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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707.263 | Multi-physics Extension of OpenFMO Framework | OpenFMO framework, an open-source software (OSS) platform for Fragment
Molecular Orbital (FMO) method, is extended to multi-physics simulations (MPS).
After reviewing the several FMO implementations on distributed computer
environments, the subsequent development planning corresponding to MPS is
presented. It is discussed which should be selected as a scientific software,
lightweight and reconfigurable form or large and self-contained form.
| cs.DC physics.comp-ph | openfmo framework an opensource software oss platform for fragment molecular orbital fmo method is extended to multiphysics simulations mps after reviewing the several fmo implementations on distributed computer environments the subsequent development planning corresponding to mps is presented it is discussed which should be selected as a scientific software lightweight and reconfigurable form or large and selfcontained form | [['openfmo', 'framework', 'an', 'opensource', 'software', 'oss', 'platform', 'for', 'fragment', 'molecular', 'orbital', 'fmo', 'method', 'is', 'extended', 'to', 'multiphysics', 'simulations', 'mps', 'after', 'reviewing', 'the', 'several', 'fmo', 'implementations', 'on', 'distributed', 'computer', 'environments', 'the', 'subsequent', 'development', 'planning', 'corresponding', 'to', 'mps', 'is', 'presented', 'it', 'is', 'discussed', 'which', 'should', 'be', 'selected', 'as', 'a', 'scientific', 'software', 'lightweight', 'and', 'reconfigurable', 'form', 'or', 'large', 'and', 'selfcontained', 'form']] | [-0.1324547791624801, 0.04101106363553921, -0.09256334058744342, 0.04526893568854256, -0.09325398619515463, -0.15963219917428337, -0.06955664608987015, 0.46046466824778337, -0.2390335162595045, -0.3165366655182943, 0.12227155601507739, -0.16648026728969917, -0.13693096000586816, 0.2649843401087677, 0.014424506770937066, 0.07259249824442361, 0.15632885673263094, -0.08345772593952062, -0.031050041934226134, -0.22140324135359965, 0.19135060014505462, 0.11017490725702885, 0.2562823220515591, 0.045723806033237724, 0.05276040474704483, 0.00358358728944471, -0.03779831888325708, -0.05564148554970559, -0.0899895635482512, 0.1468206553540209, 0.3565995964924233, 0.2408998707848552, 0.3417675096803067, -0.4363923474835853, -0.1499056656632507, -0.0286670299737077, 0.15514650930274734, 0.11671158247994945, -0.03625976400431491, -0.3100686862803342, 0.07224256429298405, -0.2958809578497159, -0.16768895278341675, -0.1425663870064901, 0.034303519278437944, -0.0017468650414804486, -0.18803726862339923, -0.055392713857847345, -0.030647113933554737, 0.07195777615957093, -0.02663254466626728, -0.15679970775779925, 0.0026013494158784547, 0.08737641549873444, -0.04419933875058696, 0.0506695853607533, 0.24442236096875972, -0.057440479459616826, -0.11880940042860937, 0.4260655359217995, 0.049092886177005995, -0.17932236813858413, 0.2116246210378513, 0.048626501423617206, -0.19602770707978492, 0.11760010834979384, 0.200752836799151, 0.10881423455123838, -0.25960065022503076, 0.06165675225610469, 0.02247396644139499, 0.21497409344699822, -0.012180089444052754, 0.004043112999122394, 0.21047983602865747, 0.25892204993910956, 0.01052986088682685, 0.1548129592883286, 0.021753097071492096, -0.18805280879237934, -0.23927203820724235, -0.19449174366360367, -0.19013207912314356, 0.010289588612259218, -0.01711118454062543, -0.18238749918772987, 0.34261138439015076, 0.1265653076483623, 0.026698845365133724, 0.02573511703961055, 0.35634877951815724, 0.018996742666339536, 0.12425824055415496, 0.13027879940100798, 0.10532337185322192, 0.07954073622169201, 0.15094257467181274, -0.20631914675693241, 0.04662404490406053, 0.004445890467123766] |
707.2631 | The study of $B\to J/\Psi \eta^{(\prime)}$ decays and determination of
$\eta-\eta^{\prime}$ mixing angle | We study $B\to J/\Psi \eta^{(\prime)}$ decays and suggest two methods to
determine the $\eta-\eta^{\prime}$ mixing angle. We calculate not only the
factorizable contribution in QCD facorization scheme but also the
nonfactorizable hard spectator corrections in pQCD approach. We get the
branching ratio of $B\to J/\Psi \eta$ which is consistent with recent
experimental data and predict the branching ratio of $B\to J/\Psi
\eta^{\prime}$ to be $7.59\times 10^{-6}$. Two methods for determining
$\eta-\eta^{\prime}$ mixing angle are suggested in this paper. For the first
method, we get the $\eta-\eta^{\prime}$ mixing angle to be about
$-13.1^{\circ}$, which is in consistency with others in the literature. The
second method depends on less parameters so can be used to determine the
$\eta-\eta^{\prime}$ mixing angle with better accuracy but needs, as an input,
the branching ratio for $B\to J/\Psi \eta^{\prime}$which should be measured in
the near future.
| hep-ph | we study bto jpsi etaprime decays and suggest two methods to determine the etaetaprime mixing angle we calculate not only the factorizable contribution in qcd facorization scheme but also the nonfactorizable hard spectator corrections in pqcd approach we get the branching ratio of bto jpsi eta which is consistent with recent experimental data and predict the branching ratio of bto jpsi etaprime to be 759times 106 two methods for determining etaetaprime mixing angle are suggested in this paper for the first method we get the etaetaprime mixing angle to be about 131circ which is in consistency with others in the literature the second method depends on less parameters so can be used to determine the etaetaprime mixing angle with better accuracy but needs as an input the branching ratio for bto jpsi etaprimewhich should be measured in the near future | [['we', 'study', 'bto', 'jpsi', 'etaprime', 'decays', 'and', 'suggest', 'two', 'methods', 'to', 'determine', 'the', 'etaetaprime', 'mixing', 'angle', 'we', 'calculate', 'not', 'only', 'the', 'factorizable', 'contribution', 'in', 'qcd', 'facorization', 'scheme', 'but', 'also', 'the', 'nonfactorizable', 'hard', 'spectator', 'corrections', 'in', 'pqcd', 'approach', 'we', 'get', 'the', 'branching', 'ratio', 'of', 'bto', 'jpsi', 'eta', 'which', 'is', 'consistent', 'with', 'recent', 'experimental', 'data', 'and', 'predict', 'the', 'branching', 'ratio', 'of', 'bto', 'jpsi', 'etaprime', 'to', 'be', '759times', '106', 'two', 'methods', 'for', 'determining', 'etaetaprime', 'mixing', 'angle', 'are', 'suggested', 'in', 'this', 'paper', 'for', 'the', 'first', 'method', 'we', 'get', 'the', 'etaetaprime', 'mixing', 'angle', 'to', 'be', 'about', '131circ', 'which', 'is', 'in', 'consistency', 'with', 'others', 'in', 'the', 'literature', 'the', 'second', 'method', 'depends', 'on', 'less', 'parameters', 'so', 'can', 'be', 'used', 'to', 'determine', 'the', 'etaetaprime', 'mixing', 'angle', 'with', 'better', 'accuracy', 'but', 'needs', 'as', 'an', 'input', 'the', 'branching', 'ratio', 'for', 'bto', 'jpsi', 'etaprimewhich', 'should', 'be', 'measured', 'in', 'the', 'near', 'future']] | [-0.03732555423587602, 0.21878111633390396, -0.10110375259126372, 0.11243340349841781, -0.09640518948435783, -0.11616186669733211, 0.08392563431955162, 0.3536870531285839, -0.22749710557571448, -0.22209062687847214, -0.018596800234209857, -0.29927889876725045, -0.053880616916370964, 0.15689342435764367, 0.015547759057132198, 0.11564479149905417, 0.08017150934390027, -0.0030945379780057598, -0.0742276436443824, -0.18958605353391783, 0.24825706777354592, 0.0115878032246495, 0.2169643135720809, 0.15128769075004933, -0.05875629446082337, -0.035585933289600205, -0.055672483522143656, -0.03626719384235056, -0.16887959518777174, 0.020610565383000958, 0.24565724487526014, 0.11332874096971114, 0.0953221358530059, -0.32739026350078776, -0.05184268548071165, 0.15108986568178379, 0.1857391059747897, 0.09924954427996828, 0.04156576577995164, -0.3045554650341407, 0.12046943537750528, -0.18915405849282466, -0.056174693300443536, -0.13760445264222868, 0.018820238939952105, -0.09289892538543106, -0.39001444089294907, 0.06275846973307232, -0.07789816267733626, -0.0038600117379032515, 0.017036582492223448, -0.24627507686690317, 0.016244084286667845, 0.07863720277023009, 0.1603917668621494, 0.10472153274253394, 0.15532875319203251, -0.11895904911045149, -0.14414930258713224, 0.43740286009714885, -0.04737430880092742, -0.2425272327108199, 0.07416523123153157, -0.22172610712518423, -0.1797206381246831, 0.14730574357321635, 0.227560582337901, 0.10453439212185056, -0.16016898896572562, 0.03888007720353712, -0.03377745606806403, 0.19393300160984783, 0.08808737539563, 0.07434372419683154, 0.13304866566185786, 0.19450929715650786, -0.012668575981960577, 0.04987363471017863, -0.09311217592638808, -0.07665989343898699, -0.3406162705197109, -0.14263028597377023, -0.06736584369055516, 0.0798133967380315, -0.10333875083918376, -0.06968532732057878, 0.3265115020460197, 0.12420337818741031, 0.30871019750723944, 0.03377712922990801, 0.361080928486498, 0.1357961594086887, 0.03227099155414822, 0.07562021193478037, 0.39072282913634004, 0.18650756206582575, 0.11243415873169023, -0.2988279465723334, 0.15232144179438312, 0.04518298206761863] |
707.2632 | Coupled quantum electrodynamics in photonic crystal nanocavities | We show that a scalable photonic crystal nanocavity array, in which single
embedded quantum dots are coherently interacting, can perform as an universal
single-operation quantum gate. In a passive system, the optical analogue of
electromagnetically-induced-transparency is observed. The presence of a single
two-level system in the array dramatically controls the spectral lineshapes.
When each cavity couples with a two-level system, our scheme achieves two-qubit
gate operations with high fidelity and low photon loss, even in the bad cavity
limit and with non-ideal detuning and decoherence.
| quant-ph | we show that a scalable photonic crystal nanocavity array in which single embedded quantum dots are coherently interacting can perform as an universal singleoperation quantum gate in a passive system the optical analogue of electromagneticallyinducedtransparency is observed the presence of a single twolevel system in the array dramatically controls the spectral lineshapes when each cavity couples with a twolevel system our scheme achieves twoqubit gate operations with high fidelity and low photon loss even in the bad cavity limit and with nonideal detuning and decoherence | [['we', 'show', 'that', 'a', 'scalable', 'photonic', 'crystal', 'nanocavity', 'array', 'in', 'which', 'single', 'embedded', 'quantum', 'dots', 'are', 'coherently', 'interacting', 'can', 'perform', 'as', 'an', 'universal', 'singleoperation', 'quantum', 'gate', 'in', 'a', 'passive', 'system', 'the', 'optical', 'analogue', 'of', 'electromagneticallyinducedtransparency', 'is', 'observed', 'the', 'presence', 'of', 'a', 'single', 'twolevel', 'system', 'in', 'the', 'array', 'dramatically', 'controls', 'the', 'spectral', 'lineshapes', 'when', 'each', 'cavity', 'couples', 'with', 'a', 'twolevel', 'system', 'our', 'scheme', 'achieves', 'twoqubit', 'gate', 'operations', 'with', 'high', 'fidelity', 'and', 'low', 'photon', 'loss', 'even', 'in', 'the', 'bad', 'cavity', 'limit', 'and', 'with', 'nonideal', 'detuning', 'and', 'decoherence']] | [-0.19399917887945084, 0.1968849890249008, -0.019025931556132577, -0.0547493875977428, 0.06965696333541668, -0.30037408801061766, 0.0571630918947492, 0.4500718831661202, -0.22387342192676096, -0.30532902897158193, 0.011719713031890847, -0.2613461112999912, -0.11461161903502043, 0.24996035052269386, -0.05340623042901002, 0.09142019586094345, 0.08879685649160474, -0.008565638785339183, -0.035310496553956044, -0.1983081617813912, 0.2374371365156202, 0.045377029463582276, 0.3256404650996306, -0.015226229093968868, 0.13068243412722258, 0.01089641472069724, 0.15193489209438363, -0.03898867609677836, -0.005017793042064849, 0.06496465883018183, 0.24584194320431424, -0.005878472733976585, 0.25828264731570105, -0.43201907770708203, -0.1761356245565583, 0.05119659341012482, 0.16326184993765006, 0.19288371715533903, -0.06344769554146167, -0.3106289170349815, 0.002898722632034194, -0.18532921835070565, -0.09126293112681846, -0.07025275937658512, -0.07602302024939231, 0.008496237089968332, -0.2890267541543359, 0.02705270122914087, 0.04147944033944181, 0.01945354467413078, 0.02327045323216312, 0.04351783552833478, 0.029742505836544468, 0.07785061895784955, -0.1628951138866666, 0.018388030291091473, 0.2404443076257372, -0.12477788206056825, -0.1466519530042119, 0.3522671576411951, -0.12264125973507319, -0.1685101235773237, 0.1537995269477722, -0.16673376579724608, -0.020646773203874806, 0.13607668126046302, 0.1389740393656428, 0.05127622360651869, -0.08569521748636146, 0.0750724377143169, -0.025124939579871438, 0.3022694214180644, 0.04682705677225299, 0.19382148225503487, 0.22064244380176423, 0.18982891958772338, 0.04891639572659707, 0.2503600217002843, -0.10019280627879891, -0.09462354389861935, -0.27133930446801796, -0.1694682708448021, -0.22254871182321084, 0.10652646745577277, -0.10205188201178403, -0.17641703292195285, 0.3737338465692422, 0.07628586532830793, 0.14727394559997178, -0.03386466403996261, 0.3376487848748054, 0.1666871416548799, 0.07746203323560101, 0.05404788627111841, 0.24866728400368066, 0.15708497810798386, 0.04259978883436859, -0.3440382866066925, -0.04097465879749507, -0.06705235927421156] |
707.2633 | Winterberg's conjectured breaking of the superluminal quantum
correlations over large distances | We elaborate further on a hypothesis by Winterberg that turbulent
fluctuations of the zero point field may lead to a breakdown of the
superluminal quantum correlations over very large distances. A phenomenological
model that was proposed by Winterberg to estimate the transition scale of the
conjectured breakdown, does not lead to a distance that is large enough to be
agreeable with recent experiments. We consider, but rule out, the possibility
of a steeper slope in the energy spectrum of the turbulent fluctuations, due to
compressibility, as a possible mechanism that may lead to an increased
lower-bound for the transition scale. Instead, we argue that Winterberg
overestimated the intensity of the ZPF turbulent fluctuations. We calculate a
very generous corrected lower bound for the transition distance which is
consistent with current experiments.
| quant-ph | we elaborate further on a hypothesis by winterberg that turbulent fluctuations of the zero point field may lead to a breakdown of the superluminal quantum correlations over very large distances a phenomenological model that was proposed by winterberg to estimate the transition scale of the conjectured breakdown does not lead to a distance that is large enough to be agreeable with recent experiments we consider but rule out the possibility of a steeper slope in the energy spectrum of the turbulent fluctuations due to compressibility as a possible mechanism that may lead to an increased lowerbound for the transition scale instead we argue that winterberg overestimated the intensity of the zpf turbulent fluctuations we calculate a very generous corrected lower bound for the transition distance which is consistent with current experiments | [['we', 'elaborate', 'further', 'on', 'a', 'hypothesis', 'by', 'winterberg', 'that', 'turbulent', 'fluctuations', 'of', 'the', 'zero', 'point', 'field', 'may', 'lead', 'to', 'a', 'breakdown', 'of', 'the', 'superluminal', 'quantum', 'correlations', 'over', 'very', 'large', 'distances', 'a', 'phenomenological', 'model', 'that', 'was', 'proposed', 'by', 'winterberg', 'to', 'estimate', 'the', 'transition', 'scale', 'of', 'the', 'conjectured', 'breakdown', 'does', 'not', 'lead', 'to', 'a', 'distance', 'that', 'is', 'large', 'enough', 'to', 'be', 'agreeable', 'with', 'recent', 'experiments', 'we', 'consider', 'but', 'rule', 'out', 'the', 'possibility', 'of', 'a', 'steeper', 'slope', 'in', 'the', 'energy', 'spectrum', 'of', 'the', 'turbulent', 'fluctuations', 'due', 'to', 'compressibility', 'as', 'a', 'possible', 'mechanism', 'that', 'may', 'lead', 'to', 'an', 'increased', 'lowerbound', 'for', 'the', 'transition', 'scale', 'instead', 'we', 'argue', 'that', 'winterberg', 'overestimated', 'the', 'intensity', 'of', 'the', 'zpf', 'turbulent', 'fluctuations', 'we', 'calculate', 'a', 'very', 'generous', 'corrected', 'lower', 'bound', 'for', 'the', 'transition', 'distance', 'which', 'is', 'consistent', 'with', 'current', 'experiments']] | [-0.1345489743993909, 0.19064375568807343, -0.1446139477584369, 0.10907360509869764, -0.055414945640750515, -0.1201113875073786, 0.0849148624260374, 0.3170625642510771, -0.23577998635423092, -0.29568234927781667, 0.0505622724588349, -0.2518857536936989, -0.11217040540730466, 0.17969205938386268, -0.037906481173486654, 0.01544318702925025, 0.027358656891315947, 0.014493457071895477, -0.07062144388350523, -0.1842608039484196, 0.30086979091803734, 0.15365427904424633, 0.3037473552376885, 0.11637716542374883, 0.056504849212969305, -0.08555703100975859, 0.014451395688251456, 0.0706846943580126, -0.14146425893121686, 0.06676944758998983, 0.19016854148642479, 0.055896281428237, 0.2555570098223122, -0.4126890799357691, -0.24010856311682982, 0.13206902495585382, 0.15189530288814815, 0.1321937212718736, -0.044192443528027765, -0.2425204965549002, 0.09361520737502013, -0.17493684006897547, -0.15150809668640797, -0.06865306189354822, 0.044393920342309955, -0.018637342710858425, -0.28746717788264836, 0.1267512894052486, 0.06267618192075432, 0.015631131522129964, -0.024593092630908805, -0.07532539176541374, 0.005295403978879784, 0.0817035262149453, 0.0869571688311274, 0.05801793215227605, 0.1334333764211424, -0.14635791709710566, -0.07926733453779389, 0.36490493340289776, -0.10386696060362294, -0.1301053968535466, 0.17616338344141558, -0.1641651263121935, -0.09876634847401207, 0.1727398598836806, 0.15618237781601438, 0.07592279787836526, -0.09237653204019515, 0.011910933233399427, -0.04131511303699284, 0.18874151463809652, 0.02813247238936899, 0.01171210101798518, 0.22560569744926828, 0.11430973070495912, 0.07607818694913206, 0.10282857620018669, -0.13332297586665298, -0.104672702900685, -0.3083614089263191, -0.09859484052934278, -0.19813554120456217, 0.0998447895484829, -0.0755622023076729, -0.15652755311626287, 0.3265631127292077, 0.21553421861008662, 0.25676050620288626, 0.07211140888469393, 0.23762333179461478, 0.14373446502527293, 0.11534887392301368, 0.0781241774004493, 0.3061309022516126, 0.11548067758371698, 0.0774990365314404, -0.22694201446813708, 0.08349099168145162, 0.008958941958275915] |
707.2634 | Fluctuations and Criticality in Quantum Paraelectrics | The temperature dependence of static dielectric susceptibility of a system
with strongly coupled fluctuating dipoles is calculated within a self
consistent mean fluctuation field approximation. Results are qualitatively in
good agreement with, a quantum paraelectric, SrTiO$_3$ in the low temperature
regime. We identify this system as a {\it gaped quantum paraelectric} and
suggest a possible experimental realization of a {\it quantum critical
paraelectric} through the application of hydrostatic pressure or doping by
impurity.
| cond-mat.mtrl-sci cond-mat.stat-mech | the temperature dependence of static dielectric susceptibility of a system with strongly coupled fluctuating dipoles is calculated within a self consistent mean fluctuation field approximation results are qualitatively in good agreement with a quantum paraelectric srtio_3 in the low temperature regime we identify this system as a it gaped quantum paraelectric and suggest a possible experimental realization of a it quantum critical paraelectric through the application of hydrostatic pressure or doping by impurity | [['the', 'temperature', 'dependence', 'of', 'static', 'dielectric', 'susceptibility', 'of', 'a', 'system', 'with', 'strongly', 'coupled', 'fluctuating', 'dipoles', 'is', 'calculated', 'within', 'a', 'self', 'consistent', 'mean', 'fluctuation', 'field', 'approximation', 'results', 'are', 'qualitatively', 'in', 'good', 'agreement', 'with', 'a', 'quantum', 'paraelectric', 'srtio_3', 'in', 'the', 'low', 'temperature', 'regime', 'we', 'identify', 'this', 'system', 'as', 'a', 'it', 'gaped', 'quantum', 'paraelectric', 'and', 'suggest', 'a', 'possible', 'experimental', 'realization', 'of', 'a', 'it', 'quantum', 'critical', 'paraelectric', 'through', 'the', 'application', 'of', 'hydrostatic', 'pressure', 'or', 'doping', 'by', 'impurity']] | [-0.1720427332050486, 0.2351119321617872, -0.07155178267865965, 0.0046224831794835115, 0.016752274040362402, -0.1731458181923587, 0.1125191221275201, 0.38334497188103117, -0.21649161638207223, -0.2678115331401972, 0.008562659592788718, -0.32252213014417314, -0.14225453814836092, 0.18965771889684033, 0.04558932395613663, 0.06049572829514334, -0.03755527141516748, 0.02110132684752549, -0.10196237981858447, -0.18648407945077713, 0.2550785587972974, 0.04232280015186343, 0.3309601034127074, 0.08686491811794726, 0.05128688112615722, -0.010499119012272113, 0.15769053506983877, 0.12488712229421489, -0.13156172385668918, -0.011627777619925264, 0.2720617353023119, -0.10729371774176212, 0.19895327307462488, -0.4096470302965951, -0.23218174260875132, -0.03810792561773568, 0.0891592856368994, 0.17208620829488572, -0.12538436556726132, -0.24999110065145444, 0.02564862121314397, -0.14228587006920412, -0.14278135606094122, -0.13057927601677302, -0.03904784370488041, 0.003020657468842317, -0.26361444631217873, 0.15018813509800255, 0.013245415299722594, 0.11175127333821092, -0.14474536983092148, -0.09974083660667991, -0.021017336988285798, 0.05944735317312385, 0.0263182552984265, 0.12003341848541, 0.22456803716948792, -0.1191427687546621, -0.09602480787107695, 0.38111064306217923, -0.08791716248179747, -0.08423539723129306, 0.1579592187333954, -0.18794803986683079, -0.050715845901110806, 0.15675115512926385, 0.0865062717029391, 0.06711477429720841, -0.13638039333873417, 0.08937186023104005, -0.009510990458680955, 0.22639410375068858, 0.022554125301922634, 0.04943803429182169, 0.29342527297478527, 0.1923301149963414, -0.00036691750514588944, 0.19366661699373938, -0.029999709949662834, -0.13250582476468656, -0.2953089719561681, -0.1504984151903693, -0.2096677208446885, 0.07317128768573476, -0.13045431625027024, -0.24745554841850717, 0.3486309735716818, 0.1639340364897292, 0.16631239809555143, -0.030287352773322635, 0.27675168435663394, 0.12885633698977172, 0.02788364618047051, 0.06117783982804275, 0.267653752858304, 0.22400367094446227, 0.12620232784355137, -0.3267141408669724, 0.05664529463185367, -0.04338131537533378] |
707.2635 | Freeze-out volume of hot dense fireball | A thermodynamically consistent excluded volume model is proposed to account
for the particle multiplicities obtained from lowest SIS energies to the
highest RHIC energies. The chemical freeze-out volumes lying in a slice of one
unit of rapidity for pions and kaons are separately inferred from this analysis
and the results are compared with the corresponding thermal freeze-out volumes
obtained from the Hanbury-Brown Twiss (HBT) pion interferometry. Furthermore,
we extract the variations of freeze-out number densities for pions and nucleons
with the center-of-mass energy in our model and compare them with the HBT data.
| hep-ph | a thermodynamically consistent excluded volume model is proposed to account for the particle multiplicities obtained from lowest sis energies to the highest rhic energies the chemical freezeout volumes lying in a slice of one unit of rapidity for pions and kaons are separately inferred from this analysis and the results are compared with the corresponding thermal freezeout volumes obtained from the hanburybrown twiss hbt pion interferometry furthermore we extract the variations of freezeout number densities for pions and nucleons with the centerofmass energy in our model and compare them with the hbt data | [['a', 'thermodynamically', 'consistent', 'excluded', 'volume', 'model', 'is', 'proposed', 'to', 'account', 'for', 'the', 'particle', 'multiplicities', 'obtained', 'from', 'lowest', 'sis', 'energies', 'to', 'the', 'highest', 'rhic', 'energies', 'the', 'chemical', 'freezeout', 'volumes', 'lying', 'in', 'a', 'slice', 'of', 'one', 'unit', 'of', 'rapidity', 'for', 'pions', 'and', 'kaons', 'are', 'separately', 'inferred', 'from', 'this', 'analysis', 'and', 'the', 'results', 'are', 'compared', 'with', 'the', 'corresponding', 'thermal', 'freezeout', 'volumes', 'obtained', 'from', 'the', 'hanburybrown', 'twiss', 'hbt', 'pion', 'interferometry', 'furthermore', 'we', 'extract', 'the', 'variations', 'of', 'freezeout', 'number', 'densities', 'for', 'pions', 'and', 'nucleons', 'with', 'the', 'centerofmass', 'energy', 'in', 'our', 'model', 'and', 'compare', 'them', 'with', 'the', 'hbt', 'data']] | [-0.007604765580586528, 0.2254043580270723, -0.1808810361801216, 0.1445733649676205, 0.028767184031406236, -0.11805116326638287, -0.02705294461620431, 0.335321602902265, -0.16335814745636076, -0.3025984510539039, -0.03664796151250841, -0.3669785495286667, 0.10328584749712258, 0.15758937257542324, 0.0512042971107588, 0.06569003493034391, 0.1127221086062491, 0.021022942397863634, -0.0762562598752719, -0.16901653924936888, 0.33517549289841087, 0.09914813333401276, 0.21988889312882337, 0.1583477197007166, 0.08654048591376512, 0.011214112790341499, -0.0461959531130169, 0.03610982012344144, -0.16622068884191654, 0.09651699807414765, 0.2503253975482557, 0.009013329832864705, 0.10512865698265453, -0.34285699610187803, -0.17337959267759837, 0.15025954489907256, 0.10166940518644868, 0.1361478448705247, -0.038597500930610366, -0.2638709190031213, 0.047433185381113845, -0.18956500292825762, -0.13780029118561776, -0.07200617268722209, -0.025653003785078243, 0.06245781962699708, -0.273288486915971, 0.15683989744553323, -0.08189734431254046, 0.05277664581894554, -0.10042597347950583, -0.2583738159218062, -0.09368791478005067, 0.06379658250158192, 0.06357583993174616, 0.027314481530739093, 0.18611449620846698, -0.11723225449414683, -0.08332247519364921, 0.4006256041948193, -0.0008600399909561039, -0.16972422839633078, 0.1578726039258062, -0.18861176567252286, -0.10383032016476156, 0.20199843752448277, 0.1556269173305081, 0.08336480329519198, -0.2024228083350325, -0.026676176318658457, -0.022528978057145592, 0.1684511833729082, 0.14059723045436606, 0.03678484312358803, 0.21611537712235604, 0.1748251799814483, -0.03102793085378825, 0.10583830483305338, -0.15613718938504306, -0.11405459365817489, -0.35292192979124926, -0.09422500447560382, -0.1666329699237981, 0.00945808118714961, -0.1035020745112761, -0.05628526748047881, 0.37188969836670466, 0.12814117362816638, 0.30633953411629056, 0.07328225493991888, 0.33867164136421296, 0.06198766073136921, 0.08602150518576093, 0.09001679934300882, 0.25630219521061065, 0.16382229250795657, 0.2241712736005905, -0.27052123234507136, -0.02178852281643338, 0.0531295328350958] |
707.2636 | CO(1-0), CO(2-1) and Neutral Gas in NGC 6946: Molecular Gas in a
Late-Type, Gas Rich, Spiral Galaxy | We present "On The Fly" maps of the CO(1-0) and CO(2-1) emission covering a
10' X 10' region of the NGC 6946. Using our CO maps and archival VLA HI
observations we create a total gas surface density map, Sigma_gas, for NGC
6946. The predominantly molecular inner gas disk transitions smoothly into an
atomic outer gas disk, with equivalent atomic and molecular gas surface
densities at R = 3.5' (6 kpc). We estimate that the total H2 mass is 3 X 10^9
Mo, roughly 1/3 of the interstellar hydrogen gas mass, and about 2% of the
dynamical mass of the galaxy at our assumed distance of 6 Mpc. The value of the
CO(2-1)/CO(1-0) line ratio ranges from 0.35 to 2; 50% of the map is covered by
very high ratio, >1, gas. The very high ratios are predominantly from interarm
regions and appear to indicate the presence of wide-spread optically thin gas.
Star formation tracers are better correlated with the total neutral gas disk
than with the molecular gas by itself implying SFR is proportional to
Sigma_gas. Using the 100 FIR and 21 cm continuum from NGC 6946 as star
formation tracers, we arrive at a gas consumption timescale of 2.8 Gyr, which
is relatively uniform across the disk. The high star formation rate at the
nucleus appears to be due to a large accumulation of molecular gas rather than
a large increase in the star formation efficiency. The mid-plane gas pressure
in the outer (R > 10 kpc) HI arms of NGC 6946 is close to the value at the
radial limit (10 kpc) of our observed CO disk. If the mid-plane gas pressure is
a factor for the formation of molecular clouds, these outer HI gas arms should
contain molecular gas which we do not see because they are beyond our detection
limit.
| astro-ph | we present on the fly maps of the co10 and co21 emission covering a 10 x 10 region of the ngc 6946 using our co maps and archival vla hi observations we create a total gas surface density map sigma_gas for ngc 6946 the predominantly molecular inner gas disk transitions smoothly into an atomic outer gas disk with equivalent atomic and molecular gas surface densities at r 35 6 kpc we estimate that the total h2 mass is 3 x 109 mo roughly 13 of the interstellar hydrogen gas mass and about 2 of the dynamical mass of the galaxy at our assumed distance of 6 mpc the value of the co21co10 line ratio ranges from 035 to 2 50 of the map is covered by very high ratio 1 gas the very high ratios are predominantly from interarm regions and appear to indicate the presence of widespread optically thin gas star formation tracers are better correlated with the total neutral gas disk than with the molecular gas by itself implying sfr is proportional to sigma_gas using the 100 fir and 21 cm continuum from ngc 6946 as star formation tracers we arrive at a gas consumption timescale of 28 gyr which is relatively uniform across the disk the high star formation rate at the nucleus appears to be due to a large accumulation of molecular gas rather than a large increase in the star formation efficiency the midplane gas pressure in the outer r 10 kpc hi arms of ngc 6946 is close to the value at the radial limit 10 kpc of our observed co disk if the midplane gas pressure is a factor for the formation of molecular clouds these outer hi gas arms should contain molecular gas which we do not see because they are beyond our detection limit | [['we', 'present', 'on', 'the', 'fly', 'maps', 'of', 'the', 'co10', 'and', 'co21', 'emission', 'covering', 'a', '10', 'x', '10', 'region', 'of', 'the', 'ngc', '6946', 'using', 'our', 'co', 'maps', 'and', 'archival', 'vla', 'hi', 'observations', 'we', 'create', 'a', 'total', 'gas', 'surface', 'density', 'map', 'sigma_gas', 'for', 'ngc', '6946', 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707.2637 | Holographic Nuclear Matter in AdS/QCD | We study the physics with finite nuclear density in the framework of AdS/QCD
with holographic baryon field included. Based on a mean field type approach, we
introduce the nucleon density as a bi-fermion condensate of the lowest mode of
the baryon field and calculate the density dependence of the chiral condensate
and the nucleon mass. We observe that the chiral condensate as well as the mass
of nucleon decrease with increasing nuclear density. We also consider the mass
splitting of charged vector mesons in iso-spin asymmetric nuclear matter.
| hep-ph hep-th nucl-th | we study the physics with finite nuclear density in the framework of adsqcd with holographic baryon field included based on a mean field type approach we introduce the nucleon density as a bifermion condensate of the lowest mode of the baryon field and calculate the density dependence of the chiral condensate and the nucleon mass we observe that the chiral condensate as well as the mass of nucleon decrease with increasing nuclear density we also consider the mass splitting of charged vector mesons in isospin asymmetric nuclear matter | [['we', 'study', 'the', 'physics', 'with', 'finite', 'nuclear', 'density', 'in', 'the', 'framework', 'of', 'adsqcd', 'with', 'holographic', 'baryon', 'field', 'included', 'based', 'on', 'a', 'mean', 'field', 'type', 'approach', 'we', 'introduce', 'the', 'nucleon', 'density', 'as', 'a', 'bifermion', 'condensate', 'of', 'the', 'lowest', 'mode', 'of', 'the', 'baryon', 'field', 'and', 'calculate', 'the', 'density', 'dependence', 'of', 'the', 'chiral', 'condensate', 'and', 'the', 'nucleon', 'mass', 'we', 'observe', 'that', 'the', 'chiral', 'condensate', 'as', 'well', 'as', 'the', 'mass', 'of', 'nucleon', 'decrease', 'with', 'increasing', 'nuclear', 'density', 'we', 'also', 'consider', 'the', 'mass', 'splitting', 'of', 'charged', 'vector', 'mesons', 'in', 'isospin', 'asymmetric', 'nuclear', 'matter']] | [-0.0805154461598828, 0.2679448638492348, -0.10341476642696018, 0.10144774137932638, -0.030593404117759994, -0.0359142133648592, 0.017698396993430586, 0.30486992543393915, -0.12536448682658374, -0.27089262156831945, -0.027014749391872265, -0.2639598371461034, -0.04369938968342136, 0.016663689621385525, 0.0951386053242128, 0.03437224191888659, -0.05873853548175909, 0.1258355202100409, -0.10648823038156313, -0.16558738278399687, 0.41934690209613606, -0.015370707472108981, 0.25756654259748757, 0.18645455891303506, 0.0791418844124895, 0.06277245197931981, -0.003106616974533112, 0.014054182239554146, -0.1669075282278837, 0.06274428576051089, 0.17884363847869364, 0.046062480584210294, 0.17342794378997828, -0.4163122250783173, -0.19552352636078882, 0.13074312298770316, 0.15861715665298767, 0.20037447375150144, -0.1229383600624384, -0.27129665711386636, 0.02644976197255098, -0.26920768550851126, -0.20914502657912884, -0.12488415457879785, -0.011304390834993683, 0.05541571631593714, -0.27359023613495415, 0.18445869542318344, -0.06036613961888096, 0.01801117964152416, -0.10236455423926766, -0.20837119820167904, -0.05278399525824087, -0.004153619663239541, 0.11496153320794375, 0.11723166225816715, 0.22297507934060626, -0.21841884320945776, -0.07461733799639413, 0.39598378304138104, -0.14059961998877538, -0.13513810145245356, 0.05479005115921609, -0.19851382059807127, -0.09499775356909429, 0.07462951908184384, 0.2122683263045143, 0.0794325851761228, -0.11302947772359899, 0.09505911258086351, -0.08294868864521215, 0.1764664868691894, 0.047089654677124185, 0.09262026749837043, 0.2511394870763814, 0.20181440382227514, 0.01649781812871383, 0.0880475402386351, -0.1262050436661494, -0.10429509739730168, -0.3494397265497934, -0.12205597471488132, -0.18403816641280588, 0.024281123790635982, -0.0766497783952218, -0.1417675577315756, 0.42756500406275416, 0.06451412405691702, 0.2536149612966586, -0.004007036734203046, 0.3105763442264023, 0.14198729892351283, 0.09873895056080073, 0.07093200434676626, 0.2574947615027089, 0.2876942017835311, 0.11333775328239426, -0.38226828136777674, -0.12090777003322728, 0.053875378232491625] |
707.2638 | The UHECR spectrum measured at the Pierre Auger Observatory and its
astrophysical implications | The Southern part of the Pierre Auger Observatory is nearing completion, and
has been in stable operation since January 2004 while it has grown in size. The
large sample of data collected so far has led to a significant improvement in
the measurement of the energy spectrum of UHE cosmic rays over that previously
reported by the Pierre Auger Observatory, both in statistics and in systematic
uncertainties. We summarize two measurements of the energy spectrum, one based
on the high-statistics surface detector data, and the other of the hybrid data,
where the precision of the fluorescence measurements is enhanced by additional
information from the surface array. The complementarity of the two approaches
is emphasized and results are compared. Possible astrophysical implications of
our measurements, and in particular the presence of spectral features, are
discussed.
| astro-ph | the southern part of the pierre auger observatory is nearing completion and has been in stable operation since january 2004 while it has grown in size the large sample of data collected so far has led to a significant improvement in the measurement of the energy spectrum of uhe cosmic rays over that previously reported by the pierre auger observatory both in statistics and in systematic uncertainties we summarize two measurements of the energy spectrum one based on the highstatistics surface detector data and the other of the hybrid data where the precision of the fluorescence measurements is enhanced by additional information from the surface array the complementarity of the two approaches is emphasized and results are compared possible astrophysical implications of our measurements and in particular the presence of spectral features are discussed | [['the', 'southern', 'part', 'of', 'the', 'pierre', 'auger', 'observatory', 'is', 'nearing', 'completion', 'and', 'has', 'been', 'in', 'stable', 'operation', 'since', 'january', '2004', 'while', 'it', 'has', 'grown', 'in', 'size', 'the', 'large', 'sample', 'of', 'data', 'collected', 'so', 'far', 'has', 'led', 'to', 'a', 'significant', 'improvement', 'in', 'the', 'measurement', 'of', 'the', 'energy', 'spectrum', 'of', 'uhe', 'cosmic', 'rays', 'over', 'that', 'previously', 'reported', 'by', 'the', 'pierre', 'auger', 'observatory', 'both', 'in', 'statistics', 'and', 'in', 'systematic', 'uncertainties', 'we', 'summarize', 'two', 'measurements', 'of', 'the', 'energy', 'spectrum', 'one', 'based', 'on', 'the', 'highstatistics', 'surface', 'detector', 'data', 'and', 'the', 'other', 'of', 'the', 'hybrid', 'data', 'where', 'the', 'precision', 'of', 'the', 'fluorescence', 'measurements', 'is', 'enhanced', 'by', 'additional', 'information', 'from', 'the', 'surface', 'array', 'the', 'complementarity', 'of', 'the', 'two', 'approaches', 'is', 'emphasized', 'and', 'results', 'are', 'compared', 'possible', 'astrophysical', 'implications', 'of', 'our', 'measurements', 'and', 'in', 'particular', 'the', 'presence', 'of', 'spectral', 'features', 'are', 'discussed']] | [-0.0751586549241207, 0.12410064887102526, -0.07235880045970874, 0.05359621527591727, -0.03605336691391891, -0.03496912963785676, 0.0051570757459015095, 0.36710018222567753, -0.20143031202423484, -0.385600510275742, 0.1234388910216599, -0.3794159484512882, -0.07622548082753071, 0.2557793558495286, -0.004809572611615729, 0.058268792843863146, 0.12659884471474075, -0.0006448396467673245, -0.037354181164879104, -0.21606084320054791, 0.2966149868009223, 0.19642039015194152, 0.30681114097876444, 0.07767246748014951, 0.09346203778005108, -0.02862354539466827, -0.11930908316245942, -0.003983761037095214, -0.09878911432548845, 0.10653196006088948, 0.26425469048154443, 0.13720336138208244, 0.18501829642302065, -0.41774049381100625, -0.2087859724988855, 0.10081651198430988, 0.08570670336137401, 0.05680313950175169, -0.06763334908442739, -0.31232741342530823, 0.049498874915645585, -0.14100466062203607, -0.09472719446839348, 0.03226195785925904, -0.006316695424880999, 0.02026212407899812, -0.19595719456895075, 0.03008755087963681, 0.006444678468101505, 0.06408663953953325, -0.065922717688911, -0.16119446053600578, -0.0179924377546048, 0.1330655317531148, 0.08337487373674816, 0.005414712459106109, 0.10985866179967772, -0.1063134975821725, -0.12472513794843386, 0.33878570806179475, -0.08201010237315864, -0.05880736714618197, 0.16913874137020712, -0.222564850363936, -0.16885778178989108, 0.17887512269193556, 0.15545991100301382, 0.074443387552234, -0.1763363580407102, 0.13567651195734837, -0.020571142848608875, 0.15382998778637666, 0.05393427218060329, 0.06015889927981171, 0.17609548186118812, 0.2067760814367029, 0.06711345063800465, 0.05770992630017129, -0.21109228012840084, -0.026767868465664032, -0.26293424471913934, -0.13743681654528672, -0.21659976402784129, 0.0333288287702225, -0.02417512839508448, -0.09194676234011552, 0.4262710992775079, 0.14028713923406355, 0.18981971995168323, -0.05129433347871388, 0.31198369536493253, 0.05173334422514343, 0.0781108472120962, 0.03479616443014968, 0.34560969437180616, 0.1047065333643956, 0.12169918253993504, -0.20935534124450286, 0.07078926146913098, -0.03134067323399402] |
707.2639 | On the vierbein formalism of general relativity | Both the Einstein-Hilbert action and the Einstein equations are discussed
under the absolute vierbein formalism. Taking advantage of this form, we prove
that the "kinetic energy" term, i.e., the quadratic term of time derivative
term, in the Lagrangian of the Einstein-Hilbert action is non-positive
definitive. And then, we present two groups of coordinate conditions that lead
to positive definitive kinetic energy term in the Lagrangian, as well as the
corresponding actions with positive definitive kinetic energy term,
respectively. Based on the ADM decomposition, the Hamiltonian representation
and canonical quantization of general relativity taking advantage of the
actions with positive definitive kinetic energy term are discussed; especially,
the Hamiltonian constraints with positive definitive kinetic energy term are
given, respectively. Finally, we present a group of gauge conditions such that
there is not any second time derivative term in the ten Einstein equations.
| gr-qc | both the einsteinhilbert action and the einstein equations are discussed under the absolute vierbein formalism taking advantage of this form we prove that the kinetic energy term ie the quadratic term of time derivative term in the lagrangian of the einsteinhilbert action is nonpositive definitive and then we present two groups of coordinate conditions that lead to positive definitive kinetic energy term in the lagrangian as well as the corresponding actions with positive definitive kinetic energy term respectively based on the adm decomposition the hamiltonian representation and canonical quantization of general relativity taking advantage of the actions with positive definitive kinetic energy term are discussed especially the hamiltonian constraints with positive definitive kinetic energy term are given respectively finally we present a group of gauge conditions such that there is not any second time derivative term in the ten einstein equations | [['both', 'the', 'einsteinhilbert', 'action', 'and', 'the', 'einstein', 'equations', 'are', 'discussed', 'under', 'the', 'absolute', 'vierbein', 'formalism', 'taking', 'advantage', 'of', 'this', 'form', 'we', 'prove', 'that', 'the', 'kinetic', 'energy', 'term', 'ie', 'the', 'quadratic', 'term', 'of', 'time', 'derivative', 'term', 'in', 'the', 'lagrangian', 'of', 'the', 'einsteinhilbert', 'action', 'is', 'nonpositive', 'definitive', 'and', 'then', 'we', 'present', 'two', 'groups', 'of', 'coordinate', 'conditions', 'that', 'lead', 'to', 'positive', 'definitive', 'kinetic', 'energy', 'term', 'in', 'the', 'lagrangian', 'as', 'well', 'as', 'the', 'corresponding', 'actions', 'with', 'positive', 'definitive', 'kinetic', 'energy', 'term', 'respectively', 'based', 'on', 'the', 'adm', 'decomposition', 'the', 'hamiltonian', 'representation', 'and', 'canonical', 'quantization', 'of', 'general', 'relativity', 'taking', 'advantage', 'of', 'the', 'actions', 'with', 'positive', 'definitive', 'kinetic', 'energy', 'term', 'are', 'discussed', 'especially', 'the', 'hamiltonian', 'constraints', 'with', 'positive', 'definitive', 'kinetic', 'energy', 'term', 'are', 'given', 'respectively', 'finally', 'we', 'present', 'a', 'group', 'of', 'gauge', 'conditions', 'such', 'that', 'there', 'is', 'not', 'any', 'second', 'time', 'derivative', 'term', 'in', 'the', 'ten', 'einstein', 'equations']] | [-0.19864948643809052, 0.10484753433096466, -0.08699789439354436, 0.10361022203384589, -0.1360646146861506, -0.12123642911051288, -0.04064055189411057, 0.30077734377221965, -0.2235189763868743, -0.29967764014021514, 0.07081495680935443, -0.26174481494471113, -0.1302618918253492, 0.10615461162813272, -0.01970849812100146, -0.002535951399766173, 0.07194761424127252, 0.1277780302846474, -0.12064026918506633, -0.2562308890335526, 0.37187545519348575, 0.0691748666147708, 0.17577297142739837, 0.092889570166664, 0.20342497536516252, -0.0345895690397617, -0.03403650562060957, 0.040771274943010395, -0.1243742927371715, 0.03454168368599886, 0.19662347517194265, 0.054032947235668066, 0.27122543214536304, -0.4422427927084426, -0.21400514389024983, 0.13085390256836693, 0.039090905129638705, 0.10323838817602987, -0.03526115972888887, -0.2780107992522894, 0.038321728426868144, -0.186755510251837, -0.10206895635784471, -0.10780415245734737, 0.014048697588740722, -0.02708499050362313, -0.25626771959495986, 0.12317843657938089, 0.0644642109891849, 0.030838903442606435, -0.1638857859933207, -0.14767317836839997, -0.03509036403525859, 0.08493845113255877, 0.13772978734040092, 0.03556644159917396, 0.06237396224342445, -0.08710221530612003, -0.04546220972143272, 0.4275349621984659, -0.16172400998580766, -0.28661485122027974, 0.11264900965054671, -0.11695032161891672, -0.1317207229799254, 0.11129214124661084, 0.08088693435548257, 0.12449770624227557, -0.16385213830607367, 0.1494402475576643, 0.014862438188271319, 0.12003247185563999, 0.054448326973654065, 0.06691607356885554, 0.18295854570489403, 0.05837439533640096, 0.09034850356228491, 0.07396330110107859, 0.0038777895169398676, -0.14796830014926746, -0.4172477490724401, -0.1763389398711942, -0.14029848593591004, 0.10389485896875873, -0.12454305226877017, -0.13666869791435962, 0.38705381849311715, 0.10058777639972614, 0.11656294186460844, 0.11621705559577714, 0.2699002223948004, 0.20184619604041865, 0.07997540271253134, 0.047464260045465424, 0.2571956884142355, 0.1262579174012157, 0.09844765478930047, -0.26272163464021475, -0.05185422781980365, 0.16427919060216412] |
707.264 | Observations of B335 in the Millimeter Continuum and the 226 GHz H2CO
Line | The protostar B335 was observed in the 1.3 mm continuum and in the H2CO 312 -
211 line with an angular resolution of about 8 arcsec. The mass of the inner
envelope detected by the dust continuum emission is about 0.02 Msun. The H2CO
spectrum at the protostellar position shows a blue-skewed double peak profile,
suggesting that the kinematics of the inner envelope is dominated by infall
motion. When the blueshifted and the redshifted peaks were imaged separately,
however, there is a small east-west displacement between the maximum positions.
This displacement suggests that some part of the H2CO emission might come from
the outflowing gas. A combined effect of the infalling envelope and the outflow
on the radiative transfer is discussed. This effect can make the line profile
asymmetry severer than what is expected from infall-only models.
| astro-ph | the protostar b335 was observed in the 13 mm continuum and in the h2co 312 211 line with an angular resolution of about 8 arcsec the mass of the inner envelope detected by the dust continuum emission is about 002 msun the h2co spectrum at the protostellar position shows a blueskewed double peak profile suggesting that the kinematics of the inner envelope is dominated by infall motion when the blueshifted and the redshifted peaks were imaged separately however there is a small eastwest displacement between the maximum positions this displacement suggests that some part of the h2co emission might come from the outflowing gas a combined effect of the infalling envelope and the outflow on the radiative transfer is discussed this effect can make the line profile asymmetry severer than what is expected from infallonly models | [['the', 'protostar', 'b335', 'was', 'observed', 'in', 'the', '13', 'mm', 'continuum', 'and', 'in', 'the', 'h2co', '312', '211', 'line', 'with', 'an', 'angular', 'resolution', 'of', 'about', '8', 'arcsec', 'the', 'mass', 'of', 'the', 'inner', 'envelope', 'detected', 'by', 'the', 'dust', 'continuum', 'emission', 'is', 'about', '002', 'msun', 'the', 'h2co', 'spectrum', 'at', 'the', 'protostellar', 'position', 'shows', 'a', 'blueskewed', 'double', 'peak', 'profile', 'suggesting', 'that', 'the', 'kinematics', 'of', 'the', 'inner', 'envelope', 'is', 'dominated', 'by', 'infall', 'motion', 'when', 'the', 'blueshifted', 'and', 'the', 'redshifted', 'peaks', 'were', 'imaged', 'separately', 'however', 'there', 'is', 'a', 'small', 'eastwest', 'displacement', 'between', 'the', 'maximum', 'positions', 'this', 'displacement', 'suggests', 'that', 'some', 'part', 'of', 'the', 'h2co', 'emission', 'might', 'come', 'from', 'the', 'outflowing', 'gas', 'a', 'combined', 'effect', 'of', 'the', 'infalling', 'envelope', 'and', 'the', 'outflow', 'on', 'the', 'radiative', 'transfer', 'is', 'discussed', 'this', 'effect', 'can', 'make', 'the', 'line', 'profile', 'asymmetry', 'severer', 'than', 'what', 'is', 'expected', 'from', 'infallonly', 'models']] | [-0.06871417373703378, 0.11077612253408275, -0.0463312317410277, 0.06418749502109777, -0.06305934246629477, -0.06355194451839284, -0.01327727886468724, 0.46513615642432815, -0.1984079327772768, -0.30492957428925566, 0.06891985097727565, -0.2711311119436114, 0.010072078169495971, 0.1101078931759629, 0.005029914552276885, -0.050673655667169776, 0.049858070467598735, -0.07549169107029835, -0.06516573786632054, -0.13527846515040706, 0.30040478435931384, 0.11112423068153914, 0.14544269080377287, 0.05552818004248871, 0.07035179465871166, -0.15792534131367036, -0.054205978848040105, -0.05817090746153284, -0.12392806333233171, 0.06430753957549179, 0.18383953503143857, 0.10250446571175147, 0.19862926191891786, -0.3316575341426802, -0.2133418295679062, 0.03349984171627848, 0.19751270969863982, 0.05907426179145221, 0.0024330973099158317, -0.28386504095461634, 0.03612357383611164, -0.1521439368631777, -0.18176232932342423, 0.16030053629505414, 0.07436705723887792, -0.01624460473604914, -0.2160979616731681, 0.16624821499334994, 0.05841718058929675, 0.10058334090367511, -0.07729186666784463, -0.1532113021446599, -0.13696760064404873, 0.0499001656169572, 0.035140331479272355, 0.09109434602368209, 0.2559030909237831, -0.10260813348340216, -0.023946892207971325, 0.4038817768847501, -0.1029090828966151, -0.029364111026128133, 0.173103290223689, -0.259823925341307, -0.13330900193433518, 0.3027789929174577, 0.07453609575276021, 0.09188553138498079, -0.0920855326566164, -0.051854070232474, -0.04718295088106835, 0.26220742971808825, 0.11401788993152204, 0.009242308201889197, 0.34778177285635914, 0.056157714419963735, 0.03870108392503527, 0.14745319060705325, -0.2841598286690121, -0.08868171798962134, -0.25837271982045085, -0.10538401921728142, -0.1337069457155411, 0.09770167989621836, -0.11204910618738116, -0.05360842477530241, 0.29790069669209146, 0.09112483209550933, 0.26439785569630286, 0.01753838005113519, 0.3283651784338333, 0.10942308119049779, 0.10584485005863287, 0.15075121764783506, 0.3281479621592788, 0.1953607264478234, 0.15654251910401162, -0.26997250148129687, 0.10302611591501368, -0.020241250616877718] |
707.2641 | $J/\psi$ suppression in Au+Au collisions at RHIC : colour screening
scenario in the bag model at variable participant numbers | We have modified the colour screening theory of Chu and Matsui by properly
incorporating bag model equation of state for quark gluon plasma (QGP). We have
also chosen the pressure parametrization rather than parametrizing energy
density in the transverse plane. We assume that the QGP dense medium is
expanding in the longitudinal direction obeying Bjorken boost invariant scaling
law. Sequential melting of $\chi_c$, $\psi^{'}$ and $J/\psi$ is also considered
in this scenario. We have applied above formulation to the recent PHENIX
experimental data of $J/\psi$ suppression in Au + Au collisions at RHIC. We
find that the model gives a good description of data at mid-rapidity in terms
of survival probability versus number of participants without any necessity of
implementing (3+1)-dimensional expansion of the deconfined medium.
| hep-ph | we have modified the colour screening theory of chu and matsui by properly incorporating bag model equation of state for quark gluon plasma qgp we have also chosen the pressure parametrization rather than parametrizing energy density in the transverse plane we assume that the qgp dense medium is expanding in the longitudinal direction obeying bjorken boost invariant scaling law sequential melting of chi_c psi and jpsi is also considered in this scenario we have applied above formulation to the recent phenix experimental data of jpsi suppression in au au collisions at rhic we find that the model gives a good description of data at midrapidity in terms of survival probability versus number of participants without any necessity of implementing 31dimensional expansion of the deconfined medium | [['we', 'have', 'modified', 'the', 'colour', 'screening', 'theory', 'of', 'chu', 'and', 'matsui', 'by', 'properly', 'incorporating', 'bag', 'model', 'equation', 'of', 'state', 'for', 'quark', 'gluon', 'plasma', 'qgp', 'we', 'have', 'also', 'chosen', 'the', 'pressure', 'parametrization', 'rather', 'than', 'parametrizing', 'energy', 'density', 'in', 'the', 'transverse', 'plane', 'we', 'assume', 'that', 'the', 'qgp', 'dense', 'medium', 'is', 'expanding', 'in', 'the', 'longitudinal', 'direction', 'obeying', 'bjorken', 'boost', 'invariant', 'scaling', 'law', 'sequential', 'melting', 'of', 'chi_c', 'psi', 'and', 'jpsi', 'is', 'also', 'considered', 'in', 'this', 'scenario', 'we', 'have', 'applied', 'above', 'formulation', 'to', 'the', 'recent', 'phenix', 'experimental', 'data', 'of', 'jpsi', 'suppression', 'in', 'au', 'au', 'collisions', 'at', 'rhic', 'we', 'find', 'that', 'the', 'model', 'gives', 'a', 'good', 'description', 'of', 'data', 'at', 'midrapidity', 'in', 'terms', 'of', 'survival', 'probability', 'versus', 'number', 'of', 'participants', 'without', 'any', 'necessity', 'of', 'implementing', '31dimensional', 'expansion', 'of', 'the', 'deconfined', 'medium']] | [-0.080193918870762, 0.214376210372895, -0.20423717352375387, 0.0596159094767645, -0.038220845498144626, -0.08360491690412164, 0.0006536914138123393, 0.3653834801726043, -0.17910439122840763, -0.23913966726511718, -0.07249726026598365, -0.31424243561178444, 0.029453787337988615, 0.10244482252560556, 0.010953176289796829, 0.09533526971191168, 0.0616663774587214, 0.01748659836128354, -0.05803513826429844, -0.2339271065648645, 0.32549862066097557, 0.056831013046205046, 0.26707149542495606, 0.14128972942382098, 0.07345895871706307, 0.0437255508583039, -0.021942461375147104, 0.03359627030044794, -0.15220599123928696, 0.0027678588835988193, 0.2358819918432273, 0.0694888615552336, 0.17719245669431985, -0.38883996491506695, -0.2301803994718939, 0.08453726866655052, 0.13520993155241012, 0.0965033515408868, -0.05664602243900299, -0.2284811623580754, 0.11673777276650071, -0.2568664619605988, -0.16028349851444362, -0.06970573440939189, 0.014541904645040632, -0.01636945852637291, -0.30089354806765917, 0.17103934627911077, 0.0036325934398919344, 0.05275729815661907, -0.060258527154102924, -0.15157204326987267, -0.047210923921316865, -0.0034938786998391152, 0.06772852335311473, 0.1443157170061022, 0.1728049436993897, -0.19448073518741876, -0.08512918427959085, 0.3927761180102825, -0.045812950422638096, -0.15928806171193718, 0.13900187339633704, -0.21161809584125876, -0.12061249235272407, 0.1395397025346756, 0.20863889566808938, 0.08428569199267076, -0.16020468443632127, 0.07307257705833763, -0.0817599709900096, 0.12960521304607392, 0.11936508157663048, 0.04878371658176184, 0.17838707817345859, 0.1851568891555071, -0.04417489766143262, 0.1140402769446373, -0.05937125381082296, -0.11295186675339937, -0.3916061759501463, -0.10558529513888061, -0.13422389476094396, 0.044663790699094534, -0.13077586621022783, -0.10738064420968293, 0.348410704953596, 0.1394233415320632, 0.2312195640411228, -0.018936262022703886, 0.28673234064877035, 0.10035149436444044, 0.027644569788128136, 0.12146107447519898, 0.24126191267371178, 0.16971063502319156, 0.18428846623003484, -0.25386893542669714, 0.05091754405293614, 0.0886684497166425] |
707.2642 | Comment on 'Critical behaviour in the relaminarization of localized
turbulence in pipe flow' | This is a comment on arXiv:physics/0608292, subsequently published in Phys
Rev Lett, 98, 014501 (2007), in which Willis and Kerswell study in direct
numerical simulations the statistics of turbulent lifetimes in pipe flow. They
suggest that their data for six different Reynolds numbers support a divergence
of the lifetime near a Reynolds number of about 1870. However, their conclusion
is not compelling: a re-analysis of their data shows that it is also compatible
with an exponentially increasing lifetime.
| physics.flu-dyn | this is a comment on arxivphysics0608292 subsequently published in phys rev lett 98 014501 2007 in which willis and kerswell study in direct numerical simulations the statistics of turbulent lifetimes in pipe flow they suggest that their data for six different reynolds numbers support a divergence of the lifetime near a reynolds number of about 1870 however their conclusion is not compelling a reanalysis of their data shows that it is also compatible with an exponentially increasing lifetime | [['this', 'is', 'a', 'comment', 'on', 'arxivphysics0608292', 'subsequently', 'published', 'in', 'phys', 'rev', 'lett', '98', '014501', '2007', 'in', 'which', 'willis', 'and', 'kerswell', 'study', 'in', 'direct', 'numerical', 'simulations', 'the', 'statistics', 'of', 'turbulent', 'lifetimes', 'in', 'pipe', 'flow', 'they', 'suggest', 'that', 'their', 'data', 'for', 'six', 'different', 'reynolds', 'numbers', 'support', 'a', 'divergence', 'of', 'the', 'lifetime', 'near', 'a', 'reynolds', 'number', 'of', 'about', '1870', 'however', 'their', 'conclusion', 'is', 'not', 'compelling', 'a', 'reanalysis', 'of', 'their', 'data', 'shows', 'that', 'it', 'is', 'also', 'compatible', 'with', 'an', 'exponentially', 'increasing', 'lifetime']] | [-0.14620391323832893, 0.15576308719717818, -0.08257356784971696, -0.017155477635006047, -0.06310268450383243, -0.037608981737262244, 0.07807502005394402, 0.33002272459932347, -0.1424932684023659, -0.33478833480387343, 0.0685397296140043, -0.2760015812690382, -0.11494590401310813, 0.2658588420357797, -0.10517275151978066, 0.03403436154272262, 0.10098868867914591, 0.001914309724778324, -0.010435307714422899, -0.24934327027264547, 0.19779689852511148, 0.11278639286272711, 0.31825426196703666, 0.09250157896743773, 0.019090140132572164, -0.05157969997857104, -0.0733150453730063, 0.0184430036672645, -0.18948149585634524, 0.04800185201955693, 0.1988876902425734, 0.10230239419653625, 0.2783965217070533, -0.40796976451846684, -0.2065992445999442, 0.05316185664579079, 0.1127818731905578, 0.106672732714358, -0.01556122987138035, -0.2765543878368743, 0.10457755108106906, -0.22831185289670702, -0.12073725163815664, -0.08620663463779084, 0.14428158924467377, 0.014212556121350787, -0.25326790846279496, 0.15893321839583033, 0.03950622890676771, 0.12124394851603679, -0.035999473377868726, -0.09542184714953621, -0.07585018042886219, 0.0044466122431535415, 0.07896119917670337, 0.030680757000824656, 0.06720417389017228, -0.11622990026175008, -0.09679493829063684, 0.32017802676585105, -0.010944472443669213, -0.1512792996650973, 0.24455966759327943, -0.16148593553716872, -0.11467065976618172, 0.15721676998179068, 0.1655998911660213, 0.11716365306214853, -0.12095825314860452, 0.024169936412552297, -0.14366125611682096, 0.1706802271693558, 0.0901704788353149, -0.02565949042542201, 0.18564269372395106, 0.1392450477903733, -0.03166602072820019, 0.05268139675162829, -0.09537818407119772, -0.10503279098442622, -0.2847550330750112, -0.19605415769514034, -0.21427752058529717, 0.08811823289267652, -0.00895334405060283, -0.13614483220599494, 0.33992692177159733, 0.17938505606302482, 0.2670178010836002, 0.04367094120621536, 0.24020852617822686, 0.060314527059627046, 0.03147035426242495, 0.146535666060767, 0.3021858377357969, 0.16822769881117267, 0.17164479132572358, -0.19805746628334384, 0.006042356457706396, -0.029631703886409084] |
707.2643 | Novel QCD Phenomena | I discuss a number of novel topics in QCD, including the use of the AdS/CFT
correspondence between Anti-de Sitter space and conformal gauge theories to
obtain an analytically tractable approximation to QCD in the regime where the
QCD coupling is large and constant. In particular, there is an exact
correspondence between the fifth-dimension coordinate z of AdS space and a
specific impact variable zeta which measures the separation of the quark
constituents within the hadron in ordinary space-time. This connection allows
one to compute the analytic form of the frame-independent light-front
wavefunctions of mesons and baryons, the fundamental entities which encode
hadron properties and allow the computation of exclusive scattering amplitudes.
I also discuss a number of novel phenomenological features of QCD. Initial- and
final-state interactions from gluon-exchange, normally neglected in the parton
model, have a profound effect in QCD hard-scattering reactions, leading to
leading-twist single-spin asymmetries, diffractive deep inelastic scattering,
diffractive hard hadronic reactions, the breakdown of the Lam Tung relation in
Drell-Yan reactions, and nuclear shadowing and non-universal
antishadowing--leading-twist physics not incorporated in the light-front
wavefunctions of the target computed in isolation. I also discuss tests of
hidden color in nuclear wavefunctions, the use of diffraction to materialize
the Fock states of a hadronic projectile and test QCD color transparency, and
anomalous heavy quark effects. The presence of direct higher-twist processes
where a proton is produced in the hard subprocess can explain the large
proton-to-pion ratio seen in high-centrality heavy-ion collisions.
| hep-ph | i discuss a number of novel topics in qcd including the use of the adscft correspondence between antide sitter space and conformal gauge theories to obtain an analytically tractable approximation to qcd in the regime where the qcd coupling is large and constant in particular there is an exact correspondence between the fifthdimension coordinate z of ads space and a specific impact variable zeta which measures the separation of the quark constituents within the hadron in ordinary spacetime this connection allows one to compute the analytic form of the frameindependent lightfront wavefunctions of mesons and baryons the fundamental entities which encode hadron properties and allow the computation of exclusive scattering amplitudes i also discuss a number of novel phenomenological features of qcd initial and finalstate interactions from gluonexchange normally neglected in the parton model have a profound effect in qcd hardscattering reactions leading to leadingtwist singlespin asymmetries diffractive deep inelastic scattering diffractive hard hadronic reactions the breakdown of the lam tung relation in drellyan reactions and nuclear shadowing and nonuniversal antishadowingleadingtwist physics not incorporated in the lightfront wavefunctions of the target computed in isolation i also discuss tests of hidden color in nuclear wavefunctions the use of diffraction to materialize the fock states of a hadronic projectile and test qcd color transparency and anomalous heavy quark effects the presence of direct highertwist processes where a proton is produced in the hard subprocess can explain the large protontopion ratio seen in highcentrality heavyion collisions | [['i', 'discuss', 'a', 'number', 'of', 'novel', 'topics', 'in', 'qcd', 'including', 'the', 'use', 'of', 'the', 'adscft', 'correspondence', 'between', 'antide', 'sitter', 'space', 'and', 'conformal', 'gauge', 'theories', 'to', 'obtain', 'an', 'analytically', 'tractable', 'approximation', 'to', 'qcd', 'in', 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'explain', 'the', 'large', 'protontopion', 'ratio', 'seen', 'in', 'highcentrality', 'heavyion', 'collisions']] | [-0.07561106637143337, 0.2308196478326322, -0.16128230414113745, 0.17077591858538685, -0.0591708593463048, -0.08221316150815826, 0.023343494440013282, 0.3322021274419486, -0.21242627836494468, -0.19164221787301838, -0.05207172304022411, -0.2782376259917125, -0.04576535401134636, 0.05502386467458203, 0.048998025119086255, 0.09033041753063425, 0.031731174051307515, 0.0006786265135319395, -0.08131959938544257, -0.18411789910746584, 0.35301834113380204, 0.02254430455632396, 0.2283106371548704, 0.17517111782938982, 0.0777855721665046, 0.08266022832571598, -0.05509664030353085, -0.04582383583346959, -0.09679498185436357, 0.07315713692105795, 0.284207191864271, 0.06549237197200568, 0.11979936517694241, -0.4197094930530226, -0.15844474374008757, 0.09614336124067156, 0.17515505178762245, 0.1179724932197974, -0.027024654558982914, -0.27018109588568245, 0.01651184877750179, 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707.2644 | Oscillation of spin polarization in a two-dimensional hole gas under a
perpendicular magnetic field | Spin-charge coupling is studied for a strongly confined two-dimensional hole
gas subject to a perpendicular magnetic field. The study is based on
spin-charge coupled drift-diffusion equations derived from quantum-kinetic
equations in an exact manner. The spin-orbit interaction induces an extra
out-of-plane spin polarization. This contribution exhibits a persistent
oscillatory pattern in the strong-coupling regime.
| cond-mat.mes-hall | spincharge coupling is studied for a strongly confined twodimensional hole gas subject to a perpendicular magnetic field the study is based on spincharge coupled driftdiffusion equations derived from quantumkinetic equations in an exact manner the spinorbit interaction induces an extra outofplane spin polarization this contribution exhibits a persistent oscillatory pattern in the strongcoupling regime | [['spincharge', 'coupling', 'is', 'studied', 'for', 'a', 'strongly', 'confined', 'twodimensional', 'hole', 'gas', 'subject', 'to', 'a', 'perpendicular', 'magnetic', 'field', 'the', 'study', 'is', 'based', 'on', 'spincharge', 'coupled', 'driftdiffusion', 'equations', 'derived', 'from', 'quantumkinetic', 'equations', 'in', 'an', 'exact', 'manner', 'the', 'spinorbit', 'interaction', 'induces', 'an', 'extra', 'outofplane', 'spin', 'polarization', 'this', 'contribution', 'exhibits', 'a', 'persistent', 'oscillatory', 'pattern', 'in', 'the', 'strongcoupling', 'regime']] | [-0.2868608775197235, 0.18301618166959896, -0.037632608165343605, 0.024915366659923974, -0.07211987329302011, -0.16850809277794151, -0.049908043540738245, 0.33883275576280775, -0.2636349439551985, -0.2165610897872183, -0.06674513987834668, -0.25330205682527135, -0.1398773486553519, 0.17880489032163663, 0.06869074962688265, -0.047678969845744885, -0.03264425255366842, -0.04576056881773251, -0.08230320854043519, -0.12690323442910556, 0.2737221297359577, -0.010059246543311962, 0.34700564483905005, 0.06386908903045373, 0.11913002446224844, -0.0005842179439410016, 0.09657798468348726, 0.0546631472254241, -0.13685228115085651, 0.030378729173982585, 0.20671253653213004, -0.16239163149320693, 0.19536907236195272, -0.4914783107427259, -0.17116743722861563, -0.05780416889185155, 0.19678990432833046, 0.21553211545364725, -0.08966097767956348, -0.2783311022169612, -0.06397233101435834, -0.19007610971177066, -0.165775290293688, -0.05987407568048824, 0.024870134297223692, -0.03602014956737144, -0.3144729808662777, 0.16300539235601685, 0.10877517997114747, 0.05340859713032842, -0.10652925882109061, -0.013522075109735684, -0.05105492865873708, -0.01019644307800465, 0.0894812497275847, 0.1206355003890133, 0.16087819140456203, -0.15017101420973497, -0.09860579476312355, 0.3403396988460035, -0.1313131780501593, -0.22660629237415614, 0.19087467523705628, -0.14144720871829325, -0.06797856756451505, 0.19681021329705362, 0.15960146548847357, 0.1332163308850593, -0.2180675533513918, 0.17282298284462067, -0.05460632349260979, 0.2015059076387573, -0.004344400566036778, 0.057950647064933074, 0.31354133865830525, 0.20849907438753656, 0.06152537875567322, 0.17181872291904357, -0.09612833613236607, -0.14083368338092608, -0.2174881687387824, -0.08604731366547101, -0.19760551855519967, 0.12012122037682545, -0.06911242122899879, -0.2019149414781067, 0.3838026758835272, 0.1449885649468612, 0.1304421390199827, -0.08419218442954675, 0.2593183593190689, 0.20154131712560128, 0.00787839645312892, 0.02917643037141749, 0.2952990032111605, 0.26250035495117857, 0.14273498956700442, -0.3755513922509703, 0.003434023414566009, 0.08506895923400642] |
707.2645 | Modelization of flow electrification in a polymer melt | Flow electrification of polymer melts is an important side effect of polymer
processing. The studies dealing with this phenomenon are seldom and most of the
scientific work has been focused on flow electrification of aqueous and
insulating Newtonian liquids. From that prior art it is well established that
the flow electrification in Newtonian liquids is a consequence of the formation
of an ionic double layer. Convection of this layer induces the electrification
of the liquid at the outlet of the pipe. In those models, the key parameters
governing the flow electrification are thus the intrinsic electrical properties
of the polymer and the flow characteristics. In this work, we reconsider the
assumptions made previously and we propose a new approach to modelise the flow
electrification in the particular case of non-Newtonian polymer materials in
laminar flow conditions. We establish that, a key parameter for the
electrification quantification in the polymer melt is the shape of the velocity
profile. Additionally, in some cases, we show that a slip velocity at the
polymer/die wall interface must be considered to describe accurately the
electrification. As a consequence, we deduce that the slip velocity at the
interface can be calculated by measuring the electrification: this work gives
an alternative manner to measure the slip velocity during polymer flow.
| physics.class-ph | flow electrification of polymer melts is an important side effect of polymer processing the studies dealing with this phenomenon are seldom and most of the scientific work has been focused on flow electrification of aqueous and insulating newtonian liquids from that prior art it is well established that the flow electrification in newtonian liquids is a consequence of the formation of an ionic double layer convection of this layer induces the electrification of the liquid at the outlet of the pipe in those models the key parameters governing the flow electrification are thus the intrinsic electrical properties of the polymer and the flow characteristics in this work we reconsider the assumptions made previously and we propose a new approach to modelise the flow electrification in the particular case of nonnewtonian polymer materials in laminar flow conditions we establish that a key parameter for the electrification quantification in the polymer melt is the shape of the velocity profile additionally in some cases we show that a slip velocity at the polymerdie wall interface must be considered to describe accurately the electrification as a consequence we deduce that the slip velocity at the interface can be calculated by measuring the electrification this work gives an alternative manner to measure the slip velocity during polymer flow | [['flow', 'electrification', 'of', 'polymer', 'melts', 'is', 'an', 'important', 'side', 'effect', 'of', 'polymer', 'processing', 'the', 'studies', 'dealing', 'with', 'this', 'phenomenon', 'are', 'seldom', 'and', 'most', 'of', 'the', 'scientific', 'work', 'has', 'been', 'focused', 'on', 'flow', 'electrification', 'of', 'aqueous', 'and', 'insulating', 'newtonian', 'liquids', 'from', 'that', 'prior', 'art', 'it', 'is', 'well', 'established', 'that', 'the', 'flow', 'electrification', 'in', 'newtonian', 'liquids', 'is', 'a', 'consequence', 'of', 'the', 'formation', 'of', 'an', 'ionic', 'double', 'layer', 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707.2646 | Electrical charging during the sharkskin instability of a metallocene
melt | Flow instabilities are widely studied because of their economical and
theoretical interest, however few results have been published about the polymer
electrification during the extrusion. Nevertheless the generation of the
electrical charges is characteristic of the interaction between the polymer
melt and the die walls. In our study, the capillary extrusion of a metallocene
polyethylene (mPE) through a tungsten carbide die is characterized through
accurate electrical measurements thanks a Faraday pail. No significant charges
are observed since the extrudate surface remains smooth. However, as soon as
the sharkskin distortion appears, measurable charges are collected (around 5
10-8 C/m2). Higher level of charges are measured during the spurt or the
gross-melt fracture (g.m.f) defects. This work is focused on the electrical
charging during the sharkskin instability. The variation of the electrical
charges versus the apparent wall shear stress is investigated for different die
geometries. This curve exhibits a linear increase, followed by a sudden growth
just before the onset of the spurt instability. This abrupt charging
corresponds also to the end of the sharkskin instability. It is also well-known
that wall slip appears just at the same time, with smaller velocity values than
during spurt flow. Our results indicate that electrification could be a
signature of the wall slip. We show also that the electrification curves can be
shifted according to the time-temperature superposition principle, leading to
the conclusion that molecular features of the polymer are also involved in this
process.
| cond-mat.soft | flow instabilities are widely studied because of their economical and theoretical interest however few results have been published about the polymer electrification during the extrusion nevertheless the generation of the electrical charges is characteristic of the interaction between the polymer melt and the die walls in our study the capillary extrusion of a metallocene polyethylene mpe through a tungsten carbide die is characterized through accurate electrical measurements thanks a faraday pail no significant charges are observed since the extrudate surface remains smooth however as soon as the sharkskin distortion appears measurable charges are collected around 5 108 cm2 higher level of charges are measured during the spurt or the grossmelt fracture gmf defects this work is focused on the electrical charging during the sharkskin instability the variation of the electrical charges versus the apparent wall shear stress is investigated for different die geometries this curve exhibits a linear increase followed by a sudden growth just before the onset of the spurt instability this abrupt charging corresponds also to the end of the sharkskin instability it is also wellknown that wall slip appears just at the same time with smaller velocity values than during spurt flow our results indicate that electrification could be a signature of the wall slip we show also that the electrification curves can be shifted according to the timetemperature superposition principle leading to the conclusion that molecular features of the polymer are also involved in this process | [['flow', 'instabilities', 'are', 'widely', 'studied', 'because', 'of', 'their', 'economical', 'and', 'theoretical', 'interest', 'however', 'few', 'results', 'have', 'been', 'published', 'about', 'the', 'polymer', 'electrification', 'during', 'the', 'extrusion', 'nevertheless', 'the', 'generation', 'of', 'the', 'electrical', 'charges', 'is', 'characteristic', 'of', 'the', 'interaction', 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0.14913598923677845, -0.2413573740593142, 0.13146456249230423, 0.009462664942765812] |
707.2647 | A new instability for finite Prandtl number rotating convection with
free-slip boundary conditions | Rolls in finite Prandtl number rotating convection with free-slip top and
bottom boundary conditions are shown to be unstable with respect to small angle
perturbations for any value of the rotation rate. This instability is driven by
the horizontal mean flow whose estimation requires a special singular
perturbation analysis.
| nlin.PS | rolls in finite prandtl number rotating convection with freeslip top and bottom boundary conditions are shown to be unstable with respect to small angle perturbations for any value of the rotation rate this instability is driven by the horizontal mean flow whose estimation requires a special singular perturbation analysis | [['rolls', 'in', 'finite', 'prandtl', 'number', 'rotating', 'convection', 'with', 'freeslip', 'top', 'and', 'bottom', 'boundary', 'conditions', 'are', 'shown', 'to', 'be', 'unstable', 'with', 'respect', 'to', 'small', 'angle', 'perturbations', 'for', 'any', 'value', 'of', 'the', 'rotation', 'rate', 'this', 'instability', 'is', 'driven', 'by', 'the', 'horizontal', 'mean', 'flow', 'whose', 'estimation', 'requires', 'a', 'special', 'singular', 'perturbation', 'analysis']] | [-0.22281602346005716, 0.2526758766486024, -0.05255542207053121, 0.0085306318586084, -0.09561514403499967, -0.14508900980522133, -0.01787907050266786, 0.2617413290225121, -0.2752079960452963, -0.26845367199251885, 0.1947256759716654, -0.22411461311810632, -0.04900129055794405, 0.17905634981865176, -0.0981218131563189, 0.12321080219912894, 0.10370560526391681, 0.05809929411934347, -0.042547906606401106, -0.17506572494891529, 0.34491221561115615, 0.019787045461790904, 0.2673838665252741, -0.017701698906662663, 0.0270272182794858, -0.09798817815525192, 0.01992596287698466, 0.06783772151613114, -0.17708249433840417, 0.0132171077729792, 0.18357690006384048, -0.04491638616487688, 0.28758429446998907, -0.4228991314540712, -0.2007037844242794, 0.07436655773496141, 0.14765227152205698, 0.1084872204810381, -0.029230271578334004, -0.22709763763776544, 0.1426754850343022, -0.09065772462826298, -0.2028430819758499, -0.03563318118852164, 0.040095138762678416, 0.015401598227647494, -0.36060991354894883, 0.11628045139796271, 0.03123010615152972, 0.1372000079373924, -0.07371793216930664, -0.08170147738134374, -0.15046062080987863, 0.07908851039424843, 0.16937201321410128, 0.05036824300459928, 0.1453953440852311, -0.13465490655935541, 0.04099285203431334, 0.36459139470790264, -0.1200730697993113, -0.3296345110450472, 0.15803065514001918, -0.1923650693224401, 0.001977723405449366, 0.19134625108503944, 0.18151891968992293, 0.15861436362587372, -0.03451517153987471, 0.039749660556518226, -0.04793296047077723, 0.1411670528171698, 0.1600254249226834, -0.11232616144175432, 0.24542120762753813, 0.1773113836486805, 0.13980200642491786, 0.12256709856636898, -0.12278399090472684, -0.14998094634894205, -0.32328759627036596, -0.06816917821308788, -0.09400037991605242, 0.0371780434685132, -0.12373918606584883, -0.2746349554906875, 0.32317591580201166, 0.08316782582551241, 0.20577241194301418, 0.023779979811943307, 0.31810424636517254, 0.15235643014691921, 0.06756189423708284, 0.18542695190871553, 0.2877742849594476, 0.24210168978636515, 0.10786260212106365, -0.25523801757098763, 0.052615506565008234, 0.10315304744171397] |
707.2648 | Quantum Isometry Groups: Examples and Computations | In this follow-up of the article: Quantum Group of Isometries in Classical
and Noncommutative Geometry(arXiv:0704.0041) by Goswami, where quantum isometry
group of a noncommutative manifold has been defined, we explicitly compute such
quantum groups for a number of classical as well as noncommutative manifolds
including the spheres and the tori. It is also proved that the quantum isometry
group of an isospectral deformation of a (classical or noncommutative) manifold
is a suitable deformation of the quantum isometry group of the original
(undeformed) manifold.
| math.QA math-ph math.MP | in this followup of the article quantum group of isometries in classical and noncommutative geometryarxiv07040041 by goswami where quantum isometry group of a noncommutative manifold has been defined we explicitly compute such quantum groups for a number of classical as well as noncommutative manifolds including the spheres and the tori it is also proved that the quantum isometry group of an isospectral deformation of a classical or noncommutative manifold is a suitable deformation of the quantum isometry group of the original undeformed manifold | [['in', 'this', 'followup', 'of', 'the', 'article', 'quantum', 'group', 'of', 'isometries', 'in', 'classical', 'and', 'noncommutative', 'geometryarxiv07040041', 'by', 'goswami', 'where', 'quantum', 'isometry', 'group', 'of', 'a', 'noncommutative', 'manifold', 'has', 'been', 'defined', 'we', 'explicitly', 'compute', 'such', 'quantum', 'groups', 'for', 'a', 'number', 'of', 'classical', 'as', 'well', 'as', 'noncommutative', 'manifolds', 'including', 'the', 'spheres', 'and', 'the', 'tori', 'it', 'is', 'also', 'proved', 'that', 'the', 'quantum', 'isometry', 'group', 'of', 'an', 'isospectral', 'deformation', 'of', 'a', 'classical', 'or', 'noncommutative', 'manifold', 'is', 'a', 'suitable', 'deformation', 'of', 'the', 'quantum', 'isometry', 'group', 'of', 'the', 'original', 'undeformed', 'manifold']] | [-0.15296619335507475, 0.12986377618299008, -0.10552229754138374, 0.05676098643353481, -0.0968202849475258, -0.14569623166377224, -0.041589436686325185, 0.33305124793110824, -0.2969883945089106, -0.2387865594951663, 0.15298185378409604, -0.24037648737430573, -0.19891321873178752, 0.180645775115231, -0.17364906798480306, 0.08753025658973833, 0.005830213069779481, 0.14934004562134603, -0.14585962623255555, -0.2598772673177669, 0.41749110799737094, 0.03207247002936173, 0.22584246334097371, -0.013483504889669215, 0.15526290149598315, 0.04955261587534418, 0.009495589978674926, 0.028188267802229015, -0.10700121099775638, 0.09532937620874359, 0.28167484395728426, 0.03259822587971008, 0.20549897449772533, -0.36769084414330927, -0.2310012960579337, 0.14410171197818183, 0.1340622614342265, 0.06641397261764945, -0.055052981649457315, -0.3502952112907135, 0.06142844979242399, -0.1833085883124845, -0.1361864365398793, -0.08607203191964001, 0.05750974151873734, -0.04693942348949793, -0.147800264800558, 0.02556447531117933, 0.11058368682208267, 0.09406548719171708, -0.03725614596339988, -0.002435899044318897, 0.0030280867812973334, 0.12109836642687186, 0.0016923870198519491, 0.0622602517733623, 0.1575456186390777, -0.059859535097507986, -0.15483358595307303, 0.43440208420520876, -0.0036111727879359953, -0.2540247617743728, 0.1005864813583108, -0.1357249538811696, -0.18365379202565768, 0.06332646256948753, 0.07841605529552553, 0.17103624557962688, -0.03968078487484557, 0.2608215821461139, -0.11400323089711913, 0.08431168542266256, 0.06400853380697166, 0.04300474631600082, 0.09290794421714253, 0.05501652988477428, 0.11054404166231795, 0.14530416244141212, 0.01565531099487732, -0.1483054780969169, -0.34959083095919796, -0.273365511195507, -0.18567496559741656, 0.22159012455334207, -0.13793954769363798, -0.2005414369476323, 0.3649414678717532, -0.019170345834359843, 0.1739565108607455, 0.04173157682710486, 0.19610002857246778, 0.034050842006009344, 0.06604466213853234, 0.031094481191802317, 0.21105411440906366, 0.25305351024641226, -0.05938038123180953, -0.1661983312153053, -0.12296902965299966, 0.187363359622839] |
707.2649 | Electrical charges and tribology of insulating materials | Electrical charges generation occurring during contact and friction of
insulating materials has been identified for a long time. However the
contribution of these electrical charges to the friction behaviour is usually
neglected in the energetical balances. Based on published results and on our
own experimental results on the ability of the dielectric materials to trap
charges, we show in this study that the interaction energy during friction
depends markedly on these trapped charges. Eventually, we propose the
complementary use of the "mirror " method and of surface forces measurements to
obtain a quantitative evaluation of this contribution. dielectric behaviour /
friction / triboelectrification / interfacial interactions / surface free
energy / space charge / surface forces
| physics.class-ph | electrical charges generation occurring during contact and friction of insulating materials has been identified for a long time however the contribution of these electrical charges to the friction behaviour is usually neglected in the energetical balances based on published results and on our own experimental results on the ability of the dielectric materials to trap charges we show in this study that the interaction energy during friction depends markedly on these trapped charges eventually we propose the complementary use of the mirror method and of surface forces measurements to obtain a quantitative evaluation of this contribution dielectric behaviour friction triboelectrification interfacial interactions surface free energy space charge surface forces | [['electrical', 'charges', 'generation', 'occurring', 'during', 'contact', 'and', 'friction', 'of', 'insulating', 'materials', 'has', 'been', 'identified', 'for', 'a', 'long', 'time', 'however', 'the', 'contribution', 'of', 'these', 'electrical', 'charges', 'to', 'the', 'friction', 'behaviour', 'is', 'usually', 'neglected', 'in', 'the', 'energetical', 'balances', 'based', 'on', 'published', 'results', 'and', 'on', 'our', 'own', 'experimental', 'results', 'on', 'the', 'ability', 'of', 'the', 'dielectric', 'materials', 'to', 'trap', 'charges', 'we', 'show', 'in', 'this', 'study', 'that', 'the', 'interaction', 'energy', 'during', 'friction', 'depends', 'markedly', 'on', 'these', 'trapped', 'charges', 'eventually', 'we', 'propose', 'the', 'complementary', 'use', 'of', 'the', 'mirror', 'method', 'and', 'of', 'surface', 'forces', 'measurements', 'to', 'obtain', 'a', 'quantitative', 'evaluation', 'of', 'this', 'contribution', 'dielectric', 'behaviour', 'friction', 'triboelectrification', 'interfacial', 'interactions', 'surface', 'free', 'energy', 'space', 'charge', 'surface', 'forces']] | [-0.15461440788957914, 0.1671286667227198, -0.10739215607637403, 0.000600543713684134, -0.055218554007897686, -0.10317076294076279, 0.05167208172363836, 0.37983603454237685, -0.23013733241091902, -0.3234078393952169, 0.017186152847022365, -0.31443095585724357, -0.1440542359289568, 0.19671107680801678, -0.036232571451873474, 0.02692388019037493, 0.028259975398856496, -0.0005363036340119641, -0.032304968785306594, -0.19948591295322146, 0.2936196388557143, 0.05246876034919822, 0.3014262372268996, 0.18161500920327978, 0.08782093139331139, 0.004947778132291289, 0.007255162266211226, 0.041436089403284374, -0.17126391640333768, 0.09974977656036889, 0.17697670911449442, -0.08145511529083714, 0.2084419951740003, -0.520397366033098, -0.21909618149554239, 0.035348844133454176, 0.08345572441258818, 0.11897886180908444, -0.09465720049220933, -0.24310262232950522, -0.019317733149531238, -0.1412181183097696, -0.10936972624494122, -0.09464903317665288, 0.03119858425167184, 0.047713463153015105, -0.21667063906105286, 0.1088738911988111, 0.05026218386093548, 0.04365136064247254, -0.16693348389272705, -0.11231811757310542, -0.05213056576284452, 0.1491189979896838, 0.1110609157049362, -0.0019448973930551918, 0.24177269042851915, -0.1440693524478157, -0.06238610325637487, 0.3547635445320005, -0.04525059352227307, -0.18686931129169027, 0.23738985411062358, -0.14925880042767717, -0.062049371993528044, 0.15013014695205545, 0.1968678643781726, 0.09357416550863808, -0.16100263595581055, 0.03967411389174965, 0.03617651015520096, 0.1624019231920669, 0.0534240314480635, 0.016309354356020142, 0.24826081806298242, 0.18259718427178237, 0.020234534277691753, 0.1454395316156704, -0.09203643441080638, -0.057637662789143555, -0.2813660831899818, -0.16975521943916422, -0.22707613027834017, 0.040168059883006944, -0.042530936021982574, -0.1712329396294481, 0.3867825805102774, 0.16774489441881205, 0.15324979307505926, 0.012756199575960636, 0.3060671750823497, 0.060742420335556595, 0.10573006139367545, 0.003946397846581739, 0.3161657412275843, 0.11626473722398417, 0.1260747927232483, -0.29519022360802927, 0.06510089547159749, 0.06330411056475287] |
707.265 | Iterated logarithm law for anticipating stochastic differential
equations | We prove a functional law of iterated logarithm for the following kind of
anticipating stochastic differential equations
$$\xi^u_t=X_0^u+\frac{1}{\sqrt{\log\log u}}\sum_{j=1}^k \int_0^{t}
A_j^u(\xi^u_s)\circ dW_{s}^j+ \int_0^{t} A_0^u(\xi^u_s)ds,$$ where $u>e$,
$W=\{(W_t^1,...,W_t^k), 0\le t\le 1\}$ is a standard $k$-dimensional Wiener
process, $A_0^u,A_1^u,..., A_k^u:\mathbb{R}^d\longrightarrow \mathbb{R}^d$ are
functions of class $\mathcal{C}^2$ with bounded partial derivatives up to order
2, $X_0^u$ is a random vector not necessarily adapted and the first integral is
a generalized Stratonovich integral .
| math.PR | we prove a functional law of iterated logarithm for the following kind of anticipating stochastic differential equations xiu_tx_0ufrac1sqrtloglog usum_j1k int_0t a_juxiu_scirc dw_sj int_0t a_0uxiu_sds where ue ww_t1w_tk 0le tle 1 is a standard kdimensional wiener process a_0ua_1u a_kumathbbrdlongrightarrow mathbbrd are functions of class mathcalc2 with bounded partial derivatives up to order 2 x_0u is a random vector not necessarily adapted and the first integral is a generalized stratonovich integral | [['we', 'prove', 'a', 'functional', 'law', 'of', 'iterated', 'logarithm', 'for', 'the', 'following', 'kind', 'of', 'anticipating', 'stochastic', 'differential', 'equations', 'xiu_tx_0ufrac1sqrtloglog', 'usum_j1k', 'int_0t', 'a_juxiu_scirc', 'dw_sj', 'int_0t', 'a_0uxiu_sds', 'where', 'ue', 'ww_t1w_tk', '0le', 'tle', '1', 'is', 'a', 'standard', 'kdimensional', 'wiener', 'process', 'a_0ua_1u', 'a_kumathbbrdlongrightarrow', 'mathbbrd', 'are', 'functions', 'of', 'class', 'mathcalc2', 'with', 'bounded', 'partial', 'derivatives', 'up', 'to', 'order', '2', 'x_0u', 'is', 'a', 'random', 'vector', 'not', 'necessarily', 'adapted', 'and', 'the', 'first', 'integral', 'is', 'a', 'generalized', 'stratonovich', 'integral']] | [-0.14685694378663283, 0.10094732621715205, -0.050597481826534035, 0.06861162816521307, -0.15922766184190013, -0.1502784029351639, -0.02035344202743202, 0.29544848509010724, -0.3621988337425912, -0.12796538552177733, 0.1406535957901754, -0.3368945597655705, -0.1549537193762963, 0.13998495979753675, -0.10599912126304308, 0.1236991501588863, -0.006918512979430742, 0.09653339560571142, -0.05827826449311659, -0.2505226480606638, 0.32957581271890735, -0.10502433927432007, 0.12356902991772675, -0.03146859202686636, 0.23346260537347588, 0.028153967324140498, -0.04778547239963148, -0.020815197897494815, -0.18185217041888688, 0.057332790212430915, 0.24854538029395654, 0.05001040606675517, 0.36081243410217956, -0.36601751642759706, -0.16392912988963185, 0.17842662293219663, 0.1339882909712481, -0.06720247447918185, 0.04193143355545634, -0.2734076758526021, 0.1614359030805406, -0.14071021983247312, -0.18296402398130443, -0.032091107082049375, 0.045904560957378784, 0.13078364804692444, -0.444355823290458, 0.09789288749338174, 0.13222230563215057, 0.014440435652819569, -0.050826154534750784, -0.13608422350199495, 0.025260159463362127, 0.0038015674112639466, -0.04130149890762204, 0.09815996273069597, 0.06969183041393513, -0.03680560027905663, -0.1441475631913445, 0.3314121344783267, -0.09897885961099298, -0.3035801706347065, 0.03699222810902312, -0.2088772998054008, -0.1685913179420912, 0.15367876570366445, 0.12117510699651769, 0.18247836003269424, -0.20330572042797432, 0.2070200311422699, 0.012869642016890108, 0.0966801357257073, 0.09687354674440671, -0.019067193289882826, 0.017496544631106444, 0.09414208175797688, 0.14587533200678768, 0.07876048160747426, -0.024584697193053902, -0.17070354739601007, -0.4293249090675448, -0.22027130173061227, -0.16801401334585714, 0.17752189207731434, -0.16992732830422924, -0.17416456857787782, 0.24903059613387116, 0.03381012592342545, 0.1386049866035092, 0.18067388689969896, 0.20054448359325283, 0.2725575353843389, -0.01356156994817687, 0.07210827984495974, 0.03543074432088703, 0.1446657381402176, 0.14556987850819944, -0.1151885877794693, 0.06831960634664312, 0.19546880972353153] |
707.2651 | A New Quadruply Lensed Quasar: SDSSJ125107.57+293540.5 | We report the discovery of a quadruply imaged quasar,
SDSSJ125107.57+293540.5, selected from the Sloan Digital Sky Survey. Follow-up
imaging reveals that the system consists of four blue point-like components in
a typical cusp lens geometry surrounding a central red galaxy. The source
redshift is 0.802 and the lens redshift is 0.410. The maximum image separation
between the lensed components is 1"79. While the image configuration is well
reproduced by standard mass models with reasonable parameter values, the flux
ratios predicted by these models differ from the observed ratios in all bands.
This is suggestive of small-scale structures in this lens, although the
definitive identification of the anomaly requires more accurate photometry and
astrometry.
| astro-ph | we report the discovery of a quadruply imaged quasar sdssj125107572935405 selected from the sloan digital sky survey followup imaging reveals that the system consists of four blue pointlike components in a typical cusp lens geometry surrounding a central red galaxy the source redshift is 0802 and the lens redshift is 0410 the maximum image separation between the lensed components is 179 while the image configuration is well reproduced by standard mass models with reasonable parameter values the flux ratios predicted by these models differ from the observed ratios in all bands this is suggestive of smallscale structures in this lens although the definitive identification of the anomaly requires more accurate photometry and astrometry | [['we', 'report', 'the', 'discovery', 'of', 'a', 'quadruply', 'imaged', 'quasar', 'sdssj125107572935405', 'selected', 'from', 'the', 'sloan', 'digital', 'sky', 'survey', 'followup', 'imaging', 'reveals', 'that', 'the', 'system', 'consists', 'of', 'four', 'blue', 'pointlike', 'components', 'in', 'a', 'typical', 'cusp', 'lens', 'geometry', 'surrounding', 'a', 'central', 'red', 'galaxy', 'the', 'source', 'redshift', 'is', '0802', 'and', 'the', 'lens', 'redshift', 'is', '0410', 'the', 'maximum', 'image', 'separation', 'between', 'the', 'lensed', 'components', 'is', '179', 'while', 'the', 'image', 'configuration', 'is', 'well', 'reproduced', 'by', 'standard', 'mass', 'models', 'with', 'reasonable', 'parameter', 'values', 'the', 'flux', 'ratios', 'predicted', 'by', 'these', 'models', 'differ', 'from', 'the', 'observed', 'ratios', 'in', 'all', 'bands', 'this', 'is', 'suggestive', 'of', 'smallscale', 'structures', 'in', 'this', 'lens', 'although', 'the', 'definitive', 'identification', 'of', 'the', 'anomaly', 'requires', 'more', 'accurate', 'photometry', 'and', 'astrometry']] | [-0.11162201877024407, 0.04582993940753762, -0.05271027550614755, 0.05159312342272772, -0.1125620671539634, -0.08180364187657167, 0.019335290535569323, 0.4134286455477455, -0.12522796693208096, -0.3745068136569379, 0.07228714754559665, -0.3220761275650667, -0.06254430582547295, 0.2021679595054593, -0.03469697577280125, -0.012503374747211637, 0.07496252360786977, -0.09450291628724829, -0.05281415512243776, -0.22118681257623912, 0.28768145391118843, 0.05430281972179988, 0.22806268727539905, -0.06168879164449338, 0.10378095866846186, -0.027881622532731853, -0.142016658459657, 0.010411270295402833, -0.10894574208974259, 0.04113338900164568, 0.2437132584193153, 0.13122026234798664, 0.174569387448303, -0.24943834879169507, -0.19572577212238684, 0.07315405926783569, 0.19083160488246773, 0.053846906352971145, -0.06080933247059355, -0.31413815430382136, 0.05790564709111225, -0.124505360578561, -0.14192438499802457, 0.07775771106389584, 0.017747824202940268, 0.03739593191702235, -0.19412306974741764, 0.17151907451417564, -8.489398481158008e-05, 0.1037400498171337, -0.110254763829289, -0.12224275367147389, -0.07329112317737392, 0.10905259917074415, -0.022029932199594832, 0.07951209526072489, 0.14708112271702184, -0.19138155787368305, -0.0286586802394595, 0.41680511146218385, -0.04457929371606691, -0.039792104408011904, 0.17233873594627117, -0.19680732199256973, -0.14932937273156963, 0.18463404804372527, 0.12644776015076786, 0.11157461207143829, -0.17433095192869327, 0.01534809637295049, -0.02166318380789432, 0.2774649091962991, 0.03788136796876123, 0.03350853980906062, 0.3472565240226686, 0.14033153129899542, 0.0392625253224261, 0.11316416983858549, -0.28057165251811966, -0.005402418946947104, -0.2553986798240138, -0.07536249134747257, -0.15736000059717167, 0.07029034492526469, -0.1374064863856412, -0.126591417614171, 0.3910910424726483, 0.11158306256818053, 0.23737852846014512, 0.03310660685903193, 0.34350453927930047, 0.06833353183797694, 0.1332725525675674, 0.023003762785395208, 0.36364914077733246, 0.13486068124932768, 0.08188410419097636, -0.17046123985866352, 0.029717130328728154, 0.009446680504229985] |
707.2652 | A high resolution spectral atlas of brown dwarfs | We present a UVES/VLT high resolution atlas of three L dwarfs and one T dwarf
system, spectral classes at which most of the objects are brown dwarfs. Our
atlas covers the optical region from H$\alpha$ up to the near infrared at 1
$\mu$m. We present spectral details of ultra-cool atmospheres at very high
resolution ($R \sim 33 000$) and compare the spectra to model calculations. Our
comparison shows that molecular features from VO and CaH, and atomic features
from Cs and Rb are reasonably well fit by current models. On the other hand,
features due to TiO, CrH, and water, and atomic Na and K reveal large
discrepancies between model calculations and our observations.
| astro-ph | we present a uvesvlt high resolution atlas of three l dwarfs and one t dwarf system spectral classes at which most of the objects are brown dwarfs our atlas covers the optical region from halpha up to the near infrared at 1 mum we present spectral details of ultracool atmospheres at very high resolution r sim 33 000 and compare the spectra to model calculations our comparison shows that molecular features from vo and cah and atomic features from cs and rb are reasonably well fit by current models on the other hand features due to tio crh and water and atomic na and k reveal large discrepancies between model calculations and our observations | [['we', 'present', 'a', 'uvesvlt', 'high', 'resolution', 'atlas', 'of', 'three', 'l', 'dwarfs', 'and', 'one', 't', 'dwarf', 'system', 'spectral', 'classes', 'at', 'which', 'most', 'of', 'the', 'objects', 'are', 'brown', 'dwarfs', 'our', 'atlas', 'covers', 'the', 'optical', 'region', 'from', 'halpha', 'up', 'to', 'the', 'near', 'infrared', 'at', '1', 'mum', 'we', 'present', 'spectral', 'details', 'of', 'ultracool', 'atmospheres', 'at', 'very', 'high', 'resolution', 'r', 'sim', '33', '000', 'and', 'compare', 'the', 'spectra', 'to', 'model', 'calculations', 'our', 'comparison', 'shows', 'that', 'molecular', 'features', 'from', 'vo', 'and', 'cah', 'and', 'atomic', 'features', 'from', 'cs', 'and', 'rb', 'are', 'reasonably', 'well', 'fit', 'by', 'current', 'models', 'on', 'the', 'other', 'hand', 'features', 'due', 'to', 'tio', 'crh', 'and', 'water', 'and', 'atomic', 'na', 'and', 'k', 'reveal', 'large', 'discrepancies', 'between', 'model', 'calculations', 'and', 'our', 'observations']] | [0.015142016439584264, 0.06975719305327195, -0.031058238222868295, 0.055853930424506724, -0.01542573019845836, -0.14549301297295625, 0.08326183470260155, 0.4281512637737027, -0.18393364822054936, -0.39737819082087333, 0.0552712953118444, -0.3584955942310524, -0.049425422524412475, 0.1766825731855964, -0.02373442362831587, -0.0141196085554711, 0.09178211020403787, -0.09969625473757715, -0.027109365115808158, -0.19787881613356467, 0.26766440956118076, 0.08474722035278223, 0.15454612961529116, 0.030705380841697518, 0.027540649168944935, -0.13577890303751797, -0.08478747378920384, -0.020437134225575023, -0.15217676590710702, 0.09045884408988059, 0.27519253475057076, 0.052500081301683134, 0.1542480363113052, -0.3330786154981245, -0.2046838380996824, -0.009605820094676394, 0.1322771769605185, 0.06390468454654247, 0.0019159049087759566, -0.2621617252211364, 0.11760847304902743, -0.12340641732474691, -0.09677905358553848, -0.058166399318316395, 0.03151476154667571, 0.04749621830957327, -0.25455101963394045, 0.04925139770248758, 0.002938552221422198, 0.19555484837933604, -0.12622300537278583, -0.21409076341456457, -0.05450078212705098, 0.08028425805560689, -0.05319021501897001, 0.025711325401636332, 0.14275487377961868, -0.12067760678269622, -0.027850852568486805, 0.39240512390735377, -0.17225288766795738, 0.0050847577421288745, 0.33126839355712656, -0.19935903932262017, -0.142104594900861, 0.17558258371591046, 0.085128647324286, 0.13668963035748324, -0.1112634338307799, 0.0507841828894973, -0.010771380012381104, 0.2328458867901773, 0.07053614999249316, 0.11299148071638979, 0.2780648732247452, 0.13065254973812362, -0.011032658045000414, 0.02439306144604639, -0.28380881857919393, -0.01802506144240237, -0.2585389048776083, -0.10640209841362216, -0.1423788985192547, 0.015964196725307328, -0.08841403471926337, -0.07690459941238116, 0.37159674319749075, 0.15143814866774177, 0.2775246193550788, 0.03797562097570973, 0.3058188914141634, 0.026722883943492842, 0.10183959897901666, 0.09834113791115223, 0.23233333742246032, 0.14642939323471582, 0.15164553604023367, -0.24339253732550628, -0.007022766523030505, -0.0013804750786604065] |
707.2653 | A Non-Archimedean Wave Equation | Let K be a non-Archimedean local field with the normalized absolute value
$|\cdot |$. It is shown that a ``plane wave'' $f(t+\omega_1 x_1+...
+\omega_nx_n)$, where f is a Bruhat-Schwartz complex-valued test function on K,
$(t,x_1,..., x_n)\in K^{n+1}$, $\max\limits_{1\le j\le n}|\omega_j|=1$,
satisfies, for any f, a certain homogeneous pseudo-differential equation, an
analog of the classical wave equation. A theory of the Cauchy problem for this
equation is developed.
| math.NT math.AP | let k be a nonarchimedean local field with the normalized absolute value cdot it is shown that a plane wave ftomega_1 x_1 omega_nx_n where f is a bruhatschwartz complexvalued test function on k tx_1 x_nin kn1 maxlimits_1le jle nomega_j1 satisfies for any f a certain homogeneous pseudodifferential equation an analog of the classical wave equation a theory of the cauchy problem for this equation is developed | [['let', 'k', 'be', 'a', 'nonarchimedean', 'local', 'field', 'with', 'the', 'normalized', 'absolute', 'value', 'cdot', 'it', 'is', 'shown', 'that', 'a', 'plane', 'wave', 'ftomega_1', 'x_1', 'omega_nx_n', 'where', 'f', 'is', 'a', 'bruhatschwartz', 'complexvalued', 'test', 'function', 'on', 'k', 'tx_1', 'x_nin', 'kn1', 'maxlimits_1le', 'jle', 'nomega_j1', 'satisfies', 'for', 'any', 'f', 'a', 'certain', 'homogeneous', 'pseudodifferential', 'equation', 'an', 'analog', 'of', 'the', 'classical', 'wave', 'equation', 'a', 'theory', 'of', 'the', 'cauchy', 'problem', 'for', 'this', 'equation', 'is', 'developed']] | [-0.24494747572280773, 0.08166411292541688, -0.11953704947697334, 0.017192442355616414, -0.10056165977549113, -0.13961219963938243, -0.05862184879026513, 0.25821068450106216, -0.31435137813086395, -0.16575324678885156, 0.06512964452181744, -0.3129403193282788, -0.13119693610389702, 0.19458262567393114, -0.008674238228284921, 0.04818664356821873, -0.011876997369967524, 0.15660601475688277, -0.10898407871957075, -0.23664782229108644, 0.31279000652511224, -0.08093049687134926, 0.1984641155624976, -0.019846768706243058, 0.1555386727187233, 0.03410649444663622, 0.1017412575969442, -0.01865300212482937, -0.20552373455408446, 0.02173225486796105, 0.27650717096250566, 0.10442887838990962, 0.3441254539934338, -0.3543038405172649, -0.21141252988857812, 0.22129519854779126, 0.11553894255890465, -0.048856827277751244, -0.0001949128393297557, -0.29090929107709984, 0.1445886646244736, -0.06829719925986329, -0.19490664325593438, 0.011198637930706877, 0.12036671375924507, 0.038872416024325326, -0.39757451320402937, 0.06075810749450179, 0.08758771249673283, 0.06032148334884741, -0.08477743208927453, -0.15387022793751026, 0.005128662911106328, -0.02444528741762042, -0.054526737261349795, 0.20766989160023752, 0.03415036436597832, -0.07247704537356364, -0.013622685625660614, 0.35485089747387855, -0.1168262084152122, -0.2874441274220399, 0.008851626452791398, -0.153691926345107, -0.061139225746031665, 0.11074320210113389, 0.09583709664551206, 0.20957128306637046, -0.11873786789594126, 0.23995136402425218, -0.1408047603102607, 0.16764683553521506, 0.08694353479830945, -0.05187496268114106, 0.12049072952635709, 0.0523428383176444, 0.13989237695932388, 0.1015940540466366, 0.015844708298081073, -0.012565063923353055, -0.378161789208162, -0.18419464367640312, -0.22041619750174893, 0.21377603033486922, -0.12725369528424543, -0.1842173355661111, 0.31309010879304566, 0.07851845702656438, 0.1513442678709102, 0.09304239871133058, 0.22181203520986095, 0.24597732788409854, -0.010398084694733386, 0.10222461575367411, 0.08124878514008443, 0.24595978451877465, 0.061792608907782154, -0.1742806657690738, 0.0050989135519647205, 0.14111496138645976] |
707.2654 | The measurement of the absolute branching ratio of the K+ to pi+ pi0
(gamma) decay at KLOE | The preliminary result on the absolute branching ratio of the decay K+ to pi+
pi0 (gamma), obtained by the KLOE experiment operating at the DAPHNE Frascati
Phi-Factory, is presented.
| hep-ex | the preliminary result on the absolute branching ratio of the decay k to pi pi0 gamma obtained by the kloe experiment operating at the daphne frascati phifactory is presented | [['the', 'preliminary', 'result', 'on', 'the', 'absolute', 'branching', 'ratio', 'of', 'the', 'decay', 'k', 'to', 'pi', 'pi0', 'gamma', 'obtained', 'by', 'the', 'kloe', 'experiment', 'operating', 'at', 'the', 'daphne', 'frascati', 'phifactory', 'is', 'presented']] | [-0.0895320804697333, 0.2151133251087419, -0.1605430387506454, -0.012466882174866724, -0.0018086373356395755, -0.140037489155757, 0.12118833544182367, 0.2585603558811648, -0.1443877141794254, -0.25771811281146223, -0.01295595438669211, -0.41234266558854743, 0.08484888784908529, 0.23846954852342606, 0.13504515504785652, 0.19188271071119556, 0.14283301141755333, 0.06299538396555802, 0.013788510065782687, -0.17950049081239208, 0.1845831665499457, 0.18928375249278956, 0.2697403142871014, 0.07511132377488859, 0.053408160934160495, 0.02661938305366142, -0.07212888357903936, -0.13914734401322645, -0.23013405848679871, 0.006019495652410491, 0.2848944091077509, 0.09408579514650948, 0.07251103055374376, -0.23543389599593678, 0.051854955353613556, 0.1297834738286148, 0.0468656357120851, -0.09795962678718156, -0.027104305894242536, -0.45471156516979483, 0.18554705696116233, -0.0819208337443656, -0.11118811987147763, 0.07276165421152937, 0.045258838330106486, -0.10513470164532292, -0.3123559407119093, -0.048245198494786846, -0.04574237314277682, 0.11535390350839188, 0.013380472323503988, -0.3757443674197742, 0.09120329949555211, 0.00762387448600654, 0.07134629130074434, 0.1453385792897436, 0.22523554414510727, -0.03636814286161599, -0.146491346174273, 0.33508823959734935, -0.1155451613895852, -0.07211863082544558, 0.12931173076403552, -0.27273885602259945, -0.10945236265402415, 0.24665515176181135, 0.2111897788428027, 0.0063943859061290475, -0.18197193645454687, 0.11828934131511326, -0.04362287910269766, 0.1479438692331314, 0.14634529318146663, -0.06213117981779164, 0.0860513337518506, 0.2538963327794496, -0.01886128380509286, 0.09490639228245308, -0.09295708534372008, 0.010482900824140886, -0.47980184878768595, -0.11703700418102331, -0.08768230779016198, 0.10863251129871812, -0.015768543142696906, 0.05739319324493408, 0.2946726867351039, -0.022983556677555216, 0.2753868705817851, 0.03075928309257945, 0.3269267236364299, 0.129879216470852, -0.013018056750297546, -0.013007726664815483, 0.3575873766094446, 0.1689060449616277, 0.19940018135219298, -0.3580915335854837, 0.056542914087787784, 0.0484226548177158] |
707.2655 | Measurement of the Decay B- --> D*0 e- nubar | Using 226 million $B\bar{B}$ events recorded on the $\Upsilon(4S)$ resonance
with the BABAR detector at the SLAC $e^+e^-$ storage rings PEPII, we
reconstruct $B^-\to D^{*0} e^-\bar\nu_e$ decays using the decay chain
$D^{*0}\to{}D^0{}\pi^0$ and $D^{0}\to{}K^-\pi^+$. From the dependence of their
differential rate on $w$, the product of the four-velocities of $B^-${} and
$D^{*0}$, and using the description of the form factor $F(w)$ by Caprini et
al., we obtain the preliminary results $\rho^2_{A_1} = 1.15\pm 0.06 \pm 0.08$,
$F(1)\cdot|V_{cb}| = (36.3\pm 0.6 \pm 1.4)\cdot 10^{-3}$, and ${\cal B}(B^-\to
D^{*0} e^-\bar\nu_e) = (5.71\pm 0.08\pm 0.41)%$. The first errors are
statistical and the second ones are systematic. \\
| hep-ex | using 226 million bbarb events recorded on the upsilon4s resonance with the babar detector at the slac ee storage rings pepii we reconstruct bto d0 ebarnu_e decays using the decay chain d0tod0pi0 and d0tokpi from the dependence of their differential rate on w the product of the fourvelocities of b and d0 and using the description of the form factor fw by caprini et al we obtain the preliminary results rho2_a_1 115pm 006 pm 008 f1cdotv_cb 363pm 06 pm 14cdot 103 and cal bbto d0 ebarnu_e 571pm 008pm 041 the first errors are statistical and the second ones are systematic | [['using', '226', 'million', 'bbarb', 'events', 'recorded', 'on', 'the', 'upsilon4s', 'resonance', 'with', 'the', 'babar', 'detector', 'at', 'the', 'slac', 'ee', 'storage', 'rings', 'pepii', 'we', 'reconstruct', 'bto', 'd0', 'ebarnu_e', 'decays', 'using', 'the', 'decay', 'chain', 'd0tod0pi0', 'and', 'd0tokpi', 'from', 'the', 'dependence', 'of', 'their', 'differential', 'rate', 'on', 'w', 'the', 'product', 'of', 'the', 'fourvelocities', 'of', 'b', 'and', 'd0', 'and', 'using', 'the', 'description', 'of', 'the', 'form', 'factor', 'fw', 'by', 'caprini', 'et', 'al', 'we', 'obtain', 'the', 'preliminary', 'results', 'rho2_a_1', '115pm', '006', 'pm', '008', 'f1cdotv_cb', '363pm', '06', 'pm', '14cdot', '103', 'and', 'cal', 'bbto', 'd0', 'ebarnu_e', '571pm', '008pm', '041', 'the', 'first', 'errors', 'are', 'statistical', 'and', 'the', 'second', 'ones', 'are', 'systematic']] | [-0.08505555926772054, 0.13825905357577628, -0.03526701109724179, 0.017641272776389636, -0.0044820273435243994, -0.08765417323898404, 0.08153091312601402, 0.259634099650367, -0.18743761207768192, -0.31606454394196953, 0.000741040256495277, -0.48169983238462477, 0.04281350327355246, 0.16327072874522738, 0.035660844726828476, 0.12091061124898574, 0.10439110300703956, -0.016770835690480726, -0.1042020899501519, -0.20173491817969147, 0.15585213790707772, 0.0556972747898951, 0.23115329773375584, 0.029516009954355098, 0.014797441457318122, -0.003403179142223571, -0.05622869639367025, -0.11362002081968771, -0.22971862560558703, 0.04456153909941154, 0.17465574505879114, 0.12684315344899572, 0.10539179771227301, -0.33785608136445605, 0.07403526057599373, 0.1428814294737994, 0.10607647560837288, 0.0058452002303574675, -0.016803492458977845, -0.4070118887610333, 0.19295329694706265, -0.21668225086935025, 0.008900617959067946, -0.004560778384417375, 0.05902351675334797, -0.08549276192582422, -0.3602001239064961, 0.16941245969495064, -0.07525622056451656, 0.12299464018614863, -0.01935805055382912, -0.26796215650455285, -0.028257233446203574, -0.029477983332609616, -0.0054413581527369, 0.12682969122123655, 0.19565592200485288, -0.01931001185890167, -0.1434790136077271, 0.32819972531769864, -0.08634540187295085, -0.08419430554313685, 0.1196269508869317, -0.24936722820344312, -0.09239728273623572, 0.18911728064619726, 0.21687091388289007, 0.057861642343723166, -0.19374360958294523, 0.13213164711518774, 0.00595119490378326, 0.1781566154027279, 0.12060735721181157, 0.059983138634663036, 0.12462227405499547, 0.1625218994675144, -0.05482334301116005, 0.04649267409132012, -0.16031120368279517, 0.003888743618498206, -0.3843224740497047, -0.10350966149119921, -0.07361521507783603, 0.11027066312449914, -0.04851877453448426, -0.01399375059797118, 0.35174011195989785, 0.020949417979013122, 0.35746350094315504, 0.012778500245223123, 0.23398657951764362, 0.08256464381702244, 0.012386423288418921, 0.10327872044346746, 0.29781248765967544, 0.19445898224880057, 0.12440008677226762, -0.2958425080897512, 0.019019680192834267, 0.00983244235256827] |
707.2656 | Nanosilica mops up host lipids and fights baculovirus: a B. mori model | Malaria and other parasites, including virus often induce an increase in host
lipids which the invaders use to their own advantage. We obtained encouraging
results in our investigations on bird malaria with a new approach namely the
use of nanosilica to mop up excess host lipids. While this project is
continuing we have investigated another, simpler system namely silkworms which
suffer from a deadly baculovirus, BmNPV. This virus decimates the infected
population within 24 hours or so and no known antibiotic antidote or
genetically resistant strain of silkworm3 exists. We report here a partial
success, which is worth following up. Our rationale, we believe, has a broad
and interdisciplinary appeal, for, this nanosilica treatment might be used
together with other arsenals on all sorts of virus which take advantage of
enhanced host lipids. It has not escaped our notice that Ebola and HIV also
belong to this category. Nanoparticles are being preferentially harnessed,
because they offer a greater surface area, circulate more easily and in
lepidopteran system4 they are removed within 24 hours from the body. Lawry
surmised, on cogent theoretical grounds that particles significantly smaller
than micron order would be less harmful in the hemocoele. Furthermore, Hui-peng
et al. pointed out that lipase treatment, the only viable option for
controlling BmNPV interferes in hormonal balance and cannot be applied to pre
molting stage.
| q-bio.BM q-bio.MN | malaria and other parasites including virus often induce an increase in host lipids which the invaders use to their own advantage we obtained encouraging results in our investigations on bird malaria with a new approach namely the use of nanosilica to mop up excess host lipids while this project is continuing we have investigated another simpler system namely silkworms which suffer from a deadly baculovirus bmnpv this virus decimates the infected population within 24 hours or so and no known antibiotic antidote or genetically resistant strain of silkworm3 exists we report here a partial success which is worth following up our rationale we believe has a broad and interdisciplinary appeal for this nanosilica treatment might be used together with other arsenals on all sorts of virus which take advantage of enhanced host lipids it has not escaped our notice that ebola and hiv also belong to this category nanoparticles are being preferentially harnessed because they offer a greater surface area circulate more easily and in lepidopteran system4 they are removed within 24 hours from the body lawry surmised on cogent theoretical grounds that particles significantly smaller than micron order would be less harmful in the hemocoele furthermore huipeng et al pointed out that lipase treatment the only viable option for controlling bmnpv interferes in hormonal balance and cannot be applied to pre molting stage | [['malaria', 'and', 'other', 'parasites', 'including', 'virus', 'often', 'induce', 'an', 'increase', 'in', 'host', 'lipids', 'which', 'the', 'invaders', 'use', 'to', 'their', 'own', 'advantage', 'we', 'obtained', 'encouraging', 'results', 'in', 'our', 'investigations', 'on', 'bird', 'malaria', 'with', 'a', 'new', 'approach', 'namely', 'the', 'use', 'of', 'nanosilica', 'to', 'mop', 'up', 'excess', 'host', 'lipids', 'while', 'this', 'project', 'is', 'continuing', 'we', 'have', 'investigated', 'another', 'simpler', 'system', 'namely', 'silkworms', 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707.2657 | HE 0557-4840 - Ultra-Metal-Poor and Carbon-Rich | We report the discovery and high-resolution, high S/N, spectroscopic analysis
of the ultra-metal-poor red giant HE 0557-4840, which is the third most
heavy-element deficient star currently known. Its atmospheric parameters are
T_eff = 4900 K, log g = 2.2, and [Fe/H]= -4.75. This brings the number of stars
with [Fe/H] < -4.0 to three, and the discovery of HE 0557-4840 suggests that
the metallicity distribution function of the Galactic halo does not have a
"gap" between [Fe/H] = -4.0, where several stars are known, and the two most
metal-poor stars, at [Fe/H] ~ -5.3. HE 0557-4840 is carbon rich - [C/Fe] = +1.6
- a property shared by all three objects with [Fe/H] < -4.0, suggesting that
the well-known increase of carbon relative to iron with decreasing [Fe/H]
reaches its logical conclusion - ubiquitous carbon richness - at lowest
abundance. We also present abundances (nine) and limits (nine) for a further 18
elements. For species having well-measured abundances or strong upper limits,
HE 0557-4840 is "normal" in comparison with the bulk of the stellar population
at [Fe/H] ~ -4.0 - with the possible exception of Co. We discuss the
implications of these results for chemical enrichment at the earliest times, in
the context of single ("mixing and fallback") and two-component enrichment
models. While neither offers a clear solution, the latter appears closer to the
mark. Further data are required to determine the oxygen abundance and improve
that of Co, and hence more strongly constrain the origin of this object.
| astro-ph | we report the discovery and highresolution high sn spectroscopic analysis of the ultrametalpoor red giant he 05574840 which is the third most heavyelement deficient star currently known its atmospheric parameters are t_eff 4900 k log g 22 and feh 475 this brings the number of stars with feh 40 to three and the discovery of he 05574840 suggests that the metallicity distribution function of the galactic halo does not have a gap between feh 40 where several stars are known and the two most metalpoor stars at feh 53 he 05574840 is carbon rich cfe 16 a property shared by all three objects with feh 40 suggesting that the wellknown increase of carbon relative to iron with decreasing feh reaches its logical conclusion ubiquitous carbon richness at lowest abundance we also present abundances nine and limits nine for a further 18 elements for species having wellmeasured abundances or strong upper limits he 05574840 is normal in comparison with the bulk of the stellar population at feh 40 with the possible exception of co we discuss the implications of these results for chemical enrichment at the earliest times in the context of single mixing and fallback and twocomponent enrichment models while neither offers a clear solution the latter appears closer to the mark further data are required to determine the oxygen abundance and improve that of co and hence more strongly constrain the origin of this object | [['we', 'report', 'the', 'discovery', 'and', 'highresolution', 'high', 'sn', 'spectroscopic', 'analysis', 'of', 'the', 'ultrametalpoor', 'red', 'giant', 'he', '05574840', 'which', 'is', 'the', 'third', 'most', 'heavyelement', 'deficient', 'star', 'currently', 'known', 'its', 'atmospheric', 'parameters', 'are', 't_eff', '4900', 'k', 'log', 'g', '22', 'and', 'feh', '475', 'this', 'brings', 'the', 'number', 'of', 'stars', 'with', 'feh', '40', 'to', 'three', 'and', 'the', 'discovery', 'of', 'he', '05574840', 'suggests', 'that', 'the', 'metallicity', 'distribution', 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707.2658 | Nanosilica mop up host lipids and fights baculovirus | Various types of surface functionalized nanosilica (50-60 nm size with 3-10
nm inner pore size range) have been used to kill insect pests by sucking up
cuticular lipids and breaking the water barrier. We have also utilized
nanosilica for mopping up host lipids induced by the malarial parasite, P.
gallinaceum in poultry birds; VLDL cholesterol and serum triglycerides are
brought back to the normal level with a concomitant check in parasite growth.
While this work continues, we have explored another more convenient system,
silkworm (Bombyx mori) that is frequently decimated by a baculovirus, NPV for
which no antidote is known so far. Here, too, viral infection enhances host
lipids. Eight different types of nanosilica were injected in the virus infected
silkworm (batches of 10 worms) after ensuring 100% survival up to cocoon
formation in control larvae (injected with the same volume of ethanol, the
medium of nanosilica). Of these 8, AL60102 and AL60106, have the most marked
effect on infected silkworm, both as prophylactic and pharmaceutical agents.
Normal larvae injected with these nanosilica survive up to cocoon formation.
| q-bio.BM q-bio.MN | various types of surface functionalized nanosilica 5060 nm size with 310 nm inner pore size range have been used to kill insect pests by sucking up cuticular lipids and breaking the water barrier we have also utilized nanosilica for mopping up host lipids induced by the malarial parasite p gallinaceum in poultry birds vldl cholesterol and serum triglycerides are brought back to the normal level with a concomitant check in parasite growth while this work continues we have explored another more convenient system silkworm bombyx mori that is frequently decimated by a baculovirus npv for which no antidote is known so far here too viral infection enhances host lipids eight different types of nanosilica were injected in the virus infected silkworm batches of 10 worms after ensuring 100 survival up to cocoon formation in control larvae injected with the same volume of ethanol the medium of nanosilica of these 8 al60102 and al60106 have the most marked effect on infected silkworm both as prophylactic and pharmaceutical agents normal larvae injected with these nanosilica survive up to cocoon formation | [['various', 'types', 'of', 'surface', 'functionalized', 'nanosilica', '5060', 'nm', 'size', 'with', '310', 'nm', 'inner', 'pore', 'size', 'range', 'have', 'been', 'used', 'to', 'kill', 'insect', 'pests', 'by', 'sucking', 'up', 'cuticular', 'lipids', 'and', 'breaking', 'the', 'water', 'barrier', 'we', 'have', 'also', 'utilized', 'nanosilica', 'for', 'mopping', 'up', 'host', 'lipids', 'induced', 'by', 'the', 'malarial', 'parasite', 'p', 'gallinaceum', 'in', 'poultry', 'birds', 'vldl', 'cholesterol', 'and', 'serum', 'triglycerides', 'are', 'brought', 'back', 'to', 'the', 'normal', 'level', 'with', 'a', 'concomitant', 'check', 'in', 'parasite', 'growth', 'while', 'this', 'work', 'continues', 'we', 'have', 'explored', 'another', 'more', 'convenient', 'system', 'silkworm', 'bombyx', 'mori', 'that', 'is', 'frequently', 'decimated', 'by', 'a', 'baculovirus', 'npv', 'for', 'which', 'no', 'antidote', 'is', 'known', 'so', 'far', 'here', 'too', 'viral', 'infection', 'enhances', 'host', 'lipids', 'eight', 'different', 'types', 'of', 'nanosilica', 'were', 'injected', 'in', 'the', 'virus', 'infected', 'silkworm', 'batches', 'of', '10', 'worms', 'after', 'ensuring', '100', 'survival', 'up', 'to', 'cocoon', 'formation', 'in', 'control', 'larvae', 'injected', 'with', 'the', 'same', 'volume', 'of', 'ethanol', 'the', 'medium', 'of', 'nanosilica', 'of', 'these', '8', 'al60102', 'and', 'al60106', 'have', 'the', 'most', 'marked', 'effect', 'on', 'infected', 'silkworm', 'both', 'as', 'prophylactic', 'and', 'pharmaceutical', 'agents', 'normal', 'larvae', 'injected', 'with', 'these', 'nanosilica', 'survive', 'up', 'to', 'cocoon', 'formation']] | [-0.04757690786268304, 0.22283880155522787, -0.006691114861764434, 0.026641823543838598, 0.0025963598237819753, -0.17453317764629692, 0.08492229778502632, 0.3934730096327173, -0.2169385367171365, -0.31225633968283206, 0.07570127325638526, -0.3105295020737012, -0.11495021949764449, 0.13087071595589678, -0.08788955036881838, -0.020632569986998476, 0.005552485986273585, -0.026591923321338876, 0.08546450123530032, -0.2935793525996925, 0.18999567614852134, 0.024683506237450623, 0.256505229747908, 0.07732526137731764, 0.08526779405202049, -0.04581982751559961, 0.03323955990029553, -0.006050330518093498, -0.16523947169072423, 0.05868807700772183, 0.24577671077877628, 0.07047145087621848, 0.30631288406950546, -0.47706966513412535, -0.21798488185498754, 0.10569008946690622, 0.17696922407970048, 0.10645805626658109, -0.04576396920849136, -0.26629336312617785, 0.10772803178086683, -0.20194861472239772, -0.13577221345352924, 0.01022586031585415, 0.04758327330241917, 0.04888111874972594, -0.16576957983783086, 0.10882367330789701, -0.010856143909511883, 0.11684396320340261, -0.06371075324337348, -0.12823990210984978, -0.13856120557575405, 0.1574549226176446, 0.07924122508410687, -0.0013391101317994317, 0.2731310293139658, -0.11148587337559132, -0.04534738222765433, 0.3307726180148607, -0.013292086192923517, -0.09336293187608802, 0.22741014255625278, -0.14922719728369857, -0.08838061392145781, 0.24169587100602988, 0.16173634785994606, 0.07900336220673072, -0.17134306831231524, -0.03246057262466521, 0.008967113560011793, 0.1461899989241508, 0.1975477539363581, -0.04778050141734733, 0.18052152888257209, 0.22077285411708444, 0.007354738454555156, 0.11304866059278165, -0.10266410860480643, -0.03199440032052619, -0.13934538814352254, -0.170359885885321, -0.0772412187349848, 0.056645469400881, -0.07221268138389313, -0.12934180844919702, 0.3492514275881123, 0.07350724900808896, 0.14525079234931187, 0.04573660795078909, 0.2066317495749994, -0.050044611767284315, 0.14647264457227005, 0.0403476626399603, 0.18604638273397062, 0.08360506454751843, 0.10092952908178242, -0.22388618004459865, 0.1863594643443263, -0.0437214374178859] |
707.2659 | Control of rodent sleeping sickness disease by surface functionalized
amorphous nanosilica | Wild animals, pets, zoo animals and mammals of veterinary importance heavily
suffer from trypanosomiasis. Drugs with serious side effects are currently
mainstay of therapies used by veterinarians. Trypanosomiasis is caused by
Trypanosoma sp. leading to sleeping sickness in humans. Surface modified
(hydrophobic and lipophilic) amorphous nanoporous silica molecules could be
effectively used as therapeutic drug for combating trypanosomiasis. The
amorphous nanosilica was developed by top-down approach using volcanic soil
derived silica (Advasan; 50- 60 nm size with 3-10 nm inner pore size range) and
diatomaceous earth (FS; 60-80 nm size with 3-5 nm inner pore size range) as
source materials. According to WHO and USDA standards amorphous silica has long
been used as feed additives for several veterinary industries and considered to
be safe for human consumption. The basic mechanism of action of these
nanosilica molecules is mediated by the physical absorption of HDL components
in the lipophilic nanopores of nanosilica. This reduces the supply of the host
derived cholesterol, thus limiting the growth of the Trypanosoma sp. in vivo.
| q-bio.MN q-bio.BM | wild animals pets zoo animals and mammals of veterinary importance heavily suffer from trypanosomiasis drugs with serious side effects are currently mainstay of therapies used by veterinarians trypanosomiasis is caused by trypanosoma sp leading to sleeping sickness in humans surface modified hydrophobic and lipophilic amorphous nanoporous silica molecules could be effectively used as therapeutic drug for combating trypanosomiasis the amorphous nanosilica was developed by topdown approach using volcanic soil derived silica advasan 50 60 nm size with 310 nm inner pore size range and diatomaceous earth fs 6080 nm size with 35 nm inner pore size range as source materials according to who and usda standards amorphous silica has long been used as feed additives for several veterinary industries and considered to be safe for human consumption the basic mechanism of action of these nanosilica molecules is mediated by the physical absorption of hdl components in the lipophilic nanopores of nanosilica this reduces the supply of the host derived cholesterol thus limiting the growth of the trypanosoma sp in vivo | [['wild', 'animals', 'pets', 'zoo', 'animals', 'and', 'mammals', 'of', 'veterinary', 'importance', 'heavily', 'suffer', 'from', 'trypanosomiasis', 'drugs', 'with', 'serious', 'side', 'effects', 'are', 'currently', 'mainstay', 'of', 'therapies', 'used', 'by', 'veterinarians', 'trypanosomiasis', 'is', 'caused', 'by', 'trypanosoma', 'sp', 'leading', 'to', 'sleeping', 'sickness', 'in', 'humans', 'surface', 'modified', 'hydrophobic', 'and', 'lipophilic', 'amorphous', 'nanoporous', 'silica', 'molecules', 'could', 'be', 'effectively', 'used', 'as', 'therapeutic', 'drug', 'for', 'combating', 'trypanosomiasis', 'the', 'amorphous', 'nanosilica', 'was', 'developed', 'by', 'topdown', 'approach', 'using', 'volcanic', 'soil', 'derived', 'silica', 'advasan', '50', '60', 'nm', 'size', 'with', '310', 'nm', 'inner', 'pore', 'size', 'range', 'and', 'diatomaceous', 'earth', 'fs', '6080', 'nm', 'size', 'with', '35', 'nm', 'inner', 'pore', 'size', 'range', 'as', 'source', 'materials', 'according', 'to', 'who', 'and', 'usda', 'standards', 'amorphous', 'silica', 'has', 'long', 'been', 'used', 'as', 'feed', 'additives', 'for', 'several', 'veterinary', 'industries', 'and', 'considered', 'to', 'be', 'safe', 'for', 'human', 'consumption', 'the', 'basic', 'mechanism', 'of', 'action', 'of', 'these', 'nanosilica', 'molecules', 'is', 'mediated', 'by', 'the', 'physical', 'absorption', 'of', 'hdl', 'components', 'in', 'the', 'lipophilic', 'nanopores', 'of', 'nanosilica', 'this', 'reduces', 'the', 'supply', 'of', 'the', 'host', 'derived', 'cholesterol', 'thus', 'limiting', 'the', 'growth', 'of', 'the', 'trypanosoma', 'sp', 'in', 'vivo']] | [0.014295810799618872, 0.21226540208140032, -0.006306239775204588, 0.01461812546351991, -0.02140295615841058, -0.18363336873395988, 0.036027221205932575, 0.4043708892644472, -0.20952982976589174, -0.32195768939397695, 0.1004890753320069, -0.2832536709250971, -0.14703133335847052, 0.16230289391006364, -0.14537503308660926, 0.042122798517257684, 0.009513250056659758, -0.0816414491793174, 0.10703439573713001, -0.2208597375207492, 0.16625592671334743, 0.0804638968187473, 0.2975878164149998, 0.1212833540963142, 0.06523782553129076, -0.038677147162767746, 0.03984084559903879, -0.03330878289372257, -0.13975059205300308, 0.14900651817498284, 0.331726783280915, 0.06287025066142503, 0.2819009421641351, -0.4933842031653815, -0.2683950027428745, 0.038367040905757765, 0.12923151479446374, 0.0659998264473827, -0.03371549127457131, -0.2781094265547359, 0.09064273244889808, -0.18976635013019577, -0.11564961445817191, 0.018120151104605093, 0.06218907259920213, 0.03925256187080993, -0.20534223916391575, 0.08920663106463118, -0.008610643913492649, 0.15630380771056349, -0.08338224860961505, -0.2034711271518886, -0.08294850293618981, 0.16310901383292817, 0.07068180193060211, -0.016986651296195174, 0.3343594486692122, -0.12581191406934522, -0.06105882949872293, 0.397219852763339, -0.02010319121958067, -0.07233644993088785, 0.222020497517882, -0.06090289326883586, -0.013919071180723785, 0.21684301992146565, 0.16988685597399517, 0.08770666553582054, -0.19537015419752737, -0.016615952677273612, 0.03012607409497529, 0.21259858913808352, 0.19310994732603876, -0.0025007048943301753, 0.19752437380209034, 0.24606874915549443, -0.04188186984542665, 0.13269529866270854, -0.1332677674030752, -0.03285896677906359, -0.11456520353593598, -0.16315420124062388, -0.11292102504687916, 0.03768569767791113, -0.1036143346263998, -0.14313272615323686, 0.29019984982663855, 0.09045788028743118, 0.07791762033178072, 0.013803078183194711, 0.2310591464102756, -0.06632321347257987, 0.1748269814977123, -0.014931403045054702, 0.20749713379856466, 0.07826245065440335, 0.12576487010006704, -0.22921894816404564, 0.1710879027488686, -0.005522525951077807] |
707.266 | A third-order dispersive flow for closed curves into K\"ahler manifolds | This paper is devoted to studying the initial value problem for a third-order
dispersive equation for closed curves into K\"ahler manifolds. This equation is
a geometric generalization of a two-sphere valued system modeling the motion of
vortex filament. We prove the local existence theorem by using geometric
analysis and classical energy method.
| math.AP | this paper is devoted to studying the initial value problem for a thirdorder dispersive equation for closed curves into kahler manifolds this equation is a geometric generalization of a twosphere valued system modeling the motion of vortex filament we prove the local existence theorem by using geometric analysis and classical energy method | [['this', 'paper', 'is', 'devoted', 'to', 'studying', 'the', 'initial', 'value', 'problem', 'for', 'a', 'thirdorder', 'dispersive', 'equation', 'for', 'closed', 'curves', 'into', 'kahler', 'manifolds', 'this', 'equation', 'is', 'a', 'geometric', 'generalization', 'of', 'a', 'twosphere', 'valued', 'system', 'modeling', 'the', 'motion', 'of', 'vortex', 'filament', 'we', 'prove', 'the', 'local', 'existence', 'theorem', 'by', 'using', 'geometric', 'analysis', 'and', 'classical', 'energy', 'method']] | [-0.18503593760900772, 0.005995725738242841, -0.15355094016278878, 0.08648692876494561, -0.13311453360634354, -0.11235106087182291, -0.02101889223782704, 0.29323160021494216, -0.28504598420113325, -0.23691914635352218, 0.08490394459043343, -0.21887558025236314, -0.1762832489419872, 0.22229130003744593, -0.08989865223590571, 0.07930421497887717, 0.10313129025654724, 0.02707351634475904, -0.07975577249621543, -0.20257490909156892, 0.4013271731181213, -0.04225246192744145, 0.25076492472838324, 0.05795329519493792, 0.17830926461969143, 0.03662781863330075, 0.0020946602408702555, 0.03761074168141931, -0.19778956960474786, 0.14976881576764683, 0.19791856496326196, 0.02452327051791004, 0.2790203348446924, -0.38219406147702384, -0.2366494803259579, 0.15998121200559232, 0.12091199896083428, 0.10611596787706591, -0.025968914540778945, -0.31666127764261687, 0.0731737187687451, -0.07273718950678952, -0.24461572632515946, -0.0840021998872264, 0.026439978024707392, 0.0011974895964018428, -0.22153572318627715, 0.11228370494567431, 0.12807087709482473, 0.05186027840206337, -0.15473892700930053, -0.028960182409858905, -0.0005256576248659537, 0.026271587748152133, 0.020436474937014282, 0.052741886380737506, 0.0891509051882447, -0.09194310274996007, -0.06475321615401369, 0.37507793966394204, -0.07439858184751266, -0.26934404435227266, 0.04445177424125946, -0.06887122423638804, -0.14552310650021985, 0.16087302486770427, 0.15397170884534717, 0.16269355933540142, -0.17077690696057218, 0.11891593437422461, -0.09264845152098972, 0.104121721860093, 0.07914974784048703, -0.017502517063313953, 0.17973704836689508, 0.18612931496821916, 0.11627170774870767, 0.18468230217919113, -0.021741824296231452, -0.13696701437808, -0.3405511172201771, -0.19081132858767746, -0.14993785515141028, 0.14765131412870966, -0.0901928776245488, -0.1897988177012079, 0.41002221634754765, 0.04735134731275208, 0.15445247243657761, 0.08420882250692767, 0.30671582696959376, 0.16269551325016296, -0.04105497302953154, 0.05228704038577584, 0.18810868299064729, 0.24361085566208482, 0.1381024865863415, -0.19748119044771345, -0.05885142553597689, 0.22393656600839817] |
707.2661 | Experimental analysis of the Strato-rotational Instability in a
cylindrical Couette flow | This study is devoted to the experimental analysis of the Strato-rotational
Instability (SRI). This instability affects the classical cylindrical Couette
flow when the fluid is stably stratified in the axial direction. In agreement
with recent theoretical and numerical analyses, we describe for the first time
in detail the destabilization of the stratified flow below the Rayleigh line
(i.e. the stability threshold without stratification). We confirm that the
unstable modes of the SRI are non axisymmetric, oscillatory, and take place as
soon as the azimuthal linear velocity decreases along the radial direction.
This new instability is relevant for accretion disks.
| astro-ph | this study is devoted to the experimental analysis of the stratorotational instability sri this instability affects the classical cylindrical couette flow when the fluid is stably stratified in the axial direction in agreement with recent theoretical and numerical analyses we describe for the first time in detail the destabilization of the stratified flow below the rayleigh line ie the stability threshold without stratification we confirm that the unstable modes of the sri are non axisymmetric oscillatory and take place as soon as the azimuthal linear velocity decreases along the radial direction this new instability is relevant for accretion disks | [['this', 'study', 'is', 'devoted', 'to', 'the', 'experimental', 'analysis', 'of', 'the', 'stratorotational', 'instability', 'sri', 'this', 'instability', 'affects', 'the', 'classical', 'cylindrical', 'couette', 'flow', 'when', 'the', 'fluid', 'is', 'stably', 'stratified', 'in', 'the', 'axial', 'direction', 'in', 'agreement', 'with', 'recent', 'theoretical', 'and', 'numerical', 'analyses', 'we', 'describe', 'for', 'the', 'first', 'time', 'in', 'detail', 'the', 'destabilization', 'of', 'the', 'stratified', 'flow', 'below', 'the', 'rayleigh', 'line', 'ie', 'the', 'stability', 'threshold', 'without', 'stratification', 'we', 'confirm', 'that', 'the', 'unstable', 'modes', 'of', 'the', 'sri', 'are', 'non', 'axisymmetric', 'oscillatory', 'and', 'take', 'place', 'as', 'soon', 'as', 'the', 'azimuthal', 'linear', 'velocity', 'decreases', 'along', 'the', 'radial', 'direction', 'this', 'new', 'instability', 'is', 'relevant', 'for', 'accretion', 'disks']] | [-0.18010473329893717, 0.16123693557503171, -0.06883661814899457, 0.049727181668835455, -0.067123118223566, -0.0531936308670074, -0.03406256375213464, 0.31133760257878085, -0.27144765633751045, -0.20741681572087486, 0.12916564654248455, -0.22559026882494565, -0.10058695411678836, 0.19369250870864801, -0.0214788085496467, 0.062037314890385276, 0.07164600329247839, -0.009093740230633153, -0.023886478569527917, -0.16684506048279052, 0.32043765630159116, 0.09701407327954045, 0.29920955258186416, 0.0052730771001531845, -0.007909027042897475, -0.03502594263791436, -0.04071774575483016, 0.06003007669980177, -0.24284560023843738, 0.014504713330869421, 0.21522260268190593, 0.032446162958601206, 0.2599684126214171, -0.4412623092607416, -0.22491111332136723, 0.034667083034009644, 0.1939061247517891, 0.13725143610829055, -0.022448865533629996, -0.21067042376450967, 0.10808845255712066, -0.13634533777061586, -0.1979188523866763, -0.038195980049556856, 0.030307632221868545, 0.048976639617290915, -0.24695166444048436, 0.1437371737662364, 0.1309084442321851, 0.12889368935591644, -0.12240844493205047, -0.04969665532913459, -0.09224881668753847, 0.08013069901922294, 0.14058569408341715, 0.031118445794540223, 0.1323339383569405, -0.12242489038364529, -0.015961166922793243, 0.3775119390150513, -0.07505079458768696, -0.18876236925052123, 0.1843449069337562, -0.18347184404711983, -0.06942646893333983, 0.1661788456029061, 0.2065795020698899, 0.11970540356229652, -0.005968055093568053, 0.024001436826603658, -0.08862832285971804, 0.12463422301883875, 0.10477621517040664, -0.08522294388416357, 0.22569188578148383, 0.17137183824488234, 0.0661678883268244, 0.1618908638266301, -0.12430172020362483, -0.12860952981869983, -0.33370167963357283, -0.15509825861057963, -0.05865036235943512, -0.012591316503463219, -0.057557285817121294, -0.1676127053515026, 0.3810633728656955, 0.1077255418993335, 0.19732355727165035, -0.006016212365016191, 0.36084043305141456, 0.09886900005589305, 0.0017452400196531807, 0.11539502850630218, 0.3721166214237761, 0.18001430837268179, 0.1683389974447588, -0.2731017633435326, 0.06472128511740441, 0.04823437485034869] |
707.2662 | On the S_n-equivariant Euler characteristic of M_{2,n} | The Getzler's formula relates the S_n-equivariant Hodge-Deligne polynomial of
the space of ordered tuples of distinct points on a given variety X with the
Hodge-Deligne polynomial of X. We obtain the analogue of this formula for the
case when X has a nontrivial automorphism group. Collecting together all strata
of $\mathcal{M}_2$ with different automorphism groups, we derive a formula for
the S_n-equivariant Euler characteristic of $\mathcal{M}_{2,n}$.
| math.AG | the getzlers formula relates the s_nequivariant hodgedeligne polynomial of the space of ordered tuples of distinct points on a given variety x with the hodgedeligne polynomial of x we obtain the analogue of this formula for the case when x has a nontrivial automorphism group collecting together all strata of mathcalm_2 with different automorphism groups we derive a formula for the s_nequivariant euler characteristic of mathcalm_2n | [['the', 'getzlers', 'formula', 'relates', 'the', 's_nequivariant', 'hodgedeligne', 'polynomial', 'of', 'the', 'space', 'of', 'ordered', 'tuples', 'of', 'distinct', 'points', 'on', 'a', 'given', 'variety', 'x', 'with', 'the', 'hodgedeligne', 'polynomial', 'of', 'x', 'we', 'obtain', 'the', 'analogue', 'of', 'this', 'formula', 'for', 'the', 'case', 'when', 'x', 'has', 'a', 'nontrivial', 'automorphism', 'group', 'collecting', 'together', 'all', 'strata', 'of', 'mathcalm_2', 'with', 'different', 'automorphism', 'groups', 'we', 'derive', 'a', 'formula', 'for', 'the', 's_nequivariant', 'euler', 'characteristic', 'of', 'mathcalm_2n']] | [-0.23652703054249286, 0.05818156455285274, -0.13064097019915397, 0.03705733723651904, -0.07941701451603037, -0.10724839941383554, 0.03887439721192305, 0.27668337982434493, -0.30930565033609475, -0.23442669241474226, 0.08309337286135325, -0.2523234499869152, -0.13209486822955885, 0.23919338825015493, -0.09245048231230332, -0.017303090044655477, -0.004265333221365626, 0.11913499886958072, -0.15905017076203457, -0.3039736093523411, 0.3982193747965189, -0.10034906791093258, 0.2112840165455754, -0.0029700881300064232, 0.19651688983520635, 0.02910333607533875, -0.010333244756867106, -0.016663780787404485, -0.18627185431810525, 0.14083113715482445, 0.28505930121128376, 0.07183199843678337, 0.14741945528210357, -0.3302228142722295, -0.12782858143775508, 0.209322930385287, 0.11187597030343918, 0.008710225080498136, -0.00749266804375041, -0.247914346275278, 0.12247167411618508, -0.1735467896868403, -0.1761637669056654, -0.05580667775983994, 0.10474354182728209, 0.03914274868483727, -0.24771131628479523, -0.020162269587700184, 0.0817045900111015, 0.1425329111229915, -0.057073054362375, -0.1420068384649662, -0.041613252031115384, 0.1252789852983999, 0.010386611958249256, 0.04453757044930871, 0.02852091547101736, -0.06879698043474211, -0.07895506085165274, 0.36212908470859895, -0.054543504555924584, -0.19809565716064892, 0.09012383880236974, -0.21015380031357592, -0.17096478345875557, 0.1611662516442056, 0.09124889385241729, 0.17767877833058054, 0.0012900622442919905, 0.19290165952765026, -0.1949249785966598, 0.05839719971856819, 0.09783044615044044, -0.010588705790444063, 0.11192952678180658, 0.062186666030006915, 0.07670419463314689, 0.19457030483664803, 0.002709123402690658, -0.0018219713766414387, -0.37310515218056167, -0.24845897168494188, -0.1398385976996416, 0.13642392169970732, -0.1829441172715563, -0.19339949006143098, 0.398061046971438, 0.025763555558828206, 0.20594879939722327, 0.12646242963293425, 0.19086569120677618, 0.1173423966106314, 0.026440806353751282, 0.027301217902165192, 0.028785035544289992, 0.20113839011352797, -0.037832580076960415, -0.16476134015247226, 0.0559435745772834, 0.23715589616017846] |
707.2663 | A Finite Horizon Optimal Multiple Switching Problem | We consider the problem of optimal multiple switching in finite horizon, when
the state of the system, including the switching costs, is a general adapted
stochastic process. The problem is formulated as an extended impulse control
problem and completely solved using probabilistic tools such as the Snell
envelop of processes and reflected backward stochastic differential equations.
Finally, when the state of the system is a Markov diffusion process, we show
that the vector of value functions of the optimal problem is a viscosity
solution to a system of variational inequalities with inter-connected
obstacles.
| math.PR math.OC | we consider the problem of optimal multiple switching in finite horizon when the state of the system including the switching costs is a general adapted stochastic process the problem is formulated as an extended impulse control problem and completely solved using probabilistic tools such as the snell envelop of processes and reflected backward stochastic differential equations finally when the state of the system is a markov diffusion process we show that the vector of value functions of the optimal problem is a viscosity solution to a system of variational inequalities with interconnected obstacles | [['we', 'consider', 'the', 'problem', 'of', 'optimal', 'multiple', 'switching', 'in', 'finite', 'horizon', 'when', 'the', 'state', 'of', 'the', 'system', 'including', 'the', 'switching', 'costs', 'is', 'a', 'general', 'adapted', 'stochastic', 'process', 'the', 'problem', 'is', 'formulated', 'as', 'an', 'extended', 'impulse', 'control', 'problem', 'and', 'completely', 'solved', 'using', 'probabilistic', 'tools', 'such', 'as', 'the', 'snell', 'envelop', 'of', 'processes', 'and', 'reflected', 'backward', 'stochastic', 'differential', 'equations', 'finally', 'when', 'the', 'state', 'of', 'the', 'system', 'is', 'a', 'markov', 'diffusion', 'process', 'we', 'show', 'that', 'the', 'vector', 'of', 'value', 'functions', 'of', 'the', 'optimal', 'problem', 'is', 'a', 'viscosity', 'solution', 'to', 'a', 'system', 'of', 'variational', 'inequalities', 'with', 'interconnected', 'obstacles']] | [-0.1380453795565152, 0.07131214673841818, -0.06766808650866953, 0.0737341228781862, -0.07099924027238802, -0.12580730896242845, 0.05336523578271911, 0.3278400354808377, -0.41262577482128654, -0.23378333537989565, 0.19411863458107517, -0.24367653659134303, -0.1546431315602154, 0.18002028537723885, -0.06410744947241119, 0.14545138658935663, 0.05085612772413159, 0.027083714562718585, -0.028563021224052194, -0.18979226869295643, 0.3568073378485297, 0.002487995211155184, 0.23836807527589382, 0.001999273455591612, 0.2218742278224278, 0.05075998840382903, 0.030092113400979708, 0.055485442543642655, -0.08631337850934498, 0.08129552186476768, 0.2691680142751104, 0.14494665261478193, 0.33059861376801486, -0.44433479900321654, -0.22206841638532057, 0.1000234934911933, 0.11852426107870215, 0.12991856024550494, -0.006992252894066354, -0.27479646188677637, 0.04170864297487643, -0.15201922379163724, -0.14459522112563092, 0.013240396545859434, -0.016531433424441723, 0.042446725410960055, -0.3357093579446276, 0.07140575761916818, 0.08305187802761793, -0.0022125513911227224, -0.11780119235677425, -0.08443649765855123, 0.0021565125451513357, 0.09510826667262522, 0.03136733155359604, -0.011335753930872806, 0.11421455720424532, -0.12037041874962949, -0.180789383924416, 0.3412648594127067, -0.07652430744123175, -0.2877975064780443, 0.1254270121515278, -0.08539151223075966, -0.0736920478182935, 0.14590860755052618, 0.2127432264587892, 0.20332730098337096, -0.21549973739667855, 0.11084843948558573, -0.032292561665658026, 0.139614685558744, -6.192850489770212e-05, -0.015080461345527882, 0.10988951124431144, 0.20017261614382106, 0.16998232756891557, 0.19479372865590516, -0.02136800213847109, -0.17680361488413426, -0.2950265937471031, -0.1601311916883494, -0.14661032852206018, 0.045714470393885605, -0.10365490733504405, -0.1801108401068436, 0.329149535992333, 0.1119302808387225, 0.15796597517829047, 0.07828461613145567, 0.2777687842026353, 0.26353381267468373, -0.04966292246895772, 0.08521666459899435, 0.18874625764819744, 0.15414920926684894, 0.1485599031551711, -0.253248426532473, 0.1128234957164574, 0.06911041073861622] |
707.2664 | The Cosmology of Ricci-Tensor-Squared Gravity in the Palatini
Variational Approach | We consider the cosmology of the Ricci-tensor-squared gravity in the Palatini
variational approach. The gravitational action of standard general relativity
is modified by adding a function f(R^abR_ab) to the Einstein-Hilbert action,
and the Palatini variation is used to derive the field equations. A general
method of obtaining the background and first-order covariant and
gauge-invariant perturbation equations is outlined. As an example, we consider
the cosmological constraints on such theories arising from the supernova type
Ia and cosmic microwave background observations. We find that the best fit to
the data is a non-null leading-order correction to Einstein gravity, but the
current data exhibit no significant preference over the concordance model. The
growth of non-relativistic matter density perturbations at late times is also
analyzed, and we find that a scale-dependent (positive or negative)
sound-speed-squared term generally appears in the growth equation for
small-scale density perturbations. We also estimate the observational bound
imposed by the matter power spectrum for the model with f(R^abR_ab) =
alpha(R^abR_ab)^beta to be roughly |\beta| \lesssim O(10^{-5}) so long as the
dark matter does not possess compensating anisotropic stresses.
| gr-qc astro-ph | we consider the cosmology of the riccitensorsquared gravity in the palatini variational approach the gravitational action of standard general relativity is modified by adding a function frabr_ab to the einsteinhilbert action and the palatini variation is used to derive the field equations a general method of obtaining the background and firstorder covariant and gaugeinvariant perturbation equations is outlined as an example we consider the cosmological constraints on such theories arising from the supernova type ia and cosmic microwave background observations we find that the best fit to the data is a nonnull leadingorder correction to einstein gravity but the current data exhibit no significant preference over the concordance model the growth of nonrelativistic matter density perturbations at late times is also analyzed and we find that a scaledependent positive or negative soundspeedsquared term generally appears in the growth equation for smallscale density perturbations we also estimate the observational bound imposed by the matter power spectrum for the model with frabr_ab alpharabr_abbeta to be roughly beta lesssim o105 so long as the dark matter does not possess compensating anisotropic stresses | [['we', 'consider', 'the', 'cosmology', 'of', 'the', 'riccitensorsquared', 'gravity', 'in', 'the', 'palatini', 'variational', 'approach', 'the', 'gravitational', 'action', 'of', 'standard', 'general', 'relativity', 'is', 'modified', 'by', 'adding', 'a', 'function', 'frabr_ab', 'to', 'the', 'einsteinhilbert', 'action', 'and', 'the', 'palatini', 'variation', 'is', 'used', 'to', 'derive', 'the', 'field', 'equations', 'a', 'general', 'method', 'of', 'obtaining', 'the', 'background', 'and', 'firstorder', 'covariant', 'and', 'gaugeinvariant', 'perturbation', 'equations', 'is', 'outlined', 'as', 'an', 'example', 'we', 'consider', 'the', 'cosmological', 'constraints', 'on', 'such', 'theories', 'arising', 'from', 'the', 'supernova', 'type', 'ia', 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'stresses']] | [-0.12942822458324205, 0.11318209425664316, -0.10144586787537682, 0.13628757610480868, -0.11640194783137105, -0.11713155506221556, -0.05925032985931926, 0.2866590641005414, -0.22644157889539954, -0.32851264504822847, 0.05905790972903414, -0.2763337282378269, -0.11201505317525327, 0.1440684670962436, -0.024716769679631483, 0.0015999535098671913, -0.006102422661758189, 0.04890109279631883, -0.08593793923367114, -0.2521896894884713, 0.3375871042866827, 0.09879808444610058, 0.22893686162544705, 0.005238649529008858, 0.11006526760997828, -0.06087951671235777, -0.05294077982055558, 0.05386338371451645, -0.1725113896803426, 0.03287914022535685, 0.1692396967283593, 0.12478581755207958, 0.19936304448204062, -0.4177365263752725, -0.276257686991373, 0.12434433836586259, 0.09765407795236371, 0.17477389897658735, -0.0479653040756707, -0.29183333359682806, 0.0417194663166957, -0.19248515185257742, -0.12518329932568487, -0.05760284778690461, 0.0021383526939738155, 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707.2665 | Hydrodynamic fluctuations in relativistic superfluids | The Hamiltonian formulation of superfluids based on noncanonical Poisson
brackets is studied in detail. The assumption that the momentum density is
proportional to the flow of the conserved energy is shown to lead to the
covariant relativistic theory previously suggested by Khalatnikov, Lebedev and
Carter, and some potentials in this theory are given explicitly. We discuss
hydrodynamic fluctuations in the presence of dissipative effects and we derive
the corresponding set of hydrodynamic correlation functions. Kubo relations for
the transport coefficients are obtained.
| hep-ph cond-mat.other | the hamiltonian formulation of superfluids based on noncanonical poisson brackets is studied in detail the assumption that the momentum density is proportional to the flow of the conserved energy is shown to lead to the covariant relativistic theory previously suggested by khalatnikov lebedev and carter and some potentials in this theory are given explicitly we discuss hydrodynamic fluctuations in the presence of dissipative effects and we derive the corresponding set of hydrodynamic correlation functions kubo relations for the transport coefficients are obtained | [['the', 'hamiltonian', 'formulation', 'of', 'superfluids', 'based', 'on', 'noncanonical', 'poisson', 'brackets', 'is', 'studied', 'in', 'detail', 'the', 'assumption', 'that', 'the', 'momentum', 'density', 'is', 'proportional', 'to', 'the', 'flow', 'of', 'the', 'conserved', 'energy', 'is', 'shown', 'to', 'lead', 'to', 'the', 'covariant', 'relativistic', 'theory', 'previously', 'suggested', 'by', 'khalatnikov', 'lebedev', 'and', 'carter', 'and', 'some', 'potentials', 'in', 'this', 'theory', 'are', 'given', 'explicitly', 'we', 'discuss', 'hydrodynamic', 'fluctuations', 'in', 'the', 'presence', 'of', 'dissipative', 'effects', 'and', 'we', 'derive', 'the', 'corresponding', 'set', 'of', 'hydrodynamic', 'correlation', 'functions', 'kubo', 'relations', 'for', 'the', 'transport', 'coefficients', 'are', 'obtained']] | [-0.17964839575125086, 0.1410057898994149, -0.11351494365598916, 0.10517921342752964, -0.05520174010066179, -0.07679128398119313, -0.05068217294869899, 0.2913819581679091, -0.24835251246454057, -0.2673712157439895, -0.005432998532963145, -0.27371311893050626, -0.17240368986002555, 0.14074595095646544, -0.02366448800283961, 0.06599238341129045, -0.016076977756555852, 0.025134551247990713, -0.10732648211741457, -0.2144821804448417, 0.3550212214610017, 0.09483305501138292, 0.26154020943156464, 0.06693913352039711, 0.11624366879781209, -0.0009004208727785182, -0.07604402484849276, 0.04979220776614256, -0.17916072787272974, 0.06551490856260743, 0.18354808945186074, 0.00199072411079414, 0.1727240734574635, -0.45361933164389395, -0.2484026248907534, 0.04375066984126844, 0.09497808385640383, 0.1385809633619629, -0.0012497377153145286, -0.2474807671203119, 0.02580521435181542, -0.20044835091273233, -0.1610760707067462, -0.12061493370182268, 0.050706827450861656, 0.05245855281402061, -0.25949401999028715, 0.1588408035146663, 0.028940279584764163, 0.029754397266249104, -0.11282105358862658, -0.10548955564409858, -0.06808411849310576, 0.04368260842407259, 0.06421186631579497, -0.0018951666950270897, 0.11349481649174378, -0.12434884601715589, -0.08534874410436648, 0.4036687689197318, -0.04913113466407195, -0.2846152261580999, 0.15361105623121216, -0.14961998077768196, -0.13161988357627175, 0.07983449453533423, 0.10849054944815069, 0.10878361879688937, -0.2067817334914807, 0.1283054487281422, -0.04473067640764185, 0.039540440593732566, 0.06915345818667513, 0.028828122193084622, 0.1836009821740956, 0.059549011574013204, -0.01782664972380167, 0.11321235646879892, -0.050187945760582095, -0.1809227101607021, -0.35516389354881717, -0.120905645887322, -0.20014926193781743, 0.0663553908376432, -0.0731607452597506, -0.14039724984698895, 0.36338267616200737, 0.1818303541314402, 0.14703208479530563, 0.040239597613945965, 0.2322301536162452, 0.23172144253227842, 0.049138045199669717, 0.09343315011299239, 0.2816805171900253, 0.22668614381890198, 0.09327409157342073, -0.27442717215432444, -0.017498363161504996, 0.16181856145366755] |
707.2666 | A New Perspective on DGP Gravity | We examine brane induced gravity on codimension-1 branes, a.k.a DGP gravity,
as a theory of five-dimensional gravity containing a certain class
four-dimensional branes. From this perspective, the model suffers from a number
of pathologies which went unnoticed before. By generalizing the 5D geometry
from Minkowski to Schwarzschild, we find that when the bulk mass is large
enough, the brane hits a pressure singularity at finite radius. Further, on the
self-accelerating branch, the five-dimensional energy is unbounded from below,
implying that the self-accelerating backgrounds are unstable. Even in an empty
Minkowski bulk, standard Euclidean techniques suggest that the spontaneous
nucleation of self-accelerating branes is unsuppressed. If so, quantum effects
will strongly modify any classical intuition about the theory. We also note
that unless considered as Z_2-orbifold boundaries, self-accelerating branes
correspond to `wormhole' configurations, which introduces the usual problematic
issues associated with wormholes. Altogether these pathologies present a
serious challenge that any proposed UV completion of the DGP model must
overcome.
| hep-th astro-ph gr-qc hep-ph | we examine brane induced gravity on codimension1 branes aka dgp gravity as a theory of fivedimensional gravity containing a certain class fourdimensional branes from this perspective the model suffers from a number of pathologies which went unnoticed before by generalizing the 5d geometry from minkowski to schwarzschild we find that when the bulk mass is large enough the brane hits a pressure singularity at finite radius further on the selfaccelerating branch the fivedimensional energy is unbounded from below implying that the selfaccelerating backgrounds are unstable even in an empty minkowski bulk standard euclidean techniques suggest that the spontaneous nucleation of selfaccelerating branes is unsuppressed if so quantum effects will strongly modify any classical intuition about the theory we also note that unless considered as z_2orbifold boundaries selfaccelerating branes correspond to wormhole configurations which introduces the usual problematic issues associated with wormholes altogether these pathologies present a serious challenge that any proposed uv completion of the dgp model must overcome | [['we', 'examine', 'brane', 'induced', 'gravity', 'on', 'codimension1', 'branes', 'aka', 'dgp', 'gravity', 'as', 'a', 'theory', 'of', 'fivedimensional', 'gravity', 'containing', 'a', 'certain', 'class', 'fourdimensional', 'branes', 'from', 'this', 'perspective', 'the', 'model', 'suffers', 'from', 'a', 'number', 'of', 'pathologies', 'which', 'went', 'unnoticed', 'before', 'by', 'generalizing', 'the', '5d', 'geometry', 'from', 'minkowski', 'to', 'schwarzschild', 'we', 'find', 'that', 'when', 'the', 'bulk', 'mass', 'is', 'large', 'enough', 'the', 'brane', 'hits', 'a', 'pressure', 'singularity', 'at', 'finite', 'radius', 'further', 'on', 'the', 'selfaccelerating', 'branch', 'the', 'fivedimensional', 'energy', 'is', 'unbounded', 'from', 'below', 'implying', 'that', 'the', 'selfaccelerating', 'backgrounds', 'are', 'unstable', 'even', 'in', 'an', 'empty', 'minkowski', 'bulk', 'standard', 'euclidean', 'techniques', 'suggest', 'that', 'the', 'spontaneous', 'nucleation', 'of', 'selfaccelerating', 'branes', 'is', 'unsuppressed', 'if', 'so', 'quantum', 'effects', 'will', 'strongly', 'modify', 'any', 'classical', 'intuition', 'about', 'the', 'theory', 'we', 'also', 'note', 'that', 'unless', 'considered', 'as', 'z_2orbifold', 'boundaries', 'selfaccelerating', 'branes', 'correspond', 'to', 'wormhole', 'configurations', 'which', 'introduces', 'the', 'usual', 'problematic', 'issues', 'associated', 'with', 'wormholes', 'altogether', 'these', 'pathologies', 'present', 'a', 'serious', 'challenge', 'that', 'any', 'proposed', 'uv', 'completion', 'of', 'the', 'dgp', 'model', 'must', 'overcome']] | [-0.11013007418065092, 0.17255629074118034, -0.10688368070126751, 0.13587433517523953, -0.13951603620290776, -0.19064374355036975, -0.005832014032844572, 0.25912327416616043, -0.18309489635380172, -0.23757291065072114, 0.08474233138679568, -0.2827789869581191, -0.16666533794172061, 0.10032699109822418, -0.1511286237985833, -0.028885475840161805, 0.025561975215637835, 0.03518825108126837, -0.08391973418740076, -0.23437129228036124, 0.39617291014896316, 0.038850068084038236, 0.293612384612221, 0.028384263779522863, 0.08998757478584822, -0.04721811915302661, 0.05585629725535898, 0.06484713328053367, -0.1834481720364255, 0.03469195275614331, 0.20358461229739794, 0.11339689358928294, 0.20489650657517636, -0.4695533779713343, -0.2802886761989995, 0.1317102796128664, 0.19806633956156344, 0.19984467015396687, -0.05291275684403273, -0.27759981836608183, 0.07869390149435333, -0.1530947537533353, -0.19909433404746726, -0.003518208293185669, -0.015522728220167212, -0.1299626891143948, -0.17525589875232592, 0.07897048785132298, 0.05859614120933239, -0.03782967659615496, -0.06851483416397991, -0.05970973064010061, -0.0959165685329844, 0.012761220724926676, 0.17226706905606784, 0.039866177801558246, 0.14730501617744285, -0.13922703899765304, -0.11516463948683169, 0.36042346419918836, -0.06872996380669796, -0.21088010031706508, 0.17267436036143052, -0.13746116426041197, -0.09466598417504497, 0.13570115270690536, 0.07615491796765218, 0.16807750015923717, -0.09438260971708004, 0.22278394533025464, 0.01820762311298775, 0.13342784731663507, 0.17560628501979528, 0.03731181357698749, 0.32413860170592396, 0.10369365150255368, 0.0418104933656799, 0.13405339285415016, -0.046656616455684974, -0.11703358950538549, -0.41652541102712637, -0.08979121142113874, -0.10889367506482035, 0.12285660550806601, -0.16537042042539227, -0.24517232897755858, 0.28697024144923444, 0.12679886021292563, 0.15393648535575508, 0.02088620747386847, 0.2555675533828589, 0.014154775224848645, 0.0748566279053079, 0.09526263831956487, 0.2909807967711767, 0.05319252176907312, 0.07931091881111124, -0.22435245236583967, -0.07663750122066985, 0.1117406194742605] |
707.2667 | Electromagnetic Coulomb Gas with Vector Charges and "Elastic''
Potentials : Renormalization Group Equations | We present a detailed derivation of the renormalization group equations for
two dimensional electromagnetic Coulomb gases whose charges lie on a triangular
lattice (magnetic charges) and its dual (electric charges). The interactions
between the charges involve both angular couplings and a new electromagnetic
potential. This motivates the denomination of ``elastic'' Coulomb gas. Such
elastic Coulomb gases arise naturally in the study of the continuous melting
transition of two dimensional solids coupled to a substrate, either
commensurate or with quenched disorder.
| cond-mat.stat-mech cond-mat.dis-nn | we present a detailed derivation of the renormalization group equations for two dimensional electromagnetic coulomb gases whose charges lie on a triangular lattice magnetic charges and its dual electric charges the interactions between the charges involve both angular couplings and a new electromagnetic potential this motivates the denomination of elastic coulomb gas such elastic coulomb gases arise naturally in the study of the continuous melting transition of two dimensional solids coupled to a substrate either commensurate or with quenched disorder | [['we', 'present', 'a', 'detailed', 'derivation', 'of', 'the', 'renormalization', 'group', 'equations', 'for', 'two', 'dimensional', 'electromagnetic', 'coulomb', 'gases', 'whose', 'charges', 'lie', 'on', 'a', 'triangular', 'lattice', 'magnetic', 'charges', 'and', 'its', 'dual', 'electric', 'charges', 'the', 'interactions', 'between', 'the', 'charges', 'involve', 'both', 'angular', 'couplings', 'and', 'a', 'new', 'electromagnetic', 'potential', 'this', 'motivates', 'the', 'denomination', 'of', 'elastic', 'coulomb', 'gas', 'such', 'elastic', 'coulomb', 'gases', 'arise', 'naturally', 'in', 'the', 'study', 'of', 'the', 'continuous', 'melting', 'transition', 'of', 'two', 'dimensional', 'solids', 'coupled', 'to', 'a', 'substrate', 'either', 'commensurate', 'or', 'with', 'quenched', 'disorder']] | [-0.19273637253863854, 0.2367322192178108, -0.03096580143101164, 0.027944814870716074, -0.04011124758981168, -0.12825908518279902, 0.03143748935253825, 0.35967372118320784, -0.24812029930762947, -0.2247339656110853, -0.005831351644883398, -0.3171752081718296, -0.11551718650443946, 0.08465150431438814, 0.07349271523416974, 0.004207373281678884, -0.02666135032195598, 0.0219751910015475, -0.1281110358890146, -0.17893961559748278, 0.34230857524089514, -0.028828192077344283, 0.25781068243377375, 0.12376870670123026, 0.08118104788591154, 0.061479834746569394, 0.0414480242470745, 0.040937592030968514, -0.12109223763691261, 0.09157516833511181, 0.18563301030080764, -0.1524747334769927, 0.18628757824189962, -0.5145675770938396, -0.20073878506664186, 0.08377990702574607, 0.11609186790883541, 0.1345379129284993, -0.11326479291456053, -0.2786470338469371, -0.07506523673655466, -0.19139273066539317, -0.16683663868461734, -0.10096984385454562, -0.010609561752062291, 0.06122594544722233, -0.28303517991444094, 0.11525291851139627, 0.05872954158112407, 0.08690583477728069, -0.12438916391256498, -0.09039136462379246, -0.06199282389716245, 0.05854242828499991, 0.06944086825387785, 0.010041448354604654, 0.185332655365346, -0.1572581240494401, -0.09588826191902626, 0.42896151246968656, -0.006371922278776765, -0.20686820750124751, 0.2526613624417223, -0.15705224195844494, -0.09376679575652816, 0.18505453797988594, 0.1699794843036216, 0.08991688074020203, -0.16263438625028356, 0.1296621378554846, -0.02180337957397569, 0.09776252929586918, 0.0453572184080258, 0.03827968202531338, 0.2990119821392, 0.1507219585822895, 0.024326457647839562, 0.12242148426594213, -0.04334311234706547, -0.11301719821058213, -0.31185323423705996, -0.155306924728211, -0.18250123844482005, 0.11756271086633205, -0.11011185630559339, -0.2439114121021703, 0.351278708513928, 0.10350997793575516, 0.16304333944281096, -0.04291429029544815, 0.23727661168086342, 0.09530232795805205, 0.08242035002476769, -0.0055902404128573835, 0.2553878714359598, 0.20281349818687885, 0.08160386232775636, -0.29283028648933396, -0.12093294445658102, 0.1473149302008096] |
707.2668 | The photo-electric effect in the bi-layer graphite | We derive the differential probability of the photoelectric effect realized
at the very low temperature of double graphene in the very strong magnetic
field. The relation of this effect to the elementary particle physics, nuclear
physics and Einstein gravity is mentioned. Our approach is the analogue of the
Landau discovery of the diamagnetism, where Landau supposed the parabolic
dispersion relations for the model of diamagnetism.
| hep-ph | we derive the differential probability of the photoelectric effect realized at the very low temperature of double graphene in the very strong magnetic field the relation of this effect to the elementary particle physics nuclear physics and einstein gravity is mentioned our approach is the analogue of the landau discovery of the diamagnetism where landau supposed the parabolic dispersion relations for the model of diamagnetism | [['we', 'derive', 'the', 'differential', 'probability', 'of', 'the', 'photoelectric', 'effect', 'realized', 'at', 'the', 'very', 'low', 'temperature', 'of', 'double', 'graphene', 'in', 'the', 'very', 'strong', 'magnetic', 'field', 'the', 'relation', 'of', 'this', 'effect', 'to', 'the', 'elementary', 'particle', 'physics', 'nuclear', 'physics', 'and', 'einstein', 'gravity', 'is', 'mentioned', 'our', 'approach', 'is', 'the', 'analogue', 'of', 'the', 'landau', 'discovery', 'of', 'the', 'diamagnetism', 'where', 'landau', 'supposed', 'the', 'parabolic', 'dispersion', 'relations', 'for', 'the', 'model', 'of', 'diamagnetism']] | [-0.1409980559291748, 0.16946555844579753, -0.11088554639225968, 0.11916793080655715, -0.08713305052011631, -0.10353386654303624, 0.045278128999500324, 0.24135957933389224, -0.2755190124269575, -0.33621504726604773, 0.0025948373439650123, -0.24998459179814045, -0.12059050713970254, 0.18496838545319266, -0.012183481483505322, 0.018614113932618727, -0.04832226048008754, 0.05488976486958563, -0.06060967243348177, -0.23783013397612823, 0.33781668581068514, 0.08863364240297904, 0.29092421050255113, 0.08888434799244771, 0.10640239919750737, 0.0024761635022094615, 0.030607243484029403, 0.03123686437566693, -0.1320472832912436, 0.05271183023085961, 0.22078442505489176, -0.05355475037716902, 0.2337389995988745, -0.3764574226851647, -0.17365204733438216, -0.0012212780089332507, 0.07925875590970884, 0.14497566992202057, -0.10235058861569717, -0.26599487874370353, -0.006753797155733292, -0.16076560708192678, -0.1735010370468864, 0.011085602426185058, -0.0028894746729817527, -0.036984688330155155, -0.22605901128397538, 0.12135929353535176, 0.09954100096454988, 0.05981994751267708, -0.08386867211845059, -0.12002414759391776, -0.009337513682504113, 0.054464326340418596, 0.05553035187857369, -0.0007365782601902118, 0.12833780500894557, -0.19184664567717566, -0.07965884045339548, 0.42581980536476927, -0.10574283829818551, -0.14362590364538708, 0.17711698872108872, -0.26584461385814045, -0.10178206313688021, 0.12023081403548042, 0.1081550903331775, 0.07296601987372224, -0.1530038608667942, 0.15521309115306045, -0.042995559359685735, 0.09801989175522556, 0.042901697611579526, 0.07692137946589635, 0.26416427768193756, 0.16847555780640014, -0.007453732679669673, 0.09390118325558992, -0.1417756910722416, -0.05344098107172893, -0.3299056276392478, -0.17167490001481314, -0.15990805793553592, 0.05294618053863255, -0.05834058067524053, -0.20621751617067136, 0.37126108104936206, 0.15300410269544676, 0.12547928023559507, -0.004072462853330832, 0.23947420191879457, 0.20242924576517768, 0.05586432079569652, -0.0038608159677376254, 0.3353223510014896, 0.24969369344986403, 0.13167028648492235, -0.33342379424721, 0.008936431918006678, 0.07159580475149246] |
707.2669 | A proof of the invariance of the contact angle in Electrowetting | We prove the invariance of the contact angle in liquid-solid wetting
phenomena : an electrified droplet is spreading on a solid surface. The drop is
minimizing its energy. We express the differential of this energy with respect
to the shape of the drop and deduce necessary conditions for optimality . By
variational method, using well-chosen test functions, we obtain the main result
about the contact angle between the drop and the solid.
| math.CA math.OC | we prove the invariance of the contact angle in liquidsolid wetting phenomena an electrified droplet is spreading on a solid surface the drop is minimizing its energy we express the differential of this energy with respect to the shape of the drop and deduce necessary conditions for optimality by variational method using wellchosen test functions we obtain the main result about the contact angle between the drop and the solid | [['we', 'prove', 'the', 'invariance', 'of', 'the', 'contact', 'angle', 'in', 'liquidsolid', 'wetting', 'phenomena', 'an', 'electrified', 'droplet', 'is', 'spreading', 'on', 'a', 'solid', 'surface', 'the', 'drop', 'is', 'minimizing', 'its', 'energy', 'we', 'express', 'the', 'differential', 'of', 'this', 'energy', 'with', 'respect', 'to', 'the', 'shape', 'of', 'the', 'drop', 'and', 'deduce', 'necessary', 'conditions', 'for', 'optimality', 'by', 'variational', 'method', 'using', 'wellchosen', 'test', 'functions', 'we', 'obtain', 'the', 'main', 'result', 'about', 'the', 'contact', 'angle', 'between', 'the', 'drop', 'and', 'the', 'solid']] | [-0.1227468847164086, 0.09642628414876526, -0.13925538790811384, 0.043376181243054035, -0.03479734466610743, -0.10429185281640717, 0.0565656844825883, 0.35221644397825, -0.2962287719228438, -0.3244671983353328, 0.09265586838758151, -0.24183646224971328, -0.14516871977996612, 0.1697875251361568, -0.07997813843456762, 0.08850944442591364, 0.03379148526915482, 0.008526524751713234, -0.14590263616825852, -0.16981347860502347, 0.35423016186271394, 0.019442771884080556, 0.2512028764833563, 0.1813688876373427, 0.15369437211858375, 0.02506528053033565, 0.03577069136580186, 0.004662467073649168, -0.24928243258036673, 0.09903916184391294, 0.17064615461443153, 0.034356698051228055, 0.21424426596079554, -0.43213091551193167, -0.18627205855612244, 0.05439421561147485, 0.00980636743562562, 0.10477799628196018, 0.0060472786888047785, -0.2581871302000114, 0.04229313877544233, -0.11920486357329148, -0.2158252276280629, -0.033070408260183676, -0.019198996114677618, 0.06428964414766856, -0.21772149466643376, 0.09295466336937222, 0.07374853475817612, 0.07416506903246045, -0.07764251165790484, -0.057503694887938245, -0.0540519253167856, 0.14742664759646038, 0.08786913221036749, 0.027400561179300505, 0.18618863902853003, -0.1434140783767881, -0.015265310868354781, 0.36294435138947195, -0.03869279668267284, -0.22572754451206753, 0.1817062942710306, -0.14406305512280337, -0.043811795554522956, 0.17498345812117413, 0.18381044131570629, 0.13066044824996165, -0.11636734829018158, 0.016210057405156218, -0.04513985168720994, 0.1475482407815954, 0.13590831332174794, -0.07085614576935768, 0.15998757404408284, 0.20935202204356237, 0.14877406917512417, 0.18999701105058192, -0.11786242787659701, -0.09569110115324812, -0.36412483751773833, -0.2236999714347933, -0.1650241341774485, 0.04052568560998355, -0.13307923551474232, -0.17060895272131477, 0.3643094575298684, 0.0574554339649954, 0.19729455382164035, 0.08353375216413822, 0.264530344170011, 0.1406899799991931, -0.0010028833989053965, 0.056841480279607434, 0.2816416513440864, 0.16165185669503573, 0.1248599815648049, -0.2613222775348861, 0.13934545078580932, 0.07132427277600592] |
707.267 | Measurement of Moments of the Hadronic-Mass and -Energy Spectrum in
Inclusive Semileptonic $\bar{B} \to X_{c} \ell^{-} \bar{\nu}$ Decays | We present a measurement of moments of the inclusive hadronic-mass and
-energy spectrum in semileptonic $\bar{B} \to X_{c} \ell^{-} \bar{\nu}$ decays.
This study is based on a sample of 232 million $\Upsilon(4S) \to B\bar{B}$
decays recorded by the BABAR detector at the PEP-II $e^+e^-$-storage rings. We
reconstruct the semileptonic decay by identifying a lepton in events tagged by
a fully reconstructed hadronic decay of the second $B$ meson. We report
preliminary results for the moments $<m_X^k>$ with $k=1,...,6$ and $<n_X^k>$
with $k=2,4,6$ and $n_X^2 = m_X^2 c^4 - 2 \tilde{\Lambda} E_X +
\tilde{\Lambda}^2$, with $m_X$ the mass of the hadronic system, $E_X$ its
energy, and $\tilde\Lambda$ a constant of $0.65 \mathrm{GeV}$, for different
minimal lepton momenta between 0.8 and $1.9 \mathrm{GeV}/c$ measured in the
$B$-meson rest frame. These are predicted in the framework of a Heavy Quark
Expansion (HQE), which allows the extraction of the total semileptonic
branching fraction, the CKM-matrix element $|V_{cb}|$, and the quark masses
$m_b$ and $m_c$, together with the dominant non-perturbative HQE parameters. We
find as preliminary results $|V_{cb}| = (41.88 \pm 0.81) \cdot 10^{-3}$ and
$m_b = (4.552 \pm 0.055) \mathrm{GeV}/c^2$.
| hep-ex | we present a measurement of moments of the inclusive hadronicmass and energy spectrum in semileptonic barb to x_c ell barnu decays this study is based on a sample of 232 million upsilon4s to bbarb decays recorded by the babar detector at the pepii eestorage rings we reconstruct the semileptonic decay by identifying a lepton in events tagged by a fully reconstructed hadronic decay of the second b meson we report preliminary results for the moments m_xk with k16 and n_xk with k246 and n_x2 m_x2 c4 2 tildelambda e_x tildelambda2 with m_x the mass of the hadronic system e_x its energy and tildelambda a constant of 065 mathrmgev for different minimal lepton momenta between 08 and 19 mathrmgevc measured in the bmeson rest frame these are predicted in the framework of a heavy quark expansion hqe which allows the extraction of the total semileptonic branching fraction the ckmmatrix element v_cb and the quark masses m_b and m_c together with the dominant nonperturbative hqe parameters we find as preliminary results v_cb 4188 pm 081 cdot 103 and m_b 4552 pm 0055 mathrmgevc2 | [['we', 'present', 'a', 'measurement', 'of', 'moments', 'of', 'the', 'inclusive', 'hadronicmass', 'and', 'energy', 'spectrum', 'in', 'semileptonic', 'barb', 'to', 'x_c', 'ell', 'barnu', 'decays', 'this', 'study', 'is', 'based', 'on', 'a', 'sample', 'of', '232', 'million', 'upsilon4s', 'to', 'bbarb', 'decays', 'recorded', 'by', 'the', 'babar', 'detector', 'at', 'the', 'pepii', 'eestorage', 'rings', 'we', 'reconstruct', 'the', 'semileptonic', 'decay', 'by', 'identifying', 'a', 'lepton', 'in', 'events', 'tagged', 'by', 'a', 'fully', 'reconstructed', 'hadronic', 'decay', 'of', 'the', 'second', 'b', 'meson', 'we', 'report', 'preliminary', 'results', 'for', 'the', 'moments', 'm_xk', 'with', 'k16', 'and', 'n_xk', 'with', 'k246', 'and', 'n_x2', 'm_x2', 'c4', '2', 'tildelambda', 'e_x', 'tildelambda2', 'with', 'm_x', 'the', 'mass', 'of', 'the', 'hadronic', 'system', 'e_x', 'its', 'energy', 'and', 'tildelambda', 'a', 'constant', 'of', '065', 'mathrmgev', 'for', 'different', 'minimal', 'lepton', 'momenta', 'between', '08', 'and', '19', 'mathrmgevc', 'measured', 'in', 'the', 'bmeson', 'rest', 'frame', 'these', 'are', 'predicted', 'in', 'the', 'framework', 'of', 'a', 'heavy', 'quark', 'expansion', 'hqe', 'which', 'allows', 'the', 'extraction', 'of', 'the', 'total', 'semileptonic', 'branching', 'fraction', 'the', 'ckmmatrix', 'element', 'v_cb', 'and', 'the', 'quark', 'masses', 'm_b', 'and', 'm_c', 'together', 'with', 'the', 'dominant', 'nonperturbative', 'hqe', 'parameters', 'we', 'find', 'as', 'preliminary', 'results', 'v_cb', '4188', 'pm', '081', 'cdot', '103', 'and', 'm_b', '4552', 'pm', '0055', 'mathrmgevc2']] | [-0.08522366720551093, 0.2494171157106757, -0.036755561344658155, 0.07551092659788472, -0.008409186724041189, -0.09722421786348735, 0.09721564111299813, 0.2818761189521423, -0.15821943804621696, -0.2807242649793625, -0.03883337904832193, -0.3973976804436617, 0.10274770334762122, 0.11762860635694648, 0.08802908314658063, 0.10607323438228507, 0.10575895627960563, 0.028429053067894918, -0.12267443000472018, -0.1718824966464724, 0.21798001044562884, 0.010343088991940022, 0.17004539683594236, 0.1009634565828102, 0.028504646559511976, -0.02726345364336989, -0.06885723810376866, -0.13215734649981772, -0.1905699076583343, 0.04261931869334408, 0.18521017407333212, 0.08407775246671267, 0.10974009307167892, -0.2678899353527647, 0.030633774476924114, 0.1385699188669345, 0.16403798307691303, 0.011664476598879056, -0.03261290821712464, -0.35266486830477206, 0.17542078431429609, -0.2299732374719211, -0.07926833907840773, -0.04600263473245182, 0.053612420397943686, -0.07181994982995094, -0.3766286783751899, 0.16801043164650245, -0.08172100000349539, 0.04486956802595939, -0.010824676585450237, -0.3009517530717754, -0.029978532205734935, 0.022050596169595208, 0.10150462043072496, 0.1294198002493275, 0.18398110322920339, -0.11661437580827623, -0.12990638220815787, 0.40243148664278644, -0.07522678512148559, -0.11340211174583861, 0.08393106941532875, -0.24945472230070403, -0.14684211320642915, 0.1716096437403134, 0.2241458088199475, 0.08020775281425033, -0.21243769519031047, 0.11138868749673878, -0.024353526543626297, 0.20247761567788464, 0.08562573682250721, 0.05966756054000663, 0.1849030846038035, 0.1809357166390068, -0.057161960205329314, 0.016780943681618997, -0.145611698777814, 0.01677693759756429, -0.4138332070197378, -0.1299648288797055, -0.08003072196351631, 0.13406508298058595, -0.09681849155508514, -0.051299255515581794, 0.3975242922605269, 0.03449104282073676, 0.3500832221124853, 0.031089577393473258, 0.28764753145964017, 0.05573190069225217, 0.050711942600152854, 0.0987177295769964, 0.2948053972928652, 0.20887843582646123, 0.14462767948795643, -0.2924870786165619, -0.020699425869222198, 0.06508876015964363] |
707.2671 | More about F-term uplifting | We study moduli stabilization and a realization of de Sitter vacua in
generalized F-term uplifting scenarios of the KKLT-type anti-de Sitter vacuum,
where the uplifting sector X directly couples to the light K\"ahler modulus T
in the superpotential through, e.g., stringy instanton effects. F-term
uplifting can be achieved by a spontaneous supersymmetry breaking sector, e.g.,
the Polonyi model, the O'Raifeartaigh model and the Intriligator-Seiberg-Shih
model. Several models with the X-T mixing are examined and qualitative features
in most models {\it even with such mixing} are almost the same as those in the
KKLT scenario. One of the quantitative changes, which are relevant to the
phenomenology, is a larger hierarchy between the modulus mass m_T and the
gravitino mass $m_{3/2}$, i.e., $m_T/m_{3/2} = {\cal O}(a^2)$, where $a \sim 4
\pi^2$. In spite of such a large mass, the modulus F-term is suppressed not
like $F^T = {\cal O}(m_{3/2}/a^2)$, but like $F^T = {\cal O}(m_{3/2}/a)$ for
$\ln (M_{Pl}/m_{3/2}) \sim a$, because of an enhancement factor coming from the
X-T mixing. Then we typically find a mirage-mediation pattern of gaugino masses
of ${\cal O}(m_{3/2}/a)$, while the scalar masses would be generically of
${\cal O}(m_{3/2})$.
| hep-th hep-ph | we study moduli stabilization and a realization of de sitter vacua in generalized fterm uplifting scenarios of the kklttype antide sitter vacuum where the uplifting sector x directly couples to the light kahler modulus t in the superpotential through eg stringy instanton effects fterm uplifting can be achieved by a spontaneous supersymmetry breaking sector eg the polonyi model the oraifeartaigh model and the intriligatorseibergshih model several models with the xt mixing are examined and qualitative features in most models it even with such mixing are almost the same as those in the kklt scenario one of the quantitative changes which are relevant to the phenomenology is a larger hierarchy between the modulus mass m_t and the gravitino mass m_32 ie m_tm_32 cal oa2 where a sim 4 pi2 in spite of such a large mass the modulus fterm is suppressed not like ft cal om_32a2 but like ft cal om_32a for ln m_plm_32 sim a because of an enhancement factor coming from the xt mixing then we typically find a miragemediation pattern of gaugino masses of cal om_32a while the scalar masses would be generically of cal om_32 | [['we', 'study', 'moduli', 'stabilization', 'and', 'a', 'realization', 'of', 'de', 'sitter', 'vacua', 'in', 'generalized', 'fterm', 'uplifting', 'scenarios', 'of', 'the', 'kklttype', 'antide', 'sitter', 'vacuum', 'where', 'the', 'uplifting', 'sector', 'x', 'directly', 'couples', 'to', 'the', 'light', 'kahler', 'modulus', 't', 'in', 'the', 'superpotential', 'through', 'eg', 'stringy', 'instanton', 'effects', 'fterm', 'uplifting', 'can', 'be', 'achieved', 'by', 'a', 'spontaneous', 'supersymmetry', 'breaking', 'sector', 'eg', 'the', 'polonyi', 'model', 'the', 'oraifeartaigh', 'model', 'and', 'the', 'intriligatorseibergshih', 'model', 'several', 'models', 'with', 'the', 'xt', 'mixing', 'are', 'examined', 'and', 'qualitative', 'features', 'in', 'most', 'models', 'it', 'even', 'with', 'such', 'mixing', 'are', 'almost', 'the', 'same', 'as', 'those', 'in', 'the', 'kklt', 'scenario', 'one', 'of', 'the', 'quantitative', 'changes', 'which', 'are', 'relevant', 'to', 'the', 'phenomenology', 'is', 'a', 'larger', 'hierarchy', 'between', 'the', 'modulus', 'mass', 'm_t', 'and', 'the', 'gravitino', 'mass', 'm_32', 'ie', 'm_tm_32', 'cal', 'oa2', 'where', 'a', 'sim', '4', 'pi2', 'in', 'spite', 'of', 'such', 'a', 'large', 'mass', 'the', 'modulus', 'fterm', 'is', 'suppressed', 'not', 'like', 'ft', 'cal', 'om_32a2', 'but', 'like', 'ft', 'cal', 'om_32a', 'for', 'ln', 'm_plm_32', 'sim', 'a', 'because', 'of', 'an', 'enhancement', 'factor', 'coming', 'from', 'the', 'xt', 'mixing', 'then', 'we', 'typically', 'find', 'a', 'miragemediation', 'pattern', 'of', 'gaugino', 'masses', 'of', 'cal', 'om_32a', 'while', 'the', 'scalar', 'masses', 'would', 'be', 'generically', 'of', 'cal', 'om_32']] | [-0.14589678860591868, 0.25939891295282713, -0.034807998983823994, 0.12160128734719294, -0.07447519826134769, -0.17077164442513834, -0.021434550029020963, 0.28222811996813985, -0.22255781804055363, -0.29756918211805294, 0.11646560939722234, -0.27036272175098347, -0.1040269531063981, 0.11152972276629573, -0.05734680339138812, 0.028378203087153712, -0.026811227230559828, 0.02924223423546569, -0.08636285644984078, -0.2194509888733072, 0.3130358557861585, -0.004309252691570321, 0.20803218086411318, 0.0393098472616927, 0.06592541436183748, -0.09726988771485144, 0.05571057429987487, -0.04041893007284911, -0.1272427273330862, 0.04823882037689455, 0.17119765424753755, 0.07517719283382726, 0.11412569447062336, -0.3568909520099124, -0.20360307754138945, 0.20514383187497054, 0.16634609321132943, 0.0996208413149701, -0.026655402122792063, -0.2857640342848314, 0.07553913816297939, -0.18410004557437867, -0.1260402710471241, -0.06459838305702331, -0.00576792788374555, -0.13741204037636795, -0.3281259891643588, 0.11648304946208884, -0.03396431595831598, -0.01379252813889512, -0.016188765220999064, -0.11059711244248958, -0.14178116151878795, 0.0015318444571816004, 0.18844608535317212, 0.06479677142048317, 0.1514058153312602, -0.22186190484265622, -0.06878701274431628, 0.4315167468522194, -0.11908781950638353, -0.17234435852791008, 0.10792719140894465, -0.1326955297404061, -0.1547438300900407, 0.10424119313784803, 0.11013888904203119, 0.15620755914158627, -0.10211023116985765, 0.2318240488088782, 0.0018563726245282362, 0.17778220053654736, 0.10939163911401979, 0.06569749292799855, 0.2599625123900126, 0.18658545964837567, 0.025040776172018313, 0.059978258211401056, 0.008265832825410333, -0.12104361522993953, -0.40720264176111465, -0.11390800043879139, -0.09003174001514748, 0.11126248974100096, -0.18238796580520172, -0.15174248475443244, 0.36179241915693977, 0.08894235802466398, 0.25290265575481147, 0.05077119490993977, 0.218027589623279, 0.06576690101544475, 0.11286497731682854, 0.023920744342811325, 0.29732573185382144, 0.07187565476671987, 0.08484476255022685, -0.24991224465666564, -0.06831238481566658, 0.09197373434921706] |
707.2672 | The Jacobian ideal of a hyperplane arrangement | The Jacobian ideal of a hyperplane arrangement is an ideal in the polynomial
ring whose generators are the partial derivatives of the arrangements defining
polynomial. In this article, we prove that an arrangement can be reconstructed
from its Jacobian ideal.
| math.AC math.AG | the jacobian ideal of a hyperplane arrangement is an ideal in the polynomial ring whose generators are the partial derivatives of the arrangements defining polynomial in this article we prove that an arrangement can be reconstructed from its jacobian ideal | [['the', 'jacobian', 'ideal', 'of', 'a', 'hyperplane', 'arrangement', 'is', 'an', 'ideal', 'in', 'the', 'polynomial', 'ring', 'whose', 'generators', 'are', 'the', 'partial', 'derivatives', 'of', 'the', 'arrangements', 'defining', 'polynomial', 'in', 'this', 'article', 'we', 'prove', 'that', 'an', 'arrangement', 'can', 'be', 'reconstructed', 'from', 'its', 'jacobian', 'ideal']] | [-0.20524398945271968, 0.019709991297713714, -0.07179460365441628, -0.04276515128440224, -0.07986171159427613, -0.0860685168998316, -0.13120590856706257, 0.3308522621169686, -0.45516216810792687, -0.1395748670445755, 0.12103724657208659, -0.23854701940435916, -0.1453579930588603, 0.15297805308364332, -0.09658827616949565, -0.00030011541821295395, 0.028166540199890733, 0.07436459227465093, -0.10598167415591889, -0.3189293975010514, 0.3578881171299145, 0.05133535247296095, 0.20409637427073904, 0.024775110930204392, 0.1410539771663025, -0.010825556167401374, 0.024011549190618098, 0.039755310863256454, -0.14453924834469944, 0.14523497649352066, 0.31099028373137116, 0.09395554053480737, 0.1459416533820331, -0.39620935716666283, -0.016302458103746177, 0.22651484361849725, 0.16330381376901643, 0.056819499493576585, 0.015527163882507012, -0.19904400033410638, 0.108962695999071, -0.16513842390850186, -0.26213614174630495, -0.02441294917371124, 0.02172868587076664, 0.08267982355318963, -0.31395820567850025, -0.04397159672807902, 0.10932768061757088, 0.20486034807399847, 0.009138188799261116, -0.06754094175994396, -0.03308134991675615, 0.015309313021134585, -0.10332060719956644, 0.02454281016252935, 0.10415607061004266, -0.14698670457000845, -0.11965378876775504, 0.4038092589005828, 0.017164601804688574, -0.28720198180526496, 0.10813635483500547, -0.1613938907859847, -0.07962890032213181, 0.18169400971382857, 0.07482543010264635, 0.10671094739809632, -0.08146946998313069, 0.16563666539732366, -0.2051675675669685, 0.10122356889769435, 0.07501902606600197, -0.035449592035729435, 0.16943765552714468, 0.030623549362644553, 0.09137435890806955, 0.18008974725089502, 0.007608315162360668, -0.009296117280609906, -0.3772402487695217, -0.29780871272087095, -0.25193123035132886, 0.111105678207241, -0.1459357982770598, -0.16385100265033542, 0.439275130815804, 0.0872671301360242, 0.2245537637732923, -0.005424911272712052, 0.2565410536713898, 0.12418790836818516, 0.01286807203432545, 0.04222259175730869, 0.14942736253142358, 0.11932290333788842, -0.039114065514877436, -0.17265311156515964, 0.10852978348266333, 0.19060043965582735] |
707.2673 | New constraints on Planck-scale Lorentz Violation in QED from the Crab
Nebula | We set constraints on O(E/M) Lorentz Violation in QED in an effective field
theory framework. A major consequence of such assumptions is the modification
of the dispersion relations for electrons/positrons and photons, which in turn
can affect the electromagnetic output of astrophysical objects. We compare the
information provided by multiwavelength observations with a full and
self-consistent computation of the broad-band spectrum of the Crab Nebula. We
cast constraints of order 10^{-5} at 95% confidence level on the lepton Lorentz
Violation parameters.
| astro-ph gr-qc hep-ph hep-th | we set constraints on oem lorentz violation in qed in an effective field theory framework a major consequence of such assumptions is the modification of the dispersion relations for electronspositrons and photons which in turn can affect the electromagnetic output of astrophysical objects we compare the information provided by multiwavelength observations with a full and selfconsistent computation of the broadband spectrum of the crab nebula we cast constraints of order 105 at 95 confidence level on the lepton lorentz violation parameters | [['we', 'set', 'constraints', 'on', 'oem', 'lorentz', 'violation', 'in', 'qed', 'in', 'an', 'effective', 'field', 'theory', 'framework', 'a', 'major', 'consequence', 'of', 'such', 'assumptions', 'is', 'the', 'modification', 'of', 'the', 'dispersion', 'relations', 'for', 'electronspositrons', 'and', 'photons', 'which', 'in', 'turn', 'can', 'affect', 'the', 'electromagnetic', 'output', 'of', 'astrophysical', 'objects', 'we', 'compare', 'the', 'information', 'provided', 'by', 'multiwavelength', 'observations', 'with', 'a', 'full', 'and', 'selfconsistent', 'computation', 'of', 'the', 'broadband', 'spectrum', 'of', 'the', 'crab', 'nebula', 'we', 'cast', 'constraints', 'of', 'order', '105', 'at', '95', 'confidence', 'level', 'on', 'the', 'lepton', 'lorentz', 'violation', 'parameters']] | [-0.12279220281835691, 0.1201577962760276, -0.04116991993591741, 0.10429400866305065, -0.10529428281257917, -0.05042279825580341, 0.0775157085283556, 0.32234573605711814, -0.19016595288283294, -0.3833864692535343, 0.0321440342195723, -0.272805824821217, -0.0496593187160698, 0.19691491221296198, -0.009706327001446352, 0.0693000011422016, 0.04777471863745171, -0.01741585476944844, -0.06343144673946095, -0.1820328801088495, 0.28504843865578744, 0.113060085873269, 0.24581277800470958, 0.06829130313830611, 0.1307260268310338, -0.009577056525252115, -0.029988196758944312, -0.009098659993873702, -0.10079582479356984, 0.09851722634270971, 0.16103418210498344, 0.16364524590230925, 0.17698500758427896, -0.44803514306284026, -0.19435135316230173, 0.05977083071146482, 0.11106512137332264, 0.058835106009307005, -0.008795253814623497, -0.3110060042437212, 0.03219122999566205, -0.20505376255576624, -0.12562376571773196, -0.02010728029626203, -0.02416233187627599, -0.03345066643561478, -0.30564489029347897, 0.07682199911667137, -0.005757811444777029, 0.044439976552018416, -0.07329782766554459, -0.057562923007127315, 0.017953434956179543, 0.06890051419858212, 0.06905016591370014, -0.005448052279843753, 0.16393989237473794, -0.17871020400873672, -0.12328762785002681, 0.4403836995271253, -0.08680476401616348, -0.159928354345561, 0.12224387026098729, -0.20000145360712468, -0.20793900147862274, 0.13151741319876395, 0.203303107485911, 0.057941604440134985, -0.17246524903371377, 0.1185889076312176, -0.056144785322823826, 0.18266131963442872, 0.0474088796770867, 0.10637834911913048, 0.23985824430430377, 0.12986127417362123, 0.022501554742547464, 0.08937442236016561, -0.12029009230433457, -0.017161620290731483, -0.39859289317219343, -0.10225739990027598, -0.12752026403868963, 0.10501069392732999, -0.13639934291509068, -0.07901446872540278, 0.40563768587638566, 0.14998845538170433, 0.17119037690514952, 0.015744305205715382, 0.3160965168204756, 0.1542574413407114, 0.06288640334466357, 0.07703423966872103, 0.3502681491908008, 0.15517165893861265, 0.04588256786680884, -0.21579721440664595, 0.018949496157375383, 0.018893505354630358] |
707.2674 | The effect of type I migration on the formation of terrestrial planets
in hot-Jupiter systems | Context: Our previous models of a giant planet migrating through an inner
protoplanet/planetesimal disk find that the giant shepherds a portion of the
material it encounters into interior orbits, whilst scattering the rest into
external orbits. Scattering tends to dominate, leaving behind abundant material
that can accrete into terrestrial planets. Aims: We add to the possible realism
of our model by simulating type I migration forces which cause an inward drift,
and strong eccentricity and inclination damping of protoplanetary bodies. This
extra dissipation might be expected to enhance shepherding at the expense of
scattering, possibly modifying our previous conclusions. Methods: We employ an
N-body code that is linked to a viscous gas disk algorithm capable of
simulating: gas accretion onto the central star; gap formation in the vicinity
of the giant planet; type II migration of the giant planet; type I migration of
protoplanets; and the effect of gas drag on planetesimals. We use the code to
re-run three scenarios from a previous work where type I migration was not
included. Results: The additional dissipation introduced by type I migration
enhances the inward shepherding of material but does not severely reduce
scattering. We find that > 50% of the solids disk material still survives the
migration in scattered exterior orbits: most of it well placed to complete
terrestrial planet formation at < 3 AU. The shepherded portion of the disk
accretes into hot-Earths, which survive in interior orbits for the duration of
our simulations. Conclusions: Water-rich terrestrial planets can form in the
habitable zones of hot-Jupiter systems and hot-Earths and hot-Neptunes may also
be present. These systems should be targets of future planet search missions.
| astro-ph | context our previous models of a giant planet migrating through an inner protoplanetplanetesimal disk find that the giant shepherds a portion of the material it encounters into interior orbits whilst scattering the rest into external orbits scattering tends to dominate leaving behind abundant material that can accrete into terrestrial planets aims we add to the possible realism of our model by simulating type i migration forces which cause an inward drift and strong eccentricity and inclination damping of protoplanetary bodies this extra dissipation might be expected to enhance shepherding at the expense of scattering possibly modifying our previous conclusions methods we employ an nbody code that is linked to a viscous gas disk algorithm capable of simulating gas accretion onto the central star gap formation in the vicinity of the giant planet type ii migration of the giant planet type i migration of protoplanets and the effect of gas drag on planetesimals we use the code to rerun three scenarios from a previous work where type i migration was not included results the additional dissipation introduced by type i migration enhances the inward shepherding of material but does not severely reduce scattering we find that 50 of the solids disk material still survives the migration in scattered exterior orbits most of it well placed to complete terrestrial planet formation at 3 au the shepherded portion of the disk accretes into hotearths which survive in interior orbits for the duration of our simulations conclusions waterrich terrestrial planets can form in the habitable zones of hotjupiter systems and hotearths and hotneptunes may also be present these systems should be targets of future planet search missions | [['context', 'our', 'previous', 'models', 'of', 'a', 'giant', 'planet', 'migrating', 'through', 'an', 'inner', 'protoplanetplanetesimal', 'disk', 'find', 'that', 'the', 'giant', 'shepherds', 'a', 'portion', 'of', 'the', 'material', 'it', 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707.2675 | Q0045-3337: models including strong lensing by a spiral galaxy | Aims. Falomo et al. (2005) discovered a disk-like galaxy at ~ 1.2 arcsec from
the QSO Q0045-3337 by means of ESO VLT adaptive optics. They estimated a galaxy
Einstein radius (for a point mass) of comparable size, thus pointing up the
existence of a new, rare, spiral lens candidate, despite no evident image
splitting.
Here we discuss the possible lensing effect of the galaxy in some more
detail.
Methods. We performed two dimensional surface photometry on the VLT image of
the galaxy, confirming its spiral nature. We then verified if simple mass
models, partially constrained by observational data, require unrealistic
parameters to produce a still hidden second quasar image. We also evaluated the
respective viability of an instrumental or a lensing origin of the observed QSO
deformation.
Results. After galaxy model subtraction, we found a residual image, likely
not related to gravitational lensing. Existing data are not sufficient to
assess the presence of image splitting, nor to constrain the number of images
or discriminate between galaxy mass models.
Conclusion. Further observations are mandatory to progress in the study of
this remarkable system, that could shed more light on the lensing behaviour of
spiral galaxies.
| astro-ph | aims falomo et al 2005 discovered a disklike galaxy at 12 arcsec from the qso q00453337 by means of eso vlt adaptive optics they estimated a galaxy einstein radius for a point mass of comparable size thus pointing up the existence of a new rare spiral lens candidate despite no evident image splitting here we discuss the possible lensing effect of the galaxy in some more detail methods we performed two dimensional surface photometry on the vlt image of the galaxy confirming its spiral nature we then verified if simple mass models partially constrained by observational data require unrealistic parameters to produce a still hidden second quasar image we also evaluated the respective viability of an instrumental or a lensing origin of the observed qso deformation results after galaxy model subtraction we found a residual image likely not related to gravitational lensing existing data are not sufficient to assess the presence of image splitting nor to constrain the number of images or discriminate between galaxy mass models conclusion further observations are mandatory to progress in the study of this remarkable system that could shed more light on the lensing behaviour of spiral galaxies | [['aims', 'falomo', 'et', 'al', '2005', 'discovered', 'a', 'disklike', 'galaxy', 'at', '12', 'arcsec', 'from', 'the', 'qso', 'q00453337', 'by', 'means', 'of', 'eso', 'vlt', 'adaptive', 'optics', 'they', 'estimated', 'a', 'galaxy', 'einstein', 'radius', 'for', 'a', 'point', 'mass', 'of', 'comparable', 'size', 'thus', 'pointing', 'up', 'the', 'existence', 'of', 'a', 'new', 'rare', 'spiral', 'lens', 'candidate', 'despite', 'no', 'evident', 'image', 'splitting', 'here', 'we', 'discuss', 'the', 'possible', 'lensing', 'effect', 'of', 'the', 'galaxy', 'in', 'some', 'more', 'detail', 'methods', 'we', 'performed', 'two', 'dimensional', 'surface', 'photometry', 'on', 'the', 'vlt', 'image', 'of', 'the', 'galaxy', 'confirming', 'its', 'spiral', 'nature', 'we', 'then', 'verified', 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707.2676 | Groundstate splitting around rotating mini Blackholes | In this letter we present the result of a spin-dependent groundstate-energy
calculation for fermionic boundstates in the spacetime around a rotating
blackhole. Using a slow rotation approximation and a minimax variational
approach we find boundstate energies of 0 to 5 percent of the fermions
flatspace restmass. The groundstate displays a spin-dependent splitting with an
energy difference of about 10 percent of the binding energy. For a dilute gas
of primordial mini blackholes with gravitationally bound electrons spin-flip
transitions could possibly give rise to observable signatures in the observed
soft X-ray spectrum for sources at cosmological distances.
| gr-qc astro-ph | in this letter we present the result of a spindependent groundstateenergy calculation for fermionic boundstates in the spacetime around a rotating blackhole using a slow rotation approximation and a minimax variational approach we find boundstate energies of 0 to 5 percent of the fermions flatspace restmass the groundstate displays a spindependent splitting with an energy difference of about 10 percent of the binding energy for a dilute gas of primordial mini blackholes with gravitationally bound electrons spinflip transitions could possibly give rise to observable signatures in the observed soft xray spectrum for sources at cosmological distances | [['in', 'this', 'letter', 'we', 'present', 'the', 'result', 'of', 'a', 'spindependent', 'groundstateenergy', 'calculation', 'for', 'fermionic', 'boundstates', 'in', 'the', 'spacetime', 'around', 'a', 'rotating', 'blackhole', 'using', 'a', 'slow', 'rotation', 'approximation', 'and', 'a', 'minimax', 'variational', 'approach', 'we', 'find', 'boundstate', 'energies', 'of', '0', 'to', '5', 'percent', 'of', 'the', 'fermions', 'flatspace', 'restmass', 'the', 'groundstate', 'displays', 'a', 'spindependent', 'splitting', 'with', 'an', 'energy', 'difference', 'of', 'about', '10', 'percent', 'of', 'the', 'binding', 'energy', 'for', 'a', 'dilute', 'gas', 'of', 'primordial', 'mini', 'blackholes', 'with', 'gravitationally', 'bound', 'electrons', 'spinflip', 'transitions', 'could', 'possibly', 'give', 'rise', 'to', 'observable', 'signatures', 'in', 'the', 'observed', 'soft', 'xray', 'spectrum', 'for', 'sources', 'at', 'cosmological', 'distances']] | [-0.14432564253342878, 0.202047067867304, -0.07282906476604312, 0.1423612850705946, -0.00920123526532399, -0.09622440189123153, 0.07349725003648354, 0.3227977402116123, -0.17619246402755379, -0.34925321159565725, -0.0367274176415154, -0.3160017055900473, -0.017079271053846337, 0.15807920939436085, 0.0472688192991834, -0.013083412380594956, 0.036516478832958166, 0.02678511125084601, -0.11569186914957276, -0.17418172488503747, 0.31517096610837864, 0.07039525323596439, 0.16536769104239188, 0.10270307751764593, 0.08604422543491973, -0.03536335896014383, 0.06285846643149853, -0.03678420905612017, -0.1600965525121673, 0.08448834674751485, 0.22689363226833703, 0.014549914620032436, 0.18623693644216185, -0.38545710489546, -0.18695024948959288, 0.07543902989280851, 0.17997393967387706, 0.1871063852486642, -0.08421936203774653, -0.25868501200487737, 0.010438317021256999, -0.21048938490842517, -0.1955735243856907, -0.06578039370085063, 0.025419654086918424, -0.030813175371210828, -0.23848565470329242, 0.18627481382144126, 0.03019651877448747, -0.006566655704457509, -0.11382786491089256, -0.08834212989497342, -0.005726971346149711, 0.007213304211434565, 0.060779870615193715, 0.03381760350404013, 0.1683896381358959, -0.12645435782737638, -0.10540043091597526, 0.3981395736532776, -0.1149974603794123, -0.10745273187854572, 0.15129927720286343, -0.1975504153359093, -0.15835982812078375, 0.2137888916032879, 0.1707566980444091, 0.1416345041147188, -0.13956766221182126, 0.061951814601075295, -0.0025873547738516018, 0.17720693847766503, 0.10833998243569544, 0.0877257893744268, 0.31983906424751407, 0.13395704721639815, 0.04347333725737898, 0.11420643869006246, -0.15779080347305066, -0.06900806313772735, -0.302679231488391, -0.10753361707197895, -0.16419528645806405, 0.1435876351952749, -0.09378504477622061, -0.18291397844502505, 0.36990432478977664, 0.07492961580129831, 0.19782474964955135, 0.042286488459151436, 0.26452439264394345, 0.1275736089305658, 0.022553352614570605, 0.09658068090089057, 0.3222461762430612, 0.16058196729343188, 0.0806240799763289, -0.24831589192004971, -0.05442318369781501, 0.04746595635814102] |
707.2677 | On the migration of protoplanets embedded in circumbinary disks | We present the results of hydrodynamical simulations of low mass protoplanets
embedded in circumbinary accretion disks. The aim is to examine the migration
and long term orbital evolution of the protoplanets, in order to establish the
stability properties of planets that form in circumbinary disks. Simulations
were performed using a grid--based hydrodynamics code. First we present a set
of calculations that study how a binary interacts with a circumbinary disk. We
evolve the system for 10^5 binary orbits, which is the time needed for the
system to reach a quasi-equilibrium state. From this time onward the apsidal
lines of the disk and the binary are aligned, and the binary eccentricity
remains essentially unchanged with a value of e_b ~ 0.08. Once this stationary
state is obtained, we embed a low mass protoplanet in the disk and let it
evolve under the action of the binary and disk forces. We consider protoplanets
with masses of 5, 10 and 20 Earth masses. In each case, we find that inward
migration of the protoplanet is stopped at the edge of the tidally truncated
cavity formed by the binary. This effect is due to positve corotation torques,
which can counterbalance the net negative Lindblad torques in disk regions
where the surface density profile has a sufficiently large positive gradient.
Halting of migration occurs in a region of long-term stability, suggesting that
low mass circumbinary planets may be common, and that gas giant circumbinary
planets should be able to form in circumbinary disks.
| astro-ph | we present the results of hydrodynamical simulations of low mass protoplanets embedded in circumbinary accretion disks the aim is to examine the migration and long term orbital evolution of the protoplanets in order to establish the stability properties of planets that form in circumbinary disks simulations were performed using a gridbased hydrodynamics code first we present a set of calculations that study how a binary interacts with a circumbinary disk we evolve the system for 105 binary orbits which is the time needed for the system to reach a quasiequilibrium state from this time onward the apsidal lines of the disk and the binary are aligned and the binary eccentricity remains essentially unchanged with a value of e_b 008 once this stationary state is obtained we embed a low mass protoplanet in the disk and let it evolve under the action of the binary and disk forces we consider protoplanets with masses of 5 10 and 20 earth masses in each case we find that inward migration of the protoplanet is stopped at the edge of the tidally truncated cavity formed by the binary this effect is due to positve corotation torques which can counterbalance the net negative lindblad torques in disk regions where the surface density profile has a sufficiently large positive gradient halting of migration occurs in a region of longterm stability suggesting that low mass circumbinary planets may be common and that gas giant circumbinary planets should be able to form in circumbinary disks | [['we', 'present', 'the', 'results', 'of', 'hydrodynamical', 'simulations', 'of', 'low', 'mass', 'protoplanets', 'embedded', 'in', 'circumbinary', 'accretion', 'disks', 'the', 'aim', 'is', 'to', 'examine', 'the', 'migration', 'and', 'long', 'term', 'orbital', 'evolution', 'of', 'the', 'protoplanets', 'in', 'order', 'to', 'establish', 'the', 'stability', 'properties', 'of', 'planets', 'that', 'form', 'in', 'circumbinary', 'disks', 'simulations', 'were', 'performed', 'using', 'a', 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707.2678 | From Cooperative Paramagnet to N\'{e}el Order in Y_2Ru_2O_7 | Spin correlations in the pyrochlore antiferromagnet Y_2Ru_2O_7 with
Curie-Weiss temperature $\Theta_{CW}=-1100$ K and critical temperature T_N=77 K
were examined through neutron scattering. For $T_N<T<\Theta_{CW}/3$ the data
show spin relaxation with a rate $\hbar\Gamma= 1.17(9)k_BT$. For T<T_N spectral
weight moves to higher energies with substantial changes up to $4\times
k_BT_N$. For T<<T_N there is a $\Delta=11(1)$ meV energy gap and a pronounced
spectral maximum at 19.7 meV. Throughout the temperature range examined the
wave vector dependence of inelastic scattering exhibits a broad peak for
$Qd\approx 3.8$ (d is Ru-Ru spacing) consistent with dipolar spin correlations.
| cond-mat.str-el | spin correlations in the pyrochlore antiferromagnet y_2ru_2o_7 with curieweiss temperature theta_cw1100 k and critical temperature t_n77 k were examined through neutron scattering for t_nttheta_cw3 the data show spin relaxation with a rate hbargamma 1179k_bt for tt_n spectral weight moves to higher energies with substantial changes up to 4times k_bt_n for tt_n there is a delta111 mev energy gap and a pronounced spectral maximum at 197 mev throughout the temperature range examined the wave vector dependence of inelastic scattering exhibits a broad peak for qdapprox 38 d is ruru spacing consistent with dipolar spin correlations | [['spin', 'correlations', 'in', 'the', 'pyrochlore', 'antiferromagnet', 'y_2ru_2o_7', 'with', 'curieweiss', 'temperature', 'theta_cw1100', 'k', 'and', 'critical', 'temperature', 't_n77', 'k', 'were', 'examined', 'through', 'neutron', 'scattering', 'for', 't_nttheta_cw3', 'the', 'data', 'show', 'spin', 'relaxation', 'with', 'a', 'rate', 'hbargamma', '1179k_bt', 'for', 'tt_n', 'spectral', 'weight', 'moves', 'to', 'higher', 'energies', 'with', 'substantial', 'changes', 'up', 'to', '4times', 'k_bt_n', 'for', 'tt_n', 'there', 'is', 'a', 'delta111', 'mev', 'energy', 'gap', 'and', 'a', 'pronounced', 'spectral', 'maximum', 'at', '197', 'mev', 'throughout', 'the', 'temperature', 'range', 'examined', 'the', 'wave', 'vector', 'dependence', 'of', 'inelastic', 'scattering', 'exhibits', 'a', 'broad', 'peak', 'for', 'qdapprox', '38', 'd', 'is', 'ruru', 'spacing', 'consistent', 'with', 'dipolar', 'spin', 'correlations']] | [-0.15055633624365858, 0.27752877598111303, -0.012964472770257744, 0.06815543609703782, -0.02175667425847699, -0.1393544467945778, 0.0889234897642678, 0.42281149656966677, -0.22836433251545396, -0.32804155182959727, -0.00041057646604861285, -0.3758333045664395, 0.02715857635620375, 0.17164299700430832, 0.15145658093185144, 0.019230382619858828, -0.001906550261950077, 0.07310684966356602, -0.16625797174611065, -0.14899649309822857, 0.25303258741447743, 0.08461206975184617, 0.2705346761964435, 0.1569624946027626, 0.06809389963069237, 0.06178157249476414, 0.12977978705190296, -0.031813326524570584, -0.17932797938065473, -0.01429278984573483, 0.28972989013201966, -0.0718013312867951, 0.15664288557546083, -0.3059254676904963, -0.21377985266465044, 0.06449554250359016, 0.10526970511188644, 0.07396199552039075, -0.022059927412936855, -0.19936263247198144, 0.04112576093351425, -0.14746790366290613, -0.1494874684668016, -0.0744958913040369, 0.07372278074712255, -0.010239238244329775, -0.2937197271615353, 0.2037980881368005, 0.03865687289210253, 0.13714735446021306, -0.10137140620391556, -0.22979964353793927, -0.05724331376489338, -0.031427471833520154, 0.06103978040194962, 0.09488844871520996, 0.12229713259351462, -0.07513846620527465, -0.09630261825906589, 0.3179062639341451, -0.09585461883567446, 0.0016095211816041968, 0.1373166760462228, -0.22486781645133053, -0.05730913236715593, 0.276689424266129, 0.1122149903297446, 0.05007195110476121, -0.13071125987267426, 0.03912921573528154, 0.016573396229982475, 0.24460690217579953, 0.08122868930141247, 0.03885304243006029, 0.25040337004222324, 0.20699561054298524, 0.02778813135701903, 0.12315183632119103, -0.19561988744900974, -0.07010678632921258, -0.2015320703896239, -0.07339047901548965, -0.20283044285552446, 0.10460025705935211, -0.14482871145192738, -0.10462974425578533, 0.3589406306747087, 0.10645576680165737, 0.23735530016034148, 0.034421830984958726, 0.18111873439751391, 0.15806075558066368, 0.08608412384705315, 0.1044521929620397, 0.2252629337680721, 0.23235231624147312, 0.1648923424343297, -0.3074496563870546, 0.0007132961090551256, -0.07582780312703447] |
707.2679 | J0316+4328: a Probable "Asymmetric Double" Lens | We report a probable gravitational lens J0316+4328, one of 19 candidate
asymmetric double lenses (2 images at a high flux density ratio) from CLASS.
Observations with the Very Large Array (VLA), MERLIN and the Very Long Baseline
Array (VLBA) imply that J0316+4328 is a lens with high confidence. It has 2
images separated by 0.40", with 6 GHz flux densities of 62 mJy and 3.2 mJy. The
flux density ratio of ~19 (constant over the frequency range 6-22 GHz) is the
largest for any 2 image gravitational lens. High resolution optical imaging and
deeper VLBI maps should confirm the lensing interpretation and provide inputs
to detailed lens models. The unique configuration will give strong constraints
on the lens galaxy's mass profile.
| astro-ph | we report a probable gravitational lens j03164328 one of 19 candidate asymmetric double lenses 2 images at a high flux density ratio from class observations with the very large array vla merlin and the very long baseline array vlba imply that j03164328 is a lens with high confidence it has 2 images separated by 040 with 6 ghz flux densities of 62 mjy and 32 mjy the flux density ratio of 19 constant over the frequency range 622 ghz is the largest for any 2 image gravitational lens high resolution optical imaging and deeper vlbi maps should confirm the lensing interpretation and provide inputs to detailed lens models the unique configuration will give strong constraints on the lens galaxys mass profile | [['we', 'report', 'a', 'probable', 'gravitational', 'lens', 'j03164328', 'one', 'of', '19', 'candidate', 'asymmetric', 'double', 'lenses', '2', 'images', 'at', 'a', 'high', 'flux', 'density', 'ratio', 'from', 'class', 'observations', 'with', 'the', 'very', 'large', 'array', 'vla', 'merlin', 'and', 'the', 'very', 'long', 'baseline', 'array', 'vlba', 'imply', 'that', 'j03164328', 'is', 'a', 'lens', 'with', 'high', 'confidence', 'it', 'has', '2', 'images', 'separated', 'by', '040', 'with', '6', 'ghz', 'flux', 'densities', 'of', '62', 'mjy', 'and', '32', 'mjy', 'the', 'flux', 'density', 'ratio', 'of', '19', 'constant', 'over', 'the', 'frequency', 'range', '622', 'ghz', 'is', 'the', 'largest', 'for', 'any', '2', 'image', 'gravitational', 'lens', 'high', 'resolution', 'optical', 'imaging', 'and', 'deeper', 'vlbi', 'maps', 'should', 'confirm', 'the', 'lensing', 'interpretation', 'and', 'provide', 'inputs', 'to', 'detailed', 'lens', 'models', 'the', 'unique', 'configuration', 'will', 'give', 'strong', 'constraints', 'on', 'the', 'lens', 'galaxys', 'mass', 'profile']] | [-0.13192477596516744, 0.06511464173428151, -0.028694326969787104, 0.05818578294290527, -0.0878495515378959, -0.13700772626638538, 0.025325067758074953, 0.43125651282172245, -0.12141212497391746, -0.42821926341838196, 0.13228162021367387, -0.27063109352402076, -0.03534302861281052, 0.17716473324553056, 0.007555142021542336, 0.009438147047997312, 0.10009624247885301, -0.09863247502641165, -0.0703974290478959, -0.19894125782923788, 0.2210634960049466, 0.1277084334463883, 0.249923639437487, 0.01985089266829255, 0.1586440711383935, -0.04647709249749686, -0.08470881119088716, 0.011341258093026005, -0.12082494179623547, 0.03345624306591369, 0.2502399832708822, 0.11217413152795003, 0.18892537510930366, -0.30629999659360707, -0.1921960196023447, 0.0452407699845293, 0.0877558704086055, 0.04816485468313849, -4.1717382640961336e-05, -0.3113285407987462, 0.10028474148120262, -0.1639029431712477, -0.15478201874555284, 0.06457236506624006, 0.0851280603131295, 0.0707208781734015, -0.2307733388621548, 0.11943224093685036, -0.03802791843288617, 0.07315394269819019, -0.09853684117023621, -0.1478578513018599, -0.005682992424127184, 0.07902236958229993, -0.0737925148441871, 0.13714136169565952, 0.13640968965272568, -0.15638923790196285, -0.04801857311810766, 0.3362371098610158, -0.10737416611364632, -0.08146036510989696, 0.2055177348626762, -0.24502010690048337, -0.18728448438043355, 0.24076264454912738, 0.13543740000200122, 0.05015983284224106, -0.09453846148250453, -0.006852824822021257, -0.03354203302565837, 0.32804806414647264, 0.10342063578706578, 0.06710621686808828, 0.3568335595294176, 0.1355018088429728, 0.12695451098212487, 0.09805022047816955, -0.31744513119876133, 0.05827551549535338, -0.2614433742558756, -0.054730580775302, -0.1552874150455092, 0.16013482374289786, -0.1775152865956741, -0.08846972463505749, 0.34988966536856875, 0.07465878218615882, 0.19238621135782294, 0.10069015591029673, 0.29866811277798744, 0.0569311369840494, 0.10702863007494319, 0.024300672063024855, 0.3338261853214823, 0.18707585051272282, 0.11382604630257026, -0.113409569970246, -0.04135203978218952, -0.048956646658323645] |
707.268 | An X-ray view of Pictor A radio lobes: a spatially resolved study | A spatially resolved analysis of the lobes of the radio galaxy Pictor A has
been performed for the first time starting from a 50 ksec XMM-Newton
observation. Magnetic field, B_{IC}, particle density, particle to magnetic
field energy density ratios have been measured. Our study shows that B_{IC}
varies through the lobes. On the contrary, a rather uniform distribution of the
particles is observed. In both the lobes, the equipartition magnetic field,
B_{eq}, is bigger than the Inverse Compton value, B_{IC}, calculated from the
radio to X-ray flux ratio.
| astro-ph | a spatially resolved analysis of the lobes of the radio galaxy pictor a has been performed for the first time starting from a 50 ksec xmmnewton observation magnetic field b_ic particle density particle to magnetic field energy density ratios have been measured our study shows that b_ic varies through the lobes on the contrary a rather uniform distribution of the particles is observed in both the lobes the equipartition magnetic field b_eq is bigger than the inverse compton value b_ic calculated from the radio to xray flux ratio | [['a', 'spatially', 'resolved', 'analysis', 'of', 'the', 'lobes', 'of', 'the', 'radio', 'galaxy', 'pictor', 'a', 'has', 'been', 'performed', 'for', 'the', 'first', 'time', 'starting', 'from', 'a', '50', 'ksec', 'xmmnewton', 'observation', 'magnetic', 'field', 'b_ic', 'particle', 'density', 'particle', 'to', 'magnetic', 'field', 'energy', 'density', 'ratios', 'have', 'been', 'measured', 'our', 'study', 'shows', 'that', 'b_ic', 'varies', 'through', 'the', 'lobes', 'on', 'the', 'contrary', 'a', 'rather', 'uniform', 'distribution', 'of', 'the', 'particles', 'is', 'observed', 'in', 'both', 'the', 'lobes', 'the', 'equipartition', 'magnetic', 'field', 'b_eq', 'is', 'bigger', 'than', 'the', 'inverse', 'compton', 'value', 'b_ic', 'calculated', 'from', 'the', 'radio', 'to', 'xray', 'flux', 'ratio']] | [-0.11697374455715445, 0.1568148868179626, -0.11604594898050312, 0.09764205978982235, -0.06386704010550272, -0.03862386774695055, 0.004343483914536509, 0.43766573029146955, -0.15929174319502304, -0.34856951660317875, 0.03432205200211187, -0.27364812579683284, 0.02829111099179665, 0.1966457137823454, 0.08477123238315637, -0.04924791744931347, -0.0022817661096765237, -0.004439126382666555, -0.052902429926854726, -0.14328026606976477, 0.271287252080087, 0.12643949510013705, 0.28686992944726214, 0.022753010567447, 0.07497513634999367, -0.0432573015648152, -0.04478338812689551, 0.056452304548160595, -0.09996872595605634, 0.022199691516685893, 0.14630894422192464, 0.030454675951411693, 0.22389476077461784, -0.39510162568397145, -0.2356274204159325, 0.05777506755310407, 0.19055414206708188, -0.0021804529453881764, -0.03709143731049897, -0.27388565910091117, 0.053404365078842435, -0.16813704362192022, -0.1572375402161428, 0.09822091544893655, 0.038872657480004076, 0.027882339170901105, -0.24479510439348154, 0.1284007136762904, -0.032197992475527244, 0.08138794969471003, -0.1530420761237937, -0.1115763909633229, 0.004346008245854385, 0.055813059597064486, 0.10643761643653059, 0.11081609087308276, 0.22173219728706914, -0.12588573264127428, -0.1037157706450671, 0.3368495137494227, -0.05401782448941297, -0.02608559022403576, 0.15259734270247546, -0.24081704541194168, -0.1281606938838112, 0.22831371521831237, 0.11538588360417634, 0.09467698967041956, -0.11160153725226833, 0.06014880298012444, -0.08740410379356366, 0.2393509391589429, 0.04189064651092684, 0.0009497320519254903, 0.2736260862068527, 0.11868831434879791, 0.03830476024516181, 0.15575537519312507, -0.2737772506423591, -0.04179701271509244, -0.2197689643256705, -0.09808787453022721, -0.23419267384319523, 0.12081378760393074, -0.10367491727546704, -0.1383221780256876, 0.3858244707437486, 0.1054904866667295, 0.17891599499324168, 0.028355910426894712, 0.3306284126698632, 0.16156162665125026, 0.07505826354397206, 0.12275382898620922, 0.3319996405308219, 0.22601878190074454, 0.16532709693737244, -0.21179446145172484, 0.03320166408295997, -0.020663418039806526] |
707.2681 | Shear viscosity of neutron matter from realistic nucleon-nucleon
interactions | The calculation of transport properties of Fermi liquids, based on the
formalism developed by Abrikosov and Khalatnikov, requires the knowledge of the
probability of collisions between quasiparticles in the vicinity of the Fermi
surface. We have carried out a numerical study of the shear viscosity of pure
neutron matter, whose value plays a pivotal role in determining the stability
of rotating neutron stars, in which these processes are described using a
state-of-the-art nucleon-nucleon potential model. Within our approach medium
modifications of the scattering cross section are consistently taken into
account, through an effective interaction obtained from the matrix elements of
the bare interaction between correlated states. Inclusion of medium effects
lead to a large increase of the viscosity at densities larger than $\sim 0.1$
fm^{-3}.
| nucl-th astro-ph | the calculation of transport properties of fermi liquids based on the formalism developed by abrikosov and khalatnikov requires the knowledge of the probability of collisions between quasiparticles in the vicinity of the fermi surface we have carried out a numerical study of the shear viscosity of pure neutron matter whose value plays a pivotal role in determining the stability of rotating neutron stars in which these processes are described using a stateoftheart nucleonnucleon potential model within our approach medium modifications of the scattering cross section are consistently taken into account through an effective interaction obtained from the matrix elements of the bare interaction between correlated states inclusion of medium effects lead to a large increase of the viscosity at densities larger than sim 01 fm3 | [['the', 'calculation', 'of', 'transport', 'properties', 'of', 'fermi', 'liquids', 'based', 'on', 'the', 'formalism', 'developed', 'by', 'abrikosov', 'and', 'khalatnikov', 'requires', 'the', 'knowledge', 'of', 'the', 'probability', 'of', 'collisions', 'between', 'quasiparticles', 'in', 'the', 'vicinity', 'of', 'the', 'fermi', 'surface', 'we', 'have', 'carried', 'out', 'a', 'numerical', 'study', 'of', 'the', 'shear', 'viscosity', 'of', 'pure', 'neutron', 'matter', 'whose', 'value', 'plays', 'a', 'pivotal', 'role', 'in', 'determining', 'the', 'stability', 'of', 'rotating', 'neutron', 'stars', 'in', 'which', 'these', 'processes', 'are', 'described', 'using', 'a', 'stateoftheart', 'nucleonnucleon', 'potential', 'model', 'within', 'our', 'approach', 'medium', 'modifications', 'of', 'the', 'scattering', 'cross', 'section', 'are', 'consistently', 'taken', 'into', 'account', 'through', 'an', 'effective', 'interaction', 'obtained', 'from', 'the', 'matrix', 'elements', 'of', 'the', 'bare', 'interaction', 'between', 'correlated', 'states', 'inclusion', 'of', 'medium', 'effects', 'lead', 'to', 'a', 'large', 'increase', 'of', 'the', 'viscosity', 'at', 'densities', 'larger', 'than', 'sim', '01', 'fm3']] | [-0.10905554512888194, 0.17313945952535142, -0.12051253399252891, 0.05156101705133915, 0.0137000882178545, -0.04339639950171113, 0.05330432611051947, 0.29973944517970086, -0.2027811672091484, -0.3206310936510563, -0.008865401661954821, -0.3263068555444479, -0.06002214351296425, 0.16280598331801593, 0.07417703362368047, 0.03064917044667527, 0.043748418178613066, 0.0047321983650326725, -0.10842908307164907, -0.1873763070050627, 0.3586423743087798, 0.07955256609991193, 0.2587268526852131, 0.11193184595555067, 0.06838195120170712, 0.030150698855519294, -0.03358723252266645, 0.04626941595971584, -0.13150727985426783, 0.08149664020328783, 0.23145023597497494, -0.01156139835715294, 0.21625490333884956, -0.475613778501749, -0.23273443218087778, 0.053998409233987334, 0.12565534418821334, 0.08309898517932743, -0.05047815521992743, -0.28534110472910107, 0.018733178889146076, -0.2108819903228432, -0.16176573682948947, -0.06480226979963481, 0.03363337997882627, 0.021711343912407755, -0.239185128480196, 0.1311005556692835, 0.02467328223027289, 0.02395460772747174, -0.09916220226977021, -0.16747453141584992, -0.035837527899071575, 0.09267007745057344, 0.061676223217509686, 0.02759295185096562, 0.18433559601195157, -0.1860154292648658, -0.035866803903132675, 0.41424134700000287, -0.08291118222719523, -0.1612887551486492, 0.1539654427729547, -0.15773822129517795, -0.06952756352536381, 0.19751685677096248, 0.19585100306826644, 0.12783825783990324, -0.1477949705980718, 0.05423425819497788, -0.02352874380722642, 0.15290875615738334, 0.044269262002781036, 0.03891368870437145, 0.26085204481706026, 0.227684447477106, -0.01975789254345, 0.09030138861760498, -0.12005047563277185, -0.10900507712736726, -0.3168647158071399, -0.10991751536706579, -0.16418806244246661, 0.048041507091373205, -0.10105041535559577, -0.1414256088398397, 0.3378320401348174, 0.13752326548472046, 0.19370769043732433, -0.02911421816702932, 0.23742277836799622, 0.11988802634645253, 0.07956072772666813, 0.07169002653285861, 0.31017089838534595, 0.198259581560269, 0.07094899813644588, -0.2943039967417717, 0.05564723101258278, 0.06666196893155575] |
707.2682 | Localization and characterization of simple defects in finite-size
photonic crystals | Structured materials like photonic crystals require for optimal use a high
precision both on position and optical characteristics of the components which
they are made of. Here, we present a simple tomographic algorithm, based on a
specific Green's function together with a first-order Born approximation, which
enables us to localize and characterize identical defects in finite-size
photonic crystals. This algorithm is proposed as a first step to the monitoring
of such materials. Illustrative numerical results show in particular some
possibility of focalization beyond the Rayleigh criterion.
| physics.optics | structured materials like photonic crystals require for optimal use a high precision both on position and optical characteristics of the components which they are made of here we present a simple tomographic algorithm based on a specific greens function together with a firstorder born approximation which enables us to localize and characterize identical defects in finitesize photonic crystals this algorithm is proposed as a first step to the monitoring of such materials illustrative numerical results show in particular some possibility of focalization beyond the rayleigh criterion | [['structured', 'materials', 'like', 'photonic', 'crystals', 'require', 'for', 'optimal', 'use', 'a', 'high', 'precision', 'both', 'on', 'position', 'and', 'optical', 'characteristics', 'of', 'the', 'components', 'which', 'they', 'are', 'made', 'of', 'here', 'we', 'present', 'a', 'simple', 'tomographic', 'algorithm', 'based', 'on', 'a', 'specific', 'greens', 'function', 'together', 'with', 'a', 'firstorder', 'born', 'approximation', 'which', 'enables', 'us', 'to', 'localize', 'and', 'characterize', 'identical', 'defects', 'in', 'finitesize', 'photonic', 'crystals', 'this', 'algorithm', 'is', 'proposed', 'as', 'a', 'first', 'step', 'to', 'the', 'monitoring', 'of', 'such', 'materials', 'illustrative', 'numerical', 'results', 'show', 'in', 'particular', 'some', 'possibility', 'of', 'focalization', 'beyond', 'the', 'rayleigh', 'criterion']] | [-0.08659630176492122, 0.08494901749695283, -0.09913908566759769, 0.026294856310583824, -0.0896493497651157, -0.15927787379058467, 0.08905026709476789, 0.4373416313251784, -0.22918451196232506, -0.2774019514448767, 0.09794135346499727, -0.2614790936282208, -0.19296588124653194, 0.23136258874694968, -0.013789403663818227, 0.13142180413570861, 0.0335775627944142, -0.012182550808024962, -0.09858802294082464, -0.18992402289755816, 0.2598341804236, 0.04687811310814564, 0.2975804535293042, 0.044738639059454896, 0.11349404082884998, 0.03944160918661848, 0.00045477153278540735, 0.02843807599788835, -0.12736630744062538, 0.1196677058631944, 0.25155625740326076, 0.04960040541279108, 0.2651174594323302, -0.45057462842398605, -0.21510890619504416, 0.04855984086333232, 0.14741466432907294, 0.15692177753040004, -0.07882005188527495, -0.24697344376553976, 0.06822931889964398, -0.13844906924790595, -0.14525717207728778, -0.13423544999082074, -0.05625723048957974, 0.06470670253254993, -0.2659834651276469, 0.024959380446045204, 0.03278275734073548, 0.03472548734050158, -0.06142974415046791, -0.0823663447138875, 0.04014134673445031, 0.08776636044278222, -0.05408536804485308, -0.02796976296989204, 0.11990714089966617, -0.11179858650254129, -0.12347249242715365, 0.3994075171189209, -0.03092039956949478, -0.20021019313419455, 0.19705652057593906, -0.11799207311340196, -0.14854014217095493, 0.12577624099740628, 0.20861858698582753, 0.13241911373306933, -0.1280183108783392, 0.021799404145662435, -0.028758045740772124, 0.18410830407641654, 0.05487941513596059, 0.07749540452997006, 0.1816403445311237, 0.18019074464465903, 0.053108524581803915, 0.15973137906308524, -0.09903606966267837, -0.04474667448897001, -0.3039044510183293, -0.2046382433171709, -0.20905478568855934, 0.012998845639400358, -0.08353471981739181, -0.22867843497891066, 0.39573683137030796, 0.16814275525343134, 0.17011723825491445, 0.03530468319835098, 0.28124577972258247, 0.09583737135751086, 0.061099632681065864, 0.021484061268829676, 0.2472695235212382, 0.12861315239231688, 0.0785190638447137, -0.1924402685646444, 0.03603841678434333, 0.03476052023037229] |
707.2683 | Liquid-Solid Transition and Phase Diagram of ^4He Confined in Nanoporous
Glass | We have studied the liquid - solid (L-S) phase transition of ^4He confined in
nanoporous glass, which has interconnected nanopores of 2.5 nm in diameter. The
L-S boundary is determined by the measurements of pressure and thermal response
during slow cooling and warming. Below 1 K, the freezing pressure is elevated
to 1.2 MPa from the bulk freezing pressure, and appears to be independent of
temperature. The T-independent L-S boundary implies the existence of a
localized Bose-Einstein condensation state, in which long-range superfluid
coherence is destroyed by narrowness of the nanopores and random potential.
| cond-mat.mes-hall cond-mat.str-el | we have studied the liquid solid ls phase transition of 4he confined in nanoporous glass which has interconnected nanopores of 25 nm in diameter the ls boundary is determined by the measurements of pressure and thermal response during slow cooling and warming below 1 k the freezing pressure is elevated to 12 mpa from the bulk freezing pressure and appears to be independent of temperature the tindependent ls boundary implies the existence of a localized boseeinstein condensation state in which longrange superfluid coherence is destroyed by narrowness of the nanopores and random potential | [['we', 'have', 'studied', 'the', 'liquid', 'solid', 'ls', 'phase', 'transition', 'of', '4he', 'confined', 'in', 'nanoporous', 'glass', 'which', 'has', 'interconnected', 'nanopores', 'of', '25', 'nm', 'in', 'diameter', 'the', 'ls', 'boundary', 'is', 'determined', 'by', 'the', 'measurements', 'of', 'pressure', 'and', 'thermal', 'response', 'during', 'slow', 'cooling', 'and', 'warming', 'below', '1', 'k', 'the', 'freezing', 'pressure', 'is', 'elevated', 'to', '12', 'mpa', 'from', 'the', 'bulk', 'freezing', 'pressure', 'and', 'appears', 'to', 'be', 'independent', 'of', 'temperature', 'the', 'tindependent', 'ls', 'boundary', 'implies', 'the', 'existence', 'of', 'a', 'localized', 'boseeinstein', 'condensation', 'state', 'in', 'which', 'longrange', 'superfluid', 'coherence', 'is', 'destroyed', 'by', 'narrowness', 'of', 'the', 'nanopores', 'and', 'random', 'potential']] | [-0.13481401617298283, 0.33991766758563535, -0.06936203932479745, -0.05867837531797548, 0.03899197691991445, -0.1662919054819291, 0.0525265156281411, 0.35221471587416303, -0.26244408167618255, -0.25443111295481363, 0.11842318014016436, -0.29486995912908065, -0.02767480202069286, 0.08079246595697177, 0.011740836695397413, 0.04009430124474469, -0.04558278849068027, 0.018045686500807925, -0.10610734076509552, -0.19151362459305474, 0.24306014468592982, 0.03131557399687428, 0.2669239864153888, 0.1375916331946369, 0.055380669722874316, -0.08070708353633202, 0.13128611213097008, 0.04204458167516096, -0.19677115223741018, 0.0019458096915034838, 0.24485455289162616, -0.04338303415841105, 0.20059510357477653, -0.4316928776041154, -0.2721434309778194, 0.06643219091128358, 0.1067739166219228, 0.0674436642532988, -0.012809657401615573, -0.26446767479947375, 0.03869070392102003, -0.11307151970123092, -0.15931663374787056, -0.043688300105283705, 0.04082080048899497, 0.009555741711156644, -0.2199518717524986, 0.18231881739351377, 0.0866130165360187, 0.11131108074539131, -0.1295441201617641, -0.13795004381487766, -0.06652402501272899, 0.02519558152304061, 0.028139154769740597, 0.05676058325566031, 0.2406012592586859, -0.12357006737679463, 0.007988791186763074, 0.3354335007988798, -0.09855433817832701, -0.017941010851470592, 0.20802909171869677, -0.17040715063671752, -0.002028795489941233, 0.29941944273248794, 0.1121424383737938, 0.07585189899464728, -0.1360367869786788, 0.022075922571383015, 0.006156723428096983, 0.21654072632983087, 0.12114013121613572, -0.02458534805074094, 0.24889408588729878, 0.2457658984868597, 0.03272732598356582, 0.1896862069793266, -0.14337414505741913, -0.09437111400628603, -0.22849124895849376, -0.18946213238266726, -0.23888785943829566, 0.06208225934245493, -0.10182629374384139, -0.1668461172150508, 0.31274728408904484, 0.11378600613604631, 0.1696327892332388, -0.06304262036467673, 0.21908477493011022, 0.08294362352374861, 0.046116437457541945, 0.053386415883783574, 0.29914346118006974, 0.2255096782189143, 0.15176499750582823, -0.2879637449213694, 0.08721021152481997, 0.02643404675707702] |
707.2684 | Reply to Comment on 'Critical behaviour in the relaminarization of
localized turbulence in pipe flow' | This is a Reply to Comment arXiv:0707.2642 by Hof et al. on Letter
arXiv:physics/0608292 which was subsequently published in Phys Rev Lett, 98,
014501 (2007).
In our letter it was reported that in pipe flow the median time $\tau$ for
relaminarisation of localised turbulent disturbances closely follows the
scaling $\tau\sim 1/(Re_c-Re)$. This conclusion was based on data from
collections of 40 to 60 independent simulations at each of six different
Reynolds numbers, Re. In the Comment, Hof et al. estimate $\tau$ differently
for the point at lowest Re. Although this point is the most uncertain, it forms
the basis for their assertion that the data might then fit an exponential
scaling $\tau\sim \exp(A Re)$, for some constant A, supporting Hof et al.
(2006) Nature, 443, 59. The most certain point (at largest Re) does not fit
their conclusion and is rejected. We clarify why their argument for rejecting
this point is flawed. The median $\tau$ is estimated from the distribution of
observations, and it is shown that the correct part of the distribution is
used. The data is sufficiently well determined to show that the exponential
scaling cannot be fit to the data over this range of Re, whereas the $\tau\sim
1/(Re_c-Re)$ fit is excellent, indicating critical behaviour and supporting
experiments by Peixinho & Mullin 2006.
| physics.flu-dyn | this is a reply to comment arxiv07072642 by hof et al on letter arxivphysics0608292 which was subsequently published in phys rev lett 98 014501 2007 in our letter it was reported that in pipe flow the median time tau for relaminarisation of localised turbulent disturbances closely follows the scaling tausim 1re_cre this conclusion was based on data from collections of 40 to 60 independent simulations at each of six different reynolds numbers re in the comment hof et al estimate tau differently for the point at lowest re although this point is the most uncertain it forms the basis for their assertion that the data might then fit an exponential scaling tausim expa re for some constant a supporting hof et al 2006 nature 443 59 the most certain point at largest re does not fit their conclusion and is rejected we clarify why their argument for rejecting this point is flawed the median tau is estimated from the distribution of observations and it is shown that the correct part of the distribution is used the data is sufficiently well determined to show that the exponential scaling cannot be fit to the data over this range of re whereas the tausim 1re_cre fit is excellent indicating critical behaviour and supporting experiments by peixinho mullin 2006 | [['this', 'is', 'a', 'reply', 'to', 'comment', 'arxiv07072642', 'by', 'hof', 'et', 'al', 'on', 'letter', 'arxivphysics0608292', 'which', 'was', 'subsequently', 'published', 'in', 'phys', 'rev', 'lett', '98', '014501', '2007', 'in', 'our', 'letter', 'it', 'was', 'reported', 'that', 'in', 'pipe', 'flow', 'the', 'median', 'time', 'tau', 'for', 'relaminarisation', 'of', 'localised', 'turbulent', 'disturbances', 'closely', 'follows', 'the', 'scaling', 'tausim', '1re_cre', 'this', 'conclusion', 'was', 'based', 'on', 'data', 'from', 'collections', 'of', '40', 'to', '60', 'independent', 'simulations', 'at', 'each', 'of', 'six', 'different', 'reynolds', 'numbers', 're', 'in', 'the', 'comment', 'hof', 'et', 'al', 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707.2685 | The surface brightness profile of the remote cluster NGC 2419 | It is well known that the bright and remote Galactic globular cluster NGC2419
has a very peculiar structure. In particular its half-light radius is
significantly larger than that of ordinary globular clusters of similar
luminosity, being as large as that of the brightest nuclei of dwarf elliptical
galaxies. In this context it is particularly worth to check the reliability of
the existing surface brightness profiles for this cluster and of the available
estimates of its structural parameters. Combining different datasets I derive
the surface brightness profile going from the cluster center out to ~ 480
arcsec, i.e. ~25 core radii. (Abridged). The newly obtained surface brightness
profile is in excellent agreement with that provided by Trager, King &
Djorgovski for r>= 4 arcsec; it is best fitted by a King model having r_c=0.32
arcmin, mu_V(0)=19.55 and C=1.35. Also new independent estimates of the total
integrated V magnitude (V_t=10.47 +/- 0.07) and of the half-light radius
(r_h=0.96 arcmin +/- 0.2 arcmin) have been obtained. (Abridged). The structure
of NGC2419 is now reliably constrained by (at least) two fully independent
observational profiles that are in good agreement one with the other. Also the
overall agreement between structural parameters independently obtained by
different authors is quite satisfying.
| astro-ph | it is well known that the bright and remote galactic globular cluster ngc2419 has a very peculiar structure in particular its halflight radius is significantly larger than that of ordinary globular clusters of similar luminosity being as large as that of the brightest nuclei of dwarf elliptical galaxies in this context it is particularly worth to check the reliability of the existing surface brightness profiles for this cluster and of the available estimates of its structural parameters combining different datasets i derive the surface brightness profile going from the cluster center out to 480 arcsec ie 25 core radii abridged the newly obtained surface brightness profile is in excellent agreement with that provided by trager king djorgovski for r 4 arcsec it is best fitted by a king model having r_c032 arcmin mu_v01955 and c135 also new independent estimates of the total integrated v magnitude v_t1047 007 and of the halflight radius r_h096 arcmin 02 arcmin have been obtained abridged the structure of ngc2419 is now reliably constrained by at least two fully independent observational profiles that are in good agreement one with the other also the overall agreement between structural parameters independently obtained by different authors is quite satisfying | [['it', 'is', 'well', 'known', 'that', 'the', 'bright', 'and', 'remote', 'galactic', 'globular', 'cluster', 'ngc2419', 'has', 'a', 'very', 'peculiar', 'structure', 'in', 'particular', 'its', 'halflight', 'radius', 'is', 'significantly', 'larger', 'than', 'that', 'of', 'ordinary', 'globular', 'clusters', 'of', 'similar', 'luminosity', 'being', 'as', 'large', 'as', 'that', 'of', 'the', 'brightest', 'nuclei', 'of', 'dwarf', 'elliptical', 'galaxies', 'in', 'this', 'context', 'it', 'is', 'particularly', 'worth', 'to', 'check', 'the', 'reliability', 'of', 'the', 'existing', 'surface', 'brightness', 'profiles', 'for', 'this', 'cluster', 'and', 'of', 'the', 'available', 'estimates', 'of', 'its', 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'the', 'other', 'also', 'the', 'overall', 'agreement', 'between', 'structural', 'parameters', 'independently', 'obtained', 'by', 'different', 'authors', 'is', 'quite', 'satisfying']] | [-0.026465011382093413, 0.0621275585049238, -0.09920850170489687, 0.08888990610228995, -0.06528298342481065, -0.12224957653536246, 0.025744732656778815, 0.41370050666423946, -0.17268030076430968, -0.40046857053366225, 0.07584837957595786, -0.310791397612924, -0.028515938870035683, 0.20856357012063456, -0.052556514949537815, 0.00417651371158755, 0.07255616817494276, -0.014352609011798334, -0.08357465012858693, -0.28875869122596504, 0.2671346325331774, 0.09886206170687309, 0.1973298061898766, -0.03940900400137672, 0.05403495624374885, -0.04821205642313147, -0.04941188806387333, 0.054655268302378365, -0.16086754453796087, 0.07429518502784702, 0.22663344524394816, 0.10761393329825622, 0.20342422568788512, -0.3349155996567928, -0.20128183696801083, 0.036047886778266196, 0.19825903099173536, 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707.2686 | Observational constraints on the linear fluctuation growth rate | Several experiments in the near future will test dark energy through its
effects on the linear growth of matter perturbations. It is therefore important
to find simple and at the same time general parametrizations of the linear
growth rate. We show that a simple fitting formula that generalizes previous
expressions reproduces the growth function in models that allow for a growth
faster than standard, as for instance in scalar-tensor models. We use data from
galaxy and Lyman-$\alpha$ power spectra to constrain the linear growth rate. We
find $\gamma=0.6_{-0.3}^{+0.4}$ for the growth rate index and
$\eta=0.0_{-0.2}^{+0.3}$ for the additional growth parameter we introduce.
| astro-ph | several experiments in the near future will test dark energy through its effects on the linear growth of matter perturbations it is therefore important to find simple and at the same time general parametrizations of the linear growth rate we show that a simple fitting formula that generalizes previous expressions reproduces the growth function in models that allow for a growth faster than standard as for instance in scalartensor models we use data from galaxy and lymanalpha power spectra to constrain the linear growth rate we find gamma06_0304 for the growth rate index and eta00_0203 for the additional growth parameter we introduce | [['several', 'experiments', 'in', 'the', 'near', 'future', 'will', 'test', 'dark', 'energy', 'through', 'its', 'effects', 'on', 'the', 'linear', 'growth', 'of', 'matter', 'perturbations', 'it', 'is', 'therefore', 'important', 'to', 'find', 'simple', 'and', 'at', 'the', 'same', 'time', 'general', 'parametrizations', 'of', 'the', 'linear', 'growth', 'rate', 'we', 'show', 'that', 'a', 'simple', 'fitting', 'formula', 'that', 'generalizes', 'previous', 'expressions', 'reproduces', 'the', 'growth', 'function', 'in', 'models', 'that', 'allow', 'for', 'a', 'growth', 'faster', 'than', 'standard', 'as', 'for', 'instance', 'in', 'scalartensor', 'models', 'we', 'use', 'data', 'from', 'galaxy', 'and', 'lymanalpha', 'power', 'spectra', 'to', 'constrain', 'the', 'linear', 'growth', 'rate', 'we', 'find', 'gamma06_0304', 'for', 'the', 'growth', 'rate', 'index', 'and', 'eta00_0203', 'for', 'the', 'additional', 'growth', 'parameter', 'we', 'introduce']] | [-0.054333168717566875, 0.07156799156568013, -0.09203720540739596, 0.10456692558364011, -0.08738522453233599, -0.10190143071580678, -0.01564363666344434, 0.3290508692758158, -0.2460075830621645, -0.27860358158592136, 0.10601530433283188, -0.2620617556804791, -0.12807267989963292, 0.2894627698883414, 0.011303250435739756, 0.05412524563202169, 0.012312355374451727, 0.01911441031610593, -0.05934639265527949, -0.2644890513154678, 0.3048059330228716, 0.1115368197672069, 0.2731881662667729, 0.02614980667363852, 0.0709459895559121, -0.0019848323916085066, -0.028328786892816423, -0.012963907103985548, -0.23448855659305992, 0.07718027713242918, 0.1929337730435509, 0.15896587698254735, 0.23013771884376183, -0.4275764830736443, -0.24555491325445472, 0.11152050611563027, 0.12252406612969935, 0.14454681491828525, -0.10435705075622537, -0.14365653686225413, 0.08764809568907367, -0.18149732368066906, -0.13423221903154625, -0.05642560671083629, 0.01598687969148159, 0.022795309351640754, -0.31916521188803015, 0.14492588980821894, 0.02362556210719049, -0.010377918891608716, -0.09399148102966137, -0.06516369556891732, -0.03276118100620806, 0.07297718556132167, 0.05670036252355203, -0.025184500738978387, 0.1264331629918888, -0.1652987462002784, -0.08159847462549806, 0.37332056716084483, -0.159778845897672, -0.15413156048394738, 0.19553795589134096, -0.19880485358648003, -0.1569322401913814, 0.07448297126451507, 0.2235372081398964, 0.09518679801374674, -0.10615529722999781, 0.09529319235880393, 0.000764082232490182, 0.188208527083043, 0.061121231315191836, 0.008995842417498352, 0.21115923842415213, 0.1517812432581559, 0.07353693806566299, 0.11857220144942403, -0.07166371783940122, -0.06910570753738284, -0.2995332944300026, -0.15521237490698694, -0.13387062376365066, 0.03001210858579725, -0.1414694352769584, -0.127005659758579, 0.4157843736931682, 0.14199914837721736, 0.23419996994547546, 0.141906568959821, 0.28491637490689753, 0.14198435924365185, 0.10651741875335574, 0.07950944546260871, 0.26856775986030695, 0.07437850580783562, 0.060620768079534176, -0.23187085163081064, 0.09096391413360834, 0.023121541664004326] |
707.2687 | Search for the K(S) --> e+e- decay with the KLOE detector at DAFNE | We present results of a direct search for the decay KS --> e+e- with the KLOE
detector, obtained with a sample of e+e- --> phi --> KSKL events produced at
DAFNE, the Frascati phi-factory, for an integrated luminosity of 1.3fb-1. The
Standard Model prediction for this decay is BR(KS --> e+e-) = 1.6*10^-15. The
search has been performed tagging the KS decays by simultaneous detection of a
KL interaction in the calorimeter. Background rejection has been optimized by
using both kinematic cuts and particle identification. At the end of the
analysis chain we find BR(KS --> e+e-) < 2.1*10^-8 at 90% CL, which improves by
a factor of ~7 on the previous best result, obtained by CPLEAR experiment.
| hep-ex | we present results of a direct search for the decay ks ee with the kloe detector obtained with a sample of ee phi kskl events produced at dafne the frascati phifactory for an integrated luminosity of 13fb1 the standard model prediction for this decay is brks ee 161015 the search has been performed tagging the ks decays by simultaneous detection of a kl interaction in the calorimeter background rejection has been optimized by using both kinematic cuts and particle identification at the end of the analysis chain we find brks ee 21108 at 90 cl which improves by a factor of 7 on the previous best result obtained by cplear experiment | [['we', 'present', 'results', 'of', 'a', 'direct', 'search', 'for', 'the', 'decay', 'ks', 'ee', 'with', 'the', 'kloe', 'detector', 'obtained', 'with', 'a', 'sample', 'of', 'ee', 'phi', 'kskl', 'events', 'produced', 'at', 'dafne', 'the', 'frascati', 'phifactory', 'for', 'an', 'integrated', 'luminosity', 'of', '13fb1', 'the', 'standard', 'model', 'prediction', 'for', 'this', 'decay', 'is', 'brks', 'ee', '161015', 'the', 'search', 'has', 'been', 'performed', 'tagging', 'the', 'ks', 'decays', 'by', 'simultaneous', 'detection', 'of', 'a', 'kl', 'interaction', 'in', 'the', 'calorimeter', 'background', 'rejection', 'has', 'been', 'optimized', 'by', 'using', 'both', 'kinematic', 'cuts', 'and', 'particle', 'identification', 'at', 'the', 'end', 'of', 'the', 'analysis', 'chain', 'we', 'find', 'brks', 'ee', '21108', 'at', '90', 'cl', 'which', 'improves', 'by', 'a', 'factor', 'of', '7', 'on', 'the', 'previous', 'best', 'result', 'obtained', 'by', 'cplear', 'experiment']] | [-0.05069490394089371, 0.07267330849181572, -0.10980189270641724, 0.043601536036779485, 0.003454993116772837, -0.12203312831654868, 0.06582310533094979, 0.3292599977166564, -0.15112336463978324, -0.343926002075831, 0.034010217377389955, -0.36812312014538934, 0.04491744407763084, 0.19504013610249213, 0.11753415665589273, 0.12054171546845248, 0.1489939216731323, 0.03561955520503775, -0.050459439886725264, -0.20517868831477784, 0.21036696275997976, 0.1968860271455789, 0.2608393188781553, 0.04628258505060027, 0.09592254086250991, 0.05135993064053495, -0.09735512875313698, -0.03045787109941658, -0.1324925156249837, 0.061008312497977855, 0.225748850289771, 0.1650160499158557, 0.18008199692013915, -0.3200321062464624, -0.11263121294582056, 0.1277001869942372, 0.14471383867957802, 0.0028685241823377845, -0.09212115370448576, -0.3612577697020714, 0.12513620873344028, -0.1688973236165044, -0.04604364613812693, 0.01886992661618731, 0.0028624954521311104, -0.04956673599641632, -0.31774828099231756, 0.04538083170902812, 0.0008746136124871016, 0.06253588966231931, -0.013700549576983408, -0.17747928250011885, 0.04070172105760624, 0.011939153126958344, 0.0398129399540334, 0.09710153350412536, 0.148078838065784, -0.1317136964514955, -0.18777445764970724, 0.30324522669737536, -0.09883233280076335, -0.10647548941886742, 0.18689713835785235, -0.175907694868295, -0.13283382657122006, 0.19723971377782248, 0.19724152543306075, 0.06933516196699606, -0.24763074774657273, 0.1214131939745534, -0.007002225757955953, 0.15686963279559105, 0.08257583301962802, -0.002267705923360255, 0.15989953788273312, 0.26629301864671073, 0.01871401941267929, 0.149849215287422, -0.1774924816154116, 0.002079847531772598, -0.3575236563467317, -0.13900797164037446, -0.10166390341085692, 0.047126816227790656, -0.031103563226174122, -0.035061458582748416, 0.38141074333408914, 0.04667092223113051, 0.25338582373957186, 0.03605105609878794, 0.2888701339338527, 0.132139611609832, 0.05819113352077289, 0.045908468654724185, 0.3620254864347064, 0.07043258294827494, 0.11122960272607291, -0.24407214526932133, 0.031303038842182745, 0.026506085302335797] |
707.2688 | Hall magnetohydrodynamics of partially ionized plasmas | The Hall effect arises in a plasma when electrons are able to drift with the
magnetic field but ions cannot. In a fully-ionized plasma this occurs for
frequencies between the ion and electron cyclotron frequencies because of the
larger ion inertia. Typically this frequency range lies well above the
frequencies of interest (such as the dynamical frequency of the system under
consideration) and can be ignored. In a weakly-ionized medium, however, the
Hall effect arises through a different mechanism -- neutral collisions
preferentially decouple ions from the magnetic field. This typically occurs at
much lower frequencies and the Hall effect may play an important role in the
dynamics of weakly-ionised systems such as the Earth's ionosphere and
protoplanetary discs.
To clarify the relationship between these mechanisms we develop an
approximate single-fluid description of a partially ionized plasma that becomes
exact in the fully-ionized and weakly-ionized limits. Our treatment includes
the effects of ohmic, ambipolar, and Hall diffusion. We show that the Hall
effect is relevant to the dynamics of a partially ionized medium when the
dynamical frequency exceeds the ratio of ion to bulk mass density times the
ion-cyclotron frequency, i.e. the Hall frequency. The corresponding length
scale is inversely proportional to the ion to bulk mass density ratio as well
as to the ion-Hall beta parameter.
| astro-ph | the hall effect arises in a plasma when electrons are able to drift with the magnetic field but ions cannot in a fullyionized plasma this occurs for frequencies between the ion and electron cyclotron frequencies because of the larger ion inertia typically this frequency range lies well above the frequencies of interest such as the dynamical frequency of the system under consideration and can be ignored in a weaklyionized medium however the hall effect arises through a different mechanism neutral collisions preferentially decouple ions from the magnetic field this typically occurs at much lower frequencies and the hall effect may play an important role in the dynamics of weaklyionised systems such as the earths ionosphere and protoplanetary discs to clarify the relationship between these mechanisms we develop an approximate singlefluid description of a partially ionized plasma that becomes exact in the fullyionized and weaklyionized limits our treatment includes the effects of ohmic ambipolar and hall diffusion we show that the hall effect is relevant to the dynamics of a partially ionized medium when the dynamical frequency exceeds the ratio of ion to bulk mass density times the ioncyclotron frequency ie the hall frequency the corresponding length scale is inversely proportional to the ion to bulk mass density ratio as well as to the ionhall beta parameter | [['the', 'hall', 'effect', 'arises', 'in', 'a', 'plasma', 'when', 'electrons', 'are', 'able', 'to', 'drift', 'with', 'the', 'magnetic', 'field', 'but', 'ions', 'can', 'not', 'in', 'a', 'fullyionized', 'plasma', 'this', 'occurs', 'for', 'frequencies', 'between', 'the', 'ion', 'and', 'electron', 'cyclotron', 'frequencies', 'because', 'of', 'the', 'larger', 'ion', 'inertia', 'typically', 'this', 'frequency', 'range', 'lies', 'well', 'above', 'the', 'frequencies', 'of', 'interest', 'such', 'as', 'the', 'dynamical', 'frequency', 'of', 'the', 'system', 'under', 'consideration', 'and', 'can', 'be', 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707.2689 | Long-Time Behavior of Velocity Autocorrelation Function for Interacting
Particles in a Two-Dimensional Disordered System | The long-time behavior of the velocity autocorrelation function (VACF) is
investigated by the molecular dynamics simulation of a two-dimensional system
which has both a many-body interaction and a random potential. With
strengthening the random potential by increasing the density of impurities, a
crossover behavior of the VACF is observed from a positive tail, which is
proportional to t^{-1}, to a negative tail, proportional to -t^{-2}. The latter
tail exists even when the density of particles is the same order as the density
of impurities. The behavior of the VACF in a nonequilibrium steady state is
also studied. In the linear response regime the behavior is similar to that in
the equilibrium state, whereas it changes drastically in the nonlinear response
regime.
| cond-mat.stat-mech | the longtime behavior of the velocity autocorrelation function vacf is investigated by the molecular dynamics simulation of a twodimensional system which has both a manybody interaction and a random potential with strengthening the random potential by increasing the density of impurities a crossover behavior of the vacf is observed from a positive tail which is proportional to t1 to a negative tail proportional to t2 the latter tail exists even when the density of particles is the same order as the density of impurities the behavior of the vacf in a nonequilibrium steady state is also studied in the linear response regime the behavior is similar to that in the equilibrium state whereas it changes drastically in the nonlinear response regime | [['the', 'longtime', 'behavior', 'of', 'the', 'velocity', 'autocorrelation', 'function', 'vacf', 'is', 'investigated', 'by', 'the', 'molecular', 'dynamics', 'simulation', 'of', 'a', 'twodimensional', 'system', 'which', 'has', 'both', 'a', 'manybody', 'interaction', 'and', 'a', 'random', 'potential', 'with', 'strengthening', 'the', 'random', 'potential', 'by', 'increasing', 'the', 'density', 'of', 'impurities', 'a', 'crossover', 'behavior', 'of', 'the', 'vacf', 'is', 'observed', 'from', 'a', 'positive', 'tail', 'which', 'is', 'proportional', 'to', 't1', 'to', 'a', 'negative', 'tail', 'proportional', 'to', 't2', 'the', 'latter', 'tail', 'exists', 'even', 'when', 'the', 'density', 'of', 'particles', 'is', 'the', 'same', 'order', 'as', 'the', 'density', 'of', 'impurities', 'the', 'behavior', 'of', 'the', 'vacf', 'in', 'a', 'nonequilibrium', 'steady', 'state', 'is', 'also', 'studied', 'in', 'the', 'linear', 'response', 'regime', 'the', 'behavior', 'is', 'similar', 'to', 'that', 'in', 'the', 'equilibrium', 'state', 'whereas', 'it', 'changes', 'drastically', 'in', 'the', 'nonlinear', 'response', 'regime']] | [-0.1416865218784814, 0.19382592932559733, -0.15057443571084542, 0.05394494664385792, 0.026392009359407276, -0.11894797812762463, 0.0024407569469098956, 0.30282625308152566, -0.2746422094531542, -0.22861658545472652, 0.07163672281182872, -0.32458066884890074, -0.14897142433799987, 0.11445383196465733, 0.04922498235371241, 0.05997235466502915, -0.034750462498146395, 0.057257093156279984, -0.059873793701341084, -0.18966885645920026, 0.28509777499274314, 0.06934182798443747, 0.305190268888577, 0.05556186754641331, 0.06589998859404163, -0.0023702470535674125, 0.09406955573084372, 0.08166771107314785, -0.11023937829166183, 0.02383334768801583, 0.18319911231942984, -0.01410394191957456, 0.2981250792249175, -0.3807127962181391, -0.23677937528657272, 0.08079386881190884, 0.14716970250741693, 0.10476138368672268, -0.045442449979576444, -0.25612138768981313, 0.031222639133969, -0.1595534968059048, -0.18009275976137434, -0.022055708847493548, 0.0918850635971166, 0.08117335828498376, -0.28003464465237354, 0.15015601554345762, 0.07509624882993743, 0.00901011020437745, -0.06209223818280234, -0.06751603050030429, -0.021472141673896186, 0.1253176201589517, 0.094604759294278, 0.043578460262241686, 0.1615726760942643, -0.2015071944987848, -0.028504602103070778, 0.36000417423827097, -0.13699043150086818, -0.1614147068948046, 0.2023787191753422, -0.21792450432149954, -0.04518415409232651, 0.18373336922184927, 0.13250859518158287, 0.09284566474062475, -0.14996454547496593, 0.08753437700263833, -0.031013728880462013, 0.1827979771004728, 0.001583459048170196, 0.011889662010564414, 0.17325258546716665, 0.15806251214980724, 0.0847555276791542, 0.18264621332257, -0.10213461376087786, -0.1426204024767888, -0.26892425293056677, -0.14098853249225982, -0.25171565212124636, 0.0712237334771713, -0.07479239877470681, -0.19675253111915278, 0.4243902398411893, 0.10954184618716951, 0.2290791247063124, 0.07314434924647828, 0.25470293786911646, 0.2006908933904353, 0.026664935625812486, 0.05046915580433878, 0.22500366018700205, 0.14744240534684258, 0.12473691200976036, -0.31820558837984403, 0.14707878931071455, 0.008085944737915782] |
707.269 | Evidence for non-Gaussian tail in 3D pion emission source at the SPS | The NA49 experiment at CERN SPS has acquired a huge data set of Pb+Pb events
over a broad range of energy and centrality during the last several years. This
high statistics data set, coupled with a state-of-the-art analysis technique,
allows for the first model-independent extraction and energy scan of 3D
emission sources for pion pairs at SPS energies. These 3D pion emission sources
provide new insights into the nature of a long-range source previously reported
by PHENIX at RHIC. The new results indicate that the pion source displays
significant non-Gaussian tails in the longitudinal direction at 40 and 158 AGeV
and in the outward direction at 158 AGeV.
| nucl-ex | the na49 experiment at cern sps has acquired a huge data set of pbpb events over a broad range of energy and centrality during the last several years this high statistics data set coupled with a stateoftheart analysis technique allows for the first modelindependent extraction and energy scan of 3d emission sources for pion pairs at sps energies these 3d pion emission sources provide new insights into the nature of a longrange source previously reported by phenix at rhic the new results indicate that the pion source displays significant nongaussian tails in the longitudinal direction at 40 and 158 agev and in the outward direction at 158 agev | [['the', 'na49', 'experiment', 'at', 'cern', 'sps', 'has', 'acquired', 'a', 'huge', 'data', 'set', 'of', 'pbpb', 'events', 'over', 'a', 'broad', 'range', 'of', 'energy', 'and', 'centrality', 'during', 'the', 'last', 'several', 'years', 'this', 'high', 'statistics', 'data', 'set', 'coupled', 'with', 'a', 'stateoftheart', 'analysis', 'technique', 'allows', 'for', 'the', 'first', 'modelindependent', 'extraction', 'and', 'energy', 'scan', 'of', '3d', 'emission', 'sources', 'for', 'pion', 'pairs', 'at', 'sps', 'energies', 'these', '3d', 'pion', 'emission', 'sources', 'provide', 'new', 'insights', 'into', 'the', 'nature', 'of', 'a', 'longrange', 'source', 'previously', 'reported', 'by', 'phenix', 'at', 'rhic', 'the', 'new', 'results', 'indicate', 'that', 'the', 'pion', 'source', 'displays', 'significant', 'nongaussian', 'tails', 'in', 'the', 'longitudinal', 'direction', 'at', '40', 'and', '158', 'agev', 'and', 'in', 'the', 'outward', 'direction', 'at', '158', 'agev']] | [-0.02848390949441603, 0.1597855445213133, -0.1423321294779372, 0.09155910763419578, -0.012157734440363667, -0.1037113483514447, 0.007348106656637456, 0.37593826424778887, -0.19093281428191672, -0.33575841840097886, -0.04886285033878974, -0.39290792758253734, 0.0942156339512655, 0.23283550793443014, 0.09086752022375111, 0.07230556471687224, 0.1624119740013999, -0.03039705475950743, -0.047863372909853714, -0.16601812845544406, 0.29044388097072776, 0.1566095416761797, 0.3175298565765843, 0.17098575436587757, 0.10842104433147513, 0.017595047795179265, -0.056367422057384695, -0.0339713800963687, -0.10431701695381855, 0.07288814552507743, 0.2990109077654779, 0.08087121848775833, 0.20923419433852863, -0.3248804056051153, -0.1910744974674243, 0.07388545928902372, 0.11966830064840098, 0.09585353681015679, -0.09896196769895377, -0.29798116161988153, 0.09656274695859153, -0.20337401007519576, -0.12702456267153914, -0.017500315332586912, 0.02471027749642316, 0.015812170614177983, -0.2705381854213084, 0.12741385505500216, -0.04894610470876581, 0.14231510289634267, -0.058589204318532546, -0.18495387957362389, -0.0003929436422401556, 0.04501295963267761, 0.04806567663305301, 0.11963531061041134, 0.14622078961865217, -0.1245386037367603, -0.15833559468457545, 0.35779131140292586, -0.009233840626957654, -0.03863110482968666, 0.19838169661212574, -0.23017337156839116, -0.17699914592904625, 0.2529757432984533, 0.2585650223600506, 0.06644008920907422, -0.22736790127129536, -0.018690473091771343, -0.010009839604781181, 0.19722540938743838, 0.10924292300370764, 0.03704868504104929, 0.24146668170578778, 0.20396861111469292, 0.004048183540968846, 0.10714924226825435, -0.19733190884572752, -0.05691891717207101, -0.353158381901233, -0.04586899446116553, -0.12134424143867498, 0.006581309019734531, -0.08622357492384725, -0.02735617954641822, 0.43915694840662006, 0.12818854939952737, 0.24710107457617092, 0.003493115292965538, 0.2904701168881729, 0.038501886118697086, 0.08812366651923016, 0.09902098143680228, 0.261862274793977, 0.07773880283477613, 0.2762441002813392, -0.18894160701030935, 0.010996698525829103, -0.01868401613103709] |
707.2691 | Neon and Argon optical emission lines in ionized gaseous nebulae:
Implications and applications | In this work we present a study of the strong optical collisional emission
lines of Ne and Ar in an heterogeneous sample of ionized gaseous nebulae for
which it is possible to derive directly the electron temperature and hence the
chemical abundances of neon and argon. We calculate using a grid of
photoionization models new ionization correction factors for these two elements
and we study the behaviour of Ne/O and Ar/O abundance ratios with metallicity.
We find a constant value for Ne/O, while there seems to be some evidence for
the existence of negative radial gradients of Ar/O over the disks of some
nearby spirals. We study the relation between the intensities of the emission
lines of [NeIII] at 3869 \AA and [OIII] at 4959 \AA and 5007 \AA. This relation
can be used in empirical calibrations and diagnostic ratios extending their
applicability to bluer wavelengths and therefore to samples of objects at
higher redshifts. Finally, we propose a new diagnostic using [OII], [NeIII] and
Hdelta emission lines to derive metallicities for galaxies at high z.
| astro-ph | in this work we present a study of the strong optical collisional emission lines of ne and ar in an heterogeneous sample of ionized gaseous nebulae for which it is possible to derive directly the electron temperature and hence the chemical abundances of neon and argon we calculate using a grid of photoionization models new ionization correction factors for these two elements and we study the behaviour of neo and aro abundance ratios with metallicity we find a constant value for neo while there seems to be some evidence for the existence of negative radial gradients of aro over the disks of some nearby spirals we study the relation between the intensities of the emission lines of neiii at 3869 aa and oiii at 4959 aa and 5007 aa this relation can be used in empirical calibrations and diagnostic ratios extending their applicability to bluer wavelengths and therefore to samples of objects at higher redshifts finally we propose a new diagnostic using oii neiii and hdelta emission lines to derive metallicities for galaxies at high z | [['in', 'this', 'work', 'we', 'present', 'a', 'study', 'of', 'the', 'strong', 'optical', 'collisional', 'emission', 'lines', 'of', 'ne', 'and', 'ar', 'in', 'an', 'heterogeneous', 'sample', 'of', 'ionized', 'gaseous', 'nebulae', 'for', 'which', 'it', 'is', 'possible', 'to', 'derive', 'directly', 'the', 'electron', 'temperature', 'and', 'hence', 'the', 'chemical', 'abundances', 'of', 'neon', 'and', 'argon', 'we', 'calculate', 'using', 'a', 'grid', 'of', 'photoionization', 'models', 'new', 'ionization', 'correction', 'factors', 'for', 'these', 'two', 'elements', 'and', 'we', 'study', 'the', 'behaviour', 'of', 'neo', 'and', 'aro', 'abundance', 'ratios', 'with', 'metallicity', 'we', 'find', 'a', 'constant', 'value', 'for', 'neo', 'while', 'there', 'seems', 'to', 'be', 'some', 'evidence', 'for', 'the', 'existence', 'of', 'negative', 'radial', 'gradients', 'of', 'aro', 'over', 'the', 'disks', 'of', 'some', 'nearby', 'spirals', 'we', 'study', 'the', 'relation', 'between', 'the', 'intensities', 'of', 'the', 'emission', 'lines', 'of', 'neiii', 'at', '3869', 'aa', 'and', 'oiii', 'at', '4959', 'aa', 'and', '5007', 'aa', 'this', 'relation', 'can', 'be', 'used', 'in', 'empirical', 'calibrations', 'and', 'diagnostic', 'ratios', 'extending', 'their', 'applicability', 'to', 'bluer', 'wavelengths', 'and', 'therefore', 'to', 'samples', 'of', 'objects', 'at', 'higher', 'redshifts', 'finally', 'we', 'propose', 'a', 'new', 'diagnostic', 'using', 'oii', 'neiii', 'and', 'hdelta', 'emission', 'lines', 'to', 'derive', 'metallicities', 'for', 'galaxies', 'at', 'high', 'z']] | [-0.0007067633401179178, 0.06750380523598407, -0.01435703894821927, 0.09313880357645261, -0.002891867477790749, -0.11251686763187702, 0.06396195586289237, 0.5182403208031743, -0.13830149118174714, -0.3106943487073295, 0.0018972459372228266, -0.2887805504406887, 0.0019345122722866522, 0.15801475173694515, -0.008072614200169814, -0.03922938189366092, -0.004630906741526401, -0.145091166066281, -0.05765051894261639, -0.21570001238433179, 0.310668237255992, 0.07226398160458881, 0.17423661376233213, 0.06624075738496189, 0.02376125254059761, -0.13146352913992648, -0.05697900098378093, 0.026351731484861706, -0.18208458650124984, 0.0964833533613604, 0.25420630415624146, 0.152072371677522, 0.20864397543482482, -0.3155890004108683, -0.15770116519574498, 0.08794926139208573, 0.1949755051239415, 0.06726883890554415, -0.05689897784561088, -0.23982472263213078, 0.04814086580617269, -0.14041942181938794, -0.1729855633192611, 0.03466138588158752, 0.07375875497977673, 0.0567875175121034, -0.28458079836987465, 0.08711899890543216, -0.01214987898592054, 0.16840566880471836, -0.09100766516745683, -0.13412163233707278, -0.05755310314733916, 0.07486492489062418, -0.0061412122463066635, -0.010467841477789492, 0.16721535039356572, -0.12854941246703014, -0.0258784034231212, 0.40383181264835666, -0.14062767077550895, -0.006428389958190647, 0.25255924999840895, -0.18347920275846263, -0.17469813151745422, 0.17577222296544773, 0.1612480315908959, 0.13925567067715086, -0.1312641440493859, -0.0030605700085288845, -0.021499792957911268, 0.19458075260627083, 0.06784515830010852, 0.08116042956217742, 0.2549962984326571, 0.03372064431261441, 0.020110393317736452, 0.08235153938816935, -0.2300999957898801, 0.01198731371385458, -0.26644497125396976, -0.1979759615999435, -0.050376104709522966, 0.07256343381992668, -0.11578565439032734, -0.1677670242021453, 0.3267529997313183, 0.15324947999165903, 0.2311452928380194, 0.06411622943613277, 0.2915239322015127, 0.1441772829804739, 0.07249845315792217, 0.07610801453913817, 0.2970562654098268, 0.19132940207121216, 0.11757526145414555, -0.2674159887537826, 0.08846316955697892, 0.04365287179296667] |
707.2692 | Flat rotation curves using scalar-tensor theories | We computed flat rotation curves from scalar-tensor theories in their weak
field limit. Our model, by construction, fits a flat rotation profile for
velocities of stars. As a result, the form of the scalar field potential and DM
distribution in a galaxy are determined. By taking into account the constraints
for the fundamental parameters of the theory $(\lambda, \alpha)$, it is
possible to obtain analytical results for the density profiles. For positive
and negative values of $\alpha$, the DM matter profile is as cuspy as NFW's.
| astro-ph | we computed flat rotation curves from scalartensor theories in their weak field limit our model by construction fits a flat rotation profile for velocities of stars as a result the form of the scalar field potential and dm distribution in a galaxy are determined by taking into account the constraints for the fundamental parameters of the theory lambda alpha it is possible to obtain analytical results for the density profiles for positive and negative values of alpha the dm matter profile is as cuspy as nfws | [['we', 'computed', 'flat', 'rotation', 'curves', 'from', 'scalartensor', 'theories', 'in', 'their', 'weak', 'field', 'limit', 'our', 'model', 'by', 'construction', 'fits', 'a', 'flat', 'rotation', 'profile', 'for', 'velocities', 'of', 'stars', 'as', 'a', 'result', 'the', 'form', 'of', 'the', 'scalar', 'field', 'potential', 'and', 'dm', 'distribution', 'in', 'a', 'galaxy', 'are', 'determined', 'by', 'taking', 'into', 'account', 'the', 'constraints', 'for', 'the', 'fundamental', 'parameters', 'of', 'the', 'theory', 'lambda', 'alpha', 'it', 'is', 'possible', 'to', 'obtain', 'analytical', 'results', 'for', 'the', 'density', 'profiles', 'for', 'positive', 'and', 'negative', 'values', 'of', 'alpha', 'the', 'dm', 'matter', 'profile', 'is', 'as', 'cuspy', 'as', 'nfws']] | [-0.10664633801206946, 0.11241413391578724, -0.1216197772335042, 0.11902221264043714, -0.08159576130702215, -0.12788480621598222, 9.222955799058957e-05, 0.3404855710618636, -0.1941972877501565, -0.3497930183979299, 0.028546078725005773, -0.23325349166989326, -0.05994242644485305, 0.2179364485310062, 0.03246589736355578, 0.01706153828092604, -0.021693263600087342, 0.03524565707125208, -0.05414093249984195, -0.21681668578154023, 0.3438922627171611, 0.025976013512734104, 0.19876810299123035, -0.0004892982816433205, 0.05771806941860739, -0.015535946880631587, -0.02160252944621093, 0.05270004956161275, -0.2005565885635887, 0.07023668868864394, 0.17045435596476582, 0.11935011734638144, 0.17406335722874192, -0.3576068635810824, -0.2627321679223849, 0.08088594589053708, 0.14158114416196066, 0.1061486463610302, -0.07715383843683145, -0.2950143362669384, 0.08620834907188135, -0.16368843705448158, -0.21069957063916853, -0.05201827914399259, 0.08242143584579667, 0.0332179401508149, -0.2789877217262983, 0.13022435780148953, 0.038128141853410534, 0.006280598318313851, -0.1335907903390334, -0.1253990335006486, -0.06458964387009687, 0.09871158196097787, 0.10937007395413649, 0.011103207024964777, 0.14785912183989935, -0.1977058370871579, -0.012371333155726246, 0.42279439645216743, -0.16360115168944878, -0.16690697779105154, 0.0793500450823237, -0.14575440044898322, -0.11275091361911858, 0.10705713767777471, 0.13771304665407275, 0.11288297844721991, -0.08698630142299568, 0.1486295037998763, -0.042885272514403744, 0.15227995107553022, 0.05922133888063185, -0.019204117431517637, 0.3146253112703562, 0.06003192134530229, 0.05631081376443891, 0.05344663859920248, -0.09436791981296504, -0.07674423566375695, -0.3354775835486019, -0.13187615538652822, -0.14067745829987174, 0.04283200359136304, -0.1458273293227916, -0.15287190430304584, 0.3665097948465058, 0.048600983143071916, 0.24115067737943985, 0.1038153587237877, 0.3003207648282542, 0.15832176670048606, 0.055286407643271716, 0.031533568582552324, 0.2690787466462044, 0.22309258726480252, 0.060390112549066545, -0.19484842450029272, 0.02648139697883059, 0.012168325607062262] |
707.2693 | XMM-Newton observations of the Lockman Hole V: time variability of the
brightest AGN | This paper presents the results of a study of X-ray spectral and flux
variability on time scales from months to years, of the 123 brightest objects
(including 46 type-1 AGN and 28 type-2 AGN) detected with XMM-Newton in the
Lockman Hole field. We detected flux variability with a significance >3sigma in
~50% of the objects, including 68+-11% and 48+-15% among our samples of type-1
and type-2 AGN. However we found that the fraction of sources with best quality
light curves that exhibit flux variability on the time scales sampled by our
data is >80%, i.e the great majority of the AGN population may actually vary in
flux on long time scales. The mean relative intrinsic amplitude of flux
variability was found to be ~0.15 although with a large dispersion in measured
values, from ~0.1 to ~0.65. The flux variability properties of our samples of
AGN do not significantly depend on the redshift or X-ray luminosity of the
objects and seem to be similar for the two AGN types. Using a broad band X-ray
colour we found that the fraction of sources showing spectral variability with
a significance >3sigma is ~40% i.e. less common than flux variability. Spectral
variability was found to be more common in type-2 AGN than in type-1 AGN with a
significance >99%. This result is consistent with the fact that part of the
soft emission in type-2 AGN comes from scattered radiation, and this component
is expected to be much less variable than the hard component. The observed flux
and spectral variability properties of our objects cannot be explained as being
produced by variability of one spectral component alone, for example changes in
the continuum shape associated with changes in the mass accretion rate, or
variability in the amount of X-ray absorption. At least two spectral components
must vary in order to explain the X-ray variability of our objects.
| astro-ph | this paper presents the results of a study of xray spectral and flux variability on time scales from months to years of the 123 brightest objects including 46 type1 agn and 28 type2 agn detected with xmmnewton in the lockman hole field we detected flux variability with a significance 3sigma in 50 of the objects including 6811 and 4815 among our samples of type1 and type2 agn however we found that the fraction of sources with best quality light curves that exhibit flux variability on the time scales sampled by our data is 80 ie the great majority of the agn population may actually vary in flux on long time scales the mean relative intrinsic amplitude of flux variability was found to be 015 although with a large dispersion in measured values from 01 to 065 the flux variability properties of our samples of agn do not significantly depend on the redshift or xray luminosity of the objects and seem to be similar for the two agn types using a broad band xray colour we found that the fraction of sources showing spectral variability with a significance 3sigma is 40 ie less common than flux variability spectral variability was found to be more common in type2 agn than in type1 agn with a significance 99 this result is consistent with the fact that part of the soft emission in type2 agn comes from scattered radiation and this component is expected to be much less variable than the hard component the observed flux and spectral variability properties of our objects cannot be explained as being produced by variability of one spectral component alone for example changes in the continuum shape associated with changes in the mass accretion rate or variability in the amount of xray absorption at least two spectral components must vary in order to explain the xray variability of our objects | [['this', 'paper', 'presents', 'the', 'results', 'of', 'a', 'study', 'of', 'xray', 'spectral', 'and', 'flux', 'variability', 'on', 'time', 'scales', 'from', 'months', 'to', 'years', 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707.2694 | Synchnonization, zero-resistance states and rotating Wigner crystal | We show that rotational angles of electrons moving in two dimensions (2D) in
a perpendicular magnetic field can be synchronized by an external microwave
field which frequency is close to the Larmor frequency. The synchronization
eliminates collisions between electrons and thus creates a regime with zero
diffusion corresponding to the zero-resistance states observed in experiments
with high mobility 2D electron gas (2DEG). For long range Coulomb interactions
electrons form a rotating hexagonal Wigner crystal. Possible relevance of this
effect for planetary rings is discussed.
| cond-mat.mes-hall nlin.CD | we show that rotational angles of electrons moving in two dimensions 2d in a perpendicular magnetic field can be synchronized by an external microwave field which frequency is close to the larmor frequency the synchronization eliminates collisions between electrons and thus creates a regime with zero diffusion corresponding to the zeroresistance states observed in experiments with high mobility 2d electron gas 2deg for long range coulomb interactions electrons form a rotating hexagonal wigner crystal possible relevance of this effect for planetary rings is discussed | [['we', 'show', 'that', 'rotational', 'angles', 'of', 'electrons', 'moving', 'in', 'two', 'dimensions', '2d', 'in', 'a', 'perpendicular', 'magnetic', 'field', 'can', 'be', 'synchronized', 'by', 'an', 'external', 'microwave', 'field', 'which', 'frequency', 'is', 'close', 'to', 'the', 'larmor', 'frequency', 'the', 'synchronization', 'eliminates', 'collisions', 'between', 'electrons', 'and', 'thus', 'creates', 'a', 'regime', 'with', 'zero', 'diffusion', 'corresponding', 'to', 'the', 'zeroresistance', 'states', 'observed', 'in', 'experiments', 'with', 'high', 'mobility', '2d', 'electron', 'gas', '2deg', 'for', 'long', 'range', 'coulomb', 'interactions', 'electrons', 'form', 'a', 'rotating', 'hexagonal', 'wigner', 'crystal', 'possible', 'relevance', 'of', 'this', 'effect', 'for', 'planetary', 'rings', 'is', 'discussed']] | [-0.19808916253705752, 0.2887522237310588, 0.007826293371700948, 0.02677936345710242, -0.0278496088202311, -0.15826759407008512, 0.009614445469716364, 0.4034079252298744, -0.25377717931752114, -0.2767844399481657, -0.04511391670980845, -0.2663765623278561, -0.0680156576175553, 0.19432065675833396, 0.02975235486380933, -0.0018220768154909213, 0.013006007977916548, -0.022412610007449985, -0.06753451040034027, -0.1584447589342571, 0.25406806473620236, 0.07541376622837215, 0.3013140418167625, 0.06570305522265178, 0.07898313340376176, -0.0034206598675588056, 0.12421764621865891, 0.039313088675650455, -0.10005384711647432, 0.0010186716899625026, 0.24530339713341423, -0.10087961185767892, 0.22739896179735383, -0.46432764566547813, -0.20949794172442385, 0.017044230098170892, 0.1789441905150722, 0.16875587436897194, -0.11337105443678974, -0.28577468962231206, 0.012968241979944565, -0.1494420892974761, -0.18666482444608673, -0.04222031017499311, 0.05280267660384111, 0.03299062392519166, -0.2933593810136829, 0.12495623693740483, 0.06089763430922869, 0.07439467289008289, -0.10558421497366258, -0.03365220875379497, -0.02503571284580089, 0.07897463761037216, 0.05963310365942085, 0.06024474418345129, 0.17121610865190937, -0.09497748451567964, -0.110188307057667, 0.3976313726466504, -0.05178597103492523, -0.16143041926746568, 0.21396637576565677, -0.2540584073812213, -0.003646876884713059, 0.19422656569319466, 0.1610649035948362, 0.043519885395653546, -0.1318408039702003, 0.06137888604107069, -0.035674639381579165, 0.16121042303607933, 0.13331130712148956, 0.06054495892576164, 0.31253553857649896, 0.14832741414595926, 0.039639013642001716, 0.1287412952861771, -0.18353317784411566, -0.05841573209493488, -0.2000300588441037, -0.1382674517863918, -0.20929665743772471, 0.06440954634897589, -0.06720154767373017, -0.1624414467895847, 0.381059145684135, 0.14634085803048774, 0.18297349305967578, -0.06937092456306952, 0.30602898351692903, 0.11418140869188521, 0.06025177534181802, 0.07584901858076808, 0.26252562162422, 0.18708208902084844, 0.11120035500581642, -0.28738464748797315, -0.02324243089450257, 0.008134069573965721] |
707.2695 | Axion-Like Particles, Cosmic Magnetic Fields and Gamma-Ray Astrophysics | Axion-Like Particles (ALPs) are predicted by many extensions of the Standard
Model and give rise to characteristic dimming and polarization effects in a
light beam travelling in a magnetic field. In this Letter, we demonstrate that
photon-ALP mixing in cosmic magnetic fields produces an observable distortion
in the energy spectra of distant gamma-ray sources (like AGN) for ranges of the
ALP parameters allowed by all available constraints. The resulting effect is
expected to show up in the energy band 100 MeV - 100 GeV, and so it can be
serched with the upcoming GLAST mission.
| astro-ph hep-ph | axionlike particles alps are predicted by many extensions of the standard model and give rise to characteristic dimming and polarization effects in a light beam travelling in a magnetic field in this letter we demonstrate that photonalp mixing in cosmic magnetic fields produces an observable distortion in the energy spectra of distant gammaray sources like agn for ranges of the alp parameters allowed by all available constraints the resulting effect is expected to show up in the energy band 100 mev 100 gev and so it can be serched with the upcoming glast mission | [['axionlike', 'particles', 'alps', 'are', 'predicted', 'by', 'many', 'extensions', 'of', 'the', 'standard', 'model', 'and', 'give', 'rise', 'to', 'characteristic', 'dimming', 'and', 'polarization', 'effects', 'in', 'a', 'light', 'beam', 'travelling', 'in', 'a', 'magnetic', 'field', 'in', 'this', 'letter', 'we', 'demonstrate', 'that', 'photonalp', 'mixing', 'in', 'cosmic', 'magnetic', 'fields', 'produces', 'an', 'observable', 'distortion', 'in', 'the', 'energy', 'spectra', 'of', 'distant', 'gammaray', 'sources', 'like', 'agn', 'for', 'ranges', 'of', 'the', 'alp', 'parameters', 'allowed', 'by', 'all', 'available', 'constraints', 'the', 'resulting', 'effect', 'is', 'expected', 'to', 'show', 'up', 'in', 'the', 'energy', 'band', '100', 'mev', '100', 'gev', 'and', 'so', 'it', 'can', 'be', 'serched', 'with', 'the', 'upcoming', 'glast', 'mission']] | [-0.10967364219788422, 0.27707761433116357, -0.025103060598735526, 0.16100385191259525, -0.0933303499424715, -0.07280254793123052, 0.01902669960612892, 0.40616040244217844, -0.2561386818947491, -0.41915164949993294, 0.003861971447364457, -0.2841777132964262, -0.021152528042915047, 0.26797924018264696, 0.03277204635362792, -0.007387635323108845, 0.04361439437194858, -0.016260060021072945, -0.004128071081434046, -0.22382473687250767, 0.2373784696432932, 0.14296148096521696, 0.21422036901436825, 0.06879038836147326, 0.07513170230192362, -0.054269180332701054, 0.01243155035040071, -0.0071156690177577794, -0.12737973199905991, 0.049348870581466586, 0.20609337613186848, 0.09349726731338168, 0.1605119848503701, -0.3809239928740808, -0.24742076567484325, 0.14990971378621556, 0.13225445949462472, 0.0730229328857154, -0.06754122427113915, -0.29879079542813763, 0.01820096866257729, -0.1648148922750386, -0.12301015345159397, -0.00534264365791954, -0.02232198453488289, 0.02778370360974022, -0.2748677649995893, 0.049874236193856086, -0.005234582869145739, 0.012844149053337113, -0.09235985015308665, -0.0775108891188778, -0.0013440344682944718, 0.00037110883802656203, 0.10801261304552236, 0.05021552997891621, 0.14614446434162318, -0.13037778666713626, -0.11460374716308809, 0.43008573946132456, -0.11050165909272368, -0.07195613171745052, 0.119585225951948, -0.1978737502408925, -0.11582260832731281, 0.1882905178673325, 0.19432111497047128, 0.07236530978523034, -0.13567604626258534, 0.11383059848993717, -0.002806628409582841, 0.17941616081772874, 0.059286489737250155, 0.09613831603639228, 0.29033156191950205, 0.13756079194811924, 0.08446400156883042, 0.1080614893073817, -0.18251427978036866, 0.011082941931622323, -0.31023236268991106, -0.11014465600632692, -0.11556077246949757, 0.07289146516041489, -0.08334095343920497, -0.09175517584725473, 0.4118475031948859, 0.17010826785092353, 0.1977383048544007, -0.01785757539353223, 0.28658275434907565, 0.06351764782542182, 0.06995668134061239, 0.08482732843627692, 0.38305732843676404, 0.10552315188131185, 0.10578733885921138, -0.16095713198044767, -0.007335778986734729, -0.05282267411139303] |
707.2696 | Automated detection of lung nodules in low-dose computed tomography | A computer-aided detection (CAD) system for the identification of pulmonary
nodules in low-dose multi-detector computed-tomography (CT) images has been
developed in the framework of the MAGIC-5 Italian project. One of the main
goals of this project is to build a distributed database of lung CT scans in
order to enable automated image analysis through a data and cpu GRID
infrastructure. The basic modules of our lung-CAD system, consisting in a 3D
dot-enhancement filter for nodule detection and a neural classifier for
false-positive finding reduction, are described. The system was designed and
tested for both internal and sub-pleural nodules. The database used in this
study consists of 17 low-dose CT scans reconstructed with thin slice thickness
(~300 slices/scan). The preliminary results are shown in terms of the FROC
analysis reporting a good sensitivity (85% range) for both internal and
sub-pleural nodules at an acceptable level of false positive findings (1-9
FP/scan); the sensitivity value remains very high (75% range) even at 1-6
FP/scan
| physics.med-ph | a computeraided detection cad system for the identification of pulmonary nodules in lowdose multidetector computedtomography ct images has been developed in the framework of the magic5 italian project one of the main goals of this project is to build a distributed database of lung ct scans in order to enable automated image analysis through a data and cpu grid infrastructure the basic modules of our lungcad system consisting in a 3d dotenhancement filter for nodule detection and a neural classifier for falsepositive finding reduction are described the system was designed and tested for both internal and subpleural nodules the database used in this study consists of 17 lowdose ct scans reconstructed with thin slice thickness 300 slicesscan the preliminary results are shown in terms of the froc analysis reporting a good sensitivity 85 range for both internal and subpleural nodules at an acceptable level of false positive findings 19 fpscan the sensitivity value remains very high 75 range even at 16 fpscan | [['a', 'computeraided', 'detection', 'cad', 'system', 'for', 'the', 'identification', 'of', 'pulmonary', 'nodules', 'in', 'lowdose', 'multidetector', 'computedtomography', 'ct', 'images', 'has', 'been', 'developed', 'in', 'the', 'framework', 'of', 'the', 'magic5', 'italian', 'project', 'one', 'of', 'the', 'main', 'goals', 'of', 'this', 'project', 'is', 'to', 'build', 'a', 'distributed', 'database', 'of', 'lung', 'ct', 'scans', 'in', 'order', 'to', 'enable', 'automated', 'image', 'analysis', 'through', 'a', 'data', 'and', 'cpu', 'grid', 'infrastructure', 'the', 'basic', 'modules', 'of', 'our', 'lungcad', 'system', 'consisting', 'in', 'a', '3d', 'dotenhancement', 'filter', 'for', 'nodule', 'detection', 'and', 'a', 'neural', 'classifier', 'for', 'falsepositive', 'finding', 'reduction', 'are', 'described', 'the', 'system', 'was', 'designed', 'and', 'tested', 'for', 'both', 'internal', 'and', 'subpleural', 'nodules', 'the', 'database', 'used', 'in', 'this', 'study', 'consists', 'of', '17', 'lowdose', 'ct', 'scans', 'reconstructed', 'with', 'thin', 'slice', 'thickness', '300', 'slicesscan', 'the', 'preliminary', 'results', 'are', 'shown', 'in', 'terms', 'of', 'the', 'froc', 'analysis', 'reporting', 'a', 'good', 'sensitivity', '85', 'range', 'for', 'both', 'internal', 'and', 'subpleural', 'nodules', 'at', 'an', 'acceptable', 'level', 'of', 'false', 'positive', 'findings', '19', 'fpscan', 'the', 'sensitivity', 'value', 'remains', 'very', 'high', '75', 'range', 'even', 'at', '16', 'fpscan']] | [-0.04792229617029745, -0.00041971788990837855, -0.01082622337465485, 0.038232387542485695, 0.006358134637897213, -0.12366283726361063, 0.042028062374276275, 0.3595509904016759, -0.17062945819149414, -0.39019748633057855, 0.16783811958062347, -0.3053092242894219, -0.08797904612645628, 0.23638877842346667, -0.09800130464714872, 0.10230573406138646, 0.1121571482649207, 0.01860516690770834, -0.021156177090578317, -0.257063485883645, 0.2361827039234401, 0.08142057280938804, 0.33546641436131563, 0.029836993371562582, 0.12902776668155627, -0.015382225634347574, -0.05978965093351268, 0.0048066612661761396, -0.04928907333854951, 0.12576861686249768, 0.35452767312709316, 0.17195911775799652, 0.2850924173850883, -0.35243855542168506, -0.17178836336292425, 0.0734162184720238, 0.1334406720608278, 0.05757297864828633, -0.05385536146715429, -0.306870321158831, 0.13630465213270263, -0.16015841090120375, -0.08025624897951882, -0.07327745906290373, -0.009608236207699804, -0.046320797858403664, -0.28186474252435884, 0.06362723972453596, -0.007056990437501786, 0.13655640025093568, -0.1285903240505338, -0.12647467997804698, -0.00227118692409515, 0.1703372365898556, -0.022311796600096464, 0.09007538251713484, 0.1675669959642821, -0.18432669646222316, -0.10615032514499415, 0.34162416229415626, -0.026518560287822648, -0.15430805722732413, 0.18434853363003023, -0.11635238866875666, -0.13399790459939467, 0.2088921782834565, 0.20083891342887106, 0.12025021161470148, -0.1827486509554624, -0.01158799864293732, 0.013948834143210739, 0.21390238461644676, 0.04531220105108409, -0.0642337997206578, 0.18494948597466634, 0.27382666200971584, -0.03317210043657243, 0.14271367398955026, -0.22472159611974277, 0.007537589594113087, -0.2559585704101444, -0.1871997358496575, -0.12536494248832752, -0.028639048356197627, -0.06253692864398913, -0.15757952017608415, 0.44468225700646835, 0.16765814088893677, 0.1579324267256786, 0.03774588546575674, 0.2989777712139234, 0.0038135270473967286, 0.100856499356869, 0.012551819680416895, 0.2308977723359039, 0.039179496517331866, 0.1098782023327658, -0.17389592579170282, 0.06384581606835127, 0.007944965432245845] |
707.2697 | A Homogeneous Sample of Sub-DLAs IV: Global Metallicity Evolution | An accurate method to measure the abundance of high-redshift galaxies
consists in the observation of absorbers along the line of sight toward a
background quasar. Here, we present abundance measurements of 13 z>3 sub-Damped
Lyman-alpha Systems (quasar absorbers with HI column density 19 < log N(HI) <
20.3 cm^-2) based on the high resolution observations with VLT UVES
spectrograph. These observations more than double the metallicity information
for sub-DLAs previously available at z>3. This new data, combined with other
sub-DLA measurements from the literature, confirm the stronger metallicity
redshift evolution than for the classical Damped Lyman-alpha absorbers.
Besides, these observations are used to compute for the first time the fraction
of gas ionised from photo-ionisation modelling in a sample of sub-DLAs. Based
on these results, we calculate that sub-DLAs contribute no more than 6% of the
expected amount of metals at z~2.5. We therefore conclude that even if sub-DLAs
are found to be more metal-rich than classical DLAs, they are insufficient to
close the so-called ``missing metals problem''.
| astro-ph | an accurate method to measure the abundance of highredshift galaxies consists in the observation of absorbers along the line of sight toward a background quasar here we present abundance measurements of 13 z3 subdamped lymanalpha systems quasar absorbers with hi column density 19 log nhi 203 cm2 based on the high resolution observations with vlt uves spectrograph these observations more than double the metallicity information for subdlas previously available at z3 this new data combined with other subdla measurements from the literature confirm the stronger metallicity redshift evolution than for the classical damped lymanalpha absorbers besides these observations are used to compute for the first time the fraction of gas ionised from photoionisation modelling in a sample of subdlas based on these results we calculate that subdlas contribute no more than 6 of the expected amount of metals at z25 we therefore conclude that even if subdlas are found to be more metalrich than classical dlas they are insufficient to close the socalled missing metals problem | [['an', 'accurate', 'method', 'to', 'measure', 'the', 'abundance', 'of', 'highredshift', 'galaxies', 'consists', 'in', 'the', 'observation', 'of', 'absorbers', 'along', 'the', 'line', 'of', 'sight', 'toward', 'a', 'background', 'quasar', 'here', 'we', 'present', 'abundance', 'measurements', 'of', '13', 'z3', 'subdamped', 'lymanalpha', 'systems', 'quasar', 'absorbers', 'with', 'hi', 'column', 'density', '19', 'log', 'nhi', '203', 'cm2', 'based', 'on', 'the', 'high', 'resolution', 'observations', 'with', 'vlt', 'uves', 'spectrograph', 'these', 'observations', 'more', 'than', 'double', 'the', 'metallicity', 'information', 'for', 'subdlas', 'previously', 'available', 'at', 'z3', 'this', 'new', 'data', 'combined', 'with', 'other', 'subdla', 'measurements', 'from', 'the', 'literature', 'confirm', 'the', 'stronger', 'metallicity', 'redshift', 'evolution', 'than', 'for', 'the', 'classical', 'damped', 'lymanalpha', 'absorbers', 'besides', 'these', 'observations', 'are', 'used', 'to', 'compute', 'for', 'the', 'first', 'time', 'the', 'fraction', 'of', 'gas', 'ionised', 'from', 'photoionisation', 'modelling', 'in', 'a', 'sample', 'of', 'subdlas', 'based', 'on', 'these', 'results', 'we', 'calculate', 'that', 'subdlas', 'contribute', 'no', 'more', 'than', '6', 'of', 'the', 'expected', 'amount', 'of', 'metals', 'at', 'z25', 'we', 'therefore', 'conclude', 'that', 'even', 'if', 'subdlas', 'are', 'found', 'to', 'be', 'more', 'metalrich', 'than', 'classical', 'dlas', 'they', 'are', 'insufficient', 'to', 'close', 'the', 'socalled', 'missing', 'metals', 'problem']] | [-0.020134993515703938, 0.08631141192123017, -0.007696227759616561, 0.07112910915713151, -0.0866643410997959, -0.12067053692011409, 0.061881145550757195, 0.4639615698392133, -0.07290688680529774, -0.33174872911725956, 0.01646795040501439, -0.3869850958321603, 0.007031337874212179, 0.2126504457078829, 0.016995547521657432, 0.008636590995242348, 0.022213731463213104, -0.13754429692873754, -0.050178831860374695, -0.34189630726265374, 0.2813320438712779, 0.10251427309570767, 0.1859072035456256, -0.07709595350638392, 0.06227023332696745, -0.1445227375714086, -0.13601323529371026, 0.009811976536020008, -0.16860944179283996, 0.06508018318367337, 0.3037015117525336, 0.11066831017112225, 0.23448203809851084, -0.3407937071889871, -0.1887815735774137, 0.051776520907878876, 0.21650652823891176, 0.09771302391505654, -0.07431964352521807, -0.25750058352756483, 0.05590309099931023, -0.1130907557573708, -0.1674378907703514, 0.09737766129722122, -0.00764247559078307, 0.016760404451738996, -0.1880386557005043, 0.16624914587430475, -0.0529156851088516, 0.13600574575746097, -0.07176263157838636, -0.13842795822062495, -0.09275395355148083, -0.013744268852499235, -0.046973541801857074, 0.0232804684544891, 0.17297436588469062, -0.1342563651213198, 0.0027439560718744635, 0.4164415070147489, -0.12164680652933318, 0.019279011498564428, 0.2370445939841265, -0.24504672598334995, -0.26003493669622363, 0.19450010282425098, 0.17256030235832265, 0.10637411431981678, -0.1456410520785791, -0.03466830864486969, -0.06576114056136807, 0.2916905332401574, -0.003488105250500053, 0.09282032959093059, 0.25981127290919154, 0.042503174428031386, 0.08566364788207301, 0.008237643423700616, -0.20166231944584792, 0.0148177900802518, -0.2077392426106226, -0.1583182193693552, -0.11154038581929832, 0.1298993590865733, -0.15236781754373876, -0.12051986157403227, 0.2800066057558968, 0.2362529851449934, 0.2704492121672255, 0.11652090375631464, 0.3474305059356862, 0.1474157134470732, 0.07868332598787586, 0.07897267862032335, 0.2927750176679994, 0.18729983517585927, 0.09785904347158811, -0.18715157036680774, 0.09942521866837359, 0.016817450673454047] |
707.2698 | Ram pressure stripping of disc galaxies orbiting in clusters. I. Mass
and radius of the remaining gas disc | We present the first 3D hydrodynamical simulations of ram pressure stripping
of a disc galaxy orbiting in a galaxy cluster. Along the orbit, the ram
pressure that this galaxy experiences varies with time. In this paper, we focus
on the evolution of the radius and mass of the remaining gas disc and compare
it with the classical analytical estimate proposed by Gunn & Gott 1972. We find
that this simple estimate works well in predicting the evolution of the radius
of the remaining gas disc. Only if the ram pressure increases faster than the
stripping timescale, the disc radius remains larger than predicted. However,
orbits with such short ram pressure peaks are unlikely to occur in other than
compact clusters. Unlike the radius evolution, the mass loss history for the
galaxy is not accurately described by the analytical estimate. Generally, in
the simulations the galaxy loses its gas more slowly than predicted.
| astro-ph | we present the first 3d hydrodynamical simulations of ram pressure stripping of a disc galaxy orbiting in a galaxy cluster along the orbit the ram pressure that this galaxy experiences varies with time in this paper we focus on the evolution of the radius and mass of the remaining gas disc and compare it with the classical analytical estimate proposed by gunn gott 1972 we find that this simple estimate works well in predicting the evolution of the radius of the remaining gas disc only if the ram pressure increases faster than the stripping timescale the disc radius remains larger than predicted however orbits with such short ram pressure peaks are unlikely to occur in other than compact clusters unlike the radius evolution the mass loss history for the galaxy is not accurately described by the analytical estimate generally in the simulations the galaxy loses its gas more slowly than predicted | [['we', 'present', 'the', 'first', '3d', 'hydrodynamical', 'simulations', 'of', 'ram', 'pressure', 'stripping', 'of', 'a', 'disc', 'galaxy', 'orbiting', 'in', 'a', 'galaxy', 'cluster', 'along', 'the', 'orbit', 'the', 'ram', 'pressure', 'that', 'this', 'galaxy', 'experiences', 'varies', 'with', 'time', 'in', 'this', 'paper', 'we', 'focus', 'on', 'the', 'evolution', 'of', 'the', 'radius', 'and', 'mass', 'of', 'the', 'remaining', 'gas', 'disc', 'and', 'compare', 'it', 'with', 'the', 'classical', 'analytical', 'estimate', 'proposed', 'by', 'gunn', 'gott', '1972', 'we', 'find', 'that', 'this', 'simple', 'estimate', 'works', 'well', 'in', 'predicting', 'the', 'evolution', 'of', 'the', 'radius', 'of', 'the', 'remaining', 'gas', 'disc', 'only', 'if', 'the', 'ram', 'pressure', 'increases', 'faster', 'than', 'the', 'stripping', 'timescale', 'the', 'disc', 'radius', 'remains', 'larger', 'than', 'predicted', 'however', 'orbits', 'with', 'such', 'short', 'ram', 'pressure', 'peaks', 'are', 'unlikely', 'to', 'occur', 'in', 'other', 'than', 'compact', 'clusters', 'unlike', 'the', 'radius', 'evolution', 'the', 'mass', 'loss', 'history', 'for', 'the', 'galaxy', 'is', 'not', 'accurately', 'described', 'by', 'the', 'analytical', 'estimate', 'generally', 'in', 'the', 'simulations', 'the', 'galaxy', 'loses', 'its', 'gas', 'more', 'slowly', 'than', 'predicted']] | [-0.09229882359111509, 0.10116919862655367, -0.08739428072921093, 0.08352911647020636, -0.09192564844351188, -0.03243094850763284, 0.0029757769696648843, 0.3906573676905095, -0.1950251721585823, -0.31640381700920545, 0.06951392386632892, -0.2499900319743038, -0.053508270775131414, 0.21579779389727588, -0.028655704073854628, -0.017587189488991822, 0.057569469138671524, -0.0038748778709648364, -0.10247796319042708, -0.3019500868641679, 0.31266082201264056, 0.11546449201021171, 0.11185601895940274, -0.02880763360730909, 0.038583039003886925, -0.03579661240246122, -0.06475794729653327, -0.012861963725395945, -0.2075728928298876, 0.005251306610641421, 0.13672471451511398, 0.08130278034962171, 0.2746178366780429, -0.42622756798264405, -0.2569094501491266, 0.044149335920934056, 0.1820572851756156, 0.08579838404197566, -0.09372923842028773, -0.216152982638273, 0.08830698116355581, -0.2513072786494991, -0.18302991959753612, 0.061204878628772025, 0.07969802806141559, 0.004703500109959073, -0.19502100158199076, 0.1958903797057192, 0.09399692260502955, 0.025898756903429694, -0.11710465694191736, -0.08266222053238295, -0.05076151915875245, 0.0740252478365842, 0.0472410725944657, 0.09551276936695374, 0.2618093483970309, -0.13484816968175797, 0.017639355385515667, 0.4406227895262226, -0.06813522228633442, -0.06565605985950555, 0.25666659213417514, -0.23605632476064542, -0.08226544237699489, 0.1091662501655704, 0.14864717814331221, 0.09457472489880003, -0.10402919885714766, 0.007870518080537464, -0.05574488610689164, 0.204859192793054, 0.08632016210625602, -0.038365870257296035, 0.26284426553729945, 0.1356636265983546, 0.054170585090960593, 0.10527652074368547, -0.13358893356014612, -0.08148712717113855, -0.19856612008706426, -0.10299671155752133, -0.17334890588254526, 0.021329636054999344, -0.12124509885826222, -0.1360553012519384, 0.3204674675616602, 0.15658848847698925, 0.23928757741529222, 0.07767012122007, 0.3688646165826759, 0.09724542294900297, 0.11203327209115127, 0.18065782642571737, 0.2767191713071422, 0.13524291099709096, 0.05306257015488894, -0.2916712463719289, 0.09701855781963033, 0.012497123662345358] |
707.2699 | Wilson loops: From four-dimensional SYM to two-dimensional YM | In this note we study supersymmetric Wilson loops restricted to an S^2
submanifold of four-dimensional space in N=4 super Yang-Mills. We provide
evidence from both perturbation theory and the AdS dual that those loops are
equal to the analogous observables in two-dimensional Yang-Mills on S^2
(excluding non-perturbative contributions). This relates a subsector of N=4 SYM
to a low-dimensional soluble model and also suggests that this subsector of N
=4 SYM is invariant under area preserving diffeomorphisms.
| hep-th | in this note we study supersymmetric wilson loops restricted to an s2 submanifold of fourdimensional space in n4 super yangmills we provide evidence from both perturbation theory and the ads dual that those loops are equal to the analogous observables in twodimensional yangmills on s2 excluding nonperturbative contributions this relates a subsector of n4 sym to a lowdimensional soluble model and also suggests that this subsector of n 4 sym is invariant under area preserving diffeomorphisms | [['in', 'this', 'note', 'we', 'study', 'supersymmetric', 'wilson', 'loops', 'restricted', 'to', 'an', 's2', 'submanifold', 'of', 'fourdimensional', 'space', 'in', 'n4', 'super', 'yangmills', 'we', 'provide', 'evidence', 'from', 'both', 'perturbation', 'theory', 'and', 'the', 'ads', 'dual', 'that', 'those', 'loops', 'are', 'equal', 'to', 'the', 'analogous', 'observables', 'in', 'twodimensional', 'yangmills', 'on', 's2', 'excluding', 'nonperturbative', 'contributions', 'this', 'relates', 'a', 'subsector', 'of', 'n4', 'sym', 'to', 'a', 'lowdimensional', 'soluble', 'model', 'and', 'also', 'suggests', 'that', 'this', 'subsector', 'of', 'n', '4', 'sym', 'is', 'invariant', 'under', 'area', 'preserving', 'diffeomorphisms']] | [-0.15339380408955836, 0.2015369159499211, -0.05054872084752118, 0.12165063684254787, -0.028857801844807046, -0.12928376644604692, -0.03347694756934958, 0.3373360895600758, -0.09446576670253355, -0.18362213223314794, 0.09745147193653363, -0.3478434433743946, -0.23802021761290043, 0.07169227164826895, -0.10729870936637254, 0.043097284009778185, -0.002112816167554181, 0.07703480982615331, -0.14147080279470078, -0.2602919116861334, 0.3031058185672584, -0.04744017414601618, 0.2419272586197813, 0.07556558045861923, 0.0824343365445537, 0.017155007754856916, 0.015031506442219802, 0.032180755751094116, -0.11823754080691479, 0.17005901228587486, 0.24636571148508474, 0.04411195233268173, 0.04310687587253357, -0.44559129815254556, -0.19287254628235181, 0.07736408083062422, 0.21085574379264327, 0.09538059565238655, 0.0483515826712583, -0.2358331269474308, 0.02661252025465824, -0.15540475949743077, -0.1852783860001517, -0.1025455248738198, 0.04149200235444464, -0.20183515545336136, -0.24857303506302597, 0.046704117542264466, 0.038914838193082495, 0.06090941400830879, -0.03672193540382738, -0.025309662870744144, -0.08431160397288438, 0.09174018577476473, 0.11527602328753442, 0.1349761605256629, 0.11947638333137882, -0.1667894591411919, -0.15019409357888722, 0.3622677411001764, -0.08989213605558402, -0.24531445789494014, 0.1567994109538727, -0.22218574549218542, -0.2710380237059374, 0.13450061795667448, 0.1184462305421843, 0.2004315263632299, -0.13456152359905996, 0.2803715047117102, -0.1363882288140686, 0.12437531717219635, 0.11170166123070215, 0.020231366782498202, 0.20916103456846413, 0.10040133019088228, 0.09868451333175854, 0.18559495066782752, 0.04251014412147924, -0.12707979499215358, -0.4533753127080241, -0.14132053275764184, -0.06763210658008527, 0.16433458609849608, -0.14349876271865614, -0.17621714755353568, 0.33739083662849706, 0.09637309719906434, 0.1700336003529006, 0.08879975946375022, 0.1575038895856491, 0.07622437373931079, 0.07512841770413185, 0.10438914905841414, 0.2051475981593524, 0.19762680644022398, 0.034882739437498936, -0.25808513390304716, -0.21657960997943423, 0.24396593218032075] |
707.27 | Radiative decays with light scalar mesons and singlet-octet mixing in
ChPT | We study different types of radiative decays involving f0(980) and a0(980)
mesons within a unified ChPT-based approach at one-loop level. Light scalar
resonances which are seen in pi pi, pi eta, K K-bar channels of phi(1020)
radiative decays and in J/psi decays are responsible for key questions of
low-energy dynamics in the strong interaction sector, and decays phi(1020) ->
gamma a0(980), phi(1020) -> gamma f0(980), a0(980) -> gamma gamma, f0(980) ->
gamma gamma are of interest for current experimental programs in Juelich,
Frascati and Novosibirsk. From theoretical point of view it is important to
verify whether light scalar mesons are members of some flavor octet or nonet.
We find a value of mixing angle dictated by consistency with experiment and
coupling structures of ChPT Lagrangian. Decay widths f0(980)/a0(980) -> gamma
rho(770)/omega(782), which are not studied experimentally yet, are predicted.
We also obtain several relations between widths, which hold independently of
coupling constants and represent a fingerprint of the model.
| hep-ph | we study different types of radiative decays involving f0980 and a0980 mesons within a unified chptbased approach at oneloop level light scalar resonances which are seen in pi pi pi eta k kbar channels of phi1020 radiative decays and in jpsi decays are responsible for key questions of lowenergy dynamics in the strong interaction sector and decays phi1020 gamma a0980 phi1020 gamma f0980 a0980 gamma gamma f0980 gamma gamma are of interest for current experimental programs in juelich frascati and novosibirsk from theoretical point of view it is important to verify whether light scalar mesons are members of some flavor octet or nonet we find a value of mixing angle dictated by consistency with experiment and coupling structures of chpt lagrangian decay widths f0980a0980 gamma rho770omega782 which are not studied experimentally yet are predicted we also obtain several relations between widths which hold independently of coupling constants and represent a fingerprint of the model | [['we', 'study', 'different', 'types', 'of', 'radiative', 'decays', 'involving', 'f0980', 'and', 'a0980', 'mesons', 'within', 'a', 'unified', 'chptbased', 'approach', 'at', 'oneloop', 'level', 'light', 'scalar', 'resonances', 'which', 'are', 'seen', 'in', 'pi', 'pi', 'pi', 'eta', 'k', 'kbar', 'channels', 'of', 'phi1020', 'radiative', 'decays', 'and', 'in', 'jpsi', 'decays', 'are', 'responsible', 'for', 'key', 'questions', 'of', 'lowenergy', 'dynamics', 'in', 'the', 'strong', 'interaction', 'sector', 'and', 'decays', 'phi1020', 'gamma', 'a0980', 'phi1020', 'gamma', 'f0980', 'a0980', 'gamma', 'gamma', 'f0980', 'gamma', 'gamma', 'are', 'of', 'interest', 'for', 'current', 'experimental', 'programs', 'in', 'juelich', 'frascati', 'and', 'novosibirsk', 'from', 'theoretical', 'point', 'of', 'view', 'it', 'is', 'important', 'to', 'verify', 'whether', 'light', 'scalar', 'mesons', 'are', 'members', 'of', 'some', 'flavor', 'octet', 'or', 'nonet', 'we', 'find', 'a', 'value', 'of', 'mixing', 'angle', 'dictated', 'by', 'consistency', 'with', 'experiment', 'and', 'coupling', 'structures', 'of', 'chpt', 'lagrangian', 'decay', 'widths', 'f0980a0980', 'gamma', 'rho770omega782', 'which', 'are', 'not', 'studied', 'experimentally', 'yet', 'are', 'predicted', 'we', 'also', 'obtain', 'several', 'relations', 'between', 'widths', 'which', 'hold', 'independently', 'of', 'coupling', 'constants', 'and', 'represent', 'a', 'fingerprint', 'of', 'the', 'model']] | [-0.09864847957291395, 0.28293514057479213, -0.09594875440234318, 0.15006290716930953, -0.07395683057410152, -0.19762964392583326, 0.07983929982200559, 0.35891036530589, -0.21021339345239348, -0.23987741357536593, -0.07416012837692458, -0.35053319944142314, -0.04069646830076205, 0.13164312169139616, 0.13417285044622412, 0.11831840704651672, 0.05987788715988005, 0.038350527658813485, -0.00387175302450104, -0.12418853070458251, 0.2791361512622404, -0.029209867674293684, 0.16662176119433225, 0.1492208431193017, -0.0743901827495153, -0.02433429325710198, -0.015602751509409006, -0.11664015454803839, -0.1715160250406418, 0.022045180452742466, 0.2395993232865677, 0.09757600239122678, 0.11077676208591775, -0.29328012571817164, -0.10188106815545134, 0.12870060213486126, 0.17089677407822915, 0.027870375179765306, -0.031615993334286795, -0.378293708116919, 0.12959231133266402, -0.12947734522228865, -0.09991905295694443, -0.11470750139683093, 0.03091835352825001, -0.08183571913334738, -0.33768710266418855, 0.0881461144214738, -0.07305144685118362, 0.08475085486976527, -0.022126439422687615, -0.2585910115495177, -0.009269321937800237, 0.05736518881167285, 0.16510235455184316, 0.07291681259984646, 0.1744272090850006, -0.13992554458519935, -0.1520041275254794, 0.4330699786690897, -0.05969894649215827, -0.17024560208971562, 0.10644527714841963, -0.1720511750777644, -0.16115318059210518, 0.18164868012995852, 0.21021886517011903, 0.054740265759296323, -0.18139490722310975, 0.15951445697282907, -0.03304076241635669, 0.16699898220375822, 0.09946471006198983, 0.10505832333767198, 0.1967039930337035, 0.15945096546784043, -0.11112580848490133, 0.028549679806210884, -0.04184446919795224, -0.06285622213679169, -0.42440915709869986, -0.10748616471200396, -0.03671094651432022, 0.08434035385643686, -0.02932638115817099, -0.06322684008199231, 0.35680293072149843, 0.013301751165846852, 0.24351678623229658, 0.004843261429127061, 0.269883066051223, 0.08259660777893212, 0.021894713915045078, 0.09090640046940136, 0.32517301011926303, 0.27822240985053787, 0.07857910989428331, -0.28171834344883745, -0.0012034085934589569, 0.013593707316383524] |
707.2701 | A fixed point iteration for computing the matrix logarithm | In various areas of applied numerics, the problem of calculating the
logarithm of a matrix A emerges. Since series expansions of the logarithm
usually do not converge well for matrices far away from the identity, the
standard numerical method calculates successive square roots. In this article,
a new algorithm is presented that relies on the computation of successive
matrix exponentials. Convergence of the method is demonstrated for a large
class of initial matrices and favorable choices of the initial matrix are
discussed.
| cs.NA cs.DS | in various areas of applied numerics the problem of calculating the logarithm of a matrix a emerges since series expansions of the logarithm usually do not converge well for matrices far away from the identity the standard numerical method calculates successive square roots in this article a new algorithm is presented that relies on the computation of successive matrix exponentials convergence of the method is demonstrated for a large class of initial matrices and favorable choices of the initial matrix are discussed | [['in', 'various', 'areas', 'of', 'applied', 'numerics', 'the', 'problem', 'of', 'calculating', 'the', 'logarithm', 'of', 'a', 'matrix', 'a', 'emerges', 'since', 'series', 'expansions', 'of', 'the', 'logarithm', 'usually', 'do', 'not', 'converge', 'well', 'for', 'matrices', 'far', 'away', 'from', 'the', 'identity', 'the', 'standard', 'numerical', 'method', 'calculates', 'successive', 'square', 'roots', 'in', 'this', 'article', 'a', 'new', 'algorithm', 'is', 'presented', 'that', 'relies', 'on', 'the', 'computation', 'of', 'successive', 'matrix', 'exponentials', 'convergence', 'of', 'the', 'method', 'is', 'demonstrated', 'for', 'a', 'large', 'class', 'of', 'initial', 'matrices', 'and', 'favorable', 'choices', 'of', 'the', 'initial', 'matrix', 'are', 'discussed']] | [-0.1187447429430194, 0.07197514037806087, -0.08024427352370922, 0.07539923124089155, -0.016793485455464843, -0.09367152846918055, 0.029987738714780568, 0.31954078730650065, -0.2905185358008234, -0.24135625261313667, 0.1640345532185875, -0.24387100006158396, -0.19522764473846863, 0.20932099630448558, -0.036067455319514524, 0.09745577353666104, 0.09557486297818264, 0.04640074986283008, -0.16144144728995588, -0.24138651556539825, 0.29456723254264855, 0.04938037250554416, 0.27569939323314807, 0.04164319740687838, 0.13718145614399052, 0.005824620892271036, -0.07940487758960665, -0.005261915622324478, -0.05273491898368797, 0.1166995389276275, 0.21161916260834693, 0.15407325056517815, 0.30839908336539096, -0.4097940701900459, -0.13233246789427427, 0.10876629277268743, 0.17209047458145948, 0.11319131802812946, -0.03287006580276505, -0.22616291657748927, 0.10113284757315386, -0.1595080696534729, -0.14759026448492232, -0.07173544773548024, -0.004462058934178658, 0.05655577920786128, -0.32555433383166066, 0.08491254219694472, 0.024440121804307238, 0.05258498385707598, 0.0014407092239707708, -0.20573513756119988, 0.07808563413194994, 0.12238756934089995, 0.07871710393782251, -0.032817539191100656, 0.11589302600747566, -0.07139276122254115, -0.07398821404998804, 0.3703184277273533, -0.01722212573059085, -0.21347773011501242, 0.14757247096518192, -0.1523179039245517, -0.12490453120184744, 0.16357847165157338, 0.14176444234553634, 0.15514326570328416, -0.11592632057940269, 0.13753696872849902, -0.0678183897909504, 0.11478415537034957, 0.04404581936144429, -0.027895506692868544, 0.12559083338100008, 0.1119134075280915, 0.08480177156729396, 0.1385398364466865, -0.028262124132796575, -0.16374505291942779, -0.3372022492936017, -0.14530737609488936, -0.2964076957688099, 0.016251087680114035, -0.1286877311037487, -0.2409873660083288, 0.42247203835172625, 0.11560137057109032, 0.21240383106079408, 0.09090961820286948, 0.2688268724510946, 0.1430052938166915, 0.055682497252369435, 0.041356302224457756, 0.19490597487949743, 0.16756242385315823, 0.08786336589241173, -0.19359365797022404, 0.0802892997929054, 0.15942413598673827] |
707.2702 | VISIR/VLT mid-infrared imaging of Seyfert nuclei: Nuclear dust emission
and the Seyfert-2 dichotomy | Half of the Seyfert-2 galaxies escaped detection of broad lines in their
polarised spectra observed so far. Some authors have suspected that these
non-HBLRs contain real Sy2 nuclei without intrinsic broad line region hidden
behind a dust torus. If this were true, then their nuclear structure would
fundamentally differ from that of Sy2s with polarised broad lines: in
particular, they would not be explained by orientation-based AGN unification.
Further arguments for two physically different Sy2 populations have been
derived from the warm and cool IRAS F25/F60 ratios. These ratios, however,
refer to the entire host galaxies and are unsuitable to conclusively establish
the absence of a nuclear dust torus. Instead, a study of the Seyfert-2
dichotomy should be performed on the basis of nuclear properties only. Here we
present the first comparison between [OIII] 5007A and mid-infrared imaging at
matching spatial resolution. Exploring the Seyfert-2 dichotomy we find that the
distributions of nuclear mid-infrared/[OIII] luminosity ratios are
indistinguishable for Sy1s and Sy2s with and without detected polarised broad
lines and irrespective of having warm or cool IRAS F25/F60 ratios. We find no
evidence for the existence of a population of real Sy2s with a deficit of
nuclear dust emission. Our results suggest 1) that all Seyfert nuclei possess
the same physical structure including the putative dust torus and 2) that the
cool IRAS colours are caused by a low contrast of AGN to host galaxy. Then the
Seyfert-2 dichotomy is explained in part by unification of non-HBLRs with
narrow-line Sy1s and to a larger rate by observational biases caused by a low
AGN/host contrast and/or an unfavourable scattering geometry.
| astro-ph | half of the seyfert2 galaxies escaped detection of broad lines in their polarised spectra observed so far some authors have suspected that these nonhblrs contain real sy2 nuclei without intrinsic broad line region hidden behind a dust torus if this were true then their nuclear structure would fundamentally differ from that of sy2s with polarised broad lines in particular they would not be explained by orientationbased agn unification further arguments for two physically different sy2 populations have been derived from the warm and cool iras f25f60 ratios these ratios however refer to the entire host galaxies and are unsuitable to conclusively establish the absence of a nuclear dust torus instead a study of the seyfert2 dichotomy should be performed on the basis of nuclear properties only here we present the first comparison between oiii 5007a and midinfrared imaging at matching spatial resolution exploring the seyfert2 dichotomy we find that the distributions of nuclear midinfraredoiii luminosity ratios are indistinguishable for sy1s and sy2s with and without detected polarised broad lines and irrespective of having warm or cool iras f25f60 ratios we find no evidence for the existence of a population of real sy2s with a deficit of nuclear dust emission our results suggest 1 that all seyfert nuclei possess the same physical structure including the putative dust torus and 2 that the cool iras colours are caused by a low contrast of agn to host galaxy then the seyfert2 dichotomy is explained in part by unification of nonhblrs with narrowline sy1s and to a larger rate by observational biases caused by a low agnhost contrast andor an unfavourable scattering geometry | [['half', 'of', 'the', 'seyfert2', 'galaxies', 'escaped', 'detection', 'of', 'broad', 'lines', 'in', 'their', 'polarised', 'spectra', 'observed', 'so', 'far', 'some', 'authors', 'have', 'suspected', 'that', 'these', 'nonhblrs', 'contain', 'real', 'sy2', 'nuclei', 'without', 'intrinsic', 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707.2703 | Electric Polarization Induced by a Proper Helical Magnetic Ordering in a
Delafossite Multiferroic CuFe1-xAlxO2 | Multiferroic CuFe1-xAlxO2 (x=0.02) exhibits a ferroelectric ordering
accompanied by a proper helical magnetic ordering below T=7K under zero
magnetic field. By polarized neutron diffraction and pyroelectric measurements,
we have revealed a one-to-one correspondence between the spin helicity and the
direction of the spontaneous electric polarization. This result indicates that
the spin helicity of the proper helical magnetic ordering is essential for the
ferroelectricity in CuFe1-xAlxO2. The induction of the electric polarization by
the proper helical magnetic ordering is, however, cannot be explained by the
Katsura-Nagaosa-Balatsky model, which successfully explains the
ferroelectricity in the recently explored ferroelectric helimagnets, such as
TbMnO3. We thus conclude that CuFe1-xAlxO2 is a new class of magnetic
ferroelectrics.
| cond-mat.str-el | multiferroic cufe1xalxo2 x002 exhibits a ferroelectric ordering accompanied by a proper helical magnetic ordering below t7k under zero magnetic field by polarized neutron diffraction and pyroelectric measurements we have revealed a onetoone correspondence between the spin helicity and the direction of the spontaneous electric polarization this result indicates that the spin helicity of the proper helical magnetic ordering is essential for the ferroelectricity in cufe1xalxo2 the induction of the electric polarization by the proper helical magnetic ordering is however cannot be explained by the katsuranagaosabalatsky model which successfully explains the ferroelectricity in the recently explored ferroelectric helimagnets such as tbmno3 we thus conclude that cufe1xalxo2 is a new class of magnetic ferroelectrics | [['multiferroic', 'cufe1xalxo2', 'x002', 'exhibits', 'a', 'ferroelectric', 'ordering', 'accompanied', 'by', 'a', 'proper', 'helical', 'magnetic', 'ordering', 'below', 't7k', 'under', 'zero', 'magnetic', 'field', 'by', 'polarized', 'neutron', 'diffraction', 'and', 'pyroelectric', 'measurements', 'we', 'have', 'revealed', 'a', 'onetoone', 'correspondence', 'between', 'the', 'spin', 'helicity', 'and', 'the', 'direction', 'of', 'the', 'spontaneous', 'electric', 'polarization', 'this', 'result', 'indicates', 'that', 'the', 'spin', 'helicity', 'of', 'the', 'proper', 'helical', 'magnetic', 'ordering', 'is', 'essential', 'for', 'the', 'ferroelectricity', 'in', 'cufe1xalxo2', 'the', 'induction', 'of', 'the', 'electric', 'polarization', 'by', 'the', 'proper', 'helical', 'magnetic', 'ordering', 'is', 'however', 'can', 'not', 'be', 'explained', 'by', 'the', 'katsuranagaosabalatsky', 'model', 'which', 'successfully', 'explains', 'the', 'ferroelectricity', 'in', 'the', 'recently', 'explored', 'ferroelectric', 'helimagnets', 'such', 'as', 'tbmno3', 'we', 'thus', 'conclude', 'that', 'cufe1xalxo2', 'is', 'a', 'new', 'class', 'of', 'magnetic', 'ferroelectrics']] | [-0.2292787047037113, 0.2748104204563836, -0.019478560689078495, 0.022866206406409628, -0.13552154050068518, -0.05934509977418105, 0.06335399514146611, 0.44145616997791604, -0.2920164390409415, -0.2849500405280727, -0.020060405131033826, -0.21899094618856907, -0.13693742435920028, 0.16613373818263347, 0.06195243212715846, -0.02283410512042784, -0.07756149355915531, -0.016608096461380478, -0.08024097621014374, -0.10751426169356183, 0.23091727883794008, -0.017964955963260306, 0.3311274013259506, 0.08227981575630787, 0.10808183894847083, -0.0108585713237557, 0.12482702211204884, 0.09180579345211783, -0.08998563618306998, 0.015022180727229708, 0.21214783656518016, -0.05835228156199498, 0.1344778097926977, -0.4274400102666917, -0.21196940738349263, 0.020262001795216207, 0.09306939072346529, 0.1218461024614084, -0.09297350784186768, -0.267128434699787, 0.1159196061255262, -0.10525277438079032, -0.13349604509787355, -0.15781844353851393, -0.025841110102642756, 0.012082484001664659, -0.27716921562889374, 0.09653937575547436, 0.1774162902307194, 0.15866394993741956, -0.1278292191074749, -0.11220691095526635, -0.10751374398844432, -0.0034921157247988525, 0.13395783347304316, 0.16592583524277515, 0.13318075354631365, -0.10755599887868537, -0.20328280836986626, 0.32990078074214735, -0.019348678886849203, -0.09245617690174716, 0.05175303125473778, -0.25121378955179907, -0.09993352216412932, 0.18774531203099584, 0.03671527658053468, 0.11636116657101145, -0.14852713078128554, 0.08002474123459573, -0.031387916181970024, 0.14398934969068627, 0.06564469961655549, 0.043055275030664905, 0.32898465302603863, 0.18193020948942387, 0.033197234568095445, 0.14882106629542313, -0.12103429833938063, -0.0047545260193436285, -0.24598655911096562, -0.1541209531849069, -0.20533644555515684, 0.08732881319754968, -0.06347115862413012, -0.17315916925569816, 0.4023261841518425, 0.1268700100687555, 0.124587300836224, -0.12747498947727304, 0.2459269179509277, 0.06066377870676693, 0.09541627792723939, 0.019360744901232223, 0.31956018626986615, 0.24644502094922077, 0.16872269236606308, -0.3417098379809311, 0.15832517132064147, -0.0065978811482025265] |
707.2704 | Determination of the Mott insulating transition by the multi-reference
density functional theory | It is shown that a momentum-boost technique applied to the extended Kohn-Sham
scheme enables the computational determination of the Mott insulating
transition. Self-consistent solutions are given for correlated electron systems
by the first-principles calculation defined by the multi-reference density
functional theory, in which the effective short-range interaction can be
determined by the fluctuation reference method. An extension of the Harriman
construction is made for the twisted boundary condition in order to define the
momentum-boost technique in the first-principles manner. For an effectively
half-filled-band system, the momentum-boost method tells that the period of a
metallic ground state by the LDA calculation is shortened to the least period
of the insulating phase, indicating occurrence of the Mott insulating
transition.
| cond-mat.str-el | it is shown that a momentumboost technique applied to the extended kohnsham scheme enables the computational determination of the mott insulating transition selfconsistent solutions are given for correlated electron systems by the firstprinciples calculation defined by the multireference density functional theory in which the effective shortrange interaction can be determined by the fluctuation reference method an extension of the harriman construction is made for the twisted boundary condition in order to define the momentumboost technique in the firstprinciples manner for an effectively halffilledband system the momentumboost method tells that the period of a metallic ground state by the lda calculation is shortened to the least period of the insulating phase indicating occurrence of the mott insulating transition | [['it', 'is', 'shown', 'that', 'a', 'momentumboost', 'technique', 'applied', 'to', 'the', 'extended', 'kohnsham', 'scheme', 'enables', 'the', 'computational', 'determination', 'of', 'the', 'mott', 'insulating', 'transition', 'selfconsistent', 'solutions', 'are', 'given', 'for', 'correlated', 'electron', 'systems', 'by', 'the', 'firstprinciples', 'calculation', 'defined', 'by', 'the', 'multireference', 'density', 'functional', 'theory', 'in', 'which', 'the', 'effective', 'shortrange', 'interaction', 'can', 'be', 'determined', 'by', 'the', 'fluctuation', 'reference', 'method', 'an', 'extension', 'of', 'the', 'harriman', 'construction', 'is', 'made', 'for', 'the', 'twisted', 'boundary', 'condition', 'in', 'order', 'to', 'define', 'the', 'momentumboost', 'technique', 'in', 'the', 'firstprinciples', 'manner', 'for', 'an', 'effectively', 'halffilledband', 'system', 'the', 'momentumboost', 'method', 'tells', 'that', 'the', 'period', 'of', 'a', 'metallic', 'ground', 'state', 'by', 'the', 'lda', 'calculation', 'is', 'shortened', 'to', 'the', 'least', 'period', 'of', 'the', 'insulating', 'phase', 'indicating', 'occurrence', 'of', 'the', 'mott', 'insulating', 'transition']] | [-0.13621044814404423, 0.13784864175401668, -0.12739292185996537, 0.053541600257765665, -0.007627738977822921, -0.12605580882695705, 0.08008922719214435, 0.34054304155642573, -0.26133586771624245, -0.2973352102967708, 0.032863875449149184, -0.2691807448863983, -0.14808911428503369, 0.12867476640107192, 0.01937223523247825, 0.054783357240312795, 0.013682284084675105, 0.005659425985473005, -0.13629322617679188, -0.20785278224426768, 0.2953254951123634, 0.04381070402653321, 0.2904999337847466, 0.0683447088074425, 0.03294285889714956, 0.030295778250159777, 0.06506337290655052, 0.01186594718095401, -0.13454232018342263, 0.1052099046236633, 0.2784029857544026, -0.0033701339007719705, 0.2536213575659887, -0.42719979675729636, -0.21883271400710447, -0.021457112335559466, 0.12460840178815567, 0.14374896293890704, -0.004892087104203908, -0.30827478135571534, 0.05967987824393355, -0.22054003482765477, -0.16241053991505633, -0.12410810849194051, -0.012777555725820686, -0.03147880180698374, -0.2754825906261154, 0.08474568078248843, 0.016967266484204192, 0.026240857399028282, -0.12401371279771885, -0.0745610769671064, -0.03958275027411139, 0.07338923259597757, 0.025760878709590304, 0.10015632645834399, 0.11654272238602457, -0.07469532179200779, -0.07538166993459605, 0.3597211733946334, -0.0634597535032536, -0.1423887607163203, 0.13604967511542465, -0.12113947261772726, -0.07124356608230459, 0.2032643783311157, 0.052115457193197115, 0.11603676134153552, -0.1570063559419435, 0.08447957260777121, -0.015439417590285935, 0.19686452032107374, -0.007759026061419559, -0.0018185070027475771, 0.19844305269349286, 0.16620605900559737, 0.0780887115665752, 0.12757834450281022, -0.07758650546691016, -0.09970975523085698, -0.24866687540450821, -0.15648056961236642, -0.2659276053395487, 0.006697823783463758, -0.05505335290065926, -0.21489975143542878, 0.4022663640173129, 0.16327172551385086, 0.11764339804649353, -0.03419850520566916, 0.25199165614929214, 0.16844091443749873, 0.05099320691002978, 0.028961018917312766, 0.23462954118604892, 0.16976488346395932, 0.07083275883418062, -0.27442712178251344, 0.08653698393913067, 0.12883213487372774] |
707.2705 | A self-consistent first-principles calculation scheme for correlated
electron systems | A self-consistent calculation scheme for correlated electron systems is
created based on the density-functional theory (DFT). Our scheme is a
multi-reference DFT (MR-DFT) calculation in which the electron charge density
is reproduced by an auxiliary interacting Fermion system. A short-range
Hubbard-type interaction is introduced by a rigorous manner with a residual
term for the exchange-correlation energy. The Hubbard term is determined
uniquely by referencing the density fluctuation at a selected localized
orbital. This strategy to obtain an extension of the Kohn-Sham scheme provides
a self-consistent electronic structure calculation for the materials design.
Introducing an approximation for the residual exchange-correlation energy
functional, we have the LDA+U energy functional. Practical self-consistent
calculations are exemplified by simulations of Hydrogen systems, i.e. a
molecule and a periodic one-dimensional array, which is a proof of existence of
the interaction strength U as a continuous function of the local fluctuation
and structural parameters of the system.
| cond-mat.str-el | a selfconsistent calculation scheme for correlated electron systems is created based on the densityfunctional theory dft our scheme is a multireference dft mrdft calculation in which the electron charge density is reproduced by an auxiliary interacting fermion system a shortrange hubbardtype interaction is introduced by a rigorous manner with a residual term for the exchangecorrelation energy the hubbard term is determined uniquely by referencing the density fluctuation at a selected localized orbital this strategy to obtain an extension of the kohnsham scheme provides a selfconsistent electronic structure calculation for the materials design introducing an approximation for the residual exchangecorrelation energy functional we have the ldau energy functional practical selfconsistent calculations are exemplified by simulations of hydrogen systems ie a molecule and a periodic onedimensional array which is a proof of existence of the interaction strength u as a continuous function of the local fluctuation and structural parameters of the system | [['a', 'selfconsistent', 'calculation', 'scheme', 'for', 'correlated', 'electron', 'systems', 'is', 'created', 'based', 'on', 'the', 'densityfunctional', 'theory', 'dft', 'our', 'scheme', 'is', 'a', 'multireference', 'dft', 'mrdft', 'calculation', 'in', 'which', 'the', 'electron', 'charge', 'density', 'is', 'reproduced', 'by', 'an', 'auxiliary', 'interacting', 'fermion', 'system', 'a', 'shortrange', 'hubbardtype', 'interaction', 'is', 'introduced', 'by', 'a', 'rigorous', 'manner', 'with', 'a', 'residual', 'term', 'for', 'the', 'exchangecorrelation', 'energy', 'the', 'hubbard', 'term', 'is', 'determined', 'uniquely', 'by', 'referencing', 'the', 'density', 'fluctuation', 'at', 'a', 'selected', 'localized', 'orbital', 'this', 'strategy', 'to', 'obtain', 'an', 'extension', 'of', 'the', 'kohnsham', 'scheme', 'provides', 'a', 'selfconsistent', 'electronic', 'structure', 'calculation', 'for', 'the', 'materials', 'design', 'introducing', 'an', 'approximation', 'for', 'the', 'residual', 'exchangecorrelation', 'energy', 'functional', 'we', 'have', 'the', 'ldau', 'energy', 'functional', 'practical', 'selfconsistent', 'calculations', 'are', 'exemplified', 'by', 'simulations', 'of', 'hydrogen', 'systems', 'ie', 'a', 'molecule', 'and', 'a', 'periodic', 'onedimensional', 'array', 'which', 'is', 'a', 'proof', 'of', 'existence', 'of', 'the', 'interaction', 'strength', 'u', 'as', 'a', 'continuous', 'function', 'of', 'the', 'local', 'fluctuation', 'and', 'structural', 'parameters', 'of', 'the', 'system']] | [-0.1673866708856076, 0.09043442070125214, -0.11156208853858213, 0.0930072862507465, 0.022940750867128372, -0.1187127505398045, 0.07307315096491948, 0.34208332928518453, -0.24037313127308152, -0.29284448898086946, -0.018135845891665666, -0.29317149641613166, -0.13153271802701055, 0.1124830629536882, 0.07505573295289651, 0.043968579744299255, 0.03194812224867443, -0.023364603997518617, -0.13093772802346695, -0.17424013467971236, 0.28168531621185444, 0.10128578109977146, 0.23993261331071455, 0.08054587906226515, 0.07708327246519427, 0.07138187192535649, 0.039256388969370164, 0.023005757307012875, -0.1211953868996352, 0.14058948133296023, 0.23484735182253644, -0.039649633819547794, 0.30750838860093305, -0.45441105573748547, -0.2792636671056971, -0.02911156214152773, 0.08188006366603076, 0.16638168815989046, -0.07698114249147087, -0.27837886651977894, 0.03505225692875683, -0.2279247840649138, -0.15591863381986817, -0.15019789817122123, -0.007490657238910596, 0.0615151139969627, -0.31829926747091425, 0.10999937042593956, -0.013880151375972977, 0.05307075542819803, -0.12277674747786174, -0.10242215058921526, -0.030776008648487427, 0.026132351298971724, -0.016891005532816052, 0.09416782929794863, 0.15568288829488058, -0.08335354833708455, -0.05590426465496421, 0.377606305629015, -0.06944290325356027, -0.1970519015121196, 0.13498613838882495, -0.03389641334768385, -0.10173696218989789, 0.15132636945073805, 0.06329862109230211, 0.09360274809723099, -0.2245871831996677, 0.15851732812123373, -0.019479179602737227, 0.2194078426293951, -0.016284345511036614, 0.046190730845555666, 0.19052230807952583, 0.18494108081484834, 0.06757990979434302, 0.08350875583166878, -0.0876426979368019, -0.11376793495068947, -0.29502061641464633, -0.12154998290662965, -0.2779942278843373, 0.024974508184629183, -0.05619535024879345, -0.23546899265920124, 0.43955471006942387, 0.08714700878908237, 0.0990230199477325, -0.00739376173975567, 0.29601320732928194, 0.1981506833534998, 0.03635350503648321, 0.02787871187242369, 0.20993536780355498, 0.17209444409857194, 0.037616757599947356, -0.2847402195632458, 0.03200519817570845, 0.13177798053560158] |
707.2706 | A weak dichotomy below E_1 \times E_3 | If E is an equivalence relation Borel reducible to E_1 \times E_3 then either
E is Borel reducible to the equality of countable sets of reals or E_1 is Borel
reducible to E. The "either" case admits further strengthening.
| math.LO | if e is an equivalence relation borel reducible to e_1 times e_3 then either e is borel reducible to the equality of countable sets of reals or e_1 is borel reducible to e the either case admits further strengthening | [['if', 'e', 'is', 'an', 'equivalence', 'relation', 'borel', 'reducible', 'to', 'e_1', 'times', 'e_3', 'then', 'either', 'e', 'is', 'borel', 'reducible', 'to', 'the', 'equality', 'of', 'countable', 'sets', 'of', 'reals', 'or', 'e_1', 'is', 'borel', 'reducible', 'to', 'e', 'the', 'either', 'case', 'admits', 'further', 'strengthening']] | [-0.2101278753998952, 0.2096689093581144, -0.06433262523168172, 0.08414921400626788, -0.15905350618637526, -0.19254318242653823, 0.03373948938380449, 0.3347873588164265, -0.39574019906994623, -0.08439724277466154, -0.008516957792334067, -0.35700662453205156, 0.010690977671541847, 0.15914950580246603, -0.13459593233747932, -0.03410003557562446, 0.10129861036936443, 0.13184868525236082, -0.07847361452877522, -0.2832860823911734, 0.33642804087736666, -0.1233668021666698, 0.17613396979868412, 0.08923861131263085, 0.12157011915666935, 0.020443729363763943, 0.054819085981505804, -0.000753392089301577, -0.16448361636736455, 0.01184383662751852, 0.3027149024300086, 0.21118375835701442, 0.21895748485500613, -0.30160178306202096, -0.023909301711962774, 0.3915934274211908, 0.10116102815104219, -0.17750832928010288, 0.14737063673778605, -0.2642769274266007, 0.14583437378183964, -0.1930916207150007, -0.12800415845301288, -0.07192638254939364, 0.23556739354553896, -0.06532040044951898, -0.2840501585832009, 0.005567498887196565, 0.24097163822406378, 0.06942475536981454, -0.011319332982962713, -0.0809697192401076, -0.15212005758896852, -0.014573640255735088, 0.0382190822946051, 0.16526481803231993, 0.003145008204648128, 0.03185786165965673, -0.16371709372227392, 0.4508619624643754, -0.08421966631729634, -0.2805359988258435, 0.17259148677858788, -0.20101849375388178, -0.15596642622198814, 0.15608418556169057, -0.028788484561328705, 0.09561854705978663, 0.02734466312596431, 0.33570620217002356, -0.11977816754369996, 0.08956917331148034, 0.15015702503613937, -0.0795284848755751, 0.14988857426513463, 0.017433087317607343, 0.1266655437170695, 0.10379263309714122, 0.13785875502687234, 0.06849439406337646, -0.3623682393764074, -0.06810833594928949, -0.10786649195525126, 0.2567774926025707, -0.06704575339188942, -0.2084328377714906, 0.30296121112620217, 0.007661375432060315, 0.13130425709562424, 0.1541685060096475, 0.23830901883924618, 0.1734889455166502, -0.06479932410785785, 0.03371720719270599, 0.09562457868686089, 0.2031988270389728, -0.200030817817419, -0.1484578157751224, -0.026139755733311176, 0.20256746421830776] |
707.2707 | A superadditivity and submultiplicativity property for cardinalities of
sumsets | For finite sets of integers $A_1, A_2 ... A_n$ we study the cardinality of
the $n$-fold sumset $A_1+...
+A_n$ compared to those of $n-1$-fold sumsets $A_1+...
+A_{i-1}+A_{i+1}+... A_n$. We prove a superadditivity and a
submultiplicativity property for these quantities. We also examine the case
when the addition of elements is restricted to an addition graph between the
sets.
| math.CO math.AC | for finite sets of integers a_1 a_2 a_n we study the cardinality of the nfold sumset a_1 a_n compared to those of n1fold sumsets a_1 a_i1a_i1 a_n we prove a superadditivity and a submultiplicativity property for these quantities we also examine the case when the addition of elements is restricted to an addition graph between the sets | [['for', 'finite', 'sets', 'of', 'integers', 'a_1', 'a_2', 'a_n', 'we', 'study', 'the', 'cardinality', 'of', 'the', 'nfold', 'sumset', 'a_1', 'a_n', 'compared', 'to', 'those', 'of', 'n1fold', 'sumsets', 'a_1', 'a_i1a_i1', 'a_n', 'we', 'prove', 'a', 'superadditivity', 'and', 'a', 'submultiplicativity', 'property', 'for', 'these', 'quantities', 'we', 'also', 'examine', 'the', 'case', 'when', 'the', 'addition', 'of', 'elements', 'is', 'restricted', 'to', 'an', 'addition', 'graph', 'between', 'the', 'sets']] | [-0.1918525898862364, 0.12833517069131112, -0.034915912380841164, 0.08233227788046601, -0.016645660224769796, -0.11844752479477652, 0.030525044770911336, 0.368289112437716, -0.34992181290207164, -0.09797504209979836, 0.08198975506404947, -0.3637002699709098, -0.07433516041991035, 0.1641956798848696, -0.0800196264504588, 0.036093284542273195, 0.0645770948727399, 0.13981830784385757, -0.07613700442016125, -0.2874304197804512, 0.36989029842828003, -0.13840738033676253, 0.2307176394720695, 0.0401739281868296, 0.02404704866265612, 0.019571112078015825, 0.026261334723260785, -0.00704805802420846, -0.23241144016252033, 0.11943054520192423, 0.25381246513487504, 0.13163370192134088, 0.2663386170087116, -0.3364202627313456, -0.0285294062092102, 0.2591878373641521, 0.20500351353881083, 0.024883954469779774, -0.01802957136533223, -0.192495986648802, 0.18957281523450678, -0.17096172728841857, -0.10587446226937962, -0.04527708560427917, 0.10421404099491026, 0.04985421428240703, -0.38847846797268304, 0.04713936390752289, 0.08170392590441874, 0.08262531776147496, -0.009113477925503892, -0.21696474100463092, 0.0015503856370092503, 0.0896884710595519, 0.028810337530947954, -0.010158968370108466, -0.0007567394017574511, -0.0632199129291361, -0.15324269320990425, 0.378620805617954, -0.014930072149062263, -0.20622338849599536, 0.08898187670690406, -0.19713722350674548, -0.17726592396918153, 0.015380577417090535, 0.06126846233382821, 0.1605081538187473, -0.03157680684281721, 0.1432493274904638, -0.13543454477829592, 0.11217600187020642, 0.12002419395970979, 0.09027294315663832, 0.08611624538752949, 0.04660415344655381, 0.042045566968486776, 0.18784108079437697, 0.0007510856459183353, 0.04199288833686816, -0.38218431309464257, -0.16110496778440261, -0.16600308749392362, 0.13593720496698683, -0.1704342164778479, -0.17180400088961637, 0.33677984847288045, 0.05094021023251116, 0.2309717444836029, 0.13403651201432304, 0.15503518970009672, 0.08084123739640095, 0.06899764365516603, -0.004596467953108784, 0.0848561490919175, 0.2566917340404221, -0.05067316896747798, -0.23211934716008337, -0.016788794247466803, 0.17016897417072738] |
707.2708 | On the self-adjointness of certain reduced Laplace-Beltrami operators | The self-adjointness of the reduced Hamiltonian operators arising from the
Laplace-Beltrami operator of a complete Riemannian manifold through quantum
Hamiltonian reduction based on a compact isometry group is studied. A simple
sufficient condition is provided that guarantees the inheritance of essential
self-adjointness onto a certain class of restricted operators and allows us to
conclude the self-adjointness of the reduced Laplace-Beltrami operators in a
concise way. As a consequence, the self-adjointness of spin Calogero-Sutherland
type reductions of `free' Hamiltonians under polar actions of compact Lie
groups follows immediately.
| math-ph math.MP nlin.SI quant-ph | the selfadjointness of the reduced hamiltonian operators arising from the laplacebeltrami operator of a complete riemannian manifold through quantum hamiltonian reduction based on a compact isometry group is studied a simple sufficient condition is provided that guarantees the inheritance of essential selfadjointness onto a certain class of restricted operators and allows us to conclude the selfadjointness of the reduced laplacebeltrami operators in a concise way as a consequence the selfadjointness of spin calogerosutherland type reductions of free hamiltonians under polar actions of compact lie groups follows immediately | [['the', 'selfadjointness', 'of', 'the', 'reduced', 'hamiltonian', 'operators', 'arising', 'from', 'the', 'laplacebeltrami', 'operator', 'of', 'a', 'complete', 'riemannian', 'manifold', 'through', 'quantum', 'hamiltonian', 'reduction', 'based', 'on', 'a', 'compact', 'isometry', 'group', 'is', 'studied', 'a', 'simple', 'sufficient', 'condition', 'is', 'provided', 'that', 'guarantees', 'the', 'inheritance', 'of', 'essential', 'selfadjointness', 'onto', 'a', 'certain', 'class', 'of', 'restricted', 'operators', 'and', 'allows', 'us', 'to', 'conclude', 'the', 'selfadjointness', 'of', 'the', 'reduced', 'laplacebeltrami', 'operators', 'in', 'a', 'concise', 'way', 'as', 'a', 'consequence', 'the', 'selfadjointness', 'of', 'spin', 'calogerosutherland', 'type', 'reductions', 'of', 'free', 'hamiltonians', 'under', 'polar', 'actions', 'of', 'compact', 'lie', 'groups', 'follows', 'immediately']] | [-0.1664539967588652, 0.08949306912334828, -0.06796083208066465, 0.0835000856795573, -0.16242700141597669, -0.13513067359340258, -0.0024149135670399873, 0.30345788546677294, -0.26645989891612665, -0.20325530084899102, 0.13138996267118544, -0.23218582172616486, -0.1380422555496274, 0.18521837453925233, -0.13166661892386003, 0.03677688898711369, 0.11005089499441714, 0.09451803172157071, -0.1784576282477884, -0.16917667291715913, 0.4136037091756689, 0.01888711195861942, 0.21227462290004753, 0.058973293041612355, 0.10771051503118427, 0.029993309510935998, 0.025832094340424598, -0.03620760307657993, -0.10501692541809712, 0.1296714992749494, 0.2392512283384286, 0.07565084405393264, 0.22793316511190082, -0.43665818985680055, -0.19517173209286498, 0.1330729558121884, 0.11135757171506083, 0.050113102678081084, -0.04302345700535238, -0.32179191797415074, 0.03331714884067575, -0.15643519782942944, -0.20300766354127006, -0.09467338008442144, -0.0002082916854441851, -0.03827053522584082, -0.27178593875904533, 0.05898560324533918, 0.18564727385367813, 0.060432620464299605, -0.11902941546962201, -0.06644080797124696, -0.08441481595837522, 0.1048725706675015, -0.06085770599672507, -0.03465219792085646, 0.12534587307908068, -0.022059844129708135, -0.1011435837945205, 0.4140570656150237, -0.05727446801296767, -0.27994661679726907, 0.1365804457367965, -0.1166759491804452, -0.15610193513633533, 0.10867566623371737, 0.10737690714926555, 0.15478173225861172, -0.1763578279950153, 0.2138441250192526, -0.05940613256574705, 0.0747616121507967, 0.00996468934476718, 0.08374010369545598, 0.09224308892648303, 0.09737116471468203, 0.20520114306703038, 0.12491204025459358, 0.07059629001633275, -0.09678073945166223, -0.37767605367919493, -0.18052630332009545, -0.17368836254256123, 0.16261019944159807, -0.12030131069541207, -0.20389201837035173, 0.4512267178566805, 0.04963547678600098, 0.1594438827449413, 0.07210997948101883, 0.18009722155743632, 0.15237392209023345, 0.11577265491794753, 0.06254533862952015, 0.12721186272543053, 0.2822809031329535, 0.018647890661083077, -0.22427651787915365, -0.05589675703139483, 0.21037116150596533] |
707.2709 | Measuring the Momentum of a Nanomechanical Oscillator through the Use of
Two Tunnel Junctions | We propose a way to measure the momentum p of a nanomechanical oscillator.
The p-detector is based on two tunnel junctions in a Aharonov-Bohm-type setup.
One of the tunneling amplitudes depends on the motion of the oscillator, the
other one not. Although the coupling between the detector and the oscillator is
assumed to be linear in the position x of the oscillator, it turns out that the
finite-frequency noise output of the detector will in general contain a term
proportional to the momentum spectrum of the oscillator. This is a true quantum
phenomenon, which can be realized in practice if the phase of the tunneling
amplitude of the detector is tuned by the Aharonov-Bohm flux Phi to a
p-sensitive value.
| cond-mat.mes-hall | we propose a way to measure the momentum p of a nanomechanical oscillator the pdetector is based on two tunnel junctions in a aharonovbohmtype setup one of the tunneling amplitudes depends on the motion of the oscillator the other one not although the coupling between the detector and the oscillator is assumed to be linear in the position x of the oscillator it turns out that the finitefrequency noise output of the detector will in general contain a term proportional to the momentum spectrum of the oscillator this is a true quantum phenomenon which can be realized in practice if the phase of the tunneling amplitude of the detector is tuned by the aharonovbohm flux phi to a psensitive value | [['we', 'propose', 'a', 'way', 'to', 'measure', 'the', 'momentum', 'p', 'of', 'a', 'nanomechanical', 'oscillator', 'the', 'pdetector', 'is', 'based', 'on', 'two', 'tunnel', 'junctions', 'in', 'a', 'aharonovbohmtype', 'setup', 'one', 'of', 'the', 'tunneling', 'amplitudes', 'depends', 'on', 'the', 'motion', 'of', 'the', 'oscillator', 'the', 'other', 'one', 'not', 'although', 'the', 'coupling', 'between', 'the', 'detector', 'and', 'the', 'oscillator', 'is', 'assumed', 'to', 'be', 'linear', 'in', 'the', 'position', 'x', 'of', 'the', 'oscillator', 'it', 'turns', 'out', 'that', 'the', 'finitefrequency', 'noise', 'output', 'of', 'the', 'detector', 'will', 'in', 'general', 'contain', 'a', 'term', 'proportional', 'to', 'the', 'momentum', 'spectrum', 'of', 'the', 'oscillator', 'this', 'is', 'a', 'true', 'quantum', 'phenomenon', 'which', 'can', 'be', 'realized', 'in', 'practice', 'if', 'the', 'phase', 'of', 'the', 'tunneling', 'amplitude', 'of', 'the', 'detector', 'is', 'tuned', 'by', 'the', 'aharonovbohm', 'flux', 'phi', 'to', 'a', 'psensitive', 'value']] | [-0.18390517635270953, 0.16061861354905038, -0.11265999555461488, 0.024561507831588072, -0.034257042695278836, -0.1592478983467287, 0.031246736811442397, 0.3445576664249776, -0.2459718046583614, -0.26451095948153636, 0.02845953722973749, -0.2791192740344016, -0.13193493411418492, 0.21461933967854702, -0.046199372788038796, 0.013446165706520364, 0.038386899543831406, 0.0917957122200879, -0.04397336803021509, -0.19124609374015009, 0.30110539450168106, 0.060372595483155024, 0.272843216995756, 0.02238951799049342, 0.11671404953418552, -0.0296076023477619, 0.05015179603281668, 0.0032267553960683487, -0.08900666881138825, 0.06743171532496305, 0.20764131547283318, 0.019285602392470937, 0.22902332991361618, -0.3948591459321521, -0.14979618059281827, 0.12153151878392544, 0.11389014672614255, 0.12278520820516367, 0.03219100447584701, -0.2737747982807331, 0.010291344099441322, -0.1518472345897107, -0.1018653021280859, -0.0180634340918544, 0.01864378051674467, 0.008208427254615699, -0.2598542432671697, 0.04558150066946775, 0.05689034014407514, -0.019742216157206033, 0.004741207402499424, -0.05446129815822657, -0.026092105418822523, 0.08104686088607473, 0.01018601395900093, 0.051842472914574764, 0.1707150229742214, -0.12486553786350098, -0.08145022069861702, 0.3689479472064334, -0.09553166285899105, -0.2519654667687403, 0.11586293527240848, -0.20402747902119436, -0.03898023430088345, 0.12316577805806014, 0.11473934462893817, 0.0893316300192101, -0.16835129096062254, 0.09752750248693609, 0.014911255672952886, 0.1948954200971935, 0.05196460588318217, 0.04072950129699104, 0.2258230854236221, 0.17189617724339398, 0.08727264678218181, 0.15166904710842913, -0.14457890815747768, -0.07578046868409236, -0.3405249430403366, -0.14160855069472375, -0.22783492844536016, 0.0910218668317519, -0.025238690964785853, -0.1734993696544256, 0.4297304662354922, 0.13567554324439143, 0.21439050214554548, -0.036518351511311546, 0.2980605678759136, 0.20134886354207993, 0.09606778484441623, -0.010407112100777232, 0.3135431631422854, 0.1632188102250161, 0.10750671585043103, -0.2972002614415803, 0.024208141380321173, 0.014976985930165245] |
707.271 | Local cloning of genuine entangled states of three qubit | We discuss (im)possibility of the exact cloning of orthogonal but genuinely
entangled three qubit states aided with entangled ancila under local operation
and classical communication. Whereas any two orthogonal GHZ states taken from
the canonical GHZ basis, can be cloned with the help of a known GHZ state,
surprisingly we find that no two W states can be cloned by using any known
three qubit (possibly entangled) state as blank copy.
| quant-ph | we discuss impossibility of the exact cloning of orthogonal but genuinely entangled three qubit states aided with entangled ancila under local operation and classical communication whereas any two orthogonal ghz states taken from the canonical ghz basis can be cloned with the help of a known ghz state surprisingly we find that no two w states can be cloned by using any known three qubit possibly entangled state as blank copy | [['we', 'discuss', 'impossibility', 'of', 'the', 'exact', 'cloning', 'of', 'orthogonal', 'but', 'genuinely', 'entangled', 'three', 'qubit', 'states', 'aided', 'with', 'entangled', 'ancila', 'under', 'local', 'operation', 'and', 'classical', 'communication', 'whereas', 'any', 'two', 'orthogonal', 'ghz', 'states', 'taken', 'from', 'the', 'canonical', 'ghz', 'basis', 'can', 'be', 'cloned', 'with', 'the', 'help', 'of', 'a', 'known', 'ghz', 'state', 'surprisingly', 'we', 'find', 'that', 'no', 'two', 'w', 'states', 'can', 'be', 'cloned', 'by', 'using', 'any', 'known', 'three', 'qubit', 'possibly', 'entangled', 'state', 'as', 'blank', 'copy']] | [-0.17688130135980568, 0.2203114908787289, -0.06809533882353987, 0.013958219332354409, 0.01617927790752479, -0.3041527887207589, 0.1037146072568638, 0.38615809769502707, -0.20873865144593376, -0.26128838966999735, 0.10656747605285741, -0.2052256251419229, -0.06004308078970228, 0.17750288546085358, -0.008456941893590348, 0.06287312499979245, 0.10922426323273353, 0.024547948854576264, -0.06639475931213902, -0.2348866632075182, 0.3259349889920226, -0.02760198547039181, 0.3020436740879502, -0.08367054968423743, 0.10455757458029048, 0.014081343403086066, 0.029458655709666864, -0.009243566063897951, -0.005463715723038019, 0.06282953610061667, 0.32052554684757656, 0.1914498490081834, 0.21941649102206742, -0.43342859936611994, -0.17240107373467514, 0.15004565528693742, 0.12008559235504696, 0.2046989596714931, 0.03031876641658268, -0.35608827219361305, 0.010334183611433088, -0.18946306388159947, -0.11510147615335882, -0.06762982770534498, -0.04929669564589858, -0.05249513416950192, -0.22298462835273572, 0.10357562199767147, 0.05287585762063307, 0.0013427985299910817, -0.03523958903138659, -0.11083296222745308, -0.057546807692519256, 0.13378328996311342, -0.1271367371082306, 0.033868366266999926, 0.12050312756826835, -0.09178881769600723, -0.26254301382494827, 0.30170034862655615, -0.042526530993304085, -0.20739998610224575, 0.19955363803144013, -0.12162977892107198, -0.11517642637315606, 0.07990622057446412, 0.04322052169591188, 0.05204151179641485, -0.10586482708209327, 0.012142263352039403, -0.07340933507574456, 0.2564201107049095, 0.13832649565967067, 0.1822481664147095, 0.18232297994462507, -0.03237851467648787, 0.10283335809861975, 0.24317634956844683, -0.06891741526446173, -0.09557522728240915, -0.3144870291863169, -0.15992464192178366, -0.22951015178114176, 0.1872869779355824, -0.027545318492879493, -0.058460451662540436, 0.41459039436387163, 0.0492085073301236, 0.12444483909223761, -0.00694409775980083, 0.27523330162678444, 0.06443217833626218, 0.07315671831103308, 0.1506991922589285, 0.26728825736790895, 0.14379760431391853, -0.015150167812992419, -0.19879751264982456, 0.04073469694038587, -0.047231237989451204] |
707.2711 | Transport properties of chemically synthesized polypyrrole thin films | The electronic transport in polypyrrole thin films synthesized chemically
from the vapor phase is studied as a function of temperature as well as of
electric and magnetic fields. We find distinct differences in comparison to the
behavior of both polypyrrole films prepared by electrochemical growth as well
as of the bulk films obtained from conventional chemical synthesis. For small
electric fields F, a transition from Efros-Shklovskii variable range hopping to
Arrhenius activated transport is observed at 30 K. High electric fields induce
short range hopping. The characteristic hopping distance is found to be
proportional to F^(-1/2). The magnetoresistance R(B) is independent of F below
a critical magnetic field, above which F counteracts the magnetic field induced
localization.
| cond-mat.dis-nn cond-mat.mtrl-sci | the electronic transport in polypyrrole thin films synthesized chemically from the vapor phase is studied as a function of temperature as well as of electric and magnetic fields we find distinct differences in comparison to the behavior of both polypyrrole films prepared by electrochemical growth as well as of the bulk films obtained from conventional chemical synthesis for small electric fields f a transition from efrosshklovskii variable range hopping to arrhenius activated transport is observed at 30 k high electric fields induce short range hopping the characteristic hopping distance is found to be proportional to f12 the magnetoresistance rb is independent of f below a critical magnetic field above which f counteracts the magnetic field induced localization | [['the', 'electronic', 'transport', 'in', 'polypyrrole', 'thin', 'films', 'synthesized', 'chemically', 'from', 'the', 'vapor', 'phase', 'is', 'studied', 'as', 'a', 'function', 'of', 'temperature', 'as', 'well', 'as', 'of', 'electric', 'and', 'magnetic', 'fields', 'we', 'find', 'distinct', 'differences', 'in', 'comparison', 'to', 'the', 'behavior', 'of', 'both', 'polypyrrole', 'films', 'prepared', 'by', 'electrochemical', 'growth', 'as', 'well', 'as', 'of', 'the', 'bulk', 'films', 'obtained', 'from', 'conventional', 'chemical', 'synthesis', 'for', 'small', 'electric', 'fields', 'f', 'a', 'transition', 'from', 'efrosshklovskii', 'variable', 'range', 'hopping', 'to', 'arrhenius', 'activated', 'transport', 'is', 'observed', 'at', '30', 'k', 'high', 'electric', 'fields', 'induce', 'short', 'range', 'hopping', 'the', 'characteristic', 'hopping', 'distance', 'is', 'found', 'to', 'be', 'proportional', 'to', 'f12', 'the', 'magnetoresistance', 'rb', 'is', 'independent', 'of', 'f', 'below', 'a', 'critical', 'magnetic', 'field', 'above', 'which', 'f', 'counteracts', 'the', 'magnetic', 'field', 'induced', 'localization']] | [-0.15610396516366074, 0.2715589708258581, -0.001964428140453469, -0.010746713309811477, -0.01254291290170553, -0.14123213871055815, 0.06932728786546832, 0.3935273757689975, -0.31662716907568467, -0.34169089555358273, -0.0012528833586913652, -0.27567924751748896, -0.0775982102828944, 0.21598629971854708, 0.04393307391840678, -0.009747015244653847, -0.0968694925491308, -0.00949921870492717, -0.06453381358192135, -0.1604017103511271, 0.23941416029905915, 0.007592343653623874, 0.3210807353353653, 0.07250631228885335, 0.04754508189104784, -0.040036870112431705, 0.1392214811192109, 0.07744785114470074, -0.13729766525057518, -0.019629702250608522, 0.24642603212378472, -0.11234966846354331, 0.17527643074958116, -0.4119092624765845, -0.26283318894859564, 0.03117493572087688, 0.13513769044811463, 0.0937141813049252, -0.09468555371635236, -0.23044209575487506, 0.06238388117406772, -0.09100375638212053, -0.09887499935152885, -0.07889544343352954, 0.038107581418724015, 0.06789418145403282, -0.31832918622501144, 0.12031742584574212, 0.009291523256593853, 0.14238602028658184, -0.12090018391609192, -0.16772509401297978, -0.09117763568687005, 0.08272740244069415, 0.08120090722178037, 0.12187462855870716, 0.2567077167889374, -0.11702617448078007, -0.03726374205902346, 0.3349748828406565, -0.14109686416629544, -0.04607845303944798, 0.17860798029085764, -0.19545902735673082, 0.0020132952321989415, 0.20657103094789717, 0.1140150499299296, 0.15087667293448606, -0.17962801780424312, 0.08410091097934298, 0.04419696076701467, 0.1591702815797976, 0.08284203457431151, 0.03653622278943658, 0.21517710755161273, 0.1847710757253644, 0.00969621218327019, 0.15235333116307187, -0.10328740693835749, -0.026359526225580618, -0.22378952193977392, -0.15025374081590745, -0.2370686454491483, 0.12976368344137665, -0.08624221183522306, -0.23951385053209004, 0.37758092334669113, 0.13373311234908736, 0.19977290683195123, -0.050361685961301826, 0.22336491149189508, 0.12185068208322279, 0.08716166670171496, 0.011861086624045657, 0.2336945902619861, 0.2156192588253727, 0.17822698290217528, -0.2567136778563866, 0.10278316143637475, -0.006630110263856303] |
707.2712 | Metastable Vacua and Complex Deformations | We use the non-normalizable complex deformations to describe the stringy
realizations of the metastable vacua in N = 1, SU(N_c) SUSY theories with N_f >
N_c massive fundamental flavors. The consideration of the non-normalizable
deformations requires a modified Toric duality. The new approach considers the
tachyon condensation between pairs of wrapped D5 branes and anti D5 branes and
the resulting mixing between some cycles in the geometry. We enlarge the class
of metastable vacua to the case of branes-antibranes wrapped on cycles of
deformed A_n singularities.
| hep-th | we use the nonnormalizable complex deformations to describe the stringy realizations of the metastable vacua in n 1 sun_c susy theories with n_f n_c massive fundamental flavors the consideration of the nonnormalizable deformations requires a modified toric duality the new approach considers the tachyon condensation between pairs of wrapped d5 branes and anti d5 branes and the resulting mixing between some cycles in the geometry we enlarge the class of metastable vacua to the case of branesantibranes wrapped on cycles of deformed a_n singularities | [['we', 'use', 'the', 'nonnormalizable', 'complex', 'deformations', 'to', 'describe', 'the', 'stringy', 'realizations', 'of', 'the', 'metastable', 'vacua', 'in', 'n', '1', 'sun_c', 'susy', 'theories', 'with', 'n_f', 'n_c', 'massive', 'fundamental', 'flavors', 'the', 'consideration', 'of', 'the', 'nonnormalizable', 'deformations', 'requires', 'a', 'modified', 'toric', 'duality', 'the', 'new', 'approach', 'considers', 'the', 'tachyon', 'condensation', 'between', 'pairs', 'of', 'wrapped', 'd5', 'branes', 'and', 'anti', 'd5', 'branes', 'and', 'the', 'resulting', 'mixing', 'between', 'some', 'cycles', 'in', 'the', 'geometry', 'we', 'enlarge', 'the', 'class', 'of', 'metastable', 'vacua', 'to', 'the', 'case', 'of', 'branesantibranes', 'wrapped', 'on', 'cycles', 'of', 'deformed', 'a_n', 'singularities']] | [-0.19951928651566248, 0.23687106222811952, -0.055676216753311907, 0.13791222523628588, -0.026280510559094597, -0.17735574425321565, 0.022668963915343027, 0.2646063098975693, -0.1335322368800281, -0.21752611965962113, 0.034428324872986915, -0.2664973309276912, -0.1275684854986303, 0.02813400631119688, -0.11687118480408407, -0.012898638906204197, -0.002199984705412244, 0.016382933324988348, -0.12053568728537445, -0.28986589545776775, 0.3950880378574492, -0.042944391269281686, 0.3077417463961854, 0.007014182183038758, 0.065676490198372, -0.009256507107337197, 0.04170023992163948, -0.04795094364019761, -0.17268884571897516, 0.14249460766069502, 0.2239340497293027, 0.06956832965342216, 0.04672957923128662, -0.46744145825505257, -0.18115470401314368, 0.14062108244208327, 0.2081782380890393, 0.16039259365972985, 0.027606876660979926, -0.27223162100852344, 0.04917387028101338, -0.15931622868022285, -0.2313108383172966, -0.06728780411284821, 0.029008501635707288, -0.08427373488175582, -0.22868450906082807, 0.03232070528453283, -0.011727527670382735, 0.028088075411786515, -0.014600998542484749, -0.07811522522537284, -0.13278762879500905, 0.05869165217750762, 0.17836231886442885, -0.027059524011495244, 0.13003954936537038, -0.21609103622431136, -0.12439698692276535, 0.3332850302692996, -0.01898138135873589, -0.22746778611677237, 0.17483002436627826, -0.13412010461563267, -0.17573360636190746, 0.13371721834662448, 0.08134071003710178, 0.23730827788878456, -0.01343048141753099, 0.25009394586731465, -0.007827731072397745, 0.12141294414121433, 0.16798271736724818, 0.04773845147700554, 0.3070906661675278, 0.1473844283602638, 0.019044253952711462, 0.1582497436323039, -0.02807758034610874, -0.17860576454536, -0.44037876610296317, -0.11736497258857252, -0.07382401439967196, 0.16350047318657568, -0.1762342947722463, -0.19315514742138695, 0.35148711513772785, 0.02598641217820885, 0.19572964138126966, 0.013225612443793252, 0.14511289721192142, 0.0006446464054555778, 0.03875571332243552, 0.0007912695003920291, 0.20635514311016964, 0.1863202842903402, 0.08690435750163104, -0.29299743770879794, -0.24779712883418942, 0.20539322810202656] |
707.2713 | Normal versus inverted hierarchical models within $\mu-\tau$ symmetry | We make a theoretical attempt to compare the predictions from normal and
inverted hierarchical models, within the framework of $\mu-\tau$ symmetry. We
consider three major theoretical issues in a self consistent ways, viz.,
predictions on neutrino mass and mixing parameters, stability under RG analysis
in MSSM, and baryogenesis through leptogenesis. We further extend our earlier
works on parametrisation of neutrino mass matrices using only two parameters,
in addition to an overall mass scale $m_0$, and the ratio of these two
parameters fixes the value of solar mixing angle. Such parametrisation though
phenomenological gives a firm handle on the analysis of the mass matrices and
predicts lower values of solar mixing angle in the range
$\tan^2\theta_{12}=0.50-0.35$.We check the stability of the model under
radiative corrections in MSSM for large $\tan\beta\sim 58-60$ region and
observe that the evolution of $\bigtriangleup m^2_{21}$ with energy scale, is
highly dependent on the input high scale value of solar mixing angle. Solar
angle predicted by tri-bimaximal mixings and also values lower than this, do
not lead to stability of the model. Similarly, the evolution of the atmospheric
mixing angle with energy scale at large $\tan\beta$ values, shows sharp
decrease for the case with non-zero value of m_3. We apply these mass matrices
to estimate the baryon asymmetry of the universe in a self consistent way and
find that normal hierarchical model leads to the best result. Considering all
these three pieces of theoretical investigations, we may conclude that normal
hierarchical model is more favourable in nature.
| hep-ph | we make a theoretical attempt to compare the predictions from normal and inverted hierarchical models within the framework of mutau symmetry we consider three major theoretical issues in a self consistent ways viz predictions on neutrino mass and mixing parameters stability under rg analysis in mssm and baryogenesis through leptogenesis we further extend our earlier works on parametrisation of neutrino mass matrices using only two parameters in addition to an overall mass scale m_0 and the ratio of these two parameters fixes the value of solar mixing angle such parametrisation though phenomenological gives a firm handle on the analysis of the mass matrices and predicts lower values of solar mixing angle in the range tan2theta_12050035we check the stability of the model under radiative corrections in mssm for large tanbetasim 5860 region and observe that the evolution of bigtriangleup m2_21 with energy scale is highly dependent on the input high scale value of solar mixing angle solar angle predicted by tribimaximal mixings and also values lower than this do not lead to stability of the model similarly the evolution of the atmospheric mixing angle with energy scale at large tanbeta values shows sharp decrease for the case with nonzero value of m_3 we apply these mass matrices to estimate the baryon asymmetry of the universe in a self consistent way and find that normal hierarchical model leads to the best result considering all these three pieces of theoretical investigations we may conclude that normal hierarchical model is more favourable in nature | [['we', 'make', 'a', 'theoretical', 'attempt', 'to', 'compare', 'the', 'predictions', 'from', 'normal', 'and', 'inverted', 'hierarchical', 'models', 'within', 'the', 'framework', 'of', 'mutau', 'symmetry', 'we', 'consider', 'three', 'major', 'theoretical', 'issues', 'in', 'a', 'self', 'consistent', 'ways', 'viz', 'predictions', 'on', 'neutrino', 'mass', 'and', 'mixing', 'parameters', 'stability', 'under', 'rg', 'analysis', 'in', 'mssm', 'and', 'baryogenesis', 'through', 'leptogenesis', 'we', 'further', 'extend', 'our', 'earlier', 'works', 'on', 'parametrisation', 'of', 'neutrino', 'mass', 'matrices', 'using', 'only', 'two', 'parameters', 'in', 'addition', 'to', 'an', 'overall', 'mass', 'scale', 'm_0', 'and', 'the', 'ratio', 'of', 'these', 'two', 'parameters', 'fixes', 'the', 'value', 'of', 'solar', 'mixing', 'angle', 'such', 'parametrisation', 'though', 'phenomenological', 'gives', 'a', 'firm', 'handle', 'on', 'the', 'analysis', 'of', 'the', 'mass', 'matrices', 'and', 'predicts', 'lower', 'values', 'of', 'solar', 'mixing', 'angle', 'in', 'the', 'range', 'tan2theta_12050035we', 'check', 'the', 'stability', 'of', 'the', 'model', 'under', 'radiative', 'corrections', 'in', 'mssm', 'for', 'large', 'tanbetasim', '5860', 'region', 'and', 'observe', 'that', 'the', 'evolution', 'of', 'bigtriangleup', 'm2_21', 'with', 'energy', 'scale', 'is', 'highly', 'dependent', 'on', 'the', 'input', 'high', 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707.2714 | Time Dependent Local Field Distribution and Metastable States in the
SK-Spin-Glass | Different sets of metastable states can be reached in glassy systems below
some transition temperature depending on initial conditions and details of the
dynamics. This is investigated for the Sherrington-Kirkpatrick spin glass model
with long ranged interactions. In particular, the time dependent local field
distribution and energy are calculated for zero temperature. This is done for a
system quenched to zero temperature, slow cooling or simulated annealing, a
greedy algorithm and repeated tapping. Results are obtained from Monte-Carlo
simulations and a Master-Fokker-Planck approach. A comparison with replica
symmetry broken theory, evaluated in high orders, shows that the energies
obtained via dynamics are higher than the ground state energy of replica
theory. Tapping and simulated annealing yield on the other hand results which
are very close to the ground state energy. The local field distribution tends
to zero for small fields. This is in contrast to the Edwards flat measure
hypothesis. The distribution of energies obtained for different tapping
strengths does again not follow the canonical form proposed by Edwards.
| cond-mat.dis-nn cond-mat.stat-mech | different sets of metastable states can be reached in glassy systems below some transition temperature depending on initial conditions and details of the dynamics this is investigated for the sherringtonkirkpatrick spin glass model with long ranged interactions in particular the time dependent local field distribution and energy are calculated for zero temperature this is done for a system quenched to zero temperature slow cooling or simulated annealing a greedy algorithm and repeated tapping results are obtained from montecarlo simulations and a masterfokkerplanck approach a comparison with replica symmetry broken theory evaluated in high orders shows that the energies obtained via dynamics are higher than the ground state energy of replica theory tapping and simulated annealing yield on the other hand results which are very close to the ground state energy the local field distribution tends to zero for small fields this is in contrast to the edwards flat measure hypothesis the distribution of energies obtained for different tapping strengths does again not follow the canonical form proposed by edwards | [['different', 'sets', 'of', 'metastable', 'states', 'can', 'be', 'reached', 'in', 'glassy', 'systems', 'below', 'some', 'transition', 'temperature', 'depending', 'on', 'initial', 'conditions', 'and', 'details', 'of', 'the', 'dynamics', 'this', 'is', 'investigated', 'for', 'the', 'sherringtonkirkpatrick', 'spin', 'glass', 'model', 'with', 'long', 'ranged', 'interactions', 'in', 'particular', 'the', 'time', 'dependent', 'local', 'field', 'distribution', 'and', 'energy', 'are', 'calculated', 'for', 'zero', 'temperature', 'this', 'is', 'done', 'for', 'a', 'system', 'quenched', 'to', 'zero', 'temperature', 'slow', 'cooling', 'or', 'simulated', 'annealing', 'a', 'greedy', 'algorithm', 'and', 'repeated', 'tapping', 'results', 'are', 'obtained', 'from', 'montecarlo', 'simulations', 'and', 'a', 'masterfokkerplanck', 'approach', 'a', 'comparison', 'with', 'replica', 'symmetry', 'broken', 'theory', 'evaluated', 'in', 'high', 'orders', 'shows', 'that', 'the', 'energies', 'obtained', 'via', 'dynamics', 'are', 'higher', 'than', 'the', 'ground', 'state', 'energy', 'of', 'replica', 'theory', 'tapping', 'and', 'simulated', 'annealing', 'yield', 'on', 'the', 'other', 'hand', 'results', 'which', 'are', 'very', 'close', 'to', 'the', 'ground', 'state', 'energy', 'the', 'local', 'field', 'distribution', 'tends', 'to', 'zero', 'for', 'small', 'fields', 'this', 'is', 'in', 'contrast', 'to', 'the', 'edwards', 'flat', 'measure', 'hypothesis', 'the', 'distribution', 'of', 'energies', 'obtained', 'for', 'different', 'tapping', 'strengths', 'does', 'again', 'not', 'follow', 'the', 'canonical', 'form', 'proposed', 'by', 'edwards']] | [-0.11093177129736259, 0.21113737108784594, -0.1322551126501085, 0.08962653193988704, 0.013742713320035753, -0.14860255643829337, 0.047367958345040234, 0.3908571390521025, -0.23078941672463857, -0.3105248535499586, 0.08220187535681318, -0.2532035061490855, -0.04348463776183226, 0.17549086203854086, 0.03381358852077808, 0.0411642301561577, 0.035444684081345, 0.05376581752179412, -0.10862832141650697, -0.23003096982193666, 0.2810528497100763, 0.06984458786124985, 0.34151775879131274, 0.04168600313243501, 0.06870337318590221, 0.013600803971625976, 0.06902789472812965, 0.05125293970507171, -0.14506792471283483, 0.02256279861536487, 0.1979989537157096, 0.03219146625183168, 0.22028633157467647, -0.4401371322040047, -0.229675899542469, 0.10627631707965131, 0.09811953240811515, 0.14483254846847904, -0.040863101571587665, -0.2688879158314584, 0.07002193327233337, -0.13000058078406646, -0.15417182550854272, -0.09595133849818792, -0.023723853499090876, 0.03474316390771123, -0.25764780315027264, 0.10689204173277608, 0.02662839361957075, 0.07923912365056042, -0.11018442185429324, -0.1449699175088123, -0.05248889700132644, 0.09306066238128724, 0.059484659818865894, 0.05122524500447547, 0.17490298515587624, -0.11940033446825553, -0.08559050575491883, 0.3407876518973526, -0.07718111508308668, -0.1375487135041372, 0.23680048304266252, -0.13885422427570338, -0.10678527192378949, 0.17951000440959997, 0.10760544196403186, 0.11113249791032147, -0.12974751574940802, 0.05038151685862215, 0.022492973724313612, 0.175398449445354, 0.045367474462615236, -0.015676500079626704, 0.17797677519099256, 0.14956768159061626, 0.023641180978821858, 0.14129354487072088, -0.06717612091285576, -0.18590502620818802, -0.25328899638372515, -0.11232604355748099, -0.2600369348670245, 0.04705843082332909, -0.07714317476477715, -0.14250932117249163, 0.3725628376359098, 0.1486231525888711, 0.2040094927069731, 0.07812397618198745, 0.2690661003219984, 0.14243975774540255, 0.023946373555060876, 0.05524928713843803, 0.24845850898851668, 0.11708756555578605, 0.10093550338032878, -0.22783364788102473, 0.044699962586275344, 0.014942934387363493] |
707.2715 | Condensation of Ideal Bose Gas Confined in a Box Within a Canonical
Ensemble | We set up recursion relations for the partition function and the ground-state
occupancy for a fixed number of non-interacting bosons confined in a square box
potential and determine the temperature dependence of the specific heat and the
particle number in the ground state. A proper semiclassical treatment is set up
which yields the correct small-T-behavior in contrast to an earlier theory in
Feynman's textbook on Statistical Mechanics, in which the special role of the
ground state was ignored. The results are compared with an exact quantum
mechanical treatment. Furthermore, we derive the finite-size effect of the
system.
| cond-mat.stat-mech | we set up recursion relations for the partition function and the groundstate occupancy for a fixed number of noninteracting bosons confined in a square box potential and determine the temperature dependence of the specific heat and the particle number in the ground state a proper semiclassical treatment is set up which yields the correct smalltbehavior in contrast to an earlier theory in feynmans textbook on statistical mechanics in which the special role of the ground state was ignored the results are compared with an exact quantum mechanical treatment furthermore we derive the finitesize effect of the system | [['we', 'set', 'up', 'recursion', 'relations', 'for', 'the', 'partition', 'function', 'and', 'the', 'groundstate', 'occupancy', 'for', 'a', 'fixed', 'number', 'of', 'noninteracting', 'bosons', 'confined', 'in', 'a', 'square', 'box', 'potential', 'and', 'determine', 'the', 'temperature', 'dependence', 'of', 'the', 'specific', 'heat', 'and', 'the', 'particle', 'number', 'in', 'the', 'ground', 'state', 'a', 'proper', 'semiclassical', 'treatment', 'is', 'set', 'up', 'which', 'yields', 'the', 'correct', 'smalltbehavior', 'in', 'contrast', 'to', 'an', 'earlier', 'theory', 'in', 'feynmans', 'textbook', 'on', 'statistical', 'mechanics', 'in', 'which', 'the', 'special', 'role', 'of', 'the', 'ground', 'state', 'was', 'ignored', 'the', 'results', 'are', 'compared', 'with', 'an', 'exact', 'quantum', 'mechanical', 'treatment', 'furthermore', 'we', 'derive', 'the', 'finitesize', 'effect', 'of', 'the', 'system']] | [-0.09105903765400096, 0.13582565825618076, -0.07367954302268724, 0.06039298356457342, -0.020476780455889337, -0.08959463175172762, 0.0859561355233988, 0.3025859478317822, -0.21553091123496415, -0.3074274988224109, 0.03157081811878015, -0.31217453189068084, -0.08494482686122258, 0.18017619920889652, -0.013753890535250926, 0.09776529572263826, 0.03542967394605512, 0.10486883470972923, -0.0767606070827848, -0.21919099058141, 0.29441212902990327, 0.05113402164594542, 0.2876464950774486, 0.05766257609502645, 0.06537088605788692, 0.05943034204392461, 0.034464372026074365, 0.042061932084228225, -0.15189012560100915, 0.05424615444887119, 0.1767407378841502, 0.03663143728651145, 0.2545421174339329, -0.42928058256317553, -0.17871124871696034, 0.08656626294153587, 0.12322907678996368, 0.17340797083064294, -0.015138272231221587, -0.2558224418705019, 0.008108055810832107, -0.18879050116326349, -0.15084220670178183, -0.07871849915439573, 0.007915425960770031, -0.006155027435549225, -0.23555715296727917, 0.09545838072275122, 0.04695191731055578, 0.06613637462335949, -0.07717110701681425, -0.12950190595074673, 0.007586045797021749, 0.1610736423996665, 0.0017037974588068512, 0.05649694905999544, 0.1070038125035353, -0.17159905024952118, -0.0868990849655044, 0.3840148698557944, -0.025912069533660542, -0.23675039627899727, 0.17016982161051905, -0.14142522561693718, -0.11667486588218405, 0.12151427171799394, 0.11749891428432117, 0.09726370926849388, -0.15599311709714433, 0.0993040493697966, -0.046995227108709514, 0.14519962167347936, 0.02200174719231048, 0.04406999129181107, 0.20267822588599907, 0.13072726230408685, 0.02511303237406537, 0.18095346467695586, -0.0834620991833314, -0.16404739952607392, -0.3475602781982161, -0.18240442160337503, -0.2095042402506806, 0.06301504798708872, -0.08138292786755603, -0.2117654590983875, 0.3832470335570785, 0.1505896843326203, 0.1692849635874154, 0.047417402308686483, 0.23819962099272138, 0.1849530879192874, 0.009018069395096973, 0.03792295812309021, 0.2406169211511345, 0.14701662631947934, 0.04272184131029159, -0.288230144874736, 0.0036513439748280994, 0.09284859329151611] |
707.2716 | High-Frequency Oscillations in a Solar Active Region observed with the
Rapid Dual Imager | High-cadence, synchronized, multiwavelength optical observations of a solar
active region (NOAA 10794) are presented. The data were obtained with the Dunn
Solar Telescope at the National Solar Observatory/Sacramento Peak using a newly
developed camera system : the Rapid Dual Imager. Wavelet analysis is undertaken
to search for intensity related oscillatory signatures, and periodicities
ranging from 20 to 370 s are found with significance levels exceeding 95%.
Observations in the H-alpha blue wing show more penumbral oscillatory phenomena
when compared to simultaneous G-band observations. The H-alpha oscillations are
interpreted as the signatures of plasma motions with a mean velocity of 20
km/s. The strong oscillatory power over H-alpha blue-wing and G-band penumbral
bright grains is an indication of the Evershed flow with frequencies higher
than previously reported.
| astro-ph | highcadence synchronized multiwavelength optical observations of a solar active region noaa 10794 are presented the data were obtained with the dunn solar telescope at the national solar observatorysacramento peak using a newly developed camera system the rapid dual imager wavelet analysis is undertaken to search for intensity related oscillatory signatures and periodicities ranging from 20 to 370 s are found with significance levels exceeding 95 observations in the halpha blue wing show more penumbral oscillatory phenomena when compared to simultaneous gband observations the halpha oscillations are interpreted as the signatures of plasma motions with a mean velocity of 20 kms the strong oscillatory power over halpha bluewing and gband penumbral bright grains is an indication of the evershed flow with frequencies higher than previously reported | [['highcadence', 'synchronized', 'multiwavelength', 'optical', 'observations', 'of', 'a', 'solar', 'active', 'region', 'noaa', '10794', 'are', 'presented', 'the', 'data', 'were', 'obtained', 'with', 'the', 'dunn', 'solar', 'telescope', 'at', 'the', 'national', 'solar', 'observatorysacramento', 'peak', 'using', 'a', 'newly', 'developed', 'camera', 'system', 'the', 'rapid', 'dual', 'imager', 'wavelet', 'analysis', 'is', 'undertaken', 'to', 'search', 'for', 'intensity', 'related', 'oscillatory', 'signatures', 'and', 'periodicities', 'ranging', 'from', '20', 'to', '370', 's', 'are', 'found', 'with', 'significance', 'levels', 'exceeding', '95', 'observations', 'in', 'the', 'halpha', 'blue', 'wing', 'show', 'more', 'penumbral', 'oscillatory', 'phenomena', 'when', 'compared', 'to', 'simultaneous', 'gband', 'observations', 'the', 'halpha', 'oscillations', 'are', 'interpreted', 'as', 'the', 'signatures', 'of', 'plasma', 'motions', 'with', 'a', 'mean', 'velocity', 'of', '20', 'kms', 'the', 'strong', 'oscillatory', 'power', 'over', 'halpha', 'bluewing', 'and', 'gband', 'penumbral', 'bright', 'grains', 'is', 'an', 'indication', 'of', 'the', 'evershed', 'flow', 'with', 'frequencies', 'higher', 'than', 'previously', 'reported']] | [-0.0947175125675276, 0.17069147271721158, -0.02204856922850013, 0.07761009251885116, -0.0964604350887239, -0.11035142041370273, -0.002140394207090139, 0.433029192943126, -0.1600946655301377, -0.3714031253494322, 0.10484042338561267, -0.3129910263121128, -0.08946004890650511, 0.2692398524377495, -0.02990909061045386, 0.0020899397293105723, 0.13557723232358693, -0.0595766871329397, 0.021435855373740195, -0.15059450422413648, 0.15292875815555454, 0.11491328091174365, 0.2432932227924466, -0.06352997688157484, 0.049409238803200424, -0.16094169480539858, -0.10439645563066005, 0.013268490651622415, -0.10798098985245451, 0.028493863012641667, 0.22997711526788772, 0.07074572893371806, 0.22843467787466942, -0.39127488555759193, -0.20719258137885482, 0.012345188081264495, 0.17710609875246883, -0.0464377330802381, 0.007929765803157351, -0.36804633075743914, 0.05669595062546432, -0.08452718023210765, -0.160324506290257, 0.07874410271644593, 0.0513960265442729, 0.04124677442014217, -0.27355594032723457, 0.11748407681286335, -0.06191588487685658, 0.24307279055006803, -0.14958735145255922, -0.07290858554001897, -0.09424469094444066, 0.06398810870875604, 0.04087577518261969, 0.04212884880695492, 0.16454146805778147, -0.09681907343678177, -0.06863898502476513, 0.3389821489453316, -0.1274890785481548, 0.07591866631433368, 0.17965861596167088, -0.2375398097410798, -0.11900887763127685, 0.251799490429461, 0.14010380671918393, 0.07876101406477391, -0.10320695463439915, -0.05011478817556053, -0.06012841561809182, 0.20448415008187293, 0.0932809818200767, 0.06826817970350385, 0.25908870344236495, 0.0935516047757119, 0.03509241594001651, 0.09481242662668228, -0.361974746607244, -0.0560347170624882, -0.24059062618762256, -0.06296329374238849, -0.051475313052535054, 0.04310826720762998, -0.0883892998395022, -0.13765414917841554, 0.4010956288613379, 0.11192467590793967, 0.20764010754972698, 0.009373656017705798, 0.2886802737638354, 0.10051726845931262, 0.10681584352627396, 0.10652555034682154, 0.3385642622113228, 0.19368983366712927, 0.23339916342776268, -0.21237449731491506, 0.007926967576146126, 0.025605056189000608] |
707.2717 | Lagrangians with electric and magnetic charges of N=2 supersymmetric
gauge theories | General Lagrangians are constructed for N=2 supersymmetric gauge theories in
four space-time dimensions involving gauge groups with (non-abelian) electric
and magnetic charges. The charges induce a scalar potential, which, when the
charges are regarded as spurionic quantities, is invariant under
electric/magnetic duality. The resulting theories are especially relevant for
supergravity, but details of the extension to local supersymmetry will be
discussed elsewhere. The results include the coupling to hypermultiplets.
Without the latter, it is demonstrated how an off-shell representation can be
constructed based on vector and tensor supermultiplets.
| hep-th | general lagrangians are constructed for n2 supersymmetric gauge theories in four spacetime dimensions involving gauge groups with nonabelian electric and magnetic charges the charges induce a scalar potential which when the charges are regarded as spurionic quantities is invariant under electricmagnetic duality the resulting theories are especially relevant for supergravity but details of the extension to local supersymmetry will be discussed elsewhere the results include the coupling to hypermultiplets without the latter it is demonstrated how an offshell representation can be constructed based on vector and tensor supermultiplets | [['general', 'lagrangians', 'are', 'constructed', 'for', 'n2', 'supersymmetric', 'gauge', 'theories', 'in', 'four', 'spacetime', 'dimensions', 'involving', 'gauge', 'groups', 'with', 'nonabelian', 'electric', 'and', 'magnetic', 'charges', 'the', 'charges', 'induce', 'a', 'scalar', 'potential', 'which', 'when', 'the', 'charges', 'are', 'regarded', 'as', 'spurionic', 'quantities', 'is', 'invariant', 'under', 'electricmagnetic', 'duality', 'the', 'resulting', 'theories', 'are', 'especially', 'relevant', 'for', 'supergravity', 'but', 'details', 'of', 'the', 'extension', 'to', 'local', 'supersymmetry', 'will', 'be', 'discussed', 'elsewhere', 'the', 'results', 'include', 'the', 'coupling', 'to', 'hypermultiplets', 'without', 'the', 'latter', 'it', 'is', 'demonstrated', 'how', 'an', 'offshell', 'representation', 'can', 'be', 'constructed', 'based', 'on', 'vector', 'and', 'tensor', 'supermultiplets']] | [-0.1410732145648746, 0.2537614516293781, -0.04305425413291563, 0.12482500640643676, -0.107770967109404, -0.17718770314439264, -0.10632945046844808, 0.3578035023899495, -0.14406125761822544, -0.27166211753236974, 0.08636762012743433, -0.23450236188628795, -0.1707588106166275, 0.11338170816783201, -0.038012846645539285, -0.011000246603295884, -0.04152837121562863, 0.10390863245067355, -0.09082803755617616, -0.28653273404713464, 0.31574373930396343, -0.0047367589908059345, 0.2613236306722022, 0.07500347724933155, 0.09111511685081165, 0.0001539479761215096, 0.0021508082705126567, 0.02886507502460683, -0.039180812489410695, 0.10781216467942366, 0.2534246648746458, 0.0442519752594473, 0.059053502659398044, -0.4549885676983236, -0.21898154087830335, 0.0954199333738705, 0.1481791065135357, 0.15443909569214817, -0.03899331206709824, -0.3329590133560652, 0.0782128876995888, -0.15501062394204465, -0.15594934926411952, -0.18321433899373832, -0.00022642870581793514, -0.08848868856318859, -0.31130898286673153, 0.07376657534835183, -0.007114707386459817, 0.05106737629235299, -0.07259004755972208, -0.1106606689559571, -0.11928885396231305, 0.0625524960702354, 0.16941863217454572, 0.04248234119520269, 0.18287641861983997, -0.1928744943579659, -0.16347663604194002, 0.3997909030083313, -0.03132938376141035, -0.3419956545244945, 0.15835658679134212, -0.07544624900170178, -0.1805009695394388, 0.06654503879095004, 0.09328702656255866, 0.17118969646451826, -0.16331390872288798, 0.2276283323338827, -0.03154713111739098, 0.10297993322919038, 0.09076485560085117, 0.08265682722677328, 0.27163113161540503, 0.035581385187635366, 0.054343959120160434, 0.12015419744420797, 0.03155173771136271, -0.12173915756019679, -0.4320190812207081, -0.14772348733491858, -0.10501983109332452, 0.08991510282116492, -0.11401129252805152, -0.11859090224937642, 0.3643012501997873, 0.11595761655057273, 0.11440813833575124, 0.02845323701066346, 0.1883819970217618, 0.13339431565228468, 0.13979952930557457, 0.014768235517708077, 0.2595081262671473, 0.20133535919541662, 0.05872402495746924, -0.18517300493576014, -0.14743853424707512, 0.19716844774666242] |
707.2718 | Animation of virtual mannequins, robot-like simulation or motion
captures | In order to optimize the costs and time of design of the new products while
improving their quality, concurrent engineering is based on the digital model
of these products, the numerical model. However, in order to be able to avoid
definitively physical model, old support of the design, without loss of
information, new tools must be available. Especially, a tool making it possible
to check simply and quickly the maintainability of complex mechanical sets
using the numerical model is necessary. Since one decade, our team works on the
creation of tool for the generation and the analysis of trajectories of virtual
mannequins. The simulation of human tasks can be carried out either by
robot-like simulation or by simulation by motion capture. This paper presents
some results on the both two methods. The first method is based on a
multi-agent system and on a digital mock-up technology, to assess an efficient
path planner for a manikin or a robot for access and visibility task taking
into account ergonomic constraints or joint and mechanical limits. In order to
solve this problem, the human operator is integrated in the process
optimization to contribute to a global perception of the environment. This
operator cooperates, in real-time, with several automatic local elementary
agents. In the case of the second approach, we worked with the CEA and EADS/CCR
to solve the constraints related to the evolution of human virtual in its
environment on the basis of data resulting from motion capture system. An
approach using of the virtual guides was developed to allow to the user the
realization of precise trajectory in absence of force feedback. The result of
this work validates solutions through the digital mock-up; it can be applied to
simulate maintenability and mountability tasks.
| cs.RO | in order to optimize the costs and time of design of the new products while improving their quality concurrent engineering is based on the digital model of these products the numerical model however in order to be able to avoid definitively physical model old support of the design without loss of information new tools must be available especially a tool making it possible to check simply and quickly the maintainability of complex mechanical sets using the numerical model is necessary since one decade our team works on the creation of tool for the generation and the analysis of trajectories of virtual mannequins the simulation of human tasks can be carried out either by robotlike simulation or by simulation by motion capture this paper presents some results on the both two methods the first method is based on a multiagent system and on a digital mockup technology to assess an efficient path planner for a manikin or a robot for access and visibility task taking into account ergonomic constraints or joint and mechanical limits in order to solve this problem the human operator is integrated in the process optimization to contribute to a global perception of the environment this operator cooperates in realtime with several automatic local elementary agents in the case of the second approach we worked with the cea and eadsccr to solve the constraints related to the evolution of human virtual in its environment on the basis of data resulting from motion capture system an approach using of the virtual guides was developed to allow to the user the realization of precise trajectory in absence of force feedback the result of this work validates solutions through the digital mockup it can be applied to simulate maintenability and mountability tasks | [['in', 'order', 'to', 'optimize', 'the', 'costs', 'and', 'time', 'of', 'design', 'of', 'the', 'new', 'products', 'while', 'improving', 'their', 'quality', 'concurrent', 'engineering', 'is', 'based', 'on', 'the', 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707.2719 | Bulk Filling Branes and the Baryon Density in AdS/QCD with gravity
back-reaction | We consider the gravity back reaction on the metric due to the baryon density
in effective ads/qcd model by reconsidering the role of the charged AdS black
hole. Previously it has been known that the U(1) charge is dual to the
R-charge. Here we point out that if we consider the case where $AdS_5$ is
completely filled with $N_f$ flavor branes, the gravity back reaction produces
charged AdS black hole where the effect of charge on the metric is proportional
to $N_f/N_c$. As a consequence, phase diagram changes qualitatively if we allow
$N_f/N_c$ finite: it closes at the finite density unlike the probe brane
embedding approach.
Another issue we discuss here is the question whether there is any chemical
potential dependence in the confining phase. We consider this problem in the
hard wall model with baryon charge. We conclude that there is a non-trivial
dependence on the chemical potential in this case also.
| hep-th | we consider the gravity back reaction on the metric due to the baryon density in effective adsqcd model by reconsidering the role of the charged ads black hole previously it has been known that the u1 charge is dual to the rcharge here we point out that if we consider the case where ads_5 is completely filled with n_f flavor branes the gravity back reaction produces charged ads black hole where the effect of charge on the metric is proportional to n_fn_c as a consequence phase diagram changes qualitatively if we allow n_fn_c finite it closes at the finite density unlike the probe brane embedding approach another issue we discuss here is the question whether there is any chemical potential dependence in the confining phase we consider this problem in the hard wall model with baryon charge we conclude that there is a nontrivial dependence on the chemical potential in this case also | [['we', 'consider', 'the', 'gravity', 'back', 'reaction', 'on', 'the', 'metric', 'due', 'to', 'the', 'baryon', 'density', 'in', 'effective', 'adsqcd', 'model', 'by', 'reconsidering', 'the', 'role', 'of', 'the', 'charged', 'ads', 'black', 'hole', 'previously', 'it', 'has', 'been', 'known', 'that', 'the', 'u1', 'charge', 'is', 'dual', 'to', 'the', 'rcharge', 'here', 'we', 'point', 'out', 'that', 'if', 'we', 'consider', 'the', 'case', 'where', 'ads_5', 'is', 'completely', 'filled', 'with', 'n_f', 'flavor', 'branes', 'the', 'gravity', 'back', 'reaction', 'produces', 'charged', 'ads', 'black', 'hole', 'where', 'the', 'effect', 'of', 'charge', 'on', 'the', 'metric', 'is', 'proportional', 'to', 'n_fn_c', 'as', 'a', 'consequence', 'phase', 'diagram', 'changes', 'qualitatively', 'if', 'we', 'allow', 'n_fn_c', 'finite', 'it', 'closes', 'at', 'the', 'finite', 'density', 'unlike', 'the', 'probe', 'brane', 'embedding', 'approach', 'another', 'issue', 'we', 'discuss', 'here', 'is', 'the', 'question', 'whether', 'there', 'is', 'any', 'chemical', 'potential', 'dependence', 'in', 'the', 'confining', 'phase', 'we', 'consider', 'this', 'problem', 'in', 'the', 'hard', 'wall', 'model', 'with', 'baryon', 'charge', 'we', 'conclude', 'that', 'there', 'is', 'a', 'nontrivial', 'dependence', 'on', 'the', 'chemical', 'potential', 'in', 'this', 'case', 'also']] | [-0.10901076743817505, 0.1924813942697654, -0.08354957706448653, 0.0932089919346123, -0.07374295327520254, -0.14880670070209923, 0.06883260350997006, 0.32804679188853, -0.19032409508998682, -0.23716932356820192, 0.05015300156235135, -0.3316811898029318, -0.14808989550577464, 0.07172006091979496, -0.04913236979955162, -0.01532427643370979, -0.04492182973650546, 0.07848618325497346, -0.07274595012711788, -0.23698300097496827, 0.3848584494218717, 0.030206137504185143, 0.2752016610922475, 0.1263174424982733, 0.08672074358484227, -0.006982218875896697, 0.013202543283684873, 0.05028038047668007, -0.15873281313542975, -0.016916641160064708, 0.2063630051595871, 0.054935440402843205, 0.1776304989170551, -0.41564413035909337, -0.2372481693312818, 0.14922709153201189, 0.15338227511353159, 0.18144901548481845, -0.11037524782495536, -0.2114912993274629, 0.08118383845563953, -0.18779347362179383, -0.16876540825629205, -0.03256859054889384, 0.05106788290834992, -0.09039459874841317, -0.22502957898179934, 0.08011016818531941, 0.006466937473567288, -0.04898227341594844, -0.08842985913023547, -0.06593034213433176, -0.057047830008919914, 0.08368977347200164, 0.1399765102781684, 0.10818401792769936, 0.15147843448980863, -0.12699634593521897, -0.07290832727563147, 0.38497605424349995, -0.0706082715613317, -0.25917601272512497, 0.15030284917584674, -0.1923763822277953, -0.1312236252599974, 0.0656080190640162, 0.10292111921848522, 0.1481101435390027, -0.11855807099978324, 0.2089899906072936, -0.03943439209498952, 0.1580847872718271, 0.08524011602028718, 0.020725086273540274, 0.2944695109172779, 0.17566833730324422, 0.05903054658761796, 0.16914356131642277, -0.051360045083390635, -0.10318598908439182, -0.3306549038415397, -0.1176828202225414, -0.15205932098434738, 0.10640498337768067, -0.12071135287702668, -0.1601911542413671, 0.3614448681899827, 0.14424473601180354, 0.20035110418593474, -0.027973173289663263, 0.26651755086103684, 0.09462250826280759, 0.040535788118741874, 0.07617173174676163, 0.27335426580081723, 0.11804849720328706, 0.1358283299289254, -0.29605619515462783, -0.03288461011225735, 0.12256999941104475] |
707.272 | Screening effects on field emission from arrays of (5,5) carbon
nanotubes: Quantum-mechanical simulation | The simulation of field electron emission from arrays of micrometer-long
open-ended (5, 5) carbon nanotubes is performed in the framework of quantum
theory of many electrons. It is found that the applied external field is
strongly screened when the spacing distance is shorter than the length of the
carbon nanotubes. The optimal spacing distance is two to three times of the
nanotube length, slightly depending on the applied external fields. The
electric screening can be described by a factor that is a exponential function
of the ratio of the spacing distance to the length of the carbon nanotubes. For
a given length, the field enhancement factor decreases sharply as the screening
factor larger than 0.05. The simulation implies that the thickness of the array
should be larger than a value but it does not help the emission much by
increasing the thickness a great deal.
| cond-mat.mtrl-sci cond-mat.mes-hall | the simulation of field electron emission from arrays of micrometerlong openended 5 5 carbon nanotubes is performed in the framework of quantum theory of many electrons it is found that the applied external field is strongly screened when the spacing distance is shorter than the length of the carbon nanotubes the optimal spacing distance is two to three times of the nanotube length slightly depending on the applied external fields the electric screening can be described by a factor that is a exponential function of the ratio of the spacing distance to the length of the carbon nanotubes for a given length the field enhancement factor decreases sharply as the screening factor larger than 005 the simulation implies that the thickness of the array should be larger than a value but it does not help the emission much by increasing the thickness a great deal | [['the', 'simulation', 'of', 'field', 'electron', 'emission', 'from', 'arrays', 'of', 'micrometerlong', 'openended', '5', '5', 'carbon', 'nanotubes', 'is', 'performed', 'in', 'the', 'framework', 'of', 'quantum', 'theory', 'of', 'many', 'electrons', 'it', 'is', 'found', 'that', 'the', 'applied', 'external', 'field', 'is', 'strongly', 'screened', 'when', 'the', 'spacing', 'distance', 'is', 'shorter', 'than', 'the', 'length', 'of', 'the', 'carbon', 'nanotubes', 'the', 'optimal', 'spacing', 'distance', 'is', 'two', 'to', 'three', 'times', 'of', 'the', 'nanotube', 'length', 'slightly', 'depending', 'on', 'the', 'applied', 'external', 'fields', 'the', 'electric', 'screening', 'can', 'be', 'described', 'by', 'a', 'factor', 'that', 'is', 'a', 'exponential', 'function', 'of', 'the', 'ratio', 'of', 'the', 'spacing', 'distance', 'to', 'the', 'length', 'of', 'the', 'carbon', 'nanotubes', 'for', 'a', 'given', 'length', 'the', 'field', 'enhancement', 'factor', 'decreases', 'sharply', 'as', 'the', 'screening', 'factor', 'larger', 'than', '005', 'the', 'simulation', 'implies', 'that', 'the', 'thickness', 'of', 'the', 'array', 'should', 'be', 'larger', 'than', 'a', 'value', 'but', 'it', 'does', 'not', 'help', 'the', 'emission', 'much', 'by', 'increasing', 'the', 'thickness', 'a', 'great', 'deal']] | [-0.14282031552063237, 0.2042969037746561, -0.026198820936782607, 0.050126321265345504, 0.01006529924042266, -0.12657227094188847, 0.02965724819002609, 0.41062249460353933, -0.24666171582608387, -0.31340628058874404, 0.059008521671760183, -0.26979823723949237, -0.06153625655309137, 0.21612260077341364, 0.013860385267642038, -0.029850518451762738, 0.04293219598716703, 0.0415530972311209, -0.06366052104256534, -0.22669179611116777, 0.25213405522839005, 0.11978411454434411, 0.32143041248080034, 0.09727361989689284, 0.019628109481057216, 0.0008932566944638203, 0.04180140511036433, 0.10401307968101625, -0.10916552179054445, 0.09742130122051157, 0.1614062923103057, 0.011920323091205852, 0.2698679889777097, -0.4052258384799392, -0.21643944507272078, 0.05310745605363928, 0.16154023052739172, 0.10433198117875847, 0.01657353939472473, -0.2170584599069994, 0.09409471654879122, -0.13291180983731715, -0.1572909952944209, 0.07661261737089732, 0.06822908712021107, 0.016112721502652454, -0.2584354682118985, 0.07009672410786152, 0.035880987695418295, 0.041999420676187706, -0.03588400832056229, -0.16275788207120936, -0.01147170643611201, 0.090255208572991, 0.08337057134265016, 0.10027305672651735, 0.22952224208234712, -0.11421133067844243, -0.049095150399631984, 0.38570783847364887, -0.071515607005206, -0.14856979860921676, 0.14760494926173626, -0.16312409094053096, -0.008467417431931043, 0.19264536009427033, 0.1102520365406486, 0.11870605635039251, -0.1264482292688877, 0.04680077046771124, -0.021267044788290713, 0.26187689069192854, 0.10029497295618058, 0.03333016666583717, 0.22509376321445573, 0.20269157763988035, 0.06501385583983862, 0.1344055563934019, -0.10878036206684492, -0.048170793807969015, -0.22005868428226175, -0.14778361387936206, -0.20340406019802623, 0.11076278290400234, -0.14103190423599604, -0.17417642547395723, 0.3860051084309816, 0.13446977773424365, 0.16660180995561955, 0.03463013645117011, 0.25765235952005305, 0.14810514645410122, 0.17769044501032552, 0.021068682292915863, 0.2671067950139143, 0.15976781535668877, 0.04699123373961654, -0.2467748203780502, 0.05542695614798315, -0.0011129242271698755] |
707.2721 | A Framework to Illustrate Kinematic Behavior of Mechanisms by Haptic
Feedback | The kinematic properties of mechanisms are well known by the researchers and
teachers. The theory based on the study of Jacobian matrices allows us to
explain, for example, the singular configuration. However, in many cases, the
physical sense of such properties is difficult to explain to students. The aim
of this article is to use haptic feedback to render to the user the
signification of different kinematic indices. The framework uses a Phantom Omni
and a serial and parallel mechanism with two degrees of freedom. The
end-effector of both mechanisms can be moved either by classical mouse, or
Phantom Omni with or without feedback.
| cs.RO | the kinematic properties of mechanisms are well known by the researchers and teachers the theory based on the study of jacobian matrices allows us to explain for example the singular configuration however in many cases the physical sense of such properties is difficult to explain to students the aim of this article is to use haptic feedback to render to the user the signification of different kinematic indices the framework uses a phantom omni and a serial and parallel mechanism with two degrees of freedom the endeffector of both mechanisms can be moved either by classical mouse or phantom omni with or without feedback | [['the', 'kinematic', 'properties', 'of', 'mechanisms', 'are', 'well', 'known', 'by', 'the', 'researchers', 'and', 'teachers', 'the', 'theory', 'based', 'on', 'the', 'study', 'of', 'jacobian', 'matrices', 'allows', 'us', 'to', 'explain', 'for', 'example', 'the', 'singular', 'configuration', 'however', 'in', 'many', 'cases', 'the', 'physical', 'sense', 'of', 'such', 'properties', 'is', 'difficult', 'to', 'explain', 'to', 'students', 'the', 'aim', 'of', 'this', 'article', 'is', 'to', 'use', 'haptic', 'feedback', 'to', 'render', 'to', 'the', 'user', 'the', 'signification', 'of', 'different', 'kinematic', 'indices', 'the', 'framework', 'uses', 'a', 'phantom', 'omni', 'and', 'a', 'serial', 'and', 'parallel', 'mechanism', 'with', 'two', 'degrees', 'of', 'freedom', 'the', 'endeffector', 'of', 'both', 'mechanisms', 'can', 'be', 'moved', 'either', 'by', 'classical', 'mouse', 'or', 'phantom', 'omni', 'with', 'or', 'without', 'feedback']] | [-0.07481891763521932, 0.06516608643757466, -0.08094714732634692, 0.04823020842629306, -0.15520857740193605, -0.16381179735673448, 0.032367410728161655, 0.3760721244526884, -0.27155390112266803, -0.3494756732431527, 0.08329550181784165, -0.24146565062213854, -0.1692059601057106, 0.19015653483746484, -0.09149284842155445, 0.0291599145409866, 0.02224519407340827, 0.05867668558718064, -0.022640100890734736, -0.22663253578782763, 0.32696743689638635, 0.06801600112633494, 0.24831411498598754, 0.02532726526260376, 0.11824132499840254, -0.0037738900954047074, -0.037391243381604836, 0.01208272585411298, -0.10667976592174874, 0.12934978395284047, 0.24256636431583992, 0.1579248092782039, 0.2621156130380069, -0.45764616318047047, -0.190864334644105, 0.09123952075942025, 0.12064093301663749, 0.10174952639051928, 0.009638746438073352, -0.2619334779805146, 0.114781414776539, -0.16437671636678994, -0.13807566166640475, -0.05382594988287355, -0.0472124380310281, 0.03296094673480464, -0.2824468638371819, 0.01031785283759326, 0.034677259052002155, 0.0755787910356258, -0.055973902900474895, -0.06693243641012277, -0.0085413128500267, 0.18791747773334813, 0.06998939447713873, -0.01979793218868928, 0.15068349778616372, -0.1743466489648339, -0.15036504180282534, 0.37856612176535864, 0.04439592589803327, -0.22986928065522358, 0.26402778965824, -0.11807954884044683, -0.06804973316880372, 0.08528511013047627, 0.17363836370462266, 0.10555210846135966, -0.15584800951182842, 0.05724349284663241, 0.01034565601282968, 0.1566803109151526, 0.0336387800536893, -0.006555063144053117, 0.19836661349444723, 0.10041864403487685, 0.01718788717866678, 0.12652782783194338, -0.06583960775438194, -0.1094226651878741, -0.274211155411859, -0.17887780463430458, -0.11754850909794466, 0.027995167886659216, -0.0645154718968115, -0.13787509052333638, 0.41018353260453577, 0.1460483009698062, 0.20676992299894875, 0.00980827586653714, 0.32821339619560885, 0.03964829620403739, 0.08777389488218781, 0.04915627818375539, 0.2301696851903286, 0.11553654051833571, 0.11834332547956504, -0.19988132971159828, 0.0857981740935849, 0.032019025673015185] |
707.2722 | A remark on global well-posedness below L^2 for the gKdV-3 equation | The I-method in its first version as developed by Colliander et al. is
applied to prove that the Cauchy-problem for the generalised Korteweg-de Vries
equation of order three (gKdV-3) is globally well-posed for large real-valued
data in the Sobolev space H^s, provided s>-1/42.
| math.AP | the imethod in its first version as developed by colliander et al is applied to prove that the cauchyproblem for the generalised kortewegde vries equation of order three gkdv3 is globally wellposed for large realvalued data in the sobolev space hs provided s142 | [['the', 'imethod', 'in', 'its', 'first', 'version', 'as', 'developed', 'by', 'colliander', 'et', 'al', 'is', 'applied', 'to', 'prove', 'that', 'the', 'cauchyproblem', 'for', 'the', 'generalised', 'kortewegde', 'vries', 'equation', 'of', 'order', 'three', 'gkdv3', 'is', 'globally', 'wellposed', 'for', 'large', 'realvalued', 'data', 'in', 'the', 'sobolev', 'space', 'hs', 'provided', 's142']] | [-0.06478390888106532, 0.034141739239779915, -0.04109666991706302, 0.09522332351586622, -0.10741504222699781, -0.1157280997055151, -0.1145734405372201, 0.243989474798848, -0.2859015977010131, -0.21627626063801894, 0.18400913792117157, -0.261123313386811, -0.13544498420343165, 0.209787987467901, -0.11554016231945376, 0.12829870653264905, 0.01844716281062219, -0.04465869592684435, 0.0026864511948987476, -0.34090082465511995, 0.37524243062589224, -0.0005643067472591633, 0.23811172179468884, -0.008060140626096144, 0.14212418661350612, 0.026137323588666665, 0.010560175335807045, -0.039437305307861915, -0.1905650325503169, 0.06698451550938643, 0.2713821573046649, 0.0787599247073891, 0.3060644443442182, -0.3728962089048653, -0.24509975050644175, 0.11541465617625452, 0.12804845977211143, 0.0953589187844134, -0.01882480117265226, -0.40556237124270056, 0.0796313304794816, -0.12901830818594956, -0.2249503285260644, -0.11677471836801709, 0.09988207686919628, 0.07833427036317384, -0.32135574269767214, 0.1427330664336318, 0.07581999874673784, -0.052791291756964315, -0.1730064793359261, -0.05191903537502739, -0.08996656686976189, -0.049828180634393926, -0.0078059506784306796, 0.09515497898228648, -0.07705125682873697, -0.02649765211816241, -0.07696556452116589, 0.36155371622341437, -0.11724634969709213, -0.26412991025462385, 0.10146026646721222, -0.06651696604790121, -0.1698283623199819, 0.07138947590549545, 0.12811230872644158, 0.14503034922044453, -0.14763599068562433, 0.21257132750640556, -0.06820827029736304, 0.1619107909500599, 0.10307534765906451, -0.08977492547753017, -0.028936149666040408, 0.13796071683215658, 0.1260231589762176, 0.11925759042539384, -0.02605616569905201, -0.11529043732103096, -0.2812127754228508, -0.1703766546462004, -0.22703025807490254, 0.027080065275474293, -0.1017809633801623, -0.13156253390195893, 0.3214431533976117, 0.12328621112491663, 0.13268746222119507, 0.09215821096355595, 0.1715918234208735, 0.16500931706495311, -0.01855435491562253, 0.12006027421845895, 0.22118493900407196, 0.1617658051105625, 0.22858806685885277, -0.18615743929020515, -0.019156046949963017, 0.2795851590884168] |
707.2723 | Nonlinear SDEs driven by L\'evy processes and related PDEs | In this paper we study general nonlinear stochastic differential equations,
where the usual Brownian motion is replaced by a L\'evy process. We also
suppose that the coefficient multiplying the increments of this process is
merely Lipschitz continuous and not necessarily linear in the time-marginals of
the solution as is the case in the classical McKean-Vlasov model. We first
study existence, uniqueness and particle approximations for these stochastic
differential equations. When the driving process is a pure jump L\'evy process
with a smooth but unbounded L\'evy measure, we develop a stochastic calculus of
variations to prove that the time-marginals of the solutions are absolutely
continuous with respect to the Lebesgue measure. In the case of a symmetric
stable driving process, we deduce the existence of a function solution to a
nonlinear integro-differential equation involving the fractional Laplacian.
| math.PR | in this paper we study general nonlinear stochastic differential equations where the usual brownian motion is replaced by a levy process we also suppose that the coefficient multiplying the increments of this process is merely lipschitz continuous and not necessarily linear in the timemarginals of the solution as is the case in the classical mckeanvlasov model we first study existence uniqueness and particle approximations for these stochastic differential equations when the driving process is a pure jump levy process with a smooth but unbounded levy measure we develop a stochastic calculus of variations to prove that the timemarginals of the solutions are absolutely continuous with respect to the lebesgue measure in the case of a symmetric stable driving process we deduce the existence of a function solution to a nonlinear integrodifferential equation involving the fractional laplacian | [['in', 'this', 'paper', 'we', 'study', 'general', 'nonlinear', 'stochastic', 'differential', 'equations', 'where', 'the', 'usual', 'brownian', 'motion', 'is', 'replaced', 'by', 'a', 'levy', 'process', 'we', 'also', 'suppose', 'that', 'the', 'coefficient', 'multiplying', 'the', 'increments', 'of', 'this', 'process', 'is', 'merely', 'lipschitz', 'continuous', 'and', 'not', 'necessarily', 'linear', 'in', 'the', 'timemarginals', 'of', 'the', 'solution', 'as', 'is', 'the', 'case', 'in', 'the', 'classical', 'mckeanvlasov', 'model', 'we', 'first', 'study', 'existence', 'uniqueness', 'and', 'particle', 'approximations', 'for', 'these', 'stochastic', 'differential', 'equations', 'when', 'the', 'driving', 'process', 'is', 'a', 'pure', 'jump', 'levy', 'process', 'with', 'a', 'smooth', 'but', 'unbounded', 'levy', 'measure', 'we', 'develop', 'a', 'stochastic', 'calculus', 'of', 'variations', 'to', 'prove', 'that', 'the', 'timemarginals', 'of', 'the', 'solutions', 'are', 'absolutely', 'continuous', 'with', 'respect', 'to', 'the', 'lebesgue', 'measure', 'in', 'the', 'case', 'of', 'a', 'symmetric', 'stable', 'driving', 'process', 'we', 'deduce', 'the', 'existence', 'of', 'a', 'function', 'solution', 'to', 'a', 'nonlinear', 'integrodifferential', 'equation', 'involving', 'the', 'fractional', 'laplacian']] | [-0.09972274122650132, 0.09710273002137375, -0.10439298437524806, 0.060217105607949524, -0.09291542106075212, -0.11972524992340956, -0.013366176264860448, 0.3342795573887141, -0.35391173314522295, -0.16819029099946525, 0.14607483450313072, -0.2781904669588103, -0.1756487655289033, 0.15201833665709916, -0.10395335719016764, 0.09618869235547368, 0.022462297128239536, 0.022692568545394084, -0.02499586738550159, -0.18411901067284978, 0.3666807300178334, -0.04624547542291967, 0.18964239901876734, -0.020668597070171553, 0.18225457115947982, -0.02031215507989092, -0.05385651971172432, -0.002288084230659639, -0.15641223651972028, 0.08723273425472572, 0.21572071361793754, 0.020414424740010872, 0.32912652557441857, -0.3906930921571877, -0.19371181153966224, 0.18802116975669325, 0.08674283925831654, 0.0670574104793452, -0.04941597884295762, -0.2918584131711053, 0.0740533810971743, -0.13188508155529716, -0.20213923569398878, -0.054488026221994966, 0.055399908622562444, 0.08838925617815488, -0.3452992885654299, 0.11201232788473992, 0.1488927112385521, -0.0037394954124465585, -0.12082917806315784, -0.03362213730425163, -0.009462706063298838, 0.030249509302366813, 0.0469149501173781, 0.0009877505328725366, 0.10417332079754595, -0.10119882074992775, -0.1363297772100743, 0.33818067522609935, -0.1541992115774466, -0.3312987985692042, 0.144817545047879, -0.20941143566126222, -0.12565453334280072, 0.12235524423201294, 0.1609763355809264, 0.18987913800211734, -0.20108805735039556, 0.14730866710220547, -0.038129215881995415, 0.12301607628828873, 0.05443025644361863, -0.025350937223907643, 0.07991858961416737, 0.14208122725369107, 0.1798920667874079, 0.15216349659364342, -0.003367838675758856, -0.19924542828983463, -0.3749892961452989, -0.18523990507930968, -0.14838317771243645, 0.12995255691256555, -0.10817940290379578, -0.23038829359318377, 0.35121387859587283, 0.11688158288897658, 0.17365069755846085, 0.10669488273218602, 0.24340858596705778, 0.2718729154773481, -0.06676816891515902, 0.038494317354086566, 0.16038271219483302, 0.17765439989949194, 0.14257526762701353, -0.19129181450390367, 0.09838397798696807, 0.10336780029020327] |
707.2724 | Recent Results from HERA Experiments | Recent results from HERA are presented. The main reviewed subjects are
polarized DIS cross sections, parton density determination, diffractive PDFs,
multi-jet production and searches for physics beyond the Standard Model.
| hep-ex | recent results from hera are presented the main reviewed subjects are polarized dis cross sections parton density determination diffractive pdfs multijet production and searches for physics beyond the standard model | [['recent', 'results', 'from', 'hera', 'are', 'presented', 'the', 'main', 'reviewed', 'subjects', 'are', 'polarized', 'dis', 'cross', 'sections', 'parton', 'density', 'determination', 'diffractive', 'pdfs', 'multijet', 'production', 'and', 'searches', 'for', 'physics', 'beyond', 'the', 'standard', 'model']] | [0.07924055381057163, 0.2139774207180987, -0.1408867566846311, 0.22490317203725377, -0.005855092220008374, -0.045599083908988786, -0.09783693018058935, 0.37243265894552074, -0.13985345363616944, -0.22319010371963183, -0.03837452487399181, -0.4033552423740427, 0.05795847990860541, 0.17831548513689388, 0.1121541271607081, 0.2190596492961049, 0.1551921441530188, -0.1375890525834014, -0.0170473689523836, -0.2597531310903529, 0.31788424871241056, 0.07639490350460013, 0.2763744693249464, 0.18436302011832595, -0.006989367554585139, 0.18229468927408257, -0.23538154590836105, -0.11235300612946351, -0.14810970065494378, 0.12381286214416226, 0.38546500373631715, 0.11376292572046319, -0.013860322038332621, -0.39504834190011023, -0.07803951102929811, 0.01595126969429354, 0.06720562366147836, 0.12242052293731831, -0.09992843524863322, -0.3381706649592767, 0.012145538938542207, -0.2633497909953197, -0.12802121074249348, -0.09996968760776023, -0.0679425676042835, 0.07351053270200889, -0.27927522199849286, 0.07990159261971712, -0.13454696352904041, -0.011242126789875328, 0.018588574797225494, -0.3623883929414054, -0.07819754783219347, -0.04641260951757431, 0.12479037780043048, 0.13824582435190677, 0.26143149646619956, -0.28358299266546966, -0.2796428254495064, 0.3400755763674776, 0.0498678480895857, -0.10708808964118362, 0.15375727328161398, -0.3143697838609417, -0.19017471595822524, 0.17358207122112315, 0.3134055862513681, 0.03201424783716599, -0.2363797163280348, 0.16312395517209854, 0.018501375642760345, 0.13861742633550117, 0.06374402105187377, 0.06685480143254002, 0.17343621194983522, 0.30611676452681424, -0.11679890649393201, -0.10554145409259945, -0.16931034145721544, -0.15095210570531586, -0.5507113295296828, 0.0007236296931902568, 0.010983363352715969, 0.03792575386663278, 0.0028129994874082818, -0.05471905895198385, 0.302475358111163, 0.08808718152965109, 0.26424585146208607, 0.032808057560275, 0.4362527141968409, 0.06479912685851257, 0.0299226899476101, 0.011329156501839558, 0.3279709292265276, 0.2558002033270895, 0.1348652770432333, -0.07230167378826688, 0.09755998395460969, 0.04996092075016349] |
707.2725 | Fluctuation Relations for Diffusion Processes | The paper presents a unified approach to different fluctuation relations for
classical nonequilibrium dynamics described by diffusion processes. Such
relations compare the statistics of fluctuations of the entropy production or
work in the original process to the similar statistics in the time-reversed
process. The origin of a variety of fluctuation relations is traced to the use
of different time reversals. It is also shown how the application of the
presented approach to the tangent process describing the joint evolution of
infinitesimally close trajectories of the original process leads to a
multiplicative extension of the fluctuation relations.
| math-ph cond-mat.stat-mech math.MP | the paper presents a unified approach to different fluctuation relations for classical nonequilibrium dynamics described by diffusion processes such relations compare the statistics of fluctuations of the entropy production or work in the original process to the similar statistics in the timereversed process the origin of a variety of fluctuation relations is traced to the use of different time reversals it is also shown how the application of the presented approach to the tangent process describing the joint evolution of infinitesimally close trajectories of the original process leads to a multiplicative extension of the fluctuation relations | [['the', 'paper', 'presents', 'a', 'unified', 'approach', 'to', 'different', 'fluctuation', 'relations', 'for', 'classical', 'nonequilibrium', 'dynamics', 'described', 'by', 'diffusion', 'processes', 'such', 'relations', 'compare', 'the', 'statistics', 'of', 'fluctuations', 'of', 'the', 'entropy', 'production', 'or', 'work', 'in', 'the', 'original', 'process', 'to', 'the', 'similar', 'statistics', 'in', 'the', 'timereversed', 'process', 'the', 'origin', 'of', 'a', 'variety', 'of', 'fluctuation', 'relations', 'is', 'traced', 'to', 'the', 'use', 'of', 'different', 'time', 'reversals', 'it', 'is', 'also', 'shown', 'how', 'the', 'application', 'of', 'the', 'presented', 'approach', 'to', 'the', 'tangent', 'process', 'describing', 'the', 'joint', 'evolution', 'of', 'infinitesimally', 'close', 'trajectories', 'of', 'the', 'original', 'process', 'leads', 'to', 'a', 'multiplicative', 'extension', 'of', 'the', 'fluctuation', 'relations']] | [-0.10850347270146206, 0.10853009669032569, -0.16872625998803414, 0.12657735060967448, -0.026676212466554716, -0.045962616980735525, 0.04925055157703658, 0.27555897150887176, -0.34859686103785253, -0.2679697161268753, 0.03593909890211459, -0.2664302807340088, -0.16228197832485117, 0.18400273074075812, -0.04431274571834365, 0.07118589939879409, 0.01280022538655127, 0.032787772996622756, -0.04847645745879466, -0.2020053858771765, 0.340390690175506, 0.0815821706977052, 0.34406367246022757, -0.006056180902911971, 0.11608327495438668, 0.017251374427966464, -0.0675299748369677, 0.0052393677591074566, -0.12711250306165311, 0.11825965973548591, 0.20125119154302715, 0.111105116030861, 0.22350140695925802, -0.4109249879741886, -0.2002146739687305, 0.0751835269111325, 0.1403974260247196, 0.0930673194573804, -0.002683018048022253, -0.2524814028098869, 0.029892076466542978, -0.16050374102875745, -0.14994697998918127, -0.04476669107680209, 0.030266452018016327, 0.034496198078462235, -0.23846001045118706, 0.11637746847039428, 0.132618327770615, 0.020771665402511037, -0.03093012867369301, -0.031154367539177958, -0.012686726569275683, 0.14808677701754883, 0.06732284788328495, -0.0031734088843222708, 0.15543433296261355, -0.12074877112657607, -0.1472609920577573, 0.3832072902781268, -0.08008913153995915, -0.20081793817977692, 0.20410255958267953, -0.1621381182000429, -0.11769483656583664, 0.10930513039056677, 0.1533849353339368, 0.09769695317178655, -0.2182421689429551, 0.07329660006272813, 0.015124516927850587, 0.09564828401441143, 0.03495736303011654, 0.007353133589883025, 0.19093158209337466, 0.16197941417703987, 0.002849821282628303, 0.1858186542764694, -0.05701540949424574, -0.17793892962799873, -0.3365639114830022, -0.16502388290246017, -0.16216952164541, 0.05560881290875841, -0.07260031418021147, -0.15721207050076677, 0.401714437364717, 0.19821007524721304, 0.23778421442451267, 0.05366736676175302, 0.2650307247386081, 0.16467522928239, 0.027414433293112477, 0.017440115703114618, 0.20058911200612783, 0.1858960921066076, 0.11848774678461875, -0.2301953874703031, 0.0835132394907608, 0.0545257743797265] |
707.2726 | Quantum Dynamics of the Taub Universe in a Generalized Uncertainty
Principle framework | The implications of a Generalized Uncertainty Principle on the Taub
cosmological model are investigated. The model is studied in the ADM reduction
of the dynamics and therefore a time variable is ruled out. Such a variable is
quantized in a canonical way and the only physical degree of freedom of the
system (related to the Universe anisotropy) is quantized by means of a modified
Heisenberg algebra. The analysis is performed at both classical and quantum
level. In particular, at quantum level, the motion of wave packets is
investigated. The two main results obtained are as follows. i) The classical
singularity is probabilistically suppressed. The Universe exhibits a stationary
behavior and the probability amplitude is peaked in a determinate region. ii)
The GUP wave packets provide the right behavior in the establishment of a
quasi-isotropic configuration for the Universe.
| gr-qc hep-th | the implications of a generalized uncertainty principle on the taub cosmological model are investigated the model is studied in the adm reduction of the dynamics and therefore a time variable is ruled out such a variable is quantized in a canonical way and the only physical degree of freedom of the system related to the universe anisotropy is quantized by means of a modified heisenberg algebra the analysis is performed at both classical and quantum level in particular at quantum level the motion of wave packets is investigated the two main results obtained are as follows i the classical singularity is probabilistically suppressed the universe exhibits a stationary behavior and the probability amplitude is peaked in a determinate region ii the gup wave packets provide the right behavior in the establishment of a quasiisotropic configuration for the universe | [['the', 'implications', 'of', 'a', 'generalized', 'uncertainty', 'principle', 'on', 'the', 'taub', 'cosmological', 'model', 'are', 'investigated', 'the', 'model', 'is', 'studied', 'in', 'the', 'adm', 'reduction', 'of', 'the', 'dynamics', 'and', 'therefore', 'a', 'time', 'variable', 'is', 'ruled', 'out', 'such', 'a', 'variable', 'is', 'quantized', 'in', 'a', 'canonical', 'way', 'and', 'the', 'only', 'physical', 'degree', 'of', 'freedom', 'of', 'the', 'system', 'related', 'to', 'the', 'universe', 'anisotropy', 'is', 'quantized', 'by', 'means', 'of', 'a', 'modified', 'heisenberg', 'algebra', 'the', 'analysis', 'is', 'performed', 'at', 'both', 'classical', 'and', 'quantum', 'level', 'in', 'particular', 'at', 'quantum', 'level', 'the', 'motion', 'of', 'wave', 'packets', 'is', 'investigated', 'the', 'two', 'main', 'results', 'obtained', 'are', 'as', 'follows', 'i', 'the', 'classical', 'singularity', 'is', 'probabilistically', 'suppressed', 'the', 'universe', 'exhibits', 'a', 'stationary', 'behavior', 'and', 'the', 'probability', 'amplitude', 'is', 'peaked', 'in', 'a', 'determinate', 'region', 'ii', 'the', 'gup', 'wave', 'packets', 'provide', 'the', 'right', 'behavior', 'in', 'the', 'establishment', 'of', 'a', 'quasiisotropic', 'configuration', 'for', 'the', 'universe']] | [-0.1872640502956726, 0.1325577963312305, -0.11491079985474546, 0.09496523539090286, -0.05652096469387196, -0.12041659832702599, 0.018524380434520434, 0.2902397306541494, -0.2628337504591901, -0.2269084128227247, 0.09054015790689332, -0.26454979735696554, -0.10361590834361488, 0.1786371725273953, -0.009162412010060718, 0.020193346465627354, 0.012795698764882442, 0.0926478416492329, -0.058222361847056425, -0.21435689470356167, 0.32695051344563725, 0.08822187958909469, 0.27623412943026726, -0.008154847605180914, 0.13731815352482532, -0.010323367665346334, -0.007175522359540227, 0.04846101748230665, -0.11457996054862936, 0.05713667655093731, 0.19491329074135402, 0.08755994274658893, 0.2416246371627178, -0.38003002649402595, -0.23655203782845344, 0.05814493207287961, 0.12880148706903707, 0.13861661641588569, -0.01738771062894333, -0.2819636360526193, 0.06667401655262886, -0.1488644397924899, -0.1836726650784629, -0.009950588268322357, 0.006536895949123562, -0.013008011447643672, -0.23449893727007767, 0.12656686880264728, 0.05965901987687887, 0.015940252023384623, -0.05512504046951569, -0.06843975743369969, -0.03551010098443299, 0.07209934599940544, 0.03553867823633271, 0.02757199598430737, 0.12109538853047011, -0.1344902017035697, -0.10131059350121928, 0.4119923592990507, -0.05519896979693431, -0.19218136092135008, 0.11050932879552947, -0.1724632787855639, -0.11266698321476039, 0.09555369187686322, 0.09780131017897224, 0.11705556555408174, -0.1436437995078555, 0.12463834105511669, -0.003652884096600642, 0.15389701401463884, 0.04683422511342265, 0.044235752119372286, 0.2380279119234478, 0.16687497460668016, 0.02488751955114413, 0.11941776953914297, -0.08139946412774261, -0.1636695546179038, -0.35364427444511565, -0.16477554965008429, -0.2008086111045618, 0.06717748981485046, -0.0988490357071303, -0.1265785787102726, 0.4189075149656476, 0.09243574983312114, 0.18431231512121207, 0.013786702497821787, 0.2475040142721348, 0.1651247108711159, 0.002940051161441142, 0.06018252495635787, 0.274717989694867, 0.138327655019711, 0.10891532577047854, -0.23396334875766459, 0.06380089393317484, 0.05736660800766254] |
707.2727 | Linear effects of perturbed recombination | Perturbations in the ionization fraction after recombination affect the
Compton cooling of density perturbations. Once the gas temperature starts to
decouple from the CMB temperature, ionization fraction perturbations can have a
significant influence on the subsequent gas temperature perturbation evolution.
This directly affects the 21cm spin temperature of the gas, and also modifies
the small-scale baryon perturbation evolution via the difference in baryon
pressure. The effect on the gas temperature perturbations can be significant on
all scales, and galactic-scale baryon perturbations are modified at the percent
level at redshifts z >~ 100 where numerical simulations are typically started.
| astro-ph | perturbations in the ionization fraction after recombination affect the compton cooling of density perturbations once the gas temperature starts to decouple from the cmb temperature ionization fraction perturbations can have a significant influence on the subsequent gas temperature perturbation evolution this directly affects the 21cm spin temperature of the gas and also modifies the smallscale baryon perturbation evolution via the difference in baryon pressure the effect on the gas temperature perturbations can be significant on all scales and galacticscale baryon perturbations are modified at the percent level at redshifts z 100 where numerical simulations are typically started | [['perturbations', 'in', 'the', 'ionization', 'fraction', 'after', 'recombination', 'affect', 'the', 'compton', 'cooling', 'of', 'density', 'perturbations', 'once', 'the', 'gas', 'temperature', 'starts', 'to', 'decouple', 'from', 'the', 'cmb', 'temperature', 'ionization', 'fraction', 'perturbations', 'can', 'have', 'a', 'significant', 'influence', 'on', 'the', 'subsequent', 'gas', 'temperature', 'perturbation', 'evolution', 'this', 'directly', 'affects', 'the', '21cm', 'spin', 'temperature', 'of', 'the', 'gas', 'and', 'also', 'modifies', 'the', 'smallscale', 'baryon', 'perturbation', 'evolution', 'via', 'the', 'difference', 'in', 'baryon', 'pressure', 'the', 'effect', 'on', 'the', 'gas', 'temperature', 'perturbations', 'can', 'be', 'significant', 'on', 'all', 'scales', 'and', 'galacticscale', 'baryon', 'perturbations', 'are', 'modified', 'at', 'the', 'percent', 'level', 'at', 'redshifts', 'z', '100', 'where', 'numerical', 'simulations', 'are', 'typically', 'started']] | [-0.09907058866684969, 0.2496548445952922, -0.058906477431949114, 0.0607712418801084, -0.0155527756823054, -0.0019874009927830743, 0.026036393233411705, 0.305061354561104, -0.2508988919543083, -0.2937626827834654, 0.055390152477745695, -0.3360033551826305, 0.02514617529112039, 0.1422393490205106, 0.09508792091084202, -0.024107268032109, -0.019456426430608808, -0.014683743804385982, -0.07224252892984558, -0.2925633106083062, 0.35022863739928634, 0.18287650313343584, 0.23299964405980306, 0.08517674078502376, 0.047629115829417076, -0.10904639309329778, -0.06486979886390191, 0.028833104753578753, -0.13767347503549507, -0.10012471249576696, 0.16948958504305955, 0.053488450264078134, 0.2601957650682361, -0.44649283643619914, -0.2658336106663781, 0.10189116377498686, 0.1693930260875483, 0.2074161790042501, -0.07584874193572928, -0.22949671077052342, -0.006070056882178046, -0.15844818432431323, -0.12650513971109212, -0.050052378029015264, 0.0007724621016340158, 0.020363186532871547, -0.24502384243172967, 0.2261272416682314, -0.05013337618066478, 0.0069305276541404195, -0.06401796695133, -0.09034931134989428, -0.1253844455134162, 0.04249698413924804, 0.006639395830864759, 0.037137425328501665, 0.33298130902298484, -0.10780323237017489, 0.03762082937029526, 0.38294167373060567, -0.16874581496663316, -0.06201469120521521, 0.16678471596354677, -0.24253277993309744, -0.14880517030557253, 0.2233926700092084, 0.22089225784923458, 0.034803170254742055, -0.09156700422430468, 0.08454419797185578, 0.059412504060280306, 0.20723991221796298, 0.10466165056202523, 0.02170988626672512, 0.3424317169665676, 0.11180386924156055, 0.015208338437717139, 0.04486057300423032, -0.12501177156929733, -0.029381629530839698, -0.2642371255577993, -0.044984913959177496, -0.12678915592385745, 0.06269189950136334, -0.13038273779981405, -0.11690452753640615, 0.39064662458048655, 0.17954809089028037, 0.22124005166679314, 0.017601347336372763, 0.37483893000741597, 0.13903029015066928, 0.07109533830248203, 0.0975741569994536, 0.31389765144258586, 0.17515811916517535, 0.12782771409412405, -0.3508775136457545, 0.07772702471228297, -0.012976829915489886] |
707.2728 | Prolate Spheroidal Wave Functions In q-Fourier Analysis | The prolate spheroidal wave functions, which are a special case of the
spheroidal wave functions, possess a very surprising and unique property [6].
They are an orthogonal basis of both $L^2(-1,1)$ and the Paley-Wiener space of
bandlimited functions. They also satisfy a discrete orthogonality relation. No
other system of classical orthogonal functions is known to possess this strange
property. We prove that there are new systems possessing this property in
$q$-Fourier analysis. As application we give a new sampling formula with $q^n$
as sampling points, where 0 < q < 1.
| math.GM | the prolate spheroidal wave functions which are a special case of the spheroidal wave functions possess a very surprising and unique property 6 they are an orthogonal basis of both l211 and the paleywiener space of bandlimited functions they also satisfy a discrete orthogonality relation no other system of classical orthogonal functions is known to possess this strange property we prove that there are new systems possessing this property in qfourier analysis as application we give a new sampling formula with qn as sampling points where 0 q 1 | [['the', 'prolate', 'spheroidal', 'wave', 'functions', 'which', 'are', 'a', 'special', 'case', 'of', 'the', 'spheroidal', 'wave', 'functions', 'possess', 'a', 'very', 'surprising', 'and', 'unique', 'property', '6', 'they', 'are', 'an', 'orthogonal', 'basis', 'of', 'both', 'l211', 'and', 'the', 'paleywiener', 'space', 'of', 'bandlimited', 'functions', 'they', 'also', 'satisfy', 'a', 'discrete', 'orthogonality', 'relation', 'no', 'other', 'system', 'of', 'classical', 'orthogonal', 'functions', 'is', 'known', 'to', 'possess', 'this', 'strange', 'property', 'we', 'prove', 'that', 'there', 'are', 'new', 'systems', 'possessing', 'this', 'property', 'in', 'qfourier', 'analysis', 'as', 'application', 'we', 'give', 'a', 'new', 'sampling', 'formula', 'with', 'qn', 'as', 'sampling', 'points', 'where', '0', 'q', '1']] | [-0.17561810202059452, 0.09849798108671473, -0.14584667705459875, 0.12443940378490081, -0.11129039274319337, -0.14135310039436969, -0.006028248520379656, 0.39545653392089886, -0.25783539107174014, -0.1925725101838621, 0.09235892032490248, -0.2500432442502234, -0.20022395054359785, 0.2057448838670016, -0.036938270302803326, 0.06438432750030515, 0.02317171990400536, 0.024819554931096985, -0.13865858612561158, -0.20370804627289932, 0.31841740711707245, -0.03820772261589012, 0.23747250249902352, -0.06490523135796414, 0.08731439635890086, 0.02318717629041816, 0.03572083067860496, -0.05555794424190332, -0.11304767375716775, 0.06500504930828059, 0.24735699038628195, 0.15352131659949847, 0.2592318380157348, -0.357784221744102, -0.15359069501688138, 0.16736348327170805, 0.15581649773115858, 0.03143755234961053, -0.0922192131650498, -0.2356285859040623, 0.08734928247299087, -0.15640670146395483, -0.213336099451931, -0.11324125880197611, 0.03459425126150083, 0.1213649940007272, -0.2744726067241491, 0.07755009186149345, 0.1468068233094691, 0.044148413493203816, -0.06211643122931879, -0.15365532161851067, -0.031108165578393455, 0.07363566601900069, 0.03032744650498786, 0.07006519807377055, 0.017126129639303583, -0.07457490660919902, -0.08496732847487784, 0.39759034902024804, 0.0027894142575645713, -0.2868943621687005, 0.205180789773049, -0.1888192055087662, -0.17287585069425404, 0.11588806022361466, 0.13537510464574848, 0.11485938553101896, -0.10009141522721293, 0.12482594266884406, -0.12203212531271726, 0.11016886900022124, 0.11832259321752726, 0.13731910036013492, 0.13862671825794107, 0.045745220317850624, 0.10094129934572102, 0.13865185112579925, -0.014428265660927956, -0.05073871932337793, -0.33569217340371915, -0.1671384246287386, -0.2238183349418046, 0.06671896079009702, -0.11182983486430478, -0.23898975417185364, 0.3430847960021975, 0.03331899742551378, 0.1855366861024542, 0.07556567144229631, 0.21579831918136458, 0.18238849142890717, 0.06766272370776769, 0.0658815769803072, 0.20088381762877944, 0.16347926189034676, 0.06355332918569781, -0.08848771696721905, -0.018901387527794314, 0.0815295862201392] |
707.2729 | q-Sturm-Liouville theory and the corresponding eigenfunction expansions | The aim of this paper is to study the $q$-Schr\"{o}dinger operator $$ L=
q(x)-\Delta_q, $$ where $q(x)$ is a given function of $x$ defined over
$\mathbb{R}_{q}^{+}=\{q^n,\quad n\in\mathbb Z\}$ and $\Delta_q$ is the
$q$-Laplace operator $$ \Delta_{q}f(x)=\frac{1}{x^{2}}[
f(q^{-1}x)-\frac{1+q}{q}f(x)+\frac{1}{q}f(qx)]. $$
| math.CA | the aim of this paper is to study the qschrodinger operator l qxdelta_q where qx is a given function of x defined over mathbbr_qqnquad ninmathbb z and delta_q is the qlaplace operator delta_qfxfrac1x2 fq1xfrac1qqfxfrac1qfqx | [['the', 'aim', 'of', 'this', 'paper', 'is', 'to', 'study', 'the', 'qschrodinger', 'operator', 'l', 'qxdelta_q', 'where', 'qx', 'is', 'a', 'given', 'function', 'of', 'x', 'defined', 'over', 'mathbbr_qqnquad', 'ninmathbb', 'z', 'and', 'delta_q', 'is', 'the', 'qlaplace', 'operator', 'delta_qfxfrac1x2', 'fq1xfrac1qqfxfrac1qfqx']] | [-0.19207600227867563, 0.07374506754179795, -0.06436055784967418, 0.019392577473384638, -0.0700385744838665, -0.1335547437115262, -0.014292174356523902, 0.3451769405355056, -0.3441365289191405, -0.14869250181751947, 0.07059952142687204, -0.3101197802772125, -0.16037701244155567, 0.11796184034707645, -0.07030100869014859, 0.04276874683176478, -0.061723933989803, 0.09204382171543936, -0.09689110967641075, -0.22370847798883914, 0.4149141818284988, -0.005800104575852553, 0.13057512600595753, 0.05105481414745251, 0.12981408204262454, 0.015020834235474467, -0.039704304995636146, -0.07165377127627531, -0.19183756321047743, 0.06194822583347559, 0.259250129510959, 0.10571110645929972, 0.28901707753539085, -0.2524689726686726, -0.08021101208869368, 0.21089712691803772, 0.16144410834337275, -0.11162072227646908, 0.07037820802070201, -0.23279664317766827, 0.1592625528263549, -0.15788688709338505, -0.13862369700024527, 0.021995420381426812, 0.1150174060370773, 0.029160652053542437, -0.38028314610322317, 0.025165984127670526, 0.07679151836782694, 0.07967197503894567, 0.0006915040935079257, -0.11743884347379208, -0.057321610115468505, 0.049253165329961726, 0.015899726011169454, 0.2162881239084527, 0.05248109431316455, -0.072176708758343, -0.009427977725863457, 0.3534750071664651, -0.0708802062086761, -0.24841198585927488, 0.05452917474322021, -0.23586139297112824, -0.07563545356194178, 0.01559202012916406, 0.11250385713453094, 0.1897430881857872, -0.13375454358756542, 0.302627652726369, -0.10479797919591267, 0.12017968334257603, 0.004865456434587637, -0.002849725820124149, 0.05948233918752521, 0.11970174291976339, 0.08139955489896238, 0.1161981095870336, 0.002078448577473561, 0.0032139834171781936, -0.3951023648182551, -0.22728343345224858, -0.20659484957965712, 0.14995804655676087, -0.04502307696529897, -0.13450267190734547, 0.41443969681859016, 0.10021381881088018, 0.2657005173464616, 0.06174889390046398, 0.19240903916458288, 0.23507100033263365, 0.011044444696744904, 0.03890866998893519, 0.03209610755244891, 0.1651136791566387, 0.08835032493419324, -0.19784758840687572, 0.0060105519369244576, 0.16286960951983928] |
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