this BR to 1.8x10-8 at 90% C.L.. This
limit rules out most of the existing theory predictions.
| hep-ex | the kloe collaboration has searched for the phi to k0 k0bar gamma decay using a sample of 14 fb1 of ee collisions at w mphi collected with the kloe experiment at the frascati ee collider dafne no previous search exists for this decay while many theory models predict a br of 108 for this channel we set a preliminary value of the ul on this br to 18x108 at 90 cl this limit rules out most of the existing theory predictions | [['the', 'kloe', 'collaboration', 'has', 'searched', 'for', 'the', 'phi', 'to', 'k0', 'k0bar', 'gamma', 'decay', 'using', 'a', 'sample', 'of', '14', 'fb1', 'of', 'ee', 'collisions', 'at', 'w', 'mphi', 'collected', 'with', 'the', 'kloe', 'experiment', 'at', 'the', 'frascati', 'ee', 'collider', 'dafne', 'no', 'previous', 'search', 'exists', 'for', 'this', 'decay', 'while', 'many', 'theory', 'models', 'predict', 'a', 'br', 'of', '108', 'for', 'this', 'channel', 'we', 'set', 'a', 'preliminary', 'value', 'of', 'the', 'ul', 'on', 'this', 'br', 'to', '18x108', 'at', '90', 'cl', 'this', 'limit', 'rules', 'out', 'most', 'of', 'the', 'existing', 'theory', 'predictions']] | [-0.08968883461202495, 0.10953992598806508, -0.09390240249340423, 0.048190905287628996, -0.014638772170292214, -0.15326157466624862, 0.13078395096526946, 0.3025964847241994, -0.17594714494916844, -0.2830222402539221, 0.011610090493923053, -0.41350589618086814, 0.06697029128554277, 0.17598210476135137, 0.13907351990346797, 0.11373727771715494, 0.13778846240602433, 0.05411367230117321, -0.04824832556041656, -0.21233561182161792, 0.18944159613456577, 0.13073545806400944, 0.25422876151278617, 0.06137853091349825, 0.03443566074129194, -0.013845130457775667, -0.051934170559979974, -0.08540341535117477, -0.17383299203938804, 0.06434857291205845, 0.27675393620652355, 0.16664718842948786, 0.19495184475090355, -0.319413048133265, -0.0739460320211947, 0.20763775251107291, 0.11707759452983738, 0.01814945939404424, -0.06210842509317445, -0.34604262198554353, 0.19003339542541653, -0.18752087208849844, -0.05738017249968834, 0.053646991204004735, 0.08558458236511797, -0.12192958382729557, -0.3405638119322248, 0.028019042662344874, -0.06944879305083304, 0.10100438797380776, -0.012733930369722656, -0.2579602756319218, 0.01898606208487763, -0.03667607104289346, 0.05514214535651263, 0.1163883539265953, 0.15000642184750176, -0.11113252069189912, -0.1534732056548819, 0.33145795478485524, -0.07002271442033817, -0.11884853627416306, 0.18615196421305882, -0.23651075189118273, -0.17426593917189165, 0.1656147610861808, 0.23417734070681034, 0.05323458294151351, -0.22809013630030678, 0.15378285262559074, -0.05224252047482878, 0.18389995396719314, 0.1032997288624756, 0.03239173769688932, 0.17753182861488312, 0.22554965923191048, -0.008517910493537784, 0.051619358145399016, -0.11692510988505092, -0.012872550939209759, -0.4265625807223842, -0.10938378380378708, -0.04407593836076558, 0.09101235246052966, -0.024489709147019312, -0.016807041969150303, 0.3265663567697629, 0.09146206271543633, 0.27520241333440937, 0.05804419745982159, 0.26159417838061927, 0.12154046098457912, 0.02022487986723718, 0.05099088884944649, 0.33907268033945004, 0.1010092082178744, 0.16848306779575067, -0.2474844366312027, 0.0026419285451993344, -0.004847412975504994] |
707.4149 | Test configurations and Geodesic rays | For smooth test configurations, there always exist C^{1,1} geodesic rays in
Kahler metric space parallel to the algebraic ray. The $\yen$ invariant agrees
with Futaki invariant, at least under nice assumptions. Explicit examples in
Toric cases are calculated. On simple test configurations, Donaldson's
correspondence between HCMA solution and holomorphic disc family is extended.
| math.DG math.AG | for smooth test configurations there always exist c11 geodesic rays in kahler metric space parallel to the algebraic ray the yen invariant agrees with futaki invariant at least under nice assumptions explicit examples in toric cases are calculated on simple test configurations donaldsons correspondence between hcma solution and holomorphic disc family is extended | [['for', 'smooth', 'test', 'configurations', 'there', 'always', 'exist', 'c11', 'geodesic', 'rays', 'in', 'kahler', 'metric', 'space', 'parallel', 'to', 'the', 'algebraic', 'ray', 'the', 'yen', 'invariant', 'agrees', 'with', 'futaki', 'invariant', 'at', 'least', 'under', 'nice', 'assumptions', 'explicit', 'examples', 'in', 'toric', 'cases', 'are', 'calculated', 'on', 'simple', 'test', 'configurations', 'donaldsons', 'correspondence', 'between', 'hcma', 'solution', 'and', 'holomorphic', 'disc', 'family', 'is', 'extended']] | [-0.19813008609948293, 0.02946342954429675, -0.07931514107182903, 0.20858883539012651, -0.10632894165321903, -0.2006342342509976, -0.0655879696374232, 0.40846089249090206, -0.22435476185472789, -0.22586782083337037, 0.05011576429483885, -0.2616653532088506, -0.09913353149269549, 0.23594630017595472, -0.12911510818971778, 0.08387247639058053, 0.1110534139311398, 0.023178468282633233, -0.15887737181037664, -0.27601156582317826, 0.41283530427388987, -0.005667777450860671, 0.2478204434561842, 0.049228986833938664, 0.16419186704475783, -0.04507862472520122, 0.011653640500779421, -0.021503987926683656, -0.2193855744136392, 0.04984605237665885, 0.28871974582731164, 0.06393928719543905, 0.0759050421908779, -0.3598781215765004, -0.16365504337096903, 0.15824190852284994, 0.061379447324588055, -0.020608814942808647, -0.03443202451925795, -0.25646661411759986, 0.12780920283447178, -0.058316552800671106, -0.24988135509192944, -0.13017613793951724, 0.023294872903036622, -0.01943371479206209, -0.22944350487921597, -0.003173100287621876, 0.0908561859561025, 0.12091590059956289, -0.0848611306842803, -0.06707949315874293, -0.06514831337164033, -0.008461654730984624, 0.10207545303493598, 0.1361667915018943, 0.101988517099394, -0.008728979911022592, -0.09187036005006928, 0.3443596199416239, -0.09209138036371683, -0.3229577512005871, 0.18095893504203492, -0.12429104476973836, -0.1844505534929065, 0.18188063856565728, 0.09055458860612421, 0.16469415354560007, -0.08675673433561933, 0.25324269071252103, -0.11423654754136531, 0.03340075422904261, 0.21349348054917636, -0.060576716666373445, 0.1609911434528119, 0.012581697137991213, 0.12509367627943954, 0.11476927807660035, 0.04457750342311865, -0.16632645717769298, -0.39765649981234436, -0.14123131006841882, -0.12617490243799281, 0.15342123894337215, -0.17257557561119166, -0.20907305957714342, 0.3417329489042596, -0.05012004539581402, 0.15559220032871895, 0.11952966878647511, 0.2307205459208421, -0.020874288240623363, -0.0011997591563553181, 0.17642490680874237, 0.2132303577338187, 0.16005524667419213, -0.009792821156739627, -0.11972135952388305, -0.02616902456381622, 0.17598151939235768] |
707.415 | IAU Symposium 241 - Stellar Populations as Building Blocks of Galaxies | Stellar populations, building blocks of galaxies, are direct tracers of the
star formation history, the chemical enrichment and the assembly of galaxies in
the Universe. They therfore allow us to understand how galaxies formed and
evolved. This last decade has witnessed a revolution in our observations of
galaxies; with larger telescopes and new instruments we are not only able to
look deeper in the Universe, we can also study nearby galaxies with greater
detail. The fact that now is becoming possible to resolve stars up to the
distance of Virgo Cluster allows us to rigorously compare and calibrate the
analysis of the integrated light with resolved stellar populations. These
Proceedings report the considerable progress made in recent years in this
topic. Theorists and observers, researchers of resolved and unresolved stellar
populations, discussed the ingredients of stellar population models, and
rigorously compared them to new data, forcing theorists to develop more refined
models and methods to derive the physical parameters of the stellar
populations. New results from the Milky Way, the Local Group, and nearby and
distant galaxies were presented.
| astro-ph | stellar populations building blocks of galaxies are direct tracers of the star formation history the chemical enrichment and the assembly of galaxies in the universe they therfore allow us to understand how galaxies formed and evolved this last decade has witnessed a revolution in our observations of galaxies with larger telescopes and new instruments we are not only able to look deeper in the universe we can also study nearby galaxies with greater detail the fact that now is becoming possible to resolve stars up to the distance of virgo cluster allows us to rigorously compare and calibrate the analysis of the integrated light with resolved stellar populations these proceedings report the considerable progress made in recent years in this topic theorists and observers researchers of resolved and unresolved stellar populations discussed the ingredients of stellar population models and rigorously compared them to new data forcing theorists to develop more refined models and methods to derive the physical parameters of the stellar populations new results from the milky way the local group and nearby and distant galaxies were presented | [['stellar', 'populations', 'building', 'blocks', 'of', 'galaxies', 'are', 'direct', 'tracers', 'of', 'the', 'star', 'formation', 'history', 'the', 'chemical', 'enrichment', 'and', 'the', 'assembly', 'of', 'galaxies', 'in', 'the', 'universe', 'they', 'therfore', 'allow', 'us', 'to', 'understand', 'how', 'galaxies', 'formed', 'and', 'evolved', 'this', 'last', 'decade', 'has', 'witnessed', 'a', 'revolution', 'in', 'our', 'observations', 'of', 'galaxies', 'with', 'larger', 'telescopes', 'and', 'new', 'instruments', 'we', 'are', 'not', 'only', 'able', 'to', 'look', 'deeper', 'in', 'the', 'universe', 'we', 'can', 'also', 'study', 'nearby', 'galaxies', 'with', 'greater', 'detail', 'the', 'fact', 'that', 'now', 'is', 'becoming', 'possible', 'to', 'resolve', 'stars', 'up', 'to', 'the', 'distance', 'of', 'virgo', 'cluster', 'allows', 'us', 'to', 'rigorously', 'compare', 'and', 'calibrate', 'the', 'analysis', 'of', 'the', 'integrated', 'light', 'with', 'resolved', 'stellar', 'populations', 'these', 'proceedings', 'report', 'the', 'considerable', 'progress', 'made', 'in', 'recent', 'years', 'in', 'this', 'topic', 'theorists', 'and', 'observers', 'researchers', 'of', 'resolved', 'and', 'unresolved', 'stellar', 'populations', 'discussed', 'the', 'ingredients', 'of', 'stellar', 'population', 'models', 'and', 'rigorously', 'compared', 'them', 'to', 'new', 'data', 'forcing', 'theorists', 'to', 'develop', 'more', 'refined', 'models', 'and', 'methods', 'to', 'derive', 'the', 'physical', 'parameters', 'of', 'the', 'stellar', 'populations', 'new', 'results', 'from', 'the', 'milky', 'way', 'the', 'local', 'group', 'and', 'nearby', 'and', 'distant', 'galaxies', 'were', 'presented']] | [-0.02824592358476935, 0.08926912919259188, -0.11842049569068425, 0.12103112834387371, -0.12982013494338238, -0.0495951354540052, 0.0358891508687683, 0.42109597991506814, -0.1743119003279811, -0.3666570057296428, 0.046832465341018106, -0.2639572878574527, -0.07076970716241185, 0.20506592957477227, -0.06485816930009666, -0.00546862342324649, 0.09717839903929193, -0.0972043665492772, -0.03173774023190422, -0.34449352253509385, 0.323746099251234, 0.08974857850510148, 0.15909712974960244, -0.03872092165750082, 0.0684847642463377, -0.10081152809821538, -0.1436273117586138, -0.01912747721016074, -0.19888915313628416, 0.1344647009534418, 0.2746521624632511, 0.17188274614804283, 0.2564411384506182, -0.45178633602596197, -0.2132505107171542, 0.09486413591244784, 0.21093631446278294, 0.10362649074750406, -0.07986067615843875, -0.2846840515618301, 0.04421025575411782, -0.17076330706633253, -0.1987195557097816, -0.002235649518444926, 0.04097149429280914, 0.012616524008472123, -0.16577602178118497, 0.08649520428156007, -0.002509280924773749, 0.07317545762878723, -0.06422932858887134, -0.0909308365145542, -0.028958787760494393, 0.191440879636543, 0.04732802313200963, 0.039759610824458634, 0.14569833101808774, -0.1322649226552552, -0.06687535839311404, 0.38546998535059185, -0.03936480374241966, -0.02338291479758502, 0.28006694240589214, -0.21589318525784926, -0.1917616191018352, 0.03198624473044326, 0.1832466520142726, 0.10624274611993376, -0.20545643524334417, 0.004020698224818698, 0.003576332988092603, 0.1826423843789263, 0.02410684900316696, 0.05267706173394063, 0.30834414943136984, 0.14132709645629762, 0.04008521122972392, 0.06185804035998465, -0.13477998143195322, -0.08151283474442649, -0.19167148403032533, -0.120538239705496, -0.09302307502626748, 0.06150207914063751, -0.08152548386877943, -0.09762910312150902, 0.3821165185192777, 0.16481368450770498, 0.19040832751789571, 0.03989662207642247, 0.29942996974763925, 0.03129023070350893, 0.1411341472256372, 0.08382284958643953, 0.3023662820546862, 0.21285357997575827, 0.08978943866690589, -0.19020719535378272, 0.05740318008029948, -0.029142787732059063] |
707.4151 | Studies of Drell-Yan dimuon events in the CMS experiment | The potential of the Compact Muon Solenoid (CMS) experiment to measure
Drell-Yan muon pairs is discussed. Muon pairs can be measured in CMS with high
precision up to very high invariant masses. The systematic errors are
considered. The potential to carry out precise measurements of the
forward-backward asymmetry is discussed.
| hep-ex | the potential of the compact muon solenoid cms experiment to measure drellyan muon pairs is discussed muon pairs can be measured in cms with high precision up to very high invariant masses the systematic errors are considered the potential to carry out precise measurements of the forwardbackward asymmetry is discussed | [['the', 'potential', 'of', 'the', 'compact', 'muon', 'solenoid', 'cms', 'experiment', 'to', 'measure', 'drellyan', 'muon', 'pairs', 'is', 'discussed', 'muon', 'pairs', 'can', 'be', 'measured', 'in', 'cms', 'with', 'high', 'precision', 'up', 'to', 'very', 'high', 'invariant', 'masses', 'the', 'systematic', 'errors', 'are', 'considered', 'the', 'potential', 'to', 'carry', 'out', 'precise', 'measurements', 'of', 'the', 'forwardbackward', 'asymmetry', 'is', 'discussed']] | [-0.11983827464282512, 0.22401091382838786, -0.040826586298644545, 0.17912522973958403, -0.06458570640534163, -0.12892846006900072, -0.0031488874554634096, 0.36483840458095074, -0.21501598156057297, -0.3320617726445198, 0.018660594287794083, -0.3720629674196243, 0.13183404624462128, 0.22034495474770666, -0.018995757550001144, 0.14543536955490707, 0.1227085516229272, 0.010733096487820148, -0.12388159671798349, -0.256580918058753, 0.2230934150516987, 0.16884530814830215, 0.2560242625325918, 0.12587426405400037, 0.13135535238310694, -0.05184774435125292, -0.09199564138427377, -0.011793395616114139, -0.0614309261739254, 0.046988888271152975, 0.2782745741069084, 0.026675893291831017, 0.05165219746530056, -0.32840795602649453, -0.04708834613673389, 0.16222354851663112, 0.08859289885498584, 0.06567380398511886, -0.13875099416822195, -0.34483422614634035, 0.19861050195991992, -0.17418469215743243, -0.1549760779738426, -0.11949350357055664, -0.016604467742145062, -0.014366200629156082, -0.30503802952356635, 0.07672608315013349, -0.06404422465711831, 0.07319820538163185, 0.03340191449038685, -0.1787179285287857, -0.0009726134128868579, 0.06610398687422275, 0.11229495747946203, 0.14108212302438916, 0.19872703369706868, -0.06810442237183452, -0.19224596106447278, 0.30737620919942854, -0.061592900827527046, -0.23411149702966214, 0.15140570542309434, -0.29696513049304485, -0.09280495763756334, 0.14629469058476388, 0.2223369649797678, 0.06170145370066166, -0.27474672105163334, 0.04039700023829937, 0.013878347799181939, 0.14487186204642058, 0.04116813319735229, 0.04046737425029278, 0.24930751229636372, 0.23574509704252705, 0.08173283584415912, 0.057671950184740126, -0.17856691376306116, -0.03753217892721295, -0.4012821062654257, -0.13291762178763747, -0.08451164928264916, 0.050767507255077365, 0.030019240686669946, -0.033660804033279416, 0.3385612238198519, 0.09180174772627651, 0.2893101341277361, -0.0572070250660181, 0.3323807706683874, 0.10716036272468045, 0.13290808772901072, -0.04620967537164688, 0.32986025132238866, 0.20430128391832114, 0.14155922133475543, -0.2762788115954027, 0.006049578674137592, 0.01365516304038465] |
707.4152 | Stable two-channel Kondo fixed point of an SU(3) quantum defect in a
metal: renormalization group analysis and conductance spikes | We propose a physical realization of the two-channel Kondo (2CK) effect,
where a dynamical defect in a metal has a unique ground state and twofold
degenerate excited states. In a wide range of parameters the interactions with
the electrons renormalize the excited double downward below the bare defect
ground state, thus stabilizing the 2CK fixed point. In addition to the Kondo
temperature T_K the three-state defect exhibits another low-energy scale,
associated with ground-to-excited-state transitions, which can be exponentially
smaller than T_K. Using the perturbative nonequilibrium renormalization group
we demonstrate explicitly that this can provide the long-sought explanation of
the sharp conductance spikes observed by Ralph and Buhrman in ultrasmall
metallic point contacts.
| cond-mat.mes-hall cond-mat.str-el | we propose a physical realization of the twochannel kondo 2ck effect where a dynamical defect in a metal has a unique ground state and twofold degenerate excited states in a wide range of parameters the interactions with the electrons renormalize the excited double downward below the bare defect ground state thus stabilizing the 2ck fixed point in addition to the kondo temperature t_k the threestate defect exhibits another lowenergy scale associated with groundtoexcitedstate transitions which can be exponentially smaller than t_k using the perturbative nonequilibrium renormalization group we demonstrate explicitly that this can provide the longsought explanation of the sharp conductance spikes observed by ralph and buhrman in ultrasmall metallic point contacts | [['we', 'propose', 'a', 'physical', 'realization', 'of', 'the', 'twochannel', 'kondo', '2ck', 'effect', 'where', 'a', 'dynamical', 'defect', 'in', 'a', 'metal', 'has', 'a', 'unique', 'ground', 'state', 'and', 'twofold', 'degenerate', 'excited', 'states', 'in', 'a', 'wide', 'range', 'of', 'parameters', 'the', 'interactions', 'with', 'the', 'electrons', 'renormalize', 'the', 'excited', 'double', 'downward', 'below', 'the', 'bare', 'defect', 'ground', 'state', 'thus', 'stabilizing', 'the', '2ck', 'fixed', 'point', 'in', 'addition', 'to', 'the', 'kondo', 'temperature', 't_k', 'the', 'threestate', 'defect', 'exhibits', 'another', 'lowenergy', 'scale', 'associated', 'with', 'groundtoexcitedstate', 'transitions', 'which', 'can', 'be', 'exponentially', 'smaller', 'than', 't_k', 'using', 'the', 'perturbative', 'nonequilibrium', 'renormalization', 'group', 'we', 'demonstrate', 'explicitly', 'that', 'this', 'can', 'provide', 'the', 'longsought', 'explanation', 'of', 'the', 'sharp', 'conductance', 'spikes', 'observed', 'by', 'ralph', 'and', 'buhrman', 'in', 'ultrasmall', 'metallic', 'point', 'contacts']] | [-0.16843260177474068, 0.2497137310906305, -0.08249292913918711, 0.0661941437031822, -0.004914643515639745, -0.20967403760175682, 0.12086512616978169, 0.3256817112492213, -0.25605197833129417, -0.2658052996203706, -0.0036863025434122226, -0.3091956976180275, -0.11411947973894777, 0.1180109162898818, 0.03630768534567979, -0.014734260127698764, -0.016945760932054604, 0.022692547354119335, -0.09323706194078801, -0.13718822177264606, 0.30390443876889106, 0.01005737907001497, 0.2733528221378455, 0.11514647435480813, 0.038952317428649276, -0.02076265036426317, 0.16073188468864238, 0.0003745192494075577, -0.15673989873739466, 0.03326288187458926, 0.2670887922196909, -0.10423455415041866, 0.23517383693776153, -0.4018956006731133, -0.1968287324898893, 0.06636243110505848, 0.15756229313115613, 0.18159375846834835, -0.06165826836441484, -0.31270358894389494, 0.03573486714850407, -0.16242299011388273, -0.167072370216284, -0.07550110422947386, -0.018160149723559886, -0.06517851953436662, -0.24206008444968108, 0.09200225576447944, 0.0412483262052856, 0.05806829809286707, -0.03999670875900601, -0.11150696091899262, -0.07598663977271802, 0.08535558622548575, 5.530695187615919e-05, 0.024385508166642877, 0.16937923459503967, -0.10958420151953695, -0.13553315172913727, 0.35916183860385203, -0.08928870201188975, -0.0675355781662605, 0.18005905953772902, -0.17291834334180028, -0.09631855885507665, 0.19145564565451834, 0.06660464843147779, 0.07436334459648074, -0.11608975326122196, 0.10645957855583243, -0.04252658063663287, 0.1639090496569511, 0.005289232096139778, 0.0833939601256101, 0.24580672579641277, 0.19240470641493998, 0.07015670510428446, 0.15658881284426562, -0.11040023027191374, -0.11632916262281034, -0.28232918369273347, -0.1352214030795605, -0.22758166099319588, 0.10469555189027577, -0.0729119387779884, -0.19315584529157695, 0.437803895271442, 0.15834886720823543, 0.23575785870219138, -0.0424795714720899, 0.22776511788099735, 0.15814574639027654, 0.05949604753740467, 0.03605409823714646, 0.2176370036679211, 0.11257024534646556, 0.04510301320503155, -0.328434163318561, 0.042396913640209484, 0.04881534576080404] |
707.4153 | Opto-Mechanics of deformable Fabry-Perot Cavities | We investigated the opto-mechanical properties of a Fabry-Perot cavity with a
mirror mounted on a spring. Such a structure allows the cavity length to change
elastically under the effect of light induced forces. This opto-mechanical
coupling is exploited to control the amplitude of mechanical fluctuation of the
mirror. We present a model developed in the classical limit and discuss data
obtained in the particular case for which photo-thermal forces are dominant.
| cond-mat.other | we investigated the optomechanical properties of a fabryperot cavity with a mirror mounted on a spring such a structure allows the cavity length to change elastically under the effect of light induced forces this optomechanical coupling is exploited to control the amplitude of mechanical fluctuation of the mirror we present a model developed in the classical limit and discuss data obtained in the particular case for which photothermal forces are dominant | [['we', 'investigated', 'the', 'optomechanical', 'properties', 'of', 'a', 'fabryperot', 'cavity', 'with', 'a', 'mirror', 'mounted', 'on', 'a', 'spring', 'such', 'a', 'structure', 'allows', 'the', 'cavity', 'length', 'to', 'change', 'elastically', 'under', 'the', 'effect', 'of', 'light', 'induced', 'forces', 'this', 'optomechanical', 'coupling', 'is', 'exploited', 'to', 'control', 'the', 'amplitude', 'of', 'mechanical', 'fluctuation', 'of', 'the', 'mirror', 'we', 'present', 'a', 'model', 'developed', 'in', 'the', 'classical', 'limit', 'and', 'discuss', 'data', 'obtained', 'in', 'the', 'particular', 'case', 'for', 'which', 'photothermal', 'forces', 'are', 'dominant']] | [-0.20088475923591725, 0.17141740774394762, -0.12288014323148928, -0.013745873536862118, -0.06805817987507498, -0.14992660653292084, 0.031475308187253456, 0.3732893282783703, -0.28029448864325673, -0.26347605086548226, 0.05965647543944471, -0.24013546064293542, -0.15999388416678134, 0.24130663112737238, -0.04943452362285953, 0.05900912804030616, 0.03357888546339433, 0.01794869167415399, 0.010005183635987866, -0.13436709737247773, 0.28208948508508397, 0.05471418487091719, 0.28910295330119173, 0.04364018691424936, 0.15423456892456439, 0.04101253333042415, 0.06831705164243008, 0.018512256391031642, -0.16328734672352882, 0.12718202948937535, 0.1681666291699233, -0.061447669410894454, 0.22710107784049297, -0.4590748941237238, -0.18695069677655546, 0.0899382856294093, 0.08686034434514356, 0.1584259595075937, -0.07012903674105576, -0.2781410215153608, -0.004248047181942933, -0.13376876303244015, -0.1799841375470581, -0.010978409456430187, -0.033797935726986805, 0.01582685384479627, -0.2666890204984131, 0.01832456103014484, 0.05840058066934662, 0.05234384961741071, -0.05192014069417754, -0.024385931849164863, 0.003662848307318251, 0.09174109037152268, 0.011243131820073115, -0.03257126287019379, 0.226773137928472, -0.15037911461705578, -0.05762680521903848, 0.4031202880219674, -0.12320801449126341, -0.16580571970102234, 0.15654679244830155, -0.12305912004232826, -0.04746671008523291, 0.0832672260741008, 0.19098707144214233, 0.06598339046181088, -0.13845879839106895, 0.05745077413149362, 0.006898249610996162, 0.21386480365525667, 0.08217192154613809, 0.07142733736619564, 0.19454590622073328, 0.2050970673633241, 0.011045231503552534, 0.22958640718150516, -0.1279682925685873, -0.05569207796853193, -0.30951530599153376, -0.09472151496775554, -0.12849577332676296, 0.04497883863694651, -0.05266902373401074, -0.14252740750089288, 0.3845502945305911, 0.11962522226172617, 0.14321966687689575, -0.004277708977919964, 0.3021381503154694, 0.10536309026024292, 0.11226909570920636, -0.0053661548283318395, 0.39757454425463795, 0.17136553351760803, 0.09028719980138498, -0.33394583289078633, -0.018992581142401193, 0.0164264155302564] |
707.4154 | Remark on statistical model fits to particle ratios in relativistic
heavy ion collisions | In order to determine the chemical freeze-out parameters of the
hadron-emitting source in relativistic heavy ion collisions some studies in
literature perform fits by using as data input a subsample of ratios calculated
out of experimentally measured hadron yields instead of yields themselves. We
show that this is a statistically incorrect method fit, implying a bias in the
extracted parameters.
| nucl-th | in order to determine the chemical freezeout parameters of the hadronemitting source in relativistic heavy ion collisions some studies in literature perform fits by using as data input a subsample of ratios calculated out of experimentally measured hadron yields instead of yields themselves we show that this is a statistically incorrect method fit implying a bias in the extracted parameters | [['in', 'order', 'to', 'determine', 'the', 'chemical', 'freezeout', 'parameters', 'of', 'the', 'hadronemitting', 'source', 'in', 'relativistic', 'heavy', 'ion', 'collisions', 'some', 'studies', 'in', 'literature', 'perform', 'fits', 'by', 'using', 'as', 'data', 'input', 'a', 'subsample', 'of', 'ratios', 'calculated', 'out', 'of', 'experimentally', 'measured', 'hadron', 'yields', 'instead', 'of', 'yields', 'themselves', 'we', 'show', 'that', 'this', 'is', 'a', 'statistically', 'incorrect', 'method', 'fit', 'implying', 'a', 'bias', 'in', 'the', 'extracted', 'parameters']] | [-0.05721517963240207, 0.10106782700424477, -0.1565645145473339, 0.11335010185711465, 0.0033653013060911227, -0.10436207562748154, 0.05650991668640557, 0.38392442221737516, -0.1952516802791822, -0.3522757574031919, -0.01908881944935706, -0.2988034528443369, 0.022348160413488492, 0.19903803322369518, 0.01728417796982547, 0.06190733777524872, 0.12434913816277758, 0.004412819173629001, -0.09309614520377905, -0.20778371496283907, 0.266605321791465, 0.09850901827784413, 0.22989065746255852, 0.029043816472009078, 0.06286010812470784, -0.04129934411148651, -0.11005925658648297, 0.047431328933749156, -0.14216078179792235, 0.055242624446074876, 0.26882324071001196, 0.09230220873477095, 0.16831903519519306, -0.3527086720943956, -0.2166004948854699, 0.08915722161784011, 0.15987521031145321, 0.1454523009429607, -0.08891989106028261, -0.18612205454984965, 0.07483205996390621, -0.1765096504241228, -0.15957064281801803, -0.09653224687139361, -0.013977219192784721, 0.036323299371021786, -0.327206374730094, 0.11903181452682968, -0.0069749333216982375, 0.08254640363156796, -0.045175892312742646, -0.18795319854960604, -0.05575060724454411, 0.05542276173009206, 0.05111992200915465, 0.01846810419238725, 0.18180513887871372, -0.0998025254831823, -0.06633876991395096, 0.420891728441594, -0.09684899718484889, -0.16019731314884403, 0.11143817702481934, -0.14576683318936975, -0.16927870931261677, 0.13380111545576887, 0.18596893047787627, 0.08405995255304595, -0.23769457111040415, 0.006989968017185644, -0.05493899578449585, 0.19778993763198527, 0.05656446709092391, 0.008800118806440447, 0.19479744240515312, 0.13449957295739234, -0.05614717538326473, 0.13183974059741604, -0.11891141132909362, -0.052145571211131954, -0.31666560679421585, -0.06192964127571401, -0.16221598415019906, 0.024077879685229796, -0.07676857432066383, -0.11863522916653399, 0.3698474703261913, 0.20046657573242307, 0.320353195386923, -0.010814178687662391, 0.2891504979866036, 0.09278484004336583, 0.07939875512620655, 0.04450269945565674, 0.2990316703419351, 0.10737544676225821, 0.11263677780911074, -0.23811309406596978, 0.12630199252675145, 0.02708298974607329] |
707.4155 | XMM-Newton and INTEGRAL observations of the black hole candidate XTE
J1817-330 | The galactic black hole candidate XTE J1817-330 was discovered in outburst by
RXTE in January 2006. We present here the results of an XMM-Newton Target of
opportunity observation (TOO), performed on 13 March 2006 (44 days after the
maximum), and an INTEGRAL observation performed on 15-18 February 2006 (18 days
after the maximum). The EPIC-pn camera on-board XMM-Newton was used in the fast
read-out Burst mode to avoid photon pile-up, while the RGSs were used in
Spectroscopy high count-rate mode. We fit both the XMM-Newton and the INTEGRAL
spectra with a two-component model consisting of a thermal accretion disk and a
comptonizing hot corona. The soft X-ray spectrum is dominated by an accretion
disk component, with a maximum temperature decreasing from 0.96+/-0.04 keV at
the time of the INTEGRAL observation to 0.70+/-m0.01 keV on 13 March. The
Optical Monitors on board INTEGRAL and XMM-Newton showed the source with
magnitudes V: 11.3-11.4, U:15.0-15.1 and UVW1:14.7-14.8. The soft X-ray
spectrum, together with the optical and UV data, show a low hydrogen column
density towards the source, and several absorption lines, most likely of
interstellar origin, are detected in the RGS spectrum: OI K-alpha, OI K-beta,
OII, OIII and OVII, which trace both cold and hot components of the ISM. The
soft X-ray spectrum indicates the presence of a black hole, with an estimate
for the upper limit of the mass of 6.0(+4.0/-2.5) Msun.
| astro-ph | the galactic black hole candidate xte j1817330 was discovered in outburst by rxte in january 2006 we present here the results of an xmmnewton target of opportunity observation too performed on 13 march 2006 44 days after the maximum and an integral observation performed on 1518 february 2006 18 days after the maximum the epicpn camera onboard xmmnewton was used in the fast readout burst mode to avoid photon pileup while the rgss were used in spectroscopy high countrate mode we fit both the xmmnewton and the integral spectra with a twocomponent model consisting of a thermal accretion disk and a comptonizing hot corona the soft xray spectrum is dominated by an accretion disk component with a maximum temperature decreasing from 096004 kev at the time of the integral observation to 070m001 kev on 13 march the optical monitors on board integral and xmmnewton showed the source with magnitudes v 113114 u150151 and uvw1147148 the soft xray spectrum together with the optical and uv data show a low hydrogen column density towards the source and several absorption lines most likely of interstellar origin are detected in the rgs spectrum oi kalpha oi kbeta oii oiii and ovii which trace both cold and hot components of the ism the soft xray spectrum indicates the presence of a black hole with an estimate for the upper limit of the mass of 604025 msun | [['the', 'galactic', 'black', 'hole', 'candidate', 'xte', 'j1817330', 'was', 'discovered', 'in', 'outburst', 'by', 'rxte', 'in', 'january', '2006', 'we', 'present', 'here', 'the', 'results', 'of', 'an', 'xmmnewton', 'target', 'of', 'opportunity', 'observation', 'too', 'performed', 'on', '13', 'march', '2006', '44', 'days', 'after', 'the', 'maximum', 'and', 'an', 'integral', 'observation', 'performed', 'on', '1518', 'february', '2006', '18', 'days', 'after', 'the', 'maximum', 'the', 'epicpn', 'camera', 'onboard', 'xmmnewton', 'was', 'used', 'in', 'the', 'fast', 'readout', 'burst', 'mode', 'to', 'avoid', 'photon', 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707.4156 | Long-range fluctuations of random potential landscape as a mechanism of
1/f noise in hydrogenated amorphous silicon | We describe a mechanism, which links the long-range potential fluctuations
induced by charged defects to the low frequency resistance noise widely known
as 1/f noise. This mechanism is amenable to the first principles microscopic
calculation of the noise spectrum, which includes the absolute noise intensity.
We have performed such a calculation for the thin films of hydrogenated
amorphous silicon (a-Si:H) under the condition that current flows perpendicular
to the plane of the films, and found a very good agreement between the
theoretical noise intensity and the measured one. The mechanism described is
quite general. It should be present in a broad class of systems containing
poorly screened charged defects.
| cond-mat.stat-mech cond-mat.dis-nn cond-mat.mtrl-sci | we describe a mechanism which links the longrange potential fluctuations induced by charged defects to the low frequency resistance noise widely known as 1f noise this mechanism is amenable to the first principles microscopic calculation of the noise spectrum which includes the absolute noise intensity we have performed such a calculation for the thin films of hydrogenated amorphous silicon asih under the condition that current flows perpendicular to the plane of the films and found a very good agreement between the theoretical noise intensity and the measured one the mechanism described is quite general it should be present in a broad class of systems containing poorly screened charged defects | [['we', 'describe', 'a', 'mechanism', 'which', 'links', 'the', 'longrange', 'potential', 'fluctuations', 'induced', 'by', 'charged', 'defects', 'to', 'the', 'low', 'frequency', 'resistance', 'noise', 'widely', 'known', 'as', '1f', 'noise', 'this', 'mechanism', 'is', 'amenable', 'to', 'the', 'first', 'principles', 'microscopic', 'calculation', 'of', 'the', 'noise', 'spectrum', 'which', 'includes', 'the', 'absolute', 'noise', 'intensity', 'we', 'have', 'performed', 'such', 'a', 'calculation', 'for', 'the', 'thin', 'films', 'of', 'hydrogenated', 'amorphous', 'silicon', 'asih', 'under', 'the', 'condition', 'that', 'current', 'flows', 'perpendicular', 'to', 'the', 'plane', 'of', 'the', 'films', 'and', 'found', 'a', 'very', 'good', 'agreement', 'between', 'the', 'theoretical', 'noise', 'intensity', 'and', 'the', 'measured', 'one', 'the', 'mechanism', 'described', 'is', 'quite', 'general', 'it', 'should', 'be', 'present', 'in', 'a', 'broad', 'class', 'of', 'systems', 'containing', 'poorly', 'screened', 'charged', 'defects']] | [-0.13767974713065345, 0.15348142653772043, -0.044359002142734485, 0.08012429852606814, 0.010081091207887876, -0.14793235658232226, 0.03283167494366954, 0.4037505037604122, -0.26196507000526703, -0.29195375494453885, 0.037882392885325765, -0.27485301643780885, -0.13869909074054945, 0.17548691062683905, -0.03185305723476164, 0.037919917716345654, -0.004329097166725802, -0.04575685837195007, -0.01813421732801602, -0.17473831543818527, 0.2709350209969412, 0.10767840219388178, 0.3285624465409564, 0.06857073772004421, 0.06149725531390227, -0.04032259107217056, 0.024256244118094718, 0.05683816387958893, -0.14382319719939965, 0.06260177033415082, 0.2411725884218008, -0.06181391553286839, 0.1779186141019294, -0.4292268379155649, -0.2367266252030268, 0.07895148389250758, 0.07613567327610601, 0.13948086491751766, -0.08804510821750679, -0.24802853676293968, 0.08599513861427613, -0.1265596849224402, -0.12674890526777577, -0.07551462932088233, 0.010384220117275867, 0.005115486903077658, -0.26603256540058967, 0.09736701893543295, 0.07913659264359178, 0.03674343748684596, -0.06784866783883287, -0.11533387179952115, -0.04837551275951737, 0.0956380360699985, 0.05492315814326253, 0.022385238422029607, 0.2158159234074004, -0.11221199702907252, -0.0851233618274126, 0.38658859722589684, -0.08339215162714277, -0.15811971788627838, 0.18155328460772513, -0.16314131135138077, -0.09322450755146938, 0.18373626564125264, 0.11378254796967867, 0.12338334081455245, -0.20570061991841387, 0.05087797289615158, 0.017857399931468003, 0.1962915095361804, 0.03623359416901997, 0.07609104734001448, 0.20708944712586086, 0.19981155870802736, 0.013108366602655807, 0.14054326903408204, -0.10907494293543438, -0.049463322206716474, -0.27960392907945386, -0.11477200946676622, -0.19007350901171668, 0.06912551935625459, -0.04872065894877102, -0.2239400977268815, 0.3905239951446516, 0.13581093018789084, 0.16677960467208688, -0.015244891389631966, 0.30900192184698416, 0.11328112731213519, 0.06314700139673649, 0.015389785416202124, 0.2653871873957575, 0.18632704822919033, 0.12098544383853559, -0.21797460261219687, 0.09334970809040813, -0.03160080810103121] |
707.4157 | Phase Diagram of CeCoIn_5 in the Vicinity of H_{c2} as Determined by NMR | We report ^{115}In nuclear magnetic resonance (NMR) measurements in the
heavy-fermion superconductor CeCoIn_5 as a function of temperature in different
magnetic fields applied parallel to the $(\hat a, \hat b)$ plane. The
measurements probe a part of the phase diagram in the vicinity of the
superconducting critical field H_{c2} where a possible inhomogeneous
superconducting state, Fulde-Ferrel-Larkin-Ovchinnikov (FFLO), is stabilized.
We have identified clear NMR signatures of two phase transitions occurring in
this part of the phase diagram. The first order phase transitions are
characterized by the sizable discontinuity of the shift. We find that a
continuous second order phase transition from the superconducting to the FFLO
state occurs at temperature below which the shift becomes temperature
independent. We have compiled the first phase diagram of CeCoIn_5 in the
vicinity of H_{c2} from NMR data and found that it is in agreement with the one
determined by thermodynamic measurements.
| cond-mat.str-el cond-mat.supr-con | we report 115in nuclear magnetic resonance nmr measurements in the heavyfermion superconductor cecoin_5 as a function of temperature in different magnetic fields applied parallel to the hat a hat b plane the measurements probe a part of the phase diagram in the vicinity of the superconducting critical field h_c2 where a possible inhomogeneous superconducting state fuldeferrellarkinovchinnikov fflo is stabilized we have identified clear nmr signatures of two phase transitions occurring in this part of the phase diagram the first order phase transitions are characterized by the sizable discontinuity of the shift we find that a continuous second order phase transition from the superconducting to the fflo state occurs at temperature below which the shift becomes temperature independent we have compiled the first phase diagram of cecoin_5 in the vicinity of h_c2 from nmr data and found that it is in agreement with the one determined by thermodynamic measurements | [['we', 'report', '115in', 'nuclear', 'magnetic', 'resonance', 'nmr', 'measurements', 'in', 'the', 'heavyfermion', 'superconductor', 'cecoin_5', 'as', 'a', 'function', 'of', 'temperature', 'in', 'different', 'magnetic', 'fields', 'applied', 'parallel', 'to', 'the', 'hat', 'a', 'hat', 'b', 'plane', 'the', 'measurements', 'probe', 'a', 'part', 'of', 'the', 'phase', 'diagram', 'in', 'the', 'vicinity', 'of', 'the', 'superconducting', 'critical', 'field', 'h_c2', 'where', 'a', 'possible', 'inhomogeneous', 'superconducting', 'state', 'fuldeferrellarkinovchinnikov', 'fflo', 'is', 'stabilized', 'we', 'have', 'identified', 'clear', 'nmr', 'signatures', 'of', 'two', 'phase', 'transitions', 'occurring', 'in', 'this', 'part', 'of', 'the', 'phase', 'diagram', 'the', 'first', 'order', 'phase', 'transitions', 'are', 'characterized', 'by', 'the', 'sizable', 'discontinuity', 'of', 'the', 'shift', 'we', 'find', 'that', 'a', 'continuous', 'second', 'order', 'phase', 'transition', 'from', 'the', 'superconducting', 'to', 'the', 'fflo', 'state', 'occurs', 'at', 'temperature', 'below', 'which', 'the', 'shift', 'becomes', 'temperature', 'independent', 'we', 'have', 'compiled', 'the', 'first', 'phase', 'diagram', 'of', 'cecoin_5', 'in', 'the', 'vicinity', 'of', 'h_c2', 'from', 'nmr', 'data', 'and', 'found', 'that', 'it', 'is', 'in', 'agreement', 'with', 'the', 'one', 'determined', 'by', 'thermodynamic', 'measurements']] | [-0.20955320032363808, 0.2563410211178298, -0.06978977436980081, -0.007491900413328581, -0.04501832999930893, -0.1022971926376576, 0.122538043731962, 0.33805616249682735, -0.2237494619564402, -0.2730208718268251, 0.03473163426482446, -0.3131611512067753, -0.07940496546782654, 0.17257353891240987, 0.09263868831928719, 0.005900010350160301, -0.07514094567631145, 0.05517250725785522, -0.16919435729387505, -0.16764445576464404, 0.34138119560540525, -0.03971124206971679, 0.30173749231884406, 0.03272739742140009, 0.005927629468371035, -0.05754762982345513, 0.12407877014295475, 0.035177386652149666, -0.18724029513464915, -0.060588407081652536, 0.3031404399426302, -0.04236310761941265, 0.1425258290664469, -0.3670811194460839, -0.18541150718197427, 0.10867552105117136, 0.13987673188219904, 0.13710165143286734, -0.08040931564441102, -0.3193486353911057, -0.005146829342167522, -0.10564660241928052, -0.12141313588536168, -0.09801248484291136, -0.03055531523942419, -0.04262419533915818, -0.2401602677371655, 0.11951836920972611, 0.03809082758616077, 0.13703589221915682, -0.09050892855707757, -0.11384157456356932, -0.041704153682961057, 0.056379862920997816, 0.010481482658006653, 0.14903466612717287, 0.15001734430788438, -0.11594020781528859, -0.08069349215303019, 0.33283842161197114, -0.07628982370197018, -0.0009371199921588413, 0.10767939421537055, -0.23605027109560733, -0.11746786458644311, 0.18237348036160944, 0.09272820452807119, 0.07554224068676499, -0.10392668836976628, 0.058330834433798225, 0.019982503786859278, 0.19676494755077403, 0.009710961590974114, 0.03980034858894312, 0.22800567404467714, 0.1800206027668586, 0.010725317041490328, 0.19434368053790987, -0.1614960478304105, -0.09785504608353714, -0.2949536206370622, -0.16064762826253837, -0.22748554185602335, -0.013997521224695988, -0.05121181756751596, -0.19176947457615184, 0.4043483919451466, 0.16665466969857948, 0.2278507286682725, -0.135520080613394, 0.26423919320773537, 0.12584321205567167, 0.05807928183639888, 0.03592273231117508, 0.307442878519273, 0.20297904837266165, 0.18559819663799293, -0.31112229616111425, 0.07858942071215023, 0.0151106183247238] |
707.4158 | Spontaneous emission from a two--level atom tunneling in a double--well
potential | We study a two-level atom in a double--well potential coupled to a continuum
of electromagnetic modes (black body radiation in three dimensions at zero
absolute temperature). Internal and external degrees of the atom couple due to
recoil during emission of a photon. We provide a full analysis of the problem
in the long wavelengths limit up to the border of the Lamb-Dicke regime,
including a study of the internal dynamics of the atom (spontaneous emission),
the tunneling motion, and the electric field of the emitted photon. The
tunneling process itself may or may not decohere depending on the wavelength
corresponding to the internal transition compared to the distance between the
two wells of the external potential, as well as on the spontaneous emission
rate compared to the tunneling frequency. Interference fringes appear in the
emitted light from a tunneling atom, or an atom in a stationary coherent
superposition of its center--of--mass motion, if the wavelength is comparable
to the well separation, but only if the external state of the atom is
post-selected.
| quant-ph | we study a twolevel atom in a doublewell potential coupled to a continuum of electromagnetic modes black body radiation in three dimensions at zero absolute temperature internal and external degrees of the atom couple due to recoil during emission of a photon we provide a full analysis of the problem in the long wavelengths limit up to the border of the lambdicke regime including a study of the internal dynamics of the atom spontaneous emission the tunneling motion and the electric field of the emitted photon the tunneling process itself may or may not decohere depending on the wavelength corresponding to the internal transition compared to the distance between the two wells of the external potential as well as on the spontaneous emission rate compared to the tunneling frequency interference fringes appear in the emitted light from a tunneling atom or an atom in a stationary coherent superposition of its centerofmass motion if the wavelength is comparable to the well separation but only if the external state of the atom is postselected | [['we', 'study', 'a', 'twolevel', 'atom', 'in', 'a', 'doublewell', 'potential', 'coupled', 'to', 'a', 'continuum', 'of', 'electromagnetic', 'modes', 'black', 'body', 'radiation', 'in', 'three', 'dimensions', 'at', 'zero', 'absolute', 'temperature', 'internal', 'and', 'external', 'degrees', 'of', 'the', 'atom', 'couple', 'due', 'to', 'recoil', 'during', 'emission', 'of', 'a', 'photon', 'we', 'provide', 'a', 'full', 'analysis', 'of', 'the', 'problem', 'in', 'the', 'long', 'wavelengths', 'limit', 'up', 'to', 'the', 'border', 'of', 'the', 'lambdicke', 'regime', 'including', 'a', 'study', 'of', 'the', 'internal', 'dynamics', 'of', 'the', 'atom', 'spontaneous', 'emission', 'the', 'tunneling', 'motion', 'and', 'the', 'electric', 'field', 'of', 'the', 'emitted', 'photon', 'the', 'tunneling', 'process', 'itself', 'may', 'or', 'may', 'not', 'decohere', 'depending', 'on', 'the', 'wavelength', 'corresponding', 'to', 'the', 'internal', 'transition', 'compared', 'to', 'the', 'distance', 'between', 'the', 'two', 'wells', 'of', 'the', 'external', 'potential', 'as', 'well', 'as', 'on', 'the', 'spontaneous', 'emission', 'rate', 'compared', 'to', 'the', 'tunneling', 'frequency', 'interference', 'fringes', 'appear', 'in', 'the', 'emitted', 'light', 'from', 'a', 'tunneling', 'atom', 'or', 'an', 'atom', 'in', 'a', 'stationary', 'coherent', 'superposition', 'of', 'its', 'centerofmass', 'motion', 'if', 'the', 'wavelength', 'is', 'comparable', 'to', 'the', 'well', 'separation', 'but', 'only', 'if', 'the', 'external', 'state', 'of', 'the', 'atom', 'is', 'postselected']] | [-0.13482837485241553, 0.19322896408207166, -0.050289345041545495, 0.037893353180395425, -0.006388854373484677, -0.12069039907967022, 0.08049153710368934, 0.383014349976208, -0.2581214280040978, -0.2878751027787667, 0.021477355312442322, -0.302100291453995, -0.020982810894438868, 0.16669981838691286, 0.01134246234717064, 0.011247943794059696, 0.022251856042245447, 0.06281379382765641, -0.008250202478700166, -0.1449041811371666, 0.3011043208142266, 0.07192596657537358, 0.27353274682130624, 0.06682198963041396, 0.11309481028001755, 0.015248512619765215, 0.05213783932971595, -0.012994438810490592, -0.05449713468497489, 0.04689627956141458, 0.17543494845144883, 0.03268653884134797, 0.22806249466876305, -0.44238597678215524, -0.1882004719769019, 0.09172532872464724, 0.16199649088534793, 0.19133547189927033, -0.0161273283247706, -0.3165255758564833, -0.053773276686538446, -0.14442022150750597, -0.14769305411433845, 0.008714586818525783, 0.041362889260622177, 0.03029494653293473, -0.253001477702001, 0.07669538836641952, 0.04004771209783516, 0.022401405300750115, -0.07740411560286681, -0.01677583998507755, -0.04273842410915423, 0.08047953646814147, 0.03623161495505523, 0.04069280483608329, 0.20574041243187738, -0.14697791803032592, -0.11597975650612741, 0.4001894544503451, -0.11578624389069371, -0.14694167235541308, 0.20571647475603536, -0.2083881025386671, -0.0009240645882781854, 0.1858352257499233, 0.15083075956127412, 0.11847750638302978, -0.11458093215113094, 0.052528780229189324, 0.040014641651840405, 0.2005728533556468, 0.13972646909830874, 0.11957447232440287, 0.2622288106507513, 0.13315784938763395, 0.031540022101686445, 0.17631485625603344, -0.1647887405896083, -0.09754728103803774, -0.31753842000914523, -0.13497090279625534, -0.2098045685805034, 0.1025032535917701, -0.047364833498821014, -0.1698472633860399, 0.39800058812888467, 0.12113222870674542, 0.17415775634283417, -0.04042127736584218, 0.3281108025856706, 0.1461451119989655, 0.0449797525097681, 0.005129581636770866, 0.3323511002466169, 0.1604408558111551, 0.08611298260701344, -0.3120212070603292, -0.016210532793572152, -0.032913022463448176] |
707.4159 | Density theorems for bipartite graphs and related Ramsey-type results | In this paper, we present several density-type theorems which show how to
find a copy of a sparse bipartite graph in a graph of positive density. Our
results imply several new bounds for classical problems in graph Ramsey theory
and improve and generalize earlier results of various researchers. The proofs
combine probabilistic arguments with some combinatorial ideas. In addition,
these techniques can be used to study properties of graphs with a forbidden
induced subgraph, edge intersection patterns in topological graphs, and to
obtain several other Ramsey-type statements.
| math.CO | in this paper we present several densitytype theorems which show how to find a copy of a sparse bipartite graph in a graph of positive density our results imply several new bounds for classical problems in graph ramsey theory and improve and generalize earlier results of various researchers the proofs combine probabilistic arguments with some combinatorial ideas in addition these techniques can be used to study properties of graphs with a forbidden induced subgraph edge intersection patterns in topological graphs and to obtain several other ramseytype statements | [['in', 'this', 'paper', 'we', 'present', 'several', 'densitytype', 'theorems', 'which', 'show', 'how', 'to', 'find', 'a', 'copy', 'of', 'a', 'sparse', 'bipartite', 'graph', 'in', 'a', 'graph', 'of', 'positive', 'density', 'our', 'results', 'imply', 'several', 'new', 'bounds', 'for', 'classical', 'problems', 'in', 'graph', 'ramsey', 'theory', 'and', 'improve', 'and', 'generalize', 'earlier', 'results', 'of', 'various', 'researchers', 'the', 'proofs', 'combine', 'probabilistic', 'arguments', 'with', 'some', 'combinatorial', 'ideas', 'in', 'addition', 'these', 'techniques', 'can', 'be', 'used', 'to', 'study', 'properties', 'of', 'graphs', 'with', 'a', 'forbidden', 'induced', 'subgraph', 'edge', 'intersection', 'patterns', 'in', 'topological', 'graphs', 'and', 'to', 'obtain', 'several', 'other', 'ramseytype', 'statements']] | [-0.08371503013333348, 0.0916254875603421, -0.12437040204631872, 0.10003377710624288, -0.1284538471172082, -0.1235548725522969, 0.07300256865216825, 0.3701447780490264, -0.2773015350424524, -0.3297633416094314, 0.12397554544089683, -0.2685803769734399, -0.2129690201722899, 0.19025099599444917, -0.1481717660536069, 0.06424766648012138, 0.11716031581805698, 0.035447531144252455, -0.030241634398240506, -0.2544127348807089, 0.30718347066799284, -0.07368802724555991, 0.20597184101526422, 0.13225421054427908, -0.012319739415556535, 0.004552842979587015, -0.07086063188704095, 0.1047035239786766, -0.23449522951596427, 0.17917016699867344, 0.3248594082870531, 0.18019460241749197, 0.23783355941674833, -0.46967186641761627, -0.2115172209839026, 0.1472474359371967, 0.10066467869609337, 0.14378429530054632, -0.04018438520744957, -0.2821054544129901, 0.12492450220167808, -0.12535672382740626, -0.0819520147560143, -0.09573345593894007, -0.02285906247494892, 0.05649913203816904, -0.25339649990200996, -0.021026312261177547, 0.14794375081064887, 0.052187782391135036, 0.04338631888479529, -0.13842283976638967, 0.05669236204174786, 0.09647796024172299, 0.0055410679558227805, 0.008384611474981681, 0.0596053415652493, -0.11552806726881656, -0.2972505585472474, 0.3201300100819475, -0.04551334259496338, -0.15271269557890535, 0.17731581061366603, -0.10937585813346608, -0.27360601631132353, 0.057591138585556256, 0.13693614330827847, 0.14198237587430182, -0.11105223251613734, 0.08046810946965205, -0.10911321360216444, 0.1164546224995163, 0.11053418430189292, 0.0959894625341584, 0.10059808156099813, 0.07976747643545098, 0.13421641033271264, 0.20883006381403504, 0.038850422589986146, -0.05017590752920543, -0.24584391892983995, -0.1050617000965894, -0.17802525453012566, 0.015918184007550108, -0.16354152087029203, -0.19419195141038462, 0.42920892253175547, 0.17716803858471478, 0.20501975859675942, 0.09745290445233427, 0.2400074933880362, 0.04821075038882722, 0.010907738394607073, 0.09369536177736931, 0.15717336810401364, 0.22286475130795746, 0.04070048559799619, -0.12405454221679348, 0.018245028987548303, 0.12641883148790348] |
707.416 | Finite vertex algebras and nilpotence | I show that simple finite vertex algebras are commutative, and that the Lie
conformal algebra structure underlying a reduced (i.e., without nilpotent
elements) finite vertex algebra is nilpotent.
| math.QA | i show that simple finite vertex algebras are commutative and that the lie conformal algebra structure underlying a reduced ie without nilpotent elements finite vertex algebra is nilpotent | [['i', 'show', 'that', 'simple', 'finite', 'vertex', 'algebras', 'are', 'commutative', 'and', 'that', 'the', 'lie', 'conformal', 'algebra', 'structure', 'underlying', 'a', 'reduced', 'ie', 'without', 'nilpotent', 'elements', 'finite', 'vertex', 'algebra', 'is', 'nilpotent']] | [-0.14830647369048425, 0.17112982339624846, -0.02243574908269303, 0.02536093332621801, -0.30227225799379603, -0.2369976859772578, -0.11874537336240922, 0.40600617908473524, -0.4245857554487884, -0.07627099782361516, 0.11805129789614252, -0.2504507186489978, -0.12790753437937902, 0.046329812080200226, -0.14807108559762128, -0.1458517170311617, 0.13949803050075257, 0.20782001328188926, -0.18184952506063773, -0.2641759188180523, 0.4427780373288052, -0.0642503041391527, 0.21303372577364957, 0.0046389164802219185, 0.18649577991371707, 0.04916366327753557, -0.010484171898237296, 0.061195492245522995, -0.06973072698799244, 0.031505875322701674, 0.37460017347309205, 0.0509960622127567, 0.18542798868812888, -0.4037811493368021, -0.07203931544375207, 0.18090475350618362, 0.20738727487956307, 0.032442983106843064, -0.09935378222559978, -0.17963678443006106, 0.18408551502839796, -0.30238183148737463, -0.16039452558782483, -0.025072114026573087, 0.12764540680551104, -0.11212158861703106, -0.23286903050237534, -0.009707223557467972, 0.1264537330051618, 0.20299214271030255, -0.03816218006457867, -0.10144995473612133, -0.19627309723624162, 0.0463852238275909, -0.24936721601157583, -0.03162850241642445, 0.19417936877081438, -0.020016429513426765, -0.22048023649092233, 0.36485995950975586, 0.047148738987743855, -0.2498303581627884, 0.07605698345495122, -0.2754282713535109, -0.18630481336731464, 0.10870772473780173, -0.03746521765632289, 0.1501762711309961, -0.07471189455204044, 0.3727772046258906, -0.1413050716343735, -0.04964883891599519, 0.015871893930515007, -0.022373236549486007, 0.09161104474748884, 0.07058272104976433, 0.07146125636063516, 0.015993589468832527, 0.21429576759692281, 0.014555814717563667, -0.46043882026736227, -0.08664410451560148, -0.10293695977556386, 0.16158623205098724, -0.2407736468256709, -0.20537121926567384, 0.45309156382323373, 0.1161785281952429, 0.14833823504990765, 0.12422873572047267, 0.1666785023574318, 0.12250626516262335, 0.23449717282450624, 0.11364055902231485, 0.04724543295534594, 0.3182782278662281, -0.16253605400561355, -0.22305778362455644, -0.10188337052906198, 0.32503228315285276] |
707.4161 | Magnetic Field Generation in Planets and Satellites by Natural Nuclear
Fission Reactors | One of the most fundamental problems in physics has been to understand the
nature of the mechanism that generates the geomagnetic field and the magnetic
fields of other planets and satellites. For decades, the dynamo mechanism,
thought to be responsible for generating the geomagnetic field and other
planetary magnetic fields, has been ascribed to convection in each planet's
iron-alloy core. Recently, I described the problems inherent in Earth-core
convection and proposed instead that the geomagnetic field is produced by a
dynamo mechanism involving convection, not in the fluid core, but in the
electrically conductive, fluid, fission-product sub-shell of a natural nuclear
fission reactor at the center of the Earth, called the georeactor. Here I set
forth in detail the commonality in the Solar System of the matter like that of
the inside of the Earth, which is my basis for generalizing the concept of
planetary magnetic field generation by natural planetocentric nuclear fission
reactors.
| physics.geo-ph physics.gen-ph physics.space-ph | one of the most fundamental problems in physics has been to understand the nature of the mechanism that generates the geomagnetic field and the magnetic fields of other planets and satellites for decades the dynamo mechanism thought to be responsible for generating the geomagnetic field and other planetary magnetic fields has been ascribed to convection in each planets ironalloy core recently i described the problems inherent in earthcore convection and proposed instead that the geomagnetic field is produced by a dynamo mechanism involving convection not in the fluid core but in the electrically conductive fluid fissionproduct subshell of a natural nuclear fission reactor at the center of the earth called the georeactor here i set forth in detail the commonality in the solar system of the matter like that of the inside of the earth which is my basis for generalizing the concept of planetary magnetic field generation by natural planetocentric nuclear fission reactors | [['one', 'of', 'the', 'most', 'fundamental', 'problems', 'in', 'physics', 'has', 'been', 'to', 'understand', 'the', 'nature', 'of', 'the', 'mechanism', 'that', 'generates', 'the', 'geomagnetic', 'field', 'and', 'the', 'magnetic', 'fields', 'of', 'other', 'planets', 'and', 'satellites', 'for', 'decades', 'the', 'dynamo', 'mechanism', 'thought', 'to', 'be', 'responsible', 'for', 'generating', 'the', 'geomagnetic', 'field', 'and', 'other', 'planetary', 'magnetic', 'fields', 'has', 'been', 'ascribed', 'to', 'convection', 'in', 'each', 'planets', 'ironalloy', 'core', 'recently', 'i', 'described', 'the', 'problems', 'inherent', 'in', 'earthcore', 'convection', 'and', 'proposed', 'instead', 'that', 'the', 'geomagnetic', 'field', 'is', 'produced', 'by', 'a', 'dynamo', 'mechanism', 'involving', 'convection', 'not', 'in', 'the', 'fluid', 'core', 'but', 'in', 'the', 'electrically', 'conductive', 'fluid', 'fissionproduct', 'subshell', 'of', 'a', 'natural', 'nuclear', 'fission', 'reactor', 'at', 'the', 'center', 'of', 'the', 'earth', 'called', 'the', 'georeactor', 'here', 'i', 'set', 'forth', 'in', 'detail', 'the', 'commonality', 'in', 'the', 'solar', 'system', 'of', 'the', 'matter', 'like', 'that', 'of', 'the', 'inside', 'of', 'the', 'earth', 'which', 'is', 'my', 'basis', 'for', 'generalizing', 'the', 'concept', 'of', 'planetary', 'magnetic', 'field', 'generation', 'by', 'natural', 'planetocentric', 'nuclear', 'fission', 'reactors']] | [-0.09991842356595679, 0.23008498640158792, -0.052063646473696615, 0.0979758262332967, -0.07445978565146123, -0.040564832779779736, -0.011648952504437343, 0.28015737575204935, -0.2541244210883841, -0.3223209087706469, 0.05214689222843161, -0.21574179936516907, -0.12389826281239687, 0.2174938171006301, -0.043586027262172373, -0.0017915527371300105, 0.031004650694823343, 0.041253907385349176, 0.02734065112000441, -0.17733555090510184, 0.3083200228577054, 0.10360398186139422, 0.19275507336068484, 0.04024797133657034, 0.08661112792217751, -0.09179489857371093, 0.0190025550721128, -0.011410585927223068, -0.0794854299065918, 0.09327131809873714, 0.2241444775554674, 0.11709687349027376, 0.24388489887434867, -0.5089785242148863, -0.2625573867798046, 0.07811843019566236, 0.12561817305676906, 0.06436288834236002, -0.10044367838456156, -0.2474732456661858, 0.08143566270036245, -0.17292528056533507, -0.1255051086830231, -0.006510116474161205, 0.06860519465046867, 0.023503103886968364, -0.26529308513196465, 0.04159456293107759, 0.09335739893140271, 0.13116242765795952, -0.12889700253597564, -0.1327579971912676, -0.03223930112865382, 0.0887903782563418, 0.12644637000421366, 0.04198837340535486, 0.19077457205713513, -0.14776934029038363, -0.08492497908213219, 0.45246880205676837, -0.014664814088343692, -0.09795978468739325, 0.17907494880879918, -0.21509481363875024, -0.10886505158508525, 0.13358129901214946, 0.14495931238276896, 0.09537534805751266, -0.15145138584174753, 0.06344312431106802, -0.05413303283816264, 0.09423596345594311, 0.06806955905326831, -0.016860922538672326, 0.30716911142119785, 0.1909939056137589, 0.0548451389408643, 0.05943733937673125, -0.16708640359323837, -0.1090243974049253, -0.23448706084076357, -0.14342647508468503, -0.1468342526913225, 0.006889201570671277, -0.022301853868389027, -0.1658476265208199, 0.4309545948103168, 0.1477565981806834, 0.1005690375014263, -0.10957923748460446, 0.28256889385189493, 0.07455805840293703, 0.11888321398550437, 0.0876143472634402, 0.32933746616270854, 0.20567521041417433, 0.1486299221336939, -0.2693996835146952, 0.08893255614736452, 0.06320175722704019] |
707.4162 | Charmonium excited state spectrum in lattice QCD | Working with a large basis of covariant derivative-based meson interpolating
fields we demonstrate the feasibility of reliably extracting multiple excited
states using a variational method. The study is performed on quenched
anisotropic lattices with clover quarks at the charm mass. We demonstrate how a
knowledge of the continuum limit of a lattice interpolating field can give
additional spin-assignment information, even at a single lattice spacing, via
the overlap factors of interpolating field and state. Excited state masses are
systematically high with respect to quark potential model predictions and,
where they exist, experimental states. We conclude that this is most likely a
result of the quenched approximation.
| hep-lat hep-ph | working with a large basis of covariant derivativebased meson interpolating fields we demonstrate the feasibility of reliably extracting multiple excited states using a variational method the study is performed on quenched anisotropic lattices with clover quarks at the charm mass we demonstrate how a knowledge of the continuum limit of a lattice interpolating field can give additional spinassignment information even at a single lattice spacing via the overlap factors of interpolating field and state excited state masses are systematically high with respect to quark potential model predictions and where they exist experimental states we conclude that this is most likely a result of the quenched approximation | [['working', 'with', 'a', 'large', 'basis', 'of', 'covariant', 'derivativebased', 'meson', 'interpolating', 'fields', 'we', 'demonstrate', 'the', 'feasibility', 'of', 'reliably', 'extracting', 'multiple', 'excited', 'states', 'using', 'a', 'variational', 'method', 'the', 'study', 'is', 'performed', 'on', 'quenched', 'anisotropic', 'lattices', 'with', 'clover', 'quarks', 'at', 'the', 'charm', 'mass', 'we', 'demonstrate', 'how', 'a', 'knowledge', 'of', 'the', 'continuum', 'limit', 'of', 'a', 'lattice', 'interpolating', 'field', 'can', 'give', 'additional', 'spinassignment', 'information', 'even', 'at', 'a', 'single', 'lattice', 'spacing', 'via', 'the', 'overlap', 'factors', 'of', 'interpolating', 'field', 'and', 'state', 'excited', 'state', 'masses', 'are', 'systematically', 'high', 'with', 'respect', 'to', 'quark', 'potential', 'model', 'predictions', 'and', 'where', 'they', 'exist', 'experimental', 'states', 'we', 'conclude', 'that', 'this', 'is', 'most', 'likely', 'a', 'result', 'of', 'the', 'quenched', 'approximation']] | [-0.10863343545102648, 0.22929261950332494, -0.1079078424455864, 0.09960371664436977, -0.022314033497657093, -0.0992037289642862, 0.10865231025077048, 0.39968089276836033, -0.19554107328987724, -0.2747657616916556, 0.06674496248098356, -0.2688213530196143, -0.05103532889015263, 0.09713908847022269, 0.06495668570111905, 0.07407251268824828, 0.10840346163937024, 0.027477498516617786, -0.08789691142848738, -0.20884722522681667, 0.36097365321281055, -0.009869454996216866, 0.25984117480970564, 0.10051241104624101, 0.06259418256314737, -0.007574007766587394, -0.0015922608120100838, -0.0009336595822657858, -0.08953710710886212, 0.12480093816716578, 0.1866103831273947, 0.02335236276766019, 0.22006343791172617, -0.39644352634038243, -0.18227421038429298, 0.06809764229914263, 0.13962148088474005, 0.17104574197991973, -0.04817278281053794, -0.2944853176008023, 0.05943382525694601, -0.16353098349645734, -0.19048689900941793, -0.15637496898485725, -0.05449742316268384, -0.010273737675465999, -0.34535076894930433, 0.08877128857143578, -0.03738569424985187, 0.061742779922982056, -0.0460023872665174, -0.1728636105544865, -0.04479338722525253, 0.10336398441521895, 0.023109259847773327, 0.11195727677328424, 0.11695115353823418, -0.1753778114848371, -0.13687517388635093, 0.3826424060478097, -0.09963901554500418, -0.20597407947338764, 0.1847354740303542, -0.1538323000849535, -0.1160206387662107, 0.09767538243461223, 0.18122664666956378, 0.11878619355460009, -0.1547390936740807, 0.06613061663450762, -0.06226242264466626, 0.19581149388104677, 0.06581833791431217, 0.05010141833862733, 0.23250321043389185, 0.1676259961156618, -0.012538396363102255, 0.1310556444073362, -0.07059979541448964, -0.11325108996991601, -0.3033891217921683, -0.08485008032016811, -0.2061138304083475, 0.07201050909324772, -0.08421542154863432, -0.1342584759529148, 0.39687162274938254, 0.13792422565055035, 0.1979913932980881, 0.026766744760763166, 0.2701309323310852, 0.10655872098924149, 0.06496495903647016, 0.0889885949170483, 0.2593568714867745, 0.1679337760522252, 0.05076078449575497, -0.24786283903965903, -0.045679454705012695, 0.047727202819216816] |
707.4163 | Amplitudes in pp and p-pbar scattering | Solutions for the amplitudes that give accurate description of pp and p-pbar
scattering at high energies are investigated, with particular attention given
to the properties of their zeros and slopes, whose determination is required
for the study of the Coulomb interference region. Proper extrapolations of
these quantities to the LHC energies are important for the analysis of the
forthcoming experiments.
| hep-ph | solutions for the amplitudes that give accurate description of pp and ppbar scattering at high energies are investigated with particular attention given to the properties of their zeros and slopes whose determination is required for the study of the coulomb interference region proper extrapolations of these quantities to the lhc energies are important for the analysis of the forthcoming experiments | [['solutions', 'for', 'the', 'amplitudes', 'that', 'give', 'accurate', 'description', 'of', 'pp', 'and', 'ppbar', 'scattering', 'at', 'high', 'energies', 'are', 'investigated', 'with', 'particular', 'attention', 'given', 'to', 'the', 'properties', 'of', 'their', 'zeros', 'and', 'slopes', 'whose', 'determination', 'is', 'required', 'for', 'the', 'study', 'of', 'the', 'coulomb', 'interference', 'region', 'proper', 'extrapolations', 'of', 'these', 'quantities', 'to', 'the', 'lhc', 'energies', 'are', 'important', 'for', 'the', 'analysis', 'of', 'the', 'forthcoming', 'experiments']] | [-0.09900970499341687, 0.13926598162700732, -0.08466295869244883, 0.12507401471375487, -0.02174914302304387, -0.06649558738184472, 0.008341310935793444, 0.3666522992425598, -0.16902793070767075, -0.3112269289481143, 0.06002839599386789, -0.3192732461417715, -0.04034090975377088, 0.2041625163828333, 0.07236483512630608, 0.0998366807277004, 0.12756394238676877, 0.022545806008080642, -0.08805271491874009, -0.2106722917718192, 0.3083225549819569, 0.10868733814762284, 0.25773977700931333, 0.1469701731267075, 0.04612601346646746, 0.046098766297412413, -0.0606711219685773, -0.030869495930771033, -0.17611512135542096, 0.16064849243654558, 0.30201979807267587, 0.04529347086014847, 0.156138114631176, -0.39472907794018586, -0.15575057237098613, 0.13076716413100561, 0.11870807711190233, 0.09074051013837257, -0.02448614394913117, -0.2609268422238529, 0.1313500068616122, -0.09898157332402964, -0.18050504210405052, -0.09476594307925552, 0.06119594022942086, 0.06258558248712992, -0.2912419260867561, 0.06480654934033131, -0.008654070156626403, 0.07489093309268355, -0.06500822667342922, -0.18829555953852833, -0.04334993219623963, 0.10643967889870207, 0.07288444748070712, 0.006974383105989546, 0.10631322267775735, -0.1980330999319752, -0.10345035443703333, 0.39286093950504436, 0.043973022443242374, -0.13992329730341832, 0.2136129340622574, -0.1998026492462183, -0.13080578109559912, 0.17284145016067973, 0.2113471887462462, 0.08830878836258003, -0.1574883579897384, 0.09790313193225302, 0.009891940249751012, 0.0955601696157828, 0.07854560957833503, 0.1076691766444128, 0.18977327160537244, 0.1466325335476237, -0.0028130778732399146, 0.06997812641784548, -0.10616462506974737, -0.07419973514042795, -0.40210365783423185, -0.07051298085304249, -0.11373952849923323, 0.011964425074014191, -0.061088242404609146, -0.14954508753338208, 0.38653305873594945, 0.11988597664361199, 0.25346522245478503, 0.05012184357425819, 0.2703360250103287, 0.1853916981490329, 0.034886257408652456, 0.021289496853326758, 0.3011269710337122, 0.14866992235183715, 0.11019270260973522, -0.2378423140461867, 0.03604830092129608, 0.07275256525414685] |
707.4164 | Any-order propagation of the nonlinear Schroedinger equation | We derive an exact propagation scheme for nonlinear Schroedinger equations.
This scheme is entirely analogous to the propagation of linear Schroedinger
equations. We accomplish this by defining a special operator whose algebraic
properties ensure the correct propagation. As applications, we provide a simple
proof of a recent conjecture regarding higher-order integrators for the
Gross-Pitaevskii equation, extend it to multi-component equations, and to a new
class of integrators.
| quant-ph | we derive an exact propagation scheme for nonlinear schroedinger equations this scheme is entirely analogous to the propagation of linear schroedinger equations we accomplish this by defining a special operator whose algebraic properties ensure the correct propagation as applications we provide a simple proof of a recent conjecture regarding higherorder integrators for the grosspitaevskii equation extend it to multicomponent equations and to a new class of integrators | [['we', 'derive', 'an', 'exact', 'propagation', 'scheme', 'for', 'nonlinear', 'schroedinger', 'equations', 'this', 'scheme', 'is', 'entirely', 'analogous', 'to', 'the', 'propagation', 'of', 'linear', 'schroedinger', 'equations', 'we', 'accomplish', 'this', 'by', 'defining', 'a', 'special', 'operator', 'whose', 'algebraic', 'properties', 'ensure', 'the', 'correct', 'propagation', 'as', 'applications', 'we', 'provide', 'a', 'simple', 'proof', 'of', 'a', 'recent', 'conjecture', 'regarding', 'higherorder', 'integrators', 'for', 'the', 'grosspitaevskii', 'equation', 'extend', 'it', 'to', 'multicomponent', 'equations', 'and', 'to', 'a', 'new', 'class', 'of', 'integrators']] | [-0.14825745927753733, 0.026937685470981177, -0.13318857558961236, 0.0742678770242926, -0.17188994803312999, -0.14678860612825226, -0.027111760443145994, 0.2974973521681864, -0.30351167569395654, -0.2408073768297683, 0.06471710492606594, -0.192221686577619, -0.20196868137303572, 0.20662826047028734, -0.030247072202723418, 0.13341272199776635, 0.06228155973575898, -0.020603807632196276, -0.11974640943304594, -0.23770928583038387, 0.3227419387966172, 0.004807034062583055, 0.2304438837011581, 0.03303413639373299, 0.18493433182697688, -0.0006740256907668576, -0.0050961889826984545, -0.03312150446338399, -0.17631857497478598, 0.12591992639032984, 0.23834323881666608, 0.07602951041798094, 0.29918052328389083, -0.4379179073747859, -0.25201200392555945, 0.07256776526737124, 0.1533806588250532, 0.22332630167478945, -0.038030261146043666, -0.3225435485034736, 0.07163633509024755, -0.16261018403986496, -0.2747142869603834, -0.11679733905301833, -0.001192429672871063, 0.06409650056887028, -0.2623798322043757, 0.07637592557289485, 0.11260068552818761, 0.017489889400330052, -0.0840644327117436, -0.01891376987037096, 0.04445488000316406, 0.018592726022227488, -0.01717370587275989, -0.04179631261877827, -0.018734796000505562, -0.10195010129723754, -0.11674783053571608, 0.41212114162131475, -0.06605529981151001, -0.3194001488276382, 0.12585496586928172, -0.022299666274356335, -0.16040810287596463, 0.11224291259735655, 0.20566969512920105, 0.1787483164790406, -0.1786581465640842, 0.10404556996533092, -0.0707471086921643, 0.11778895006473385, 0.05335024147947778, 0.021316520459671962, 0.08352588224155244, 0.13152339461662654, 0.09303894909376752, 0.1150230725309742, 0.07269981137907772, -0.14244024104563824, -0.36549808079404617, -0.18591999461172398, -0.11959664046819975, 0.11201642081141472, -0.0694393262807054, -0.21625201395754493, 0.4109393070983386, 0.16439901228382517, 0.1319563262261895, 0.11314602956565013, 0.27591758499394603, 0.25423710905675734, 0.010155492218961911, 0.06799660932356075, 0.19761468841235585, 0.24707907950158106, 0.10731599517444622, -0.21914244921349768, -0.015427014934691364, 0.19299138974704183] |
707.4165 | The Opacity of Spiral Galaxy Disks VIII: Structure of the Cold ISM | The quantity of dust in a spiral disk can be estimated using the dust's
typical emission or the extinction of a known source. In this paper, we compare
two techniques, one based on emission and one on absorption, applied on
sections of fourteen disk galaxies. The two measurements reflect, respectively
the average and apparent optical depth of a disk section. Hence, they depend
differently on the average number and optical depth of ISM structures in the
disk. The small scale geometry of the cold ISM is critical for accurate models
of the overall energy budget of spiral disks. ISM geometry, relative
contributions of different stellar populations and dust emissivity are all free
parameters in galaxy Spectral Energy Distribution (SED) models; they are also
sometimes degenerate, depending on wavelength coverage. Our aim is to constrain
typical ISM geometry. The apparent optical depth measurement comes from the
number of distant galaxies seen in HST images through the foreground disk. We
measure the IR flux in images from the {\it Spitzer} Infrared Nearby Galaxy
Survey in the same section of the disk that was covered by HST. A physical
model of the dust is fit to the SED to estimate the dust surface density, mean
temperature, and brightness in these disk sections. The surface density is
subsequently converted into the average optical depth estimate. The two
measurements generally agree. The ratios between the measured average and
apparent optical depths of the disk sections imply optically thin clouds in
these disks. Optically thick disks, are likely to have more than a single cloud
along the line-of-sight.
| astro-ph | the quantity of dust in a spiral disk can be estimated using the dusts typical emission or the extinction of a known source in this paper we compare two techniques one based on emission and one on absorption applied on sections of fourteen disk galaxies the two measurements reflect respectively the average and apparent optical depth of a disk section hence they depend differently on the average number and optical depth of ism structures in the disk the small scale geometry of the cold ism is critical for accurate models of the overall energy budget of spiral disks ism geometry relative contributions of different stellar populations and dust emissivity are all free parameters in galaxy spectral energy distribution sed models they are also sometimes degenerate depending on wavelength coverage our aim is to constrain typical ism geometry the apparent optical depth measurement comes from the number of distant galaxies seen in hst images through the foreground disk we measure the ir flux in images from the it spitzer infrared nearby galaxy survey in the same section of the disk that was covered by hst a physical model of the dust is fit to the sed to estimate the dust surface density mean temperature and brightness in these disk sections the surface density is subsequently converted into the average optical depth estimate the two measurements generally agree the ratios between the measured average and apparent optical depths of the disk sections imply optically thin clouds in these disks optically thick disks are likely to have more than a single cloud along the lineofsight | [['the', 'quantity', 'of', 'dust', 'in', 'a', 'spiral', 'disk', 'can', 'be', 'estimated', 'using', 'the', 'dusts', 'typical', 'emission', 'or', 'the', 'extinction', 'of', 'a', 'known', 'source', 'in', 'this', 'paper', 'we', 'compare', 'two', 'techniques', 'one', 'based', 'on', 'emission', 'and', 'one', 'on', 'absorption', 'applied', 'on', 'sections', 'of', 'fourteen', 'disk', 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707.4166 | Parsimony Principles for Software Components and Metalanguages | Software is a communication system. The usual topic of communication is
program behavior, as encoded by programs. Domain-specific libraries are
codebooks, domain-specific languages are coding schemes, and so forth. To turn
metaphor into method, we adapt toolsfrom information theory--the study of
efficient communication--to probe the efficiency with which languages and
libraries let us communicate programs. In previous work we developed an
information-theoretic analysis of software reuse in problem domains. This new
paper uses information theory to analyze tradeoffs in the design of components,
generators, and metalanguages. We seek answers to two questions: (1) How can we
judge whether a component is over- or under-generalized? Drawing on minimum
description length principles, we propose that the best component yields the
most succinct representation of the use cases. (2) If we view a programming
language as an assemblage of metalanguages, each providing a complementary
style of abstraction, how can these metalanguages aid or hinder us in
efficiently describing software? We describe a complex triangle of interactions
between the power of an abstraction mechanism, the amount of reuse it enables,
and the cognitive difficulty of its use.
| cs.SE | software is a communication system the usual topic of communication is program behavior as encoded by programs domainspecific libraries are codebooks domainspecific languages are coding schemes and so forth to turn metaphor into method we adapt toolsfrom information theorythe study of efficient communicationto probe the efficiency with which languages and libraries let us communicate programs in previous work we developed an informationtheoretic analysis of software reuse in problem domains this new paper uses information theory to analyze tradeoffs in the design of components generators and metalanguages we seek answers to two questions 1 how can we judge whether a component is over or undergeneralized drawing on minimum description length principles we propose that the best component yields the most succinct representation of the use cases 2 if we view a programming language as an assemblage of metalanguages each providing a complementary style of abstraction how can these metalanguages aid or hinder us in efficiently describing software we describe a complex triangle of interactions between the power of an abstraction mechanism the amount of reuse it enables and the cognitive difficulty of its use | [['software', 'is', 'a', 'communication', 'system', 'the', 'usual', 'topic', 'of', 'communication', 'is', 'program', 'behavior', 'as', 'encoded', 'by', 'programs', 'domainspecific', 'libraries', 'are', 'codebooks', 'domainspecific', 'languages', 'are', 'coding', 'schemes', 'and', 'so', 'forth', 'to', 'turn', 'metaphor', 'into', 'method', 'we', 'adapt', 'toolsfrom', 'information', 'theorythe', 'study', 'of', 'efficient', 'communicationto', 'probe', 'the', 'efficiency', 'with', 'which', 'languages', 'and', 'libraries', 'let', 'us', 'communicate', 'programs', 'in', 'previous', 'work', 'we', 'developed', 'an', 'informationtheoretic', 'analysis', 'of', 'software', 'reuse', 'in', 'problem', 'domains', 'this', 'new', 'paper', 'uses', 'information', 'theory', 'to', 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707.4167 | Gaps in the cloud cover? Comparing extinction measures in spiral disks | Dust in galaxies can be mapped by either the FIR/sub-mm emission, the optical
or infrared reddening of starlight, or the extinction of a known background
source. We compare two dust extinction measurements for a set of fifteen
sections in thirteen nearby galaxies, to determine the scale of the dusty ISM
responsible for disk opacity: one using stellar reddening and the other a known
background source. In our earlier papers, we presented extinction measurements
of 29 galaxies, based on calibrated counts of distant background objects
identified though foreground disks in HST/WFPC2 images. For the 13 galaxies
that overlap with the Spitzer Infrared Nearby Galaxies Survey (SINGS), we now
compare these results with those obtained from an I-L color map. Our goal is to
determine whether or not a detected distant galaxy indicates a gap in the dusty
ISM, and hence to better understand the nature and geometry of the disk
extinction.
We find that distant galaxies are predominantly in low-extinction sections
marked by the color maps, indicating that their number depends both on the
cloud cover of {\it Spitzer}-resolved dust structures --mostly the spiral
arms--and a diffuse, unresolved underlying disk. We note that our infrared
color map (E[I-L]) underestimates the overall dust presence in these disks
severely, because it implicitly assumes the presence of a dust screen in front
of the stellar distribution.
| astro-ph | dust in galaxies can be mapped by either the firsubmm emission the optical or infrared reddening of starlight or the extinction of a known background source we compare two dust extinction measurements for a set of fifteen sections in thirteen nearby galaxies to determine the scale of the dusty ism responsible for disk opacity one using stellar reddening and the other a known background source in our earlier papers we presented extinction measurements of 29 galaxies based on calibrated counts of distant background objects identified though foreground disks in hstwfpc2 images for the 13 galaxies that overlap with the spitzer infrared nearby galaxies survey sings we now compare these results with those obtained from an il color map our goal is to determine whether or not a detected distant galaxy indicates a gap in the dusty ism and hence to better understand the nature and geometry of the disk extinction we find that distant galaxies are predominantly in lowextinction sections marked by the color maps indicating that their number depends both on the cloud cover of it spitzerresolved dust structures mostly the spiral armsand a diffuse unresolved underlying disk we note that our infrared color map eil underestimates the overall dust presence in these disks severely because it implicitly assumes the presence of a dust screen in front of the stellar distribution | [['dust', 'in', 'galaxies', 'can', 'be', 'mapped', 'by', 'either', 'the', 'firsubmm', 'emission', 'the', 'optical', 'or', 'infrared', 'reddening', 'of', 'starlight', 'or', 'the', 'extinction', 'of', 'a', 'known', 'background', 'source', 'we', 'compare', 'two', 'dust', 'extinction', 'measurements', 'for', 'a', 'set', 'of', 'fifteen', 'sections', 'in', 'thirteen', 'nearby', 'galaxies', 'to', 'determine', 'the', 'scale', 'of', 'the', 'dusty', 'ism', 'responsible', 'for', 'disk', 'opacity', 'one', 'using', 'stellar', 'reddening', 'and', 'the', 'other', 'a', 'known', 'background', 'source', 'in', 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707.4168 | The $qqqq\bar{q}$ components and the magnetic moments of the charmed and
the bottomed baryons | We give the explicit wave functions of the $qqqq\bar{q}$ components of the
C=+1, J=1/2 charmed baryons, $\Sigma_{c}$, $\Lambda_{c}$ and $\Xi_{c}^{a}$, and
calculate the magnetic moments by adding the 5q components contributions, and
we also compute the magnetic moments of the $\Sigma_{b}$ and $\Sigma_{b}^{*}$
baryons. The influence of the additional light and strange $q\bar{q}$ pairs is
investigated. It's obvious that the constituent quark masses of the charm and
beauty quarks are much heavier than that of the light and strange quarks,
consequently, the hidden flavor contributions to the baryons magnetic moments
may be significant. What is interesting is that the inclusion of the
$qqqq\bar{q}$ components contributions leads to different $\Lambda^{+}_{c}$,
$\Xi^{a+}_{c}$ and $\Xi^{a0}_{c}$ magnetic moments, all of which are predicted
to be the same value $0.38\mu_{N}$ on the basis of the classical qqq quark
model. And it's shown that the differences of these magnetic moments are
independent of the constituent mass of the charm quark.
| hep-ph | we give the explicit wave functions of the qqqqbarq components of the c1 j12 charmed baryons sigma_c lambda_c and xi_ca and calculate the magnetic moments by adding the 5q components contributions and we also compute the magnetic moments of the sigma_b and sigma_b baryons the influence of the additional light and strange qbarq pairs is investigated its obvious that the constituent quark masses of the charm and beauty quarks are much heavier than that of the light and strange quarks consequently the hidden flavor contributions to the baryons magnetic moments may be significant what is interesting is that the inclusion of the qqqqbarq components contributions leads to different lambda_c xia_c and xia0_c magnetic moments all of which are predicted to be the same value 038mu_n on the basis of the classical qqq quark model and its shown that the differences of these magnetic moments are independent of the constituent mass of the charm quark | [['we', 'give', 'the', 'explicit', 'wave', 'functions', 'of', 'the', 'qqqqbarq', 'components', 'of', 'the', 'c1', 'j12', 'charmed', 'baryons', 'sigma_c', 'lambda_c', 'and', 'xi_ca', 'and', 'calculate', 'the', 'magnetic', 'moments', 'by', 'adding', 'the', '5q', 'components', 'contributions', 'and', 'we', 'also', 'compute', 'the', 'magnetic', 'moments', 'of', 'the', 'sigma_b', 'and', 'sigma_b', 'baryons', 'the', 'influence', 'of', 'the', 'additional', 'light', 'and', 'strange', 'qbarq', 'pairs', 'is', 'investigated', 'its', 'obvious', 'that', 'the', 'constituent', 'quark', 'masses', 'of', 'the', 'charm', 'and', 'beauty', 'quarks', 'are', 'much', 'heavier', 'than', 'that', 'of', 'the', 'light', 'and', 'strange', 'quarks', 'consequently', 'the', 'hidden', 'flavor', 'contributions', 'to', 'the', 'baryons', 'magnetic', 'moments', 'may', 'be', 'significant', 'what', 'is', 'interesting', 'is', 'that', 'the', 'inclusion', 'of', 'the', 'qqqqbarq', 'components', 'contributions', 'leads', 'to', 'different', 'lambda_c', 'xia_c', 'and', 'xia0_c', 'magnetic', 'moments', 'all', 'of', 'which', 'are', 'predicted', 'to', 'be', 'the', 'same', 'value', '038mu_n', 'on', 'the', 'basis', 'of', 'the', 'classical', 'qqq', 'quark', 'model', 'and', 'its', 'shown', 'that', 'the', 'differences', 'of', 'these', 'magnetic', 'moments', 'are', 'independent', 'of', 'the', 'constituent', 'mass', 'of', 'the', 'charm', 'quark']] | [-0.08745552226513004, 0.29304608760401607, -0.07913737164189417, 0.15745593591826038, -0.05894396250136197, -0.05249166779840986, 0.061252123403828594, 0.3034977692862352, -0.1966819878667593, -0.2549128897488117, -0.03983588193465645, -0.3565822622242073, 0.010931208563658099, 0.07415857773739845, 0.11510629589979847, 0.03823905006594335, 0.017731473489354055, 0.05637841184002658, -0.06134509827941656, -0.2373274070645372, 0.3509350910348197, -0.06816019140183925, 0.19268232870226104, 0.16849950122336546, 0.03257414711163922, -0.05102699368881682, -0.015583631163462997, -0.049834300740621985, -0.05903261860619144, 0.10403748029532532, 0.113650013305014, 0.05125091412293841, 0.12038335512392223, -0.3791281850636005, -0.1067141932543988, 0.12491578568393985, 0.16200537691824138, 0.11952804358908907, -0.006335116448656967, -0.3082213370098422, 0.1334563950332813, -0.147881473271021, -0.17651748461338382, -0.1441797194009026, 0.051487375975896914, 0.03279832627624273, -0.3089777359366417, 0.10207063018790602, 0.03438906168875595, 0.00923739952966571, -0.04080966460673759, -0.29743398557339484, -0.1176482315780595, 0.08763308280458053, 0.16053521249404487, 0.10755765724927187, 0.1470436663646251, -0.18737849066383205, -0.10719437723979354, 0.42286144198849795, -0.03236494133142211, -0.1930492768312494, 0.11779797949517766, -0.17742087346346427, -0.10570059727722159, 0.087266739133435, 0.2003604311402887, 0.07561538176669273, -0.16615858916193246, 0.06636192359922764, -0.05453153453757598, 0.17587079398334027, 0.06338812053514023, 0.10910013066604733, 0.24922926533346376, 0.11421691824371616, -0.04286499883334424, 0.08108829003913949, -0.06295348220970481, -0.08725577551561098, -0.3267969801276922, -0.1466873510181904, -0.13224207914667205, 0.03018303571608461, -0.11030322666813541, -0.12929136141261552, 0.44520552271356184, 0.09913074152427725, 0.22651416602699706, -0.03214549801700438, 0.3267557953701665, 0.11363578350593646, 0.07837579350297649, 0.10765301354695112, 0.3018643384737273, 0.26136181318666785, 0.10129524187883363, -0.30526395517090954, 0.03243417443707585, 0.03719483272482951] |
707.4169 | Typicality Defended | Hartle and Srednicki have argued that there is no observational evidence
favoring our typicality. Here it is shown that such evidence does arise from
including the `normalization principle' requirement that the sum of the
likelihoods for all possible observations is normalized to unity in each
theory.
| hep-th | hartle and srednicki have argued that there is no observational evidence favoring our typicality here it is shown that such evidence does arise from including the normalization principle requirement that the sum of the likelihoods for all possible observations is normalized to unity in each theory | [['hartle', 'and', 'srednicki', 'have', 'argued', 'that', 'there', 'is', 'no', 'observational', 'evidence', 'favoring', 'our', 'typicality', 'here', 'it', 'is', 'shown', 'that', 'such', 'evidence', 'does', 'arise', 'from', 'including', 'the', 'normalization', 'principle', 'requirement', 'that', 'the', 'sum', 'of', 'the', 'likelihoods', 'for', 'all', 'possible', 'observations', 'is', 'normalized', 'to', 'unity', 'in', 'each', 'theory']] | [-0.10012552246157809, 0.10698485947416528, -0.14321772189324963, 0.10997087242962468, -0.09260575160505655, -0.1191601702214583, 0.037099123251644654, 0.35750611737856397, -0.21122565063769402, -0.26761237726263376, 0.08188474256008782, -0.2912270017474404, -0.17767668894046676, 0.18476959977946852, -0.04013297951820752, 0.00841905786048459, 0.05918183546189381, 0.043186706004907253, -0.032864872716701306, -0.22105281792186282, 0.30612283349847014, 0.045378718368263675, 0.3061383961429111, 0.08832385379861554, 0.09655475350218298, -0.024525727934973394, -0.05223183966818792, 0.0491801043972373, -0.13000514989692855, 0.02324823446004935, 0.2495901527531121, 0.2531709011806094, 0.27018608610429196, -0.36335820860593865, -0.24202312571603968, 0.16705454669325895, 0.12898669867654858, 0.11494094080737104, -0.062080685099910785, -0.19244230255160644, 0.11459587111249162, -0.16981389705577624, -0.09816758808396432, -0.08333301669209385, 0.05641136383232863, -0.040474596726910575, -0.2887649789007138, 0.0935823802795747, 0.12032031736579603, -0.002901261247208585, -0.05563955460978753, -0.14247884769397584, -0.037849009558356, 0.07255661667770018, 0.13482084186524962, 0.050471043325555714, 0.04823087572889483, -0.09937757164563822, -0.11354260893700563, 0.38919293151601503, -0.01606958817042734, -0.15955889743307364, 0.19694656757232937, -0.15009138502595623, -0.2110886453833107, 0.0962946236781452, -0.025025177706518898, 0.044034481914106596, -0.09584962844889125, 0.07100989468998033, -0.09175925219998411, 0.18725502976904745, 0.049443534577933504, 0.040057027568210564, 0.2571318691758358, 0.06354841531213859, 0.040724197934057724, 0.04398410125514087, -0.07034872135187945, -0.1214813255393655, -0.36506296726672544, -0.13348375572620527, -0.2227379458819759, 0.09239257052135856, -0.06278869288223138, -0.1439177172692523, 0.2504638345993083, 0.20251106723900075, 0.16818598879541716, 0.0708101628166016, 0.2559647783232124, 0.1498485775892218, 0.1374716416568212, 0.07300140543678857, 0.31625119696431997, 0.1180632523584949, 0.007595086288031029, -0.16575871827587, 0.11795990131592946, -0.006695988810742679] |
707.417 | The Cosmic Neutrino Background and the Age of the Universe | We discuss the cosmological degeneracy between the age of the Universe, the
Hubble parameter and the effective number of relativistic particles N_eff. We
show that independent determinations of the Hubble parameter H(z) as those
recently provided by Simon,Verde, Jimenez (2006), combined with other
cosmological data sets can provide the most stringent constraint on N_eff,
yielding N_eff=3.7 (-1.2) (+1.1) at 95% confidence level. A neutrino background
is detected with high significance: N_eff >1.8 at better than 99% confidence
level. Constraints on the age of the universe in the framework of an extra
background of relativistic particles are improved by a factor 3.
| astro-ph hep-ph | we discuss the cosmological degeneracy between the age of the universe the hubble parameter and the effective number of relativistic particles n_eff we show that independent determinations of the hubble parameter hz as those recently provided by simonverde jimenez 2006 combined with other cosmological data sets can provide the most stringent constraint on n_eff yielding n_eff37 12 11 at 95 confidence level a neutrino background is detected with high significance n_eff 18 at better than 99 confidence level constraints on the age of the universe in the framework of an extra background of relativistic particles are improved by a factor 3 | [['we', 'discuss', 'the', 'cosmological', 'degeneracy', 'between', 'the', 'age', 'of', 'the', 'universe', 'the', 'hubble', 'parameter', 'and', 'the', 'effective', 'number', 'of', 'relativistic', 'particles', 'n_eff', 'we', 'show', 'that', 'independent', 'determinations', 'of', 'the', 'hubble', 'parameter', 'hz', 'as', 'those', 'recently', 'provided', 'by', 'simonverde', 'jimenez', '2006', 'combined', 'with', 'other', 'cosmological', 'data', 'sets', 'can', 'provide', 'the', 'most', 'stringent', 'constraint', 'on', 'n_eff', 'yielding', 'n_eff37', '12', '11', 'at', '95', 'confidence', 'level', 'a', 'neutrino', 'background', 'is', 'detected', 'with', 'high', 'significance', 'n_eff', '18', 'at', 'better', 'than', '99', 'confidence', 'level', 'constraints', 'on', 'the', 'age', 'of', 'the', 'universe', 'in', 'the', 'framework', 'of', 'an', 'extra', 'background', 'of', 'relativistic', 'particles', 'are', 'improved', 'by', 'a', 'factor', '3']] | [-0.10599331893591267, 0.18781276886493103, -0.030574684661596713, 0.10107179488069519, -0.06812873303965487, -0.12363584634537499, 0.08407335147035844, 0.28005518591163137, -0.12571017762806003, -0.4406217735665239, 0.05229332896932545, -0.29489858255185414, 0.03688122168409102, 0.2108808650230669, 0.005791119920710723, -0.000380585210002733, 0.05897609598351398, 0.035457725822749184, -0.032305057299313975, -0.31403125573250684, 0.2832576982733427, 0.17484849218203866, 0.1984616529074206, 0.007703321382657371, 0.12158726296984976, -0.07161518202264408, -0.08779730998694596, 0.007443228172081889, -0.1824238294235935, 0.08704130194441538, 0.1705408398852204, 0.1683984155283219, 0.21512862720122242, -0.35465855123192974, -0.22595131858675319, 0.09847266545914339, 0.15123732034540313, 0.09298292612492323, -0.006967765375539058, -0.31067959866439454, 0.02304188200187954, -0.1652054229487825, -0.1144850524283494, 0.015641312881589237, -0.009479459807878792, -0.07299167613117871, -0.2688333838989939, 0.193440771363899, -0.06426104402752837, 0.048541321988321014, -0.07706206854235267, -0.19505669533115144, -0.03906848855467156, 0.014642754593167943, 0.057895325658127966, 0.054999730924280794, 0.12277607518516367, -0.13326924707213736, -0.08136696100818237, 0.38688426555106137, -0.13401339778919455, -0.1376594158566811, 0.15517047747518076, -0.20713563832557863, -0.19025020987604452, 0.11678997982726103, 0.14013725436396068, 0.02938168067391021, -0.16691388685557276, 0.13206063179861321, 0.021307240005093393, 0.22115121668938434, 0.08957541974336662, 0.03271912975763582, 0.2587459431114522, 0.1665340479312822, 0.07176715968120279, -0.013383475277511723, -0.15982122599344814, 0.017577729220831333, -0.32530621497778955, -0.08073516567225916, -0.12615979443106687, 0.05305667414395797, -0.2433582133085248, -0.07720218289812858, 0.35036617750301957, 0.17081212588689393, 0.22078010593446892, 0.06846971153234592, 0.25967557674668956, 0.10111219552463165, -0.0008169042859038319, 0.07207400819775883, 0.3420092872052331, 0.09974108184828903, 0.01909842122477865, -0.1679609122055799, 0.005328244891845518, 0.0048012763092463665] |
707.4171 | Coulomb interaction, ripples, and the minimal conductivity of graphene | We argue that the unscreened Coulomb interaction in graphene provides a
positive, universal, and logarithmic correction to scaling of zero-temperature
conductivity with frequency. The combined effect of the disorder due to
wrinkling of the graphene sheet and the long range electron-electron
interactions is a finite positive contribution to the dc conductivity. This
contribution is disorder strength dependent and thus non-universal. The
low-energy behavior of such a system is governed by the line of fixed points at
which both the interaction and disorder are finite, and the density of states
is exactly linear. An estimate of the typical random vector potential
representing ripples in graphene brings the theoretical value of the minimal
conductivity into the vicinity of 4e^2/h.
| cond-mat.mes-hall cond-mat.str-el | we argue that the unscreened coulomb interaction in graphene provides a positive universal and logarithmic correction to scaling of zerotemperature conductivity with frequency the combined effect of the disorder due to wrinkling of the graphene sheet and the long range electronelectron interactions is a finite positive contribution to the dc conductivity this contribution is disorder strength dependent and thus nonuniversal the lowenergy behavior of such a system is governed by the line of fixed points at which both the interaction and disorder are finite and the density of states is exactly linear an estimate of the typical random vector potential representing ripples in graphene brings the theoretical value of the minimal conductivity into the vicinity of 4e2h | [['we', 'argue', 'that', 'the', 'unscreened', 'coulomb', 'interaction', 'in', 'graphene', 'provides', 'a', 'positive', 'universal', 'and', 'logarithmic', 'correction', 'to', 'scaling', 'of', 'zerotemperature', 'conductivity', 'with', 'frequency', 'the', 'combined', 'effect', 'of', 'the', 'disorder', 'due', 'to', 'wrinkling', 'of', 'the', 'graphene', 'sheet', 'and', 'the', 'long', 'range', 'electronelectron', 'interactions', 'is', 'a', 'finite', 'positive', 'contribution', 'to', 'the', 'dc', 'conductivity', 'this', 'contribution', 'is', 'disorder', 'strength', 'dependent', 'and', 'thus', 'nonuniversal', 'the', 'lowenergy', 'behavior', 'of', 'such', 'a', 'system', 'is', 'governed', 'by', 'the', 'line', 'of', 'fixed', 'points', 'at', 'which', 'both', 'the', 'interaction', 'and', 'disorder', 'are', 'finite', 'and', 'the', 'density', 'of', 'states', 'is', 'exactly', 'linear', 'an', 'estimate', 'of', 'the', 'typical', 'random', 'vector', 'potential', 'representing', 'ripples', 'in', 'graphene', 'brings', 'the', 'theoretical', 'value', 'of', 'the', 'minimal', 'conductivity', 'into', 'the', 'vicinity', 'of', '4e2h']] | [-0.18839062777403584, 0.18454276613851822, -0.05520028617028067, 0.014539815480502434, -0.021768084729217693, -0.14002204711477345, 0.06172100944632593, 0.3145625739215085, -0.2855870997469522, -0.24322092878576526, 0.0033508218231841796, -0.3426127733471684, -0.14802218567128253, 0.14108246157709986, 0.03408569470445952, 0.033730295683758765, -0.04182818196873125, 0.003437219687108683, -0.05471369664335989, -0.20747973272799808, 0.3217569744357696, 0.04140791609787788, 0.3027223869202993, 0.17670865393538251, 0.04664418094942712, 0.02366236822369198, 0.05587943067025934, 0.06778563262146507, -0.10326441044902526, 0.05570671930819607, 0.19449938258203942, -0.09652478325889151, 0.25242335357281387, -0.40201442058269793, -0.19514933886786556, 0.05223415752586264, 0.12597095700673377, 0.15253464774821654, -0.016872678588852923, -0.24785480146797803, 0.07120968488594279, -0.14041670102180323, -0.1512430404456189, -0.031086395136438884, 0.060475496073754936, 0.00033548775797662063, -0.27929709800001645, 0.11668924538967893, 0.06324637561447473, 0.061357489572121546, -0.09591924254663098, -0.10729996444016664, -0.05137092013978678, 0.12119420035493472, 0.0815211317430322, 0.03523911526386873, 0.18054176134387684, -0.16929552031672981, -0.04650038655879151, 0.3841192212401547, -0.09605160231988591, -0.15324094500313076, 0.16350134761812976, -0.17513306560114217, -0.03088744097930562, 0.17176628719346645, 0.12924614768180773, 0.047777350422822766, -0.13108004212805316, 0.13626671903597543, 0.007380404146427973, 0.14170959522215348, 0.0086468974661687, 0.05117176260210128, 0.2298542256347644, 0.17661074534631693, 0.06134241922862, 0.1480985084363522, -0.09806230367344414, -0.06579535993604133, -0.30734508043616754, -0.10839926117919704, -0.23217292541526577, 0.08998465110571721, -0.1308585194930281, -0.25463351664634853, 0.42732901337410273, 0.15436598838060203, 0.22252822633331212, 0.04609914199731703, 0.24687282752810827, 0.1880073606257494, 0.07400245506825864, 0.018751072054569665, 0.24938343207622504, 0.1605459358005856, 0.07458136809400769, -0.3078415029260338, 0.05065949363076789, 0.02235787016594321] |
707.4172 | Pairing states of a polarized Fermi gas trapped in a one-dimensional
optical lattice | We study the properties of a one-dimensional (1D) gas of fermions trapped in
a lattice by means of the density matrix renormalization group method, focusing
on the case of unequal spin populations, and strong attractive interaction. In
the low density regime, the system phase-separates into a well defined
superconducting core and a fully polarized metallic cloud surrounding it. We
argue that the superconducting phase corresponds to a 1D analogue of the
Fulde-Ferrell-Larkin-Ovchinnikov (FFLO) state, with a quasi-condensate of
tightly bound bosonic pairs with a finite center-of-mass momentum that scales
linearly with the magnetization. In the large density limit, the system allows
for four phases: in the core, we either find a Fock state of localized pairs or
a metallic shell with free spin-down fermions moving in a fully filled
background of spin-up fermions. As the magnetization increases, the Fock state
disappears to give room for a metallic phase, with a partially polarized
superconducting FFLO shell and a fully polarized metallic cloud surrounding the
core.
| cond-mat.str-el cond-mat.supr-con | we study the properties of a onedimensional 1d gas of fermions trapped in a lattice by means of the density matrix renormalization group method focusing on the case of unequal spin populations and strong attractive interaction in the low density regime the system phaseseparates into a well defined superconducting core and a fully polarized metallic cloud surrounding it we argue that the superconducting phase corresponds to a 1d analogue of the fuldeferrelllarkinovchinnikov fflo state with a quasicondensate of tightly bound bosonic pairs with a finite centerofmass momentum that scales linearly with the magnetization in the large density limit the system allows for four phases in the core we either find a fock state of localized pairs or a metallic shell with free spindown fermions moving in a fully filled background of spinup fermions as the magnetization increases the fock state disappears to give room for a metallic phase with a partially polarized superconducting fflo shell and a fully polarized metallic cloud surrounding the core | [['we', 'study', 'the', 'properties', 'of', 'a', 'onedimensional', '1d', 'gas', 'of', 'fermions', 'trapped', 'in', 'a', 'lattice', 'by', 'means', 'of', 'the', 'density', 'matrix', 'renormalization', 'group', 'method', 'focusing', 'on', 'the', 'case', 'of', 'unequal', 'spin', 'populations', 'and', 'strong', 'attractive', 'interaction', 'in', 'the', 'low', 'density', 'regime', 'the', 'system', 'phaseseparates', 'into', 'a', 'well', 'defined', 'superconducting', 'core', 'and', 'a', 'fully', 'polarized', 'metallic', 'cloud', 'surrounding', 'it', 'we', 'argue', 'that', 'the', 'superconducting', 'phase', 'corresponds', 'to', 'a', '1d', 'analogue', 'of', 'the', 'fuldeferrelllarkinovchinnikov', 'fflo', 'state', 'with', 'a', 'quasicondensate', 'of', 'tightly', 'bound', 'bosonic', 'pairs', 'with', 'a', 'finite', 'centerofmass', 'momentum', 'that', 'scales', 'linearly', 'with', 'the', 'magnetization', 'in', 'the', 'large', 'density', 'limit', 'the', 'system', 'allows', 'for', 'four', 'phases', 'in', 'the', 'core', 'we', 'either', 'find', 'a', 'fock', 'state', 'of', 'localized', 'pairs', 'or', 'a', 'metallic', 'shell', 'with', 'free', 'spindown', 'fermions', 'moving', 'in', 'a', 'fully', 'filled', 'background', 'of', 'spinup', 'fermions', 'as', 'the', 'magnetization', 'increases', 'the', 'fock', 'state', 'disappears', 'to', 'give', 'room', 'for', 'a', 'metallic', 'phase', 'with', 'a', 'partially', 'polarized', 'superconducting', 'fflo', 'shell', 'and', 'a', 'fully', 'polarized', 'metallic', 'cloud', 'surrounding', 'the', 'core']] | [-0.19699316260262206, 0.2790383971693767, -0.0648981884956678, 0.023836585917373802, 3.003036154706667e-05, -0.14366770952531113, 0.08215790163642563, 0.362873441198977, -0.21401287693240703, -0.23079995041224743, 0.014268409648893128, -0.29512589129702, -0.020425647768339644, 0.11512266541121347, 0.07557929734480795, 0.00490983157995776, 0.015849700399529668, -0.007444256475115786, -0.13646735111535413, -0.20800425921901833, 0.3548046841808572, -0.014738685494038934, 0.3117012178650262, 0.05323201731392523, 0.07802470469075005, -0.0002732587887383089, 0.1069336519945731, 0.01788989251490864, -0.07839115339137186, 0.05333034877052031, 0.21897653991494204, -0.057818785588052576, 0.19762465094284312, -0.46037399689326197, -0.2129938044874906, 0.05800658665745088, 0.1667812838894883, 0.1565353091104842, -0.05135205594848319, -0.3176364458674315, -0.016530187445601856, -0.2451301045295578, -0.20099291997314317, -0.04250880029256933, -0.0012976730401377853, -0.010381544075576907, -0.21317579513046572, 0.1034181783800638, 0.06149735649772238, 0.023887783311670872, -0.09535242002152144, -0.07227081941048864, -0.06973768266275661, 0.02374474842118372, -0.017433491558199975, 0.060922846591338606, 0.11693621591221905, -0.16581833632322165, -0.04658747297745743, 0.34773917964989004, -0.10230053812561314, -0.14182936446031374, 0.20124206181456586, -0.19173583910360764, -0.04166791028227436, 0.1755681801956465, 0.12167740908803464, 0.08557449141517282, -0.09376113451612693, 0.07585610153502075, -0.06859860398803792, 0.20282017172540667, 0.0016093626646779295, 0.06656427551401643, 0.3007177740630762, 0.21541367279274798, 0.07061317771184826, 0.19511773708708038, -0.12396787824648682, -0.10073298161633586, -0.26053853087814344, -0.17411410020239845, -0.21678877976245997, 0.04500544716237772, -0.03325661663265925, -0.2252842884385822, 0.37625340106840266, 0.07075403420032406, 0.21642661232944216, -0.0412947983117547, 0.28666102068453303, 0.10386335225023398, 0.0454403651103082, 0.09895705245044821, 0.21378106920605117, 0.20471461616859704, 0.07838348201447644, -0.29727379141216415, -0.021648822454508485, 0.04112194988325738] |
707.4173 | A Wide-field Survey of Two Z~0.5 Galaxy Clusters: Identifying the
Physical Processes Responsible for the Observed Transformation of Spirals
into S0s | We present new results from our comprehensive comparative survey of two
massive, intermediate redshift galaxy clusters, Cl0024+17 (z=0.39) and
MS0451-03 (z=0.54). We identify and study several key classes of `transition
objects' whose stellar populations or dynamical states indicate a recent or
ongoing change in morphology and star formation rate. For the first time, we
have been able to conclusively identify spiral galaxies in the process of
transforming into S0 galaxies. This has been accomplished by locating both
spirals whose star formation is being quenched as well as their eventual
successors, the recently created S0s. Differences between the two clusters in
both the timescales and spatial location of this conversion process allow us to
evaluate the relative importance of several proposed physical mechanisms that
could be responsible for the transformation. Combined with other diagnostics
that are sensitive to either ICM-driven galaxy evolution or galaxy-galaxy
interactions, we describe a self-consistent picture of galaxy evolution in
clusters. We find that spiral galaxies within infalling groups have already
begun a slow process of conversion into S0s primarily via gentle galaxy-galaxy
interactions. The fates of spirals upon reaching the core of the cluster depend
heavily on the cluster ICM, with rapid conversion of all remaining spirals into
S0s via ram-pressure stripping in clusters where the ICM is dense. In the
presence of a less-dense ICM, the conversion continues at a slower pace, with
galaxy-galaxy interactions continuing to play a role along with `starvation' by
the ICM. We conclude that the buildup of the local S0 population through the
transformation of spiral galaxies is a heterogeneous process that nevertheless
proceeds robustly across a variety of different environments.
| astro-ph | we present new results from our comprehensive comparative survey of two massive intermediate redshift galaxy clusters cl002417 z039 and ms045103 z054 we identify and study several key classes of transition objects whose stellar populations or dynamical states indicate a recent or ongoing change in morphology and star formation rate for the first time we have been able to conclusively identify spiral galaxies in the process of transforming into s0 galaxies this has been accomplished by locating both spirals whose star formation is being quenched as well as their eventual successors the recently created s0s differences between the two clusters in both the timescales and spatial location of this conversion process allow us to evaluate the relative importance of several proposed physical mechanisms that could be responsible for the transformation combined with other diagnostics that are sensitive to either icmdriven galaxy evolution or galaxygalaxy interactions we describe a selfconsistent picture of galaxy evolution in clusters we find that spiral galaxies within infalling groups have already begun a slow process of conversion into s0s primarily via gentle galaxygalaxy interactions the fates of spirals upon reaching the core of the cluster depend heavily on the cluster icm with rapid conversion of all remaining spirals into s0s via rampressure stripping in clusters where the icm is dense in the presence of a lessdense icm the conversion continues at a slower pace with galaxygalaxy interactions continuing to play a role along with starvation by the icm we conclude that the buildup of the local s0 population through the transformation of spiral galaxies is a heterogeneous process that nevertheless proceeds robustly across a variety of different environments | [['we', 'present', 'new', 'results', 'from', 'our', 'comprehensive', 'comparative', 'survey', 'of', 'two', 'massive', 'intermediate', 'redshift', 'galaxy', 'clusters', 'cl002417', 'z039', 'and', 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707.4174 | Retinoblastoma protein is the likely common effector for distinct
anti-aging pathways | The multiple worlds of genetically manipulated laboratory organisms such as
transgenic mice or worms with certain gene mutations are somewhat reminiscent
of parallel worlds in quantum mechanics. So are various models of aging tested
in such organisms. In this context, the tumor suppressor p53 has been found to
either accelerate or delay aging, the latter, for instance, in conjunction with
ARF, another tumor suppressor, as shown very recently. To more easily determine
which of these artificial settings comes closest to real life, I discuss here
their features in the light of my protein structure-based insights that have
led me to propose a physiological anti-aging role for the retinoblastoma tumor
suppressor protein (RB) over the past four years.
| q-bio.SC q-bio.BM | the multiple worlds of genetically manipulated laboratory organisms such as transgenic mice or worms with certain gene mutations are somewhat reminiscent of parallel worlds in quantum mechanics so are various models of aging tested in such organisms in this context the tumor suppressor p53 has been found to either accelerate or delay aging the latter for instance in conjunction with arf another tumor suppressor as shown very recently to more easily determine which of these artificial settings comes closest to real life i discuss here their features in the light of my protein structurebased insights that have led me to propose a physiological antiaging role for the retinoblastoma tumor suppressor protein rb over the past four years | [['the', 'multiple', 'worlds', 'of', 'genetically', 'manipulated', 'laboratory', 'organisms', 'such', 'as', 'transgenic', 'mice', 'or', 'worms', 'with', 'certain', 'gene', 'mutations', 'are', 'somewhat', 'reminiscent', 'of', 'parallel', 'worlds', 'in', 'quantum', 'mechanics', 'so', 'are', 'various', 'models', 'of', 'aging', 'tested', 'in', 'such', 'organisms', 'in', 'this', 'context', 'the', 'tumor', 'suppressor', 'p53', 'has', 'been', 'found', 'to', 'either', 'accelerate', 'or', 'delay', 'aging', 'the', 'latter', 'for', 'instance', 'in', 'conjunction', 'with', 'arf', 'another', 'tumor', 'suppressor', 'as', 'shown', 'very', 'recently', 'to', 'more', 'easily', 'determine', 'which', 'of', 'these', 'artificial', 'settings', 'comes', 'closest', 'to', 'real', 'life', 'i', 'discuss', 'here', 'their', 'features', 'in', 'the', 'light', 'of', 'my', 'protein', 'structurebased', 'insights', 'that', 'have', 'led', 'me', 'to', 'propose', 'a', 'physiological', 'antiaging', 'role', 'for', 'the', 'retinoblastoma', 'tumor', 'suppressor', 'protein', 'rb', 'over', 'the', 'past', 'four', 'years']] | [-0.04383700442874534, 0.15755119297303197, -0.05777759922859378, 0.08066547850970752, -0.03798100498154696, -0.18638744245434546, 0.01700408945982464, 0.3682375157204194, -0.24066345176349083, -0.2667291933893521, 0.050845678793226615, -0.24029663940254822, -0.2538334338241217, 0.2099749138777773, -0.12657081277475843, 0.012903182496690853, 0.06591427875443912, 0.07177917662466693, 0.0907540431069051, -0.2735759841883157, 0.22554600160791832, 0.06468902066107203, 0.2657805810937196, 0.008003776225870332, 0.1029612623855599, -0.08057525449902074, -0.022966331764498454, -0.017107294134111103, -0.08471593132341314, 0.13440881957674128, 0.3421180089472051, 0.1996984890459153, 0.3220677069730611, -0.4984162936353276, -0.2687323255062454, 0.1499881948877731, 0.19409631945901257, 0.14849712802634502, -0.054951954967940315, -0.2665283779303233, 0.05777655685973218, -0.1424593794822263, -0.08078254986172304, -0.07276912732547325, 0.04789540262367481, 0.03482017565655928, -0.21167134954474676, 0.06911897607561615, 0.0012633232320221062, 0.13249489422250763, -0.07686196820428357, -0.16798280816700342, -0.012358837220698403, 0.18003365305913055, 0.08029711247385982, 0.008393794751893252, 0.20946101295865244, -0.14711503954663968, -0.16115163825452328, 0.34963909259591347, 0.020680407125853065, -0.17183925630524755, 0.24855799933509407, -0.11630341534017243, -0.13576455613295746, 0.10989693886775555, 0.15311285858062437, 0.07708224490818241, -0.21794832261024505, -0.009173856355631962, 0.014010499916079208, 0.137864586391733, 0.14272178267725769, 0.005209701422315378, 0.2129038569326393, 0.2073858266369973, -0.04025790690937931, 0.11245956248802762, -0.08552068002864273, -0.11019495222419022, -0.15865104969413793, -0.2050901492818808, -0.09753289384544532, 0.07030081525484784, -0.034247369115423955, -0.178415466552455, 0.37034007392696333, 0.10348041454960918, 0.17487643677422887, 0.023826309421067882, 0.21498167796585804, -0.02332633546887873, 0.13743430722114813, -0.05840891977258695, 0.1971986602482378, 0.05518770471422209, 0.11705903557594866, -0.2680639238534575, 0.16851696459890908, -0.009668510984310992] |
707.4175 | On Hadamard matrices at roots of unity | This paper has been withdrawn by the authors, the main result being known
since Lam and Leung, J. Algebra 2000.
| math.CO | this paper has been withdrawn by the authors the main result being known since lam and leung j algebra 2000 | [['this', 'paper', 'has', 'been', 'withdrawn', 'by', 'the', 'authors', 'the', 'main', 'result', 'being', 'known', 'since', 'lam', 'and', 'leung', 'j', 'algebra', '2000']] | [-0.09147017784416675, 0.004682807391509414, -0.06576270153746008, -0.04469173758407123, -0.12234678063541651, -0.1190218549920246, -0.02241276073618792, 0.27172873076051474, -0.2682449705898762, -0.3854289246723056, 0.17878573052585126, -0.2310625015757978, -0.15499034328386188, 0.10511438963003457, -0.2967106309719384, 0.033999789878726004, -0.007225556671619416, -0.07682529045268893, 0.06610171017237007, -0.4005516848526895, 0.2895517042838037, 0.14632731024175882, 0.2197008900300716, 0.14450585269369184, 0.03679560826858506, 0.0032637642696499826, -0.2077367932331981, -0.05524360125418752, -0.2099470507353544, 0.05573677401989698, 0.2426274551078677, 0.07125059388345108, 0.35236675199121237, -0.27339888699352743, -0.15768977659754455, 0.10437189373769798, 0.17584309205412865, 0.07972618420608342, -0.025263092154636978, -0.35679977349936964, 0.11521932953037321, -0.3154897091910243, -0.10197952960152179, 0.021929837454808875, 0.24749822926241904, -0.0584494698792696, -0.12875883616507053, 0.026645295158959924, 0.24450834859162568, 0.1297475092113018, 0.03345492901280522, -0.251728171040304, 0.008458207454532385, 0.07905534626916051, 0.11907784193754196, 0.18537444841349499, -0.0051209691911935805, 0.04658570309402421, -0.1509172286838293, 0.29813890615478156, 0.059669094253331424, -0.09732118649408221, 0.18459162190556527, -0.08444504890358076, -0.143542895372957, 0.08472730913199485, -0.017019362794235347, 0.0917215658351779, -0.2249402731191367, 0.24752444647892843, -0.16650083414278924, 0.04888334007118829, 0.2585563286207616, -0.1100889828056097, 0.01866285055875778, 0.07049226916860789, -0.048136320477351544, 0.11719562145881354, 0.04280812735669315, -0.029940034006722273, -0.18914074450731277, -0.17724796906113624, -0.27524341735988855, 0.12028600857593119, 0.18378103340583038, -0.007320564426481724, 0.3874566093087196, 0.1256577425636351, 0.14413962215185167, -0.03257775316014886, 0.25642450265586375, 0.13005141368485057, 0.06866577249020338, 0.10081415735185147, 0.3138170248828828, 0.2795673105982132, 0.2059700104407966, -0.020650746999308467, 0.1243970550596714, 0.21872172486037017] |
707.4176 | Nuclear spirals as feeding channels to the Supermassive Black Hole: the
case of the galaxy NGC 6951 | We report the discovery of gas streaming motions along nuclear spiral arms
towards the LINER nucleus of the galaxy NGC 6951. The observations, obtained
using the GMOS integral field spectrograph on the Gemini North telescope,
yielded maps of the flux distributions and gas kinematics in the Halpha,
[NII]6584 and [SII]6717,31 emission lines of the inner 7x5 arcsec^2 of the
galaxy. This region includes a circumnuclear star-forming ring with radius
500pc, a nuclear spiral inside the ring and the LINER nucleus. The kinematics
of the ionized gas is dominated by rotation, but subtraction of a kinematic
model of a rotating exponential disk reveals deviations from circular rotation
within the nuclear ring which can be attributed to (1) streaming motions along
the nuclear spiral arms and (2) a bipolar outflow which seems to be associated
to a nuclear jet. On the basis of the observed streaming velocities and
geometry of the spiral arms we estimate a mass inflow rate of ionized gas of
3x10^(-4) Msun/yr, which is of the order of the accretion rate necessary to
power the LINER nucleus of NGC 6951. Similar streaming motions towards the
nucleus of another galaxy with LINER nucleus -- NGC 1097 -- have been reported
by our group in a previous paper. Taken together, these results support a
scenario in which nuclear spirals are channels through which matter is
transferred from galactic scales to the nuclear region to feed the supermassive
black hole.
| astro-ph | we report the discovery of gas streaming motions along nuclear spiral arms towards the liner nucleus of the galaxy ngc 6951 the observations obtained using the gmos integral field spectrograph on the gemini north telescope yielded maps of the flux distributions and gas kinematics in the halpha nii6584 and sii671731 emission lines of the inner 7x5 arcsec2 of the galaxy this region includes a circumnuclear starforming ring with radius 500pc a nuclear spiral inside the ring and the liner nucleus the kinematics of the ionized gas is dominated by rotation but subtraction of a kinematic model of a rotating exponential disk reveals deviations from circular rotation within the nuclear ring which can be attributed to 1 streaming motions along the nuclear spiral arms and 2 a bipolar outflow which seems to be associated to a nuclear jet on the basis of the observed streaming velocities and geometry of the spiral arms we estimate a mass inflow rate of ionized gas of 3x104 msunyr which is of the order of the accretion rate necessary to power the liner nucleus of ngc 6951 similar streaming motions towards the nucleus of another galaxy with liner nucleus ngc 1097 have been reported by our group in a previous paper taken together these results support a scenario in which nuclear spirals are channels through which matter is transferred from galactic scales to the nuclear region to feed the supermassive black hole | [['we', 'report', 'the', 'discovery', 'of', 'gas', 'streaming', 'motions', 'along', 'nuclear', 'spiral', 'arms', 'towards', 'the', 'liner', 'nucleus', 'of', 'the', 'galaxy', 'ngc', '6951', 'the', 'observations', 'obtained', 'using', 'the', 'gmos', 'integral', 'field', 'spectrograph', 'on', 'the', 'gemini', 'north', 'telescope', 'yielded', 'maps', 'of', 'the', 'flux', 'distributions', 'and', 'gas', 'kinematics', 'in', 'the', 'halpha', 'nii6584', 'and', 'sii671731', 'emission', 'lines', 'of', 'the', 'inner', '7x5', 'arcsec2', 'of', 'the', 'galaxy', 'this', 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707.4177 | Coupling Between An Optical Phonon and the Kondo Effect | We explore the ultra-fast optical response of Yb_{14}MnSb_{11}, providing
further evidence that this Zintl compound is the first ferromagnetic,
under-screened Kondo lattice. These experiments also provide the first
demonstration of coupling between an optical phonon mode and the Kondo effect.
| cond-mat.str-el | we explore the ultrafast optical response of yb_14mnsb_11 providing further evidence that this zintl compound is the first ferromagnetic underscreened kondo lattice these experiments also provide the first demonstration of coupling between an optical phonon mode and the kondo effect | [['we', 'explore', 'the', 'ultrafast', 'optical', 'response', 'of', 'yb_14mnsb_11', 'providing', 'further', 'evidence', 'that', 'this', 'zintl', 'compound', 'is', 'the', 'first', 'ferromagnetic', 'underscreened', 'kondo', 'lattice', 'these', 'experiments', 'also', 'provide', 'the', 'first', 'demonstration', 'of', 'coupling', 'between', 'an', 'optical', 'phonon', 'mode', 'and', 'the', 'kondo', 'effect']] | [-0.16893015400721476, 0.1833534413767316, -0.08637130403747925, 0.0021005327311845925, -0.08383012591646267, -0.149358667839223, 0.12084439585510737, 0.4349704782765072, -0.27644356524046415, -0.221452800079416, 0.009438426723369421, -0.3041738383471966, -0.20320226834752622, 0.1908239062445668, 0.12474697770980689, -0.018154802803809825, -0.03318828850602492, -0.08122247946373999, -0.06286856395383485, -0.20141930386233023, 0.25417398799879426, 0.05815736376546109, 0.3079625834257175, 0.17543469230907086, 0.057806912857370496, 0.022111102365530454, 0.13412225326427665, -0.05645088329821682, -0.18136098087285438, 0.0851945925074128, 0.2355445772409439, -0.12040841975846352, 0.2531306551626095, -0.4309828379310859, -0.16553683543147948, 0.015528600233105512, 0.14193794876337051, 0.22202355476717153, -0.11983442416366859, -0.2884809440240646, -0.01974575374370966, -0.172991033237523, -0.06703459798621061, -0.14782942764652082, -0.05644257275913006, -0.060157877703507744, -0.2658168234122105, 0.08569360059874061, 0.10525288703875282, 0.15957525594589803, -0.10379335671090163, -0.08055260235395952, -0.0030670357653154777, 0.0861394231279309, 0.028573333614099868, -0.0058274067078645415, 0.08547512715300307, -0.07196352768761034, -0.18823361811108696, 0.3705458147212481, -0.06723997128219941, -0.002896366211084219, 0.16781924206476945, -0.1922157070814417, -0.05737456509795708, 0.10980270642978258, 0.10649573473403087, 0.03992546302003738, -0.13842901064512822, 0.02057381864869967, -0.06824850367429929, 0.2159065025834701, -0.03334144269450544, 0.15997212536883756, 0.2622296343294856, 0.27235638024285436, 0.015166609404751888, 0.21672648141303888, -0.1499932061474866, -0.006359302844756689, -0.26822953219883716, -0.1789899988529774, -0.23778941034778164, 0.05545806095529443, -0.0829600051925249, -0.14109012954987776, 0.4140498533080786, 0.22805390944585013, 0.15612717736990023, -0.056765287541426145, 0.278424134477973, 0.13541203937851465, 0.010835758864115447, -0.02000310005715642, 0.31435436468857986, 0.1478685731641375, 0.09247772815899971, -0.4128922924327736, 0.0167981118011551, 0.006917783894982093] |
707.4178 | Topological persistence and dynamical heterogeneities near jamming | We introduce topological methods for quantifying spatially heterogeneous
dynamics, and use these tools to analyze particle-tracking data for a
quasi-two-dimensional granular system of air-fluidized beads on approach to
jamming. In particular we define two overlap order parameters, which quantify
the correlation between particle configurations at different times, based on a
Voronoi construction and the persistence in the resulting cells and nearest
neighbors. Temporal fluctuations in the decay of the persistent area and bond
order parameters define two alternative dynamic four-point susceptibilities,
XA(t) and XB(t), well-suited for characterizing spatially-heterogeneous
dynamics. These are analogous to the standard four-point dynamic susceptibility
X4(l,t), but where the space-dependence is fixed uniquely by topology rather
than by discretionary choice of cutoff function. While these three
susceptibilities yield characteristic time scales that are somewhat different,
they give domain sizes for the dynamical heterogeneities that are in good
agreement and that diverge on approach to jamming.
| cond-mat.soft | we introduce topological methods for quantifying spatially heterogeneous dynamics and use these tools to analyze particletracking data for a quasitwodimensional granular system of airfluidized beads on approach to jamming in particular we define two overlap order parameters which quantify the correlation between particle configurations at different times based on a voronoi construction and the persistence in the resulting cells and nearest neighbors temporal fluctuations in the decay of the persistent area and bond order parameters define two alternative dynamic fourpoint susceptibilities xat and xbt wellsuited for characterizing spatiallyheterogeneous dynamics these are analogous to the standard fourpoint dynamic susceptibility x4lt but where the spacedependence is fixed uniquely by topology rather than by discretionary choice of cutoff function while these three susceptibilities yield characteristic time scales that are somewhat different they give domain sizes for the dynamical heterogeneities that are in good agreement and that diverge on approach to jamming | [['we', 'introduce', 'topological', 'methods', 'for', 'quantifying', 'spatially', 'heterogeneous', 'dynamics', 'and', 'use', 'these', 'tools', 'to', 'analyze', 'particletracking', 'data', 'for', 'a', 'quasitwodimensional', 'granular', 'system', 'of', 'airfluidized', 'beads', 'on', 'approach', 'to', 'jamming', 'in', 'particular', 'we', 'define', 'two', 'overlap', 'order', 'parameters', 'which', 'quantify', 'the', 'correlation', 'between', 'particle', 'configurations', 'at', 'different', 'times', 'based', 'on', 'a', 'voronoi', 'construction', 'and', 'the', 'persistence', 'in', 'the', 'resulting', 'cells', 'and', 'nearest', 'neighbors', 'temporal', 'fluctuations', 'in', 'the', 'decay', 'of', 'the', 'persistent', 'area', 'and', 'bond', 'order', 'parameters', 'define', 'two', 'alternative', 'dynamic', 'fourpoint', 'susceptibilities', 'xat', 'and', 'xbt', 'wellsuited', 'for', 'characterizing', 'spatiallyheterogeneous', 'dynamics', 'these', 'are', 'analogous', 'to', 'the', 'standard', 'fourpoint', 'dynamic', 'susceptibility', 'x4lt', 'but', 'where', 'the', 'spacedependence', 'is', 'fixed', 'uniquely', 'by', 'topology', 'rather', 'than', 'by', 'discretionary', 'choice', 'of', 'cutoff', 'function', 'while', 'these', 'three', 'susceptibilities', 'yield', 'characteristic', 'time', 'scales', 'that', 'are', 'somewhat', 'different', 'they', 'give', 'domain', 'sizes', 'for', 'the', 'dynamical', 'heterogeneities', 'that', 'are', 'in', 'good', 'agreement', 'and', 'that', 'diverge', 'on', 'approach', 'to', 'jamming']] | [-0.1356297740214986, 0.17730932728997592, -0.08824592405641131, 0.101550043102129, -0.033521715063473276, -0.13541227318426788, 0.03147201058454811, 0.38322655201472083, -0.24805388925918218, -0.27600293851875024, 0.08610520707804646, -0.2846133962145139, -0.16824335680857044, 0.15277983219089822, 0.015465421582861193, 0.052410287557747855, -0.012519748746578036, 0.002849535045117654, -0.06583937901024033, -0.21006683071850446, 0.32216612872153777, 0.020631325222423363, 0.2969179890792945, 0.039990491529220136, 0.07733317842658866, 0.0339234175818876, -0.013713693586659843, 0.08622592900847567, -0.18569070777031874, 0.093324203707342, 0.23455473889821563, 0.03538704204116145, 0.19753771828455402, -0.43201589741069696, -0.2080617361716075, 0.09248570281980109, 0.1298654190597831, 0.07823955478259073, 0.024108347916526014, -0.24037264025416868, 0.08490115052153324, -0.13169206886327472, -0.1061482804875564, -0.1409091674345385, 0.035923094631590206, 0.06540243631381348, -0.255758422458994, 0.10648856416730018, -0.0007934751801979568, 0.07154886275529862, -0.03873112143081581, -0.0989311125025089, 0.010467341693182444, 0.15787504293538374, 0.04305312743185666, 0.007571720256438029, 0.1509818472192976, -0.11700361537072679, -0.10777749653929716, 0.3632494042338482, -0.028053099934738288, -0.21360723099446502, 0.2384246649397216, -0.15013351983487092, -0.12945627363655587, 0.12245238691825291, 0.18328668822470154, 0.09346322275633956, -0.1666568355313663, 0.008090230158594405, 0.012317844599501455, 0.18703024675748472, 0.07394087134121821, 0.06318619133345582, 0.20036717021861916, 0.15445241730917117, 0.07243030319183037, 0.14311378057403812, -0.09218409137382846, -0.16824631506320217, -0.25427606970971, -0.10126734753319962, -0.18307013411139106, 0.006945724159093766, -0.1531768788802357, -0.17532980409932547, 0.38761477841642394, 0.17503614991357358, 0.19955919181349976, 0.1105600787720097, 0.27357455563635147, 0.06587468626234552, 0.061677129675859005, 0.056580730012200514, 0.1993401882784634, 0.09079906900477563, 0.09333803521244434, -0.23400088202946917, 0.07146715401382796, 0.07686639830213168] |
707.4179 | Inflationary perturbations in anisotropic backgrounds and their imprint
on the CMB | We extend the standard theory of cosmological perturbations to homogeneous
but anisotropic universes. We present an exhaustive computation for the case of
a Bianchi I model, with a residual isotropy between two spatial dimensions,
which is undergoing complete isotropization at the onset of inflation; we also
show how the computation can be further extended to more general backgrounds.
In presence of a single inflaton field, there are three physical perturbations
(precisely as in the isotropic case), which are obtained (i) by removing gauge
and nondynamical degrees of freedom, and (ii) by finding the combinations of
the remaining modes in terms of which the quadratic action of the perturbations
is canonical. The three perturbations, which later in the isotropic regime
become a scalar mode and two tensor polarizations (gravitational wave), are
coupled to each other already at the linearized level during the anisotropic
phase. This generates nonvanishing correlations between different modes of the
CMB anisotropies, which can be particularly relevant at large scales (and,
potentially, be related to the large scale anomalies in the WMAP data). As an
example, we compute the spectrum of the perturbations in this Bianchi I
geometry, assuming that the inflaton is in a slow roll regime also in the
anisotropic phase. For this simple set-up, fixing the initial conditions for
the perturbations appears more difficult than in the standard case, and
additional assumptions seem to be needed to provide predictions for the CMB
anisotropies.
| astro-ph gr-qc hep-ph hep-th | we extend the standard theory of cosmological perturbations to homogeneous but anisotropic universes we present an exhaustive computation for the case of a bianchi i model with a residual isotropy between two spatial dimensions which is undergoing complete isotropization at the onset of inflation we also show how the computation can be further extended to more general backgrounds in presence of a single inflaton field there are three physical perturbations precisely as in the isotropic case which are obtained i by removing gauge and nondynamical degrees of freedom and ii by finding the combinations of the remaining modes in terms of which the quadratic action of the perturbations is canonical the three perturbations which later in the isotropic regime become a scalar mode and two tensor polarizations gravitational wave are coupled to each other already at the linearized level during the anisotropic phase this generates nonvanishing correlations between different modes of the cmb anisotropies which can be particularly relevant at large scales and potentially be related to the large scale anomalies in the wmap data as an example we compute the spectrum of the perturbations in this bianchi i geometry assuming that the inflaton is in a slow roll regime also in the anisotropic phase for this simple setup fixing the initial conditions for the perturbations appears more difficult than in the standard case and additional assumptions seem to be needed to provide predictions for the cmb anisotropies | [['we', 'extend', 'the', 'standard', 'theory', 'of', 'cosmological', 'perturbations', 'to', 'homogeneous', 'but', 'anisotropic', 'universes', 'we', 'present', 'an', 'exhaustive', 'computation', 'for', 'the', 'case', 'of', 'a', 'bianchi', 'i', 'model', 'with', 'a', 'residual', 'isotropy', 'between', 'two', 'spatial', 'dimensions', 'which', 'is', 'undergoing', 'complete', 'isotropization', 'at', 'the', 'onset', 'of', 'inflation', 'we', 'also', 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707.418 | Oscillatory D'yakonov-Perel' spin dynamics in two dimensional electron
gases | Optical pump-probe measurements of spin-dynamics at temperatures down to 1.5K
are described for a series of (001)-oriented GaAs/AlGaAs quantum well samples
containing high mobility two-dimensional electron gases (2DEGs). For well
widths ranging from 5 nm to 20 nm and 2DEG sheet densities from 1.75x1011cm-2
to 3.5x1011cm-2 the evolution of a small injected spin population is found to
be a damped oscillation rather than exponential relaxation, consistent with the
quasi-collision-free regime of D'yakonov-Perel spin dynamics. A Monte Carlo
simulation method is used to extract the spin-orbit-induced electron spin
precession frequency |W(kF)| and electron momentum scattering time tp* at the
Fermi wavevector. The spin decay time passes through a minimum at a temperature
corresponding to the transition from collision-free to collision-dominated
regimes and tp* is found to be close to the ensemble momentum scattering time
tp obtained from Hall measurements of electron mobility. The values of |W(kF)|
give the Dresselhaus (BIA) coefficient of spin-orbit interaction as a function
of electron confinement energy in the quantum show, qualitatively, the
behaviour expected from k.p theory.
| cond-mat.other | optical pumpprobe measurements of spindynamics at temperatures down to 15k are described for a series of 001oriented gaasalgaas quantum well samples containing high mobility twodimensional electron gases 2degs for well widths ranging from 5 nm to 20 nm and 2deg sheet densities from 175x1011cm2 to 35x1011cm2 the evolution of a small injected spin population is found to be a damped oscillation rather than exponential relaxation consistent with the quasicollisionfree regime of dyakonovperel spin dynamics a monte carlo simulation method is used to extract the spinorbitinduced electron spin precession frequency wkf and electron momentum scattering time tp at the fermi wavevector the spin decay time passes through a minimum at a temperature corresponding to the transition from collisionfree to collisiondominated regimes and tp is found to be close to the ensemble momentum scattering time tp obtained from hall measurements of electron mobility the values of wkf give the dresselhaus bia coefficient of spinorbit interaction as a function of electron confinement energy in the quantum show qualitatively the behaviour expected from kp theory | [['optical', 'pumpprobe', 'measurements', 'of', 'spindynamics', 'at', 'temperatures', 'down', 'to', '15k', 'are', 'described', 'for', 'a', 'series', 'of', '001oriented', 'gaasalgaas', 'quantum', 'well', 'samples', 'containing', 'high', 'mobility', 'twodimensional', 'electron', 'gases', '2degs', 'for', 'well', 'widths', 'ranging', 'from', '5', 'nm', 'to', '20', 'nm', 'and', '2deg', 'sheet', 'densities', 'from', '175x1011cm2', 'to', '35x1011cm2', 'the', 'evolution', 'of', 'a', 'small', 'injected', 'spin', 'population', 'is', 'found', 'to', 'be', 'a', 'damped', 'oscillation', 'rather', 'than', 'exponential', 'relaxation', 'consistent', 'with', 'the', 'quasicollisionfree', 'regime', 'of', 'dyakonovperel', 'spin', 'dynamics', 'a', 'monte', 'carlo', 'simulation', 'method', 'is', 'used', 'to', 'extract', 'the', 'spinorbitinduced', 'electron', 'spin', 'precession', 'frequency', 'wkf', 'and', 'electron', 'momentum', 'scattering', 'time', 'tp', 'at', 'the', 'fermi', 'wavevector', 'the', 'spin', 'decay', 'time', 'passes', 'through', 'a', 'minimum', 'at', 'a', 'temperature', 'corresponding', 'to', 'the', 'transition', 'from', 'collisionfree', 'to', 'collisiondominated', 'regimes', 'and', 'tp', 'is', 'found', 'to', 'be', 'close', 'to', 'the', 'ensemble', 'momentum', 'scattering', 'time', 'tp', 'obtained', 'from', 'hall', 'measurements', 'of', 'electron', 'mobility', 'the', 'values', 'of', 'wkf', 'give', 'the', 'dresselhaus', 'bia', 'coefficient', 'of', 'spinorbit', 'interaction', 'as', 'a', 'function', 'of', 'electron', 'confinement', 'energy', 'in', 'the', 'quantum', 'show', 'qualitatively', 'the', 'behaviour', 'expected', 'from', 'kp', 'theory']] | [-0.13175056619327186, 0.23521284634156495, -0.06349535733351164, 0.04599472063320783, 0.015655509792764248, -0.1813242663684461, 0.04952478528053075, 0.36658998168371176, -0.28427638767318825, -0.31022271084097713, -0.012251367412931865, -0.32496952456174166, -0.023560342629439783, 0.23897308956545132, 0.08773933521874205, 0.06047699549698654, -0.017807244664862665, -0.03824528304001691, -0.11159308405542062, -0.1691219315550031, 0.21882438884783514, 0.07865813098566816, 0.28536966341387854, 0.06674956634486391, 0.09667012034832725, 0.025695930228199392, 0.11137918442881738, -0.009610576309214108, -0.16557247505782272, -0.00903261749944567, 0.266746174709764, -0.11053932461744317, 0.1529697456267785, -0.4177267139986951, -0.20008545981984607, -0.03797336552118519, 0.16104903502511025, 0.17143775234219327, -0.03371642686470726, -0.25940764164166336, -0.00762658133088837, -0.16049494222770913, -0.1440255942054578, -0.044197430927857495, 0.025687369512471223, -0.012759311777710386, -0.29348713391565184, 0.1550258635818826, -0.0049231096333410785, 0.06776300199142486, -0.06124220791647553, -0.1113973351900835, -0.05952652157477197, 0.052140621963017705, 0.05190634081682973, 0.0693910734083217, 0.19515936083805102, -0.07570275662538524, -0.12385828544443594, 0.36277370017088023, -0.08855975722901305, -0.09937250296745075, 0.17759751808449362, -0.2541917959151007, 0.009245968073848965, 0.23291909896366342, 0.149229890540154, 0.08652472776600528, -0.13217213568236327, 0.05423221587705097, -0.003734179160739543, 0.16877691440708584, 0.06807451087639795, 0.06830037597390498, 0.25349108778910173, 0.17433426895085172, 0.025033943457032977, 0.0762815260384838, -0.1714000963680336, -0.07743454137927241, -0.19591887393269203, -0.12098718171087837, -0.24407955996427663, 0.14674238555585228, -0.04830820791841107, -0.1383438519740852, 0.39981858169979595, 0.14644147230852286, 0.21189525514047527, 0.028169480995578172, 0.28112855496590394, 0.15719662020713113, 0.06321885576196147, 0.054743698185863256, 0.2223687876104074, 0.19256886297743217, 0.12788053376038047, -0.325707046255833, 0.03554382552007026, -0.001520267062952753] |
707.4181 | Cosmological Perturbations on a Bouncing Brane | The cosmological perturbations on a bouncing brane are studied. The brane is
moving inside a Klebanov-Strassler throat where the infra-red region of the
geometry is smoothly cut off. For an observer confined to the world-volume of
the brane, this results in a non-singular bouncing mirage cosmology. We have
calculated the scalar perturbations corresponding to the normal displacements
of the brane. This is performed in the probe brane limit where the
gravitational back-reaction of the brane on the bulk throat is absent. Our
model provides a framework for studying the transfer of fluctuations from a
contracting to an expanding phase. We find that the spectral index of the
dominant mode of the metric fluctuation is un-changed, unlike what is obtained
by gluing contracting to expanding Einstein universes with the help of the
usual matching conditions. Assuming that the fluctuations start off in a vacuum
state on sub-Hubble scales during the contracting phase, it is shown that the
resulting spectral index n_s on super-Hubble scales in the expanding phase has
a large blue tilt. When the brane is moving slowly inside the throat and its
kinetic energy is negligible compared to its rest mass, one finds n_s=3. For a
fast-rolling brane with a large kinetic energy, the spectral index is n_s =
2.3. This may put severe constraints on models of mirage cosmology.
| hep-th astro-ph gr-qc hep-ph | the cosmological perturbations on a bouncing brane are studied the brane is moving inside a klebanovstrassler throat where the infrared region of the geometry is smoothly cut off for an observer confined to the worldvolume of the brane this results in a nonsingular bouncing mirage cosmology we have calculated the scalar perturbations corresponding to the normal displacements of the brane this is performed in the probe brane limit where the gravitational backreaction of the brane on the bulk throat is absent our model provides a framework for studying the transfer of fluctuations from a contracting to an expanding phase we find that the spectral index of the dominant mode of the metric fluctuation is unchanged unlike what is obtained by gluing contracting to expanding einstein universes with the help of the usual matching conditions assuming that the fluctuations start off in a vacuum state on subhubble scales during the contracting phase it is shown that the resulting spectral index n_s on superhubble scales in the expanding phase has a large blue tilt when the brane is moving slowly inside the throat and its kinetic energy is negligible compared to its rest mass one finds n_s3 for a fastrolling brane with a large kinetic energy the spectral index is n_s 23 this may put severe constraints on models of mirage cosmology | [['the', 'cosmological', 'perturbations', 'on', 'a', 'bouncing', 'brane', 'are', 'studied', 'the', 'brane', 'is', 'moving', 'inside', 'a', 'klebanovstrassler', 'throat', 'where', 'the', 'infrared', 'region', 'of', 'the', 'geometry', 'is', 'smoothly', 'cut', 'off', 'for', 'an', 'observer', 'confined', 'to', 'the', 'worldvolume', 'of', 'the', 'brane', 'this', 'results', 'in', 'a', 'nonsingular', 'bouncing', 'mirage', 'cosmology', 'we', 'have', 'calculated', 'the', 'scalar', 'perturbations', 'corresponding', 'to', 'the', 'normal', 'displacements', 'of', 'the', 'brane', 'this', 'is', 'performed', 'in', 'the', 'probe', 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707.4182 | A Luminosity Function of Lyman Alpha Emitting Galaxies at Redshift 4.5 | We present a catalog of 59 z=4.5 Lyman alpha emitting galaxies
spectroscopically confirmed in a campaign of Keck/DEIMOS follow-up observations
to candidates selected in the Large Area Lyman Alpha (LALA) narrow-band imaging
survey. We targeted 97 candidates for spectroscopic follow-up; by accounting
for the variety of conditions under which we performed spectroscopy, we
estimate a selection reliability of about 76%. Together with our previous
sample of Keck/LRIS confirmations, the 59 sources confirmed herein bring the
total catalog to 73 spectroscopically confirmed z=4.5 Lyman alpha emitting
galaxies in the 0.7 square degrees covered by the LALA imaging. As with the
Keck/LRIS sample, we find that a non-negligible fraction of the confirmed Lyman
alpha lines have rest-frame equivalent widths (w_{rest}) which exceed the
maximum predicted for normal stellar populations: 17% -- 31% (93% confidence)
of the detected galaxies show w_{rest} > 190 AA, and 12% -- 27% (90%
confidence) show w_{rest} > 240 AA. We construct a luminosity function of z=4.5
Lyman alpha emission lines for comparison to Lyman alpha luminosity functions
spanning 3.1 < z < 6.6. We find no significant evidence for Lyman alpha
luminosity function evolution from z ~ 3 to z ~ 6. This result supports the
conclusion that the intergalactic medium remains largely reionized from the
local universe out to z=6.5. It is somewhat at odds with the pronounced drop in
the cosmic star formation rate density recently measured between z~3 and z~6 in
continuum-selected Lyman-break galaxies, and therefore potentially sheds light
on the relationship between the two populations.
| astro-ph | we present a catalog of 59 z45 lyman alpha emitting galaxies spectroscopically confirmed in a campaign of keckdeimos followup observations to candidates selected in the large area lyman alpha lala narrowband imaging survey we targeted 97 candidates for spectroscopic followup by accounting for the variety of conditions under which we performed spectroscopy we estimate a selection reliability of about 76 together with our previous sample of kecklris confirmations the 59 sources confirmed herein bring the total catalog to 73 spectroscopically confirmed z45 lyman alpha emitting galaxies in the 07 square degrees covered by the lala imaging as with the kecklris sample we find that a nonnegligible fraction of the confirmed lyman alpha lines have restframe equivalent widths w_rest which exceed the maximum predicted for normal stellar populations 17 31 93 confidence of the detected galaxies show w_rest 190 aa and 12 27 90 confidence show w_rest 240 aa we construct a luminosity function of z45 lyman alpha emission lines for comparison to lyman alpha luminosity functions spanning 31 z 66 we find no significant evidence for lyman alpha luminosity function evolution from z 3 to z 6 this result supports the conclusion that the intergalactic medium remains largely reionized from the local universe out to z65 it is somewhat at odds with the pronounced drop in the cosmic star formation rate density recently measured between z3 and z6 in continuumselected lymanbreak galaxies and therefore potentially sheds light on the relationship between the two populations | [['we', 'present', 'a', 'catalog', 'of', '59', 'z45', 'lyman', 'alpha', 'emitting', 'galaxies', 'spectroscopically', 'confirmed', 'in', 'a', 'campaign', 'of', 'keckdeimos', 'followup', 'observations', 'to', 'candidates', 'selected', 'in', 'the', 'large', 'area', 'lyman', 'alpha', 'lala', 'narrowband', 'imaging', 'survey', 'we', 'targeted', '97', 'candidates', 'for', 'spectroscopic', 'followup', 'by', 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707.4183 | Electric Charge in Interaction with Magnetically Charged Black Holes | We examine the angular momentum of an electric charge e placed at rest
outside a dilaton black hole with magnetic charge Q. The electromagnetic
angular momentum which is stored in the electromagnetic field outside the black
hole shows several common features regardless of the dilaton coupling strength,
though the dilaton black holes are drastically different in their spacetime
structure depending on it. First, the electromagnetic angular momentum depends
on the separation distance between the two objects and changes monotonically
from eQ to 0 as the charge goes down from infinity to the horizon, if
rotational effects of the black hole are discarded. Next, as the black hole
approaches extremality, however, the electromagnetic angular momentum tends to
be independent of the distance between the two objects. It is then precisely
$eQ$ as in the electric charge and monopole system in flat spacetime. We
discuss why these effects are exhibited and argue that the above features are
to hold in widely generic settings including black hole solutions in theories
with more complicated field contents, by addressing the no hair theorem for
black holes and the phenomenon of field expulsion exhibited by extremal black
holes.
| gr-qc | we examine the angular momentum of an electric charge e placed at rest outside a dilaton black hole with magnetic charge q the electromagnetic angular momentum which is stored in the electromagnetic field outside the black hole shows several common features regardless of the dilaton coupling strength though the dilaton black holes are drastically different in their spacetime structure depending on it first the electromagnetic angular momentum depends on the separation distance between the two objects and changes monotonically from eq to 0 as the charge goes down from infinity to the horizon if rotational effects of the black hole are discarded next as the black hole approaches extremality however the electromagnetic angular momentum tends to be independent of the distance between the two objects it is then precisely eq as in the electric charge and monopole system in flat spacetime we discuss why these effects are exhibited and argue that the above features are to hold in widely generic settings including black hole solutions in theories with more complicated field contents by addressing the no hair theorem for black holes and the phenomenon of field expulsion exhibited by extremal black holes | [['we', 'examine', 'the', 'angular', 'momentum', 'of', 'an', 'electric', 'charge', 'e', 'placed', 'at', 'rest', 'outside', 'a', 'dilaton', 'black', 'hole', 'with', 'magnetic', 'charge', 'q', 'the', 'electromagnetic', 'angular', 'momentum', 'which', 'is', 'stored', 'in', 'the', 'electromagnetic', 'field', 'outside', 'the', 'black', 'hole', 'shows', 'several', 'common', 'features', 'regardless', 'of', 'the', 'dilaton', 'coupling', 'strength', 'though', 'the', 'dilaton', 'black', 'holes', 'are', 'drastically', 'different', 'in', 'their', 'spacetime', 'structure', 'depending', 'on', 'it', 'first', 'the', 'electromagnetic', 'angular', 'momentum', 'depends', 'on', 'the', 'separation', 'distance', 'between', 'the', 'two', 'objects', 'and', 'changes', 'monotonically', 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707.4184 | Restriction of characters and products of characters | Let G be a finite p-group, for some prime p, and $\psi, \theta \in \Irr(G)$
be irreducible complex characters of G. It has been proved that if, in
addition, $\psi,\theta$ are faithful characters, then the product $\psi\theta$
is a multiple of an irreducible or it is the nontrivial linear combination of
at least $\frac{p+1}{2}$ distinct irreducible characters of G. We show that if
we do not require the characters to be faithful, then given any integer k>0, we
can always find a p-group G and irreducible characters $\Psi$ and $\Theta$ such
that $\Psi\Theta$ is the nontrivial combination of exactly k distinct
irreducible characters. We do this by translating examples of decompositions of
restrictions of characters into decompositions of products of characters.
| math.GR | let g be a finite pgroup for some prime p and psi theta in irrg be irreducible complex characters of g it has been proved that if in addition psitheta are faithful characters then the product psitheta is a multiple of an irreducible or it is the nontrivial linear combination of at least fracp12 distinct irreducible characters of g we show that if we do not require the characters to be faithful then given any integer k0 we can always find a pgroup g and irreducible characters psi and theta such that psitheta is the nontrivial combination of exactly k distinct irreducible characters we do this by translating examples of decompositions of restrictions of characters into decompositions of products of characters | [['let', 'g', 'be', 'a', 'finite', 'pgroup', 'for', 'some', 'prime', 'p', 'and', 'psi', 'theta', 'in', 'irrg', 'be', 'irreducible', 'complex', 'characters', 'of', 'g', 'it', 'has', 'been', 'proved', 'that', 'if', 'in', 'addition', 'psitheta', 'are', 'faithful', 'characters', 'then', 'the', 'product', 'psitheta', 'is', 'a', 'multiple', 'of', 'an', 'irreducible', 'or', 'it', 'is', 'the', 'nontrivial', 'linear', 'combination', 'of', 'at', 'least', 'fracp12', 'distinct', 'irreducible', 'characters', 'of', 'g', 'we', 'show', 'that', 'if', 'we', 'do', 'not', 'require', 'the', 'characters', 'to', 'be', 'faithful', 'then', 'given', 'any', 'integer', 'k0', 'we', 'can', 'always', 'find', 'a', 'pgroup', 'g', 'and', 'irreducible', 'characters', 'psi', 'and', 'theta', 'such', 'that', 'psitheta', 'is', 'the', 'nontrivial', 'combination', 'of', 'exactly', 'k', 'distinct', 'irreducible', 'characters', 'we', 'do', 'this', 'by', 'translating', 'examples', 'of', 'decompositions', 'of', 'restrictions', 'of', 'characters', 'into', 'decompositions', 'of', 'products', 'of', 'characters']] | [-0.20304600652095608, 0.15356572700507096, -0.15399943564995383, -0.008537223860852358, -0.13687312468301413, -0.153378249065227, -0.03928729411876522, 0.3810294624379536, -0.3342640625143593, -0.2081201074198504, 0.07594172851459607, -0.2847053326420055, -0.1378286115167093, 0.17563568261521292, -0.07178096385087726, -0.049935895331927445, 0.07804627975926173, 0.16315875098509483, -0.0818004392737846, -0.28482683437052836, 0.3508841944011775, -0.12685417861885523, 0.16167344610891804, 0.03223113897295037, 0.11808217507748564, -0.002007068810245592, 0.04373536306656589, -0.026078520036756623, -0.10246616971292023, 0.058155822779305956, 0.35388866300917854, 0.09326146116426354, 0.19753229843591116, -0.35562464310056413, -0.10223661514753399, 0.2760908752872247, 0.15546188600484498, -0.0011352036102128423, 0.035565523793420574, -0.23923440033585325, 0.18359243387571914, -0.20201640899393183, -0.06847830745968814, -0.10637564112794054, 0.1451132367249609, -0.033655385586841044, -0.2951727240877457, -0.01086700702671054, 0.13298898281083127, 0.11795879432485123, -0.024908348146348822, -0.20080948046847316, -0.061357287640013726, 0.13273255735027703, -0.023441461166982685, 0.04105811854747455, 0.004477597472896753, -0.12830925325493614, -0.10382151456688307, 0.3798062877714141, -0.05797862945786439, -0.23446332843404663, 0.12984982925690403, -0.20183405477538213, -0.16805781003988293, 0.1480519683369674, 0.10046670524295696, 0.1372118636288426, 0.0009222956189562467, 0.17269179348743421, -0.1556589573675628, 0.1326430938870469, 0.09773686497033504, -0.04601595684701253, 0.17287265302320895, 0.020228722163529927, 0.013528237334829716, 0.12470742410206628, 0.05375558282595035, 0.13390485038557512, -0.35118162914897, -0.19167021047016067, -0.18112551719566022, 0.13316377994524073, -0.0881898899305052, -0.15503401966565403, 0.4034753832812152, 0.04809542086113952, 0.1594319942153313, 0.09657162770028573, 0.18801852711283965, 0.11449661026978172, 0.08410023009666234, 0.09880931600389525, 0.07309301704103859, 0.15942267379492583, -0.17119526546467712, -0.16140336614517756, 0.03026627665597268, 0.11954431104558436] |
707.4185 | Frozen fronts in cellular flows | We present experiments on the behavior of reaction fronts in ordered and
disordered cellular flows with imposed winds. Fronts in a chain of alternating
vortices are found to freeze (pin to the separatrix) for a wide range of
imposed winds that grows nonlinearly with the characteristic strength of the
underlying vorticity. Experiments in spatially-disordered flows demonstrate
that freezing of fronts is common to cellular flows; furthermore, it is not
dependent on boundary conditions. We therefore anticipate similar pinning in a
wide range of cellular flows and front-producing systems.
| nlin.PS | we present experiments on the behavior of reaction fronts in ordered and disordered cellular flows with imposed winds fronts in a chain of alternating vortices are found to freeze pin to the separatrix for a wide range of imposed winds that grows nonlinearly with the characteristic strength of the underlying vorticity experiments in spatiallydisordered flows demonstrate that freezing of fronts is common to cellular flows furthermore it is not dependent on boundary conditions we therefore anticipate similar pinning in a wide range of cellular flows and frontproducing systems | [['we', 'present', 'experiments', 'on', 'the', 'behavior', 'of', 'reaction', 'fronts', 'in', 'ordered', 'and', 'disordered', 'cellular', 'flows', 'with', 'imposed', 'winds', 'fronts', 'in', 'a', 'chain', 'of', 'alternating', 'vortices', 'are', 'found', 'to', 'freeze', 'pin', 'to', 'the', 'separatrix', 'for', 'a', 'wide', 'range', 'of', 'imposed', 'winds', 'that', 'grows', 'nonlinearly', 'with', 'the', 'characteristic', 'strength', 'of', 'the', 'underlying', 'vorticity', 'experiments', 'in', 'spatiallydisordered', 'flows', 'demonstrate', 'that', 'freezing', 'of', 'fronts', 'is', 'common', 'to', 'cellular', 'flows', 'furthermore', 'it', 'is', 'not', 'dependent', 'on', 'boundary', 'conditions', 'we', 'therefore', 'anticipate', 'similar', 'pinning', 'in', 'a', 'wide', 'range', 'of', 'cellular', 'flows', 'and', 'frontproducing', 'systems']] | [-0.208354068454355, 0.21827735248303345, -0.04780452089082331, 0.029951390044135582, -0.060883807730427834, -0.09917380756611914, 0.02075095120330103, 0.38841855128533964, -0.3042953009608873, -0.20040518977830923, 0.0946323599146549, -0.2408557959702299, -0.14499880756836298, 0.22498661396635133, 0.001978176201931959, 0.033961304355152815, 0.04226401138530914, -0.014111645249000122, -0.03902911935082832, -0.207166456227559, 0.3261955505410253, 0.013690773725271398, 0.30812983070825073, 0.09155173124312314, 0.08356333546730321, -0.08703772584517855, 0.0490134151674114, 0.06524005479200981, -0.17987050265050086, 0.04782589964113783, 0.24584570345143938, 0.0485864523365054, 0.20935513516671436, -0.4891440930754639, -0.3171771661010246, 0.08589282528995427, 0.19400324321048723, 0.08986387069900195, -0.029962696094434103, -0.241922072053692, 0.11407702593782613, -0.11774249009105789, -0.13018155201923015, -0.03543854054864929, 0.018965973583764808, 0.1367967632940299, -0.269424679662036, 0.07464956238643851, 0.07323266963777673, 0.09714691102948733, -0.1025143199800622, -0.007504915926865367, -0.07054235604808254, 0.08623585316588084, 0.07170542945197328, -0.0041938458828575, 0.1876897350235214, -0.18208598761905936, -0.05664404948528986, 0.39234660977367747, -0.06096652733855123, -0.18562975693710668, 0.2924974557055637, -0.17388255976487038, -0.10802774639735215, 0.17920555382273917, 0.20176964010610138, 0.10217611500343611, -0.0919307303441645, 0.012317491071244573, -0.06405801538155999, 0.1525243536006053, 0.06127462821990945, -0.041820356676484954, 0.21044546933194927, 0.21883528237772543, 0.13188648714445705, 0.129282888582756, -0.0946651020406767, -0.15307609586391685, -0.271572177623247, -0.11066775241606804, -0.10891933361241637, 0.02273124131813326, -0.054129874625792836, -0.19134331948860267, 0.34226413607207495, 0.15969866916076741, 0.20835573901693055, 0.01858128800847416, 0.20840376403269378, 0.09206592051182376, 0.06515090223834959, 0.08353341445543391, 0.20569130973240665, 0.15421553441258365, 0.15458946920888023, -0.23413995254871456, 0.05551041547902102, 0.015905013676126335] |
707.4186 | Derivative Dispersion Relations for the Amplitude Slopes in pp and
p-pbar Scattering | We extend the use of derivative dispersion relations to the study of slopes
of the real and imaginary amplitudes in pp and p-pbar elastic scattering. The
new relations are tested against the solutions for the amplitudes obtained in
the analysis of the high energy data. Extensions beyond the forward direction
are investigated.
| hep-ph | we extend the use of derivative dispersion relations to the study of slopes of the real and imaginary amplitudes in pp and ppbar elastic scattering the new relations are tested against the solutions for the amplitudes obtained in the analysis of the high energy data extensions beyond the forward direction are investigated | [['we', 'extend', 'the', 'use', 'of', 'derivative', 'dispersion', 'relations', 'to', 'the', 'study', 'of', 'slopes', 'of', 'the', 'real', 'and', 'imaginary', 'amplitudes', 'in', 'pp', 'and', 'ppbar', 'elastic', 'scattering', 'the', 'new', 'relations', 'are', 'tested', 'against', 'the', 'solutions', 'for', 'the', 'amplitudes', 'obtained', 'in', 'the', 'analysis', 'of', 'the', 'high', 'energy', 'data', 'extensions', 'beyond', 'the', 'forward', 'direction', 'are', 'investigated']] | [-0.1356663010083139, 0.1012165394360916, -0.11222709793946706, 0.14911379905131, -0.05867639201908158, -0.0447322830486183, 0.01716925575433729, 0.32914435180674234, -0.24026231600258213, -0.2544002978919217, 0.06335299698940407, -0.34668948436872316, -0.080376964671394, 0.21755288111475798, 0.05969179102864403, 0.10171833131999637, 0.04294549621856557, -0.005592952768963117, -0.08688732723777111, -0.18812613651299706, 0.32328393396276695, 0.0059730279026553035, 0.3010258525251769, 0.06070914391714793, 0.05224793959776154, 0.0961238399747974, -0.09837162249291745, -0.01414535896709332, -0.1323389919438901, 0.15209879241704655, 0.23284435193412578, 0.05044903457522965, 0.13641038766274086, -0.42334552488934535, -0.16527323163329408, 0.08197862330752496, 0.1282511472594566, 0.08363511925563216, -0.0004417237539130908, -0.27749442885844755, 0.11064571099212536, -0.14194051090341347, -0.2022843764235194, -0.06470601372599888, 0.0297927019754962, 0.054190424284360446, -0.22318468088409504, 0.08614892405995096, -0.025375292314073213, 0.082465472469966, -0.10988080256188718, -0.1445452174028525, -0.04708819138333918, 0.06970732897305144, 0.10187528313634595, -0.031226315835598283, 0.07161945339220648, -0.1517777040761967, -0.13871641406932703, 0.3723060302884103, -0.07741585619917785, -0.18331078970088407, 0.18130835792264685, -0.1878400948794129, -0.10313773061184642, 0.1089531962795543, 0.22986825006619954, 0.0649406978000815, -0.16451816513346365, 0.14617557189418362, 0.018410809317943998, 0.11238042480097367, 0.11150129452849236, 0.00970578590596023, 0.12248886713328269, 0.127124563504297, -0.049119417143699065, 0.12361650270983003, -0.1298248148523271, -0.08257938416612048, -0.3778442431827828, -0.13581054579788962, -0.10193718316105123, -0.06386727966645804, -0.10332918334517252, -0.10166029083148505, 0.37548542187477535, 0.13680986012332141, 0.23468089412647083, 0.10552563306499416, 0.2850672349271078, 0.20216516099082163, 0.08559993375988248, 0.06103722660694844, 0.3258908444012587, 0.17959719265882784, 0.14813103143555614, -0.23976232081006926, 0.01095579160699764, 0.026551318614600368] |
707.4187 | Is Small Perfect? Size Limit to Defect Formation in Pyramidal Pt
Nanocontacts | We report high resolution transmission electron microscopy and ab initio
calculation results for the defect formation in Pt nanocontacts (NCs). Our
results show that there is a size limit to the existence of twins (extended
structural defects). Defects are always present but blocked away from the tip
axes. The twins may act as scattering plane, influencing contact electron
transmission for Pt NC at room temperature and Ag/Au NC at low temperature.
| cond-mat.mtrl-sci | we report high resolution transmission electron microscopy and ab initio calculation results for the defect formation in pt nanocontacts ncs our results show that there is a size limit to the existence of twins extended structural defects defects are always present but blocked away from the tip axes the twins may act as scattering plane influencing contact electron transmission for pt nc at room temperature and agau nc at low temperature | [['we', 'report', 'high', 'resolution', 'transmission', 'electron', 'microscopy', 'and', 'ab', 'initio', 'calculation', 'results', 'for', 'the', 'defect', 'formation', 'in', 'pt', 'nanocontacts', 'ncs', 'our', 'results', 'show', 'that', 'there', 'is', 'a', 'size', 'limit', 'to', 'the', 'existence', 'of', 'twins', 'extended', 'structural', 'defects', 'defects', 'are', 'always', 'present', 'but', 'blocked', 'away', 'from', 'the', 'tip', 'axes', 'the', 'twins', 'may', 'act', 'as', 'scattering', 'plane', 'influencing', 'contact', 'electron', 'transmission', 'for', 'pt', 'nc', 'at', 'room', 'temperature', 'and', 'agau', 'nc', 'at', 'low', 'temperature']] | [-0.15006718335633862, 0.16978405191379428, -0.052916883353248866, 0.0097110237627828, 0.03141060265266454, -0.1546986139458145, 0.10191376542288837, 0.45993625417246786, -0.22561780499740386, -0.31085250033459194, 0.02870815323213194, -0.3503801430719839, -0.11057522875899581, 0.15467215212337462, 0.017377116396026293, -0.029400538194032624, 0.014156392818106942, -0.04277674640646913, -0.10947901614889188, -0.1921137380413711, 0.2494940726762034, 0.09110841560374264, 0.30115422859630536, 0.1374067720288122, 0.03369147236734419, 0.07249772084325971, 0.0921228772527735, 0.06346776389556241, -0.17386671871840084, 0.03386068576290994, 0.2844487266011641, -0.056829666338441234, 0.11993692760211482, -0.4626932011156435, -0.21235091861462038, -0.0373935322342834, 0.17763313174273976, 0.1689058805120663, -0.1470054366976731, -0.19240281160619163, 0.10705851257162195, -0.0725724725446231, -0.18443288486188567, -0.035029443548205245, 0.0071230308401962405, 0.006073747289327669, -0.23404299576019108, 0.09176198075669752, 0.02014863052287362, 0.10680022532723739, -0.09482152215992166, -0.1307942417489601, -0.10160113507422658, 0.0845390554307632, -0.0038241859899282877, 0.010791405117217923, 0.25422113113971034, -0.05585627057130488, -0.11169199972138019, 0.3471159381450902, -0.0059850176297862765, -0.0749310059210574, 0.21354521359776107, -0.2222737937995141, -0.088117792113671, 0.1995019085023185, 0.10218702114685635, 0.10887322153791155, -0.09966168392607024, 0.05539891137749704, 0.02682698431464148, 0.20987244695425034, 0.15838691717485937, 0.05673207551844313, 0.2569964085967923, 0.18215025932869125, 0.06169381814690727, 0.05963123897352899, -0.149345208405399, -0.024411964177770515, -0.2411897211847171, -0.15200427447242373, -0.17344202216826116, 0.08741800222073642, -0.09141525226066374, -0.16741439179342296, 0.2757197878598957, 0.12327244813048976, 0.17127370133891073, -0.014369265609224078, 0.26794136935208834, 0.0875449726476111, 0.08190202477886538, 0.0015706668417690924, 0.23762227485979526, 0.15934002016421775, 0.10629994081149638, -0.28421961345945973, 0.05727225671928953, -0.025061432705064054] |
707.4188 | Well-posed initial-boundary value problem for the harmonic Einstein
equations using energy estimates | In recent work, we used pseudo-differential theory to establish conditions
that the initial-boundary value problem for second order systems of wave
equations be strongly well-posed in a generalized sense. The applications
included the harmonic version of the Einstein equations. Here we show that
these results can also be obtained via standard energy estimates, thus
establishing strong well-posedness of the harmonic Einstein problem in the
classical sense.
| gr-qc | in recent work we used pseudodifferential theory to establish conditions that the initialboundary value problem for second order systems of wave equations be strongly wellposed in a generalized sense the applications included the harmonic version of the einstein equations here we show that these results can also be obtained via standard energy estimates thus establishing strong wellposedness of the harmonic einstein problem in the classical sense | [['in', 'recent', 'work', 'we', 'used', 'pseudodifferential', 'theory', 'to', 'establish', 'conditions', 'that', 'the', 'initialboundary', 'value', 'problem', 'for', 'second', 'order', 'systems', 'of', 'wave', 'equations', 'be', 'strongly', 'wellposed', 'in', 'a', 'generalized', 'sense', 'the', 'applications', 'included', 'the', 'harmonic', 'version', 'of', 'the', 'einstein', 'equations', 'here', 'we', 'show', 'that', 'these', 'results', 'can', 'also', 'be', 'obtained', 'via', 'standard', 'energy', 'estimates', 'thus', 'establishing', 'strong', 'wellposedness', 'of', 'the', 'harmonic', 'einstein', 'problem', 'in', 'the', 'classical', 'sense']] | [-0.11698382564425243, 0.05093233381172247, -0.06572335304438391, 0.10055972921492701, -0.08157646539973828, -0.08808288255452433, -0.046061214915067525, 0.28086089976414136, -0.3084809452958518, -0.2294355652323275, 0.143472587037126, -0.23772337173365735, -0.19133661323311654, 0.23507420680570332, -0.066112451798593, 0.11445748667712465, 0.12310737601453156, 0.02737808631112178, -0.10338530187128168, -0.2736436077922752, 0.372111039356131, -0.0031202511357453964, 0.23699915992575837, 0.06847739146288598, 0.08464786135168238, -0.00477232255930589, 0.03292116330880107, 0.0663905915324435, -0.2014362942438421, 0.1375488187292252, 0.27922059887681494, 0.0409205669156191, 0.31207110631194984, -0.43747075153232523, -0.24248390530490063, 0.12282249424606562, 0.10531708074620727, 0.12912157757885076, -0.025695322956325428, -0.3372737583845402, 0.0889586544539215, -0.11983958310729852, -0.2175085185603662, -0.07964515810211499, -0.03532236741121971, 0.04779871525666253, -0.3013488680801608, 0.14601130953903493, 0.09218657869055416, -0.016068568961186844, -0.17387778505993387, -0.043676724727971086, 0.028616085077043284, 0.05127348205441552, 0.05682736408727413, 0.018271662746414993, 0.030767903790216555, -0.10232942489991811, -0.09202727427438015, 0.3883859039933393, -0.14607526770630624, -0.26464574527221196, 0.13112048955747124, -0.13462147031995383, -0.1400682952706561, 0.03807742533161107, 0.15078402769215632, 0.16219781962872454, -0.16571337393851895, 0.12077946353802514, -0.07406703891408115, 0.16897737661687037, 0.08422002690195134, 0.035871787631714884, 0.11852941248622356, 0.07720425727099857, 0.12697326253648056, 0.11633241282437336, 0.029445323556887382, -0.11545249323402955, -0.35267883714175585, -0.16642955961552533, -0.15925000762835032, 0.07881271435634875, -0.06284569111426896, -0.1391625049608675, 0.3303212949822685, 0.20586055371412923, 0.10017002207424605, 0.07565563959140105, 0.22195495958581116, 0.2300138772098404, -0.008250836487577268, 0.07259621380856543, 0.29198394464611105, 0.19606938117155523, 0.17582553540441123, -0.19266887633244606, -0.04011106753376115, 0.19551995345814663] |
707.4189 | Superfluid-Insulator Transition and Fermion Pairing in Bose-Fermi
Mixtures | It is well known that bosons on an optical lattice undergo a second-order
superfluid-insulator transition (SIT) when the lattice potential increases. In
this paper we study SIT when fermions coexist with the bosons. We find that the
critical properties of particle-hole symmetric SIT with dynamical exponent z=1
is modified when fermions are present; it either becomes a fluctuation-driven
first order transition or a different second-order transition. On the other
hand the more generic particle-hole asymmetric (with z=2) SIT is stable against
coupling with fermions. We also discuss pairing interaction between fermions
mediated by quantum critical fluctuations near SIT.
| cond-mat.supr-con cond-mat.str-el | it is well known that bosons on an optical lattice undergo a secondorder superfluidinsulator transition sit when the lattice potential increases in this paper we study sit when fermions coexist with the bosons we find that the critical properties of particlehole symmetric sit with dynamical exponent z1 is modified when fermions are present it either becomes a fluctuationdriven first order transition or a different secondorder transition on the other hand the more generic particlehole asymmetric with z2 sit is stable against coupling with fermions we also discuss pairing interaction between fermions mediated by quantum critical fluctuations near sit | [['it', 'is', 'well', 'known', 'that', 'bosons', 'on', 'an', 'optical', 'lattice', 'undergo', 'a', 'secondorder', 'superfluidinsulator', 'transition', 'sit', 'when', 'the', 'lattice', 'potential', 'increases', 'in', 'this', 'paper', 'we', 'study', 'sit', 'when', 'fermions', 'coexist', 'with', 'the', 'bosons', 'we', 'find', 'that', 'the', 'critical', 'properties', 'of', 'particlehole', 'symmetric', 'sit', 'with', 'dynamical', 'exponent', 'z1', 'is', 'modified', 'when', 'fermions', 'are', 'present', 'it', 'either', 'becomes', 'a', 'fluctuationdriven', 'first', 'order', 'transition', 'or', 'a', 'different', 'secondorder', 'transition', 'on', 'the', 'other', 'hand', 'the', 'more', 'generic', 'particlehole', 'asymmetric', 'with', 'z2', 'sit', 'is', 'stable', 'against', 'coupling', 'with', 'fermions', 'we', 'also', 'discuss', 'pairing', 'interaction', 'between', 'fermions', 'mediated', 'by', 'quantum', 'critical', 'fluctuations', 'near', 'sit']] | [-0.17710700521259853, 0.31360807306532945, -0.05408575685875376, 0.05882534016237347, -0.030933778213303804, -0.25502827039525405, 0.056878739964378505, 0.3714707183879705, -0.19576474856015066, -0.18130718899548662, 0.037860487508159894, -0.3635484914067296, -0.20472348449343092, 0.09409951324318061, 0.10004069408097742, -0.014158533743525646, -0.06079967927463276, 0.035354120922940116, -0.13226800290178697, -0.25642303710005115, 0.3911624908903424, -0.014960291711090855, 0.30737501475960016, 0.06357416587083467, -0.02726937634680344, 0.005525822580164793, 0.12460358630941838, -0.014868479070006584, -0.13904206047612075, -0.011774417521356016, 0.19832717746137452, -0.09263908808898864, 0.18855980053135402, -0.37083767869566775, -0.17557779344140875, 0.12072546134717116, 0.16612709029957803, 0.18218945650198515, -0.11255913244976724, -0.33074904451792947, 0.046910967953427106, -0.16063720808953655, -0.15135047942571037, -0.06279592146640833, -0.04813258606009185, -0.021617262208435153, -0.2569213172953044, 0.10214430529699062, 0.05284441704832122, 0.09686245646669853, -0.017465490966617148, -0.052300703084590484, -0.06336485654619352, 0.07747839930988801, 0.03455983457982312, 0.059896156685403074, 0.11687617807420997, -0.16603394740080574, -0.09459205756762198, 0.42344573584898393, -0.06398792359122664, -0.1340711950229443, 0.2522825678639418, -0.1507788746408662, -0.09508986442916485, 0.1233932052558402, 0.10128264132131613, 0.07770645745307664, -0.07975633183422341, 0.09093902076651551, -0.026283774268338268, 0.19768690417059792, -0.0062498295708198325, 0.054075470631371955, 0.2806590256965434, 0.1681890463746362, 0.09915699786506593, 0.1645790847328406, -0.049579585584032596, -0.18703928031977646, -0.28400776687325263, -0.11082845137749171, -0.1762564379949959, 0.025628779416105578, -0.052820758894085884, -0.1973051704865481, 0.3271390279869036, 0.17296706386176602, 0.22666394257233763, 0.019839218470781128, 0.22759185639704216, 0.18626556074132725, 0.055254684333518454, 0.06401648313016156, 0.28178510499395887, 0.09104737983208758, 0.06868731600175403, -0.27645198318023917, -0.019378796547689304, 0.10121289285717114] |
707.419 | PAH Emission from Ultraluminous Infrared Galaxies | We explore the relationships between the Polycyclic Aromatic Hydrocarbon
(PAH) feature strengths, mid-infrared continuum luminosities, far-infrared
spectral slopes, optical spectroscopic classifications, and silicate optical
depths within a sample of 107 ULIRGs observed with the Infrared Spectrograph on
the Spitzer Space Telescope. The detected 6.2 micron PAH equivalent widths
(EQWs) in the sample span more than two orders of magnitude (0.006-0.8 micron),
and ULIRGs with HII-like optical spectra or steep far-infrared spectral slopes
(S_{25} / S_{60} < 0.2) typically have 6.2 micron PAH EQWs that are half that
of lower-luminosity starbursts. A significant fraction (~40-60%) of HII-like,
LINER-like, and cold ULIRGs have very weak PAH EQWs. Many of these ULIRGs also
have large (tau_{9.7} > 2.3) silicate optical depths. The far-infrared spectral
slope is strongly correlated with PAH EQW, but not with silicate optical depth.
In addition, the PAH EQW decreases with increasing rest-frame 24 micron
luminosity. We argue that this trend results primarily from dilution of the PAH
EQW by continuum emission from dust heated by a compact central source,
probably an AGN. High luminosity, high-redshift sources studied with Spitzer
appear to have a much larger range in PAH EQW than seen in local ULIRGs, which
is consistent with extremely luminous starburst systems being absent at low
redshift, but present at early epochs.
| astro-ph | we explore the relationships between the polycyclic aromatic hydrocarbon pah feature strengths midinfrared continuum luminosities farinfrared spectral slopes optical spectroscopic classifications and silicate optical depths within a sample of 107 ulirgs observed with the infrared spectrograph on the spitzer space telescope the detected 62 micron pah equivalent widths eqws in the sample span more than two orders of magnitude 000608 micron and ulirgs with hiilike optical spectra or steep farinfrared spectral slopes s_25 s_60 02 typically have 62 micron pah eqws that are half that of lowerluminosity starbursts a significant fraction 4060 of hiilike linerlike and cold ulirgs have very weak pah eqws many of these ulirgs also have large tau_97 23 silicate optical depths the farinfrared spectral slope is strongly correlated with pah eqw but not with silicate optical depth in addition the pah eqw decreases with increasing restframe 24 micron luminosity we argue that this trend results primarily from dilution of the pah eqw by continuum emission from dust heated by a compact central source probably an agn high luminosity highredshift sources studied with spitzer appear to have a much larger range in pah eqw than seen in local ulirgs which is consistent with extremely luminous starburst systems being absent at low redshift but present at early epochs | [['we', 'explore', 'the', 'relationships', 'between', 'the', 'polycyclic', 'aromatic', 'hydrocarbon', 'pah', 'feature', 'strengths', 'midinfrared', 'continuum', 'luminosities', 'farinfrared', 'spectral', 'slopes', 'optical', 'spectroscopic', 'classifications', 'and', 'silicate', 'optical', 'depths', 'within', 'a', 'sample', 'of', '107', 'ulirgs', 'observed', 'with', 'the', 'infrared', 'spectrograph', 'on', 'the', 'spitzer', 'space', 'telescope', 'the', 'detected', '62', 'micron', 'pah', 'equivalent', 'widths', 'eqws', 'in', 'the', 'sample', 'span', 'more', 'than', 'two', 'orders', 'of', 'magnitude', '000608', 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'an', 'agn', 'high', 'luminosity', 'highredshift', 'sources', 'studied', 'with', 'spitzer', 'appear', 'to', 'have', 'a', 'much', 'larger', 'range', 'in', 'pah', 'eqw', 'than', 'seen', 'in', 'local', 'ulirgs', 'which', 'is', 'consistent', 'with', 'extremely', 'luminous', 'starburst', 'systems', 'being', 'absent', 'at', 'low', 'redshift', 'but', 'present', 'at', 'early', 'epochs']] | [0.033188148244770004, 0.11608272518492742, -0.02562061958194931, 0.10901507426892376, -0.006213664499016992, -0.09825800002242129, 0.006777098537074033, 0.5939256211445816, -0.093410987160641, -0.32389655342811474, -0.020020237935291927, -0.3264588023408525, 0.028259409029162737, 0.12295057077635603, -0.030810827211362135, -0.07748810059485445, -0.03317377079674155, -0.2798704230609003, 0.019641453786688443, -0.29606021092169815, 0.2521148091688266, 0.09838267913367149, 0.19982053700762525, -0.006680271631007753, 0.0029913327872645164, -0.1857917012696285, -0.13119744137407546, -0.028298060267017526, 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707.4191 | Neutron Form Factor from Neutrino-Nucleus Coherent Elastic Scattering | We analyze the prospect of measuring the neutron form factor of a nucleus
through the detection of neutrino-nucleus coherent elastic scattering. We
predict numbers of events in a liquid noble nuclear recoil detector at a
stopped pion neutrino source. We discuss the precision required to distinguish
between different theoretical models for the form factor.
| hep-ph nucl-th | we analyze the prospect of measuring the neutron form factor of a nucleus through the detection of neutrinonucleus coherent elastic scattering we predict numbers of events in a liquid noble nuclear recoil detector at a stopped pion neutrino source we discuss the precision required to distinguish between different theoretical models for the form factor | [['we', 'analyze', 'the', 'prospect', 'of', 'measuring', 'the', 'neutron', 'form', 'factor', 'of', 'a', 'nucleus', 'through', 'the', 'detection', 'of', 'neutrinonucleus', 'coherent', 'elastic', 'scattering', 'we', 'predict', 'numbers', 'of', 'events', 'in', 'a', 'liquid', 'noble', 'nuclear', 'recoil', 'detector', 'at', 'a', 'stopped', 'pion', 'neutrino', 'source', 'we', 'discuss', 'the', 'precision', 'required', 'to', 'distinguish', 'between', 'different', 'theoretical', 'models', 'for', 'the', 'form', 'factor']] | [-0.07482113481361281, 0.21444578908590806, -0.08545635187894934, 0.1567020770162344, -0.0009752293462278667, -0.06672639178146643, 0.0954203807093479, 0.3455380170985504, -0.24585108661644714, -0.2921045955132555, -0.03597240237501898, -0.3509108277762102, -0.018290966654334356, 0.1885506042443147, 0.08499949350435701, 0.045985904073825586, 0.05011475488922938, 0.04470769800590696, -0.12395361772548684, -0.13175982309513967, 0.32076274862305987, 0.0998946710024029, 0.2454860456529315, 0.11763661783590107, 0.14144911567025162, 0.03180371938031857, -0.06459899504531037, -0.07445388671045226, -0.12074185999248314, 0.08840538300056425, 0.28716035385777006, 0.11082054736713569, 0.13614428619405738, -0.4713435527627115, -0.1675897216062165, 0.13756878004857787, 0.08812979515695823, 0.11573615425300819, -0.10049296232561271, -0.28429129868055936, 0.028606908085445564, -0.25974606046522103, -0.16503793631542335, -0.06229612097592541, -7.908600727441135e-05, 0.010368678106007993, -0.24883611358840158, 0.07490118220448494, -0.04257878050622013, -0.017969655666362355, -0.061912707070371616, -0.15190879285068218, 0.12547464709280542, 0.09224207569086165, 0.06396136826111211, -0.011656622169539332, 0.22081933916908586, -0.24029494601267357, -0.09615407335675424, 0.381645899904133, -0.05574822557348482, -0.11671259392190862, 0.12484771722099847, -0.22764883224886875, -0.07374451081246931, 0.17920489571298714, 0.25291995241962095, 0.0801878714658044, -0.1686555138202729, -0.04561411917071651, -0.030276900564786047, 0.19012100946727312, 0.11661911298762317, 0.0196394893185546, 0.25998382949856697, 0.3022110949235934, -0.026801907552268217, 0.06069357024022826, -0.21963271246878086, -0.003339259126396091, -0.3466659336506079, -0.12995788294615018, -0.0739908588498279, 0.08931676909344753, -0.03574847079020132, -0.09570728814988225, 0.3627785190474242, 0.07576894180642234, 0.18799715801745792, -0.029712147157018382, 0.2883330412484981, 0.05154045462539351, 0.037247345284278574, 0.004564010512290729, 0.3512318276765722, 0.18395132901302227, 0.0379628325484831, -0.28851381061529674, 0.06029376442785616, 0.028433402819145057] |
707.4192 | Improved Lewenstein model for high-order harmonic generation of atoms
and molecules with scattering wavefunctions | We demonstrate a simple method to improve the Lewenstein model for the
description of high-order harmonic generation (HHG). It is shown that HHG
spectra can be expressed as the product of a returning electron wave packet and
the photo-recombination cross sections, where the former can be extracted from
the Lewenstein model. By replacing plane waves with scattering waves in the
calculation of recombination matrix elements, we showed that the resulting HHG
spectra agree well with those from solving the time-dependent Schr\"odinger
equation. The improved model can be used for quantitative calculations of high
harmonics generated by molecules.
| physics.atom-ph | we demonstrate a simple method to improve the lewenstein model for the description of highorder harmonic generation hhg it is shown that hhg spectra can be expressed as the product of a returning electron wave packet and the photorecombination cross sections where the former can be extracted from the lewenstein model by replacing plane waves with scattering waves in the calculation of recombination matrix elements we showed that the resulting hhg spectra agree well with those from solving the timedependent schrodinger equation the improved model can be used for quantitative calculations of high harmonics generated by molecules | [['we', 'demonstrate', 'a', 'simple', 'method', 'to', 'improve', 'the', 'lewenstein', 'model', 'for', 'the', 'description', 'of', 'highorder', 'harmonic', 'generation', 'hhg', 'it', 'is', 'shown', 'that', 'hhg', 'spectra', 'can', 'be', 'expressed', 'as', 'the', 'product', 'of', 'a', 'returning', 'electron', 'wave', 'packet', 'and', 'the', 'photorecombination', 'cross', 'sections', 'where', 'the', 'former', 'can', 'be', 'extracted', 'from', 'the', 'lewenstein', 'model', 'by', 'replacing', 'plane', 'waves', 'with', 'scattering', 'waves', 'in', 'the', 'calculation', 'of', 'recombination', 'matrix', 'elements', 'we', 'showed', 'that', 'the', 'resulting', 'hhg', 'spectra', 'agree', 'well', 'with', 'those', 'from', 'solving', 'the', 'timedependent', 'schrodinger', 'equation', 'the', 'improved', 'model', 'can', 'be', 'used', 'for', 'quantitative', 'calculations', 'of', 'high', 'harmonics', 'generated', 'by', 'molecules']] | [-0.03356726165289616, 0.13670240988302015, -0.07166735292172309, 0.05263368617479219, 0.006154345334075468, -0.07998151661463312, -0.03699301441497717, 0.38052001333382635, -0.268790384826548, -0.27071925113457684, -0.0025134434810714775, -0.31908367136397314, -0.12484908228519268, 0.2437146841212339, 0.04815789941967148, 0.07391375453168161, 0.11086914076748275, -0.015839070021702917, -0.02339741322163915, -0.16257034991051733, 0.26161336155665904, 0.08339268454475347, 0.25651721143615, 0.08386871308693182, 0.06384438081385241, 0.02610803636981501, -0.009699713592369532, -2.6633175685233675e-05, -0.07693122959405918, 0.13004837551192602, 0.257227652456573, 0.08697071970565264, 0.15619428545121372, -0.44472770245035287, -0.2635607465587979, 0.02794010785393916, 0.16066344454104425, 0.17500089707102665, -0.03627406375617096, -0.30226849859397975, 0.019871230938078202, -0.17868911786024103, -0.1251115124077373, -0.10610591203271959, -0.043640328321567515, 0.08611860368208787, -0.3238031719139172, 0.08427552858333957, 0.025673156677380436, -0.018357470903510212, -0.07752656817589838, -0.09050451570488129, -0.07357851125194316, 0.08714488051236444, -0.005525967390660542, 0.05072908060260348, 0.09973371120052144, -0.08264325569700642, -0.12034464517089817, 0.4604432121610519, -0.147346325199475, -0.18960503954440355, 0.09654289087971922, -0.1941446622776002, -0.0660990663280845, 0.19317024395100235, 0.14793584747095928, 0.14895941147139086, -0.11202694294186905, 0.047631037896186994, -0.03575468328334367, 0.16317567396332922, 0.1296068713760253, -0.0032688936209018084, 0.14953331031942182, 0.11724177560260154, -0.024543585678197675, 0.09758132932942898, -0.06176637659406232, -0.057581518229442775, -0.2635091977174749, -0.11111892907659418, -0.22115134574189668, 0.05040436517492239, -0.04983602745981153, -0.1306918316251315, 0.4208985064562756, 0.1052921849048514, 0.18043143487506613, 0.012951007976974408, 0.3069444985426578, 0.2517672293644264, 0.05544387934172584, 0.029681209196365372, 0.248818708343681, 0.1658731482049316, 0.06148355010628086, -0.23744928028756157, 0.04508392016893042, 0.10736719034516166] |
707.4193 | On the interaction of Jupiter's Great Red Spot and zonal jet streams | In this paper, Jupiter's Great Red Spot (GRS) is used to determine properties
of the Jovian atmosphere that cannot otherwise be found. These properties
include the potential vorticity of the GRS and its neighboring jet streams, the
shear imposed on the GRS by the jet streams, and the vertical entropy gradient
(i.e., Rossby deformation radius). The cloud cover of the GRS, which is often
used to define the GRS's area and aspect ratio, is found to differ
significantly from the region of the GRS's potential vorticity anomaly. The
westward-going jet stream to the north of the GRS and the eastward-going jet
stream to its south are each found to have a large potential vorticity
``jump''. The jumps have opposite sign and as a consequence of their
interaction with the GRS, the shear imposed on the GRS is reduced. The
east-west to north-south aspect ratio of the GRS's potential vorticity anomaly
depends on the ratio of the imposed shear to the strength of the anomaly. The
aspect ratio is found to be $\approx$2:1, but without the opposing jumps it
would be much greater. The GRS's high-speed collar and quiescent interior
require that the potential vorticity in the interior be approximately half that
in the collar. No other persistent geophysical vortex has a significant minimum
of potential vorticity in its interior and laboratory vortices with such a
minimum are unstable.
| physics.flu-dyn physics.ao-ph | in this paper jupiters great red spot grs is used to determine properties of the jovian atmosphere that cannot otherwise be found these properties include the potential vorticity of the grs and its neighboring jet streams the shear imposed on the grs by the jet streams and the vertical entropy gradient ie rossby deformation radius the cloud cover of the grs which is often used to define the grss area and aspect ratio is found to differ significantly from the region of the grss potential vorticity anomaly the westwardgoing jet stream to the north of the grs and the eastwardgoing jet stream to its south are each found to have a large potential vorticity jump the jumps have opposite sign and as a consequence of their interaction with the grs the shear imposed on the grs is reduced the eastwest to northsouth aspect ratio of the grss potential vorticity anomaly depends on the ratio of the imposed shear to the strength of the anomaly the aspect ratio is found to be approx21 but without the opposing jumps it would be much greater the grss highspeed collar and quiescent interior require that the potential vorticity in the interior be approximately half that in the collar no other persistent geophysical vortex has a significant minimum of potential vorticity in its interior and laboratory vortices with such a minimum are unstable | [['in', 'this', 'paper', 'jupiters', 'great', 'red', 'spot', 'grs', 'is', 'used', 'to', 'determine', 'properties', 'of', 'the', 'jovian', 'atmosphere', 'that', 'can', 'not', 'otherwise', 'be', 'found', 'these', 'properties', 'include', 'the', 'potential', 'vorticity', 'of', 'the', 'grs', 'and', 'its', 'neighboring', 'jet', 'streams', 'the', 'shear', 'imposed', 'on', 'the', 'grs', 'by', 'the', 'jet', 'streams', 'and', 'the', 'vertical', 'entropy', 'gradient', 'ie', 'rossby', 'deformation', 'radius', 'the', 'cloud', 'cover', 'of', 'the', 'grs', 'which', 'is', 'often', 'used', 'to', 'define', 'the', 'grss', 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707.4194 | Tests of non-standard electroweak couplings of right-handed quarks | The standard model can be interpreted as the leading order of a Low-Energy
Effective Theory (LEET) invariant under a higher non linearly realized symmetry
$S_{nat}\supset SU(2)_W \times U(1)_Y$ equipped with a systematic power
counting. Within the minimal version of this ``not quite decoupling'' LEET, the
dominant non-standard effect appears at next-to-leading order (NLO) and is a
modification of the couplings of fermions to W and Z. In particular, the
coupling of right-handed quarks to Z is modified and a direct coupling of
right-handed quarks to W emerges. Charged right-handed lepton currents are
forbidden by an additional discrete symmetry in the lepton sector originally
designed to suppress Dirac neutrino masses. A complete NLO analysis of
experimental constraints on these modified couplings is presented. Concerning
couplings of light quarks, the interface of the electroweak tests with QCD
aspects is discussed in detail.
| hep-ph hep-ex | the standard model can be interpreted as the leading order of a lowenergy effective theory leet invariant under a higher non linearly realized symmetry s_natsupset su2_w times u1_y equipped with a systematic power counting within the minimal version of this not quite decoupling leet the dominant nonstandard effect appears at nexttoleading order nlo and is a modification of the couplings of fermions to w and z in particular the coupling of righthanded quarks to z is modified and a direct coupling of righthanded quarks to w emerges charged righthanded lepton currents are forbidden by an additional discrete symmetry in the lepton sector originally designed to suppress dirac neutrino masses a complete nlo analysis of experimental constraints on these modified couplings is presented concerning couplings of light quarks the interface of the electroweak tests with qcd aspects is discussed in detail | [['the', 'standard', 'model', 'can', 'be', 'interpreted', 'as', 'the', 'leading', 'order', 'of', 'a', 'lowenergy', 'effective', 'theory', 'leet', 'invariant', 'under', 'a', 'higher', 'non', 'linearly', 'realized', 'symmetry', 's_natsupset', 'su2_w', 'times', 'u1_y', 'equipped', 'with', 'a', 'systematic', 'power', 'counting', 'within', 'the', 'minimal', 'version', 'of', 'this', 'not', 'quite', 'decoupling', 'leet', 'the', 'dominant', 'nonstandard', 'effect', 'appears', 'at', 'nexttoleading', 'order', 'nlo', 'and', 'is', 'a', 'modification', 'of', 'the', 'couplings', 'of', 'fermions', 'to', 'w', 'and', 'z', 'in', 'particular', 'the', 'coupling', 'of', 'righthanded', 'quarks', 'to', 'z', 'is', 'modified', 'and', 'a', 'direct', 'coupling', 'of', 'righthanded', 'quarks', 'to', 'w', 'emerges', 'charged', 'righthanded', 'lepton', 'currents', 'are', 'forbidden', 'by', 'an', 'additional', 'discrete', 'symmetry', 'in', 'the', 'lepton', 'sector', 'originally', 'designed', 'to', 'suppress', 'dirac', 'neutrino', 'masses', 'a', 'complete', 'nlo', 'analysis', 'of', 'experimental', 'constraints', 'on', 'these', 'modified', 'couplings', 'is', 'presented', 'concerning', 'couplings', 'of', 'light', 'quarks', 'the', 'interface', 'of', 'the', 'electroweak', 'tests', 'with', 'qcd', 'aspects', 'is', 'discussed', 'in', 'detail']] | [-0.14393634910246345, 0.2900390013904359, -0.04481308301240742, 0.146705060975338, -0.0845769721203946, -0.17244225150148432, 0.028468948272190882, 0.30904660874093287, -0.2002226134105552, -0.2649083647629072, 0.008621319007001174, -0.28995845175395124, -0.00012810238831334836, 0.07750521406444232, 0.04016893905614295, 0.055984496768805195, -0.009861935995411958, 0.006115303468629182, -0.09783043909362323, -0.25043462131092015, 0.27554152772942786, 0.03652982116825946, 0.21858607315485157, 0.11399966957870027, 0.07680812539706985, 0.00426631212810711, -0.03172816781045722, -0.060076478399711544, -0.073529191475978, 0.056143742979323265, 0.1709975301683378, -0.02922031345020095, 0.09728406566335894, -0.3716014862435756, -0.1305298176158568, 0.10772966133537802, 0.12924559952074782, 0.1050450869085495, -0.0696256081827015, -0.3120856847582224, 0.10879578425971081, -0.22160406265635607, -0.1546927648328459, -0.08094034971396703, -0.0871888754433758, -0.1031333767112157, -0.3584032712551169, 0.08267905701537241, 0.0006294801040626258, 0.003769047464505374, 0.07512759575754296, -0.139755112695233, -0.09785689567525623, 0.003906245001678844, 0.17376452326195033, 0.03036931108535944, 0.11980614618552353, -0.18110484194861418, -0.17673909727805595, 0.4714897942910199, -0.112121475808969, -0.20101967407725482, 0.1435800926130024, -0.12837625832611815, -0.15586699138348586, 0.12120110675585356, 0.18392297763230026, 0.08754017169163529, -0.1856623948987225, 0.21241415080173853, -0.04716694129215513, 0.17189019999513738, 0.05685411888407543, 0.05042591488337238, 0.22660907303324815, 0.17295235516536955, 0.047427260766238, 0.03521423779424655, -0.0045128773567903275, -0.08843136823521726, -0.4374708909903177, -0.10676444979826752, -0.08902008624968501, 0.09090051140308317, -0.09717403551119316, -0.11062553111905996, 0.44242042883319393, 0.1026350744336629, 0.19355358318727223, -0.00320643412364687, 0.275712343455433, 0.1269055738259549, 0.1222148734084565, -0.0019529018594662277, 0.2875226787860981, 0.20369604854549703, 0.08144190251532434, -0.25260041912066206, -0.03573100114067038, 0.11152731651848972] |
707.4195 | Experiments with Probabilistic Quantum Auctions | We describe human-subject laboratory experiments on probabilistic auctions
based on previously proposed auction protocols involving the simulated
manipulation and communication of quantum states. These auctions are
probabilistic in determining which bidder wins, or having no winner, rather
than always having the highest bidder win. Comparing two quantum protocols in
the context of first-price sealed bid auctions, we find the one predicted to be
superior by game theory also performs better experimentally. We also compare
with a conventional first price auction, which gives higher performance. Thus
to provide benefits, the quantum protocol requires more complex economic
scenarios such as maintaining privacy of bids over a series of related auctions
or involving allocative externalities.
| quant-ph | we describe humansubject laboratory experiments on probabilistic auctions based on previously proposed auction protocols involving the simulated manipulation and communication of quantum states these auctions are probabilistic in determining which bidder wins or having no winner rather than always having the highest bidder win comparing two quantum protocols in the context of firstprice sealed bid auctions we find the one predicted to be superior by game theory also performs better experimentally we also compare with a conventional first price auction which gives higher performance thus to provide benefits the quantum protocol requires more complex economic scenarios such as maintaining privacy of bids over a series of related auctions or involving allocative externalities | [['we', 'describe', 'humansubject', 'laboratory', 'experiments', 'on', 'probabilistic', 'auctions', 'based', 'on', 'previously', 'proposed', 'auction', 'protocols', 'involving', 'the', 'simulated', 'manipulation', 'and', 'communication', 'of', 'quantum', 'states', 'these', 'auctions', 'are', 'probabilistic', 'in', 'determining', 'which', 'bidder', 'wins', 'or', 'having', 'no', 'winner', 'rather', 'than', 'always', 'having', 'the', 'highest', 'bidder', 'win', 'comparing', 'two', 'quantum', 'protocols', 'in', 'the', 'context', 'of', 'firstprice', 'sealed', 'bid', 'auctions', 'we', 'find', 'the', 'one', 'predicted', 'to', 'be', 'superior', 'by', 'game', 'theory', 'also', 'performs', 'better', 'experimentally', 'we', 'also', 'compare', 'with', 'a', 'conventional', 'first', 'price', 'auction', 'which', 'gives', 'higher', 'performance', 'thus', 'to', 'provide', 'benefits', 'the', 'quantum', 'protocol', 'requires', 'more', 'complex', 'economic', 'scenarios', 'such', 'as', 'maintaining', 'privacy', 'of', 'bids', 'over', 'a', 'series', 'of', 'related', 'auctions', 'or', 'involving', 'allocative', 'externalities']] | [-0.10388901043812179, 0.02575060467331371, -0.08786968322653722, 0.10738363435042889, -0.10894326927206878, -0.29349849906118053, 0.16254253953957232, 0.4346201975796638, -0.23349388090926887, -0.3121427070044384, 0.05953394108759572, -0.28412469115573913, -0.1284157389059796, 0.21037859736991646, -0.1213827560880288, 0.053054342221003026, 0.044997213435603305, 0.043763635478691346, 0.05349823903608402, -0.35895963199436665, 0.277320606550867, 0.08077019674133876, 0.27933014957566876, 0.01340981960467096, 0.08013092987156208, 0.021778768681023002, 0.029328404850925187, -0.0030570025888404678, -0.13524765785717005, 0.12204741071816118, 0.314495876231896, 0.17475819606001355, 0.33470769729631555, -0.44922350346626316, -0.12927852961833455, 0.14769872702267353, 0.06588847607677703, 0.04860005246467024, -0.05692693992295972, -0.22877887075134953, 0.060084356693550944, -0.25432052117165377, 0.022228905694126815, -0.10722324982218977, -0.10326605543793578, -0.0198543192085968, -0.32964129553043414, 0.022570223923269492, 0.0025396480466172633, 0.05004946944869256, -0.05417248674867941, -0.12853868250177974, 0.0025826152788275586, 0.14047476618699356, 0.018932461734428734, -0.06789522640610812, 0.14496059003535525, -0.16333598250639625, -0.33227783321802107, 0.4472148517712152, 0.0012746719474827323, -0.1415632545462618, 0.14375111810971117, -0.09724035287425588, -0.11432873285126074, 0.08492035873600148, 0.13317029066716454, 0.12025355386763945, -0.09293623876458566, 0.017406750650739662, -0.10984280844526698, 0.15820617641605036, 0.10676743159586165, 0.08047902357793646, 0.13373689932840144, 0.16309980738567123, 0.14859792293282226, 0.12141913592911026, 0.03833474733151628, -0.24029782863258983, -0.19551886897534132, -0.15184287351023937, -0.15727647240731, 0.06617487674105048, -0.09721411359259946, -0.13656589420861565, 0.3905916661689324, 0.15056353779177048, 0.12143188131449278, 0.10328859346295108, 0.35426294891346644, 0.06055461684653502, -0.00037136604078114033, 0.09337106796114572, 0.21538302110379196, -0.029210644805321602, 0.1377764412266385, -0.1491038400261979, 0.22912628287615786, 0.005981417489238083] |
707.4196 | A short Brownian motion proof of the Riemann hypothesis | We give a short probabilistic (a Brownian motion) proof of the Riemann
hypothesis based on some surprising, unexpected and deep algebraic conjecture
(MAC in short) concerning the relation between the Riemann zeta $\xi$ and a
trivial zeta $\zeta_{t}$. That algebraic conjecture was firstly discovered and
formulated in [MA]
| math.GM | we give a short probabilistic a brownian motion proof of the riemann hypothesis based on some surprising unexpected and deep algebraic conjecture mac in short concerning the relation between the riemann zeta xi and a trivial zeta zeta_t that algebraic conjecture was firstly discovered and formulated in ma | [['we', 'give', 'a', 'short', 'probabilistic', 'a', 'brownian', 'motion', 'proof', 'of', 'the', 'riemann', 'hypothesis', 'based', 'on', 'some', 'surprising', 'unexpected', 'and', 'deep', 'algebraic', 'conjecture', 'mac', 'in', 'short', 'concerning', 'the', 'relation', 'between', 'the', 'riemann', 'zeta', 'xi', 'and', 'a', 'trivial', 'zeta', 'zeta_t', 'that', 'algebraic', 'conjecture', 'was', 'firstly', 'discovered', 'and', 'formulated', 'in', 'ma']] | [-0.27803737912715104, 0.0676870962488465, -0.2108273554670935, 0.1453308670509917, -0.12246978122857399, -0.21386498495121486, 0.07191502236916374, 0.2856171589034299, -0.27939090862249333, -0.23519600473809987, 0.05483646787373194, -0.1594143881520722, -0.2315003440792983, 0.20447786641307175, -0.10266636108281091, 0.04234190900751855, 0.02540503186173737, 0.028174609193229116, -0.0847520265330483, -0.29942137028168264, 0.32980306291331846, -0.030945324557857628, 0.19492078428932777, 0.16226678637516065, 0.1336085368093336, 0.04155142674183784, -0.059650429020014904, -0.036692534010702126, -0.16395755114672284, 0.11911522794980556, 0.22705872112419456, 0.0653673385871419, 0.2357395509413133, -0.39601209782995284, -0.1610958642171075, 0.068111565138679, 0.10599847669861144, -0.0404932942862312, -0.005714856507741691, -0.3036495166597888, 0.09251160009686525, -0.12263061455450952, -0.1424259810592048, 0.016059029342917103, 0.07772185207189371, 0.030284933532432962, -0.19046518410323188, 0.09702545385031651, 0.13836857839487493, 0.1279223060895068, -0.07429461924281593, -0.12990663032299685, 0.054436634915570416, -0.0059200290027850615, 0.1271164186182432, 0.07587145494956833, 0.005749835373232297, -0.08357945951865986, -0.10750597688214232, 0.29281178566937643, -0.06821035936203164, -0.17562390017944077, 0.17488162169562807, -0.0975181933414812, -0.23275715213579437, 0.10093530974821381, 0.07933094206964597, 0.13649170777838057, -0.07373746631977458, 0.1347071812451759, -0.15210705978097394, 0.10555225394394559, 0.18058396994213885, -0.04156303652416682, 0.1967731579206884, 0.1031483110661308, -0.023544514808842603, 0.14292999578174204, -0.046873433452371195, -0.09873748433892615, -0.36146167836462456, -0.22474901570240036, -0.1642055242943267, 0.17461852303919537, -0.11344019334167872, -0.20488760445732623, 0.34038395108655095, 0.11229534206601481, 0.18287926285605258, 0.18660093234211672, 0.20843395746002594, 0.11638832008854176, -0.02832705819552454, 0.03680366937381526, 0.1419930847375023, 0.260474465341152, 0.0813696019758936, -0.11181956921548893, 0.07994124777421045, 0.20836993214713098] |
707.4197 | Ascent of module structures, vanishing of Ext, and extended modules | Let $(R,\m)$ and $(S,\n)$ be commutative Noetherian local rings, and let
$\phi:R\to S$ be a flat local homomorphism such that $\m S = \n$ and the
induced map on residue fields $R/\m \to S/\n$ is an isomorphism. Given a
finitely generated $R$-module $M$, we show that $M$ has an $S$-module structure
compatible with the given $R$-module structure if and only if $\Ext^i_R(S,M)=0$
for each $i\ge 1$.
We say that an $S$-module $N$ is {\it extended} if there is a finitely
generated $R$-module $M$ such that $N\cong S\otimes_RM$. Given a short exact
sequence $0 \to N_1\to N \to N_2\to 0$ of finitely generated $S$-modules, with
two of the three modules $N_1,N,N_2$ extended, we obtain conditions forcing the
third module to be extended. We show that every finitely generated module over
the Henselization of $R$ is a direct summand of an extended module, but that
the analogous result fails for the $\m$-adic completion.
| math.AC | let rm and sn be commutative noetherian local rings and let phirto s be a flat local homomorphism such that m s n and the induced map on residue fields rm to sn is an isomorphism given a finitely generated rmodule m we show that m has an smodule structure compatible with the given rmodule structure if and only if exti_rsm0 for each ige 1 we say that an smodule n is it extended if there is a finitely generated rmodule m such that ncong sotimes_rm given a short exact sequence 0 to n_1to n to n_2to 0 of finitely generated smodules with two of the three modules n_1nn_2 extended we obtain conditions forcing the third module to be extended we show that every finitely generated module over the henselization of r is a direct summand of an extended module but that the analogous result fails for the madic completion | [['let', 'rm', 'and', 'sn', 'be', 'commutative', 'noetherian', 'local', 'rings', 'and', 'let', 'phirto', 's', 'be', 'a', 'flat', 'local', 'homomorphism', 'such', 'that', 'm', 's', 'n', 'and', 'the', 'induced', 'map', 'on', 'residue', 'fields', 'rm', 'to', 'sn', 'is', 'an', 'isomorphism', 'given', 'a', 'finitely', 'generated', 'rmodule', 'm', 'we', 'show', 'that', 'm', 'has', 'an', 'smodule', 'structure', 'compatible', 'with', 'the', 'given', 'rmodule', 'structure', 'if', 'and', 'only', 'if', 'exti_rsm0', 'for', 'each', 'ige', '1', 'we', 'say', 'that', 'an', 'smodule', 'n', 'is', 'it', 'extended', 'if', 'there', 'is', 'a', 'finitely', 'generated', 'rmodule', 'm', 'such', 'that', 'ncong', 'sotimes_rm', 'given', 'a', 'short', 'exact', 'sequence', '0', 'to', 'n_1to', 'n', 'to', 'n_2to', '0', 'of', 'finitely', 'generated', 'smodules', 'with', 'two', 'of', 'the', 'three', 'modules', 'n_1nn_2', 'extended', 'we', 'obtain', 'conditions', 'forcing', 'the', 'third', 'module', 'to', 'be', 'extended', 'we', 'show', 'that', 'every', 'finitely', 'generated', 'module', 'over', 'the', 'henselization', 'of', 'r', 'is', 'a', 'direct', 'summand', 'of', 'an', 'extended', 'module', 'but', 'that', 'the', 'analogous', 'result', 'fails', 'for', 'the', 'madic', 'completion']] | [-0.18917898365341695, 0.11175680795349763, -0.0667989746046563, 0.021227259205059253, -0.04113657477460543, -0.2118061012685454, -0.09427021820172538, 0.40150829567573965, -0.4124033856852394, -0.17362833764552002, 0.0937234765668917, -0.25170263905440354, -0.08933738178812847, 0.18559168652993524, -0.08790454166915475, -0.11488955807079845, 0.07307897471279527, 0.1527588676609513, -0.02344325024751015, -0.306252843852336, 0.3428483608230535, -0.007869790301709954, 0.14970355265541002, 0.017523766589066427, 0.1547974522222325, -0.001949995292104884, -0.002277791060300337, 0.03900724941114378, -0.17779564009419524, 0.04769867303871757, 0.3069237188772402, 0.13507879783153637, 0.22355451680939747, -0.357666501363686, -0.11010117942674293, 0.25869610768212525, 0.13464630235426334, -0.047577690578893654, -0.05001439523847592, -0.24639974843173856, 0.2621687480326121, -0.22447391957959756, -0.10252406712323944, -0.011142619115869619, 0.15963418564125378, -0.013638498455596467, -0.35469954141121385, -0.04896912934620761, 0.12574331888350165, 0.09498884034110233, -0.040017468159526795, -0.05794507463805429, -0.09974960774545455, 0.06842680935127039, -0.0514523083838867, 0.0731885648953418, 0.08988025950990657, -0.042734299450077944, -0.07582612870545644, 0.3450767924142484, -0.12457708078889279, -0.2011721750766608, 0.1470207569962238, -0.18836213406434077, -0.10489242309833774, 0.13954937198690864, -0.03467150449675197, 0.1600361846689743, -0.009155446224516103, 0.23306878542482284, -0.19370667142276135, 0.162876740078597, 0.07127466310824578, -0.010642875283439126, 0.15917254168339745, 0.08689567270468818, 0.10205815288160618, 0.07649046819844646, 0.014879031219202766, 0.12236429979546098, -0.36970672477036715, -0.18524303203109108, -0.19337236550584042, 0.1975930550041893, -0.07188309725400661, -0.13215399836836797, 0.3627590484943034, 0.10232462375845192, 0.19476421422061524, 0.09383162925304431, 0.22415893451155475, 0.0427726115190631, 0.06059372001739879, 0.10966755669667488, 0.04052970767952502, 0.19614128157263622, -0.06709434896038147, -0.11305485710747437, -0.01593796745227236, 0.14162121382024553] |
707.4198 | Reductionism, emergence, and levels of abstractions | Can there be independent higher level laws of nature if everything is
reducible to the fundamental laws of physics? The computer science notion of
level of abstraction explains why there can -- illustrating how computational
thinking can solve one of philosophy's most vexing problems.
| cs.OH | can there be independent higher level laws of nature if everything is reducible to the fundamental laws of physics the computer science notion of level of abstraction explains why there can illustrating how computational thinking can solve one of philosophys most vexing problems | [['can', 'there', 'be', 'independent', 'higher', 'level', 'laws', 'of', 'nature', 'if', 'everything', 'is', 'reducible', 'to', 'the', 'fundamental', 'laws', 'of', 'physics', 'the', 'computer', 'science', 'notion', 'of', 'level', 'of', 'abstraction', 'explains', 'why', 'there', 'can', 'illustrating', 'how', 'computational', 'thinking', 'can', 'solve', 'one', 'of', 'philosophys', 'most', 'vexing', 'problems']] | [-0.0861516370925875, 0.1578463865887551, -0.12483069114387035, 0.12280555376838449, -0.15478984655124978, -0.21147754154212417, 0.011889272724233922, 0.25729069287522827, -0.3695343831648296, -0.38313510548323393, 0.06439189790260225, -0.21246106354963212, -0.21155121567703428, 0.22391198916981617, -0.16509421050016368, -0.007348111639398017, 0.014167849695132602, 0.01692017393984965, -0.03548836457498726, -0.2834226776446615, 0.2914649727089064, 0.033795789283301146, 0.2540187779592261, 0.10742304756283938, 0.1181984797031397, -0.07406454078764432, 0.01079713893566458, 0.031077035048621752, -0.0694497567158015, 0.15004061883969588, 0.41694426997786477, 0.2615230714725926, 0.3530520366593486, -0.4450507829675362, -0.18055271001399628, 0.12523201972223996, 0.17972792893193573, 0.07702883895087455, 0.0016227977660795052, -0.16963876635279684, 0.08876691255274982, -0.09973058913878742, -0.19103133665131672, -0.08540635334239119, 0.013343575543590955, -0.042922693326891886, -0.10378731858162653, 0.0490360732766844, 0.07841828560811423, 0.06894552840718202, 0.009590930554882757, -0.11467392254798185, -0.014543818526103027, 0.1578446364229811, 0.05180042068795523, -0.0384387325958371, 0.13819219045607106, -0.1933166591140131, -0.19990396601635785, 0.4929368542063804, 0.05030195245386234, -0.20561175877671867, 0.2422264087058249, -0.14953947295656517, -0.21599043417899383, 0.09347622120930325, 0.12548670335949974, -0.006199388454357783, -0.09515865534056156, 0.139203999601748, -0.042671023468886106, 0.23437083902813138, 0.06412834880341377, 0.003963691271131947, 0.24721815220878593, 0.18475738205459147, 0.053025273650529836, 0.05385005737688126, 0.07895517123619183, -0.15651209807644287, -0.3143470489553043, -0.13204578962177038, -0.15034510024512807, 0.08555695478848759, -0.042429908977023194, -0.10158727828058459, 0.35139771089667365, 0.21307189062991666, 0.06908863609922784, -0.018602999969429913, 0.2818050551272574, 0.20313338571715922, 0.035138156660000926, 0.07861605609234955, 0.21971080250417194, 0.14143001317002235, 0.08592882894334339, -0.12442095453540485, 0.10060450373705299, 0.07388569615154882] |
707.4199 | On the Possibility of the Detection of Extinct Radio Pulsars | We explore the possibilities for detecting pulsars that have ceased to
radiate in the radio band. We consider two models: the model with hindered
particle escape from the pulsar surface (first suggested by Ruderman and
Sutherland 1975) and the model with free particle escape (Arons 1981; Mestel
1999). In the model with hindered particle escape, the number of particles that
leave the pulsar magnetosphere is small and their radiation cannot be detected
with currently available instruments. At the same time, for the free particle
escape model, both the number of particles and the radiation intensity are high
enough for such pulsars to be detectable with the presently available receivers
such as GLAST and AGILE spacecrafts. It is also possible that extinct radio
pulsars can be among the unidentified EGRET sources.
| astro-ph | we explore the possibilities for detecting pulsars that have ceased to radiate in the radio band we consider two models the model with hindered particle escape from the pulsar surface first suggested by ruderman and sutherland 1975 and the model with free particle escape arons 1981 mestel 1999 in the model with hindered particle escape the number of particles that leave the pulsar magnetosphere is small and their radiation cannot be detected with currently available instruments at the same time for the free particle escape model both the number of particles and the radiation intensity are high enough for such pulsars to be detectable with the presently available receivers such as glast and agile spacecrafts it is also possible that extinct radio pulsars can be among the unidentified egret sources | [['we', 'explore', 'the', 'possibilities', 'for', 'detecting', 'pulsars', 'that', 'have', 'ceased', 'to', 'radiate', 'in', 'the', 'radio', 'band', 'we', 'consider', 'two', 'models', 'the', 'model', 'with', 'hindered', 'particle', 'escape', 'from', 'the', 'pulsar', 'surface', 'first', 'suggested', 'by', 'ruderman', 'and', 'sutherland', '1975', 'and', 'the', 'model', 'with', 'free', 'particle', 'escape', 'arons', '1981', 'mestel', '1999', 'in', 'the', 'model', 'with', 'hindered', 'particle', 'escape', 'the', 'number', 'of', 'particles', 'that', 'leave', 'the', 'pulsar', 'magnetosphere', 'is', 'small', 'and', 'their', 'radiation', 'can', 'not', 'be', 'detected', 'with', 'currently', 'available', 'instruments', 'at', 'the', 'same', 'time', 'for', 'the', 'free', 'particle', 'escape', 'model', 'both', 'the', 'number', 'of', 'particles', 'and', 'the', 'radiation', 'intensity', 'are', 'high', 'enough', 'for', 'such', 'pulsars', 'to', 'be', 'detectable', 'with', 'the', 'presently', 'available', 'receivers', 'such', 'as', 'glast', 'and', 'agile', 'spacecrafts', 'it', 'is', 'also', 'possible', 'that', 'extinct', 'radio', 'pulsars', 'can', 'be', 'among', 'the', 'unidentified', 'egret', 'sources']] | [-0.05169791875120539, 0.24015920100590357, -0.03127612989718238, 0.12587984600641694, -0.11160378987685993, -0.14121235077484295, 0.039917262457311156, 0.39632492400705815, -0.22552582136928462, -0.38011529710000524, 0.07202083579569052, -0.3144595022671498, -0.033097225370315404, 0.2499013535785847, -0.02162958443021545, 0.003667622381964555, 0.08779973769918657, -0.03785182359413459, 0.05605232629369801, -0.20911003472977496, 0.22955343400826678, 0.14909835238582814, 0.14885415015742182, 0.02320469074810927, 0.1092521333314765, -0.04946480993396388, -0.02446625523555737, -0.02402475946941055, -0.08981617134900612, 0.030815442644346217, 0.2235225595653901, 0.14905462018572369, 0.1562472217071515, -0.4287914818009505, -0.25636505661532283, 0.15208402526063414, 0.16311710662244316, 0.060088028078182386, -0.04716856568478621, -0.31367229708971883, 0.03580960868141399, -0.23774412440565917, -0.19911227443685325, 0.02756624072431945, 0.03411855549336626, 0.07797323257590716, -0.158916980221581, 0.05125469749663562, 0.013232153772304838, 0.013759086245241074, -0.12212080590319462, -0.081032946283141, -0.015085969503539113, 0.11956805051662601, 0.12163350048313777, 0.018415568706292944, 0.1387370605702297, -0.12528469659244784, -0.11130074578955268, 0.4016141153406352, -0.03551276015977447, -0.1130612099202923, 0.2381240272966142, -0.23775868261447894, -0.1604036848920469, 0.19772258540436338, 0.13288622729193705, 0.07977176305766288, -0.1536119367640752, 0.07498270552023314, -0.02244959076006825, 0.1444490504021255, 0.07813326724661658, 0.03159909511719329, 0.29331674479091396, 0.11756549023467903, 0.046923330743224, 0.09595253125567418, -0.22030220931539168, -0.022444073440811525, -0.23595028957710243, -0.12008876034703392, -0.20025525376863348, 0.042406400488443276, -0.03475479136093502, -0.12475369141141597, 0.35148428043780416, 0.15770307070074174, 0.10845439949144538, 0.04948269074196175, 0.29952966121670144, 0.12984334600713246, 0.06131060268694105, 0.17140618668725857, 0.338653052240037, 0.06393522526531552, 0.08373533132342766, -0.19049020184812923, 0.08282401115418626, -0.034399734494777824] |
707.42 | QCD Corrections to QED Vacuum Polarization | We compute QCD corrections to QED calculations for vacuum polarization in
background magnetic fields. Formally, the diagram for virtual $e\bar{e}$ loops
is identical to the one for virtual $q\bar{q}$ loops. However due to
confinement, or to the growth of $\alpha_s$ as $p^2$ decreases, a direct
calculation of the diagram is not allowed. At large $p^2$ we consider the
virtual $q\bar{q}$ diagram, in the intermediate region we discuss the role of
the contribution of quark condensates $\left< q\bar{q}\right>$ and at the
low-energy limit we consider the $\pi^0$, as well as charged pion $\pi^+\pi^-$
loops. Although these effects seem to be out of the measurement accuracy of
photon-photon laboratory experiments they may be relevant for $\gamma$-ray
burst propagation. In particular, for emissions from the center of the galaxy
(8.5 kpc), we show that the mixing between the neutral pseudo-scalar pion
$\pi_0$ and photons renders a deviation from the power-law spectrum in the
$TeV$ range. As for scalar quark condensates $\left< q\bar{q} right>$ and
virtual $q\bar{q}$ loops are relevant only for very high radiation density
$\sim 300 MeV/fm^3$ and very strong magnetic fields of order $\sim 10^{14} T$.
| hep-ph | we compute qcd corrections to qed calculations for vacuum polarization in background magnetic fields formally the diagram for virtual ebare loops is identical to the one for virtual qbarq loops however due to confinement or to the growth of alpha_s as p2 decreases a direct calculation of the diagram is not allowed at large p2 we consider the virtual qbarq diagram in the intermediate region we discuss the role of the contribution of quark condensates left qbarqright and at the lowenergy limit we consider the pi0 as well as charged pion pipi loops although these effects seem to be out of the measurement accuracy of photonphoton laboratory experiments they may be relevant for gammaray burst propagation in particular for emissions from the center of the galaxy 85 kpc we show that the mixing between the neutral pseudoscalar pion pi_0 and photons renders a deviation from the powerlaw spectrum in the tev range as for scalar quark condensates left qbarq right and virtual qbarq loops are relevant only for very high radiation density sim 300 mevfm3 and very strong magnetic fields of order sim 1014 t | [['we', 'compute', 'qcd', 'corrections', 'to', 'qed', 'calculations', 'for', 'vacuum', 'polarization', 'in', 'background', 'magnetic', 'fields', 'formally', 'the', 'diagram', 'for', 'virtual', 'ebare', 'loops', 'is', 'identical', 'to', 'the', 'one', 'for', 'virtual', 'qbarq', 'loops', 'however', 'due', 'to', 'confinement', 'or', 'to', 'the', 'growth', 'of', 'alpha_s', 'as', 'p2', 'decreases', 'a', 'direct', 'calculation', 'of', 'the', 'diagram', 'is', 'not', 'allowed', 'at', 'large', 'p2', 'we', 'consider', 'the', 'virtual', 'qbarq', 'diagram', 'in', 'the', 'intermediate', 'region', 'we', 'discuss', 'the', 'role', 'of', 'the', 'contribution', 'of', 'quark', 'condensates', 'left', 'qbarqright', 'and', 'at', 'the', 'lowenergy', 'limit', 'we', 'consider', 'the', 'pi0', 'as', 'well', 'as', 'charged', 'pion', 'pipi', 'loops', 'although', 'these', 'effects', 'seem', 'to', 'be', 'out', 'of', 'the', 'measurement', 'accuracy', 'of', 'photonphoton', 'laboratory', 'experiments', 'they', 'may', 'be', 'relevant', 'for', 'gammaray', 'burst', 'propagation', 'in', 'particular', 'for', 'emissions', 'from', 'the', 'center', 'of', 'the', 'galaxy', '85', 'kpc', 'we', 'show', 'that', 'the', 'mixing', 'between', 'the', 'neutral', 'pseudoscalar', 'pion', 'pi_0', 'and', 'photons', 'renders', 'a', 'deviation', 'from', 'the', 'powerlaw', 'spectrum', 'in', 'the', 'tev', 'range', 'as', 'for', 'scalar', 'quark', 'condensates', 'left', 'qbarq', 'right', 'and', 'virtual', 'qbarq', 'loops', 'are', 'relevant', 'only', 'for', 'very', 'high', 'radiation', 'density', 'sim', '300', 'mevfm3', 'and', 'very', 'strong', 'magnetic', 'fields', 'of', 'order', 'sim', '1014', 't']] | [-0.10635148362470333, 0.268792879874589, -0.035812432002377964, 0.14629384693788247, -0.031888623008138085, -0.09968179690554901, 0.05768467754614158, 0.37577320962808414, -0.18766727395192848, -0.26554046177478313, -0.009855278828715692, -0.3253143041857768, 0.011299588255675846, 0.16519252434271117, 0.07563319079729962, 0.02000972030104184, 0.026422663208204092, 0.025599711813806186, -0.033409368935743436, -0.1707126604561068, 0.3127169029257907, 0.028749262654512633, 0.21082930386453216, 0.15874078759129662, 0.044941056435775076, 0.005288560729718111, -0.0015921292602608765, -0.05028459990061209, -0.09019020438224333, 0.008061409695073962, 0.2212571340194481, 0.01922281691041149, 0.14134311193506147, -0.36369200054393275, -0.14268116699658903, 0.11113088501138928, 0.20582433755870888, 0.1014029980240176, -0.01621987663280687, -0.2793952443413029, 0.1066365294244975, -0.20363550229364488, -0.1583835865966365, -0.06510780165302746, 0.02057578512104839, -0.04939230701592216, -0.30763277536018907, 0.08891535458495953, -0.04156902193822109, 0.02647056290398758, -0.03929563254229928, -0.1349836232476547, -0.01884727538410635, 0.10349933001915085, 0.10189024427310243, 0.10200811465031626, 0.17639021312339548, -0.21470250912860564, -0.10010587533521136, 0.4371090367171771, -0.09012173209657455, -0.10568022406329222, 0.15244761260882875, -0.21066387788608257, -0.13419268224541037, 0.1611682773959604, 0.17056134787306718, 0.09415515720121603, -0.12277919853034892, 0.11364640292070317, 0.0009819601269316722, 0.15419082649184462, 0.10291382087053619, 0.07688145121297725, 0.22688386866522575, 0.12262579638007112, -0.008107266706272024, 0.10319736604884144, -0.10884296004736765, -0.0698058351224207, -0.3770259979481254, -0.12267050768701675, -0.09599368080886111, 0.0891753060037405, -0.10749987587272292, -0.14457252120873967, 0.33487821416165986, 0.11348295103455766, 0.22210449624368972, 0.00542659933368365, 0.29653979039908757, 0.1021118075329215, 0.08696963760971291, 0.07922484424942342, 0.31408771872011526, 0.18672457373512735, 0.13452213818125955, -0.24414396960074541, -0.02824248061286377, 0.04148940891765384] |
707.4201 | Noncommutative geometry and lower dimensional volumes in Riemannian
geometry | In this paper we explain how to define "lower dimensional'' volumes of any
compact Riemannian manifold as the integrals of local Riemannian invariants.
For instance we give sense to the area and the length of such a manifold in any
dimension. Our reasoning is motivated by an idea of Connes and involves in an
essential way noncommutative geometry and the analysis of Dirac operators on
spin manifolds. However, the ultimate definitions of the lower dimensional
volumes don't involve noncommutative geometry or spin structures at all.
| math.DG math.OA | in this paper we explain how to define lower dimensional volumes of any compact riemannian manifold as the integrals of local riemannian invariants for instance we give sense to the area and the length of such a manifold in any dimension our reasoning is motivated by an idea of connes and involves in an essential way noncommutative geometry and the analysis of dirac operators on spin manifolds however the ultimate definitions of the lower dimensional volumes dont involve noncommutative geometry or spin structures at all | [['in', 'this', 'paper', 'we', 'explain', 'how', 'to', 'define', 'lower', 'dimensional', 'volumes', 'of', 'any', 'compact', 'riemannian', 'manifold', 'as', 'the', 'integrals', 'of', 'local', 'riemannian', 'invariants', 'for', 'instance', 'we', 'give', 'sense', 'to', 'the', 'area', 'and', 'the', 'length', 'of', 'such', 'a', 'manifold', 'in', 'any', 'dimension', 'our', 'reasoning', 'is', 'motivated', 'by', 'an', 'idea', 'of', 'connes', 'and', 'involves', 'in', 'an', 'essential', 'way', 'noncommutative', 'geometry', 'and', 'the', 'analysis', 'of', 'dirac', 'operators', 'on', 'spin', 'manifolds', 'however', 'the', 'ultimate', 'definitions', 'of', 'the', 'lower', 'dimensional', 'volumes', 'dont', 'involve', 'noncommutative', 'geometry', 'or', 'spin', 'structures', 'at', 'all']] | [-0.13247334469821961, 0.10121511538985514, -0.0684101078330594, 0.11245734462624087, -0.09151417031500708, -0.09450208605541026, -0.02034038609742899, 0.3240059317473103, -0.253219030446866, -0.283946379975361, 0.1103386921054848, -0.2439301044899313, -0.18545019419809036, 0.21110789519186843, -0.1545729287680896, 0.009241941806805484, 0.002902672905474901, 0.07831439197830417, -0.1317496904226787, -0.24465119720381848, 0.47613192270783816, 0.035377840675851875, 0.2295292597154484, 0.08404147724127944, 0.14176595436189982, 0.03849757583264042, -0.011837994805811082, 0.02795591406414614, -0.15234762659186826, 0.19160183382165782, 0.286487445958397, 0.08473122363964862, 0.19489826432922308, -0.44207635792520117, -0.1946678763926577, 0.12397321704775095, 0.12916497125235551, 0.07054675218703992, 0.006331418976461624, -0.2713002868434962, 0.06392240527031176, -0.09362254362991627, -0.17909085748936324, -0.12121069846565233, 0.0290175994639011, -0.07882425924900043, -0.19347333751399728, 0.030850910050246646, 0.1374299008618383, 0.08787419081610792, -0.06792825478512575, -0.07507807112791959, -0.0005989995648098342, 0.12496968611444839, 0.014144624953212984, 0.0180830749190029, 0.1034151264521129, -0.06465451376296937, -0.18257704547688583, 0.3351214811370215, -0.027325327569783172, -0.2868254358085858, 0.16674479030291825, -0.14553101442014688, -0.14461838664377438, 0.08152201002573266, 0.15594362956197821, 0.16701810289831723, -0.07360015619436608, 0.16888149801217128, -0.02808538536157678, 0.11634146623751697, 0.07589372072149725, 0.06604176524150021, 0.18422826501157355, 0.12894028931417886, 0.1589541045072324, 0.08771721869159271, -0.04939225881141337, -0.09375215657329296, -0.32094376849777556, -0.24526165892534396, -0.16760335230569848, 0.15937687622191493, -0.1478826710730038, -0.1927483062095502, 0.3599015989340842, 0.0906345553627676, 0.23284596799845425, 0.06419704394305453, 0.27521359016844893, 0.08118707255241187, 0.07179379133398042, 0.08131925907561227, 0.16009544286986485, 0.17395522046478137, 0.07478678298785406, -0.13152328145772438, -0.034369249422760574, 0.1517792393508203] |
707.4202 | Multiclass Hammersley-Aldous-Diaconis process and multiclass-customer
queues | In the Hammersley-Aldous-Diaconis process infinitely many particles sit in R
and at most one particle is allowed at each position. A particle at x$ whose
nearest neighbor to the right is at y, jumps at rate y-x to a position
uniformly distributed in the interval (x,y). The basic coupling between
trajectories with different initial configuration induces a process with
different classes of particles. We show that the invariant measures for the
two-class process can be obtained as follows. First, a stationary M/M/1 queue
is constructed as a function of two homogeneous Poisson processes, the arrivals
with rate \lambda and the (attempted) services with rate \rho>\lambda. Then put
the first class particles at the instants of departures (effective services)
and second class particles at the instants of unused services. The procedure is
generalized for the n-class case by using n-1 queues in tandem with n-1
priority-types of customers. A multi-line process is introduced; it consists of
a coupling (different from Liggett's basic coupling), having as invariant
measure the product of Poisson processes. The definition of the multi-line
process involves the dual points of the space-time Poisson process used in the
graphical construction of the system. The coupled process is a transformation
of the multi-line process and its invariant measure the transformation
described above of the product measure.
| math.PR math-ph math.MP | in the hammersleyaldousdiaconis process infinitely many particles sit in r and at most one particle is allowed at each position a particle at x whose nearest neighbor to the right is at y jumps at rate yx to a position uniformly distributed in the interval xy the basic coupling between trajectories with different initial configuration induces a process with different classes of particles we show that the invariant measures for the twoclass process can be obtained as follows first a stationary mm1 queue is constructed as a function of two homogeneous poisson processes the arrivals with rate lambda and the attempted services with rate rholambda then put the first class particles at the instants of departures effective services and second class particles at the instants of unused services the procedure is generalized for the nclass case by using n1 queues in tandem with n1 prioritytypes of customers a multiline process is introduced it consists of a coupling different from liggetts basic coupling having as invariant measure the product of poisson processes the definition of the multiline process involves the dual points of the spacetime poisson process used in the graphical construction of the system the coupled process is a transformation of the multiline process and its invariant measure the transformation described above of the product measure | [['in', 'the', 'hammersleyaldousdiaconis', 'process', 'infinitely', 'many', 'particles', 'sit', 'in', 'r', 'and', 'at', 'most', 'one', 'particle', 'is', 'allowed', 'at', 'each', 'position', 'a', 'particle', 'at', 'x', 'whose', 'nearest', 'neighbor', 'to', 'the', 'right', 'is', 'at', 'y', 'jumps', 'at', 'rate', 'yx', 'to', 'a', 'position', 'uniformly', 'distributed', 'in', 'the', 'interval', 'xy', 'the', 'basic', 'coupling', 'between', 'trajectories', 'with', 'different', 'initial', 'configuration', 'induces', 'a', 'process', 'with', 'different', 'classes', 'of', 'particles', 'we', 'show', 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707.4203 | Uniform Uncertainty Principle and signal recovery via Regularized
Orthogonal Matching Pursuit | This paper seeks to bridge the two major algorithmic approaches to sparse
signal recovery from an incomplete set of linear measurements --
L_1-minimization methods and iterative methods (Matching Pursuits). We find a
simple regularized version of the Orthogonal Matching Pursuit (ROMP) which has
advantages of both approaches: the speed and transparency of OMP and the strong
uniform guarantees of the L_1-minimization. Our algorithm ROMP reconstructs a
sparse signal in a number of iterations linear in the sparsity (in practice
even logarithmic), and the reconstruction is exact provided the linear
measurements satisfy the Uniform Uncertainty Principle.
| math.NA | this paper seeks to bridge the two major algorithmic approaches to sparse signal recovery from an incomplete set of linear measurements l_1minimization methods and iterative methods matching pursuits we find a simple regularized version of the orthogonal matching pursuit romp which has advantages of both approaches the speed and transparency of omp and the strong uniform guarantees of the l_1minimization our algorithm romp reconstructs a sparse signal in a number of iterations linear in the sparsity in practice even logarithmic and the reconstruction is exact provided the linear measurements satisfy the uniform uncertainty principle | [['this', 'paper', 'seeks', 'to', 'bridge', 'the', 'two', 'major', 'algorithmic', 'approaches', 'to', 'sparse', 'signal', 'recovery', 'from', 'an', 'incomplete', 'set', 'of', 'linear', 'measurements', 'l_1minimization', 'methods', 'and', 'iterative', 'methods', 'matching', 'pursuits', 'we', 'find', 'a', 'simple', 'regularized', 'version', 'of', 'the', 'orthogonal', 'matching', 'pursuit', 'romp', 'which', 'has', 'advantages', 'of', 'both', 'approaches', 'the', 'speed', 'and', 'transparency', 'of', 'omp', 'and', 'the', 'strong', 'uniform', 'guarantees', 'of', 'the', 'l_1minimization', 'our', 'algorithm', 'romp', 'reconstructs', 'a', 'sparse', 'signal', 'in', 'a', 'number', 'of', 'iterations', 'linear', 'in', 'the', 'sparsity', 'in', 'practice', 'even', 'logarithmic', 'and', 'the', 'reconstruction', 'is', 'exact', 'provided', 'the', 'linear', 'measurements', 'satisfy', 'the', 'uniform', 'uncertainty', 'principle']] | [-0.1043876687441259, -0.016414164529433426, -0.11700262650451128, 0.0408838934839723, -0.09428961100205382, -0.13547350301288386, 0.056465174064369614, 0.3888037302630379, -0.3196714040724204, -0.2660370321122018, 0.12865948591980728, -0.25767264423020025, -0.16947719855159718, 0.1360721978621478, -0.1161579847474523, 0.1548037888541659, 0.08597101196844845, 0.04746768984725659, -0.1317415834885051, -0.25841944780388965, 0.18807670972904467, 0.05959629870832284, 0.34054847909732067, -0.009093032069900569, 0.14995581831069701, 0.04954766148721126, -0.03832357311423155, 0.03779682052381178, -0.08134852322016625, 0.15572394937910933, 0.28281667625452295, 0.2189897597529628, 0.32385398657185005, -0.4087518282195038, -0.1522512329504528, 0.1300901342827351, 0.115012856973137, 0.13386893461017493, -0.06840663547924858, -0.2448777534028, 0.10592504190479188, -0.09193344517274106, -0.04626306751247575, -0.07468868450737222, -0.10076608560345274, 0.0020878441988470705, -0.37150212563574314, 0.06755721702815053, 0.11446533344705846, 0.0209413441492522, -0.017154395903530035, -0.15127958294915708, 0.09831590681495343, 0.07467097952030599, 0.05146432863399783, 0.043177007930353284, 0.05099884100367335, -0.12428644804056099, -0.15725270130651745, 0.3602826242889971, -0.07712133709301656, -0.18406275061375282, 0.17277042828302117, -0.06303959586558507, -0.13558681938113606, 0.13840353161720756, 0.19336060238407649, 0.0808578139812527, -0.11143173957045407, 0.10027447873676949, -0.08629114174858686, 0.14444972840236855, 0.08289167955715923, 0.031007289992982245, 0.08981870738987593, 0.13228876493922917, 0.17029714366381474, 0.09125420098822128, -0.08450976707179972, -0.03866993115739303, -0.24174703886494675, -0.07359291568888907, -0.21769107876226623, -0.07063999689838037, -0.16920301279962122, -0.20107768860427624, 0.4193045022511023, 0.14751472813572655, 0.18415643240107185, 0.10372660425120092, 0.4195022166092345, 0.11290600975406322, 0.013374331321175943, 0.11472395139231169, 0.25740600716164136, 0.1863935034266336, 0.036506407101579166, -0.21235328957567268, 0.07402421385446127, 0.09749742041520298] |
707.4204 | Double bracket dissipation in kinetic theory for particles with
anisotropic interactions | We derive equations of motion for the dynamics of anisotropic particles
directly from the dissipative Vlasov kinetic equations, with the dissipation
given by the double bracket approach (Double Bracket Vlasov, or DBV). The
moments of the DBV equation lead to a nonlocal form of Darcy's law for the mass
density. Next, kinetic equations for particles with anisotropic interaction are
considered and also cast into the DBV form. The moment dynamics for these
double bracket kinetic equations is expressed as Lie-Darcy continuum equations
for densities of mass and orientation. We also show how to obtain a
Smoluchowski model from a cold plasma-like moment closure of DBV. Thus, the
double bracket kinetic framework serves as a unifying method for deriving
different types of dynamics, from density--orientation to Smoluchowski
equations. Extensions for more general physical systems are also discussed.
| nlin.AO cond-mat.mes-hall nlin.PS physics.chem-ph | we derive equations of motion for the dynamics of anisotropic particles directly from the dissipative vlasov kinetic equations with the dissipation given by the double bracket approach double bracket vlasov or dbv the moments of the dbv equation lead to a nonlocal form of darcys law for the mass density next kinetic equations for particles with anisotropic interaction are considered and also cast into the dbv form the moment dynamics for these double bracket kinetic equations is expressed as liedarcy continuum equations for densities of mass and orientation we also show how to obtain a smoluchowski model from a cold plasmalike moment closure of dbv thus the double bracket kinetic framework serves as a unifying method for deriving different types of dynamics from densityorientation to smoluchowski equations extensions for more general physical systems are also discussed | [['we', 'derive', 'equations', 'of', 'motion', 'for', 'the', 'dynamics', 'of', 'anisotropic', 'particles', 'directly', 'from', 'the', 'dissipative', 'vlasov', 'kinetic', 'equations', 'with', 'the', 'dissipation', 'given', 'by', 'the', 'double', 'bracket', 'approach', 'double', 'bracket', 'vlasov', 'or', 'dbv', 'the', 'moments', 'of', 'the', 'dbv', 'equation', 'lead', 'to', 'a', 'nonlocal', 'form', 'of', 'darcys', 'law', 'for', 'the', 'mass', 'density', 'next', 'kinetic', 'equations', 'for', 'particles', 'with', 'anisotropic', 'interaction', 'are', 'considered', 'and', 'also', 'cast', 'into', 'the', 'dbv', 'form', 'the', 'moment', 'dynamics', 'for', 'these', 'double', 'bracket', 'kinetic', 'equations', 'is', 'expressed', 'as', 'liedarcy', 'continuum', 'equations', 'for', 'densities', 'of', 'mass', 'and', 'orientation', 'we', 'also', 'show', 'how', 'to', 'obtain', 'a', 'smoluchowski', 'model', 'from', 'a', 'cold', 'plasmalike', 'moment', 'closure', 'of', 'dbv', 'thus', 'the', 'double', 'bracket', 'kinetic', 'framework', 'serves', 'as', 'a', 'unifying', 'method', 'for', 'deriving', 'different', 'types', 'of', 'dynamics', 'from', 'densityorientation', 'to', 'smoluchowski', 'equations', 'extensions', 'for', 'more', 'general', 'physical', 'systems', 'are', 'also', 'discussed']] | [-0.1117401390445919, 0.12207620005721032, -0.10238863366530902, 0.101953008546626, -0.0912121308258554, -0.128572533800225, -0.04145533834330376, 0.2504893474058429, -0.2989818936321579, -0.31387391641958434, 0.005771463656964809, -0.2270184739548435, -0.11286753550373407, 0.19436983268363958, 0.03015385029503881, 0.03841986455746106, 0.039146277706013685, 0.031320149092865526, -0.08406136803495795, -0.15995723344107618, 0.3365775202470484, 0.036725165044416246, 0.20021233525571983, -0.01654238035075311, 0.13698396822368142, -0.03213895140771768, 0.01158954528396699, 0.02417547669637003, -0.17726706977544435, 0.05448393397547527, 0.15734164816468135, 0.03410512424046313, 0.2044206374227556, -0.4645080612694372, -0.23533920404230202, 0.0020102772083300264, 0.15107001378131446, 0.11531614577189199, -0.04405481269838959, -0.2905647835013137, 0.0004837806579837603, -0.20055672147054113, -0.20660556858030163, -0.08231564552815103, 0.038993547702687724, 0.11804757324488722, -0.2991223540296083, 0.17072522066252951, 0.08004293277678984, -0.02744820296986779, -0.13591413236476843, -0.13097022097373603, -0.04947805607260497, 0.051481399176044586, 0.005372983731030584, -0.03908691625458313, 0.11410985042952668, -0.14856779209291215, -0.07073516820543516, 0.4307040106783162, -0.09885255924995932, -0.28328036864413253, 0.13434815214974666, -0.11295220757306401, -0.14192562758463867, 0.15488729927925143, 0.15088478322557883, 0.1199250955653395, -0.23959756402104204, 0.07710375438301838, -0.020386018850249862, 0.07919951819522834, 0.0426593120140371, 0.002268199369731818, 0.2275018592038428, 0.1500601738607928, 0.018046398754857147, 0.10868667799340033, -0.04983727979028959, -0.2018383367060086, -0.3376003495737243, -0.18075560387953726, -0.1266466511705362, 0.09110473460559525, -0.10511907504557862, -0.1768100022063799, 0.3228387560577257, 0.14579291654222493, 0.12422412466396814, 0.05727794913595904, 0.27438396164007595, 0.22711898936062996, 0.043862856295543595, 0.05632707548723904, 0.21576779356587733, 0.24027024434163555, 0.12506147984019134, -0.23484379956985255, 0.007527427510671151, 0.16314477999625143] |
707.4205 | Symbolic Models for Nonlinear Control Systems: Alternating Approximate
Bisimulations | Symbolic models are abstract descriptions of continuous systems in which
symbols represent aggregates of continuous states. In the last few years there
has been a growing interest in the use of symbolic models as a tool for
mitigating complexity in control design. In fact, symbolic models enable the
use of well known algorithms in the context of supervisory control and
algorithmic game theory, for controller synthesis. Since the 1990's many
researchers faced the problem of identifying classes of dynamical and control
systems that admit symbolic models. In this paper we make a further progress
along this research line by focusing on control systems affected by
disturbances. Our main contribution is to show that incrementally globally
asymptotically stable nonlinear control systems with disturbances admit
symbolic models. When specializing these results to linear systems, we show
that these symbolic models can be easily constructed.
| math.OC | symbolic models are abstract descriptions of continuous systems in which symbols represent aggregates of continuous states in the last few years there has been a growing interest in the use of symbolic models as a tool for mitigating complexity in control design in fact symbolic models enable the use of well known algorithms in the context of supervisory control and algorithmic game theory for controller synthesis since the 1990s many researchers faced the problem of identifying classes of dynamical and control systems that admit symbolic models in this paper we make a further progress along this research line by focusing on control systems affected by disturbances our main contribution is to show that incrementally globally asymptotically stable nonlinear control systems with disturbances admit symbolic models when specializing these results to linear systems we show that these symbolic models can be easily constructed | [['symbolic', 'models', 'are', 'abstract', 'descriptions', 'of', 'continuous', 'systems', 'in', 'which', 'symbols', 'represent', 'aggregates', 'of', 'continuous', 'states', 'in', 'the', 'last', 'few', 'years', 'there', 'has', 'been', 'a', 'growing', 'interest', 'in', 'the', 'use', 'of', 'symbolic', 'models', 'as', 'a', 'tool', 'for', 'mitigating', 'complexity', 'in', 'control', 'design', 'in', 'fact', 'symbolic', 'models', 'enable', 'the', 'use', 'of', 'well', 'known', 'algorithms', 'in', 'the', 'context', 'of', 'supervisory', 'control', 'and', 'algorithmic', 'game', 'theory', 'for', 'controller', 'synthesis', 'since', 'the', '1990s', 'many', 'researchers', 'faced', 'the', 'problem', 'of', 'identifying', 'classes', 'of', 'dynamical', 'and', 'control', 'systems', 'that', 'admit', 'symbolic', 'models', 'in', 'this', 'paper', 'we', 'make', 'a', 'further', 'progress', 'along', 'this', 'research', 'line', 'by', 'focusing', 'on', 'control', 'systems', 'affected', 'by', 'disturbances', 'our', 'main', 'contribution', 'is', 'to', 'show', 'that', 'incrementally', 'globally', 'asymptotically', 'stable', 'nonlinear', 'control', 'systems', 'with', 'disturbances', 'admit', 'symbolic', 'models', 'when', 'specializing', 'these', 'results', 'to', 'linear', 'systems', 'we', 'show', 'that', 'these', 'symbolic', 'models', 'can', 'be', 'easily', 'constructed']] | [-0.09932354546781681, 0.06949083921893066, -0.07183065124406991, 0.04735347508980801, -0.05871493524124085, -0.16351097275283266, -0.007805804954841733, 0.37520783859724016, -0.30112711634014694, -0.2916783543539719, 0.16406571741533976, -0.22245903039665918, -0.21888667589027277, 0.2643898787422919, -0.1349441874575552, 0.12366857016983797, 0.07905022689784078, 0.0036745279646990163, -0.025612550379354244, -0.2598978357232163, 0.3278521725048744, 0.00712322717709598, 0.22218558892384696, -0.02909710508128497, 0.08871863964899168, -0.01737776163204665, -0.05344223321586008, 0.03641391155624788, -0.07794426859459556, 0.16710024098513163, 0.3504587029845066, 0.1906806024129201, 0.3331933291071475, -0.44949636011528715, -0.2657918935497357, 0.12112094891260863, 0.14797821456999322, 0.1474121794634184, -0.050654613249771246, -0.27503007054853607, 0.0940155695564717, -0.19502908896497437, -0.09464588129735539, -0.12265455378317865, 0.03161308673066153, 0.035100180183497955, -0.23165096439631053, -0.02587793629393506, 0.1055723275121508, 0.09152813364495851, -0.0850489169529731, -0.0644639176775662, -0.015839782661535372, 0.15041788643767934, 0.03080052544008678, -2.398101521104994e-06, 0.09996976618143455, -0.12832341719300708, -0.21213471576322238, 0.34420656376111675, 0.003279305293559241, -0.22143725765718172, 0.2142589115537703, -0.06531770402257343, -0.20733293622869894, 0.11004859794867487, 0.23706275922762562, 0.13019266262532433, -0.13969413060778965, 0.11844392790226266, -0.016437562762982617, 0.20569602188877237, 0.03630639961428783, 0.02179390274670342, 0.21839473859577532, 0.18735864069017674, 0.0788279860932216, 0.13517062089645343, 0.05964936566716191, -0.15634747870056562, -0.2377976568310823, -0.09419625909330034, -0.09756899582104049, -0.013050518300331814, -0.02940331371218248, -0.1706548098894492, 0.3838707237294547, 0.19209217052237773, 0.1423325897194445, 0.09116123084054316, 0.30649420393230786, 0.12072781154280857, 0.0591867602935297, 0.09027197627796674, 0.214305177726127, 0.10629946122956004, 0.11695677701311684, -0.17159415400155795, 0.09267009212963388, 0.05214354683789359] |
707.4206 | Interferometry of non-Abelian Anyons | We develop the general quantum measurement theory of non-Abelian anyons
through interference experiments. The paper starts with a terse introduction to
the theory of anyon models, focusing on the basic formalism necessary to apply
standard quantum measurement theory to such systems. This is then applied to
give a detailed analysis of anyonic charge measurements using a Mach-Zehnder
interferometer for arbitrary anyon models. We find that, as anyonic probes are
sent through the legs of the interferometer, superpositions of the total
anyonic charge located in the target region collapse when they are
distinguishable via monodromy with the probe anyons, which also determines the
rate of collapse. We give estimates on the number of probes needed to obtain a
desired confidence level for the measurement outcome distinguishing between
charges, and explicitly work out a number of examples for some significant
anyon models. We apply the same techniques to describe interferometry
measurements in a double point-contact interferometer realized in fractional
quantum Hall systems. To lowest order in tunneling, these results essentially
match those from the Mach-Zehnder interferometer, but we also provide the
corrections due to processes involving multiple tunnelings. Finally, we give
explicit predictions describing state measurements for experiments in the
Abelian hierarchy states, the non-Abelian Moore-Read state at $\nu=5/2$ and
Read-Rezayi state at $\nu = 12/5$.
| quant-ph cond-mat.mes-hall hep-th | we develop the general quantum measurement theory of nonabelian anyons through interference experiments the paper starts with a terse introduction to the theory of anyon models focusing on the basic formalism necessary to apply standard quantum measurement theory to such systems this is then applied to give a detailed analysis of anyonic charge measurements using a machzehnder interferometer for arbitrary anyon models we find that as anyonic probes are sent through the legs of the interferometer superpositions of the total anyonic charge located in the target region collapse when they are distinguishable via monodromy with the probe anyons which also determines the rate of collapse we give estimates on the number of probes needed to obtain a desired confidence level for the measurement outcome distinguishing between charges and explicitly work out a number of examples for some significant anyon models we apply the same techniques to describe interferometry measurements in a double pointcontact interferometer realized in fractional quantum hall systems to lowest order in tunneling these results essentially match those from the machzehnder interferometer but we also provide the corrections due to processes involving multiple tunnelings finally we give explicit predictions describing state measurements for experiments in the abelian hierarchy states the nonabelian mooreread state at nu52 and readrezayi state at nu 125 | [['we', 'develop', 'the', 'general', 'quantum', 'measurement', 'theory', 'of', 'nonabelian', 'anyons', 'through', 'interference', 'experiments', 'the', 'paper', 'starts', 'with', 'a', 'terse', 'introduction', 'to', 'the', 'theory', 'of', 'anyon', 'models', 'focusing', 'on', 'the', 'basic', 'formalism', 'necessary', 'to', 'apply', 'standard', 'quantum', 'measurement', 'theory', 'to', 'such', 'systems', 'this', 'is', 'then', 'applied', 'to', 'give', 'a', 'detailed', 'analysis', 'of', 'anyonic', 'charge', 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707.4207 | Large time asymptotics of growth models on space-like paths II: PNG and
parallel TASEP | We consider the polynuclear growth (PNG) model in 1+1 dimension with flat
initial condition and no extra constraints. The joint distributions of surface
height at finitely many points at a fixed time moment are given as marginals of
a signed determinantal point process. The long time scaling limit of the
surface height is shown to coincide with the Airy_1 process. This result holds
more generally for the observation points located along any space-like path in
the space-time plane. We also obtain the corresponding results for the discrete
time TASEP (totally asymmetric simple exclusion process) with parallel update.
| math-ph cond-mat.stat-mech math.MP math.PR | we consider the polynuclear growth png model in 11 dimension with flat initial condition and no extra constraints the joint distributions of surface height at finitely many points at a fixed time moment are given as marginals of a signed determinantal point process the long time scaling limit of the surface height is shown to coincide with the airy_1 process this result holds more generally for the observation points located along any spacelike path in the spacetime plane we also obtain the corresponding results for the discrete time tasep totally asymmetric simple exclusion process with parallel update | [['we', 'consider', 'the', 'polynuclear', 'growth', 'png', 'model', 'in', '11', 'dimension', 'with', 'flat', 'initial', 'condition', 'and', 'no', 'extra', 'constraints', 'the', 'joint', 'distributions', 'of', 'surface', 'height', 'at', 'finitely', 'many', 'points', 'at', 'a', 'fixed', 'time', 'moment', 'are', 'given', 'as', 'marginals', 'of', 'a', 'signed', 'determinantal', 'point', 'process', 'the', 'long', 'time', 'scaling', 'limit', 'of', 'the', 'surface', 'height', 'is', 'shown', 'to', 'coincide', 'with', 'the', 'airy_1', 'process', 'this', 'result', 'holds', 'more', 'generally', 'for', 'the', 'observation', 'points', 'located', 'along', 'any', 'spacelike', 'path', 'in', 'the', 'spacetime', 'plane', 'we', 'also', 'obtain', 'the', 'corresponding', 'results', 'for', 'the', 'discrete', 'time', 'tasep', 'totally', 'asymmetric', 'simple', 'exclusion', 'process', 'with', 'parallel', 'update']] | [-0.14811757521118163, 0.13589332117243028, -0.0972931653779653, 0.07708502005869039, -0.0426973858680192, -0.16041189929489622, 0.04851064863962784, 0.3817988782016964, -0.2694835515174362, -0.23085579950453655, 0.09886260499899305, -0.24247105732636967, -0.07891167393050243, 0.18837493379389117, -0.021667697097261233, 0.048446872265596595, 0.05687136054051003, 0.0655475249994047, -0.062057142990842924, -0.2678309045768026, 0.32420575603741925, 0.04756523978166743, 0.2773332455838771, 0.03449364655804772, 0.11795817906056176, 0.05562432075324997, -0.023852269798901277, -0.013310686469116468, -0.1553847721979483, 0.04332099833163269, 0.19049418851800418, 0.04618985453961398, 0.17481276592162928, -0.40843180084082575, -0.18392974646166735, 0.1753908260197369, 0.12076218462232308, 0.101603863320371, -0.021565466047025805, -0.26049867480724437, 0.06733628114944651, -0.0873620997077411, -0.2258826679137257, 0.053073862337113656, 0.05705989541044248, 0.011432294804031587, -0.27113204368764593, 0.09512061758306521, 0.11824033428559598, 0.06157908133547945, -0.044057842154420684, -0.09566545352032504, -0.062031082636148656, 0.07763127481310446, 0.03747168917253316, 0.03365052408375537, 0.11190825934550658, -0.06711838833901301, -0.13609585692126727, 0.32928553506367136, -0.0491589391316028, -0.24298440109093472, 0.1828344711678621, -0.20530482989822313, -0.1468491456087333, 0.17688099345307529, 0.14909408567053237, 0.10244898275789066, -0.13881388125633917, 0.15914573057581066, -0.057852145591654726, 0.09142732009748909, 0.129450738914887, -0.026939711445275235, 0.20769346835424454, 0.1286782791655626, 0.13692344341501497, 0.13235779351689228, -0.08987526887110867, -0.1435933135037032, -0.370349376644824, -0.15498736481837563, -0.1939031031023538, 0.06114550923074106, -0.17765555934504648, -0.1900448928567336, 0.3282754011188163, 0.09367189853279323, 0.2734418147598806, 0.14166239713385856, 0.2279378287686208, 0.15551489740778146, 0.017556469369026804, 0.11504073185154919, 0.10622400033393319, 0.10323900750540581, 0.07612580901549496, -0.12329880665200427, 0.06787081482368953, 0.06406561455199707] |
707.4208 | Research News -- Observation of Exotic Heavy Baryons | We review the recent discoveries of exotic heavy baryons at the Fermi
National Accelerator Laboratory.
| physics.pop-ph hep-ex hep-ph | we review the recent discoveries of exotic heavy baryons at the fermi national accelerator laboratory | [['we', 'review', 'the', 'recent', 'discoveries', 'of', 'exotic', 'heavy', 'baryons', 'at', 'the', 'fermi', 'national', 'accelerator', 'laboratory']] | [-0.1122316108395656, 0.31029918485631547, -0.10143664767965674, 0.12884691700649759, -0.08921907618641853, -0.13780243024230004, 0.07140238881111145, 0.2036535732448101, -0.1660803636536002, -0.334908094505469, -0.08203769751513998, -0.4732920224467913, 0.06999871879816055, 0.23431756955881913, 0.09281884624312321, 0.13702726662158965, 0.09701627921313047, -0.03573074912031492, -0.08176937624812126, -0.2944699918851256, 0.3661437230805556, 0.24878721199929715, 0.31390891745686533, 0.1469654164587458, 0.043552116304636, -0.09828186879555384, -0.08041568621993064, -0.16444087345153094, -0.11962394267320633, 0.1202031663308541, 0.32119089203576245, 0.018249719341595968, 0.2699323420723279, -0.4834675698230664, -0.14978790916502477, 0.035505853965878485, 0.0462973453104496, 0.14969489524761836, -0.2032078020274639, -0.38068736375619966, -0.08463372612992923, -0.2516933470964432, -0.31770272068679334, -0.06759738177061081, -0.007887693991263708, 0.030262123545010886, -0.062458874036868416, 0.008428442974885304, -0.08793734976400931, 0.14828444829133028, -0.07323922875026861, -0.3176793534308672, 0.10567531396324435, -0.0620709516108036, 0.09517213540772597, 0.08213300299054632, 0.1818371362052858, -0.21886610214908916, -0.13578292379776638, 0.3674071878194809, -0.030771643668413163, 0.089253889148434, 0.23338069766759872, -0.33465871289372445, -0.2873112847407659, 0.03335464174548785, 0.31020897850394247, -0.020539713154236475, -0.10708828667799632, 0.11730922957261404, -0.12222577432791391, -0.03107849508523941, 0.04779517787198226, 0.07463324069976807, 0.3882436084250609, 0.2860428782179952, -0.10378804318606853, -0.0595887598892053, -0.1538913557616373, -0.027996543205032746, -0.39176897356907525, -0.14787568002939225, -0.0612469697992007, 0.01965864496305585, 0.1964202436308066, -0.010376228423168262, 0.4240195086846749, 0.08039767555892467, 0.1221707987288634, -0.18742121059137087, 0.3062277761598428, -0.10875739213079214, 0.08176872686793407, 0.12108791048328081, 0.3099953388174375, 0.05864032780130704, 0.19700015050669512, -0.2478034347295761, 0.015082628567082186, 0.006892524473369121] |
707.4209 | Research News -- Observation of oscillation phenomena in heavy meson
systems | We review the recent discoveries of rare oscillation phenomena in certain
heavy neutral meson systems.
| physics.pop-ph hep-ex hep-ph | we review the recent discoveries of rare oscillation phenomena in certain heavy neutral meson systems | [['we', 'review', 'the', 'recent', 'discoveries', 'of', 'rare', 'oscillation', 'phenomena', 'in', 'certain', 'heavy', 'neutral', 'meson', 'systems']] | [-0.2052004654891789, 0.3587701287741462, 0.015326153486967087, 0.1538756822546323, -0.05786979744831721, -0.14829894949992498, 0.12030490823090076, 0.20516769948105018, -0.21713474448770284, -0.1959689274430275, -0.0040182117450361455, -0.40391461650530497, -0.16218379512429237, 0.1631826963275671, 0.005942222848534584, 0.09486779998987913, 0.11396917477250099, -0.018572561939557395, -0.058303150914919874, -0.220605450294291, 0.3038635859886805, 0.002121806020538012, 0.21702591528495152, 0.09712725778420767, -0.06448014676570893, -0.011579377173135678, -0.10860236994922161, -0.06703540148834387, -0.18189861985544364, 0.09088422867159049, 0.20125035531818866, 0.16640389747917653, 0.22653476844231288, -0.38966765590012076, -0.19883453299601872, 0.1408687487244606, 0.180434055129687, 0.21923466635247071, -0.21717140426238377, -0.35964947268366815, -0.05949582569301128, -0.19619132311393817, -0.21448264081651966, -0.14336677342653276, 0.06823800429701805, 0.05138411472241084, -0.19251760865251225, 0.10445391573011875, -0.05073972425113122, 0.11904877741277839, -0.028741934895515443, -0.24758260985836386, 0.11984171171983084, -0.024681722993652025, 0.19802573136985302, -0.01332794443393747, 0.16572824496154984, -0.21536245963846642, -0.1868347881982724, 0.40132222697138786, -0.11618088057730347, -0.025767661134401956, 0.2804360454281171, -0.3214838509758314, -0.3051955831547578, 0.12784923401971657, 0.2763994907339414, 0.10448144972324372, -0.20364275351166725, 0.039985869204004605, -0.0962947408358256, 0.03605868071317673, -0.024100011959671975, 0.23010407282660406, 0.3435050524771214, 0.27853725887835024, -0.12298998658855756, -0.021943998336791993, -0.02225092574954033, -0.06320142770806948, -0.33281963964303335, -0.09560082977016766, 0.013917873054742813, 0.07232588579257329, 0.10757520571351051, -0.129127724096179, 0.4170716032385826, 0.1301422208547592, 0.2563096513350805, -0.1684418227057904, 0.2748750967284044, 0.00812757338086764, 0.04995530446370443, -0.026606390873591106, 0.30598855490485827, 0.19978813057144482, 0.24018479598065218, -0.22714914133151373, 0.02698798046912998, 0.04765497340510289] |
707.421 | Sampling Lissajous and Fourier knots | A Lissajous knot is one that can be parameterized by a single cosine function
in each coordinate. Lissajous knots are highly symmetric, and for this reason,
not all knots are Lissajous. We prove several theorems which allow us to place
bounds on the number of Lissajous knot types with given frequencies and to
efficiently sample all possible Lissajous knots with a given set of
frequencies. In particular, we systematically tabulate all Lissajous knots with
small frequencies and as a result substantially enlarge the tables of known
Lissajous knots.
A Fourier (i, j, k) knot is similar to a Lissajous knot except that each
coordinate is now described by a finite sum of i, j, and k cosine functions
respectively. According to Lamm, every knot is a Fourier-(1,1,k) knot for some
k. By randomly searching the set of Fourier-(1,1,2) knots we find that all
2-bridge knots up to 14 crossings are either Lissajous or Fourier-(1,1,2)
knots. We show that all twist knots are Fourier-(1,1,2) knots and give evidence
suggesting that all torus knots are Fourier-(1,1,2) knots.
As a result of our computer search, several knots with relatively small
crossing numbers are identified as potential counterexamples to interesting
conjectures.
| math.GT | a lissajous knot is one that can be parameterized by a single cosine function in each coordinate lissajous knots are highly symmetric and for this reason not all knots are lissajous we prove several theorems which allow us to place bounds on the number of lissajous knot types with given frequencies and to efficiently sample all possible lissajous knots with a given set of frequencies in particular we systematically tabulate all lissajous knots with small frequencies and as a result substantially enlarge the tables of known lissajous knots a fourier i j k knot is similar to a lissajous knot except that each coordinate is now described by a finite sum of i j and k cosine functions respectively according to lamm every knot is a fourier11k knot for some k by randomly searching the set of fourier112 knots we find that all 2bridge knots up to 14 crossings are either lissajous or fourier112 knots we show that all twist knots are fourier112 knots and give evidence suggesting that all torus knots are fourier112 knots as a result of our computer search several knots with relatively small crossing numbers are identified as potential counterexamples to interesting conjectures | [['a', 'lissajous', 'knot', 'is', 'one', 'that', 'can', 'be', 'parameterized', 'by', 'a', 'single', 'cosine', 'function', 'in', 'each', 'coordinate', 'lissajous', 'knots', 'are', 'highly', 'symmetric', 'and', 'for', 'this', 'reason', 'not', 'all', 'knots', 'are', 'lissajous', 'we', 'prove', 'several', 'theorems', 'which', 'allow', 'us', 'to', 'place', 'bounds', 'on', 'the', 'number', 'of', 'lissajous', 'knot', 'types', 'with', 'given', 'frequencies', 'and', 'to', 'efficiently', 'sample', 'all', 'possible', 'lissajous', 'knots', 'with', 'a', 'given', 'set', 'of', 'frequencies', 'in', 'particular', 'we', 'systematically', 'tabulate', 'all', 'lissajous', 'knots', 'with', 'small', 'frequencies', 'and', 'as', 'a', 'result', 'substantially', 'enlarge', 'the', 'tables', 'of', 'known', 'lissajous', 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0.17217103712621848, 0.14105194223981127, 0.11679738385564818, -0.04850099742773692, -0.05390280439062234, -0.00765462635484125, 0.1344497345022059] |
707.4211 | Expansion of the Planet Detection Channels in Next-Generation
Microlensing Surveys | We classify various types of planetary lensing signals and the channels of
detecting them. We estimate the relative frequencies of planet detections
through the individual channels with special emphasis on the new channels to be
additionally provided by future lensing experiments that will survey wide
fields continuously at high cadence by using very large-format imaging cameras.
From this investigation, we find that the fraction of wide-separation planets
that would be discovered through the new channels of detecting planetary
signals as independent and repeating events would be substantial. We estimate
that the fraction of planets detectable through the new channels would comprise
~15 -- 30% of all planets depending on the models of the planetary separation
distribution and mass ratios of planets. Considering that a significant
fraction of planets might exist in the form of free-floating planets, the
frequency of planets to be detected through the new channel would be even
higher. With the expansion of the channels of detecting planet, future lensing
surveys will greatly expand the range of planets to be probed.
| astro-ph | we classify various types of planetary lensing signals and the channels of detecting them we estimate the relative frequencies of planet detections through the individual channels with special emphasis on the new channels to be additionally provided by future lensing experiments that will survey wide fields continuously at high cadence by using very largeformat imaging cameras from this investigation we find that the fraction of wideseparation planets that would be discovered through the new channels of detecting planetary signals as independent and repeating events would be substantial we estimate that the fraction of planets detectable through the new channels would comprise 15 30 of all planets depending on the models of the planetary separation distribution and mass ratios of planets considering that a significant fraction of planets might exist in the form of freefloating planets the frequency of planets to be detected through the new channel would be even higher with the expansion of the channels of detecting planet future lensing surveys will greatly expand the range of planets to be probed | [['we', 'classify', 'various', 'types', 'of', 'planetary', 'lensing', 'signals', 'and', 'the', 'channels', 'of', 'detecting', 'them', 'we', 'estimate', 'the', 'relative', 'frequencies', 'of', 'planet', 'detections', 'through', 'the', 'individual', 'channels', 'with', 'special', 'emphasis', 'on', 'the', 'new', 'channels', 'to', 'be', 'additionally', 'provided', 'by', 'future', 'lensing', 'experiments', 'that', 'will', 'survey', 'wide', 'fields', 'continuously', 'at', 'high', 'cadence', 'by', 'using', 'very', 'largeformat', 'imaging', 'cameras', 'from', 'this', 'investigation', 'we', 'find', 'that', 'the', 'fraction', 'of', 'wideseparation', 'planets', 'that', 'would', 'be', 'discovered', 'through', 'the', 'new', 'channels', 'of', 'detecting', 'planetary', 'signals', 'as', 'independent', 'and', 'repeating', 'events', 'would', 'be', 'substantial', 'we', 'estimate', 'that', 'the', 'fraction', 'of', 'planets', 'detectable', 'through', 'the', 'new', 'channels', 'would', 'comprise', '15', '30', 'of', 'all', 'planets', 'depending', 'on', 'the', 'models', 'of', 'the', 'planetary', 'separation', 'distribution', 'and', 'mass', 'ratios', 'of', 'planets', 'considering', 'that', 'a', 'significant', 'fraction', 'of', 'planets', 'might', 'exist', 'in', 'the', 'form', 'of', 'freefloating', 'planets', 'the', 'frequency', 'of', 'planets', 'to', 'be', 'detected', 'through', 'the', 'new', 'channel', 'would', 'be', 'even', 'higher', 'with', 'the', 'expansion', 'of', 'the', 'channels', 'of', 'detecting', 'planet', 'future', 'lensing', 'surveys', 'will', 'greatly', 'expand', 'the', 'range', 'of', 'planets', 'to', 'be', 'probed']] | [-0.16460911335347783, 0.17325207849607133, -0.05183314435931226, 0.0435843053158795, -0.10980832831647117, -0.07830828481602894, 0.09921299298848892, 0.32181809602446076, -0.2008745895108468, -0.3475520456816221, 0.11735553243183965, -0.2873543713114571, -0.10263931404509538, 0.25141839975989316, -0.03382767399578074, 0.01566760603143552, 0.1737781310701732, -0.06449418119696337, -0.036748344460393975, -0.2808586900869688, 0.28533103344772487, 0.09631736427518474, 0.083827348934963, 0.022282837850832227, 0.04382886238623584, -0.0358716769273891, -0.07314938519604851, -0.025759070532309802, -0.14342919075364946, 0.04922630355780035, 0.27467316289955285, 0.18716261169068932, 0.19705126536360315, -0.39311290253495235, -0.2219789423763232, 0.1232459653049794, 0.18854256508720302, 0.05556870711599152, -0.05338039502723489, -0.3356445992181381, 0.12160157228259608, -0.18365464784573157, -0.12645589468220986, -0.012654705411689572, 0.037776390640173366, 0.06528778140822988, -0.264092508042881, 0.0721785891029529, 0.0255285008957418, 0.07473670424308715, -0.09557825948252495, -0.14228638883701764, -0.016650882494083585, 0.13307193132539735, 0.028069538219972667, -0.017337171391307832, 0.17351113598208961, -0.1410217661637986, -0.04904221075716927, 0.372822780292048, -0.1258289147828987, -0.09984107099901235, 0.24345136215933327, -0.2552907099408574, -0.12239641929586786, 0.16100831862354956, 0.24564700083384766, 0.10949801174154895, -0.18745613628037294, -0.03254302970416638, -0.0010655769038685533, 0.1943865454035573, 0.09986918253233916, 0.08992003004315721, 0.38594253458959854, 0.11908901957145264, 0.07947661053540922, 0.09565086416943475, -0.24435741115557058, -0.005649106376696118, -0.2140864849139308, -0.1604691579353151, -0.1581321030504579, 0.02705726235411888, -0.08578906213936767, -0.09254539195653917, 0.3710672878159405, 0.1876511875604994, 0.1829900905248969, 0.02807770505666646, 0.2805457285410443, 0.08717949075088295, 0.16037262604994224, 0.013278208201924381, 0.3531322964402132, 0.10574085451121074, 0.054748066297602344, -0.1781735177849674, 0.0805194288827912, -0.096855649946604] |
707.4212 | Analysis of two-dimensional high-energy photoelectron momentum
distributions in single ionization of atoms by intense laser pulses | We analyzed the two-dimensional (2D) electron momentum distributions of
high-energy photoelectrons of atoms in an intense laser field using the
second-order strong field approximation (SFA2). The SFA2 accounts for the
rescattering of the returning electron with the target ion to first order and
its validity is established by comparing with results obtained by solving the
time-dependent Schr\"{o}dinger equation (TDSE) for short pulses. By analyzing
the SFA2 theory, we confirmed that the yield along the back rescattered ridge
(BRR) in the 2D momentum spectra can be interpreted as due to the elastic
scattering in the backward directions by the returning electron wave packet.
The characteristics of the extracted electron wave packets for different laser
parameters are analyzed, including their dependence on the laser intensity and
pulse duration. For long pulses we also studied the wave packets from the first
and the later returns.
| physics.atom-ph | we analyzed the twodimensional 2d electron momentum distributions of highenergy photoelectrons of atoms in an intense laser field using the secondorder strong field approximation sfa2 the sfa2 accounts for the rescattering of the returning electron with the target ion to first order and its validity is established by comparing with results obtained by solving the timedependent schrodinger equation tdse for short pulses by analyzing the sfa2 theory we confirmed that the yield along the back rescattered ridge brr in the 2d momentum spectra can be interpreted as due to the elastic scattering in the backward directions by the returning electron wave packet the characteristics of the extracted electron wave packets for different laser parameters are analyzed including their dependence on the laser intensity and pulse duration for long pulses we also studied the wave packets from the first and the later returns | [['we', 'analyzed', 'the', 'twodimensional', '2d', 'electron', 'momentum', 'distributions', 'of', 'highenergy', 'photoelectrons', 'of', 'atoms', 'in', 'an', 'intense', 'laser', 'field', 'using', 'the', 'secondorder', 'strong', 'field', 'approximation', 'sfa2', 'the', 'sfa2', 'accounts', 'for', 'the', 'rescattering', 'of', 'the', 'returning', 'electron', 'with', 'the', 'target', 'ion', 'to', 'first', 'order', 'and', 'its', 'validity', 'is', 'established', 'by', 'comparing', 'with', 'results', 'obtained', 'by', 'solving', 'the', 'timedependent', 'schrodinger', 'equation', 'tdse', 'for', 'short', 'pulses', 'by', 'analyzing', 'the', 'sfa2', 'theory', 'we', 'confirmed', 'that', 'the', 'yield', 'along', 'the', 'back', 'rescattered', 'ridge', 'brr', 'in', 'the', '2d', 'momentum', 'spectra', 'can', 'be', 'interpreted', 'as', 'due', 'to', 'the', 'elastic', 'scattering', 'in', 'the', 'backward', 'directions', 'by', 'the', 'returning', 'electron', 'wave', 'packet', 'the', 'characteristics', 'of', 'the', 'extracted', 'electron', 'wave', 'packets', 'for', 'different', 'laser', 'parameters', 'are', 'analyzed', 'including', 'their', 'dependence', 'on', 'the', 'laser', 'intensity', 'and', 'pulse', 'duration', 'for', 'long', 'pulses', 'we', 'also', 'studied', 'the', 'wave', 'packets', 'from', 'the', 'first', 'and', 'the', 'later', 'returns']] | [-0.09834984295860484, 0.16484692387545602, -0.08087090410056039, 0.09348157073558033, 0.00865068869061873, -0.08752183164273139, 0.004601473379781811, 0.41353176250843937, -0.2576069374057189, -0.2520710335372993, 0.01477907796006676, -0.30736529441635635, -0.035921117684371034, 0.23115270229345056, 0.06531152293794382, 0.09801883538438887, 0.03945329053406144, -0.020645201193090056, -0.05372551126687617, -0.17101754143450434, 0.2935177776536209, 0.10185108374161514, 0.26688481891744203, 0.05020452496713736, 0.11530485103877497, 0.10864826192764539, -0.013145191575282477, -0.012721958006141891, -0.11058630183049925, 0.05173615333755356, 0.21691910276012363, 0.04184846446560827, 0.2230115944132681, -0.5013653148411655, -0.253147086758219, -0.02897345880866313, 0.13590254280125905, 0.14519077066568212, -0.07078540158658092, -0.33998767689237713, 0.01362156735169111, -0.11526039585759731, -0.16378889477100145, -0.021022376640450577, 0.028493404698322043, 0.1350931225174015, -0.2361552270365433, 0.05846535630051119, 0.013239955338551072, 0.0026235838000938086, -0.09815247925933004, -0.07475234780618002, -0.037841124822464316, 0.07111778789081834, 0.10451667288049374, 0.05355124937986929, 0.10406429988568203, -0.11373303827672253, -0.09553902522450916, 0.3868220920943406, -0.10209308627215673, -0.12761649951825746, 0.10454549675177731, -0.1872080622542597, -0.006230084305878361, 0.22382718442060368, 0.14453245300150305, 0.10877771633611598, -0.1399575523592689, 0.023793602149530222, -0.019756431823033136, 0.15389462357726047, 0.15023230131335136, 0.04443119987386318, 0.16524247414576756, 0.1241484018309947, -0.01042172914161019, 0.121668034560366, -0.16361920357990065, -0.07286298823949526, -0.26836682362219605, -0.10347290878498953, -0.2003340390264909, 0.042163259022755216, -0.03975430298500291, -0.08962111128166213, 0.45128569295170756, 0.11614793583809753, 0.15719006695082857, -0.014169561374984997, 0.29538244368429756, 0.22966861565397317, 0.011713503881252672, 0.06798407632503396, 0.2528548920658273, 0.16907130714348503, 0.13046075779170743, -0.2770901816851184, 0.047689953468031655, 0.04229333950862498] |
707.4213 | A Batalin-Vilkovisky Algebra structure on the Hochschild Cohomology of
Truncated Polynomials | The main result of this paper is to calculate the Batalin-Vilkovisky
structure of $HH^*(C^*(\mathbf{K}P^n;R);C^*(\mathbf{K}P^n;R))$ for $
\mathbf{K}=\mathbb{C}$ and $\mathbb{H}$, and $R=\mathbb{Z}$ and any field; and
shows that in the special case when $M=\mathbb{C}P^1=S^2$, and $R=\mathbb{Z}$,
this structure can not be identified with the BV-structure of
$\mathbb{H}_*(LS^2;\mathbb{Z})$ computed by Luc Memichi in \cite{menichi2}.
However, the induced Gerstenhaber structures are still identified in this case.
Moreover, according to a recent work of Y.Felix and J.Thomas
\cite{felix--thomas}, the main result of the present paper eventually
calculates the BV-structure of the rational loop homology,
$\mathbb{H}_*(L\mathbb{C}P^n;\mathbb{Q})$ and
$\mathbb{H}_*(L\mathbb{H}P^n;\mathbb{Q})$, of projective spaces.
| math.AT math.GT | the main result of this paper is to calculate the batalinvilkovisky structure of hhcmathbfkpnrcmathbfkpnr for mathbfkmathbbc and mathbbh and rmathbbz and any field and shows that in the special case when mmathbbcp1s2 and rmathbbz this structure can not be identified with the bvstructure of mathbbh_ls2mathbbz computed by luc memichi in citemenichi2 however the induced gerstenhaber structures are still identified in this case moreover according to a recent work of yfelix and jthomas citefelixthomas the main result of the present paper eventually calculates the bvstructure of the rational loop homology mathbbh_lmathbbcpnmathbbq and mathbbh_lmathbbhpnmathbbq of projective spaces | [['the', 'main', 'result', 'of', 'this', 'paper', 'is', 'to', 'calculate', 'the', 'batalinvilkovisky', 'structure', 'of', 'hhcmathbfkpnrcmathbfkpnr', 'for', 'mathbfkmathbbc', 'and', 'mathbbh', 'and', 'rmathbbz', 'and', 'any', 'field', 'and', 'shows', 'that', 'in', 'the', 'special', 'case', 'when', 'mmathbbcp1s2', 'and', 'rmathbbz', 'this', 'structure', 'can', 'not', 'be', 'identified', 'with', 'the', 'bvstructure', 'of', 'mathbbh_ls2mathbbz', 'computed', 'by', 'luc', 'memichi', 'in', 'citemenichi2', 'however', 'the', 'induced', 'gerstenhaber', 'structures', 'are', 'still', 'identified', 'in', 'this', 'case', 'moreover', 'according', 'to', 'a', 'recent', 'work', 'of', 'yfelix', 'and', 'jthomas', 'citefelixthomas', 'the', 'main', 'result', 'of', 'the', 'present', 'paper', 'eventually', 'calculates', 'the', 'bvstructure', 'of', 'the', 'rational', 'loop', 'homology', 'mathbbh_lmathbbcpnmathbbq', 'and', 'mathbbh_lmathbbhpnmathbbq', 'of', 'projective', 'spaces']] | [-0.1226808526774957, 0.07327436233892859, -0.06717826494769681, 0.0368775415672211, -0.04279580605604375, -0.056147900371191405, 0.0019108633776860578, 0.34064699625152917, -0.30560945814275847, -0.2661571809730958, 0.11842886887496293, -0.18523540056499077, -0.21279314264566415, 0.19223256843785444, -0.1170349326982562, -0.02795646932818705, 0.04569666346963329, 0.07910462325837996, -0.05744789376400322, -0.24891393875060158, 0.42436571858291117, 0.048240170414958684, 0.1993568984436847, 0.09223528790642463, 0.0756541969132654, 0.011644320689984375, -0.059532881315265386, 0.03066041855717707, -0.13701565157099962, 0.1480455758802626, 0.2528369529505393, 0.07500770304440743, 0.1964834242271969, -0.3899588660514426, -0.15329887951901627, 0.11497576786426916, 0.15241886384319514, 0.0801621110488971, -0.008183554320740291, -0.2617070338012473, 0.14671101500945433, -0.16301578358702717, -0.11769638380723163, -0.0607897469031048, 0.021264458675259015, 0.008021168281889654, -0.218387571841179, 0.016125152533363905, 0.11389769765637106, 0.05870633221985329, -0.07263542583677918, -0.07871963201268088, -0.059110844105903414, 0.13922634043272064, 0.043858778909669216, 0.09626640045150582, 0.05885676061734557, -0.10640977371007293, -0.12760180946705596, 0.4041528616189247, -0.05463036562737432, -0.1678302098464753, 0.12004663729818449, -0.1956021824707499, -0.17697269148525915, 0.07913856385303439, 0.09737786402304967, 0.14767786737952737, -0.08767928691928059, 0.13492911333464908, -0.04669438673382891, 0.10234574373212776, 0.06287282639338325, -0.01958068490715786, 0.12644702893504428, 0.09995004851537358, 0.04628998394833789, 0.14925565812154673, -0.04757549987906324, -0.07860968708978146, -0.3122359199582466, -0.22165732701042934, -0.1370146212838812, 0.06479247080157317, -0.03191860880404073, -0.17420011029268304, 0.41842279058238047, 0.12111436032379667, 0.2118503699090243, 0.07113220522712384, 0.2738761836441145, 0.09243175627974172, 0.06035439111846721, 0.057425117768746405, 0.2164420415536456, 0.16436121974506282, 0.04884134806759123, -0.17408600299330873, 0.047290751163104904, 0.0968313337680662] |
707.4214 | Ergodic BSDEs and Optimal Ergodic Control in Banach Spaces | In this paper we introduce a new kind of Backward Stochastic Differential
Equations, called ergodic BSDEs, which arise naturally in the study of optimal
ergodic control. We study the existence, uniqueness and regularity of solution
to ergodic BSDEs. Then we apply these results to the optimal ergodic control of
a Banach valued stochastic state equation. We also establish the link between
the ergodic BSDEs and the associated Hamilton-Jacobi-Bellman equation.
Applications are given to ergodic control of stochastic partial differential
equations.
| math.PR | in this paper we introduce a new kind of backward stochastic differential equations called ergodic bsdes which arise naturally in the study of optimal ergodic control we study the existence uniqueness and regularity of solution to ergodic bsdes then we apply these results to the optimal ergodic control of a banach valued stochastic state equation we also establish the link between the ergodic bsdes and the associated hamiltonjacobibellman equation applications are given to ergodic control of stochastic partial differential equations | [['in', 'this', 'paper', 'we', 'introduce', 'a', 'new', 'kind', 'of', 'backward', 'stochastic', 'differential', 'equations', 'called', 'ergodic', 'bsdes', 'which', 'arise', 'naturally', 'in', 'the', 'study', 'of', 'optimal', 'ergodic', 'control', 'we', 'study', 'the', 'existence', 'uniqueness', 'and', 'regularity', 'of', 'solution', 'to', 'ergodic', 'bsdes', 'then', 'we', 'apply', 'these', 'results', 'to', 'the', 'optimal', 'ergodic', 'control', 'of', 'a', 'banach', 'valued', 'stochastic', 'state', 'equation', 'we', 'also', 'establish', 'the', 'link', 'between', 'the', 'ergodic', 'bsdes', 'and', 'the', 'associated', 'hamiltonjacobibellman', 'equation', 'applications', 'are', 'given', 'to', 'ergodic', 'control', 'of', 'stochastic', 'partial', 'differential', 'equations']] | [-0.20035267549101263, 0.041621990990824996, -0.07441762571688741, 0.13868547031161144, -0.13376352987252177, -0.14870665257330984, 0.07100232612719992, 0.2974506500788266, -0.42707390319556, -0.1428779473004397, 0.17733644704858306, -0.27415486637619324, -0.195732700265944, 0.18609816684038377, -0.1886427441611886, 0.13923561025294476, 0.04964582808315754, 0.01977159413509071, -0.08334585356060416, -0.20152836844499689, 0.37939906856627204, -0.08679201842751354, 0.20010282073635607, 0.0023836774635128677, 0.2733387457439676, 0.01998151043080725, -0.0513205363356974, 0.005327241847408004, -0.24719501968938856, 0.1207644887152128, 0.3490677320631221, 0.06671104629058391, 0.33870616895146666, -0.38499804185703396, -0.17455831905826927, 0.1426695697940886, 0.1152213532524911, 0.06945577543374384, -0.08109743839595467, -0.32628692525904623, 0.09194121486943914, -0.1376588315353729, -0.16650200127915013, -0.07784476265369449, -0.08515987035352737, 0.16019401208613998, -0.3208257942111231, 0.07819651648424042, 0.1101651714037871, 0.019973735281382687, -0.14643903955002316, -0.008108703355537728, -0.019843731104629114, 0.061268799914978446, 0.07407837518840096, -0.04965552719659172, 0.07851660575252026, -0.029259904110222123, -0.19970280476263724, 0.27456319382181393, -0.1305287670227699, -0.31704452394042165, 0.16459554171597118, -0.16651078172726558, -0.181760039384244, 0.19049548166804015, 0.23367035661358387, 0.15163250698533376, -0.2593286801653448, 0.12287510764872422, -0.10433572612237185, 0.084488918306306, 0.030630348064005376, 0.06269927215762436, 0.029999030870385468, 0.12121468265540898, 0.2357477605866734, 0.15755342564953026, 0.05713043587675202, -0.23188404152169823, -0.3544826710596681, -0.19023108082765247, -0.04082353814737871, 0.15347297118860298, -0.09318677043629578, -0.1619630289147608, 0.3308901752345264, 0.18924958704737946, 0.06508361916057766, 0.15105785430787363, 0.20539956594002434, 0.272931226703804, -0.16053711337735876, 0.07632897772127763, 0.14575060090282932, 0.2589531140838517, 0.17547824321081862, -0.2782957542745862, 0.06242342010955326, 0.191164412611397] |
707.4215 | Orbit inequivalent actions of non-amenable groups | Consider two free measure preserving group actions $\Gamma \actson (X, \mu),
\Delta \actson (X, \mu)$, and a measure preserving action $\Delta \actson^a (Z,
\nu)$ where $(X, \mu), (Z, \nu)$ are standard probability spaces. We show how
to construct free measure preserving actions $\Gamma \actson^c (Y, m)$, $\Delta
\actson^d (Y, m)$ on a standard probability space such that $E_{\Delta}^d
\subset E_{\Gamma}^c$ and $d$ has $a$ as a factor. This generalizes the
standard notion of co-induction of actions of groups from actions of subgroups.
We then use this construction to show that if $\Gamma$ is a countable
non-amenable group, then $\Gamma$ admits continuum many orbit inequivalent
free, measure preserving, ergodic actions on a standard probability space.
| math.GR | consider two free measure preserving group actions gamma actson x mu delta actson x mu and a measure preserving action delta actsona z nu where x mu z nu are standard probability spaces we show how to construct free measure preserving actions gamma actsonc y m delta actsond y m on a standard probability space such that e_deltad subset e_gammac and d has a as a factor this generalizes the standard notion of coinduction of actions of groups from actions of subgroups we then use this construction to show that if gamma is a countable nonamenable group then gamma admits continuum many orbit inequivalent free measure preserving ergodic actions on a standard probability space | [['consider', 'two', 'free', 'measure', 'preserving', 'group', 'actions', 'gamma', 'actson', 'x', 'mu', 'delta', 'actson', 'x', 'mu', 'and', 'a', 'measure', 'preserving', 'action', 'delta', 'actsona', 'z', 'nu', 'where', 'x', 'mu', 'z', 'nu', 'are', 'standard', 'probability', 'spaces', 'we', 'show', 'how', 'to', 'construct', 'free', 'measure', 'preserving', 'actions', 'gamma', 'actsonc', 'y', 'm', 'delta', 'actsond', 'y', 'm', 'on', 'a', 'standard', 'probability', 'space', 'such', 'that', 'e_deltad', 'subset', 'e_gammac', 'and', 'd', 'has', 'a', 'as', 'a', 'factor', 'this', 'generalizes', 'the', 'standard', 'notion', 'of', 'coinduction', 'of', 'actions', 'of', 'groups', 'from', 'actions', 'of', 'subgroups', 'we', 'then', 'use', 'this', 'construction', 'to', 'show', 'that', 'if', 'gamma', 'is', 'a', 'countable', 'nonamenable', 'group', 'then', 'gamma', 'admits', 'continuum', 'many', 'orbit', 'inequivalent', 'free', 'measure', 'preserving', 'ergodic', 'actions', 'on', 'a', 'standard', 'probability', 'space']] | [-0.15243260265080208, 0.1869510034304283, -0.07518944974322248, 0.07299215286231062, -0.0606385741442647, -0.1684064021581835, 0.14335057732367187, 0.42327142441901594, -0.3151811307270524, -0.17360203559382245, 0.04111890422197383, -0.3099888050330615, -0.06244643949348172, 0.14461724882264015, -0.12261767464544658, -0.01929966667068934, 0.03612376174487925, 0.15707743641228303, -0.11324222687067925, -0.18750099373613954, 0.3477373317977704, -0.06638198571894831, 0.21470228891067822, -0.039822512887281565, 0.15782833140377606, 0.030037267774411843, -0.07061840325098383, -0.0027875662743917094, -0.21799058310429612, 0.06675736265205735, 0.21175708961801246, 0.10783695098474075, 0.23286495347498753, -0.20572549230290935, -0.21483725450111665, 0.25103546405604127, 0.04335737186099548, -0.11174626332289035, 0.0042769920450438734, -0.3372429948761512, 0.12168761980378094, -0.17499947963162846, -0.10375813368297772, -0.07771514392022146, 0.11790898457648011, -0.03914573919369813, -0.2962946525407494, -0.01414987841330537, 0.06517308934617343, 0.02947289949077942, 0.027762729811285615, -0.09369913140021333, -0.06707077817948655, 0.13753967298143502, 0.06404157019745764, 0.1472684029925512, 0.1565956058869258, -0.01663737249381225, -0.12368457155182548, 0.43528291379708217, -0.13716869384323785, -0.2842148828380015, 0.17587943908698653, -0.25144826144902804, -0.20981195981725367, 0.1511230239764266, 0.11500012369638463, 0.12696795775597797, -0.0790954355423877, 0.30354082127157256, -0.10147891641346686, 0.15163476478496413, 0.0722320681617279, 0.03366363183552519, 0.0891963812061201, 0.10245174315219763, 0.17647486268873797, 0.026164826518351877, -0.0157805220565733, 0.04442681192576355, -0.3703660361400438, -0.1943462309067099, -0.09230096501067554, 0.18949907750677353, -0.09501617534247381, -0.1437182689124052, 0.28038179591605694, 0.02354805226172876, 0.1858735171471372, 0.14085748347393964, 0.18615252276831265, 0.0671350771738558, -0.03332594938900903, 0.07269249697549081, 0.022040134539332137, 0.1538052612001401, -0.11442680285235338, -0.1568051352605668, -0.050199115439531726, 0.1699030735453061] |
707.4216 | Nature of the metal-nonmetal transition in metal-ammonia solutions. I.
Solvated electrons at low metal concentrations | Using a theory of polarizable fluids, we extend a variational treatment of an
excess electron to the many-electron case corresponding to finite metal
concentrations in metal-ammonia solutions (MAS). We evaluate dielectric,
optical, and thermodynamical properties of MAS at low metal concentrations. Our
semi-analytical calculations based on a mean-spherical approximation correlate
well with the experimental data on the concentration and the temperature
dependencies of the dielectric constant and the optical absorption spectrum.
The properties are found to be mainly determined by the induced dipolar
interactions between localized solvated electrons, which result in the two main
effects: the dispersion attractions between the electrons and a sharp increase
in the static dielectric constant of the solution. The first effect provides a
classical phase separation for the light alkali metal solutes (Li, Na, K) below
a critical temperature. The second effect leads to a dielectric instability,
i.e., polarization catastrophe, which is the onset of metallization. The locus
of the calculated critical concentrations is in a good agreement with the
experimental phase diagram of Na-NH3 solutions. The proposed mechanism of the
metal-nonmetal transition is quite general and may occur in systems involving
self-trapped quantum quasiparticles.
| cond-mat.stat-mech cond-mat.str-el | using a theory of polarizable fluids we extend a variational treatment of an excess electron to the manyelectron case corresponding to finite metal concentrations in metalammonia solutions mas we evaluate dielectric optical and thermodynamical properties of mas at low metal concentrations our semianalytical calculations based on a meanspherical approximation correlate well with the experimental data on the concentration and the temperature dependencies of the dielectric constant and the optical absorption spectrum the properties are found to be mainly determined by the induced dipolar interactions between localized solvated electrons which result in the two main effects the dispersion attractions between the electrons and a sharp increase in the static dielectric constant of the solution the first effect provides a classical phase separation for the light alkali metal solutes li na k below a critical temperature the second effect leads to a dielectric instability ie polarization catastrophe which is the onset of metallization the locus of the calculated critical concentrations is in a good agreement with the experimental phase diagram of nanh3 solutions the proposed mechanism of the metalnonmetal transition is quite general and may occur in systems involving selftrapped quantum quasiparticles | [['using', 'a', 'theory', 'of', 'polarizable', 'fluids', 'we', 'extend', 'a', 'variational', 'treatment', 'of', 'an', 'excess', 'electron', 'to', 'the', 'manyelectron', 'case', 'corresponding', 'to', 'finite', 'metal', 'concentrations', 'in', 'metalammonia', 'solutions', 'mas', 'we', 'evaluate', 'dielectric', 'optical', 'and', 'thermodynamical', 'properties', 'of', 'mas', 'at', 'low', 'metal', 'concentrations', 'our', 'semianalytical', 'calculations', 'based', 'on', 'a', 'meanspherical', 'approximation', 'correlate', 'well', 'with', 'the', 'experimental', 'data', 'on', 'the', 'concentration', 'and', 'the', 'temperature', 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707.4217 | Energy-momentum of a Cosmological Brane Model and the Gauge Hierarchy | We analyze the general covariant energy-momentum tensor of the gravitational
system in genreal five-dimensional cosmological brane-world models. Then
through calculating this energy-momentum for the cosmological generalization of
the Randall-Sundrum model, which includes the original RS model as the static
limit, we are able to show that the weakness of the gravitation on the
"visible" brane is a general feature of this model. This is the origin of the
gauge hierarchy from a gravitational point of view. Our results are also
consistent with the fact that a gravitational system has vanishing total
energy.
| hep-th gr-qc | we analyze the general covariant energymomentum tensor of the gravitational system in genreal fivedimensional cosmological braneworld models then through calculating this energymomentum for the cosmological generalization of the randallsundrum model which includes the original rs model as the static limit we are able to show that the weakness of the gravitation on the visible brane is a general feature of this model this is the origin of the gauge hierarchy from a gravitational point of view our results are also consistent with the fact that a gravitational system has vanishing total energy | [['we', 'analyze', 'the', 'general', 'covariant', 'energymomentum', 'tensor', 'of', 'the', 'gravitational', 'system', 'in', 'genreal', 'fivedimensional', 'cosmological', 'braneworld', 'models', 'then', 'through', 'calculating', 'this', 'energymomentum', 'for', 'the', 'cosmological', 'generalization', 'of', 'the', 'randallsundrum', 'model', 'which', 'includes', 'the', 'original', 'rs', 'model', 'as', 'the', 'static', 'limit', 'we', 'are', 'able', 'to', 'show', 'that', 'the', 'weakness', 'of', 'the', 'gravitation', 'on', 'the', 'visible', 'brane', 'is', 'a', 'general', 'feature', 'of', 'this', 'model', 'this', 'is', 'the', 'origin', 'of', 'the', 'gauge', 'hierarchy', 'from', 'a', 'gravitational', 'point', 'of', 'view', 'our', 'results', 'are', 'also', 'consistent', 'with', 'the', 'fact', 'that', 'a', 'gravitational', 'system', 'has', 'vanishing', 'total', 'energy']] | [-0.12916391148426376, 0.07296513013316544, -0.09037429176700804, 0.10135651602292085, -0.10090724868024444, -0.091855159075419, -0.03407837627813793, 0.2758342956428181, -0.2096062084598528, -0.2552825866860675, 0.05084377589154538, -0.2569886628067592, -0.1713179820831251, 0.13085803906637972, -0.03414618100582079, 0.007586720895922773, 0.010776285669295588, 0.07181854965676973, -0.07673279322673576, -0.22032335790508722, 0.4019387262863117, 0.09218689564119444, 0.2514059436149322, 0.039980039020979796, 0.1313770257939513, -0.036374867282255176, -0.025303073882401644, 0.04418705424657194, -0.10455229847802612, 0.09723022756176991, 0.15499866965335088, 0.1310763878614775, 0.18952904713268465, -0.37828102826580895, -0.2660276228869027, 0.10788267792540264, 0.1063094664682317, 0.20075923701170012, -0.02369929976623178, -0.29086688124052773, 0.10383580379433684, -0.2151768743930446, -0.12240088924606955, -0.027967224358120463, -0.018288163079337758, -0.051843564527539104, -0.22855524589809087, 0.09685269969094616, 0.03801424527070024, -0.037276322635339705, -0.13867824627495892, -0.06266183917830279, -0.053680709371302315, 0.049303152091842106, 0.13600361891280205, 0.04083221087457387, 0.10748845775314904, -0.14474579259039383, -0.09387848613486922, 0.4465106971316285, -0.12959440602603686, -0.23182249345540346, 0.15807826055602714, -0.1287429188275812, -0.12615639746066307, 0.06598531217621333, 0.1394265964755195, 0.14379580612652576, -0.17701046246584956, 0.1814740245629634, -0.08258402013926061, 0.1396655352433739, 0.03899095751150706, 0.04281994084965765, 0.3061960276298143, 0.14737145991287204, 0.016077361980473603, 0.14002137435958362, -0.07830969023948106, -0.11594441641572413, -0.42733348725916265, -0.1440529326478449, -0.172935029061941, 0.06690239821366228, -0.1656627766634491, -0.16387718810525898, 0.4072493948042393, 0.19238937196864203, 0.14735024661954063, 0.09867112274194689, 0.29550209166584435, 0.10766579011061157, 0.0714873404793472, 0.05087818035466985, 0.350738586827212, 0.11088177661032794, 0.12808637876590653, -0.22521766640404547, -0.04505181730121047, 0.10081965674820183] |
707.4218 | N=1/2 supergravity with matter in four Euclidean dimensions | An N=1/2 supergravity in four Euclidean spacetime dimensions, coupled to both
vector- and scalar-multiplet matter, is constructed for the first time. We
begin with the standard (1,1) conformally extended supergravity in four
Euclidean dimensions, and freeze out the graviphoton field strength to an
arbitrary (fixed) self-dual field (the so-called C-deformation). Though a
consistency of such procedure with local supersymmetry is not guaranteed, we
find a simple consistent set of algebraic constraints that reduce the local
supersymmetry by 3/4 and eliminate the corresponding gravitini. The final field
theory (after the superconformal gauge-fixing) has the residual local N=(0,1/2)
or just N=1/2 supersymmetry with only one chiral gravitino as the corresponding
gauge field. Our theory is not `Lorentz'-invariant because of the non-vanishing
self-dual graviphoton vacuum expectation value, which is common to the
C-deformed N=1/2 rigidly supersymmetric field theories constructed in a
non-anticommutative superspace.
| hep-th | an n12 supergravity in four euclidean spacetime dimensions coupled to both vector and scalarmultiplet matter is constructed for the first time we begin with the standard 11 conformally extended supergravity in four euclidean dimensions and freeze out the graviphoton field strength to an arbitrary fixed selfdual field the socalled cdeformation though a consistency of such procedure with local supersymmetry is not guaranteed we find a simple consistent set of algebraic constraints that reduce the local supersymmetry by 34 and eliminate the corresponding gravitini the final field theory after the superconformal gaugefixing has the residual local n012 or just n12 supersymmetry with only one chiral gravitino as the corresponding gauge field our theory is not lorentzinvariant because of the nonvanishing selfdual graviphoton vacuum expectation value which is common to the cdeformed n12 rigidly supersymmetric field theories constructed in a nonanticommutative superspace | [['an', 'n12', 'supergravity', 'in', 'four', 'euclidean', 'spacetime', 'dimensions', 'coupled', 'to', 'both', 'vector', 'and', 'scalarmultiplet', 'matter', 'is', 'constructed', 'for', 'the', 'first', 'time', 'we', 'begin', 'with', 'the', 'standard', '11', 'conformally', 'extended', 'supergravity', 'in', 'four', 'euclidean', 'dimensions', 'and', 'freeze', 'out', 'the', 'graviphoton', 'field', 'strength', 'to', 'an', 'arbitrary', 'fixed', 'selfdual', 'field', 'the', 'socalled', 'cdeformation', 'though', 'a', 'consistency', 'of', 'such', 'procedure', 'with', 'local', 'supersymmetry', 'is', 'not', 'guaranteed', 'we', 'find', 'a', 'simple', 'consistent', 'set', 'of', 'algebraic', 'constraints', 'that', 'reduce', 'the', 'local', 'supersymmetry', 'by', '34', 'and', 'eliminate', 'the', 'corresponding', 'gravitini', 'the', 'final', 'field', 'theory', 'after', 'the', 'superconformal', 'gaugefixing', 'has', 'the', 'residual', 'local', 'n012', 'or', 'just', 'n12', 'supersymmetry', 'with', 'only', 'one', 'chiral', 'gravitino', 'as', 'the', 'corresponding', 'gauge', 'field', 'our', 'theory', 'is', 'not', 'lorentzinvariant', 'because', 'of', 'the', 'nonvanishing', 'selfdual', 'graviphoton', 'vacuum', 'expectation', 'value', 'which', 'is', 'common', 'to', 'the', 'cdeformed', 'n12', 'rigidly', 'supersymmetric', 'field', 'theories', 'constructed', 'in', 'a', 'nonanticommutative', 'superspace']] | [-0.14002968942624155, 0.1936451969534434, -0.026734214598979174, 0.09563472278647288, -0.08811657372216293, -0.17377388699279323, -0.053058818290282014, 0.2987554636477989, -0.1749788613345841, -0.26772082442703254, 0.10399846798131909, -0.23509024361651526, -0.12693343626124526, 0.052553764753465126, -0.05556724080136114, 0.04603759473339267, -0.04594007502038059, 0.11704615312526478, -0.1256621567741458, -0.33544764017862994, 0.3113544337998695, -0.0013510020871232026, 0.24209907832453503, -0.02082270421903499, 0.12572705947936777, 0.022729432537053867, 0.002808337621594759, 0.022307013219263216, -0.09194818924948697, 0.0776323778894696, 0.19641909434249366, 0.08622706910241804, 0.1409305346463501, -0.4373308903585276, -0.19583399492540282, 0.1405114872707394, 0.17759673717520097, 0.14408322569513082, 0.012199492212452919, -0.28552105971510067, 0.07573492943316046, -0.1297478101974231, -0.17644283167055952, -0.08705240165488455, 0.008509726291624354, -0.15268767354534055, -0.28071799794174596, 0.060340756157848195, 0.010507158054732275, 0.05480213550660406, -0.052539605297229806, -0.08788387202504805, -0.0986314730677944, 0.02158034529135882, 0.12774712877878308, 0.1136729599781382, 0.13798264436845253, -0.17948508527755302, -0.13211327829962446, 0.34962845762280653, -0.08836690573205315, -0.2400299712291572, 0.12389824575622206, -0.10985947433301677, -0.17908746696818267, 0.14674748652308744, 0.04959995480148924, 0.15552225758586705, -0.1506450925987676, 0.24386819368304793, -0.0320241361462178, 0.16291572160961065, 0.10197566162087839, 0.022553199560578614, 0.25752508052264467, 0.060717752529648096, 0.07951017604362437, 0.09237647513743408, -0.010899460167508491, -0.1302002925412172, -0.4598883380093714, -0.11883192408377861, -0.12815819435623765, 0.10191238650998584, -0.17077186408617964, -0.17647940891176245, 0.3677258169428058, 0.11488560844131195, 0.16398606455143894, 0.09202075135013782, 0.20426129329487355, 0.12464085888437482, 0.11339150496544384, 0.0647984246679167, 0.2883276939664009, 0.1609231434969816, 0.05900262009155304, -0.22853470322196745, -0.17973447671282466, 0.14069383500320634] |
707.4219 | Real embeddings, eta invariant and Chern-Simons current | We present an alternate proof of the Bismut-Zhang localization formula for
$\eta$-invariants without using the analytic techniques developed by
Bismut-Lebeau. A Riemann-Roch property for Chern-Simons currents, which is of
independent interest, is established in due course.
| math.DG math.KT | we present an alternate proof of the bismutzhang localization formula for etainvariants without using the analytic techniques developed by bismutlebeau a riemannroch property for chernsimons currents which is of independent interest is established in due course | [['we', 'present', 'an', 'alternate', 'proof', 'of', 'the', 'bismutzhang', 'localization', 'formula', 'for', 'etainvariants', 'without', 'using', 'the', 'analytic', 'techniques', 'developed', 'by', 'bismutlebeau', 'a', 'riemannroch', 'property', 'for', 'chernsimons', 'currents', 'which', 'is', 'of', 'independent', 'interest', 'is', 'established', 'in', 'due', 'course']] | [-0.13872822314604288, 0.07467573603409822, -0.12254644330177042, 0.07961389699873204, -0.07424126578391427, -0.12374586113987283, 0.02972263532380263, 0.2917126942839887, -0.18665680387574765, -0.23796284586812058, 0.11061795106636257, -0.15697643991249302, -0.1852415251131687, 0.2534478074974484, -0.12832572143007484, 0.036953810757646956, 0.015342954500940524, 0.028060342754340835, -0.08227477740082476, -0.20390033503968474, 0.3155911540509098, 0.005947775181589855, 0.2605905239211602, 0.12962335834486616, 0.11894703889265656, 0.11901621523106264, -0.058534888136718005, -0.02303782299471398, -0.15426098618708137, 0.17684147393123972, 0.28275364903189865, 0.09062680335106658, 0.22814409755584267, -0.43138913556726444, -0.17065726656518462, 0.059329828868309654, 0.13472878844994637, 0.12556132926773797, -0.10043732715874082, -0.29178355349641705, 0.10656763876209475, -0.1913267783820629, -0.1779906888000874, -0.09241751563321385, 0.05562511636364636, -0.016765898585112557, -0.2817440840881318, 0.03231241491933664, 0.12492775929341507, 0.13679362404056722, -0.046176367303511746, -0.08533256904532512, 0.03816333854208804, 0.10722656820952478, 0.06594145912418349, 0.052843713369737894, 0.060089870588853955, -0.11204325420516802, -0.16853019338062344, 0.2765502867340628, -0.07566680270247161, -0.21780573535296652, 0.13334484492790782, -0.04551156619304998, -0.15198975071931878, 0.12591972905728552, 0.04450672986503276, 0.1585024440686943, -0.1488174588109056, 0.18076240042379746, -0.047455611975035734, 0.09679472459376687, 0.062415919809912644, -0.0035441481611794895, 0.16980167411060798, 0.09477986732963473, 0.08322444351183043, 0.16497538714773125, -0.015121302153501246, -0.04523093731970423, -0.30723296775896514, -0.20261672366824415, -0.23117568576708436, 0.10706202978164786, -0.0809267906523827, -0.161941467732605, 0.37396645253627664, 0.1259677407797426, 0.14037210608108175, 0.08757689611067893, 0.2826015141068233, 0.1652009332287384, 0.05073833852333741, 0.003106962268551191, 0.19173935288725058, 0.19876815441400847, 0.0769438389947431, -0.1371852154552471, 0.06713430381690462, 0.2560758020780567] |
707.422 | The BOES spectropolarimeter for Zeeman measurements of stellar magnetic
fields | We introduce a new polarimeter installed on the high-resolution fiber-fed
echelle spectrograph (called BOES) of the 1.8-m telescope at the Bohyunsan
Optical Astronomy Observatory, Korea. The instrument is intended to measure
stellar magnetic fields with high-resolution (R $\sim$ 60000)
spectropolarimetric observations of intrinsic polarization in spectral lines.
In this paper we describe the spectropolarimeter and present test observations
of the longitudinal magnetic fields in some well-studied F-B main sequence
magnetic stars (m_v < 8.8^m). The results demonstrate that the instrument has a
high precision ability of detecting the fields of these stars with typical
accuracies ranged from about 2G to a few tens of gauss.
| astro-ph | we introduce a new polarimeter installed on the highresolution fiberfed echelle spectrograph called boes of the 18m telescope at the bohyunsan optical astronomy observatory korea the instrument is intended to measure stellar magnetic fields with highresolution r sim 60000 spectropolarimetric observations of intrinsic polarization in spectral lines in this paper we describe the spectropolarimeter and present test observations of the longitudinal magnetic fields in some wellstudied fb main sequence magnetic stars m_v 88m the results demonstrate that the instrument has a high precision ability of detecting the fields of these stars with typical accuracies ranged from about 2g to a few tens of gauss | [['we', 'introduce', 'a', 'new', 'polarimeter', 'installed', 'on', 'the', 'highresolution', 'fiberfed', 'echelle', 'spectrograph', 'called', 'boes', 'of', 'the', '18m', 'telescope', 'at', 'the', 'bohyunsan', 'optical', 'astronomy', 'observatory', 'korea', 'the', 'instrument', 'is', 'intended', 'to', 'measure', 'stellar', 'magnetic', 'fields', 'with', 'highresolution', 'r', 'sim', '60000', 'spectropolarimetric', 'observations', 'of', 'intrinsic', 'polarization', 'in', 'spectral', 'lines', 'in', 'this', 'paper', 'we', 'describe', 'the', 'spectropolarimeter', 'and', 'present', 'test', 'observations', 'of', 'the', 'longitudinal', 'magnetic', 'fields', 'in', 'some', 'wellstudied', 'fb', 'main', 'sequence', 'magnetic', 'stars', 'm_v', '88m', 'the', 'results', 'demonstrate', 'that', 'the', 'instrument', 'has', 'a', 'high', 'precision', 'ability', 'of', 'detecting', 'the', 'fields', 'of', 'these', 'stars', 'with', 'typical', 'accuracies', 'ranged', 'from', 'about', '2g', 'to', 'a', 'few', 'tens', 'of', 'gauss']] | [-0.13040326955692413, 0.1443445713733896, -0.051015876506705984, 0.026742371417080555, -0.145263205962972, -0.10496385177472033, -0.012951670151848633, 0.4362903604543625, -0.16111305438411924, -0.4122248344983046, 0.09996764998672567, -0.306666446921344, -0.0411989587591961, 0.26816475415566504, -0.04316341071926917, -0.009000431019768048, 0.13861860076968485, -0.04244394175699339, -0.013895845875735037, -0.2236400138152441, 0.26068336165581757, 0.1443380009687434, 0.21398659749852064, -0.04511652079795917, 0.1501718363008247, -0.09576350065897433, -0.06849401535985705, -0.02991182788928899, -0.11838619617663845, 0.08248214614286553, 0.26511242230816817, 0.13308044264648253, 0.23899880775178856, -0.3429667179992136, -0.12592232485454027, 0.02160929792220346, 0.10329278427637362, -0.03868020327914005, -0.03961384829017334, -0.31999415250566715, 0.06056009825820533, -0.10477378166559412, -0.17163957239245065, 0.0036073785830432405, -0.030282073892661944, 0.05659489539595178, -0.23547154944613935, -0.029677135890009455, -0.07175242848349556, 0.2304375870153308, -0.10691753126649509, -0.1415450149260533, 0.013301564419704776, 0.0996190759111554, -0.03458912795255086, 0.08151296976183613, 0.0470602027221153, -0.1538512139187123, -0.02961985937033135, 0.36303455527656925, -0.15819711459111063, 0.0602456191532278, 0.14061876748187038, -0.28607045461495334, -0.17630058782658756, 0.11198479738623764, 0.2244871382135898, 0.17745765811280131, -0.18111085910081434, 0.059412617132833336, -0.011620581333632939, 0.21944100574518627, 0.08901017505335264, 0.07708291012610201, 0.28658774740492493, 0.14347720245579973, -0.01353106919514875, 0.08823306091149928, -0.36633487417174576, 0.0596233989792661, -0.23267293390101537, -0.1503201869961161, -0.1346851831924421, 0.08658110047018944, -0.08878223382397174, -0.11398035785756432, 0.4259234135612272, 0.2167019819572278, 0.14102369715244725, 0.014873137796082748, 0.3351748624118045, 0.016153580885237225, 0.14388169651927177, 0.014639681188362794, 0.3040836515756382, 0.2038224009850707, 0.19813985380684385, -0.18927253954909526, -0.06860686292818102, 0.019099827884929255] |
707.4221 | A comment on the matter-graviton coupling | We point out a generic inconsistency of the coupling of ordinary gravity as
described by general relativity with matter invariant under the subgroup of
unimodular diffeomorphisms (TDiffs), and some previously studied exceptions are
pointed out. The most general Lagrangian invariant under TDiff up to dimension
five operators is determined, and restrictions on parameters coming from
existing observations are studied in some cases.
| hep-th | we point out a generic inconsistency of the coupling of ordinary gravity as described by general relativity with matter invariant under the subgroup of unimodular diffeomorphisms tdiffs and some previously studied exceptions are pointed out the most general lagrangian invariant under tdiff up to dimension five operators is determined and restrictions on parameters coming from existing observations are studied in some cases | [['we', 'point', 'out', 'a', 'generic', 'inconsistency', 'of', 'the', 'coupling', 'of', 'ordinary', 'gravity', 'as', 'described', 'by', 'general', 'relativity', 'with', 'matter', 'invariant', 'under', 'the', 'subgroup', 'of', 'unimodular', 'diffeomorphisms', 'tdiffs', 'and', 'some', 'previously', 'studied', 'exceptions', 'are', 'pointed', 'out', 'the', 'most', 'general', 'lagrangian', 'invariant', 'under', 'tdiff', 'up', 'to', 'dimension', 'five', 'operators', 'is', 'determined', 'and', 'restrictions', 'on', 'parameters', 'coming', 'from', 'existing', 'observations', 'are', 'studied', 'in', 'some', 'cases']] | [-0.168390008246862, 0.11902508901462691, -0.05604603410255714, 0.10101669850629434, -0.08099167124887348, -0.18307268099676147, -0.00644789275820138, 0.31377099229206074, -0.23186805926942738, -0.28046402194705167, 0.12903351071634192, -0.2825303172967473, -0.127408170862673, 0.19515639554220635, -0.07357142748097416, 0.07363332226513655, 0.0006385419792572006, 0.07798314776241047, -0.13636770497885395, -0.26724829390400745, 0.39842440395570194, 0.027125001549110062, 0.17772877903380355, -0.007140382736936578, 0.10034086298747141, -0.04857271483748174, -0.08668468849825077, 0.0790408907257978, -0.13357941600204, 0.038174085929745534, 0.23626168007336434, 0.06581963647202757, 0.15186756944711335, -0.36923021184982824, -0.24306791739874198, 0.10757789795943459, 0.06351267171977851, 0.06303227228707954, -0.03521357931112718, -0.32799914882319875, 0.06309805550902593, -0.1359963488352836, -0.18710721187201923, -0.11019979595954789, 0.02433946527937641, -0.04841394183516014, -0.20502966440847661, 0.03296347625828425, 0.06260769652416472, 0.10865880660407368, -0.029591939896803168, -0.13975605204678523, -0.025222571185011356, 0.052586197599264806, 0.1396016797516495, 0.004186387807436165, 0.13600317563586792, -0.08692319496328653, -0.08667716923643087, 0.46525112624264886, -0.08098367155819643, -0.25719375577974746, 0.18959889454828177, -0.1476212598337624, -0.24490562428674492, 0.10358868861479349, 0.0688405455181711, 0.14669540660364216, -0.16872534305467957, 0.19893148649671424, -0.08433230967092954, 0.05925091178887371, 0.13491067708637872, 0.031167701369563698, 0.1931813143987636, 0.056979475145945785, 0.04660237642180663, 0.10537188414667474, 0.002048871544815722, -0.14268027407834766, -0.3637906839979477, -0.06621730383714569, -0.08525928123625087, 0.10733195408018398, -0.08384265837624104, -0.07859818467900889, 0.37176498453148077, 0.10695923786976787, 0.13899812560345307, 0.05437185002307667, 0.2051749255080692, 0.08363294824156299, 0.09950132871077197, 0.08127833309690238, 0.27834779297891, 0.16378763985636904, -0.030128572666712226, -0.1402663898952, -0.023177437278152, 0.09667479957560779] |
707.4222 | Long-range order in the A-like phase of superfluid 3He in aerogel | A mutual action of the random anisotropy brought in the superfluid 3He by
aerogel and of the global anisotropy caused by its deformation is considered.
Strong global anisotropy tends to suppress fluctuations of orientation of the
order parameter and stabilizes ABM order parameter. In a limit of vanishing
anisotropy these fluctuations are getting critical. It is argued that still in
a region of small fluctuations the average order parameter can acquire "robust"
component. This component maintains a long-range order even in a limit of
vanishing global anisotropy.
| cond-mat.dis-nn | a mutual action of the random anisotropy brought in the superfluid 3he by aerogel and of the global anisotropy caused by its deformation is considered strong global anisotropy tends to suppress fluctuations of orientation of the order parameter and stabilizes abm order parameter in a limit of vanishing anisotropy these fluctuations are getting critical it is argued that still in a region of small fluctuations the average order parameter can acquire robust component this component maintains a longrange order even in a limit of vanishing global anisotropy | [['a', 'mutual', 'action', 'of', 'the', 'random', 'anisotropy', 'brought', 'in', 'the', 'superfluid', '3he', 'by', 'aerogel', 'and', 'of', 'the', 'global', 'anisotropy', 'caused', 'by', 'its', 'deformation', 'is', 'considered', 'strong', 'global', 'anisotropy', 'tends', 'to', 'suppress', 'fluctuations', 'of', 'orientation', 'of', 'the', 'order', 'parameter', 'and', 'stabilizes', 'abm', 'order', 'parameter', 'in', 'a', 'limit', 'of', 'vanishing', 'anisotropy', 'these', 'fluctuations', 'are', 'getting', 'critical', 'it', 'is', 'argued', 'that', 'still', 'in', 'a', 'region', 'of', 'small', 'fluctuations', 'the', 'average', 'order', 'parameter', 'can', 'acquire', 'robust', 'component', 'this', 'component', 'maintains', 'a', 'longrange', 'order', 'even', 'in', 'a', 'limit', 'of', 'vanishing', 'global', 'anisotropy']] | [-0.23312513524901934, 0.24060346686613115, -0.08716121009797201, 0.051962385405037, -0.043350458177256176, -0.06223936749879142, 0.014789900180466217, 0.2837510423349409, -0.28533295712208956, -0.2880919035738227, 0.07412348214226465, -0.2943338257014409, -0.07425830901825223, 0.0783381801334092, 0.009589614332907823, 0.02069587025981418, -0.03533974547881162, 0.050842119166734576, -0.05059329781951597, -0.21870032435379408, 0.2958450965990109, 0.08041362470315619, 0.33222037726403053, 0.07391512202468284, 0.10159213154780111, -0.013563988872150752, 0.04202071108437817, 0.1011723829807992, -0.12718286521870967, 0.06586595390583443, 0.19559842583605613, -0.06741031346542911, 0.24300347964397107, -0.38336225095922233, -0.22603316652192468, 0.14059562856952348, 0.1798762876684938, 0.1466327304470128, 0.0016696329667479142, -0.2602396260775711, 0.07956061280471668, -0.18086977725869965, -0.20772112855666328, -0.14052904927139653, 0.0377467722008433, -0.0001931713101850159, -0.32659439751129044, 0.14409314134511456, 0.15156152235322642, 0.05628420545280665, -0.051191106027837885, -0.06323201491647325, -0.07066989883288056, 0.11165940917321834, 0.13316281715236689, 0.09619640152708724, 0.14270950155867929, -0.185513709642357, 0.0033789031507297494, 0.36838469915520183, -0.07647572228171189, -0.17909090908180023, 0.10961821309194483, -0.18503460539611935, -0.08177684175235958, 0.17016710179333372, 0.1512743248764811, 0.04994523775731695, -0.06792586468074513, 0.0907894801763261, 0.05782377971978537, 0.21680104606196113, 0.013405435210115266, 0.015588020927262032, 0.2232778928531655, 0.16739844359543132, 0.12590803182951507, 0.1452854934266244, -0.13811160938566064, -0.10676661489167433, -0.2770335967491927, -0.09534452818120005, -0.18875665378746118, 0.032173972683905185, -0.15422043962177992, -0.17080912366509438, 0.37688738539622263, 0.17102925986287065, 0.2307352774733699, -0.05648083711877979, 0.2683457841604263, 0.11162110429856627, 0.06618405176840465, 0.04623290202740965, 0.3280619370922361, 0.15769336559948907, 0.09663719281382945, -0.23855993497164, 0.13833842645452796, 0.0407467041507192] |
707.4223 | Spatial reflection and renormalization group flow of quantum many-body
systems with matrix product state representation | The property of quantum many-body systems under spatial reflection and the
relevant physics of renormalization group (RG) procedure are revealed. By
virtue of the matrix product state (MPS) representation, various attributes for
translational invariant systems associated with spatial reflection are
manifested. We demonstrate subsequently a conservation rule of the conjugative
relation for reflectional MPS pairs under RG transformations and illustrate
further the property of the fixed points of RG flows. Finally, we show that a
similar rule exists with respect to the target states in the density matrix
renormalization group algorithm.
| quant-ph cond-mat.stat-mech | the property of quantum manybody systems under spatial reflection and the relevant physics of renormalization group rg procedure are revealed by virtue of the matrix product state mps representation various attributes for translational invariant systems associated with spatial reflection are manifested we demonstrate subsequently a conservation rule of the conjugative relation for reflectional mps pairs under rg transformations and illustrate further the property of the fixed points of rg flows finally we show that a similar rule exists with respect to the target states in the density matrix renormalization group algorithm | [['the', 'property', 'of', 'quantum', 'manybody', 'systems', 'under', 'spatial', 'reflection', 'and', 'the', 'relevant', 'physics', 'of', 'renormalization', 'group', 'rg', 'procedure', 'are', 'revealed', 'by', 'virtue', 'of', 'the', 'matrix', 'product', 'state', 'mps', 'representation', 'various', 'attributes', 'for', 'translational', 'invariant', 'systems', 'associated', 'with', 'spatial', 'reflection', 'are', 'manifested', 'we', 'demonstrate', 'subsequently', 'a', 'conservation', 'rule', 'of', 'the', 'conjugative', 'relation', 'for', 'reflectional', 'mps', 'pairs', 'under', 'rg', 'transformations', 'and', 'illustrate', 'further', 'the', 'property', 'of', 'the', 'fixed', 'points', 'of', 'rg', 'flows', 'finally', 'we', 'show', 'that', 'a', 'similar', 'rule', 'exists', 'with', 'respect', 'to', 'the', 'target', 'states', 'in', 'the', 'density', 'matrix', 'renormalization', 'group', 'algorithm']] | [-0.17902750500406212, 0.1476263199206237, -0.15330035818720256, 0.03896811269837749, -0.02054262364150158, -0.1328393673769884, 0.06515490571497479, 0.39138491378053203, -0.3091359304591686, -0.25217790293550774, 0.08941936546522142, -0.2494936530161035, -0.16861088517132206, 0.1290717607998586, 0.0010836895611706435, 0.09805437933351681, 0.03909000705743393, 0.06974171855292477, -0.16537560603151527, -0.1710991066481386, 0.3830250776321678, -0.0026385665648606615, 0.3329522287534488, 0.027752007512570166, 0.12114711999279129, 0.030233196054513637, -0.06361978740948201, 0.025960376194504264, -0.05910156575419523, 0.0730452367666198, 0.22290396845930224, 0.07967810813532017, 0.2134074106055138, -0.38796054956677195, -0.19363386591302825, 0.053034030369247545, 0.1238877217267425, 0.1040539856038087, -0.05945967444842988, -0.33232890269053833, 0.07694857161758202, -0.21226144852219048, -0.17591285656953415, -0.1409985426977113, -0.005021818504146822, -0.023289375334650607, -0.25262654834723736, 0.10164700677761665, 0.02677809724655862, 0.07866102023111594, -0.034681206226226065, -0.06198399901072812, -0.0745618819824553, 0.10910169484482689, 0.06610233058313747, -0.05727197455017121, 0.13255932660016057, -0.13541939140778486, -0.11079426835659523, 0.40854563645680775, -0.013424823145704487, -0.20495258966604105, 0.1865717048071079, -0.11277613649656484, -0.1647796422719014, 0.10456394508051184, 0.10697678042637122, 0.08729908099797155, -0.12508988663922627, 0.11649612381230466, -0.10277038144016802, 0.13892084685573866, 0.01509623817976687, 0.05644399317104246, 0.1530164594424295, 0.06834248395043087, 0.1003327900185608, 0.11017783138143657, -0.02456242777215276, -0.11324150074826, -0.3141702257895044, -0.1791672440716526, -0.16972375817208007, 0.040560698899143675, -0.13668710508116438, -0.10726984174778828, 0.395800052517718, 0.11844343769845071, 0.19808996023589764, 0.0479326017794537, 0.17694751258586422, 0.14772102165619258, 0.06954324729024218, 0.0913821568937747, 0.15869871195364785, 0.18949588655576027, -0.013894767142259158, -0.2997637803482076, 0.0015024145077504626, 0.14378064409522648] |
707.4224 | The $\phi$ - Meson Physics in the Chirial Model | The $\phi \to K^+K^-,K^{0}_{L},K^{0}_{S},K^{0}\bar K^0$ decays are studied
using the method of phenomenological chiral Lagrangians. Calculated values for
partial widths for these decay channels are compared with available
experimental data.
| hep-ph | the phi to kkk0_lk0_sk0bar k0 decays are studied using the method of phenomenological chiral lagrangians calculated values for partial widths for these decay channels are compared with available experimental data | [['the', 'phi', 'to', 'kkk0_lk0_sk0bar', 'k0', 'decays', 'are', 'studied', 'using', 'the', 'method', 'of', 'phenomenological', 'chiral', 'lagrangians', 'calculated', 'values', 'for', 'partial', 'widths', 'for', 'these', 'decay', 'channels', 'are', 'compared', 'with', 'available', 'experimental', 'data']] | [-0.09582979146969216, 0.17287199674495335, -0.02281616184988926, 0.09457204561552097, -0.04163521798006419, -0.20417803098800882, -0.02751038272881174, 0.4071276501174374, -0.1980945267553987, -0.238962150082506, 0.024336009101685267, -0.389465959164603, 0.03393219832074026, 0.21310959990810732, 0.13936307718013896, 0.18530999216831145, 0.10723687642542966, 0.07184692420836153, -0.0936050223796789, -0.1942747046464476, 0.2686455950526328, -0.05602629575878382, 0.1991960621471035, 0.07828267894942186, -0.053640965368309666, -0.08482707815309024, -0.06035906098911475, -0.013545390218496323, -0.2507886306125799, 0.0625690133792573, 0.21787508919931434, 0.06808367658984558, 0.06299010712396481, -0.38263253418022186, -0.16307286584171757, 0.07296100175329323, 0.13753586734548726, 0.12051629294352285, -0.04850098445754627, -0.3901014433338724, 0.1715916970359354, -0.12211174423131964, -0.05717122660757139, -0.16155624290093265, 0.04190926802954797, -0.018768909483634192, -0.3715033678915994, 0.11376727966527486, -0.1435491625091125, 0.05779226844455918, -0.07615278421194646, -0.3187668911855796, -0.029525694581840574, 0.06753875289497704, 0.14594420530544272, 0.00047755336132029007, 0.12660631967772698, -0.10993431280527649, -0.12972178053239297, 0.38989935584109403, -0.0901120350664032, -0.2357515438042324, 0.0823797732591629, -0.1019550637695296, -0.13115941225711641, 0.2027286570519209, 0.1612929580893753, 0.11583211684021456, -0.16731817047272263, 0.08012361877501525, -0.0006373290229460288, 0.0941135646526477, 0.05986208385177728, 0.0980070445702636, 0.106229393710864, 0.1270671128455935, -0.12328289440985576, 0.07784381149144008, -0.06589385807706878, -0.13344461432304874, -0.395251604632057, -0.05183948139692175, -0.0898418103762228, -0.0043094145647924525, -0.01950417787884362, -0.07405494381513061, 0.3294432592289201, 0.07228041783874405, 0.26288162364528095, 0.11454744919620712, 0.30120591176994915, 0.14384173055918054, 0.08352276819340627, 0.02067772522247557, 0.29702105976898097, 0.22891815533411913, 0.0757430281233171, -0.23409670623468942, 0.01981986309241118, 0.006763037599237828] |
707.4225 | Electron-Electron Bremsstrahlung Emission and the Inference of Electron
Flux Spectra in Solar Flares | Although both electron-ion and electron-electron bremsstrahlung contribute to
the hard X-ray emission from solar flares, the latter is normally ignored. Such
an omission is not justified at electron (and photon) energies above $\sim 300$
keV, and inclusion of the additional electron-electron bremsstrahlung in
general makes the electron spectrum required to produce a given hard X-ray
spectrum steeper at high energies.
Unlike electron-ion bremsstrahlung, electron-electron bremsstrahlung cannot
produce photons of all energies up to the maximum electron energy involved. The
maximum possible photon energy depends on the angle between the direction of
the emitting electron and the emitted photon, and this suggests a diagnostic
for an upper cutoff energy and/or for the degree of beaming of the accelerated
electrons.
We analyze the large event of January 17, 2005 observed by RHESSI and show
that the upward break around 400 keV in the observed hard X-ray spectrum is
naturally accounted for by the inclusion of electron-electron bremsstrahlung.
Indeed, the mean source electron spectrum recovered through a regularized
inversion of the hard X-ray spectrum, using a cross-section that includes both
electron-ion and electron-electron terms, has a relatively constant spectral
index $\delta$ over the range from electron kinetic energy $E = 200$ keV to $E
= 1$ MeV. However, the level of detail discernible in the recovered electron
spectrum is not sufficient to determine whether or not any upper cutoff energy
exists.
| astro-ph | although both electronion and electronelectron bremsstrahlung contribute to the hard xray emission from solar flares the latter is normally ignored such an omission is not justified at electron and photon energies above sim 300 kev and inclusion of the additional electronelectron bremsstrahlung in general makes the electron spectrum required to produce a given hard xray spectrum steeper at high energies unlike electronion bremsstrahlung electronelectron bremsstrahlung cannot produce photons of all energies up to the maximum electron energy involved the maximum possible photon energy depends on the angle between the direction of the emitting electron and the emitted photon and this suggests a diagnostic for an upper cutoff energy andor for the degree of beaming of the accelerated electrons we analyze the large event of january 17 2005 observed by rhessi and show that the upward break around 400 kev in the observed hard xray spectrum is naturally accounted for by the inclusion of electronelectron bremsstrahlung indeed the mean source electron spectrum recovered through a regularized inversion of the hard xray spectrum using a crosssection that includes both electronion and electronelectron terms has a relatively constant spectral index delta over the range from electron kinetic energy e 200 kev to e 1 mev however the level of detail discernible in the recovered electron spectrum is not sufficient to determine whether or not any upper cutoff energy exists | [['although', 'both', 'electronion', 'and', 'electronelectron', 'bremsstrahlung', 'contribute', 'to', 'the', 'hard', 'xray', 'emission', 'from', 'solar', 'flares', 'the', 'latter', 'is', 'normally', 'ignored', 'such', 'an', 'omission', 'is', 'not', 'justified', 'at', 'electron', 'and', 'photon', 'energies', 'above', 'sim', '300', 'kev', 'and', 'inclusion', 'of', 'the', 'additional', 'electronelectron', 'bremsstrahlung', 'in', 'general', 'makes', 'the', 'electron', 'spectrum', 'required', 'to', 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'indeed', 'the', 'mean', 'source', 'electron', 'spectrum', 'recovered', 'through', 'a', 'regularized', 'inversion', 'of', 'the', 'hard', 'xray', 'spectrum', 'using', 'a', 'crosssection', 'that', 'includes', 'both', 'electronion', 'and', 'electronelectron', 'terms', 'has', 'a', 'relatively', 'constant', 'spectral', 'index', 'delta', 'over', 'the', 'range', 'from', 'electron', 'kinetic', 'energy', 'e', '200', 'kev', 'to', 'e', '1', 'mev', 'however', 'the', 'level', 'of', 'detail', 'discernible', 'in', 'the', 'recovered', 'electron', 'spectrum', 'is', 'not', 'sufficient', 'to', 'determine', 'whether', 'or', 'not', 'any', 'upper', 'cutoff', 'energy', 'exists']] | [-0.050161808868665, 0.21397685162973845, -0.03490455523605093, 0.18807548308211158, -0.03226458618998433, -0.11456259134705568, 0.03979649418751639, 0.42111679349024883, -0.21855439335961174, -0.3746453643928278, -0.023306964418649805, -0.3321280519289297, 0.040863955519592904, 0.22791390205909895, 0.044517468938005, 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707.4226 | A Unified Algebraic Approach to Classical Yang-Baxter Equation | In this paper, the different operator forms of classical Yang-Baxter equation
are given in the tensor expression through a unified algebraic method. It is
closely related to left-symmetric algebras which play an important role in many
fields in mathematics and mathematical physics. By studying the relations
between left-symmetric algebras and classical Yang-Baxter equation, we can
construct left-symmetric algebras from certain classical r-matrices and
conversely, there is a natural classical r-matrix constructed from a
left-symmetric algebra which corresponds to a parak\"ahler structure in
geometry. Moreover, the former in a special case gives an algebraic
interpretation of the ``left-symmetry'' as a Lie bracket ``left-twisted'' by a
classical r-matrix.
| math.QA math-ph math.MP | in this paper the different operator forms of classical yangbaxter equation are given in the tensor expression through a unified algebraic method it is closely related to leftsymmetric algebras which play an important role in many fields in mathematics and mathematical physics by studying the relations between leftsymmetric algebras and classical yangbaxter equation we can construct leftsymmetric algebras from certain classical rmatrices and conversely there is a natural classical rmatrix constructed from a leftsymmetric algebra which corresponds to a parakahler structure in geometry moreover the former in a special case gives an algebraic interpretation of the leftsymmetry as a lie bracket lefttwisted by a classical rmatrix | [['in', 'this', 'paper', 'the', 'different', 'operator', 'forms', 'of', 'classical', 'yangbaxter', 'equation', 'are', 'given', 'in', 'the', 'tensor', 'expression', 'through', 'a', 'unified', 'algebraic', 'method', 'it', 'is', 'closely', 'related', 'to', 'leftsymmetric', 'algebras', 'which', 'play', 'an', 'important', 'role', 'in', 'many', 'fields', 'in', 'mathematics', 'and', 'mathematical', 'physics', 'by', 'studying', 'the', 'relations', 'between', 'leftsymmetric', 'algebras', 'and', 'classical', 'yangbaxter', 'equation', 'we', 'can', 'construct', 'leftsymmetric', 'algebras', 'from', 'certain', 'classical', 'rmatrices', 'and', 'conversely', 'there', 'is', 'a', 'natural', 'classical', 'rmatrix', 'constructed', 'from', 'a', 'leftsymmetric', 'algebra', 'which', 'corresponds', 'to', 'a', 'parakahler', 'structure', 'in', 'geometry', 'moreover', 'the', 'former', 'in', 'a', 'special', 'case', 'gives', 'an', 'algebraic', 'interpretation', 'of', 'the', 'leftsymmetry', 'as', 'a', 'lie', 'bracket', 'lefttwisted', 'by', 'a', 'classical', 'rmatrix']] | [-0.14046310237719722, 0.0247474615265327, -0.12873465194508235, 0.13346390323824295, -0.17686058534752755, -0.15868596220389009, -0.07384756135510369, 0.2970017424740252, -0.3947273308499938, -0.22516454011201859, 0.07930672798372274, -0.2066421204534847, -0.2606145230432351, 0.22245486565821226, -0.12743845123442865, -0.031590209005489235, 0.06045641422803913, 0.13040096418754685, -0.1455523177493541, -0.18723641757942028, 0.4110191807261713, 0.046263728825198046, 0.24404372777789832, -0.038846460703228204, 0.13949300645894946, 0.004032453681741442, 0.012367816890279453, -0.04441633559763432, -0.17051438789459922, 0.12794732674512835, 0.3452390587933007, 0.07135514321603946, 0.18786830628246423, -0.3961304690156664, -0.11766167463113865, 0.11251336721082529, 0.1566417051789661, 0.10353302245383106, -0.04607756054250612, -0.2746092143402036, 0.013436504998909575, -0.20591680583588423, -0.1294112842707407, -0.04520590731075832, 0.05227197327518037, -0.04033301463794141, -0.20118870705510267, 0.09287437753130992, 0.09966127872134425, 0.11052642960234411, -0.10028309860665884, -0.09107186128385365, -0.03470680156633967, 0.057512256237013, -0.07651574620422685, 0.03421606182431181, 0.07821758387255527, -0.12131212460808456, -0.18667110202922707, 0.40179817598490486, 0.008167139085985365, -0.26893039057696505, 0.13152359457065663, -0.12781432772143966, -0.19807068543686043, 0.06011851710333888, 0.041813089263935885, 0.08201376622808831, -0.15123283288807476, 0.20768504064984708, -0.12996292211381452, 0.029702066459382573, 0.08689563823863863, 0.0033641325309872626, 0.1783143104009685, 0.06702178736172971, -0.0011418984809313856, 0.15003148642412964, 0.11371633427528044, -0.15802554541400501, -0.3593315637892201, -0.17443665996903465, -0.06172104907177743, 0.15827471722122505, -0.12397072836271643, -0.190769437327981, 0.3709009539335966, 0.11989995541350384, 0.174936834780965, 0.01597828477665427, 0.17931477782272157, 0.1373044630634554, 0.11034709032004078, 0.03157828629205358, 0.1592402407012525, 0.3103204933970812, 0.05695437784971935, -0.1302321497622567, -0.05536599394732288, 0.2138853124741997] |
707.4227 | Magnetization and Magnetoscrition of van Vleck antiferromagnets with
magnetic anisotropy of "easy-plane" type | The theoretical description of quantum phase transition, induced by the
external magnetic field, into antiferromagnetic state in the van Vleck -
singlet - magnet with a single-ion anisotropy of "easy-plane" type and ion spin
S=1 is proposed. It is shown that the spin polarization of the ground
non-degenerated state proves to be the order parameter of such a transition and
that the Landau thermodynamic approach can be employed for its (transition)
description. The magnetic properties which include the field behavior of the
magnetization and magnetic susceptibility of the antiferromagnetic phase in the
fields of different directions are studied. The peculiarities of induced
magnetostriction in van Vleck antiferromagnet, which as well as magnetization
has a singularity in the phase transition point, are investigated. An attempt
is made for qualitative comparison of results obtained with avaliable
experimental data.
| cond-mat.stat-mech | the theoretical description of quantum phase transition induced by the external magnetic field into antiferromagnetic state in the van vleck singlet magnet with a singleion anisotropy of easyplane type and ion spin s1 is proposed it is shown that the spin polarization of the ground nondegenerated state proves to be the order parameter of such a transition and that the landau thermodynamic approach can be employed for its transition description the magnetic properties which include the field behavior of the magnetization and magnetic susceptibility of the antiferromagnetic phase in the fields of different directions are studied the peculiarities of induced magnetostriction in van vleck antiferromagnet which as well as magnetization has a singularity in the phase transition point are investigated an attempt is made for qualitative comparison of results obtained with avaliable experimental data | [['the', 'theoretical', 'description', 'of', 'quantum', 'phase', 'transition', 'induced', 'by', 'the', 'external', 'magnetic', 'field', 'into', 'antiferromagnetic', 'state', 'in', 'the', 'van', 'vleck', 'singlet', 'magnet', 'with', 'a', 'singleion', 'anisotropy', 'of', 'easyplane', 'type', 'and', 'ion', 'spin', 's1', 'is', 'proposed', 'it', 'is', 'shown', 'that', 'the', 'spin', 'polarization', 'of', 'the', 'ground', 'nondegenerated', 'state', 'proves', 'to', 'be', 'the', 'order', 'parameter', 'of', 'such', 'a', 'transition', 'and', 'that', 'the', 'landau', 'thermodynamic', 'approach', 'can', 'be', 'employed', 'for', 'its', 'transition', 'description', 'the', 'magnetic', 'properties', 'which', 'include', 'the', 'field', 'behavior', 'of', 'the', 'magnetization', 'and', 'magnetic', 'susceptibility', 'of', 'the', 'antiferromagnetic', 'phase', 'in', 'the', 'fields', 'of', 'different', 'directions', 'are', 'studied', 'the', 'peculiarities', 'of', 'induced', 'magnetostriction', 'in', 'van', 'vleck', 'antiferromagnet', 'which', 'as', 'well', 'as', 'magnetization', 'has', 'a', 'singularity', 'in', 'the', 'phase', 'transition', 'point', 'are', 'investigated', 'an', 'attempt', 'is', 'made', 'for', 'qualitative', 'comparison', 'of', 'results', 'obtained', 'with', 'avaliable', 'experimental', 'data']] | [-0.18428702381658438, 0.20044262450869949, -0.05620575713257847, 0.024264223994374442, -0.0579843663857249, -0.1006530961021781, 0.013213566811963805, 0.371810648576426, -0.23690316130740763, -0.2814999582704657, 0.042349523576254496, -0.30387339891115234, -0.10398732182750506, 0.17732710793002773, 0.09518227683825058, 0.019818321318250957, -0.03099420149602107, 0.058634803128261956, -0.07977272818601731, -0.19101358113337807, 0.29654886194768904, 0.012369511029578801, 0.28434710666961244, 0.09027412716201993, 0.058162974111158956, -0.0016364949949106563, 0.14833094116731255, 0.07227822696901302, -0.1542947794587235, 0.01766601592691532, 0.251009812745363, -0.04447041782759019, 0.14888197403234332, -0.41211225585873, -0.20670546369571516, 0.03427201326686277, 0.10248984210193157, 0.16484509129945968, -0.049281246261671185, -0.33114290946343944, 0.0157127491790982, -0.15224324474667214, -0.15436885938649553, -0.15940523267820922, -0.047098939166293104, 0.010079173543212463, -0.2737489593382091, 0.10497137451580893, 0.12949452564683256, 0.11460745222032515, -0.09376963633964006, -0.12023619932483938, -0.06727306661022299, 0.08713855523157364, 0.0938678547347298, 0.1195425305753571, 0.10676509109256205, -0.1303788173036761, -0.14023178465553185, 0.3568377757458878, -0.0523688508581662, -0.08973198739200164, 0.11413523398162519, -0.18140937976970045, -0.08157023909126422, 0.1569366871636472, 0.06979750838554673, 0.06105006894499842, -0.12469403901999232, 0.10951429477470594, 0.041797579311307016, 0.13298736314659912, 0.011980683480236513, 0.03791322890641307, 0.23347686665521852, 0.1563865468601015, 0.002577349390667766, 0.17979412338324585, -0.11891378242689282, -0.1362122995639915, -0.24873146319191958, -0.1752608169092616, -0.2447346416858039, 0.07506921837356553, -0.087433047380334, -0.2018493773776659, 0.4071937526277364, 0.1584135996361972, 0.18521297679616333, -0.0976080393137188, 0.2546093307067154, 0.10656702515509313, 0.024560494317131032, 0.004363124984240076, 0.28948050975076745, 0.2178120701903922, 0.1356312722461159, -0.29339217966936754, 0.07263948561262283, 0.04779062744702643] |
707.4228 | Comparison of RABITT and FROG measurements in the temporal
characterization of attosecond pulse trains | The attosecond high harmonic pulses obtained from a long Ar-filled gas cell
were characterized by two techniques - the reconstruction of attosecond beating
by interference of two-photon transition (RABITT) and frequency-resolved
optical gating (FROG) methods. The pulse durations obtained by RABITT and FROG
methods agreed within 10 %.
| physics.optics physics.atom-ph | the attosecond high harmonic pulses obtained from a long arfilled gas cell were characterized by two techniques the reconstruction of attosecond beating by interference of twophoton transition rabitt and frequencyresolved optical gating frog methods the pulse durations obtained by rabitt and frog methods agreed within 10 | [['the', 'attosecond', 'high', 'harmonic', 'pulses', 'obtained', 'from', 'a', 'long', 'arfilled', 'gas', 'cell', 'were', 'characterized', 'by', 'two', 'techniques', 'the', 'reconstruction', 'of', 'attosecond', 'beating', 'by', 'interference', 'of', 'twophoton', 'transition', 'rabitt', 'and', 'frequencyresolved', 'optical', 'gating', 'frog', 'methods', 'the', 'pulse', 'durations', 'obtained', 'by', 'rabitt', 'and', 'frog', 'methods', 'agreed', 'within', '10']] | [-0.04954821467528948, 0.23345514751142926, -0.052117564239435726, 0.08519198473335968, 0.09484227119634549, -0.22201587598149974, 0.08430533659023544, 0.5530924207634396, -0.23899774191280207, -0.301512555198537, 0.033150177645600507, -0.23932863971114987, -0.13193178218271998, 0.27358240162332853, -0.046559717604476546, 0.14861388569697737, 0.07088916658734282, -0.08760903432137436, 0.013916605669591162, -0.11771974323524369, 0.19648894282678764, 0.04524973642287983, 0.26711641670101216, -0.0010009740686251058, 0.1756665445243319, 0.05511387101271086, -0.0263308051145739, -0.1024022650387552, -0.10582582093775272, 0.07337249933948947, 0.2047949071559641, 0.048155713184840146, 0.23576066678182947, -0.4839445953567823, -0.2915801976703935, -0.039583790514411195, 0.15971191465440723, 0.1486974003000392, -0.044070550144857, -0.35941702651066915, -0.05170041202670998, -0.11067344050647485, -0.04410210649172465, -0.035743901713026896, -0.04829955682572391, 0.1871848398923046, -0.2460038061771128, 0.09254306966387149, -0.024610745741261375, 0.09949819590482446, -0.01921048139532407, -0.01617994045631753, 0.044216160082982646, 0.1064039616431627, -0.06453741603117022, 0.0642751127998862, 0.1823287988702456, -0.12811557790264488, -0.21944823761781057, 0.33296637220515146, -0.11910694924493631, 0.02691368344757292, 0.09739105194393131, -0.23024251240616042, 0.009000816072026888, 0.296932525622348, 0.013266948532933991, 0.12751561966207292, -0.13833011014180052, -0.09448768463658376, 0.06303384498589569, 0.2276625870830483, 0.25432091053678757, 0.05395249612629414, 0.15666477866470813, 0.17248564321133825, -0.01494147005594439, 0.07432425327133388, -0.17859393134713172, -0.009199141090114911, -0.1634164784517553, 0.03903795145452023, -0.2387037312404977, 0.04347933859874805, -0.01978096640086733, -0.08403648510575294, 0.46829310597644913, 0.07447525227649344, 0.12396235808523165, 0.009158681457241377, 0.3767848376702103, 0.14898177774416077, 0.03815237246453762, -0.0671290828122033, 0.26539123016150873, 0.16537934040857685, 0.15176199483167793, -0.28394122346459577, 0.013833229551609191, 0.05508622022138702] |
707.4229 | Giant Magneto-impedance in stress-annealed Finemet/Copper/Finemet based
trilayer structures | The resistive and reactive components of magneto-impedance (MI) for
Finemet/Copper/Finemet sandwiched structures based on stress-annealed
nanocrystalline Fe75Si15B6Cu1Nb3 ribbons as functions of different fields
(longitudinal and perpendicular) and frequencies have been measured and
analyzed. Maximum magneto-resistance and magneto-inductance ratios of 700% and
450% have been obtained in 30-600 kHz frequency range respectively. These large
magneto-resistance and magneto-inductive ratios are a direct consequence of the
large effective relative permeability due to the closed magnetic flux path in
the trilayer structure. The influence of perpendicular bias fields (Hper) in
the Longitudinal Magneto-impedance (LMI) configuration greatly improves the MI
ratios and sensitivities. The maximum MI ratio for the resistive part increases
to as large as 2500% for Hper ~ 1 Oe. The sensitivity of the magneto-resistance
increases from 48%/Oe to 288%/Oe at 600 kHz frequency with the application of
Hper ~ 30 Oe. Such high increase in MI ratios and sensitivities with
perpendicular bias fields are due to the formation the favourable (transverse)
domain structures.
| cond-mat.mtrl-sci | the resistive and reactive components of magnetoimpedance mi for finemetcopperfinemet sandwiched structures based on stressannealed nanocrystalline fe75si15b6cu1nb3 ribbons as functions of different fields longitudinal and perpendicular and frequencies have been measured and analyzed maximum magnetoresistance and magnetoinductance ratios of 700 and 450 have been obtained in 30600 khz frequency range respectively these large magnetoresistance and magnetoinductive ratios are a direct consequence of the large effective relative permeability due to the closed magnetic flux path in the trilayer structure the influence of perpendicular bias fields hper in the longitudinal magnetoimpedance lmi configuration greatly improves the mi ratios and sensitivities the maximum mi ratio for the resistive part increases to as large as 2500 for hper 1 oe the sensitivity of the magnetoresistance increases from 48oe to 288oe at 600 khz frequency with the application of hper 30 oe such high increase in mi ratios and sensitivities with perpendicular bias fields are due to the formation the favourable transverse domain structures | [['the', 'resistive', 'and', 'reactive', 'components', 'of', 'magnetoimpedance', 'mi', 'for', 'finemetcopperfinemet', 'sandwiched', 'structures', 'based', 'on', 'stressannealed', 'nanocrystalline', 'fe75si15b6cu1nb3', 'ribbons', 'as', 'functions', 'of', 'different', 'fields', 'longitudinal', 'and', 'perpendicular', 'and', 'frequencies', 'have', 'been', 'measured', 'and', 'analyzed', 'maximum', 'magnetoresistance', 'and', 'magnetoinductance', 'ratios', 'of', '700', 'and', '450', 'have', 'been', 'obtained', 'in', '30600', 'khz', 'frequency', 'range', 'respectively', 'these', 'large', 'magnetoresistance', 'and', 'magnetoinductive', 'ratios', 'are', 'a', 'direct', 'consequence', 'of', 'the', 'large', 'effective', 'relative', 'permeability', 'due', 'to', 'the', 'closed', 'magnetic', 'flux', 'path', 'in', 'the', 'trilayer', 'structure', 'the', 'influence', 'of', 'perpendicular', 'bias', 'fields', 'hper', 'in', 'the', 'longitudinal', 'magnetoimpedance', 'lmi', 'configuration', 'greatly', 'improves', 'the', 'mi', 'ratios', 'and', 'sensitivities', 'the', 'maximum', 'mi', 'ratio', 'for', 'the', 'resistive', 'part', 'increases', 'to', 'as', 'large', 'as', '2500', 'for', 'hper', '1', 'oe', 'the', 'sensitivity', 'of', 'the', 'magnetoresistance', 'increases', 'from', '48oe', 'to', '288oe', 'at', '600', 'khz', 'frequency', 'with', 'the', 'application', 'of', 'hper', '30', 'oe', 'such', 'high', 'increase', 'in', 'mi', 'ratios', 'and', 'sensitivities', 'with', 'perpendicular', 'bias', 'fields', 'are', 'due', 'to', 'the', 'formation', 'the', 'favourable', 'transverse', 'domain', 'structures']] | [-0.1536146413407051, 0.1774315137805697, 0.046967051682835506, 0.011159991388957874, -0.06928105242215583, -0.07155571336511012, 0.03039646309532615, 0.39743969477773977, -0.2312917447697639, -0.3639456226058256, 0.08011964314124163, -0.24822264654695794, -0.05859148530959109, 0.23735174177567553, 0.032815648574576854, 0.027991871659954388, -0.011600731491579924, -0.028712608029737192, -0.05443269281276788, -0.18120957785240357, 0.23111018325199123, 0.049273012096391004, 0.3721623365718604, 0.08366480589010357, 0.07403183317426713, -0.030914124234935596, 0.05364463754680032, 0.06752761379736506, -0.14343396268078898, 0.009390898675846509, 0.23655004761626128, -0.032375804325139604, 0.2050604451633381, -0.3702807533980828, -0.12284659275943352, 0.020711483062531046, 0.13573343132232968, 0.062265075031010544, 0.008350903376042112, -0.23138814102066985, 0.1403613868443405, -0.13979182494012943, -0.08938859282000587, -0.01846507018176364, 0.041219376100628986, 0.0556769208994761, -0.29595962240211543, 0.12893883908206286, 0.019193445631613716, 0.1488800447348968, -0.07864742498735294, -0.23003210425011666, -0.04029987662044518, 0.058706381455599484, 0.07011632704681237, 0.0588889463463786, 0.17090825036508975, -0.12151846578466444, -0.09481791872531176, 0.29216090667067596, -0.09689429651312774, -0.09642201829458179, 0.202511246381571, -0.20919336995803842, -0.014928696499422217, 0.18641276715104194, 0.19790232645384237, 0.09920883048447518, -0.09035698425677587, 0.03456822839326657, 0.08146967527949635, 0.15183876171172445, 0.13297029514036146, 0.06701476413306165, 0.22662198054133434, 0.14366394653231562, 0.03803409613484214, 0.15748720844900174, -0.19854402236390883, -0.009327285627840586, -0.19287267861221277, -0.1460983437650344, -0.12250487346832148, 0.05689202128963551, -0.14452652737402794, -0.15687437351561742, 0.3937805772886849, 0.13819189092649978, 0.22780042672468945, -0.011252010798118278, 0.2918466457342303, 0.13850809940900896, 0.13212101455485703, 0.03314730080660262, 0.3126277139051239, 0.2502808270068973, 0.17113897853585727, -0.24673910727389645, 0.06658148723563143, -0.07625594085045889] |
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