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707.293 | Strong saturation absorption imaging of dense clouds of ultracold atoms | We report on a far above saturation absorption imaging technique to
investigate the characteristics of dense packets of ultracold atoms. The
transparency of the cloud is controlled by the incident light intensity as a
result of the non-linear response of the atoms to the probe beam. We detail our
experimental procedure to calibrate the imaging system for reliable
quantitative measurements, and demonstrate the use of this technique to extract
the profile and its spatial extent of an optically thick atomic cloud.
| physics.optics physics.atom-ph | we report on a far above saturation absorption imaging technique to investigate the characteristics of dense packets of ultracold atoms the transparency of the cloud is controlled by the incident light intensity as a result of the nonlinear response of the atoms to the probe beam we detail our experimental procedure to calibrate the imaging system for reliable quantitative measurements and demonstrate the use of this technique to extract the profile and its spatial extent of an optically thick atomic cloud | [['we', 'report', 'on', 'a', 'far', 'above', 'saturation', 'absorption', 'imaging', 'technique', 'to', 'investigate', 'the', 'characteristics', 'of', 'dense', 'packets', 'of', 'ultracold', 'atoms', 'the', 'transparency', 'of', 'the', 'cloud', 'is', 'controlled', 'by', 'the', 'incident', 'light', 'intensity', 'as', 'a', 'result', 'of', 'the', 'nonlinear', 'response', 'of', 'the', 'atoms', 'to', 'the', 'probe', 'beam', 'we', 'detail', 'our', 'experimental', 'procedure', 'to', 'calibrate', 'the', 'imaging', 'system', 'for', 'reliable', 'quantitative', 'measurements', 'and', 'demonstrate', 'the', 'use', 'of', 'this', 'technique', 'to', 'extract', 'the', 'profile', 'and', 'its', 'spatial', 'extent', 'of', 'an', 'optically', 'thick', 'atomic', 'cloud']] | [-0.06791389534640828, 0.09922750230557371, -0.07761201643051556, 0.023015927319288438, -0.008465804734531745, -0.07055053840977726, 0.08811620937913288, 0.43394004739820957, -0.2877775329498597, -0.312913312105301, 0.06102737142233017, -0.28277206225435675, -0.06654313104342163, 0.19524540099096888, 0.003214328521057779, 0.0765675529981331, 0.024557088674218568, -0.04226383655676963, -0.0016702296726842536, -0.17013735761636017, 0.30519774253767584, 0.10416977793081766, 0.30791968455894586, 0.09828376916616603, 0.11583009696232131, 0.011795964181124245, -0.02529617001153069, -0.03495002182108568, -0.13099926917089355, 0.14942104961539124, 0.19979700070150472, 0.0989606093491692, 0.21001304945345095, -0.4436129142564756, -0.2353874549591615, 0.025686963030171615, 0.1428549842194677, 0.14469418690229455, -0.0495708260619093, -0.28948896203512026, 0.026106729407875257, -0.10920737260653648, -0.21492444946327144, -0.07117670267406437, 0.0021656126381806385, 0.03950645365280869, -0.2652998615378215, 0.019287608046498563, 0.011222340281546853, 0.09208310915180194, -0.050377804911005554, -0.031038301006637882, 0.01510193622901024, 0.09391240496475847, -0.047564776318239764, 0.010487996590795157, 0.20237351808536017, -0.16368782787905706, -0.030846900007699008, 0.3829559864775266, -0.09254142150777266, -0.08968151713732953, 0.18225880085640114, -0.16257607193525742, -0.036423184621481246, 0.14115379642649198, 0.19985424780091385, 0.13679172378177124, -0.13819652552038064, -0.008452106832043716, -0.07282509512187522, 0.22335824780137403, 0.06861403238396217, 0.09292487733434011, 0.18636094449938814, 0.19629017766680062, 0.0508693294070753, 0.18443619028699618, -0.188687155911423, -0.011682733686433898, -0.2482445689700084, -0.14658256698928682, -0.17380756109286052, 0.01876706140184844, -0.036792253201215146, -0.1359340477516346, 0.4058325302292719, 0.21511200422214138, 0.21406146205737497, -0.057092909045793394, 0.38346160644734345, 0.11407103425575948, 0.04827534919029769, -0.03577603394004666, 0.290333878064965, 0.1645335820014876, 0.1279318573148806, -0.29360056068909207, 0.039745902697222286, -0.026326907499704833] |
707.2931 | Fog and Dew Collection Projects in Croatia | The present paper discusses the fog and dew water collection in Croatia.
Zavizan, the highest meteorological station in Croatia(1594m) is chosen for
collecting of fog water with a standard fog collector (SFC). The highest daily
collection rate was 27.8 L / m2. The highest daily collection rate in days
without rain was 19.1 l/m2. Dew is also a noticeable source of water,
especially during the drier summer season. Dew condensers in Croatia have been
installed on the Adriatic coast (Zadar) and islands Vis and Bisevo. We report
and discuss the data collected since 2003. In the small Bisevo island, a
special roof has been designed to improve the formation and collection of dew
on a house. Data from April 2005 will be presented and discussed.
| physics.flu-dyn | the present paper discusses the fog and dew water collection in croatia zavizan the highest meteorological station in croatia1594m is chosen for collecting of fog water with a standard fog collector sfc the highest daily collection rate was 278 l m2 the highest daily collection rate in days without rain was 191 lm2 dew is also a noticeable source of water especially during the drier summer season dew condensers in croatia have been installed on the adriatic coast zadar and islands vis and bisevo we report and discuss the data collected since 2003 in the small bisevo island a special roof has been designed to improve the formation and collection of dew on a house data from april 2005 will be presented and discussed | [['the', 'present', 'paper', 'discusses', 'the', 'fog', 'and', 'dew', 'water', 'collection', 'in', 'croatia', 'zavizan', 'the', 'highest', 'meteorological', 'station', 'in', 'croatia1594m', 'is', 'chosen', 'for', 'collecting', 'of', 'fog', 'water', 'with', 'a', 'standard', 'fog', 'collector', 'sfc', 'the', 'highest', 'daily', 'collection', 'rate', 'was', '278', 'l', 'm2', 'the', 'highest', 'daily', 'collection', 'rate', 'in', 'days', 'without', 'rain', 'was', '191', 'lm2', 'dew', 'is', 'also', 'a', 'noticeable', 'source', 'of', 'water', 'especially', 'during', 'the', 'drier', 'summer', 'season', 'dew', 'condensers', 'in', 'croatia', 'have', 'been', 'installed', 'on', 'the', 'adriatic', 'coast', 'zadar', 'and', 'islands', 'vis', 'and', 'bisevo', 'we', 'report', 'and', 'discuss', 'the', 'data', 'collected', 'since', '2003', 'in', 'the', 'small', 'bisevo', 'island', 'a', 'special', 'roof', 'has', 'been', 'designed', 'to', 'improve', 'the', 'formation', 'and', 'collection', 'of', 'dew', 'on', 'a', 'house', 'data', 'from', 'april', '2005', 'will', 'be', 'presented', 'and', 'discussed']] | [-0.09127269636158745, 0.11716456970340815, -0.03655743490055423, 0.021454090188930453, -0.043389030260683484, -0.09106327521912128, 0.08586030646262519, 0.3590615006719379, -0.16675923539309942, -0.3513951520083331, 0.18008856011550686, -0.3397666558001128, -0.08685986219490525, 0.20844542289137089, -0.16304741472694553, 0.030984049647295175, 0.1066730112451747, 0.01288229101846198, 0.041998007593034695, -0.29089279047667416, 0.2110322741791606, 0.18302231903399238, 0.36133516748913197, 0.09905209330775376, 0.10782358540464662, -0.0344168671618114, -0.09766277576554097, -0.05753227717736188, -0.10478389945601214, 0.06674113261568196, 0.2846948101396571, 0.15593445299881972, 0.23210724975381578, -0.4178452626215059, -0.17889347239475728, 0.06424033081456393, 0.03635823696523028, -0.001896014832304556, -0.02090332973474527, -0.26281402103540275, 0.05642713353300992, -0.20030769057759717, -0.10034740205189925, 0.08448564386809197, 0.06881779829478439, 0.03304275501315959, -0.221500675489406, 0.00623844945270122, -0.04250369026881306, 0.15029870437755555, -0.051601130597512514, -0.1931363953876176, -0.08369341607698623, 0.15219787570859203, -0.0021096484993874025, 0.04588556200258058, 0.1356514150691571, -0.0561026524705421, -0.022021227555365123, 0.3694004095159471, -0.0752937307956965, -0.0380826354175493, 0.15951557859715795, -0.17555816717711942, -0.11969245115232442, 0.15169826764398167, 0.23703587686783878, 0.048548213321668636, -0.18283307024849063, 0.03604613729075631, -0.04513630668530945, 0.13710267165824458, 0.16250702802154446, -0.08415472774351594, 0.22881097972643474, 0.21192985933817954, 0.06501268213389817, 0.14393464460902447, -0.23529190067280115, -0.05601753463514713, -0.21856439767890617, -0.1655697011537537, -0.14531499232329867, -0.010372962861345345, -0.023270606215184304, -0.10100783420210126, 0.38386397449565784, 0.12370930176165675, 0.1283957095339331, -0.017686100932965132, 0.25295675558452846, 0.04416768254414827, 0.07333285898457383, 0.1207637526603619, 0.2215184964583952, 0.005933047147045115, 0.2472265876532227, -0.14852084314397795, 0.09029001292592588, 0.015560475520460922] |
707.2932 | Superbosonization formula and its application to random matrix theory | Starting from Gaussian random matrix models we derive a new supermatrix field
theory model. In contrast to the conventional non-linear sigma models, the new
model is applicable for any range of correlations of the elements of the random
matrices. We clarify the domain of integration for the supermatrices, and give
a demonstration of how the model works by calculating the density of states for
an ensemble of almost diagonal matrices. It is also shown how one can reduce
the supermatrix model to the conventional sigma model.
| cond-mat.mes-hall | starting from gaussian random matrix models we derive a new supermatrix field theory model in contrast to the conventional nonlinear sigma models the new model is applicable for any range of correlations of the elements of the random matrices we clarify the domain of integration for the supermatrices and give a demonstration of how the model works by calculating the density of states for an ensemble of almost diagonal matrices it is also shown how one can reduce the supermatrix model to the conventional sigma model | [['starting', 'from', 'gaussian', 'random', 'matrix', 'models', 'we', 'derive', 'a', 'new', 'supermatrix', 'field', 'theory', 'model', 'in', 'contrast', 'to', 'the', 'conventional', 'nonlinear', 'sigma', 'models', 'the', 'new', 'model', 'is', 'applicable', 'for', 'any', 'range', 'of', 'correlations', 'of', 'the', 'elements', 'of', 'the', 'random', 'matrices', 'we', 'clarify', 'the', 'domain', 'of', 'integration', 'for', 'the', 'supermatrices', 'and', 'give', 'a', 'demonstration', 'of', 'how', 'the', 'model', 'works', 'by', 'calculating', 'the', 'density', 'of', 'states', 'for', 'an', 'ensemble', 'of', 'almost', 'diagonal', 'matrices', 'it', 'is', 'also', 'shown', 'how', 'one', 'can', 'reduce', 'the', 'supermatrix', 'model', 'to', 'the', 'conventional', 'sigma', 'model']] | [-0.07040356061026064, 0.11660843363812133, -0.08048840390171769, 0.07268398893498924, -0.01915896360134316, -0.13110237208000103, 0.023914740503451593, 0.327923983270519, -0.27331752245325247, -0.25677028571277166, 0.07833472565005989, -0.26070604108403933, -0.1985609680847373, 0.1584902456528399, -0.027296502662952558, 0.0509499306573944, 0.01480526530162193, 0.06016131091949552, -0.12297476078167038, -0.21945298580062944, 0.3323656308497194, 0.042318624877479186, 0.2817534522673245, 0.007148594297685249, 0.11446797009557486, 0.027297915874568875, -0.01661213107277141, -0.01351262110171753, -0.07911588944667994, 0.14258597199304224, 0.1932698875097294, 0.12048568056766377, 0.19866175048573073, -0.4313800058944887, -0.27696153737582957, 0.1183209394992784, 0.12165804772616126, 0.16381201511898705, 0.001586461059348441, -0.251925230805957, 0.0698269055939691, -0.1900285019777542, -0.15102511318400502, -0.08432432294682447, -0.00795262415357324, -0.012737082257910176, -0.32557099689404634, 0.07371352009473878, 0.08116355851335927, 0.010230595527520014, -0.04997062683105469, -0.157132632196556, 0.03228167632897926, 0.12045088352982042, -0.0019164166784152216, 0.016901399669518997, 0.08202276353962547, -0.13680165512270706, -0.11656076892625628, 0.37769736847731955, -0.09816373456919263, -0.2539699752436041, 0.14077262265261176, -0.10324821188547757, -0.09984309017809845, 0.08033346821185808, 0.16108036449525592, 0.10942140035331249, -0.15599828985584682, 0.14452672016544288, -0.07288569977728997, 0.17239195177721423, -0.026885736354648374, -0.02457138655577288, 0.16727169248990195, 0.13963058696474967, 0.04955444796833881, 0.12794647726966718, -0.06304748605958424, -0.12678285971348888, -0.3263188261798648, -0.1435320598051645, -0.19424283495281153, 0.03138557959044742, -0.1253031200814253, -0.1930884792111397, 0.432783352969171, 0.1988645422239896, 0.20619988212968374, 0.08899240975463113, 0.24039599986010513, 0.16859417071912525, 0.07146550934805079, 0.01485497239154092, 0.18544599822137592, 0.21550714973154542, 0.05128574899809305, -0.1624769288721646, 0.019404049405048408, 0.07182730660979571] |
707.2933 | Photoactivation at a clinical LINAC: The 197Au(gamma,n)196Au reaction
slightly above threshold | The properties of a clinical LINAC are investigated for a study of
photoactivation cross sections slightly above the neutron threshold. As an
example, the photoactivation of a tiny amount of gold by the
197Au(gamma,n)196Au reaction has been measured. The derived photon intensity is
at least comparable to conventional and widely used photon sources. In
combination with its extremely stable operation, a clinical LINAC ensures that
photoactivation studies can be performed for a wide number of targets with very
limited beamtime.
| nucl-ex | the properties of a clinical linac are investigated for a study of photoactivation cross sections slightly above the neutron threshold as an example the photoactivation of a tiny amount of gold by the 197augamman196au reaction has been measured the derived photon intensity is at least comparable to conventional and widely used photon sources in combination with its extremely stable operation a clinical linac ensures that photoactivation studies can be performed for a wide number of targets with very limited beamtime | [['the', 'properties', 'of', 'a', 'clinical', 'linac', 'are', 'investigated', 'for', 'a', 'study', 'of', 'photoactivation', 'cross', 'sections', 'slightly', 'above', 'the', 'neutron', 'threshold', 'as', 'an', 'example', 'the', 'photoactivation', 'of', 'a', 'tiny', 'amount', 'of', 'gold', 'by', 'the', '197augamman196au', 'reaction', 'has', 'been', 'measured', 'the', 'derived', 'photon', 'intensity', 'is', 'at', 'least', 'comparable', 'to', 'conventional', 'and', 'widely', 'used', 'photon', 'sources', 'in', 'combination', 'with', 'its', 'extremely', 'stable', 'operation', 'a', 'clinical', 'linac', 'ensures', 'that', 'photoactivation', 'studies', 'can', 'be', 'performed', 'for', 'a', 'wide', 'number', 'of', 'targets', 'with', 'very', 'limited', 'beamtime']] | [-0.05827667525618726, 0.1439485169928359, -0.06348414539655706, 0.0639485436199893, 0.012629893290091164, -0.13071282467321504, 0.04287948329119554, 0.400957581787547, -0.1967826574286328, -0.3279056102273208, 0.07881700408297201, -0.300607457992774, -0.003685897463767589, 0.29926197035120256, -0.009173042553512357, 0.10069838082462054, 0.08375143319592351, 0.05657958075451323, -0.015411203205467591, -0.18723777814950981, 0.2472536377962443, 0.13727486908695177, 0.31666751617648276, 0.08509502963964603, 0.13451555302908905, -0.005210358737908964, 0.01406272326277781, 0.0010383334128728397, -0.060443508881310004, 0.09322656554912653, 0.3153241676148735, 0.09410719093395091, 0.24692126627587066, -0.3967117477632776, -0.23007069176793854, 0.10693025006470565, 0.11751748349729783, 0.08264030941726663, -0.0993212141638881, -0.23322014214730338, 0.13235690744735207, -0.18427320291535765, -0.12243303814254512, -0.03586829683590162, 0.0010030444334202175, 0.06170594452031523, -0.2696359828180822, 0.015188604419390801, -0.0318465278177416, 0.07801520362307754, -0.030733408307644858, -0.14957654283417365, -0.009676753743728506, 0.07149976807280997, 0.04056711638452414, 0.03399524365918699, 0.16406520034033287, -0.14258552956265175, -0.09208705052261866, 0.3662641767436002, -0.05833240808282472, -0.11503675372540197, 0.15988931284121038, -0.15047351642853662, -0.07610539973218323, 0.20732890007593022, 0.16482872801723808, 0.16453037228246656, -0.1792729663945546, 0.0004928613522184328, 0.013279186302348029, 0.21590837600487697, 0.10675309791194298, 0.0314737675664357, 0.1702480290970718, 0.2477968091342622, 0.00849626239837159, 0.11934529732075767, -0.1756498525508597, -0.008369529419401778, -0.28099034216750085, -0.09932771813171574, -0.14579621990081632, 0.04938513928393633, 0.001662553046554433, -0.12225938608348251, 0.353242180828901, 0.053990987418337334, 0.1974859875980529, -0.02979470527719093, 0.31010138200996795, 0.1119702433138685, 0.11119305931585782, -0.01705474882162636, 0.29224528742459, 0.14825299224533328, 0.07561951530272071, -0.19041817159615929, 0.11564263206894827, -0.05604420829847266] |
707.2934 | Instrumented Collective Learning Situations (ICLS): the Gap between
Theoretical Research and Observed Practices | According to socio-constructivism approach, collective situations are
promoted to favor learning in classroom, at a distance or in a blended
educational context. So, many Information and Communication Technologies (ICT)
are provided to teachers but there are no clear studies about the way they are
used and perceived. Our research is based on the hypothesis that practices of
educational actors (instructional designers and tutors) are far away from
theoretical results of research in education technologies. In this paper, we
consider a precise kind of situation: Instrumented Collective Learning
Situations (ICLS). By a survey on 13 fields in higher education in France,
Switzerland and Canada, we present how ICLS are designed and how teachers used
them. Conclusions give an indication on the gap between the way information
technologies are prescribed and the way they are actually used and perceived by
teachers.
| cs.CY | according to socioconstructivism approach collective situations are promoted to favor learning in classroom at a distance or in a blended educational context so many information and communication technologies ict are provided to teachers but there are no clear studies about the way they are used and perceived our research is based on the hypothesis that practices of educational actors instructional designers and tutors are far away from theoretical results of research in education technologies in this paper we consider a precise kind of situation instrumented collective learning situations icls by a survey on 13 fields in higher education in france switzerland and canada we present how icls are designed and how teachers used them conclusions give an indication on the gap between the way information technologies are prescribed and the way they are actually used and perceived by teachers | [['according', 'to', 'socioconstructivism', 'approach', 'collective', 'situations', 'are', 'promoted', 'to', 'favor', 'learning', 'in', 'classroom', 'at', 'a', 'distance', 'or', 'in', 'a', 'blended', 'educational', 'context', 'so', 'many', 'information', 'and', 'communication', 'technologies', 'ict', 'are', 'provided', 'to', 'teachers', 'but', 'there', 'are', 'no', 'clear', 'studies', 'about', 'the', 'way', 'they', 'are', 'used', 'and', 'perceived', 'our', 'research', 'is', 'based', 'on', 'the', 'hypothesis', 'that', 'practices', 'of', 'educational', 'actors', 'instructional', 'designers', 'and', 'tutors', 'are', 'far', 'away', 'from', 'theoretical', 'results', 'of', 'research', 'in', 'education', 'technologies', 'in', 'this', 'paper', 'we', 'consider', 'a', 'precise', 'kind', 'of', 'situation', 'instrumented', 'collective', 'learning', 'situations', 'icls', 'by', 'a', 'survey', 'on', '13', 'fields', 'in', 'higher', 'education', 'in', 'france', 'switzerland', 'and', 'canada', 'we', 'present', 'how', 'icls', 'are', 'designed', 'and', 'how', 'teachers', 'used', 'them', 'conclusions', 'give', 'an', 'indication', 'on', 'the', 'gap', 'between', 'the', 'way', 'information', 'technologies', 'are', 'prescribed', 'and', 'the', 'way', 'they', 'are', 'actually', 'used', 'and', 'perceived', 'by', 'teachers']] | [-0.026988304746539696, 0.11918054529445911, -0.10463708076302124, 0.11370094710002666, -0.14068773083145852, -0.15991458125358474, 0.0660226020103226, 0.44917774262527627, -0.1942145285596042, -0.37377735597175965, 0.0884006676092015, -0.3154700371720221, -0.18332535417352303, 0.20686069983766292, -0.15162394549427688, -0.017052069178148024, 0.056793093271351056, 0.05034872809462114, -0.0095288015917227, -0.2911341467052293, 0.3020068545913513, 0.0682096030458511, 0.3420709394512401, 0.05749763952622163, 0.036059007163335016, -0.04983441694639623, -0.05496476234301277, -0.012593212632424, -0.1200449366641397, 0.18616792874788676, 0.42371287581698963, 0.229227019895705, 0.39380566594933253, -0.4392973812620925, -0.13736297325501085, 0.05395910080414319, 0.13785727029544828, 0.07871037793845154, -0.07841267703570075, -0.3399365271873556, 0.03059528750937729, -0.19014730622344042, -0.10945655065723628, -0.08268044608226721, -0.042525998924089516, 0.0025497413775208743, -0.21371550072133, -0.022061865230131407, 0.03940940958252041, 0.1779816221864219, -0.03576599869478926, -0.15203802040238204, 0.032444430122057485, 0.20837074823751775, 0.07065583774026996, 0.021318881605427876, 0.1649653264692566, -0.16020824160406608, -0.14046754632685063, 0.37742383446058503, 0.02873765336741032, -0.1791410380029592, 0.2407883183888929, -0.1121264214667937, -0.1241747052712447, 0.00774635485984196, 0.24316821595572907, 0.060017702979562076, -0.17435779668174792, 0.018961282147084483, 0.021485178832612608, 0.14690621802583337, 0.05244802339407413, 0.011279446514073652, 0.2629394218683297, 0.15111271497806994, 0.05596022732366902, 0.04957538599020167, -0.0002084900551236005, -0.10649760793287145, -0.278662758137005, -0.13893600947736506, -0.13323901522486215, 0.0037303170513199725, 0.015281361390130452, -0.06617255413052128, 0.32713950350644416, 0.19192839162154257, 0.0794585621257758, -0.014885363629614205, 0.28541033920170605, 0.011333213750428209, 0.09207557041899882, 0.09293416421185585, 0.24461477535542275, 0.028390777627161395, 0.21593096560420658, -0.08298293389278748, 0.09637810308756171, -0.03831381545540458] |
707.2935 | X-ray Observations and Infrared Identification of the Transient 7.8 s
X-ray Binary Pulsar XTE J1829-098 | XMM-Newton and Chandra observations of the transient 7.8 s pulsar XTE
J1829-098 are used to characterize its pulse shape and spectrum, and to
facilitate a search for an optical or infrared counterpart. In outburst, the
absorbed, hard X-ray spectrum with Gamma = 0.76+/-0.13 and N_H = (6.0+/-0.6) x
10^{22} cm^{-2} is typical of X-ray binary pulsars. The precise Chandra
localization in a faint state leads to the identification of a probable
infrared counterpart at R.A. = 18h29m43.98s, decl. = -09o51'23.0" (J2000.0)
with magnitudes K=12.7, H=13.9, I>21.9, and R>23.2. If this is a highly
reddened O or B star, we estimate a distance of 10 kpc, at which the maximum
observed X-ray luminosity is 2x10^{36} ergs s^{-1}, typical of Be X-ray
transients or wind-fed systems. The minimum observed luminosity is
3x10^{32}(d/10 kpc)^2 ergs s^{-1}. We cannot rule out the possibility that the
companion is a red giant. The two known X-ray outbursts of XTE J1829-098 are
separated by ~1.3 yr, which may be the orbital period or a multiple of it, with
the neutron star in an eccentric orbit. We also studied a late M-giant
long-period variable that we found only 9" from the X-ray position. It has a
pulsation period of ~1.5 yr, but is not the companion of the X-ray source.
| astro-ph | xmmnewton and chandra observations of the transient 78 s pulsar xte j1829098 are used to characterize its pulse shape and spectrum and to facilitate a search for an optical or infrared counterpart in outburst the absorbed hard xray spectrum with gamma 076013 and n_h 6006 x 1022 cm2 is typical of xray binary pulsars the precise chandra localization in a faint state leads to the identification of a probable infrared counterpart at ra 18h29m4398s decl 09o51230 j20000 with magnitudes k127 h139 i219 and r232 if this is a highly reddened o or b star we estimate a distance of 10 kpc at which the maximum observed xray luminosity is 2x1036 ergs s1 typical of be xray transients or windfed systems the minimum observed luminosity is 3x1032d10 kpc2 ergs s1 we cannot rule out the possibility that the companion is a red giant the two known xray outbursts of xte j1829098 are separated by 13 yr which may be the orbital period or a multiple of it with the neutron star in an eccentric orbit we also studied a late mgiant longperiod variable that we found only 9 from the xray position it has a pulsation period of 15 yr but is not the companion of the xray source | [['xmmnewton', 'and', 'chandra', 'observations', 'of', 'the', 'transient', '78', 's', 'pulsar', 'xte', 'j1829098', 'are', 'used', 'to', 'characterize', 'its', 'pulse', 'shape', 'and', 'spectrum', 'and', 'to', 'facilitate', 'a', 'search', 'for', 'an', 'optical', 'or', 'infrared', 'counterpart', 'in', 'outburst', 'the', 'absorbed', 'hard', 'xray', 'spectrum', 'with', 'gamma', '076013', 'and', 'n_h', '6006', 'x', '1022', 'cm2', 'is', 'typical', 'of', 'xray', 'binary', 'pulsars', 'the', 'precise', 'chandra', 'localization', 'in', 'a', 'faint', 'state', 'leads', 'to', 'the', 'identification', 'of', 'a', 'probable', 'infrared', 'counterpart', 'at', 'ra', '18h29m4398s', 'decl', '09o51230', 'j20000', 'with', 'magnitudes', 'k127', 'h139', 'i219', 'and', 'r232', 'if', 'this', 'is', 'a', 'highly', 'reddened', 'o', 'or', 'b', 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0.15508042384324727, 0.342295632307239, 0.16180800993672825, 0.10081824456633191, -0.2233861331073003, 0.06611116151701697, 4.037589098166938e-07] |
707.2936 | Anomalous dimensions of leading twist conformal operators | We extend and develop a method for perturbative calculations of anomalous
dimensions and mixing matrices of leading twist conformal primary operators in
conformal field theories. Such operators lie on the unitarity bound and hence
are conserved (irreducible) in the free theory. The technique relies on the
known pattern of breaking of the irreducibility conditions in the interacting
theory. We relate the divergence of the conformal operators via the field
equations to their descendants involving an extra field and accompanied by an
extra power of the coupling constant. The ratio of the two-point functions of
descendants and of their primaries determines the anomalous dimension, allowing
us to gain an order of perturbation theory. We demonstrate the efficiency of
the formalism on the lowest-order analysis of anomalous dimensions and mixing
matrices which is required for two-loop calculations of the former. We compare
these results to another method based on anomalous conformal Ward identities
and constraints from the conformal algebra. It also permits to gain a
perturbative order in computations of mixing matrices. We show the complete
equivalence of both approaches.
| hep-th | we extend and develop a method for perturbative calculations of anomalous dimensions and mixing matrices of leading twist conformal primary operators in conformal field theories such operators lie on the unitarity bound and hence are conserved irreducible in the free theory the technique relies on the known pattern of breaking of the irreducibility conditions in the interacting theory we relate the divergence of the conformal operators via the field equations to their descendants involving an extra field and accompanied by an extra power of the coupling constant the ratio of the twopoint functions of descendants and of their primaries determines the anomalous dimension allowing us to gain an order of perturbation theory we demonstrate the efficiency of the formalism on the lowestorder analysis of anomalous dimensions and mixing matrices which is required for twoloop calculations of the former we compare these results to another method based on anomalous conformal ward identities and constraints from the conformal algebra it also permits to gain a perturbative order in computations of mixing matrices we show the complete equivalence of both approaches | [['we', 'extend', 'and', 'develop', 'a', 'method', 'for', 'perturbative', 'calculations', 'of', 'anomalous', 'dimensions', 'and', 'mixing', 'matrices', 'of', 'leading', 'twist', 'conformal', 'primary', 'operators', 'in', 'conformal', 'field', 'theories', 'such', 'operators', 'lie', 'on', 'the', 'unitarity', 'bound', 'and', 'hence', 'are', 'conserved', 'irreducible', 'in', 'the', 'free', 'theory', 'the', 'technique', 'relies', 'on', 'the', 'known', 'pattern', 'of', 'breaking', 'of', 'the', 'irreducibility', 'conditions', 'in', 'the', 'interacting', 'theory', 'we', 'relate', 'the', 'divergence', 'of', 'the', 'conformal', 'operators', 'via', 'the', 'field', 'equations', 'to', 'their', 'descendants', 'involving', 'an', 'extra', 'field', 'and', 'accompanied', 'by', 'an', 'extra', 'power', 'of', 'the', 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707.2937 | Excitation Spectra of Correlated Lattice Bosons in a Confining Trap | We consider ultracold bosonic atoms in an optical lattice with an external
trapping potential. To study the excitation energies of the resulting
Bose-Hubbard model, we develop a method based on a time-dependent
generalization of the Gutzwiller ansatz. We calculate the excitations of the
homogeneous system both in insulating and superfluid regime, concentrating
particularly on those near the superfluid-Mott insulator boundary. Low-lying
excitation energies in presence of a static harmonic trap are obtained using
this method and compared with the homogeneous case. Further, we explore the
dynamics of the center of mass and the breathing mode in response to
time-dependent perturbations of the trap.
| cond-mat.stat-mech | we consider ultracold bosonic atoms in an optical lattice with an external trapping potential to study the excitation energies of the resulting bosehubbard model we develop a method based on a timedependent generalization of the gutzwiller ansatz we calculate the excitations of the homogeneous system both in insulating and superfluid regime concentrating particularly on those near the superfluidmott insulator boundary lowlying excitation energies in presence of a static harmonic trap are obtained using this method and compared with the homogeneous case further we explore the dynamics of the center of mass and the breathing mode in response to timedependent perturbations of the trap | [['we', 'consider', 'ultracold', 'bosonic', 'atoms', 'in', 'an', 'optical', 'lattice', 'with', 'an', 'external', 'trapping', 'potential', 'to', 'study', 'the', 'excitation', 'energies', 'of', 'the', 'resulting', 'bosehubbard', 'model', 'we', 'develop', 'a', 'method', 'based', 'on', 'a', 'timedependent', 'generalization', 'of', 'the', 'gutzwiller', 'ansatz', 'we', 'calculate', 'the', 'excitations', 'of', 'the', 'homogeneous', 'system', 'both', 'in', 'insulating', 'and', 'superfluid', 'regime', 'concentrating', 'particularly', 'on', 'those', 'near', 'the', 'superfluidmott', 'insulator', 'boundary', 'lowlying', 'excitation', 'energies', 'in', 'presence', 'of', 'a', 'static', 'harmonic', 'trap', 'are', 'obtained', 'using', 'this', 'method', 'and', 'compared', 'with', 'the', 'homogeneous', 'case', 'further', 'we', 'explore', 'the', 'dynamics', 'of', 'the', 'center', 'of', 'mass', 'and', 'the', 'breathing', 'mode', 'in', 'response', 'to', 'timedependent', 'perturbations', 'of', 'the', 'trap']] | [-0.13097362518672226, 0.16597342973341034, -0.04321592502314055, 0.019047564925237116, 0.037735156317069696, -0.13190018598587044, 0.06092532791052629, 0.38359047984252276, -0.19572863413599653, -0.2249935252537716, 0.02584462373707335, -0.29403567164503397, -0.10484990408864195, 0.15656329810537978, 0.057747026028346665, 0.04236110709426762, 0.020773847040367648, 0.02662864470519849, -0.08555796961706963, -0.17893543571134288, 0.33408777838916454, 0.05315382904779998, 0.28758894118652184, 0.059686540933416306, 0.019790719453136898, 0.033499538670158355, 0.08684674581711732, -0.014132443363371404, -0.16926676888941128, 0.11949457215977091, 0.16667931153734544, -0.05189702725399611, 0.22394246990946168, -0.46390495630143913, -0.2184408408616787, 0.07819467660907692, 0.15148325430826076, 0.22288512617566633, -0.05611574147303489, -0.3281811893289204, -0.05422952539486431, -0.1944628904926256, -0.20316640752394802, -0.12919566825538584, -0.023060522451363866, 0.029663721097235397, -0.2644549057371372, 0.09707895270322711, 0.01704194720436647, 0.08211743575365404, -0.18455397658212816, -0.04889020921314334, -0.015431587487115588, 0.039616085616057936, 0.0014485289157341117, 0.018728167367918255, 0.14573222260415844, -0.15099554266825824, -0.07062629942592343, 0.4000381120272632, -0.1219692637090508, -0.17517892005446467, 0.19864079619540823, -0.18161792831169893, -0.05078852339421661, 0.12583879422333127, 0.18398036458133946, 0.12239649522941089, -0.122219764699852, 0.08496788840173536, -0.027932602671445213, 0.13663637683640947, 0.03566829138209374, 0.040685032255884296, 0.2206283291277376, 0.18984420664689855, 0.03458486354539116, 0.2313253274368285, -0.14723350856570727, -0.1115624878094396, -0.2653847455580547, -0.10738530058133443, -0.21347754757972298, 0.029236854854247814, -0.03739322579956898, -0.20507517445253806, 0.43684774190097037, 0.14357360899877888, 0.17938219068698513, -0.017375961841237776, 0.25720143182998867, 0.16732534817736416, 0.006840880399624121, 0.06155212671107169, 0.267952104062927, 0.16335236875213754, 0.08179092109293758, -0.34910201508375516, -0.08927045913539755, 0.07839881912217413] |
707.2938 | Map of metastable states for thin circular magnetic nano-cylinders | Nano-magnetic systems of artificially shaped ferromagnetic islands, recently
became a popular subject due to their current and potential applications in
spintronics, magneto-photonics and superconductivity. When the island size is
close to the exchange length of magnetic material (around 15 nm), its magnetic
structure becomes markedly different. It determines both static and dynamic
magnetic properties of elements, but strongly depends on their shape and size.
Here we map this dependence for circular cylindrical islands of a few exchange
lengths in size. We outline the region of metastability of "C"-type magnetic
states, proving that they are indeed genuine and not a result of pinning on
particle imperfections. A way to create the smallest particles with guaranteed
magnetic vortex state at zero field becomes evident. It is expected that the
map will help focus the efforts in planning of experiments and devices.
| cond-mat.mes-hall cond-mat.mtrl-sci | nanomagnetic systems of artificially shaped ferromagnetic islands recently became a popular subject due to their current and potential applications in spintronics magnetophotonics and superconductivity when the island size is close to the exchange length of magnetic material around 15 nm its magnetic structure becomes markedly different it determines both static and dynamic magnetic properties of elements but strongly depends on their shape and size here we map this dependence for circular cylindrical islands of a few exchange lengths in size we outline the region of metastability of ctype magnetic states proving that they are indeed genuine and not a result of pinning on particle imperfections a way to create the smallest particles with guaranteed magnetic vortex state at zero field becomes evident it is expected that the map will help focus the efforts in planning of experiments and devices | [['nanomagnetic', 'systems', 'of', 'artificially', 'shaped', 'ferromagnetic', 'islands', 'recently', 'became', 'a', 'popular', 'subject', 'due', 'to', 'their', 'current', 'and', 'potential', 'applications', 'in', 'spintronics', 'magnetophotonics', 'and', 'superconductivity', 'when', 'the', 'island', 'size', 'is', 'close', 'to', 'the', 'exchange', 'length', 'of', 'magnetic', 'material', 'around', '15', 'nm', 'its', 'magnetic', 'structure', 'becomes', 'markedly', 'different', 'it', 'determines', 'both', 'static', 'and', 'dynamic', 'magnetic', 'properties', 'of', 'elements', 'but', 'strongly', 'depends', 'on', 'their', 'shape', 'and', 'size', 'here', 'we', 'map', 'this', 'dependence', 'for', 'circular', 'cylindrical', 'islands', 'of', 'a', 'few', 'exchange', 'lengths', 'in', 'size', 'we', 'outline', 'the', 'region', 'of', 'metastability', 'of', 'ctype', 'magnetic', 'states', 'proving', 'that', 'they', 'are', 'indeed', 'genuine', 'and', 'not', 'a', 'result', 'of', 'pinning', 'on', 'particle', 'imperfections', 'a', 'way', 'to', 'create', 'the', 'smallest', 'particles', 'with', 'guaranteed', 'magnetic', 'vortex', 'state', 'at', 'zero', 'field', 'becomes', 'evident', 'it', 'is', 'expected', 'that', 'the', 'map', 'will', 'help', 'focus', 'the', 'efforts', 'in', 'planning', 'of', 'experiments', 'and', 'devices']] | [-0.16662240890360883, 0.20273185989724984, -0.040947954119790506, 0.056906229451103, -0.06085900961340446, -0.11145227054889867, 0.0401889538405922, 0.39859805979590485, -0.2710601102250318, -0.32401785226133856, 0.07843281963141635, -0.2879625147519012, -0.1139475829710347, 0.20763636625834161, -0.01593832221017995, -0.0011447127136584047, 0.019672047507112333, 0.024466857418714873, -0.04680249843142414, -0.222408261644465, 0.2845399953590274, 0.04999084326614072, 0.3172664585897861, 0.09434788268349686, 0.038497138998312606, -0.0029992573233186335, 0.06037670334774083, 0.06587405523042315, -0.14048819660356326, 0.06689198872713925, 0.18587533796401828, 0.010148520324973093, 0.24318720601613808, -0.4704988889996826, -0.15167116724035662, 0.07347122871357462, 0.14663213823476565, 0.14384166492770115, -0.06125848541420925, -0.2637483003275955, 0.09851183822594475, -0.10789349278691562, -0.1765112360521596, -0.06140500968457132, 0.0701015502310601, 0.024592437747649958, -0.2378800988110437, 0.02126603990799977, 0.09183429803638517, 0.07644496666540837, -0.06621001078125066, -0.09490878341813991, -0.05219999107910131, 0.10306384060063663, 0.051707837585548776, 0.04118765317632452, 0.20029654565091798, -0.15794568540582407, -0.08081442218246883, 0.3531538554791199, 0.0068632386678802795, -0.1365852186091892, 0.2003245068008782, -0.1773503306692979, -0.07135101039623977, 0.15083024688773666, 0.1587454803571429, 0.10823256436961473, -0.0961015606629097, 0.08268601518458403, 0.010870887518293508, 0.18611506607545458, 0.04375682174788275, 0.07503816125698495, 0.28849303658943676, 0.2024595705114062, 0.0954426901779421, 0.14478986708285368, -0.1281842259467458, -0.10573589475656711, -0.2103242477591055, -0.12927048349334602, -0.19348204274580855, 0.02083782884943977, -0.06722793140321248, -0.2236003417764669, 0.37587310511456884, 0.1654061660292032, 0.18495111527622415, -0.03898861212655902, 0.2553791403905421, 0.06557663545633356, 0.1031298379049353, 0.07350900539102545, 0.2442302742367273, 0.16417818461237746, 0.14385207130850386, -0.23583832536351637, 0.09429500314434046, -0.030877641619831] |
707.2939 | The physics of randomness and regularities for languages (lifetimes,
family trees, and the second languages); in terms of random matrices | The physics of randomness and regularities for languages (mother tongues) and
their lifetimes and family trees and for the second languages are studied in
terms of two opposite processes; random multiplicative noise [1], and
fragmentation [2], where the original model is given in the matrix format. We
start with a random initial world, and come out with the regularities, which
mimic various empirical data [3] for the present languages.
| physics.soc-ph physics.comp-ph | the physics of randomness and regularities for languages mother tongues and their lifetimes and family trees and for the second languages are studied in terms of two opposite processes random multiplicative noise 1 and fragmentation 2 where the original model is given in the matrix format we start with a random initial world and come out with the regularities which mimic various empirical data 3 for the present languages | [['the', 'physics', 'of', 'randomness', 'and', 'regularities', 'for', 'languages', 'mother', 'tongues', 'and', 'their', 'lifetimes', 'and', 'family', 'trees', 'and', 'for', 'the', 'second', 'languages', 'are', 'studied', 'in', 'terms', 'of', 'two', 'opposite', 'processes', 'random', 'multiplicative', 'noise', '1', 'and', 'fragmentation', '2', 'where', 'the', 'original', 'model', 'is', 'given', 'in', 'the', 'matrix', 'format', 'we', 'start', 'with', 'a', 'random', 'initial', 'world', 'and', 'come', 'out', 'with', 'the', 'regularities', 'which', 'mimic', 'various', 'empirical', 'data', '3', 'for', 'the', 'present', 'languages']] | [-0.07831258013628531, 0.1560416973695375, -0.03698901854374487, 0.1413112320360201, -0.029121880406054897, -0.10727690718393179, 0.04816156437795987, 0.3591611067211066, -0.31425093353280553, -0.2849019319358943, 0.10951960163420417, -0.28591954991545365, -0.12007398695509502, 0.14595012679574607, -0.028592495018265385, 0.05958145739429671, 0.051097686712940536, 0.04818572211956632, -0.027426553721391203, -0.24209581809523312, 0.35750963424156973, -0.0129592998655162, 0.24520431958354902, -0.0430377435506038, 0.08157524445087419, -0.02420221445947022, -0.06245280280405575, -0.016353134572020044, -0.10002321732378956, 0.11239223860109737, 0.25128180645001325, 0.16916407612354858, 0.24714426010631133, -0.418303897658336, -0.16104475101725996, 0.09636815303963596, 0.09459569677373098, 0.10805464290804567, -0.021740274692791096, -0.28461170984108164, 0.08840383706020488, -0.160463969560637, -0.06411864887923002, -0.05036046668765661, 0.06818592364805331, 0.05473700589567855, -0.2843558658994194, 0.03364465983611518, 0.13027859117457832, 0.09015223010024731, -0.015391774829881995, -0.17286555794324132, -0.006946242706296776, 0.1554996585945828, 0.04973217969983006, -0.0027539552850783734, 0.0988415186630859, -0.1217691324165334, -0.17276546908744975, 0.39670007601903373, -0.017462120290197756, -0.20923903749148914, 0.2120270359741551, -0.1740274884454582, -0.16861199782621386, 0.09362103033176475, 0.19110671687108613, 0.03223537969524446, -0.15154291868911704, 0.09075761994893622, -0.015617872061936752, 0.15591864835848843, 0.11812049526370307, 0.02682449422992658, 0.17262862331868298, 0.14728190164348326, -0.026824292612086603, 0.13265006465540416, -0.05526348062709946, -0.1326908371478751, -0.2722729229624721, -0.11838356702777462, -0.1469185398756594, -0.0033583645236448965, -0.12686635575643607, -0.19224144060812567, 0.40516902219531115, 0.12978390858009242, 0.2193024532761479, 0.12814794576463653, 0.23097881431812825, 0.06020319810056168, 0.026905645905703685, 0.076829106533441, 0.13830900038390057, 0.08835935681797666, 0.13421349532470322, -0.10992851336123895, 0.10405551711691247, 0.01968417161454757] |
707.294 | The Hilbert space operator formalism within dynamical reduction models | Unlike standard quantum mechanics, dynamical reduction models assign no
particular a priori status to `measurement processes', `apparata', and
`observables', nor self-adjoint operators and positive operator valued measures
enter the postulates defining these models. In this paper, we show why and how
the Hilbert-space operator formalism, which standard quantum mechanics
postulates, can be derived from the fundamental evolution equation of dynamical
reduction models. Far from having any special ontological meaning, we show that
within the dynamical reduction context the operator formalism is just a compact
and convenient way to express the statistical properties of the outcomes of
experiments.
| quant-ph | unlike standard quantum mechanics dynamical reduction models assign no particular a priori status to measurement processes apparata and observables nor selfadjoint operators and positive operator valued measures enter the postulates defining these models in this paper we show why and how the hilbertspace operator formalism which standard quantum mechanics postulates can be derived from the fundamental evolution equation of dynamical reduction models far from having any special ontological meaning we show that within the dynamical reduction context the operator formalism is just a compact and convenient way to express the statistical properties of the outcomes of experiments | [['unlike', 'standard', 'quantum', 'mechanics', 'dynamical', 'reduction', 'models', 'assign', 'no', 'particular', 'a', 'priori', 'status', 'to', 'measurement', 'processes', 'apparata', 'and', 'observables', 'nor', 'selfadjoint', 'operators', 'and', 'positive', 'operator', 'valued', 'measures', 'enter', 'the', 'postulates', 'defining', 'these', 'models', 'in', 'this', 'paper', 'we', 'show', 'why', 'and', 'how', 'the', 'hilbertspace', 'operator', 'formalism', 'which', 'standard', 'quantum', 'mechanics', 'postulates', 'can', 'be', 'derived', 'from', 'the', 'fundamental', 'evolution', 'equation', 'of', 'dynamical', 'reduction', 'models', 'far', 'from', 'having', 'any', 'special', 'ontological', 'meaning', 'we', 'show', 'that', 'within', 'the', 'dynamical', 'reduction', 'context', 'the', 'operator', 'formalism', 'is', 'just', 'a', 'compact', 'and', 'convenient', 'way', 'to', 'express', 'the', 'statistical', 'properties', 'of', 'the', 'outcomes', 'of', 'experiments']] | [-0.05030770319485173, 0.13139110481961794, -0.14656737994057, 0.12651639592056116, -0.10130187615838632, -0.14926148483352064, 0.03283474446135122, 0.2977577899918728, -0.2853293593243225, -0.2617279603001998, 0.0594335206503471, -0.2766063023735433, -0.19727406815923365, 0.14663877253679886, -0.07415449501437701, 0.0681155077997864, 0.0862097978212669, 0.06048153625013902, -0.15249635963508687, -0.15436541975101398, 0.3639926642285103, 0.023097070692510335, 0.22667678377408648, 0.019762945937511232, 0.12483739986362838, 0.031181778245096662, -0.036328453433786316, 0.01341626506668429, -0.11385921539881894, 0.09547109651672125, 0.24018741858496478, 0.19473164019741349, 0.251065133792377, -0.4361300329226501, -0.25702175197489174, 0.1619536806109179, 0.09605357610889394, 0.10342842962991293, 0.009715847870258172, -0.282145278393915, 0.02796114224594893, -0.17598078927966124, -0.14776676413651132, -0.1096645346074605, 0.015273961536202234, -0.05883930773791118, -0.23339977572412834, 0.0967334996063992, 0.09620912770348236, 0.06000389079995377, -0.08097021141540758, -0.07782666697214867, -0.004010617329148557, 0.10841723190159681, -0.01851879424396326, -0.012958229299797917, 0.16492603060107716, -0.07280584943202353, -0.18707554645778746, 0.389169840583789, -0.050209038464842155, -0.27691766299000103, 0.17024556772793, -0.16703518729215278, -0.17301883498211534, -0.005625785740101998, 0.11001751026541916, 0.11677681497200969, -0.19029556583978005, 0.13871391613718084, -0.03565747674900232, 0.16825606913147398, 0.022402006196645424, 0.09434608285454553, 0.1952981599798599, 0.0868226373832212, 0.007002314853904404, 0.039849281669882386, 0.06032632856831415, -0.20042725577086365, -0.3884523477520525, -0.16075825980648736, -0.12221436413513861, 0.10726774428231814, -0.08349728182416659, -0.1801480373425275, 0.3667945818946764, 0.20281313317011773, 0.1678269012811949, 0.04500983554279413, 0.2803475647761496, 0.20044462462723947, 0.07429689810294465, 0.030319318681782514, 0.2216040883549326, 0.1804972509709523, 0.06771003136161677, -0.17102774685325542, 0.05559392001230231, 0.08509494196239513] |
707.2941 | The BeppoSAX WFC X-ray source catalogue | We present the catalogue of X-ray sources detected by the two Wide Field
Cameras (WFCs) in complete observations on board BeppoSAX during its 6 years of
operational lifetime, between April 1996 and April 2002. The BeppoSAX WFCs were
coded mask instruments sensitive in the 2-28 keV energy band with a 40x40
square degree fields of view, pointing in opposite directions and
perpendicularly to the BeppoSAX Narrow Field Instruments (NFI). The WFCs were
usually operated simultaneously to NFI observations, each lasting up to several
days. WFCs observed thus the entire sky several times with a typical
sensitivity of 2 to 10 mCrab. A systematic analysis of all WFC observations in
the BeppoSAX archive has been carried out using the latest post-mission release
of the WFC analysis software and calibrations. The catalogue includes 253
distinct sources, obtained from a total sample of 8253 WFC detections. We
describe the basic statistical properties of the sample and present a six-year
history of two celestial calibration X-ray sources.
| astro-ph | we present the catalogue of xray sources detected by the two wide field cameras wfcs in complete observations on board bepposax during its 6 years of operational lifetime between april 1996 and april 2002 the bepposax wfcs were coded mask instruments sensitive in the 228 kev energy band with a 40x40 square degree fields of view pointing in opposite directions and perpendicularly to the bepposax narrow field instruments nfi the wfcs were usually operated simultaneously to nfi observations each lasting up to several days wfcs observed thus the entire sky several times with a typical sensitivity of 2 to 10 mcrab a systematic analysis of all wfc observations in the bepposax archive has been carried out using the latest postmission release of the wfc analysis software and calibrations the catalogue includes 253 distinct sources obtained from a total sample of 8253 wfc detections we describe the basic statistical properties of the sample and present a sixyear history of two celestial calibration xray sources | [['we', 'present', 'the', 'catalogue', 'of', 'xray', 'sources', 'detected', 'by', 'the', 'two', 'wide', 'field', 'cameras', 'wfcs', 'in', 'complete', 'observations', 'on', 'board', 'bepposax', 'during', 'its', '6', 'years', 'of', 'operational', 'lifetime', 'between', 'april', '1996', 'and', 'april', '2002', 'the', 'bepposax', 'wfcs', 'were', 'coded', 'mask', 'instruments', 'sensitive', 'in', 'the', '228', 'kev', 'energy', 'band', 'with', 'a', '40x40', 'square', 'degree', 'fields', 'of', 'view', 'pointing', 'in', 'opposite', 'directions', 'and', 'perpendicularly', 'to', 'the', 'bepposax', 'narrow', 'field', 'instruments', 'nfi', 'the', 'wfcs', 'were', 'usually', 'operated', 'simultaneously', 'to', 'nfi', 'observations', 'each', 'lasting', 'up', 'to', 'several', 'days', 'wfcs', 'observed', 'thus', 'the', 'entire', 'sky', 'several', 'times', 'with', 'a', 'typical', 'sensitivity', 'of', '2', 'to', '10', 'mcrab', 'a', 'systematic', 'analysis', 'of', 'all', 'wfc', 'observations', 'in', 'the', 'bepposax', 'archive', 'has', 'been', 'carried', 'out', 'using', 'the', 'latest', 'postmission', 'release', 'of', 'the', 'wfc', 'analysis', 'software', 'and', 'calibrations', 'the', 'catalogue', 'includes', '253', 'distinct', 'sources', 'obtained', 'from', 'a', 'total', 'sample', 'of', '8253', 'wfc', 'detections', 'we', 'describe', 'the', 'basic', 'statistical', 'properties', 'of', 'the', 'sample', 'and', 'present', 'a', 'sixyear', 'history', 'of', 'two', 'celestial', 'calibration', 'xray', 'sources']] | [-0.09929883137724742, 0.07596960499376794, -0.05727007143619114, 0.030041796612311846, -0.08766923181103244, -0.06206311574090778, 0.06572323866090794, 0.46241303951835927, -0.15487162076672653, -0.44060991108877423, 0.1396587873481352, -0.35957042450073784, -0.0075891187592742985, 0.25370767240607994, -0.04873868407369706, 0.003884916886167003, 0.11201241074983652, -0.09937155851519403, -0.05720133018064784, -0.28590761666922015, 0.17299218461158927, 0.11257200846793475, 0.23486497419754065, -0.07770045555087474, 0.12071343213406012, 0.029635943585926278, -0.1525124723298682, -0.014466716425010451, -0.12754133203135873, 0.03415241897865026, 0.26372313309593104, 0.12217623289397136, 0.21085772808227274, -0.36631937512370144, -0.18526138029460806, 0.03792387146767183, 0.06569863114517505, -0.043566427637145994, 0.026456254890136834, -0.33726582856687864, 0.001517633811202774, -0.168165412375845, -0.12736476956073334, 0.05050380954757494, 0.04462655332589085, 0.06288283376991864, -0.14910753975323413, 0.04729973511586403, -0.04293411471349199, 0.14881001886578255, -0.1450602717497846, -0.11936339204786, 0.000418320311129921, 0.12835643990080298, 0.0339160678781753, 0.08487730211776646, 0.10397065876994604, -0.09398008541261839, -0.10747352019412282, 0.31624972578396815, -0.050316559274416466, 0.07027317346706066, 0.12987309258523178, -0.17859042986054663, -0.18748215604918422, 0.21626497681804555, 0.15131276122576062, 0.0771794084051371, -0.22020814058451374, 0.0545132585857236, -0.009285465071127279, 0.25467045166541213, 0.07511413245272168, 0.026998960456155515, 0.25584517631760256, 0.09683718586507264, 0.013094339708015783, 0.13989159420282107, -0.3421794973000493, -0.027067801114574165, -0.26652879174223837, -0.0634394802791239, -0.11598535849250002, 0.09691136318149712, -0.06813206804598636, -0.08829513543902, 0.4320261851240547, 0.13958276178469353, 0.14492329672254897, -0.021378331704145687, 0.3142244253755995, 0.005549941908993563, 0.08835456175959588, 0.06484109440094067, 0.3257942870489241, 0.11435726377394419, 0.1725515779481488, -0.09714653567888165, -0.03342979265963314, -0.04423100008132701] |
707.2942 | Fermion masses, Leptogenesis and Supersymmetric SO(10) Unification | Current neutrino oscillation data indicate the existence of two large lepton
mixing angles, while Kobayashi-Maskawa matrix elements are all small. Here we
show how supersymmetric SO(10) with extra chiral singlets can easily reconcile
large lepton mixing angles with small quark mixing angles within the framework
of the successful Fritzsch ansatz. Moreover we show how this is fully
consistent with the thermal leptogenesis scenario, avoiding the so-called
gravitino problem. A sizeable asymmetry can be generated at relatively low
scales. We present our results in terms of the leptonic CP violation parameter
that characterizes neutrino oscillations.
| hep-ph | current neutrino oscillation data indicate the existence of two large lepton mixing angles while kobayashimaskawa matrix elements are all small here we show how supersymmetric so10 with extra chiral singlets can easily reconcile large lepton mixing angles with small quark mixing angles within the framework of the successful fritzsch ansatz moreover we show how this is fully consistent with the thermal leptogenesis scenario avoiding the socalled gravitino problem a sizeable asymmetry can be generated at relatively low scales we present our results in terms of the leptonic cp violation parameter that characterizes neutrino oscillations | [['current', 'neutrino', 'oscillation', 'data', 'indicate', 'the', 'existence', 'of', 'two', 'large', 'lepton', 'mixing', 'angles', 'while', 'kobayashimaskawa', 'matrix', 'elements', 'are', 'all', 'small', 'here', 'we', 'show', 'how', 'supersymmetric', 'so10', 'with', 'extra', 'chiral', 'singlets', 'can', 'easily', 'reconcile', 'large', 'lepton', 'mixing', 'angles', 'with', 'small', 'quark', 'mixing', 'angles', 'within', 'the', 'framework', 'of', 'the', 'successful', 'fritzsch', 'ansatz', 'moreover', 'we', 'show', 'how', 'this', 'is', 'fully', 'consistent', 'with', 'the', 'thermal', 'leptogenesis', 'scenario', 'avoiding', 'the', 'socalled', 'gravitino', 'problem', 'a', 'sizeable', 'asymmetry', 'can', 'be', 'generated', 'at', 'relatively', 'low', 'scales', 'we', 'present', 'our', 'results', 'in', 'terms', 'of', 'the', 'leptonic', 'cp', 'violation', 'parameter', 'that', 'characterizes', 'neutrino', 'oscillations']] | [-0.14830831485364507, 0.3637133501309089, 0.0068700750249418175, 0.159855356885794, -0.0933300357663687, -0.16682416688096016, 0.05327634766767238, 0.30998457118155476, -0.25403390081718247, -0.302507296029944, 0.046821633151960265, -0.24082640518355083, -0.06661424613087141, 0.09480430373050114, 0.016857759177466815, 0.030710777970020996, 0.09139882144022812, -0.10034127007833028, -0.11878574519428088, -0.1918507711850404, 0.2849759868187632, 0.007277446281303592, 0.2464155055275385, 0.09169002557222909, 0.07448727208712297, -0.09386521634804283, -0.014756644332900326, -0.038851596940150286, -0.05743777714699118, 0.031005463673128807, 0.19729382586058605, 0.10202390954215476, 0.0590792056272163, -0.4046994444339516, -0.1626284196056386, 0.18766783834236891, 0.16743192085104577, 0.14985583936845132, -0.09140292440164596, -0.2839883737503848, 0.09362818477576242, -0.2391070347091064, -0.14471089798323017, -0.13077863444762422, -0.07801638944371742, -0.12027662141964414, -0.3676517952748753, 0.1322799645602069, -0.07800299571232593, -0.029465428053183442, 0.056865593378848216, -0.1705650028529914, -0.02911558651930078, 0.036406270272910914, 0.19973013905481377, -0.07501918445044059, 0.08794980507561977, -0.11671953098204463, -0.10364948047146677, 0.4153341299834404, -0.09577210834547084, -0.18617473871625484, 0.0961691423547157, -0.23461361510302634, -0.16752356634118615, 0.12000441225988671, 0.13517845294220335, 0.08244694187058176, -0.14049589522975556, 0.1449667982874126, -0.15633015349467702, 0.15655138287718032, 0.04844629631546187, 0.03430494708702602, 0.2720809455445789, 0.2127652324716303, 0.07972354624678005, 0.013455901533969618, -0.08508985594132955, -0.07066998696648219, -0.43029871804917114, -0.055456962941729644, -0.10749111183983412, 0.054124415824883323, -0.1456372856875842, -0.08929087517366922, 0.4418959274115239, 0.15438062092289329, 0.2569673190963395, 0.05188424686623856, 0.3072811797201792, 0.05420917137451668, 0.09701829688980225, 0.03874878510783248, 0.3155482170132405, 0.137344036806137, 0.1040989077734226, -0.3071329231235258, 0.06465908933054418, 0.03938618289465283] |
707.2943 | Diffusive and ballistic current spin-polarization in magnetron-sputtered
L1o-ordered epitaxial FePt | We report on the structural, magnetic, and electron transport properties of a
L1o-ordered epitaxial iron-platinum alloy layer fabricated by
magnetron-sputtering on a MgO(001) substrate. The film studied displayed a long
range chemical order parameter of S~0.90, and hence has a very strong
perpendicular magnetic anisotropy. In the diffusive electron transport regime,
for temperatures ranging from 2 K to 258 K, we found hysteresis in the
magnetoresistance mainly due to electron scattering from magnetic domain walls.
At 2 K, we observed an overall domain wall magnetoresistance of about 0.5 %. By
evaluating the spin current asymmetry alpha = sigma_up / sigma_down, we were
able to estimate the diffusive spin current polarization. At all temperatures
ranging from 2 K to 258 K, we found a diffusive spin current polarization of >
80%. To study the ballistic transport regime, we have performed point-contact
Andreev-reflection measurements at 4.2 K. We obtained a value for the ballistic
current spin polarization of ~42% (which compares very well with that of a
polycrystalline thin film of elemental Fe). We attribute the discrepancy to a
difference in the characteristic scattering times for oppositely spin-polarized
electrons, such scattering times influencing the diffusive but not the
ballistic current spin polarization.
| cond-mat.mtrl-sci | we report on the structural magnetic and electron transport properties of a l1oordered epitaxial ironplatinum alloy layer fabricated by magnetronsputtering on a mgo001 substrate the film studied displayed a long range chemical order parameter of s090 and hence has a very strong perpendicular magnetic anisotropy in the diffusive electron transport regime for temperatures ranging from 2 k to 258 k we found hysteresis in the magnetoresistance mainly due to electron scattering from magnetic domain walls at 2 k we observed an overall domain wall magnetoresistance of about 05 by evaluating the spin current asymmetry alpha sigma_up sigma_down we were able to estimate the diffusive spin current polarization at all temperatures ranging from 2 k to 258 k we found a diffusive spin current polarization of 80 to study the ballistic transport regime we have performed pointcontact andreevreflection measurements at 42 k we obtained a value for the ballistic current spin polarization of 42 which compares very well with that of a polycrystalline thin film of elemental fe we attribute the discrepancy to a difference in the characteristic scattering times for oppositely spinpolarized electrons such scattering times influencing the diffusive but not the ballistic current spin polarization | [['we', 'report', 'on', 'the', 'structural', 'magnetic', 'and', 'electron', 'transport', 'properties', 'of', 'a', 'l1oordered', 'epitaxial', 'ironplatinum', 'alloy', 'layer', 'fabricated', 'by', 'magnetronsputtering', 'on', 'a', 'mgo001', 'substrate', 'the', 'film', 'studied', 'displayed', 'a', 'long', 'range', 'chemical', 'order', 'parameter', 'of', 's090', 'and', 'hence', 'has', 'a', 'very', 'strong', 'perpendicular', 'magnetic', 'anisotropy', 'in', 'the', 'diffusive', 'electron', 'transport', 'regime', 'for', 'temperatures', 'ranging', 'from', '2', 'k', 'to', '258', 'k', 'we', 'found', 'hysteresis', 'in', 'the', 'magnetoresistance', 'mainly', 'due', 'to', 'electron', 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'scattering', 'times', 'for', 'oppositely', 'spinpolarized', 'electrons', 'such', 'scattering', 'times', 'influencing', 'the', 'diffusive', 'but', 'not', 'the', 'ballistic', 'current', 'spin', 'polarization']] | [-0.15501614986593873, 0.20303693111365342, -0.01908939643423461, -0.015175451340231424, -0.014853818055901987, -0.12171878058870789, 0.08327409200865077, 0.41359697829951375, -0.2812500539099953, -0.3348236774036195, 0.0006651944428692028, -0.3209540156870692, -0.02459382820143219, 0.21398081277826955, 0.08502820797487705, 0.008571308212898051, -0.0453523146649483, -0.04736102441953941, -0.08707779582740234, -0.17822104190054233, 0.2437116515005376, 0.012702044808368859, 0.29343153761389357, 0.10562076664549143, 0.08530533414887032, -0.009832481950676689, 0.07631906771227175, 0.064564519765554, -0.17981617720196633, 0.0024466090344503755, 0.2445488204806073, -0.14240573930192113, 0.13650780456373468, -0.45498250701893994, -0.1954362737642441, -0.000883288366215614, 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-0.18877743942175584, 0.16313674550603233, -0.09257809351872008, -0.14894584702172628, 0.3953153494779447, 0.17934942502324702, 0.1970101097394945, -0.020576758800719592, 0.24704513227758676, 0.08359923986851452, 0.038258143456914695, 0.06648419365471152, 0.25012348297362524, 0.20211308910196144, 0.18140692031382363, -0.2973952276042837, 0.0943492015794618, -0.056152821683402486] |
707.2944 | Measuring gluon shadowing with prompt photons at RHIC and LHC | The possibility to observe the nuclear modification of the gluon distribution
at small-x (gluon shadowing) using high-p_T prompt photon production at RHIC
and at LHC is discussed. The per-nucleon ratio, sigma(p+A -> gamma+X) / A
sigma(p+p -> gamma+X), is computed for both inclusive and isolated prompt
photons in perturbative QCD at NLO using different parametrizations of nuclear
parton densities, in order to assess the visibility of the shadowing signal.
The production of isolated photons turns out to be a promising channel which
allows for a reliable extraction of the gluon density, G^A/G^p, and the
structure function, F_2^A/F_2^p, in a nucleus over that in a proton. Moreover,
the production ratio of prompt photons at forward-over-backward rapidity in p-A
collisions provides an estimate of G^A/G^p (at small x) over F_2^A/F_2^p (at
large x), without the need of p-p reference data at the same energy.
| hep-ph | the possibility to observe the nuclear modification of the gluon distribution at smallx gluon shadowing using highp_t prompt photon production at rhic and at lhc is discussed the pernucleon ratio sigmapa gammax a sigmapp gammax is computed for both inclusive and isolated prompt photons in perturbative qcd at nlo using different parametrizations of nuclear parton densities in order to assess the visibility of the shadowing signal the production of isolated photons turns out to be a promising channel which allows for a reliable extraction of the gluon density gagp and the structure function f_2af_2p in a nucleus over that in a proton moreover the production ratio of prompt photons at forwardoverbackward rapidity in pa collisions provides an estimate of gagp at small x over f_2af_2p at large x without the need of pp reference data at the same energy | [['the', 'possibility', 'to', 'observe', 'the', 'nuclear', 'modification', 'of', 'the', 'gluon', 'distribution', 'at', 'smallx', 'gluon', 'shadowing', 'using', 'highp_t', 'prompt', 'photon', 'production', 'at', 'rhic', 'and', 'at', 'lhc', 'is', 'discussed', 'the', 'pernucleon', 'ratio', 'sigmapa', 'gammax', 'a', 'sigmapp', 'gammax', 'is', 'computed', 'for', 'both', 'inclusive', 'and', 'isolated', 'prompt', 'photons', 'in', 'perturbative', 'qcd', 'at', 'nlo', 'using', 'different', 'parametrizations', 'of', 'nuclear', 'parton', 'densities', 'in', 'order', 'to', 'assess', 'the', 'visibility', 'of', 'the', 'shadowing', 'signal', 'the', 'production', 'of', 'isolated', 'photons', 'turns', 'out', 'to', 'be', 'a', 'promising', 'channel', 'which', 'allows', 'for', 'a', 'reliable', 'extraction', 'of', 'the', 'gluon', 'density', 'gagp', 'and', 'the', 'structure', 'function', 'f_2af_2p', 'in', 'a', 'nucleus', 'over', 'that', 'in', 'a', 'proton', 'moreover', 'the', 'production', 'ratio', 'of', 'prompt', 'photons', 'at', 'forwardoverbackward', 'rapidity', 'in', 'pa', 'collisions', 'provides', 'an', 'estimate', 'of', 'gagp', 'at', 'small', 'x', 'over', 'f_2af_2p', 'at', 'large', 'x', 'without', 'the', 'need', 'of', 'pp', 'reference', 'data', 'at', 'the', 'same', 'energy']] | [-0.03827345118926907, 0.17238237206593449, -0.17868244087806454, 0.1405454798114348, 0.03380667938057471, -0.057665553321216804, 0.012284123323236902, 0.376607148423446, -0.21067849935411856, -0.22167564691561792, -0.05633612885053649, -0.3530161624585701, 0.12996114699506303, 0.13097638068030829, 0.07147574331611395, 0.08909587083315408, 0.07368808019975269, 0.012366286334064272, -0.06554853708172838, -0.17923678537761722, 0.31845864303651505, 0.10381410021196913, 0.24507730376941186, 0.20182062776988863, 0.11905565179487759, 0.09429142574469249, -0.043417517937875044, -0.06752899164954822, -0.09646373663245295, 0.041245129054489856, 0.2838026056652544, 0.03875301240908879, 0.14501340922692585, -0.3434001312211708, -0.11740384489573814, 0.12086851382973017, 0.14424360872039366, 0.057675094134174286, -0.019207430096274174, -0.21711732515444357, 0.12353965659384374, -0.24105142644710012, -0.14557367779176544, -0.03369970309237639, 0.008079363736841413, -0.00994616579954271, -0.3463073018994355, 0.09335297069305347, -0.07987506769045635, -0.004141361675121718, 0.037188818900311296, -0.1631377990392071, -0.08336200583036299, 0.031155799536241424, 0.07988416482349513, 0.14558404012479717, 0.17547216788969106, -0.20880964086089215, -0.1366216902034702, 0.3757660778032409, -0.02615159192312233, -0.1327703945623297, 0.13642668065019986, -0.25018802919873484, -0.15356437711355586, 0.2374599245256158, 0.2515053423673466, 0.09235237218025658, -0.18286468312187396, 0.054825412829113365, 0.019054992668572125, 0.16520496341572316, 0.11132837947527016, 0.0892909523285063, 0.18384755576650302, 0.1974641942350125, -0.005370546663524928, 0.09319166376134726, -0.14965501460764144, -0.041705588278947055, -0.42348969832614614, -0.0919318198847274, -0.11644793887346706, 0.09237854220835423, -0.12068919134466409, -0.05793996813396613, 0.3624070859272723, 0.06237938667268113, 0.26127021243985465, -0.012654193424343787, 0.3449148505029303, 0.11205527612387582, 0.060771351714653, 0.0904979520684315, 0.2847044079254071, 0.15534119020492115, 0.1569842558060945, -0.24470240587575567, 0.07082280138404005, 0.01188417189858026] |
707.2945 | Quantum critical scaling in graphene | We show that the emergent relativistic symmetry of electrons in graphene near
its quantum critical point (QCP) implies a crucial importance of the Coulomb
interaction. We derive scaling laws, valid near the QCP, that dictate the
nontrivial magnetic and charge response of interacting graphene. Our analysis
yields numerous predictions for how the Coulomb interaction will be manifested
in experimental observables such as the diamagnetic response and electronic
compressibility.
| cond-mat.mes-hall | we show that the emergent relativistic symmetry of electrons in graphene near its quantum critical point qcp implies a crucial importance of the coulomb interaction we derive scaling laws valid near the qcp that dictate the nontrivial magnetic and charge response of interacting graphene our analysis yields numerous predictions for how the coulomb interaction will be manifested in experimental observables such as the diamagnetic response and electronic compressibility | [['we', 'show', 'that', 'the', 'emergent', 'relativistic', 'symmetry', 'of', 'electrons', 'in', 'graphene', 'near', 'its', 'quantum', 'critical', 'point', 'qcp', 'implies', 'a', 'crucial', 'importance', 'of', 'the', 'coulomb', 'interaction', 'we', 'derive', 'scaling', 'laws', 'valid', 'near', 'the', 'qcp', 'that', 'dictate', 'the', 'nontrivial', 'magnetic', 'and', 'charge', 'response', 'of', 'interacting', 'graphene', 'our', 'analysis', 'yields', 'numerous', 'predictions', 'for', 'how', 'the', 'coulomb', 'interaction', 'will', 'be', 'manifested', 'in', 'experimental', 'observables', 'such', 'as', 'the', 'diamagnetic', 'response', 'and', 'electronic', 'compressibility']] | [-0.1946524583720876, 0.20333079578738442, -0.09358707881149124, 0.0894557503189015, 0.005880309871452696, -0.15767487843849642, 0.06328728319460745, 0.3111607004230952, -0.25127612725105686, -0.2490016853929881, -0.0448956906911917, -0.33881962271955085, -0.19379528947448468, 0.1822900684475077, 0.05816355661954731, 0.04857875195739325, -0.010996300425818738, 0.006933301413322196, -0.09212560998960673, -0.13246815610567436, 0.2957205105408588, 0.06294163230375167, 0.3215884583324249, 0.1713842692963012, 0.023182573105099007, 0.05471982937032247, 0.08758823864970028, 0.0641052861328182, -0.1189359588052492, 0.020770728095051122, 0.24755772214848548, -0.0732062769067638, 0.20789966598728343, -0.4609650867059827, -0.18186696372268832, 0.03190654628526639, 0.17017530078266965, 0.13948513175744345, -0.10901926786584012, -0.26725358582403075, 0.005471315666321008, -0.14028148254489198, -0.2049776719102417, -0.1466749808340169, -0.013951266033794074, 0.026228261632187402, -0.24581142477708293, 0.13401323841090368, 0.07657456078895312, 0.0721154664095272, -0.10439324277103879, -0.07749894188086995, -0.056359553528155255, 0.12223406668807216, 0.07253235069733552, 0.036330971113570476, 0.23441830598098665, -0.18236258400686303, -0.10442881561432253, 0.42380073661094203, -0.003760837245328516, -0.10706032122320988, 0.18469753423157861, -0.20642958117155907, -0.11823681465295308, 0.1263395268470049, 0.11922216380480677, 0.036394000313628244, -0.11492143533028223, 0.105697491848225, -0.008465605717741282, 0.12109923482100438, -0.011912598480086993, 0.12186201087966123, 0.29010812812210884, 0.15820990738404148, 0.03822215516394114, 0.11156696263146039, -0.08857118612264886, -0.10305630905991968, -0.34287480768911976, -0.16014417301973, -0.2286991950001239, 0.11199864852139452, -0.12455445989540107, -0.18689200649147525, 0.3935396943407421, 0.24364359983626535, 0.14911991999586943, -0.056976117467617285, 0.20721849218449173, 0.15834468510686694, 0.04482240602374077, 0.05800030262017732, 0.3297843890956274, 0.1323803472058738, 0.10540274642270935, -0.33154394726871567, 0.03868948537445463, 0.04706385734093869] |
707.2946 | Fast Single-Charge Sensing with an rf Quantum Point Contact | We report high-bandwidth charge sensing measurements using a GaAs quantum
point contact embedded in a radio frequency impedance matching circuit
(rf-QPC). With the rf-QPC biased near pinch-off where it is most sensitive to
charge, we demonstrate a conductance sensitivity of 5x10^(-6) e^(2)/h Hz^(-1/2)
with a bandwidth of 8 MHz. Single-shot readout of a proximal few-electron
double quantum dot is investigated in a mode where the rf-QPC back-action is
rapidly switched.
| cond-mat.mes-hall | we report highbandwidth charge sensing measurements using a gaas quantum point contact embedded in a radio frequency impedance matching circuit rfqpc with the rfqpc biased near pinchoff where it is most sensitive to charge we demonstrate a conductance sensitivity of 5x106 e2h hz12 with a bandwidth of 8 mhz singleshot readout of a proximal fewelectron double quantum dot is investigated in a mode where the rfqpc backaction is rapidly switched | [['we', 'report', 'highbandwidth', 'charge', 'sensing', 'measurements', 'using', 'a', 'gaas', 'quantum', 'point', 'contact', 'embedded', 'in', 'a', 'radio', 'frequency', 'impedance', 'matching', 'circuit', 'rfqpc', 'with', 'the', 'rfqpc', 'biased', 'near', 'pinchoff', 'where', 'it', 'is', 'most', 'sensitive', 'to', 'charge', 'we', 'demonstrate', 'a', 'conductance', 'sensitivity', 'of', '5x106', 'e2h', 'hz12', 'with', 'a', 'bandwidth', 'of', '8', 'mhz', 'singleshot', 'readout', 'of', 'a', 'proximal', 'fewelectron', 'double', 'quantum', 'dot', 'is', 'investigated', 'in', 'a', 'mode', 'where', 'the', 'rfqpc', 'backaction', 'is', 'rapidly', 'switched']] | [-0.211043759342283, 0.18167637581271784, 0.026910748372652702, -0.0943235956681227, 0.01581539282841342, -0.2714247211381527, 0.12032545960308717, 0.4108608467504382, -0.21047806004561218, -0.2514357788222177, 0.059904964702478275, -0.29504786245524883, -0.10986457141116261, 0.2501137231277036, -0.05697591790397252, 0.0696922079344014, 0.05197391185377325, -0.0018996825641287224, -0.06820233030843416, -0.10388385970145464, 0.16212675061209925, 0.06246346276186939, 0.2945712802266436, 0.06487905192188918, 0.11141752169267939, -0.012028552904458983, 0.08661008823130811, 0.004414905487958874, -0.10020814815403095, 0.020459464019430534, 0.32229090440419633, -0.07139603649931295, 0.23658065619279764, -0.4180045600581382, -0.12496900742075273, 0.028061439296496765, 0.12046792568040214, 0.1196584839373827, -0.09705224839438285, -0.27940245385148693, 0.09280906540474722, -0.1662497191024678, -0.06204431394913367, 0.023062424814062458, -0.023112291616520713, -0.006151456545506205, -0.2823369024521006, 0.09141227014894997, -0.027153723307752183, 0.03583138950967363, 0.03634649013235633, -0.04625606373883784, 0.046398755093105135, 0.04100602553891284, -0.14226127460133284, 0.07391544472692269, 0.32390222697119625, -0.10376037852173405, -0.14190344358129162, 0.27891262562147207, -0.06076698996392744, -0.13470079905486532, 0.09105199172294566, -0.22746059862630708, -0.055958739229078805, 0.15775836924357073, 0.08543375133802848, 0.09494516532868147, -0.15993639662296377, 0.07846664978756702, 0.07516093956572668, 0.2719989158233927, 0.10229537499004177, 0.1155801960932357, 0.22338560276465225, 0.2701128592714667, 0.12249160464853048, 0.15848004509628352, -0.22783797327429056, -0.03406938702932426, -0.2422066992148757, -0.1461370919698051, -0.23331980290282184, 0.18638498965384706, -0.050601573714188164, -0.16681015667771654, 0.4060734484876905, 0.12111304776377178, 0.16841161338213298, -0.014811769901176117, 0.3667007661823716, 0.17085710695911466, 0.09190380492114596, 0.04719955313817731, 0.2608655496833048, 0.2360816657010998, 0.11588781905094428, -0.29245575091003306, -0.05872044199745038, -0.05870000507815608] |
707.2947 | Discrete surface growth process as a synchronization mechanism for scale
free complex networks | We consider the discrete surface growth process with relaxation to the
minimum [F. Family, J. Phys. A {\bf 19} L441, (1986).] as a possible
synchronization mechanism on scale-free networks, characterized by a degree
distribution $P(k) \sim k^{-\lambda}$, where $k$ is the degree of a node and
$\lambda$ his broadness, and compare it with the usually applied
Edward-Wilkinson process [S. F. Edwards and D. R. Wilkinson, Proc. R. Soc.
London Ser. A {\bf 381},17 (1982) ]. In spite of both processes belong to the
same universality class for Euclidean lattices, in this work we demonstrate
that for scale-free networks with exponents $\lambda<3$ this is not true.
Moreover, we show that for these ubiquitous cases the Edward-Wilkinson process
enhances spontaneously the synchronization when the system size is increased,
which is a non-physical result. Contrarily, the discrete surface growth process
do not present this flaw and is applicable for every $\lambda$.
| cond-mat.stat-mech | we consider the discrete surface growth process with relaxation to the minimum f family j phys a bf 19 l441 1986 as a possible synchronization mechanism on scalefree networks characterized by a degree distribution pk sim klambda where k is the degree of a node and lambda his broadness and compare it with the usually applied edwardwilkinson process s f edwards and d r wilkinson proc r soc london ser a bf 38117 1982 in spite of both processes belong to the same universality class for euclidean lattices in this work we demonstrate that for scalefree networks with exponents lambda3 this is not true moreover we show that for these ubiquitous cases the edwardwilkinson process enhances spontaneously the synchronization when the system size is increased which is a nonphysical result contrarily the discrete surface growth process do not present this flaw and is applicable for every lambda | [['we', 'consider', 'the', 'discrete', 'surface', 'growth', 'process', 'with', 'relaxation', 'to', 'the', 'minimum', 'f', 'family', 'j', 'phys', 'a', 'bf', '19', 'l441', '1986', 'as', 'a', 'possible', 'synchronization', 'mechanism', 'on', 'scalefree', 'networks', 'characterized', 'by', 'a', 'degree', 'distribution', 'pk', 'sim', 'klambda', 'where', 'k', 'is', 'the', 'degree', 'of', 'a', 'node', 'and', 'lambda', 'his', 'broadness', 'and', 'compare', 'it', 'with', 'the', 'usually', 'applied', 'edwardwilkinson', 'process', 's', 'f', 'edwards', 'and', 'd', 'r', 'wilkinson', 'proc', 'r', 'soc', 'london', 'ser', 'a', 'bf', '38117', '1982', 'in', 'spite', 'of', 'both', 'processes', 'belong', 'to', 'the', 'same', 'universality', 'class', 'for', 'euclidean', 'lattices', 'in', 'this', 'work', 'we', 'demonstrate', 'that', 'for', 'scalefree', 'networks', 'with', 'exponents', 'lambda3', 'this', 'is', 'not', 'true', 'moreover', 'we', 'show', 'that', 'for', 'these', 'ubiquitous', 'cases', 'the', 'edwardwilkinson', 'process', 'enhances', 'spontaneously', 'the', 'synchronization', 'when', 'the', 'system', 'size', 'is', 'increased', 'which', 'is', 'a', 'nonphysical', 'result', 'contrarily', 'the', 'discrete', 'surface', 'growth', 'process', 'do', 'not', 'present', 'this', 'flaw', 'and', 'is', 'applicable', 'for', 'every', 'lambda']] | [-0.1477578566122596, 0.12330764071531083, -0.03933763491988106, 0.009191306484378763, -0.045532251156432786, -0.16919091351534407, 0.058167251506310004, 0.3275501453493122, -0.25355252720517657, -0.2448516443677961, 0.04592836874039614, -0.2554256948451065, -0.191942767571811, 0.14810389203532942, -0.05667349084181558, 0.013326749358683417, 0.002760356830350085, 0.012070834979555276, 0.019032583887328407, -0.2719747950785398, 0.2654177545528374, 0.045338442928655305, 0.2894657958127089, 0.03908611304279774, 0.04000704273205148, 0.01915946763091759, 0.02235426701452226, 0.0046366027147386165, -0.18647847210157947, 0.06129102923744677, 0.22160426842380468, 0.08126271537454059, 0.2513581758288488, -0.3244063529807497, -0.238466138249799, 0.1629879962164934, 0.10170440552501034, 0.07767456969842697, 0.050031043821148424, -0.24872822839645542, 0.12365666138524929, -0.15378772881865177, -0.13058282146294128, -0.03483788143805139, 0.15334923523765262, 0.018977689417238566, -0.3178364880110316, 0.10540496201369248, 0.13155127703913883, 0.09012545726887167, 0.017264937219283325, -0.11734909483802518, -0.04649325584823725, 0.04332681462006829, 0.00025205011798502645, 0.09752889039243687, 0.0698655777166706, -0.08197109891605653, -0.10389354275794674, 0.3735905503850169, -0.05579406155547612, -0.1549463783620461, 0.19873406509677433, -0.14635337120056, -0.14336955949204833, 0.11242548173312608, 0.14723883455695763, 0.10836796816406542, -0.1100161983493009, 0.1747835204084978, -0.04813083422996984, 0.17204672643876545, 0.08741408669507794, -0.017529125468907496, 0.13129022690046527, 0.11801808467932198, 0.045996882739853216, 0.1039683837539274, -0.0699591797151386, -0.08705618327255488, -0.30986587414900735, -0.13647481767231062, -0.2458445686234595, 0.10088162449182948, -0.07550402792539027, -0.1300982024571667, 0.3554622359599357, 0.11804524740229731, 0.22278608439796388, 0.07989704834810803, 0.14515836172009985, 0.10297430883247839, 0.03100952316611393, 0.1543575935735533, 0.19773576579579752, 0.12375883586634563, 0.12017236163916245, -0.1898085628046131, 0.07220312501686586, 0.0397722135387259] |
707.2948 | Electron-electron interaction and charging effects in graphene quantum
dots | We analyze charging effects in graphene quantum dots. Using a simple model,
we show that, when the Fermi level is far from the neutrality point, charging
effects lead to a shift in the electrostatic potential and the dot shows
standard Coulomb blockade features. Near the neutrality point, surface states
are partially occupied and the Coulomb interaction leads to a strongly
correlated ground state which can be approximated by either a Wigner crystal or
a Laughlin like wave function. The existence of strong correlations modify the
transport properties which show non equilibrium effects, similar to those
predicted for tunneling into other strongly correlated systems.
| cond-mat.mes-hall cond-mat.str-el | we analyze charging effects in graphene quantum dots using a simple model we show that when the fermi level is far from the neutrality point charging effects lead to a shift in the electrostatic potential and the dot shows standard coulomb blockade features near the neutrality point surface states are partially occupied and the coulomb interaction leads to a strongly correlated ground state which can be approximated by either a wigner crystal or a laughlin like wave function the existence of strong correlations modify the transport properties which show non equilibrium effects similar to those predicted for tunneling into other strongly correlated systems | [['we', 'analyze', 'charging', 'effects', 'in', 'graphene', 'quantum', 'dots', 'using', 'a', 'simple', 'model', 'we', 'show', 'that', 'when', 'the', 'fermi', 'level', 'is', 'far', 'from', 'the', 'neutrality', 'point', 'charging', 'effects', 'lead', 'to', 'a', 'shift', 'in', 'the', 'electrostatic', 'potential', 'and', 'the', 'dot', 'shows', 'standard', 'coulomb', 'blockade', 'features', 'near', 'the', 'neutrality', 'point', 'surface', 'states', 'are', 'partially', 'occupied', 'and', 'the', 'coulomb', 'interaction', 'leads', 'to', 'a', 'strongly', 'correlated', 'ground', 'state', 'which', 'can', 'be', 'approximated', 'by', 'either', 'a', 'wigner', 'crystal', 'or', 'a', 'laughlin', 'like', 'wave', 'function', 'the', 'existence', 'of', 'strong', 'correlations', 'modify', 'the', 'transport', 'properties', 'which', 'show', 'non', 'equilibrium', 'effects', 'similar', 'to', 'those', 'predicted', 'for', 'tunneling', 'into', 'other', 'strongly', 'correlated', 'systems']] | [-0.13866160768400698, 0.19305152418227522, -0.11157776971429008, 0.10896631183771832, 0.021742972578102884, -0.19648196231302562, 0.09320095156938814, 0.34818646045926127, -0.308380791989779, -0.26385676417752957, -0.020337493156616405, -0.35214918798504813, -0.14090365595726784, 0.13138230535138434, 0.01866471142625635, 0.005205248950447127, 0.043559267725885926, -0.0242731287822272, -0.08723206850428822, -0.16885784289853883, 0.31623730882640605, 0.02667742140887269, 0.3042828828295313, 0.11337571453248847, 0.006600366100596572, 0.029339797460266107, 0.12550505100595719, 0.10303003440421184, -0.07355862147734529, 0.028264350939917297, 0.1946785819148238, -0.06630682635564104, 0.24929015766557994, -0.45578812339424507, -0.22639281081840468, 0.05554699072912697, 0.11719066218825654, 0.16060247231564187, -0.07446210373428117, -0.3265402063239113, 0.006226657614003397, -0.16264845099010802, -0.14311884432687488, -0.07235604684655238, -0.0457897088626056, 0.0601882936876014, -0.2615485949288077, 0.09570303099067176, 0.03764795228269276, -0.01872119590079466, -0.05971924829052635, -0.10405230515600336, -0.07250751056301508, 0.0987183985640001, -0.02173423170207014, 0.02058603564979174, 0.1997163498048553, -0.16350217377857387, -0.10317298481060029, 0.3897274266747595, -0.06660901908355865, -0.19859371156187602, 0.20527425040807395, -0.20277539257737762, -0.04462175566287151, 0.15962853859115428, 0.11419907644858981, 0.07344964849626989, -0.1557918788501552, 0.07851602047460281, -0.0017098052859774258, 0.15399949953188324, 0.02643172220932772, 0.0839458339106183, 0.2867896807542776, 0.12311690951046507, 0.09750707141910363, 0.1312445836199348, -0.1070283812479776, -0.12995971295331576, -0.2603125823842524, -0.11258967348274965, -0.2030407684579383, 0.10714157594826176, 0.01477277204332177, -0.21910144212357338, 0.4022022801009459, 0.13701150513217938, 0.19258972470314034, -0.03663679127337285, 0.23783579451095277, 0.18119299123334942, 0.05127156178638773, 0.04081608666880147, 0.26991177781132386, 0.09375787956314613, 0.021944440643583397, -0.29366456597220625, 0.04574815066784475, 0.024234407599472884] |
707.2949 | Decomposability problem on branched coverings | Given a branched covering of degree d between closed surfaces, it determines
a collection of partitions of d, the branch data. In this work we show that any
branch data are realized by an indecomposable primitive branched covering on a
connected close surface N with Euler's characteristic less than or equal to 0.
This shows that decomposable and indecomposable realizations may coexist.
Moreover, we characterize the branch data of a decomposable primitive branched
covering.
| math.GT | given a branched covering of degree d between closed surfaces it determines a collection of partitions of d the branch data in this work we show that any branch data are realized by an indecomposable primitive branched covering on a connected close surface n with eulers characteristic less than or equal to 0 this shows that decomposable and indecomposable realizations may coexist moreover we characterize the branch data of a decomposable primitive branched covering | [['given', 'a', 'branched', 'covering', 'of', 'degree', 'd', 'between', 'closed', 'surfaces', 'it', 'determines', 'a', 'collection', 'of', 'partitions', 'of', 'd', 'the', 'branch', 'data', 'in', 'this', 'work', 'we', 'show', 'that', 'any', 'branch', 'data', 'are', 'realized', 'by', 'an', 'indecomposable', 'primitive', 'branched', 'covering', 'on', 'a', 'connected', 'close', 'surface', 'n', 'with', 'eulers', 'characteristic', 'less', 'than', 'or', 'equal', 'to', '0', 'this', 'shows', 'that', 'decomposable', 'and', 'indecomposable', 'realizations', 'may', 'coexist', 'moreover', 'we', 'characterize', 'the', 'branch', 'data', 'of', 'a', 'decomposable', 'primitive', 'branched', 'covering']] | [-0.21724893815966473, 0.1458623075963555, -0.06419031062742343, 0.011215494325812403, -0.07682873893252297, -0.1638329830020666, 0.0628688168158201, 0.33912524268836586, -0.30716425469978964, -0.24009729340370442, 0.07980365937770773, -0.28423699346446507, -0.15588681365369592, 0.19596432318999055, -0.10312531840660281, -0.06988587730085931, 0.06575490668969783, 0.07412475385275241, -0.061783984945331875, -0.2889136576370613, 0.36203942836790876, -0.10862113618468111, 0.21019246339848316, 0.024465714342187386, 0.1139414645275227, -0.004446966378521678, -0.015651037734052218, 0.03843658985066656, -0.20709721558523597, 0.1284429161759043, 0.29953495574473227, 0.10302899228534787, 0.1498831224508231, -0.36507559638168363, -0.16054277679555723, 0.2242315574674993, 0.18215482790853726, -0.012783663397705232, 0.01648270833224209, -0.15042011059719967, 0.08605139459659522, -0.13063302518335027, -0.17136697280472396, -0.019984588643686997, 0.08174124225420323, -0.00014556340269140296, -0.21118724876007922, -0.02135487774235977, 0.0965778428394146, 0.12214172919708732, -0.017205347590198792, -0.1504444624045612, -0.10302116385837262, 0.102142338537158, -0.05355940411823827, 0.04210804703620237, 0.03897816809901112, -0.11738955402255964, -0.08271592813921538, 0.3305485032536593, -0.04134409004807428, -0.21131517560019888, 0.18158431185057033, -0.15493525537611866, -0.13751847621028288, 0.23586494991606152, 0.11401851320437886, 0.16409561641803766, -0.05451255660453761, 0.11521694673826238, -0.12773441255243645, 0.1484693418401671, 0.13754460798903695, -0.0306228426712993, 0.19488662249735883, 0.171890089061816, 0.08782621872661686, 0.16685702353651002, -0.03435785670424937, -0.03897225812731965, -0.3318174213699594, -0.1872249546876127, -0.18179851807213412, 0.14227603666950017, -0.1004268482791156, -0.2045248958999543, 0.36643462718741315, 0.020228335201249434, 0.24027310527005308, 0.11231582339953732, 0.20657763172041727, 0.011222009194662442, 0.1056973401935318, 0.10344293363694404, 0.11784529241393446, 0.14607182704226895, -0.06591225981183753, -0.12747922086320515, 0.025769495757649075, 0.06401355588506605] |
707.295 | Relativistic Iron K Emission and absorption in the Seyfert 1.9 galaxy
MCG-5-23-16 | We present the results of the simultaneous deep XMM and Chandra observations
of the bright Seyfert 1.9 galaxy MCG-5-23-16, which is thought to have one of
the best known examples of a relativistically broadened iron K-alpha line. The
time averaged spectral analysis shows that the iron K-shell complex is best
modeled with an unresolved narrow emission component (FWHM < 5000 km/s, EW ~ 60
eV) plus a broad component. This latter component has FWHM ~ 44000 km/s and EW
~ 50 eV. Its profile is well described by an emission line originating from an
accretion disk viewed with an inclination angle ~ 40^\circ and with the
emission arising from within a few tens of gravitational radii of the central
black hole. The time-resolved spectral analysis of the XMM EPIC-pn spectrum
shows that both the narrow and broad components of the Fe K emission line
appear to be constant in time within the errors. We detected a narrow sporadic
absorption line at 7.7 keV which appears to be variable on a time-scale of 20
ksec. If associated with Fe XXVI Ly-alpha this absorption is indicative of a
possibly variable, high ionization, high velocity outflow. The variability of
this absorption feature appears to rule out a local (z=0) origin. The analysis
of the XMM RGS spectrum reveals that the soft X-ray emission of MCG-5-23-16 is
likely dominated by several emission lines superimposed on an unabsorbed
scattered power-law continuum. The lack of strong Fe L shell emission together
with the detection of a strong forbidden line in the O VII triplet is
consistent with a scenario where the soft X-ray emission lines are produced in
a plasma photoionized by the nuclear emission.
| astro-ph | we present the results of the simultaneous deep xmm and chandra observations of the bright seyfert 19 galaxy mcg52316 which is thought to have one of the best known examples of a relativistically broadened iron kalpha line the time averaged spectral analysis shows that the iron kshell complex is best modeled with an unresolved narrow emission component fwhm 5000 kms ew 60 ev plus a broad component this latter component has fwhm 44000 kms and ew 50 ev its profile is well described by an emission line originating from an accretion disk viewed with an inclination angle 40circ and with the emission arising from within a few tens of gravitational radii of the central black hole the timeresolved spectral analysis of the xmm epicpn spectrum shows that both the narrow and broad components of the fe k emission line appear to be constant in time within the errors we detected a narrow sporadic absorption line at 77 kev which appears to be variable on a timescale of 20 ksec if associated with fe xxvi lyalpha this absorption is indicative of a possibly variable high ionization high velocity outflow the variability of this absorption feature appears to rule out a local z0 origin the analysis of the xmm rgs spectrum reveals that the soft xray emission of mcg52316 is likely dominated by several emission lines superimposed on an unabsorbed scattered powerlaw continuum the lack of strong fe l shell emission together with the detection of a strong forbidden line in the o vii triplet is consistent with a scenario where the soft xray emission lines are produced in a plasma photoionized by the nuclear emission | [['we', 'present', 'the', 'results', 'of', 'the', 'simultaneous', 'deep', 'xmm', 'and', 'chandra', 'observations', 'of', 'the', 'bright', 'seyfert', '19', 'galaxy', 'mcg52316', 'which', 'is', 'thought', 'to', 'have', 'one', 'of', 'the', 'best', 'known', 'examples', 'of', 'a', 'relativistically', 'broadened', 'iron', 'kalpha', 'line', 'the', 'time', 'averaged', 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707.2951 | Spectacular Shells in the Host Galaxy of the QSO MC2 1635+119 | We present deep HST/ACS images and Keck spectroscopy of MC2 1635+119, a QSO
hosted by a galaxy previously classified as an undisturbed elliptical. Our new
images reveal dramatic shell structure indicative of a merger event in the
relatively recent past. The brightest shells in the central regions of the host
are distributed alternately in radius, with at least two distinct shells on one
side of the nucleus and three on the other, out to a distance of ~13 kpc. The
light within the five shells comprises ~6% of the total galaxy light. Lower
surface brightness ripples or tails and other debris extend out to a distance
of ~65 kpc. A simple N-body model for a merger reproduces the inner shell
structure and gives an estimate for the age of the merger between ~30 Myr and
~1.7 Gyr, depending on a range of reasonable assumptions. While the inner shell
structure is suggestive of a minor merger, the total light contribution from
the shells and extended structures are more indicative of a major merger. The
spectrum of the host galaxy is dominated by a population of intermediate age
(~1.4 Gyr), indicating a strong starburst episode that may have occurred at the
time of the merger event. We speculate that the current QSO activity may have
been triggered in the recent past by either a minor merger, or by debris from
an older (~Gyr) major merger that is currently ``raining'' back into the
central regions of the merger remnant.
| astro-ph | we present deep hstacs images and keck spectroscopy of mc2 1635119 a qso hosted by a galaxy previously classified as an undisturbed elliptical our new images reveal dramatic shell structure indicative of a merger event in the relatively recent past the brightest shells in the central regions of the host are distributed alternately in radius with at least two distinct shells on one side of the nucleus and three on the other out to a distance of 13 kpc the light within the five shells comprises 6 of the total galaxy light lower surface brightness ripples or tails and other debris extend out to a distance of 65 kpc a simple nbody model for a merger reproduces the inner shell structure and gives an estimate for the age of the merger between 30 myr and 17 gyr depending on a range of reasonable assumptions while the inner shell structure is suggestive of a minor merger the total light contribution from the shells and extended structures are more indicative of a major merger the spectrum of the host galaxy is dominated by a population of intermediate age 14 gyr indicating a strong starburst episode that may have occurred at the time of the merger event we speculate that the current qso activity may have been triggered in the recent past by either a minor merger or by debris from an older gyr major merger that is currently raining back into the central regions of the merger remnant | [['we', 'present', 'deep', 'hstacs', 'images', 'and', 'keck', 'spectroscopy', 'of', 'mc2', '1635119', 'a', 'qso', 'hosted', 'by', 'a', 'galaxy', 'previously', 'classified', 'as', 'an', 'undisturbed', 'elliptical', 'our', 'new', 'images', 'reveal', 'dramatic', 'shell', 'structure', 'indicative', 'of', 'a', 'merger', 'event', 'in', 'the', 'relatively', 'recent', 'past', 'the', 'brightest', 'shells', 'in', 'the', 'central', 'regions', 'of', 'the', 'host', 'are', 'distributed', 'alternately', 'in', 'radius', 'with', 'at', 'least', 'two', 'distinct', 'shells', 'on', 'one', 'side', 'of', 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707.2952 | Advanced topology on the multiscale sequence spaces S^\nu | We pursue the study of the multiscale spaces $S^\nu$ introduced by Jaffard in
the context of multifractal analysis. We give the necessary and sufficient
condition for $S^\nu$ to be locally p-convex, and exhibit a sequence of
$p$-norms that defines its natural topology. The strong topological dual of
$S^\nu$ is identified to another sequence space depending on $\nu$, endowed
with an inductive limit topology. As a particular case, we describe the dual of
a countable intersection of Besov spaces.
| math.FA math.GN math.MG | we pursue the study of the multiscale spaces snu introduced by jaffard in the context of multifractal analysis we give the necessary and sufficient condition for snu to be locally pconvex and exhibit a sequence of pnorms that defines its natural topology the strong topological dual of snu is identified to another sequence space depending on nu endowed with an inductive limit topology as a particular case we describe the dual of a countable intersection of besov spaces | [['we', 'pursue', 'the', 'study', 'of', 'the', 'multiscale', 'spaces', 'snu', 'introduced', 'by', 'jaffard', 'in', 'the', 'context', 'of', 'multifractal', 'analysis', 'we', 'give', 'the', 'necessary', 'and', 'sufficient', 'condition', 'for', 'snu', 'to', 'be', 'locally', 'pconvex', 'and', 'exhibit', 'a', 'sequence', 'of', 'pnorms', 'that', 'defines', 'its', 'natural', 'topology', 'the', 'strong', 'topological', 'dual', 'of', 'snu', 'is', 'identified', 'to', 'another', 'sequence', 'space', 'depending', 'on', 'nu', 'endowed', 'with', 'an', 'inductive', 'limit', 'topology', 'as', 'a', 'particular', 'case', 'we', 'describe', 'the', 'dual', 'of', 'a', 'countable', 'intersection', 'of', 'besov', 'spaces']] | [-0.15282580037959492, 0.12160224219928167, -0.08019384844467425, 0.13421262545923057, -0.07925132363557051, -0.09911339242870991, 0.03480526835371096, 0.3462394679395052, -0.2730146334625972, -0.19599735266409624, 0.12887450884161994, -0.20790031317096108, -0.14149384333704335, 0.18619610775838225, -0.13335614517116204, -0.004725621378150744, 0.002886160555928468, 0.0643612642485935, -0.08426765641137862, -0.21805273927449703, 0.40153959116492516, 0.008216020292960681, 0.26072223937341893, 0.029314711164587583, 0.09047467958552237, 0.0012954391467456634, -0.028537011141172394, 0.05338281559726546, -0.2071556416971688, 0.12859681389557245, 0.23660570546650353, 0.10743169800247042, 0.2623032558327302, -0.33982816878228617, -0.16451076454578492, 0.16025589373058233, 0.08467007833771789, -0.048495346489243016, -0.001391546247013582, -0.3187402138002933, 0.14013169390053895, -0.12650514915525818, -0.12634394533382967, -0.11937867140827271, 0.025267835288571242, 0.021124801834304936, -0.2943220130669383, 0.0031017295252054166, 0.13262470328332618, 0.08559650746965183, -0.08700225750157514, -0.027049934754195887, -0.0411612959459233, 0.1150811028559334, 0.004150778589507517, 0.06555864461757338, 0.06168328177255507, -0.0505806733137713, -0.12779659017299613, 0.3635438885778571, -0.0645186519727875, -0.2381213585822246, 0.1767381021561913, -0.1408618105850063, -0.17014547913239744, 0.07318218727894606, 0.14250128746752103, 0.13110233335278165, -0.06371064042338194, 0.16078770702603298, -0.08061489934483781, 0.11787471382950361, 0.048777416763373486, 0.09073275596333238, 0.13320634484243316, 0.16621261722861957, 0.13370169083086345, 0.1953554468286128, -0.04118919541808562, -0.05664237447005386, -0.35603858169932395, -0.1835911451982191, -0.19569511281159252, 0.09684183383927657, -0.0925762395860287, -0.2147867355424051, 0.37857105428926074, 0.0832889439800802, 0.20698266158787867, 0.06751563567190598, 0.16312223352575436, 0.11943985342468995, -0.007545529225936685, 0.0430830892187376, 0.16986979463866028, 0.17052045402427515, 0.0788597769330805, -0.15932820518859303, 0.000590645612623447, 0.16967101780793223] |
707.2953 | Multiwavelength Monitoring of the Unusual Ultraluminous Supernova SN
1978K in NGC 1313 and the Search for an Associated Gamma-Ray Burst | We discuss our radio (Australia Telescope Compact Array and Australian Long
Baseline Array) and X-ray (XMM-Newton) monitoring observations of the unusual
ultraluminous supernova SN 1978K in NGC 1313 at ~25 years after the explosion.
SN 1978K is a rare example of a Type IIn supernova that has remained bright
enough to have long-term X-ray and radio observations. The observations probe
the dense medium that was ejected by the progenitor star prior to its
explosion; the star might have been a Luminous Blue Variable. The radio imaging
shows that the source remains compact, but it may be marginally resolved. The
radio monitoring shows deviations from a smooth decay suggesting that
inhomogeneities are present in the radio emitting region. It appears that a
major change occurred in the mass-loss rate of the progenitor star shortly
before the supernova event. The X-ray emission between 2000 and 2006 is
consistent with the radiation coming from two shocks. All the X-ray data can be
fit using the same model (with no systematic evolution or short-term
variability) but this has a surprising requirement: the X-ray emitting regions
have a very large abundance of helium. This would be consistent with the X-ray
emitting shocks being located in a helium-rich layer that was ejected by the
progenitor star, or helium-rich material was ejected in the supernova
explosion. The unusual properties of the supernova motivated a search for an
associated gamma-ray burst (GRB). We show that SN 1978K was inside the ~4 sigma
error box of GRB 771029. If this association is correct, the GRB was
exceptionally underluminous. However, the quality of the gamma-ray burst
locations at that time was poor, and this is likely just a chance alignment.
| astro-ph | we discuss our radio australia telescope compact array and australian long baseline array and xray xmmnewton monitoring observations of the unusual ultraluminous supernova sn 1978k in ngc 1313 at 25 years after the explosion sn 1978k is a rare example of a type iin supernova that has remained bright enough to have longterm xray and radio observations the observations probe the dense medium that was ejected by the progenitor star prior to its explosion the star might have been a luminous blue variable the radio imaging shows that the source remains compact but it may be marginally resolved the radio monitoring shows deviations from a smooth decay suggesting that inhomogeneities are present in the radio emitting region it appears that a major change occurred in the massloss rate of the progenitor star shortly before the supernova event the xray emission between 2000 and 2006 is consistent with the radiation coming from two shocks all the xray data can be fit using the same model with no systematic evolution or shortterm variability but this has a surprising requirement the xray emitting regions have a very large abundance of helium this would be consistent with the xray emitting shocks being located in a heliumrich layer that was ejected by the progenitor star or heliumrich material was ejected in the supernova explosion the unusual properties of the supernova motivated a search for an associated gammaray burst grb we show that sn 1978k was inside the 4 sigma error box of grb 771029 if this association is correct the grb was exceptionally underluminous however the quality of the gammaray burst locations at that time was poor and this is likely just a chance alignment | [['we', 'discuss', 'our', 'radio', 'australia', 'telescope', 'compact', 'array', 'and', 'australian', 'long', 'baseline', 'array', 'and', 'xray', 'xmmnewton', 'monitoring', 'observations', 'of', 'the', 'unusual', 'ultraluminous', 'supernova', 'sn', '1978k', 'in', 'ngc', '1313', 'at', '25', 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'is', 'correct', 'the', 'grb', 'was', 'exceptionally', 'underluminous', 'however', 'the', 'quality', 'of', 'the', 'gammaray', 'burst', 'locations', 'at', 'that', 'time', 'was', 'poor', 'and', 'this', 'is', 'likely', 'just', 'a', 'chance', 'alignment']] | [-0.06412283844322027, 0.1194950628356101, -0.07352381932639307, 0.13150479009134636, -0.15325943146970816, -0.10737435857508344, 0.06300136184496771, 0.4851641412357062, -0.1564975756434991, -0.30496215942152194, 0.11824812601807805, -0.32434529487517627, -0.023932221440738567, 0.19784345626831837, -0.05045893012412897, -0.07811671013315459, 0.14993096339098247, -0.06499915904662569, -0.07282590252816916, -0.2718813404062008, 0.25413475579650585, 0.1364363554546336, 0.17205453189108671, -0.01797675179971856, 0.0829559945201795, -0.12700994004992816, -0.04705213995272374, -0.05704958794728642, -0.06355604912612527, 0.007341140805239585, 0.22520327033133097, 0.16696191963482662, 0.20782565706372796, -0.3730141079348702, 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707.2954 | On Randomness in Quantum Mechanics | The quantum mechanical probability densities are compared with the
probability densities treated by the theory of random variables. The relevance
of their difference for the interpretation of quantum mechanics is commented.
| quant-ph | the quantum mechanical probability densities are compared with the probability densities treated by the theory of random variables the relevance of their difference for the interpretation of quantum mechanics is commented | [['the', 'quantum', 'mechanical', 'probability', 'densities', 'are', 'compared', 'with', 'the', 'probability', 'densities', 'treated', 'by', 'the', 'theory', 'of', 'random', 'variables', 'the', 'relevance', 'of', 'their', 'difference', 'for', 'the', 'interpretation', 'of', 'quantum', 'mechanics', 'is', 'commented']] | [-0.0922079345722112, 0.2222558036746998, -0.09611961293605066, 0.0700625594172086, 0.047500967498748534, -0.09293542465855999, 0.06813947147043843, 0.3331018766808894, -0.19575405313122657, -0.2690552208692797, 0.02335383408072014, -0.276846814780466, -0.1317932769776352, 0.14036925137043, -0.07670443276724508, 0.1326508252550998, 0.00247586581615671, 0.12273548098821793, -0.08794389403755626, -0.24090356097346352, 0.275738320899226, 0.07279733606734343, 0.3078806643043795, -0.0011006206754715212, 0.08801628661251837, 0.023154170898300026, -0.0652329629707721, 0.06137805167705782, -0.10042722105619407, 0.15547023788695374, 0.24934143717250518, 0.12009545884305431, 0.2799364197999239, -0.41995695221327967, -0.27455887354670033, 0.026989577728654107, 0.002408803425609104, 0.11180715440141578, -0.013310290602666716, -0.33243115462603107, 0.030584224229378086, -0.16282815546278032, -0.16980227625237837, -0.05177562350347158, 0.02781044884074119, 0.0876836427036793, -0.17018917160889796, 0.15643326778926195, 0.03802113461818907, 0.04654920780129971, -0.015103489115473724, -0.18300683646192473, 0.0019267737985618652, 0.12625917585025873, 0.025614753827422617, -0.016810512305387566, 0.16829329693029005, -0.17953392577868316, -0.17438113310885045, 0.42911671342388275, 0.03652205702758605, -0.2635499009441945, 0.16756483244018688, -0.1225816823632246, -0.07955037719840484, 0.1114647438929927, 0.07923914215737773, 0.09104989979776644, -0.11413930831176619, 0.12032197139436199, 0.03105186320270502, 0.10984897397218212, 0.0498996005814162, 0.09987514084505458, 0.2537303817488493, 0.07507791051701192, -0.04214623813787775, 0.09932603747133285, -0.062124866271211256, -0.2526020023130601, -0.36557347988409383, -0.18420281086958223, -0.2562042487364623, 0.0986261940110595, -0.09822053094244292, -0.1397400777186117, 0.32207061254209085, 0.15568021369437057, 0.1970973220924216, 0.07680258996063663, 0.24182512791406724, 0.22736634614486848, -0.06134173280799821, -0.00885048239762264, 0.21985989352387766, 0.27687679850796776, 0.0324037772332949, -0.23107484948911494, 0.10138715399549372, 0.0643379946930274] |
707.2955 | $\mu-e$ conversion in nuclei within the CMSSM seesaw: universality
versus non-universality | In this paper we study $\mu-e$ conversion in nuclei within the context of the
Constrained Minimal Supersymmetric Standard Model, enlarged by three right
handed neutrinos and their supersymmetric partners, and where the neutrino
masses are generated via a seesaw mechanism. Two different scenarios with
either universal or non-universal soft supersymmetry breaking Higgs masses at
the gauge coupling unification scale are considered. In the first part we
present a complete one-loop computation of the conversion rate for this process
that includes the photon-, $Z$-boson, and Higgs-boson penguins, as well as box
diagrams, and compare their size in the two considered scenarios. Then, in
these two scenarios we analyse the relevance of the various parameters on the
conversion rates, particularly emphasising the role played by the heavy
neutrino masses, $\tan \beta$, and especially $\theta_{13}$. In the case of
hierachical heavy neutrinos, an extremely high sensitivity of the rates to
$\theta_{13}$ is indeed found. The last part of this work is devoted to the
study of the interesting loss of correlation between the $\mu-e$ conversion and
$\mu \to e \gamma$ rates that occurs in the non-universal scenario. In the case
of large $\tan \beta$ and light $H^0$ Higgs boson an enhanced ratio of the
$\mu-e$ to $\mu \to e \gamma$ rates, with respect to the universal case is
found, and this could be tested with the future experimental sensitivities.
| hep-ph | in this paper we study mue conversion in nuclei within the context of the constrained minimal supersymmetric standard model enlarged by three right handed neutrinos and their supersymmetric partners and where the neutrino masses are generated via a seesaw mechanism two different scenarios with either universal or nonuniversal soft supersymmetry breaking higgs masses at the gauge coupling unification scale are considered in the first part we present a complete oneloop computation of the conversion rate for this process that includes the photon zboson and higgsboson penguins as well as box diagrams and compare their size in the two considered scenarios then in these two scenarios we analyse the relevance of the various parameters on the conversion rates particularly emphasising the role played by the heavy neutrino masses tan beta and especially theta_13 in the case of hierachical heavy neutrinos an extremely high sensitivity of the rates to theta_13 is indeed found the last part of this work is devoted to the study of the interesting loss of correlation between the mue conversion and mu to e gamma rates that occurs in the nonuniversal scenario in the case of large tan beta and light h0 higgs boson an enhanced ratio of the mue to mu to e gamma rates with respect to the universal case is found and this could be tested with the future experimental sensitivities | [['in', 'this', 'paper', 'we', 'study', 'mue', 'conversion', 'in', 'nuclei', 'within', 'the', 'context', 'of', 'the', 'constrained', 'minimal', 'supersymmetric', 'standard', 'model', 'enlarged', 'by', 'three', 'right', 'handed', 'neutrinos', 'and', 'their', 'supersymmetric', 'partners', 'and', 'where', 'the', 'neutrino', 'masses', 'are', 'generated', 'via', 'a', 'seesaw', 'mechanism', 'two', 'different', 'scenarios', 'with', 'either', 'universal', 'or', 'nonuniversal', 'soft', 'supersymmetry', 'breaking', 'higgs', 'masses', 'at', 'the', 'gauge', 'coupling', 'unification', 'scale', 'are', 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'mue', 'conversion', 'and', 'mu', 'to', 'e', 'gamma', 'rates', 'that', 'occurs', 'in', 'the', 'nonuniversal', 'scenario', 'in', 'the', 'case', 'of', 'large', 'tan', 'beta', 'and', 'light', 'h0', 'higgs', 'boson', 'an', 'enhanced', 'ratio', 'of', 'the', 'mue', 'to', 'mu', 'to', 'e', 'gamma', 'rates', 'with', 'respect', 'to', 'the', 'universal', 'case', 'is', 'found', 'and', 'this', 'could', 'be', 'tested', 'with', 'the', 'future', 'experimental', 'sensitivities']] | [-0.10092658730145478, 0.23117039965960687, 0.03129903695842795, 0.1515428766150706, -0.026198290734535362, -0.1466763557349043, 0.07622791161560824, 0.34515795323676307, -0.22909784953489043, -0.2793576888056509, 0.06812098577584602, -0.2575268786033797, -0.05795099878316926, 0.18561760341929914, 0.01739925517395666, 0.04953156810756608, 0.01254651638157913, 0.0010569858142232473, -0.05592101953606393, -0.22569727176281137, 0.3135599442541319, 0.09663784720283826, 0.23030694035928598, 0.0823404208213025, 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707.2956 | Universal Control of Nuclear Spins Via Anisotropic Hyperfine
Interactions | We show that nuclear spin subsystems can be completely controlled via
microwave irradiation of resolved anisotropic hyperfine interactions with a
nearby electron spin. Such indirect addressing of the nuclear spins via
coupling to an electron allows us to create nuclear spin gates whose
operational time is significantly faster than conventional direct addressing
methods. We experimentally demonstrate the feasibility of this method on a
solid-state ensemble system consisting of one electron and one nuclear spin.
| quant-ph | we show that nuclear spin subsystems can be completely controlled via microwave irradiation of resolved anisotropic hyperfine interactions with a nearby electron spin such indirect addressing of the nuclear spins via coupling to an electron allows us to create nuclear spin gates whose operational time is significantly faster than conventional direct addressing methods we experimentally demonstrate the feasibility of this method on a solidstate ensemble system consisting of one electron and one nuclear spin | [['we', 'show', 'that', 'nuclear', 'spin', 'subsystems', 'can', 'be', 'completely', 'controlled', 'via', 'microwave', 'irradiation', 'of', 'resolved', 'anisotropic', 'hyperfine', 'interactions', 'with', 'a', 'nearby', 'electron', 'spin', 'such', 'indirect', 'addressing', 'of', 'the', 'nuclear', 'spins', 'via', 'coupling', 'to', 'an', 'electron', 'allows', 'us', 'to', 'create', 'nuclear', 'spin', 'gates', 'whose', 'operational', 'time', 'is', 'significantly', 'faster', 'than', 'conventional', 'direct', 'addressing', 'methods', 'we', 'experimentally', 'demonstrate', 'the', 'feasibility', 'of', 'this', 'method', 'on', 'a', 'solidstate', 'ensemble', 'system', 'consisting', 'of', 'one', 'electron', 'and', 'one', 'nuclear', 'spin']] | [-0.09292888168144871, 0.21544811437461003, -0.022749444008081196, 0.028909515249668748, -0.012978023295668332, -0.1784680421665512, 0.016542089956724463, 0.41686605711190683, -0.25890561643786525, -0.3040253405987814, 0.02163302871977558, -0.2522457286849621, -0.012876898276846151, 0.2600059572180947, 0.08530791394563543, 0.01774717162589769, 0.022191544827954792, -0.03600697325404129, -0.12773525766159938, -0.18326334179869877, 0.2939162893608964, 0.06587194044747062, 0.23417067925470905, 0.09009009701627735, 0.13953469761307477, 0.07092675897984992, 0.05315731416104009, 0.0009717409439208741, -0.06034698786980526, 0.1254565379318051, 0.2723763002636465, 0.02073631457657226, 0.20999657066941663, -0.5111823877118327, -0.18738012268786897, 0.09395993430469488, 0.1464934413371658, 0.20557754279139476, -0.07049738883349188, -0.2935380681694762, -0.021201228924297, -0.22649170080753597, -0.1125876824277126, -0.15689038900608146, -0.059901391470653785, -0.01027819057108482, -0.2845197671244072, 0.09181118915738487, 0.05917336730085112, 0.005259681832850785, -0.05644703848756271, -0.07158621743390639, 0.035111858235747626, 0.07352089540831544, -0.03510978539172258, 0.03354474478023681, 0.25521396362298243, -0.05828149921600581, -0.1875271286022522, 0.31903367562571894, -0.050183692822158905, -0.14920486987417414, 0.21788886577092312, -0.1788632350633978, -0.07829790905973799, 0.1118433699389366, 0.12512645905686393, 0.12609840149210916, -0.18445016752072685, 0.0274806883920777, -0.0050785677457177965, 0.2386670456947507, 0.018189463248426043, 0.09464523248449974, 0.25413133792981907, 0.21344460533126383, 0.11037744630153316, 0.11955034731402742, -0.13451130105169942, -0.068142800390519, -0.14785079157130943, -0.14239479810301517, -0.21791646106017604, 0.13518597480111025, -0.03640135051151643, -0.0821382340635299, 0.45513986632529946, 0.15437910549116093, 0.14388121025183717, -0.09528805957351988, 0.3459142801930776, 0.05967382069856457, 0.10306663496570813, 0.014916366337471315, 0.26952272625891743, 0.19150876834032102, 0.008990531063613456, -0.378864839915312, 0.030897136098025618, -0.005994479329249746] |
707.2957 | Vacuum Fluctuations Cannot Mimic a Cosmological Constant | When the vacuum fluctuation pressure is calculated directly from fundamental
principles of quantum field theory, in the same manner as vacuum fluctuation
energy density is commonly calculated, one finds it is not equal to the
negative of the vacuum fluctuation energy density. Thus, vacuum fluctuations
cannot manifest as a cosmological constant of any order.
| physics.gen-ph | when the vacuum fluctuation pressure is calculated directly from fundamental principles of quantum field theory in the same manner as vacuum fluctuation energy density is commonly calculated one finds it is not equal to the negative of the vacuum fluctuation energy density thus vacuum fluctuations cannot manifest as a cosmological constant of any order | [['when', 'the', 'vacuum', 'fluctuation', 'pressure', 'is', 'calculated', 'directly', 'from', 'fundamental', 'principles', 'of', 'quantum', 'field', 'theory', 'in', 'the', 'same', 'manner', 'as', 'vacuum', 'fluctuation', 'energy', 'density', 'is', 'commonly', 'calculated', 'one', 'finds', 'it', 'is', 'not', 'equal', 'to', 'the', 'negative', 'of', 'the', 'vacuum', 'fluctuation', 'energy', 'density', 'thus', 'vacuum', 'fluctuations', 'can', 'not', 'manifest', 'as', 'a', 'cosmological', 'constant', 'of', 'any', 'order']] | [-0.1224460353482176, 0.24421761733564465, -0.136784481104802, 0.1219483688198538, -0.024084123732014136, -0.09498577117073265, -0.026682529630224137, 0.27823907594111835, -0.2579879543998025, -0.3191599803553386, 0.053322125063277784, -0.24890057969499718, -0.06561764769933441, 0.14054536081173202, 0.005304708932949738, 0.05233736668120731, -0.06265900972383943, 0.12405443157662045, -0.06514894388912415, -0.18570530831136486, 0.3311212885193527, 0.10985429326537996, 0.35675895435904914, 0.07273357733660801, 0.08383153314617547, -0.02594870813190937, 0.04843512418499978, 0.09322255369783802, -0.12696399515420623, 0.035680082508108835, 0.2362968551079658, 0.04692440862682733, 0.26032440824942155, -0.4081167125905102, -0.25458197480236944, 0.11667720042169094, 0.08195772087201476, 0.19774848033081402, -0.0037552533840591257, -0.2065794689072804, 0.07056767859242179, -0.11184023323638195, -0.1559740168635141, -0.0925861482931809, -0.029071486950851978, -0.029922646277753467, -0.23661561828445304, 0.1554020017385483, -0.02959519468925216, -0.03710118535567414, -0.07974702649834481, -0.12056424766778946, -0.07462194263935089, 0.11422734478837811, 0.11408455710942772, 0.06961271701888605, 0.21759441879323937, -0.1383596145632592, -0.08018511642532593, 0.41387524929913605, -0.13534231829583984, -0.15606022345071488, 0.08168173533948984, -0.1889634043486281, -0.05082421453500336, 0.1485051572957838, 0.041915292970158835, 0.06588162000037052, -0.15090874787128997, 0.12582855034958232, 0.036248124539005486, 0.2101152644492686, 0.10350660334595226, 0.058600302480838515, 0.2594701527871869, 0.03822886652990498, 0.05882023159753193, 0.08799210966310718, -0.024983728406104175, -0.11766132299618964, -0.3934776037931442, -0.16366501555524088, -0.2723381060429595, 0.12808057471993378, -0.09050524121319706, -0.21714126854203641, 0.3317968096584082, 0.1138121902519329, 0.12300655226307837, -0.008684341702610255, 0.33070674619891427, 0.19186682853085751, 0.09603265685198659, 0.07666118846867573, 0.30909012671221386, 0.15637165692380883, 0.12111811673438007, -0.24169975753280926, 0.03654786367816004, 0.026086576139046386] |
707.2958 | Dynamical breaking of U(1)_{R} and supersymmetry in a metastable vacuum | We consider the metastable N=1 QCD model of Intriligator, Seiberg and Shih
(ISS), deformed by adding a baryon term to the superpotential. This simple
deformation causes the spontaneous breaking of the approximate R-symmetry of
the metastable vacuum. We then gauge the flavour SU(5)_f and identify it with
the parent gauge symmetry of the Standard Model (SM). This implements direct
mediation of supersymmetry breaking without the need for an additional
messenger sector. A reasonable choice of parameters leads to gaugino masses of
the right order. Finally, we speculate that the entire ``ISS x SM'' model
should be interpreted as a magnetic dual of an (unknown) asymptotically free
theory.
| hep-ph hep-th | we consider the metastable n1 qcd model of intriligator seiberg and shih iss deformed by adding a baryon term to the superpotential this simple deformation causes the spontaneous breaking of the approximate rsymmetry of the metastable vacuum we then gauge the flavour su5_f and identify it with the parent gauge symmetry of the standard model sm this implements direct mediation of supersymmetry breaking without the need for an additional messenger sector a reasonable choice of parameters leads to gaugino masses of the right order finally we speculate that the entire iss x sm model should be interpreted as a magnetic dual of an unknown asymptotically free theory | [['we', 'consider', 'the', 'metastable', 'n1', 'qcd', 'model', 'of', 'intriligator', 'seiberg', 'and', 'shih', 'iss', 'deformed', 'by', 'adding', 'a', 'baryon', 'term', 'to', 'the', 'superpotential', 'this', 'simple', 'deformation', 'causes', 'the', 'spontaneous', 'breaking', 'of', 'the', 'approximate', 'rsymmetry', 'of', 'the', 'metastable', 'vacuum', 'we', 'then', 'gauge', 'the', 'flavour', 'su5_f', 'and', 'identify', 'it', 'with', 'the', 'parent', 'gauge', 'symmetry', 'of', 'the', 'standard', 'model', 'sm', 'this', 'implements', 'direct', 'mediation', 'of', 'supersymmetry', 'breaking', 'without', 'the', 'need', 'for', 'an', 'additional', 'messenger', 'sector', 'a', 'reasonable', 'choice', 'of', 'parameters', 'leads', 'to', 'gaugino', 'masses', 'of', 'the', 'right', 'order', 'finally', 'we', 'speculate', 'that', 'the', 'entire', 'iss', 'x', 'sm', 'model', 'should', 'be', 'interpreted', 'as', 'a', 'magnetic', 'dual', 'of', 'an', 'unknown', 'asymptotically', 'free', 'theory']] | [-0.14030800154871959, 0.2639138506012112, -0.044374685174398965, 0.14499166929865923, -0.11614477533390219, -0.1601646737116477, 0.05830214613662014, 0.31501086485651236, -0.24095165285826572, -0.2844032376613644, 0.07009617146543877, -0.20069818214495788, -0.11327975787187242, 0.01586662138645309, -0.03460785911532716, 0.025205928401775518, -0.0599437016984975, 0.051073458256586546, -0.08835142297134295, -0.2419170174123895, 0.2790374724273482, 0.03788220996634578, 0.2363772458695578, 0.03242758152795569, 0.11893256993542584, -0.018601405864827475, 0.03013886081687403, -0.08668237803328149, -0.11550343756484063, 0.10606741756947606, 0.13852027806295258, 0.08311122663336683, 0.1294327144915203, -0.4109213402283923, -0.20352029046570919, 0.1545744133884755, 0.13379587083703504, 0.15423723423792013, -0.06343492942111004, -0.32530230925119713, 0.07655685983009566, -0.21240183728624065, -0.18772517696225066, -0.08820656395543648, -0.08602182426542607, -0.15574841074786097, -0.3518365090185741, 0.07294898371010106, -0.021298606915153423, 0.029368673396331944, -0.05813373121837119, -0.0702151809445635, -0.14979359931927524, 0.028603177302393992, 0.2217375253335977, 0.031799134521586996, 0.14394817616074468, -0.18048696749281348, -0.13654068924644785, 0.4199686533472729, -0.06885365845650909, -0.1721091251556744, 0.12778673227327295, -0.07521816864521857, -0.18885027927995598, 0.1228141442187271, 0.08501802178380906, 0.10164395457063362, -0.1427593154147408, 0.2314942855605381, -0.07363674254980343, 0.1870765455928192, 0.06002022198594685, 0.02307696464330942, 0.24681879929706174, 0.1480688626948252, 0.06212917006275845, 0.11750390934033038, -0.009278943217447344, -0.107350118453878, -0.4649558969298905, -0.11181482017251118, -0.08205370583026758, 0.08429453344721861, -0.1291489117929299, -0.13149236264761607, 0.3966267918025688, 0.14895710949170984, 0.1955048036212453, 0.026551587199616544, 0.21659961429793598, 0.07464875648004653, 0.097450562568276, -0.036274742317508976, 0.2675325807781433, 0.09835185079598131, 0.07415805720144285, -0.284947543918981, -0.08077613700989564, 0.14262498322136277] |
707.2959 | Supersymmetric Unparticle Effects on Higgs Boson Mass and Dark Matter | We propose a model that introduces a supersymmetric unparticle operator in
the minimal supersymmetric Standard Model. We analyze the lowest dimension
operator involving an unparticle. This operator behaves as a Standard Model
gauge singlet and it introduces a new parameter into the Higgs potential which
can provide an alternative way to relax the upper limit on the lightest Higgs
boson mass. This operator also introduces several unparticle interactions which
can induce a neutral Higgsino to decay into a spinor unparticle. It also
induces violation of scale invariance around the electroweak scale. It is
necessary for the scale of this violation to be larger than the lightest
supersymmetric particle mass to maintain the latter as the usual weakly
interacting massive particle dark matter candidate. An alternative is to have
unparticle state as dark matter candidate. We also comment on some collider
implications.
| hep-ph | we propose a model that introduces a supersymmetric unparticle operator in the minimal supersymmetric standard model we analyze the lowest dimension operator involving an unparticle this operator behaves as a standard model gauge singlet and it introduces a new parameter into the higgs potential which can provide an alternative way to relax the upper limit on the lightest higgs boson mass this operator also introduces several unparticle interactions which can induce a neutral higgsino to decay into a spinor unparticle it also induces violation of scale invariance around the electroweak scale it is necessary for the scale of this violation to be larger than the lightest supersymmetric particle mass to maintain the latter as the usual weakly interacting massive particle dark matter candidate an alternative is to have unparticle state as dark matter candidate we also comment on some collider implications | [['we', 'propose', 'a', 'model', 'that', 'introduces', 'a', 'supersymmetric', 'unparticle', 'operator', 'in', 'the', 'minimal', 'supersymmetric', 'standard', 'model', 'we', 'analyze', 'the', 'lowest', 'dimension', 'operator', 'involving', 'an', 'unparticle', 'this', 'operator', 'behaves', 'as', 'a', 'standard', 'model', 'gauge', 'singlet', 'and', 'it', 'introduces', 'a', 'new', 'parameter', 'into', 'the', 'higgs', 'potential', 'which', 'can', 'provide', 'an', 'alternative', 'way', 'to', 'relax', 'the', 'upper', 'limit', 'on', 'the', 'lightest', 'higgs', 'boson', 'mass', 'this', 'operator', 'also', 'introduces', 'several', 'unparticle', 'interactions', 'which', 'can', 'induce', 'a', 'neutral', 'higgsino', 'to', 'decay', 'into', 'a', 'spinor', 'unparticle', 'it', 'also', 'induces', 'violation', 'of', 'scale', 'invariance', 'around', 'the', 'electroweak', 'scale', 'it', 'is', 'necessary', 'for', 'the', 'scale', 'of', 'this', 'violation', 'to', 'be', 'larger', 'than', 'the', 'lightest', 'supersymmetric', 'particle', 'mass', 'to', 'maintain', 'the', 'latter', 'as', 'the', 'usual', 'weakly', 'interacting', 'massive', 'particle', 'dark', 'matter', 'candidate', 'an', 'alternative', 'is', 'to', 'have', 'unparticle', 'state', 'as', 'dark', 'matter', 'candidate', 'we', 'also', 'comment', 'on', 'some', 'collider', 'implications']] | [-0.09101126102915576, 0.26534238411392275, -0.09171385398169266, 0.2075347002977109, -0.1514816965267115, -0.19842965357791606, -0.013739230304441236, 0.27423500019977703, -0.22251068498503337, -0.29101551370364975, 0.016753400173137322, -0.2527589650018841, -0.08620357824859361, 0.09938806293083104, 0.04289167286854581, 0.04176843652488492, -0.0052169467395184735, 0.06446470933035842, -0.050569307285275124, -0.2285968725427536, 0.31909995590475326, 0.06466392959065154, 0.18742650720218185, 0.10031780312894613, 0.09481862721740143, -0.015354378001949361, 0.04140212055929798, -0.08814915320472726, -0.13212214126475594, 0.09420712652834172, 0.12698949389787167, 0.10412151769549975, 0.17429363285356486, -0.3484077291655625, -0.17929784382250927, 0.23502276254593268, 0.19155348114775006, 0.11947767772374952, -0.08405233626600672, -0.3349899312626597, 0.05575832469613417, -0.2522230764903815, -0.13320599032767408, -0.10033567600507051, -0.03585704905476342, -0.18705324460884412, -0.3238234496675432, 0.10832743139723679, -0.01972449563463476, -0.04238695148580893, -0.018373275581905817, -0.11291795276957466, -0.046612385957640536, -0.032007380415923256, 0.15849546312126628, 0.014387739931253042, 0.19789190479745786, -0.2001953341582037, -0.13474960574642458, 0.42609327241236755, -0.1510248283583362, -0.24715957248662698, 0.1854166052178711, -0.10725161369480457, -0.16902900543328084, 0.07806347435710172, 0.18635471665848655, 0.06427006522550228, -0.17814911395337776, 0.2270772328318744, -0.10003288130355166, 0.19385466620933714, 0.031614397487319104, 0.10917802888186688, 0.27761935930804793, 0.23365697326098986, 0.14336562047857818, 0.11577063683232174, -0.046801748820943824, -0.1038447199521441, -0.4192048598160135, -0.21241422926888187, -0.09134438623350563, 0.06992990796605755, -0.08941709902705146, -0.14612715160276027, 0.38629509161180214, 0.1804214283718285, 0.24397918322381187, 0.012717073023689131, 0.278980011886633, 0.13430830350736855, 0.1202725966368944, 0.008796440145468954, 0.30262490707480166, 0.11155247537036103, 0.10061865441950289, -0.2133165019191141, -0.07353455524442466, 0.11563083847178847] |
707.296 | Dynamical Friction and Galaxy Merging Timescales | The timescale for galaxies within merging dark matter halos to merge with
each other is an important ingredient in galaxy formation models. Accurate
estimates of merging timescales are required for predictions of astrophysical
quantities such as black hole binary merger rates, the build-up of stellar mass
in central galaxies, and the statistical properties of satellite galaxies
within dark matter halos. In this paper, we study the merging timescales of
extended dark matter halos using N-body simulations. We compare these results
to standard estimates based on the Chandrasekhar theory of dynamical friction.
We find that these standard predictions for merging timescales, which are often
used in semi-analytic galaxy formation models, are systematically shorter than
those found in simulations. The discrepancy is approximately a factor of 1.7
for $M_sat/M_host \approx 0.1$ and becomes larger for more disparate
satellite-to-host mass ratios, reaching a factor of $\sim 3.3$ for
$M_sat/M_host\approx 0.01$. Based on our simulations, we propose a new, easily
implementable fitting formula that accurately predicts the timescale for an
extended satellite to sink from the virial radius of a host halo down to the
halo's center for a wide range of $M_sat/M_host$ and orbits. Including a
central bulge in each galaxy changes the merging timescale by $\la 10%$. To
highlight one concrete application of our results, we show that merging
timescales often used in the literature overestimate the growth of stellar mass
by satellite accretion by $\approx 40 %$, with the extra mass gained in low
mass ratio mergers.
| astro-ph | the timescale for galaxies within merging dark matter halos to merge with each other is an important ingredient in galaxy formation models accurate estimates of merging timescales are required for predictions of astrophysical quantities such as black hole binary merger rates the buildup of stellar mass in central galaxies and the statistical properties of satellite galaxies within dark matter halos in this paper we study the merging timescales of extended dark matter halos using nbody simulations we compare these results to standard estimates based on the chandrasekhar theory of dynamical friction we find that these standard predictions for merging timescales which are often used in semianalytic galaxy formation models are systematically shorter than those found in simulations the discrepancy is approximately a factor of 17 for m_satm_host approx 01 and becomes larger for more disparate satellitetohost mass ratios reaching a factor of sim 33 for m_satm_hostapprox 001 based on our simulations we propose a new easily implementable fitting formula that accurately predicts the timescale for an extended satellite to sink from the virial radius of a host halo down to the halos center for a wide range of m_satm_host and orbits including a central bulge in each galaxy changes the merging timescale by la 10 to highlight one concrete application of our results we show that merging timescales often used in the literature overestimate the growth of stellar mass by satellite accretion by approx 40 with the extra mass gained in low mass ratio mergers | [['the', 'timescale', 'for', 'galaxies', 'within', 'merging', 'dark', 'matter', 'halos', 'to', 'merge', 'with', 'each', 'other', 'is', 'an', 'important', 'ingredient', 'in', 'galaxy', 'formation', 'models', 'accurate', 'estimates', 'of', 'merging', 'timescales', 'are', 'required', 'for', 'predictions', 'of', 'astrophysical', 'quantities', 'such', 'as', 'black', 'hole', 'binary', 'merger', 'rates', 'the', 'buildup', 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0.022788717669303998, 0.01518526332152715] |
707.2961 | Scaling in the Fan of an Unconventional Quantum Critical Point | We present results of extensive finite-temperature Quantum Monte Carlo
simulations on a SU(2) symmetric S=1/2 quantum antiferromagnet with a four-spin
interaction [Sandvik, Phys. Rev. Lett. 98, 227202 (2007)]. Our simulations,
which are free of the sign-problem and carried out on lattices containing in
excess of 1.6 X 10^4 spins, indicate that the four-spin interaction destroys
the N\'eel order at an unconventional z=1 quantum critical point, producing a
valence-bond solid paramagnet. Our results are consistent with the `deconfined
quantum criticality' scenario.
| cond-mat.str-el | we present results of extensive finitetemperature quantum monte carlo simulations on a su2 symmetric s12 quantum antiferromagnet with a fourspin interaction sandvik phys rev lett 98 227202 2007 our simulations which are free of the signproblem and carried out on lattices containing in excess of 16 x 104 spins indicate that the fourspin interaction destroys the neel order at an unconventional z1 quantum critical point producing a valencebond solid paramagnet our results are consistent with the deconfined quantum criticality scenario | [['we', 'present', 'results', 'of', 'extensive', 'finitetemperature', 'quantum', 'monte', 'carlo', 'simulations', 'on', 'a', 'su2', 'symmetric', 's12', 'quantum', 'antiferromagnet', 'with', 'a', 'fourspin', 'interaction', 'sandvik', 'phys', 'rev', 'lett', '98', '227202', '2007', 'our', 'simulations', 'which', 'are', 'free', 'of', 'the', 'signproblem', 'and', 'carried', 'out', 'on', 'lattices', 'containing', 'in', 'excess', 'of', '16', 'x', '104', 'spins', 'indicate', 'that', 'the', 'fourspin', 'interaction', 'destroys', 'the', 'neel', 'order', 'at', 'an', 'unconventional', 'z1', 'quantum', 'critical', 'point', 'producing', 'a', 'valencebond', 'solid', 'paramagnet', 'our', 'results', 'are', 'consistent', 'with', 'the', 'deconfined', 'quantum', 'criticality', 'scenario']] | [-0.17896873191517743, 0.24261551437169296, -0.048129243233913106, -0.019613877257120004, 0.01798187566131259, -0.1443460603786892, 0.1133110565162865, 0.3870222949411107, -0.08837638618542423, -0.25820992752626726, -0.0100698864715221, -0.40190388818707645, -0.10743474164576847, 0.15209659984736126, 0.09467211702420035, 0.036529631554325925, 0.023990007753990874, -0.02489561787246479, -0.1435394857072896, -0.31681464160969364, 0.16865456964259914, 0.06081522712366113, 0.2651440791573517, 0.06541399219179456, 0.07367376278189919, 0.02005046314878177, 0.12041712969635861, -0.04232691386950355, -0.23089470459441905, -0.025744970793588253, 0.2259141870117098, -0.10493477880718964, 0.15552063258996607, -0.4128262510145955, -0.230514853061, 0.06343896493692941, 0.0827321938911005, 0.15200931120876082, -0.06231939014860818, -0.390323807662235, 0.037724653621428184, -0.27300115773024014, -0.11642402560226148, -0.16465883048935026, -0.03096694544346744, -0.05879767755078906, -0.29583856871328024, 0.17783366678919219, 0.05478116329995137, 0.14480621862826468, 0.01898728021055083, -0.09821440403267176, -0.050611724016032644, -0.02734429931822174, -0.059248950846693654, 0.15279134584861936, 0.13447409055985604, -0.07733471917660459, -0.23960425241414127, 0.337794041143188, 0.02439787487434577, -0.09922370873981073, 0.23423920613359897, -0.15090761274464806, -0.13347441625274434, 0.16571342454680912, 0.0691576790008576, 0.0869729680044553, -0.09732632331927366, 0.12729001979423168, -0.08272454386011144, 0.19533853348870645, -0.04570119016909901, 0.002329787471940626, 0.2765841305350201, 0.12496026194524727, -0.06387296341996215, 0.18881588797615487, -0.11028357169036812, -0.27743532173807106, -0.3118386598645792, -0.1554506976080799, -0.26685680304595, 0.15292138649928796, -0.10408235997343995, -0.16439270343089216, 0.3128549209736948, 0.2144676926840521, 0.1409550659075568, -0.04813394177251177, 0.1514538626033294, 0.01655136995736651, -0.019102800213083436, 0.12676658410920844, 0.21703862401220617, 0.19223612317332078, 0.05081672540311761, -0.30087750564223226, -0.06767769816296199, 0.06924016295071644] |
707.2962 | Decomposing Dusty Galaxies. I. Multi-Component Spectral Energy
Distribution Fitting | We present a new multi-component spectral energy distribution (SED)
decomposition method and use it to analyze the ultraviolet to millimeter
wavelength SEDs of a sample of dusty infrared-luminous galaxies. SEDs are
constructed from spectroscopic and photometric data obtained with the Spitzer
Space Telescope, in conjunction with photometry from the literature. Each SED
is decomposed into emission from populations of stars, an AGN accretion disk,
PAHs, atomic and molecular lines, and distributions of graphite and silicate
grains. Decompositions of the SEDs of the template starburst galaxies NGC7714
and NGC2623 and the template AGNs PG0804+761 and Mrk463 provide baseline
properties to aid in quantifying the strength of star-formation and accretion
in the composite systems NGC6240 and Mrk1014. We find that obscured radiation
from stars is capable of powering the total dust emission from NGC6240,
although we cannot rule out a contribution from a deeply embedded AGN visible
only in X-rays. The decomposition of Mrk1014 is consistent with ~65% of its
power emerging from an AGN and ~35% from star-formation. We suggest that many
of the variations in our template starburst SEDs may be explained in terms of
the different mean optical depths through the clouds of dust surrounding the
young stars within each galaxy. Prompted by the divergent far-IR properties of
our template AGNs, we suggest that variations in the relative orientation of
their AGN accretion disks with respect to the disks of the galaxies hosting
them may result in different amounts of AGN-heated cold dust emission emerging
from their host galaxies. We estimate that 30-50% of the far-IR and PAH
emission from Mrk1014 may originate from such AGN-heated material in its host
galaxy disk.
| astro-ph | we present a new multicomponent spectral energy distribution sed decomposition method and use it to analyze the ultraviolet to millimeter wavelength seds of a sample of dusty infraredluminous galaxies seds are constructed from spectroscopic and photometric data obtained with the spitzer space telescope in conjunction with photometry from the literature each sed is decomposed into emission from populations of stars an agn accretion disk pahs atomic and molecular lines and distributions of graphite and silicate grains decompositions of the seds of the template starburst galaxies ngc7714 and ngc2623 and the template agns pg0804761 and mrk463 provide baseline properties to aid in quantifying the strength of starformation and accretion in the composite systems ngc6240 and mrk1014 we find that obscured radiation from stars is capable of powering the total dust emission from ngc6240 although we cannot rule out a contribution from a deeply embedded agn visible only in xrays the decomposition of mrk1014 is consistent with 65 of its power emerging from an agn and 35 from starformation we suggest that many of the variations in our template starburst seds may be explained in terms of the different mean optical depths through the clouds of dust surrounding the young stars within each galaxy prompted by the divergent farir properties of our template agns we suggest that variations in the relative orientation of their agn accretion disks with respect to the disks of the galaxies hosting them may result in different amounts of agnheated cold dust emission emerging from their host galaxies we estimate that 3050 of the farir and pah emission from mrk1014 may originate from such agnheated material in its host galaxy disk | [['we', 'present', 'a', 'new', 'multicomponent', 'spectral', 'energy', 'distribution', 'sed', 'decomposition', 'method', 'and', 'use', 'it', 'to', 'analyze', 'the', 'ultraviolet', 'to', 'millimeter', 'wavelength', 'seds', 'of', 'a', 'sample', 'of', 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707.2963 | Two-body transients in coupled atomic-molecular BECs | We discuss the dynamics of an atomic Bose-Einstein condensate when pairs of
atoms are converted into molecules by single-color photoassociation. Three main
regimes are found and it is shown that they can be understood on the basis of
time-dependent two-body theory. In particular, the so-called rogue dissociation
regime [Phys. Rev. Lett., 88, 090403 (2002)], which has a density-dependent
limit on the photoassociation rate, is identified with a transient regime of
the two-atom dynamics exhibiting universal properties. Finally, we illustrate
how these regimes could be explored by photoassociating condensates of
alkaline-earth atoms.
| physics.atom-ph | we discuss the dynamics of an atomic boseeinstein condensate when pairs of atoms are converted into molecules by singlecolor photoassociation three main regimes are found and it is shown that they can be understood on the basis of timedependent twobody theory in particular the socalled rogue dissociation regime phys rev lett 88 090403 2002 which has a densitydependent limit on the photoassociation rate is identified with a transient regime of the twoatom dynamics exhibiting universal properties finally we illustrate how these regimes could be explored by photoassociating condensates of alkalineearth atoms | [['we', 'discuss', 'the', 'dynamics', 'of', 'an', 'atomic', 'boseeinstein', 'condensate', 'when', 'pairs', 'of', 'atoms', 'are', 'converted', 'into', 'molecules', 'by', 'singlecolor', 'photoassociation', 'three', 'main', 'regimes', 'are', 'found', 'and', 'it', 'is', 'shown', 'that', 'they', 'can', 'be', 'understood', 'on', 'the', 'basis', 'of', 'timedependent', 'twobody', 'theory', 'in', 'particular', 'the', 'socalled', 'rogue', 'dissociation', 'regime', 'phys', 'rev', 'lett', '88', '090403', '2002', 'which', 'has', 'a', 'densitydependent', 'limit', 'on', 'the', 'photoassociation', 'rate', 'is', 'identified', 'with', 'a', 'transient', 'regime', 'of', 'the', 'twoatom', 'dynamics', 'exhibiting', 'universal', 'properties', 'finally', 'we', 'illustrate', 'how', 'these', 'regimes', 'could', 'be', 'explored', 'by', 'photoassociating', 'condensates', 'of', 'alkalineearth', 'atoms']] | [-0.12047149466428285, 0.23346113093446344, -0.06420049128743509, 0.017489981058881516, 0.06594597869035271, -0.13156089604728752, 0.05294564923452627, 0.3796257433274554, -0.21592995898228967, -0.21959543858603056, -0.017446232055469104, -0.2589689327300423, -0.15710675911977887, 0.19121133927191195, -0.00458013497862137, 0.006045060501330428, 0.03786271245399904, -0.041521742360459434, -0.006714575544982735, -0.288177786855441, 0.273919930221099, 0.031199868571841056, 0.2644293021617664, 0.10065060766517288, 0.05446457466007107, -0.03829172996079756, 0.09181164572041275, -0.02748923810819785, -0.19082038510475993, 0.03287248704582453, 0.22400265749440426, 0.04135053536026842, 0.2369555328300016, -0.4549843913151158, -0.23187267756503488, 0.07605500924400985, 0.20664994542797407, 0.2085106154735614, -0.00031467651586151784, -0.3732157051821964, -0.03757854257968979, -0.18125780132185254, -0.13830923120905128, -0.19446887023126086, 0.09000025097694662, 0.0879383954918012, -0.2667907951813605, 0.10629331367607746, 0.03785415950955616, 0.03165510380640626, -0.04433449654736453, -0.04970072421193537, -0.0301216887931029, -0.010173516571457084, -0.034193414350091995, 0.017287569681906867, 0.15318000643617577, -0.11738935528943936, -0.11190230677732163, 0.4048706392861075, -0.10185132565869329, -0.11254116534772847, 0.24545895570061274, -0.1336534215706504, -0.07224375222706132, 0.13254670507481528, 0.14404718699709823, 0.13354347755408122, -0.17173581747160319, 0.07274225652153189, -0.08920986592355702, 0.16934231873601674, 0.12709197004636127, 0.0914020101695011, 0.2367738167030944, 0.1525549866673019, -0.071329841351447, 0.1516491931009417, -0.09110460734874425, -0.1626097449212264, -0.25667776700833606, -0.09675775109790266, -0.19024129540969928, 0.05840921307810479, 0.04016568065029181, -0.06688343410787638, 0.35441775218480165, 0.08715290387368037, 0.20525241275835368, -0.08278356550338989, 0.2025342931557033, 0.19020996265527274, -0.019993744029973944, 0.04403075146385365, 0.31483149493320123, 0.16755932700406345, 0.02177355374313063, -0.28678277438092564, 0.010709598048641864, 0.06437518541804618] |
707.2964 | Magnetism in graphene nano-islands | We study the magnetic properties of nanometer-sized graphene structures with
triangular and hexagonal shapes terminated by zig-zag edges. We discuss how the
shape of the island, the imbalance in the number of atoms belonging to the two
graphene sublattices, the existence of zero-energy states, and the total and
local magnetic moment are intimately related. We consider electronic
interactions both in a mean-field approximation of the one-orbital Hubbard
model and with density functional calculations. Both descriptions yield values
for the ground state total spin, $S$, consistent with Lieb's theorem for
bipartite lattices. Triangles have a finite $S$ for all sizes whereas hexagons
have S=0 and develop local moments above a critical size of $\approx 1.5$ nm.
| cond-mat.mes-hall cond-mat.str-el | we study the magnetic properties of nanometersized graphene structures with triangular and hexagonal shapes terminated by zigzag edges we discuss how the shape of the island the imbalance in the number of atoms belonging to the two graphene sublattices the existence of zeroenergy states and the total and local magnetic moment are intimately related we consider electronic interactions both in a meanfield approximation of the oneorbital hubbard model and with density functional calculations both descriptions yield values for the ground state total spin s consistent with liebs theorem for bipartite lattices triangles have a finite s for all sizes whereas hexagons have s0 and develop local moments above a critical size of approx 15 nm | [['we', 'study', 'the', 'magnetic', 'properties', 'of', 'nanometersized', 'graphene', 'structures', 'with', 'triangular', 'and', 'hexagonal', 'shapes', 'terminated', 'by', 'zigzag', 'edges', 'we', 'discuss', 'how', 'the', 'shape', 'of', 'the', 'island', 'the', 'imbalance', 'in', 'the', 'number', 'of', 'atoms', 'belonging', 'to', 'the', 'two', 'graphene', 'sublattices', 'the', 'existence', 'of', 'zeroenergy', 'states', 'and', 'the', 'total', 'and', 'local', 'magnetic', 'moment', 'are', 'intimately', 'related', 'we', 'consider', 'electronic', 'interactions', 'both', 'in', 'a', 'meanfield', 'approximation', 'of', 'the', 'oneorbital', 'hubbard', 'model', 'and', 'with', 'density', 'functional', 'calculations', 'both', 'descriptions', 'yield', 'values', 'for', 'the', 'ground', 'state', 'total', 'spin', 's', 'consistent', 'with', 'liebs', 'theorem', 'for', 'bipartite', 'lattices', 'triangles', 'have', 'a', 'finite', 's', 'for', 'all', 'sizes', 'whereas', 'hexagons', 'have', 's0', 'and', 'develop', 'local', 'moments', 'above', 'a', 'critical', 'size', 'of', 'approx', '15', 'nm']] | [-0.16417821633184085, 0.18618373772453356, -0.008674694559759583, 0.059282741922399275, 0.029528791105637893, -0.11593824466690421, 0.06345711499705668, 0.3854163808019265, -0.23257148908046277, -0.30453223401437635, 0.025128685968482625, -0.3403899123811204, -0.07694571914718203, 0.08705442696404846, 0.06906751352969719, 0.012582143836619292, 0.018334979349342376, 0.0002640273907910223, -0.09338236184203592, -0.2381744776994152, 0.2873833809837537, -0.03510275952437002, 0.29982028959885887, 0.07876355506722695, -0.008358240184252677, 0.03790478273092405, 0.11343599667610682, 0.054579870202376146, -0.19665341501974543, 0.12402951821188807, 0.1988161170207288, -0.05664684042415541, 0.19947011500758968, -0.4920835635422365, -0.1392177306305435, 0.058129229015954166, 0.09402533923883154, 0.12517567927260762, -0.02159966425160351, -0.26225825817243237, 0.08332904512670053, -0.12919382096227744, -0.1576489945448449, -0.07566479961185352, 0.029544724912747095, 0.07092543841825555, -0.22796853179031093, 0.11321079788891518, 0.07335534760849956, 0.08270270597821092, -0.10106649025464835, -0.17815391814093226, -0.10287723355400173, 0.06556129315463097, -0.0015965781579522983, 0.002690474124139418, 0.10817846023356137, -0.12187586539151633, -0.1313618692731404, 0.3627874798829789, -0.028304478544336945, -0.13923129931335215, 0.16785590929161434, -0.17991895710887468, -0.1083608616993803, 0.12471127475652358, 0.11165792772789364, 0.0908900914389802, -0.09883592188834091, 0.109349759576498, -0.07397642401654435, 0.156242961775633, 0.06908409465509265, 0.07329521037476218, 0.23013159716906756, 0.13366917475005208, 0.11706072055613218, 0.16605750055092833, -0.13374607950934897, -0.09686954550283111, -0.2371202308765572, -0.130107307344999, -0.21140772445309583, 0.04964561992041443, -0.10844274904191717, -0.2204259663577313, 0.424444561921384, 0.09620081202896393, 0.23306684639993244, 0.006548048061845095, 0.18171845676944307, 0.09650414334610105, 0.06007850574653434, 0.06805299196453037, 0.18656148531514666, 0.2142253577425752, 0.021476406612150046, -0.2574187681119403, 0.027554161789948527, 0.07683978285842939] |
707.2965 | A comprehensive study of Cepheid variables in the Andromeda galaxy.
Period distribution, blending and distance determination | Extragalactic Cepheids are the basic rungs of the cosmic distance scale. They
are excellent standard candles, although their luminosities and corresponding
distance estimates can be affected by the particular properties of the host
galaxy. Therefore, the accurate analysis of the Cepheid population in other
galaxies, and notably in the Andromeda Galaxy (M31), is crucial to obtaining
reliable distance determinations. We obtained accurate photometry (in B and V
passbands) of 416 Cepheids in M31 over a five year campaign within a survey
aimed at the detection of eclipsing binaries. The resulting Cepheid sample is
the most complete in M31 and has almost the same period distribution as the
David Dunlap Observatory sample in the Milky Way. The large number of epochs
(~250 per filter) has permitted the characterisation of the pulsation modes of
356 Cepheids, with 281 of them pulsating in the fundamental mode and 75 in the
first overtone. The period-luminosity relationship of the fundamental mode
Cepheids has been studied and a new approach has been used to estimate the
effect of blending. We find that the blending contribution is as important as
the metallicity correction when computing Cepheid distance determinations to
M31 (~0.1 mag). Since large amplitude Cepheids are less affected by blending,
we have used those with an amplitude A_V>0.8 mag to derive a distance to M31 of
(m-M)_0=24.32+/-0.12 mag.
| astro-ph | extragalactic cepheids are the basic rungs of the cosmic distance scale they are excellent standard candles although their luminosities and corresponding distance estimates can be affected by the particular properties of the host galaxy therefore the accurate analysis of the cepheid population in other galaxies and notably in the andromeda galaxy m31 is crucial to obtaining reliable distance determinations we obtained accurate photometry in b and v passbands of 416 cepheids in m31 over a five year campaign within a survey aimed at the detection of eclipsing binaries the resulting cepheid sample is the most complete in m31 and has almost the same period distribution as the david dunlap observatory sample in the milky way the large number of epochs 250 per filter has permitted the characterisation of the pulsation modes of 356 cepheids with 281 of them pulsating in the fundamental mode and 75 in the first overtone the periodluminosity relationship of the fundamental mode cepheids has been studied and a new approach has been used to estimate the effect of blending we find that the blending contribution is as important as the metallicity correction when computing cepheid distance determinations to m31 01 mag since large amplitude cepheids are less affected by blending we have used those with an amplitude a_v08 mag to derive a distance to m31 of mm_02432012 mag | [['extragalactic', 'cepheids', 'are', 'the', 'basic', 'rungs', 'of', 'the', 'cosmic', 'distance', 'scale', 'they', 'are', 'excellent', 'standard', 'candles', 'although', 'their', 'luminosities', 'and', 'corresponding', 'distance', 'estimates', 'can', 'be', 'affected', 'by', 'the', 'particular', 'properties', 'of', 'the', 'host', 'galaxy', 'therefore', 'the', 'accurate', 'analysis', 'of', 'the', 'cepheid', 'population', 'in', 'other', 'galaxies', 'and', 'notably', 'in', 'the', 'andromeda', 'galaxy', 'm31', 'is', 'crucial', 'to', 'obtaining', 'reliable', 'distance', 'determinations', 'we', 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707.2966 | Graphene based spin field effect transistor | A spin field effect transistor (FET) is proposed by utilizing a graphene
nanoribbon as the channel. Similar to the conventional spin FETs, the device
involves ferromagnetic metals as a source and drain; they, in turn, are
connected to the graphene channel. Due to the negligible spin-orbital coupling
in the carbon based materials, the bias can accomplishes spin manipulation by
means of electrical control of electron exchange interaction with a
ferromagnetic dielectric attached to the nanoribbon between source and drain.
The numerical estimations show the feasibility of graphene-based spin FET if a
bias varies exchange interaction on the amount around 5 meV. It was shown that
the device stability to the thermal dispersion can provide the armchair
nanoribbons of specific width that keeps the Dirac point in electron dispersion
law.
| cond-mat.mtrl-sci | a spin field effect transistor fet is proposed by utilizing a graphene nanoribbon as the channel similar to the conventional spin fets the device involves ferromagnetic metals as a source and drain they in turn are connected to the graphene channel due to the negligible spinorbital coupling in the carbon based materials the bias can accomplishes spin manipulation by means of electrical control of electron exchange interaction with a ferromagnetic dielectric attached to the nanoribbon between source and drain the numerical estimations show the feasibility of graphenebased spin fet if a bias varies exchange interaction on the amount around 5 mev it was shown that the device stability to the thermal dispersion can provide the armchair nanoribbons of specific width that keeps the dirac point in electron dispersion law | [['a', 'spin', 'field', 'effect', 'transistor', 'fet', 'is', 'proposed', 'by', 'utilizing', 'a', 'graphene', 'nanoribbon', 'as', 'the', 'channel', 'similar', 'to', 'the', 'conventional', 'spin', 'fets', 'the', 'device', 'involves', 'ferromagnetic', 'metals', 'as', 'a', 'source', 'and', 'drain', 'they', 'in', 'turn', 'are', 'connected', 'to', 'the', 'graphene', 'channel', 'due', 'to', 'the', 'negligible', 'spinorbital', 'coupling', 'in', 'the', 'carbon', 'based', 'materials', 'the', 'bias', 'can', 'accomplishes', 'spin', 'manipulation', 'by', 'means', 'of', 'electrical', 'control', 'of', 'electron', 'exchange', 'interaction', 'with', 'a', 'ferromagnetic', 'dielectric', 'attached', 'to', 'the', 'nanoribbon', 'between', 'source', 'and', 'drain', 'the', 'numerical', 'estimations', 'show', 'the', 'feasibility', 'of', 'graphenebased', 'spin', 'fet', 'if', 'a', 'bias', 'varies', 'exchange', 'interaction', 'on', 'the', 'amount', 'around', '5', 'mev', 'it', 'was', 'shown', 'that', 'the', 'device', 'stability', 'to', 'the', 'thermal', 'dispersion', 'can', 'provide', 'the', 'armchair', 'nanoribbons', 'of', 'specific', 'width', 'that', 'keeps', 'the', 'dirac', 'point', 'in', 'electron', 'dispersion', 'law']] | [-0.21690589409928893, 0.14112745516648328, -0.018559780390572177, -0.018097229557321227, -0.05423745838451459, -0.22612850448520955, 0.07930927082549694, 0.43995067607178245, -0.2648533702243206, -0.3172656508061544, -0.023089401848982415, -0.31163857482886304, -0.09970514860740581, 0.21877441355595798, 0.019128923773650053, 0.010940593865866115, 0.005709578853475955, -0.04932186652724848, -0.05914930634059792, -0.18505879702017636, 0.2372942319854574, 0.06563500349604806, 0.35385233140009087, 0.1473375937663192, 0.061082681005661804, 0.03532895562058502, 0.1292809830733048, 0.025331923066703385, -0.08468237536647556, 0.044700668908135836, 0.22428760605831738, -0.1712125249300874, 0.22158979369659526, -0.45036250409172024, -0.1957694802779791, -0.042717469213602616, 0.13798781615265018, 0.15848136915240524, -0.07319634700962883, -0.2737221342670305, 0.08843939754409831, -0.18805258703064318, -0.08579803355825097, -0.007539086375934209, -0.012723101435640698, 0.005975157859944558, -0.23207556625265022, 0.07752475923634777, 0.03764019048115773, -0.003614544489442609, -0.037487274075518974, -0.12302756000873308, -0.12091787866699823, 0.08409940396514974, 0.03827527125524862, 0.021370758573243092, 0.2674369322092727, -0.12832069557337017, -0.12357678206623063, 0.3495898935618962, -0.06811751649794422, -0.16922259083840735, 0.13027692726333157, -0.15053030209933488, 0.029234458616566518, 0.1276093945448655, 0.09297007810714286, 0.042351101782606544, -0.1996886940716311, 0.07570867077898696, 0.005575616705022001, 0.17841552624541204, 0.07448951830675053, 0.07557194514647704, 0.30069710925048176, 0.2082638634051117, 0.07862027419384482, 0.14583950008576116, -0.14246037751688917, -0.007721470566033278, -0.21078970722218818, -0.1790865630618939, -0.23290220632167288, 0.12561608862326762, -0.07875176137128245, -0.18423409558279447, 0.43948723927371264, 0.17573234236940413, 0.10582306016554203, -0.04093763058239869, 0.30094420525801274, 0.13281993156970415, 0.11858418851354441, 0.013634683417376083, 0.25993564193562946, 0.23744229961533186, 0.10860442464030529, -0.30552318379690857, 0.08320910558682079, -0.05764309298824663] |
707.2967 | Analytic Resolution of Puzzle in $B\to K \pi$ decays | We present a systematic method to extract each standard model (SM)-{\it like}
hadronic parameter as well as new physics parameters in analytic way for $B\to
K\pi$ decays. Using the analytic method to the currently available experimental
data, we find two possible solutions analytically equivalent: one showing the
large SM-{\it like} color-suppressed tree contribution and the other showing
the large SM-{\it like} EWP contribution. The magnitude of the NP amplitude and
its weak phase are quite large. For instance, we find $|P^{NP}/P| =
0.39\pm0.13$, $\phi^{NP}=91^\circ\pm15^\circ$ and
$\delta^{NP}=8^\circ\pm27^\circ$, which are the ratio of the NP-to-SM
contribution, the weak and the relative strong phase of the NP amplitude,
respectively.
| hep-ph | we present a systematic method to extract each standard model smit like hadronic parameter as well as new physics parameters in analytic way for bto kpi decays using the analytic method to the currently available experimental data we find two possible solutions analytically equivalent one showing the large smit like colorsuppressed tree contribution and the other showing the large smit like ewp contribution the magnitude of the np amplitude and its weak phase are quite large for instance we find pnpp 039pm013 phinp91circpm15circ and deltanp8circpm27circ which are the ratio of the nptosm contribution the weak and the relative strong phase of the np amplitude respectively | [['we', 'present', 'a', 'systematic', 'method', 'to', 'extract', 'each', 'standard', 'model', 'smit', 'like', 'hadronic', 'parameter', 'as', 'well', 'as', 'new', 'physics', 'parameters', 'in', 'analytic', 'way', 'for', 'bto', 'kpi', 'decays', 'using', 'the', 'analytic', 'method', 'to', 'the', 'currently', 'available', 'experimental', 'data', 'we', 'find', 'two', 'possible', 'solutions', 'analytically', 'equivalent', 'one', 'showing', 'the', 'large', 'smit', 'like', 'colorsuppressed', 'tree', 'contribution', 'and', 'the', 'other', 'showing', 'the', 'large', 'smit', 'like', 'ewp', 'contribution', 'the', 'magnitude', 'of', 'the', 'np', 'amplitude', 'and', 'its', 'weak', 'phase', 'are', 'quite', 'large', 'for', 'instance', 'we', 'find', 'pnpp', '039pm013', 'phinp91circpm15circ', 'and', 'deltanp8circpm27circ', 'which', 'are', 'the', 'ratio', 'of', 'the', 'nptosm', 'contribution', 'the', 'weak', 'and', 'the', 'relative', 'strong', 'phase', 'of', 'the', 'np', 'amplitude', 'respectively']] | [-0.08855595285771414, 0.13541019023396075, -0.062385015478357675, 0.14468536362983286, -0.07880656626075506, -0.12187043877318501, 0.0661579195165541, 0.2940510749211535, -0.2878464125841856, -0.2984802973968908, 0.06992834358359687, -0.29743260073359123, -0.12107461436651647, 0.1938465716294013, 0.059138200506567956, 0.07626650716119912, 0.054936036150902506, 0.01754998866468668, -0.0489899801654974, -0.16719547756714748, 0.28311688555404546, 0.0012824945244938135, 0.2540030911169015, 0.08767669910565018, 0.014398400374921039, -0.015228210128843784, -0.06258550231344998, 0.02489563012495637, -0.14187350817490368, 0.05818299639038742, 0.20646233794046565, 0.10265231820056214, 0.13616326291114092, -0.3595426144823432, -0.09157468683086335, 0.1296012089494616, 0.12722852163948117, 0.1499477080849465, -0.02855659769847989, -0.28099022168666127, 0.07916683482006193, -0.17002926103305072, -0.10853878993541002, -0.11116238433402031, 0.02344487541820854, -0.00513015020871535, -0.29770114648155865, 0.09963973765261472, 0.02063178522432281, -0.016700018486008047, -0.009557820303598419, -0.22697077442891897, 0.028862422422971577, 0.10845534010324627, 0.09151813800923264, 0.07528295755386352, 0.08666712606325745, -0.14866509297629818, -0.09562775417231023, 0.3874601486697793, -0.11921874407678842, -0.15626247411593794, 0.18677874234505, -0.15122453370131553, -0.15578096512705086, 0.12313285979442298, 0.14165140596684067, 0.1042905453487765, -0.13014309850521386, 0.1149580684513785, 0.011459293160587549, 0.16986859523691236, 0.021600015107542277, 0.06282061463687569, 0.14390388486906885, 0.16579061031341552, 0.015321658672764898, 0.1405899183737347, -0.11958644806873053, -0.08460325169435237, -0.33231535526923833, -0.10657086773775518, -0.1040416909835767, 0.013251407742500306, -0.11095198708062526, -0.17945841831620782, 0.3796734340582043, 0.14360910978633912, 0.2330332144536078, 0.04970155200106092, 0.34000644121319057, 0.10611753375793341, 0.056667765351012346, 0.041597458057804036, 0.32078951033763586, 0.08870611259713769, 0.08889635194092989, -0.2528457546420395, 0.07067728653084487, 0.044164548818953334] |
707.2968 | Structure and evolution of Zel'dovich pancakes as probes of dark energy
models | We examine how coupled dark matter and dark energy modify the development of
Zel'dovich pancakes. We study how the various effects of these theories, such
as a fifth force in the dark sector and a modified particle Hubble drag,
produce variations in the redshifts of caustic formation and the present-day
density profiles of pancakes. We compare our results in direct simulation to a
perturbation theory approach for the dark energy scalar field. We determine the
range of initial scalar field amplitudes for which perturbation theory is
accurate in describing the development of the pancakes. Notably, we find that
perturbative methods which neglect kinetic terms in the scalar field equation
of motion are not valid for arbitrarily small perturbations. We also examine
whether models that have been tuned to match the constraints of current
observations can produce new observable effects in the nonlinear structure of
pancakes. Our results suggest that a fully realistic three-dimensional
simulation will produce significant new observable features, such as
modifications to the mass function and halo radial density profile shapes, that
can be used to distinguish these models from standard concordance cosmology and
from each other.
| astro-ph | we examine how coupled dark matter and dark energy modify the development of zeldovich pancakes we study how the various effects of these theories such as a fifth force in the dark sector and a modified particle hubble drag produce variations in the redshifts of caustic formation and the presentday density profiles of pancakes we compare our results in direct simulation to a perturbation theory approach for the dark energy scalar field we determine the range of initial scalar field amplitudes for which perturbation theory is accurate in describing the development of the pancakes notably we find that perturbative methods which neglect kinetic terms in the scalar field equation of motion are not valid for arbitrarily small perturbations we also examine whether models that have been tuned to match the constraints of current observations can produce new observable effects in the nonlinear structure of pancakes our results suggest that a fully realistic threedimensional simulation will produce significant new observable features such as modifications to the mass function and halo radial density profile shapes that can be used to distinguish these models from standard concordance cosmology and from each other | [['we', 'examine', 'how', 'coupled', 'dark', 'matter', 'and', 'dark', 'energy', 'modify', 'the', 'development', 'of', 'zeldovich', 'pancakes', 'we', 'study', 'how', 'the', 'various', 'effects', 'of', 'these', 'theories', 'such', 'as', 'a', 'fifth', 'force', 'in', 'the', 'dark', 'sector', 'and', 'a', 'modified', 'particle', 'hubble', 'drag', 'produce', 'variations', 'in', 'the', 'redshifts', 'of', 'caustic', 'formation', 'and', 'the', 'presentday', 'density', 'profiles', 'of', 'pancakes', 'we', 'compare', 'our', 'results', 'in', 'direct', 'simulation', 'to', 'a', 'perturbation', 'theory', 'approach', 'for', 'the', 'dark', 'energy', 'scalar', 'field', 'we', 'determine', 'the', 'range', 'of', 'initial', 'scalar', 'field', 'amplitudes', 'for', 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707.2969 | About the Characteristic Function of a Set | In this paper we give a method, based on the characteristic function of a
set, to solve some difficult problems of set theory in undergraduate research.
| math.GM | in this paper we give a method based on the characteristic function of a set to solve some difficult problems of set theory in undergraduate research | [['in', 'this', 'paper', 'we', 'give', 'a', 'method', 'based', 'on', 'the', 'characteristic', 'function', 'of', 'a', 'set', 'to', 'solve', 'some', 'difficult', 'problems', 'of', 'set', 'theory', 'in', 'undergraduate', 'research']] | [-0.05601307898401641, -0.017940424490146913, -0.14082124184530515, 0.05761447560955556, -0.12417334676362, -0.0996620229875239, 0.06222267310994749, 0.3387648633036476, -0.28679963459189123, -0.33127033137358153, 0.07106509823531199, -0.22369786996680957, -0.24415345411174572, 0.272661874214044, -0.10310217086225748, 0.0665371730708732, 0.05451396566170912, 0.050626749745928325, -0.0829906900270054, -0.3066007921902033, 0.36492719474391866, -0.029566412003567584, 0.23256731119293433, 0.0967143947401872, 0.11765350949449035, -0.031946162648427374, -0.009249369524276027, 0.05810448011526695, -0.14593072006335625, 0.20408200057080159, 0.3431167731491419, 0.2035376604180783, 0.41562684166889924, -0.4423063557881575, -0.13838503898407978, 0.1254564095646716, 0.10315637041528064, 0.13164309283288625, -0.039302320671805106, -0.20982913622775903, 0.0989256316366104, -0.14630906405643776, -0.1211173261802357, -0.03477914416446136, -0.0016027181051098383, -0.041098818756066836, -0.2395144457427355, -0.005334679861194813, -9.107288832847889e-05, 0.13801883085845754, -0.0811664960347116, -0.12037503361128844, 0.18565009500329885, 0.053569849114865065, 0.041189260924091704, 0.06485870525312538, 0.055984490568964526, -0.11659769383438218, -0.11716670621759616, 0.3997861562440029, -0.02195470121044379, -0.2698691703665715, 0.17469729405218878, -0.10744490223721816, -0.20664535004359025, 0.06769427359820558, 0.2804129888805059, 0.20645548575199568, -0.1662342230287882, 0.11091249004507867, -0.09258400484059866, 0.12727782889627492, 0.016045256016346123, -0.02401689110467067, 0.1672323613355939, 0.1960876525308077, 0.10071087084137477, 0.1586127342441334, 0.00810248280266443, -0.02513737489397709, -0.35807538806245875, -0.13730166881130293, -0.17444882015339458, 0.03623110586060928, 0.044954330302201785, -0.2409052186144086, 0.45086965202174795, 0.24732368912261266, 0.19399905032836473, 0.04646004525084908, 0.25963219323267156, 0.1340199208453459, -0.02197913145601678, 0.041524399286852434, 0.1190529333734258, 0.14310751831194815, 0.0994276985561905, -0.15975071382350647, 0.011560999931624303, 0.1071615419529665] |
707.297 | Implications of Interstellar Dust and Magnetic Field at the Heliosphere | Tiny interstellar dust grains causing the polarization of light from the
nearest stars are deflected sideways in the outer heliosheath regions, along
with the interstellar magnetic field. Observations of optical polarization of
stars beyond the heliosphere nose, suggest the direction of the upwind
interstellar magnetic field is relatively constant. The polarizations of nearby
stars and offset angle between HeI and HeI flowing into the heliosphere have
position angles in galactic coordinates of 30- 40 deg, indicating a local
magnetic field direction inclined by ~55 deg and ~65 deg, respectively, with
respect to the galactic and ecliptic planes. The hot and cold poles of the
measured Cosmic Microwave Background (CMB) dipole moment are nearly symmetric
around the heliosphere nose direction, and the v^{22} quadrupole vector is
directed towards the heliosphere nose. The area vectors of the CMB quadrupole
and ocotopole moments are directed towards the band perpendicular to the
ecliptic plane formed by the alternate locations for the 3 kHz emissions
detected by Voyagers 1 and 2. In the upwind direction, the position angle of
the null plane separating the CMB dipole hot and cold poles is nearly aligned
with the interstellar magnetic field direction at the Sun. Heliospheric
foreground contamination of the low-$\ell$ CMB modes now requires detailed
study.
| astro-ph | tiny interstellar dust grains causing the polarization of light from the nearest stars are deflected sideways in the outer heliosheath regions along with the interstellar magnetic field observations of optical polarization of stars beyond the heliosphere nose suggest the direction of the upwind interstellar magnetic field is relatively constant the polarizations of nearby stars and offset angle between hei and hei flowing into the heliosphere have position angles in galactic coordinates of 30 40 deg indicating a local magnetic field direction inclined by 55 deg and 65 deg respectively with respect to the galactic and ecliptic planes the hot and cold poles of the measured cosmic microwave background cmb dipole moment are nearly symmetric around the heliosphere nose direction and the v22 quadrupole vector is directed towards the heliosphere nose the area vectors of the cmb quadrupole and ocotopole moments are directed towards the band perpendicular to the ecliptic plane formed by the alternate locations for the 3 khz emissions detected by voyagers 1 and 2 in the upwind direction the position angle of the null plane separating the cmb dipole hot and cold poles is nearly aligned with the interstellar magnetic field direction at the sun heliospheric foreground contamination of the lowell cmb modes now requires detailed study | [['tiny', 'interstellar', 'dust', 'grains', 'causing', 'the', 'polarization', 'of', 'light', 'from', 'the', 'nearest', 'stars', 'are', 'deflected', 'sideways', 'in', 'the', 'outer', 'heliosheath', 'regions', 'along', 'with', 'the', 'interstellar', 'magnetic', 'field', 'observations', 'of', 'optical', 'polarization', 'of', 'stars', 'beyond', 'the', 'heliosphere', 'nose', 'suggest', 'the', 'direction', 'of', 'the', 'upwind', 'interstellar', 'magnetic', 'field', 'is', 'relatively', 'constant', 'the', 'polarizations', 'of', 'nearby', 'stars', 'and', 'offset', 'angle', 'between', 'hei', 'and', 'hei', 'flowing', 'into', 'the', 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'angle', 'of', 'the', 'null', 'plane', 'separating', 'the', 'cmb', 'dipole', 'hot', 'and', 'cold', 'poles', 'is', 'nearly', 'aligned', 'with', 'the', 'interstellar', 'magnetic', 'field', 'direction', 'at', 'the', 'sun', 'heliospheric', 'foreground', 'contamination', 'of', 'the', 'lowell', 'cmb', 'modes', 'now', 'requires', 'detailed', 'study']] | [-0.15597411981210685, 0.2116494475854919, 0.042912271160555696, 0.02261165675960141, -0.10497907508285537, -0.02657019816279689, -0.006218795228890555, 0.43894796970730215, -0.2572467652879333, -0.31436383406225316, -0.013349425091221816, -0.3197360312825857, 0.026368092436594173, 0.1602023557598631, 0.04663589527408126, -0.07825598437921144, -0.003811643638003331, -0.07298926254197095, -0.019808803285041695, -0.1767961897589535, 0.225023109545873, 0.1445018276689762, 0.19590154678847355, 0.00015257255150712669, 0.07302709557944372, -0.05486312719921653, -0.04586784039677765, -0.006955323486741131, -0.09421432328795512, 0.060506795330393985, 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707.2971 | Microlensing by Cosmic Strings | We consider the signature and detectability of gravitational microlensing of
distant quasars by cosmic strings. Because of the simple image configuration
such events will have a characteristic light curve, in which a source would
appear to brighten by exactly a factor of two, before reverting to its original
apparent brightness. We calculate the optical depth and event rate, and
conclude that current predictions and limits on the total length of strings on
the sky imply optical depths of $\la 10^{-8}$ and event rates of fewer than one
event per $10^9$ sources per year. Disregarding those predictions but replacing
them with limits on the density of cosmic strings from the CMB fluctuation
spectrum, leaves only a small region of parameter space (in which the sky
contains about $3\times10^5$ strings with deficit angle of order 0.3
milli-arcseconds) for which a microlensing survey of exposure $10^7$
source-years, spanning a 20--40-year period, might reveal the presence of
cosmic strings.
| astro-ph hep-th | we consider the signature and detectability of gravitational microlensing of distant quasars by cosmic strings because of the simple image configuration such events will have a characteristic light curve in which a source would appear to brighten by exactly a factor of two before reverting to its original apparent brightness we calculate the optical depth and event rate and conclude that current predictions and limits on the total length of strings on the sky imply optical depths of la 108 and event rates of fewer than one event per 109 sources per year disregarding those predictions but replacing them with limits on the density of cosmic strings from the cmb fluctuation spectrum leaves only a small region of parameter space in which the sky contains about 3times105 strings with deficit angle of order 03 milliarcseconds for which a microlensing survey of exposure 107 sourceyears spanning a 2040year period might reveal the presence of cosmic strings | [['we', 'consider', 'the', 'signature', 'and', 'detectability', 'of', 'gravitational', 'microlensing', 'of', 'distant', 'quasars', 'by', 'cosmic', 'strings', 'because', 'of', 'the', 'simple', 'image', 'configuration', 'such', 'events', 'will', 'have', 'a', 'characteristic', 'light', 'curve', 'in', 'which', 'a', 'source', 'would', 'appear', 'to', 'brighten', 'by', 'exactly', 'a', 'factor', 'of', 'two', 'before', 'reverting', 'to', 'its', 'original', 'apparent', 'brightness', 'we', 'calculate', 'the', 'optical', 'depth', 'and', 'event', 'rate', 'and', 'conclude', 'that', 'current', 'predictions', 'and', 'limits', 'on', 'the', 'total', 'length', 'of', 'strings', 'on', 'the', 'sky', 'imply', 'optical', 'depths', 'of', 'la', '108', 'and', 'event', 'rates', 'of', 'fewer', 'than', 'one', 'event', 'per', '109', 'sources', 'per', 'year', 'disregarding', 'those', 'predictions', 'but', 'replacing', 'them', 'with', 'limits', 'on', 'the', 'density', 'of', 'cosmic', 'strings', 'from', 'the', 'cmb', 'fluctuation', 'spectrum', 'leaves', 'only', 'a', 'small', 'region', 'of', 'parameter', 'space', 'in', 'which', 'the', 'sky', 'contains', 'about', '3times105', 'strings', 'with', 'deficit', 'angle', 'of', 'order', '03', 'milliarcseconds', 'for', 'which', 'a', 'microlensing', 'survey', 'of', 'exposure', '107', 'sourceyears', 'spanning', 'a', '2040year', 'period', 'might', 'reveal', 'the', 'presence', 'of', 'cosmic', 'strings']] | [-0.14331809437553722, 0.14993484154323822, -0.03200570080015394, 0.10848386877283357, -0.055357737740611326, -0.05341612260326061, 0.08118006935057054, 0.34320077100415636, -0.19767049343014756, -0.3773764314409954, 0.107226529071911, -0.35306113817138607, -0.02253245489878787, 0.22936538181091154, -0.038916759894669264, -0.03139532234533416, 0.06767725409084652, 0.04326610648365436, -0.05316683414066515, -0.2851526765306416, 0.2540116465583541, 0.12227299037310325, 0.21826338168580597, -0.011954019305728425, 0.12576949284975023, -0.011041656057380772, -0.10255365715353762, 0.009176994049792282, -0.13036380160556768, 0.0705578328898554, 0.1937566971363731, 0.15881607119067043, 0.1380538415936814, -0.3953403074574334, -0.23299341674782245, 0.11754481561688913, 0.14391414783560227, 0.09453436904955881, 0.01158185945169428, -0.25978407931507996, 0.06392828251076924, -0.1488872011191382, -0.12310161429390408, 0.06832960946789754, 0.08706321453468667, 0.013757232524868514, -0.17860115983133856, 0.12590784597776683, 0.025105938787139903, 0.05303710864345525, -0.04367628772332169, -0.07230248206958564, -0.021381666760562974, 0.04512785360813628, 0.06606619659844737, 0.090345495092086, 0.15247071841488186, -0.145554728816481, -0.07633863951024764, 0.3745710768986469, -0.09054626171065121, -0.05287427226312799, 0.1418055071452864, -0.22747445566689267, -0.11907389659885001, 0.1909893347883256, 0.16604320653425103, 0.10038252078868705, -0.12595028370874478, 0.02695168392676434, 0.030775109341739392, 0.2401985033138296, 0.14185790566946654, 0.08703917353657482, 0.3466877851732611, 0.10735822799790565, 0.06538595776591036, 0.08552168939700898, -0.22804774193331337, -0.02633747707419341, -0.2924452980955929, -0.08046094526755898, -0.12835927066595593, 0.11921907267594113, -0.1331089685903672, -0.13931098992721744, 0.38222025005828614, 0.14492732844638084, 0.2546941172468531, 0.057888736952175356, 0.27740369609928406, 0.05348941585843397, 0.0817325017819207, 0.0503946286534854, 0.2847373179111362, 0.07900435981733323, 0.07206041311839097, -0.15395111207518533, 0.05310592034282285, 0.04331296231153305] |
707.2972 | The Integral (orbifold) Chow Ring of Toric Deligne-Mumford Stacks | In this paper we study the integral Chow ring of toric Deligne-Mumford
stacks. We prove that the integral Chow ring of a semi-projective toric
Deligne-Mumford stack is isomorphic to the Stanley-Reisner ring of the
associated stacky fan. The integral orbifold Chow ring is also computed. Our
results are illustrated with several examples.
| math.AG | in this paper we study the integral chow ring of toric delignemumford stacks we prove that the integral chow ring of a semiprojective toric delignemumford stack is isomorphic to the stanleyreisner ring of the associated stacky fan the integral orbifold chow ring is also computed our results are illustrated with several examples | [['in', 'this', 'paper', 'we', 'study', 'the', 'integral', 'chow', 'ring', 'of', 'toric', 'delignemumford', 'stacks', 'we', 'prove', 'that', 'the', 'integral', 'chow', 'ring', 'of', 'a', 'semiprojective', 'toric', 'delignemumford', 'stack', 'is', 'isomorphic', 'to', 'the', 'stanleyreisner', 'ring', 'of', 'the', 'associated', 'stacky', 'fan', 'the', 'integral', 'orbifold', 'chow', 'ring', 'is', 'also', 'computed', 'our', 'results', 'are', 'illustrated', 'with', 'several', 'examples']] | [-0.2848875729295497, -0.1261177941923961, -0.146821263165643, 0.10386371774522839, -0.10845210070077044, -0.12970730647122344, -0.1351035797874479, 0.34576153103262186, -0.4221823610938512, -0.10586604035387819, 0.12701814933993424, -0.19618488303743875, -0.1702058411274965, 0.20838732261640522, -0.3009750747587532, -0.09569182467217055, 0.05864930960636299, 0.03180764819710301, -0.0755827675278012, -0.4601159878791525, 0.5045143719762564, -0.00024295211411439456, 0.2323368855107289, 0.03435365555700488, 0.1003400861339357, -0.027352330086824413, -0.01921685488643841, -0.0072526091423172215, -0.24518332258384573, 0.1722812854568474, 0.40497193976233786, -0.03745186836190092, 0.05115844717902991, -0.4438617409278567, -0.051455263478251606, 0.19815880577796355, 0.11709603172046347, -0.025612306154261414, 0.028614575773155175, -0.21773509606002614, 0.1284532050620048, -0.24262789029699677, -0.22916328506723332, -0.11767094258147363, 0.04146008999445117, 0.11060921392457274, -0.17532094772188708, -0.13425741971150273, 0.04739004262508108, 0.20764342777860853, -0.06387420654153594, -0.0647583661081556, -0.15137962439509395, -0.058835227911074, -0.0667509915969836, 0.07553656877896103, 0.18950262106955051, -0.10480708522775856, -0.1472564090285092, 0.34348546237183303, -0.08113676637339477, -0.13593443225209528, 0.04872775807654342, -0.17826609087821382, -0.12659228171329373, 0.23426337387914267, -0.054428567518838324, 0.23856176973248905, 0.0846327648927959, 0.21486496400589553, -0.2279325416132521, 0.010337093150995385, 0.09334106489908524, 0.00644187970409313, 0.1178723654593341, 0.09624071419239044, 0.02112238675293226, 0.2119944307890434, -0.041073228341142215, -0.05879045345892127, -0.417145649687602, -0.24265402999634927, -0.09729989102253547, 0.24441855407964724, -0.13237695788176587, -0.11895078025722447, 0.41752028870038116, 0.07501604259848066, 0.14146331382485536, 0.1338078695206115, 0.29874703739411557, -0.045550513141698994, 0.01852819402343952, 0.019588959421246097, 0.07707697697556935, 0.29187907196151525, -0.08100618422031403, -0.1363855462270574, -0.1072852349249073, 0.3117465754576887] |
707.2973 | Color Transfer in Associated Heavy-Quarkonium Production | We study the production of heavy quarkonium in association with an additional
heavy pair. We argue that important contributions may come from phase space
regions where three heavy fermions are separated by relative velocities much
lower than the speed of light, and to which standard effective field theories
do not apply. In this region, infrared sensitive color exchange is specific to
the presence of the unpaired (anti)quark. This effect vanishes as the motion of
the additional particle becomes relativistic with respect to the pair, and is
completely absent for massless quarks and gluons in the final state.
| hep-ph hep-ex nucl-th | we study the production of heavy quarkonium in association with an additional heavy pair we argue that important contributions may come from phase space regions where three heavy fermions are separated by relative velocities much lower than the speed of light and to which standard effective field theories do not apply in this region infrared sensitive color exchange is specific to the presence of the unpaired antiquark this effect vanishes as the motion of the additional particle becomes relativistic with respect to the pair and is completely absent for massless quarks and gluons in the final state | [['we', 'study', 'the', 'production', 'of', 'heavy', 'quarkonium', 'in', 'association', 'with', 'an', 'additional', 'heavy', 'pair', 'we', 'argue', 'that', 'important', 'contributions', 'may', 'come', 'from', 'phase', 'space', 'regions', 'where', 'three', 'heavy', 'fermions', 'are', 'separated', 'by', 'relative', 'velocities', 'much', 'lower', 'than', 'the', 'speed', 'of', 'light', 'and', 'to', 'which', 'standard', 'effective', 'field', 'theories', 'do', 'not', 'apply', 'in', 'this', 'region', 'infrared', 'sensitive', 'color', 'exchange', 'is', 'specific', 'to', 'the', 'presence', 'of', 'the', 'unpaired', 'antiquark', 'this', 'effect', 'vanishes', 'as', 'the', 'motion', 'of', 'the', 'additional', 'particle', 'becomes', 'relativistic', 'with', 'respect', 'to', 'the', 'pair', 'and', 'is', 'completely', 'absent', 'for', 'massless', 'quarks', 'and', 'gluons', 'in', 'the', 'final', 'state']] | [-0.09340786157396727, 0.29226642336889014, -0.07810476594172495, 0.11984624163026816, -0.04877337501336312, -0.12888850508853025, 0.02757788955272396, 0.35984159380043906, -0.2222649240962316, -0.27451766153003004, 0.005668981342826077, -0.32206481656770114, -0.0062354774977627795, 0.1032023843685069, -0.016257463073773196, -0.023041864501830843, 0.053793895956052024, 0.07262595226872981, -0.06202667791002728, -0.21652238579831787, 0.3664955780025303, 0.009767009406206534, 0.24704887808214143, 0.10850830946463286, 0.04390179363473021, 0.041802739609301705, -0.026250014347432314, -0.00840319978276066, -0.027124784039900537, 0.09140651281827043, 0.158337404980257, 0.01624475672034566, 0.18551825011297868, -0.39141152728080136, -0.186516114481792, 0.1251374888329853, 0.19488830223545126, 0.1383160319570548, -0.0713119042806865, -0.2549938417817514, 0.07597836649487007, -0.1742937474886013, -0.15136641404620305, -0.055296166895975156, -0.0026822750943895314, -0.06074672858902858, -0.28199919511938526, 0.09712133531371064, -0.0012132721894136246, 0.011966061895982046, -0.03554680659531702, -0.15823985061598653, -0.07143428085669491, 0.08888016239567131, 0.12081727173813071, 0.09753026799586861, 0.13297226035621823, -0.20858233704798154, -0.0930408472099255, 0.41266800756998284, -0.10041060048403319, -0.18824909476217688, 0.25386153432761427, -0.17281665300143903, -0.10036541942084573, 0.14367633171802022, 0.19391927426469693, 0.13186879180997044, -0.16759506146874778, 0.06464285859370067, -0.0025915005484346263, 0.1558307441522742, 0.04990173861403594, 0.1252420156445239, 0.25536373799148293, 0.10397167206194598, 0.021904508326413857, 0.13976480347133174, -0.10839180206668746, -0.13153621963388526, -0.3614536360213437, -0.16865528567895754, -0.10502744078655372, 0.0126161093035408, -0.05541407965923559, -0.14208260788726285, 0.3614971725451376, 0.14720042438150896, 0.21241197999105932, -0.05828312956175968, 0.30977331395453017, 0.09985778509932042, 0.07691508940104202, 0.093599356499683, 0.30578437631412114, 0.09927621519612509, 0.09994617840947256, -0.23880935230378791, 0.017091142493732198, 0.06229852715065492] |
707.2974 | Compactness results for the K\"ahler-Ricci flow | We consider the K\"ahler-Ricci flow $\frac{\partial}{\partial t}g_{i\bar{j}}
= g_{i\bar{j}} - R_{i\bar{j}}$ on a compact K\"ahler manifold $M$ with $c_1(M)
> 0$, of complex dimension $k$.
We prove the $\epsilon$-regularity lemma for the K\"ahler-Ricci flow, based
on Moser's iteration. Assume that the Ricci curvature and $\int_M |\rem|^k
dV_t$ are uniformly bounded along the flow. Using the $\epsilon$-regularity
lemma we derive the compactness result for the K\"ahler-Ricci flow. Under our
assumptions, if $k \ge 3$ in addition, using the compactness result we show
that $|\rem| \le C$ holds uniformly along the flow. This means the flow does
not develop any singularities at infinity. We use some ideas of Tian from
\cite{Ti} to prove the smoothing property in that case.
| math.DG | we consider the kahlerricci flow fracpartialpartial tg_ibarj g_ibarj r_ibarj on a compact kahler manifold m with c_1m 0 of complex dimension k we prove the epsilonregularity lemma for the kahlerricci flow based on mosers iteration assume that the ricci curvature and int_m remk dv_t are uniformly bounded along the flow using the epsilonregularity lemma we derive the compactness result for the kahlerricci flow under our assumptions if k ge 3 in addition using the compactness result we show that rem le c holds uniformly along the flow this means the flow does not develop any singularities at infinity we use some ideas of tian from citeti to prove the smoothing property in that case | [['we', 'consider', 'the', 'kahlerricci', 'flow', 'fracpartialpartial', 'tg_ibarj', 'g_ibarj', 'r_ibarj', 'on', 'a', 'compact', 'kahler', 'manifold', 'm', 'with', 'c_1m', '0', 'of', 'complex', 'dimension', 'k', 'we', 'prove', 'the', 'epsilonregularity', 'lemma', 'for', 'the', 'kahlerricci', 'flow', 'based', 'on', 'mosers', 'iteration', 'assume', 'that', 'the', 'ricci', 'curvature', 'and', 'int_m', 'remk', 'dv_t', 'are', 'uniformly', 'bounded', 'along', 'the', 'flow', 'using', 'the', 'epsilonregularity', 'lemma', 'we', 'derive', 'the', 'compactness', 'result', 'for', 'the', 'kahlerricci', 'flow', 'under', 'our', 'assumptions', 'if', 'k', 'ge', '3', 'in', 'addition', 'using', 'the', 'compactness', 'result', 'we', 'show', 'that', 'rem', 'le', 'c', 'holds', 'uniformly', 'along', 'the', 'flow', 'this', 'means', 'the', 'flow', 'does', 'not', 'develop', 'any', 'singularities', 'at', 'infinity', 'we', 'use', 'some', 'ideas', 'of', 'tian', 'from', 'citeti', 'to', 'prove', 'the', 'smoothing', 'property', 'in', 'that', 'case']] | [-0.18696661489175986, 0.05499599566165772, -0.14622063058454338, 0.04353055133617966, -0.08792338919118736, -0.1695096595687102, -0.029461127921455988, 0.35995516298269786, -0.2996245921843823, -0.15529859133271706, 0.14766303223290447, -0.2825028179687689, -0.11401484295708576, 0.18607961556753488, -0.13728251000348893, 0.005872207034068803, 0.07384533681734293, 0.0706165815807051, -0.06147905799810326, -0.2585158118033885, 0.42788660875090434, -0.08725039286676932, 0.21994081219761735, 0.12878858405585764, 0.11930147190933996, 0.018078992255376996, 0.03291072824935394, 0.009094943076855055, -0.2713098394397093, 0.08225692885645441, 0.1860965364009004, 0.09309490826800121, 0.261295679870441, -0.3733798797216473, -0.2512148821433247, 0.16115122923144587, 0.12654192700412953, 0.029825073787597595, -0.05694267503632647, -0.2539409264314195, 0.192161031837006, -0.05618209234887251, -0.21551004068492652, -0.07744379744313105, -0.031159945013415482, 0.07025465104487483, -0.2633349012488637, 0.0664219464848025, 0.1883268076764782, 0.062824787240027, -0.05622970531867058, -0.09513454061622421, -0.08144688993666528, 0.047620153109568894, 0.04901454128924309, 0.07613671278684503, 0.10499742970892435, -0.047879528458536325, -0.023743267892213125, 0.29815595558654795, -0.17706563880805065, -0.2501585176214576, 0.086991936975176, -0.1429060037954952, -0.17940750150484275, 0.07677902382420143, 0.13797589372121297, 0.2279367453539399, -0.015414791106229165, 0.16988899385399203, -0.08678637941678365, 0.11649701967662959, 0.14781900467264844, -0.0551900149849071, 0.03675382463606419, 0.07371466185173227, 0.226725667951676, 0.10258679136340679, -0.042939204834746544, -0.035455172389952674, -0.38006720984251136, -0.1993177174310269, -0.16862296217328143, 0.20472751359718838, -0.17495168445303635, -0.10174390713304833, 0.30895168768862885, 0.06895427924097965, 0.2147065132200994, 0.17508999204814987, 0.23503891713227387, 0.05519180387340451, -0.020605306256415875, 0.24090429748994885, 0.20729706963633093, 0.18779019086138793, 0.1487780442866669, -0.1477751561539696, -0.031016094291030808, 0.19637357759657553] |
707.2975 | Particle Stirring in Turbulent Gas Disks: Including Orbital Oscillations | We describe the diffusion and random velocities of solid particles due to
stochastic forcing by turbulent gas. We include the orbital dynamics of
Keplerian disks, both in-plane epicycles and vertical oscillations. We obtain a
new result for the diffusion of solids. The Schmidt number (ratio of gas to
particle diffusivity) is Sc = 1 + (Omega t_stop)^2, in terms of the particle
stopping time, t_stop, and the orbital frequency, Omega. The standard result,
Sc = 1 + t_stop/t_eddy, in terms of the eddy turnover time, t_eddy, is shown to
be incorrect. The main difference is that Sc rises quadratically, not linearly,
with stopping time. Consequently, particles larger than ~ 10 cm in
protoplanetary disks will suffer less radial diffusion and will settle closer
to the midplane. Such a layer of boulders would be more prone to gravitational
collapse. Our predictions of RMS speeds, vertical scale height and diffusion
coefficients will help interpret numerical simulations. We confirm previous
results for the vertical stirring of particles (scale heights and random
velocities), and add a correction for arbitrary ratios of eddy to orbital
times. The particle layer becomes thinner for t_eddy > 1/Omega, with the
strength of turbulent diffusion held fixed. We use two analytic techniques --
the Hinze-Tchen formalism and the Fokker-Planck equation with velocity
diffusion -- with identical results when the regimes of validity overlap. We
include simple physical arguments for the scaling of our results.
| astro-ph | we describe the diffusion and random velocities of solid particles due to stochastic forcing by turbulent gas we include the orbital dynamics of keplerian disks both inplane epicycles and vertical oscillations we obtain a new result for the diffusion of solids the schmidt number ratio of gas to particle diffusivity is sc 1 omega t_stop2 in terms of the particle stopping time t_stop and the orbital frequency omega the standard result sc 1 t_stopt_eddy in terms of the eddy turnover time t_eddy is shown to be incorrect the main difference is that sc rises quadratically not linearly with stopping time consequently particles larger than 10 cm in protoplanetary disks will suffer less radial diffusion and will settle closer to the midplane such a layer of boulders would be more prone to gravitational collapse our predictions of rms speeds vertical scale height and diffusion coefficients will help interpret numerical simulations we confirm previous results for the vertical stirring of particles scale heights and random velocities and add a correction for arbitrary ratios of eddy to orbital times the particle layer becomes thinner for t_eddy 1omega with the strength of turbulent diffusion held fixed we use two analytic techniques the hinzetchen formalism and the fokkerplanck equation with velocity diffusion with identical results when the regimes of validity overlap we include simple physical arguments for the scaling of our results | [['we', 'describe', 'the', 'diffusion', 'and', 'random', 'velocities', 'of', 'solid', 'particles', 'due', 'to', 'stochastic', 'forcing', 'by', 'turbulent', 'gas', 'we', 'include', 'the', 'orbital', 'dynamics', 'of', 'keplerian', 'disks', 'both', 'inplane', 'epicycles', 'and', 'vertical', 'oscillations', 'we', 'obtain', 'a', 'new', 'result', 'for', 'the', 'diffusion', 'of', 'solids', 'the', 'schmidt', 'number', 'ratio', 'of', 'gas', 'to', 'particle', 'diffusivity', 'is', 'sc', '1', 'omega', 't_stop2', 'in', 'terms', 'of', 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707.2976 | Tate-Shafarevich Groups and Frobenius Fields of Reductions of Elliptic
Curves | Let $\E/\Q$ be a fixed elliptic curve over $\Q$ which does not have complex
multiplication. Assuming the Generalized Riemann Hypothesis, A. C. Cojocaru and
W. Duke have obtained an asymptotic formula for the number of primes $p\le x$
such that the reduction of $\E$ modulo p has a trivial Tate-Shafarevich group.
Recent results of A. C. Cojocaru and C. David lead to a better error term. We
introduce a new argument in the scheme of the proof which gives further
improvement.
| math.NT | let eq be a fixed elliptic curve over q which does not have complex multiplication assuming the generalized riemann hypothesis a c cojocaru and w duke have obtained an asymptotic formula for the number of primes ple x such that the reduction of e modulo p has a trivial tateshafarevich group recent results of a c cojocaru and c david lead to a better error term we introduce a new argument in the scheme of the proof which gives further improvement | [['let', 'eq', 'be', 'a', 'fixed', 'elliptic', 'curve', 'over', 'q', 'which', 'does', 'not', 'have', 'complex', 'multiplication', 'assuming', 'the', 'generalized', 'riemann', 'hypothesis', 'a', 'c', 'cojocaru', 'and', 'w', 'duke', 'have', 'obtained', 'an', 'asymptotic', 'formula', 'for', 'the', 'number', 'of', 'primes', 'ple', 'x', 'such', 'that', 'the', 'reduction', 'of', 'e', 'modulo', 'p', 'has', 'a', 'trivial', 'tateshafarevich', 'group', 'recent', 'results', 'of', 'a', 'c', 'cojocaru', 'and', 'c', 'david', 'lead', 'to', 'a', 'better', 'error', 'term', 'we', 'introduce', 'a', 'new', 'argument', 'in', 'the', 'scheme', 'of', 'the', 'proof', 'which', 'gives', 'further', 'improvement']] | [-0.19651215048621834, 0.03982181990979797, -0.1932861113368913, 0.009556836483103258, -0.06975583508208302, -0.19233742528767497, 0.0736872196789647, 0.2630082675152355, -0.2565230127010081, -0.2709136198470254, 0.05054262057837835, -0.2337156113229597, -0.10550741154275099, 0.2525035189119754, -0.12162505237983516, 0.012009655435880026, 0.044398196021462846, 0.06760574884160801, -0.08826154251697899, -0.32842835252472186, 0.29027426969489933, -0.014035056996228243, 0.19997188343126096, 0.07660836492446654, 0.08049492508081006, 0.033998688953112303, -0.00404001129101272, -0.04060499187570387, -0.1330774350607959, 0.1262295215971262, 0.2496913490747964, 0.09194712087879946, 0.2669160406530639, -0.3264999974771966, -0.19608713058685814, 0.20014039891553514, 0.12062702330266252, -0.006291749524987406, -0.005952606624406245, -0.22101723315355218, 0.16690378007047843, -0.20971771149700622, -0.16602801174833726, -0.06897435726793368, 0.09776781078566003, 0.014144364998813856, -0.31525687003554204, 0.024980160091532234, 0.15884571866258795, 0.12604189523852166, -0.008757265396761122, -0.18381804140445626, 0.004277027907700818, 0.010228543283624781, 0.03658463558136129, 0.13687354877568136, 0.024259025225254856, -0.05557434545415971, -0.12458869369907512, 0.3401207316574859, -0.09865843838678649, -0.18402966753476196, 0.1056603363910575, -0.13588442025637185, -0.12368300762947326, 0.14799436556612267, 0.12271904624584648, 0.12648255780431222, -0.0005974500428563283, 0.20552459686712857, -0.12582035532564695, 0.14918720198473262, 0.106059521574665, -0.047458617419096426, 0.10156228801488508, 0.05609847536241567, 0.05554306762936859, 0.05994513961572752, -0.03724381900220006, 0.026588859778173542, -0.3659336023768525, -0.22737476781562524, -0.13532217129214127, 0.1659777719201592, -0.10483573006292127, -0.16317326808923188, 0.3548189962131778, 0.032673584251308146, 0.19518074602532534, 0.08846820443926126, 0.18332060927778115, 0.1346041428293159, 0.04364039419351123, 0.07271228566259881, 0.11434754991420994, 0.14366196670833928, 0.028337320075715305, -0.1674152426134197, 0.03954435259615428, 0.15530229384010588] |
707.2977 | N=4 Supersymmetric Yang-Mills Multiplet in Non-Adjoint Representations | We formulate a theory for N=4 supersymmetric Yang-Mills multiplet in a
non-adjoint representation R of SO(N) as an important application of our
recently-proposed model for N=1 supersymmetry. This system is obtained by
dimensional reduction from an N=1 supersymmetric Yang-Mills multiplet in
non-adjoint representation in ten dimensions. The consistency with
supersymmetry requires that the non-adjoint representation R with the indices
i, j, ... satisfy the three conditions \eta^{i j} = \delta^{i j}, (T^I)^{i j} =
- (T^I)^{j i} and (T^I)^{[ i j |} (T^I)^{| k ] l} = 0 for the metric \eta^{i j}
and the generators T^I, which are the same as the N=1 case.
| hep-th | we formulate a theory for n4 supersymmetric yangmills multiplet in a nonadjoint representation r of son as an important application of our recentlyproposed model for n1 supersymmetry this system is obtained by dimensional reduction from an n1 supersymmetric yangmills multiplet in nonadjoint representation in ten dimensions the consistency with supersymmetry requires that the nonadjoint representation r with the indices i j satisfy the three conditions etai j deltai j tii j tij i and ti i j ti k l 0 for the metric etai j and the generators ti which are the same as the n1 case | [['we', 'formulate', 'a', 'theory', 'for', 'n4', 'supersymmetric', 'yangmills', 'multiplet', 'in', 'a', 'nonadjoint', 'representation', 'r', 'of', 'son', 'as', 'an', 'important', 'application', 'of', 'our', 'recentlyproposed', 'model', 'for', 'n1', 'supersymmetry', 'this', 'system', 'is', 'obtained', 'by', 'dimensional', 'reduction', 'from', 'an', 'n1', 'supersymmetric', 'yangmills', 'multiplet', 'in', 'nonadjoint', 'representation', 'in', 'ten', 'dimensions', 'the', 'consistency', 'with', 'supersymmetry', 'requires', 'that', 'the', 'nonadjoint', 'representation', 'r', 'with', 'the', 'indices', 'i', 'j', 'satisfy', 'the', 'three', 'conditions', 'etai', 'j', 'deltai', 'j', 'tii', 'j', 'tij', 'i', 'and', 'ti', 'i', 'j', 'ti', 'k', 'l', '0', 'for', 'the', 'metric', 'etai', 'j', 'and', 'the', 'generators', 'ti', 'which', 'are', 'the', 'same', 'as', 'the', 'n1', 'case']] | [-0.11157981800248049, 0.13647238339080087, 0.02228387104993572, 0.007045289724875166, -0.008124707984929305, -0.2258669703115462, -0.03803539429719997, 0.31405750500532437, -0.13781883337591982, -0.2831848441262026, 0.07267177370210577, -0.2916532266809016, -0.13645888408836054, 0.0336038931433292, -0.03230781832766928, -0.014829525866602756, -0.009909559707679995, 0.0237043520782561, -0.07771953900240133, -0.25323545440499273, 0.27350134439101176, -0.024799533340395714, 0.21528829532920155, -0.02849194527560921, 0.07332441205995119, 0.04927837824192354, 0.005642022909026365, -0.005641409756653771, -0.16408064789698537, 0.14438497181209659, 0.2587398153406625, 0.09183966583211203, 0.13583167842993207, -0.3681947685093904, -0.17928094592430077, 0.049180008471012115, 0.14136753891290602, 0.06496557262037139, 0.05503114557834532, -0.23591409688007695, 0.07221561427494246, -0.19021817801368177, -0.13117932867524879, -0.06597481504538838, 0.138445698142964, -0.11013309554938151, -0.3523784160842093, 0.03896511175577073, 0.08437619600635098, 0.11522862192585456, -0.04091905259850378, -0.18054385262669767, -0.14703265255155537, 0.020896348405548618, 0.05516069648640078, 0.0796863956338897, 0.04311406664664344, -0.15809882787029242, -0.13606278612088335, 0.3748708992664303, -0.1015082287141217, -0.20369335485394208, 0.1618088980381168, -0.09219835338667415, -0.22286836662310727, 0.0764675753129342, 0.010595877189189196, 0.16729344300241494, -0.06525463219708288, 0.28085532666502366, -0.07986995437638644, 0.11270940719096333, 0.06855927485193374, 0.012692350955984118, 0.15983528674494626, 0.0757415775026727, 0.06258629445860885, 0.05695561617042641, -0.05229418667755565, -0.012352342612813321, -0.4112046827010962, -0.22720779364510457, -0.16975531944938535, 0.1314979809032259, -0.12202043043852223, -0.06496262229142749, 0.33186918646762414, 0.10472727721564148, 0.16866773407792254, 0.037734681304439674, 0.1358710306183416, 0.1083146536802258, 0.022388544464626407, 0.1101741176959821, 0.18305898663036677, 0.18000322108261516, 0.1318190088875744, -0.2216149586067554, -0.17146340427606613, 0.21701009475569033] |
707.2978 | Raman Scattered O VI $\lambda$ 6825 and the Accretion Disk Emission
Model in the Symbiotic Stars V1016 Cygni and HM Sagittae | We present the high resolution spectra of the D type symbiotic stars V1016
Cygni and HM Sagittae obtained with the Bohyunsan Optical Echelle Spectrograph
(BOES), and investigate the double-peaked asymmetric profiles of the Raman
scattered O VI 6825. By adopting a wind accretion disk model, we assume that
the O VI emission region is described by a Keplerian thin disk. The Raman
scattering occurs in a neutral region near the giant, taking in the form of a
slow stellar wind, part of which is ionized by the strong UV radiation from the
hot white dwarf. Using a Monte Carlo technique, we compute the line profiles
that are modulated by the slow spherical stellar wind from the giant component
with the ionization front approximated by a hyperboloid. In order to account
for the asymmetry and the existence of a central dip in the profiles, we add an
O VI resonance scattering region between the hot white dwarf and the giant star
which hinders the incidence of slightly blue O VI photons upon the H I region.
Overall good fits to the observed data are obtained from our model, which lends
support to the accretion disk emission model in these objects. The best fitting
parameters for V1016 Cyg are $v_o=30{\rm km s^{-1}}$,
$v_\infty=11{\rm km s^{-1}}$, and $v_{c}=10{\rm km s^{-1}}$, where $v_o$,
$v_\infty$ and $v_{c}$ are the velocity of the outer disk rim, the terminal
velocity of the giant wind, and the velocity component of the resonance
scattering O VI region along the binary axis, respectively. Similar fitting
parameters $v_o=27{\rm km s^{-1}}$, $v_\infty=10{\rm km s^{-1}}$ and
$v_{c}=9{\rm km s^{-1}}$ are obtained for HM Sge. We also investigate the
effect of a hot spot in a disk that is well known in accretion disks in
cataclysmic variables.
| astro-ph | we present the high resolution spectra of the d type symbiotic stars v1016 cygni and hm sagittae obtained with the bohyunsan optical echelle spectrograph boes and investigate the doublepeaked asymmetric profiles of the raman scattered o vi 6825 by adopting a wind accretion disk model we assume that the o vi emission region is described by a keplerian thin disk the raman scattering occurs in a neutral region near the giant taking in the form of a slow stellar wind part of which is ionized by the strong uv radiation from the hot white dwarf using a monte carlo technique we compute the line profiles that are modulated by the slow spherical stellar wind from the giant component with the ionization front approximated by a hyperboloid in order to account for the asymmetry and the existence of a central dip in the profiles we add an o vi resonance scattering region between the hot white dwarf and the giant star which hinders the incidence of slightly blue o vi photons upon the h i region overall good fits to the observed data are obtained from our model which lends support to the accretion disk emission model in these objects the best fitting parameters for v1016 cyg are v_o30rm km s1 v_infty11rm km s1 and v_c10rm km s1 where v_o v_infty and v_c are the velocity of the outer disk rim the terminal velocity of the giant wind and the velocity component of the resonance scattering o vi region along the binary axis respectively similar fitting parameters v_o27rm km s1 v_infty10rm km s1 and v_c9rm km s1 are obtained for hm sge we also investigate the effect of a hot spot in a disk that is well known in accretion disks in cataclysmic variables | [['we', 'present', 'the', 'high', 'resolution', 'spectra', 'of', 'the', 'd', 'type', 'symbiotic', 'stars', 'v1016', 'cygni', 'and', 'hm', 'sagittae', 'obtained', 'with', 'the', 'bohyunsan', 'optical', 'echelle', 'spectrograph', 'boes', 'and', 'investigate', 'the', 'doublepeaked', 'asymmetric', 'profiles', 'of', 'the', 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707.2979 | High Spatial Resolution Observations of Two Young Protostars in the R
Corona Australis Region | We present multi-wavelength, high spatial resolution imaging of the IRS 7
region in the R Corona Australis molecular cloud. Our observations include 1.1
mm continuum and HCO^+ J = $3 \to 2$ images from the SMA, ^{12}CO J = $3 \to 2$
outflow maps from the DesertStar heterodyne array receiver on the HHT, 450
$\mu$m and 850 $\mu$m continuum images from SCUBA, and archival Spitzer IRAC
and MIPS 24 \micron images. The accurate astrometry of the IRAC images allow us
to identify IRS 7 with the cm source VLA 10W (IRS 7A) and the X-ray source X_W.
The SMA 1.1 mm image reveals two compact continuum sources which are also
distinguishable at 450 $\mu$m. SMA 1 coincides with X-ray source CXOU
J190156.4-365728 and VLA cm source 10E (IRS 7B) and is seen in the IRAC and
MIPS images. SMA 2 has no infrared counterpart but coincides with cm source VLA
9. Spectral energy distributions constructed from SMA, SCUBA and Spitzer data
yield bolometric temperatures of 83 K for SMA 1 and $\leq$70 K for SMA 2. These
temperatures along with the submillimeter to total luminosity ratios indicate
that SMA 2 is a Class 0 protostar, while SMA 1 is a Class 0/Class I
transitional object (L=$17\pm6$ \Lsun). The ^{12}CO J = $3 \to 2$ outflow map
shows one major and possibly several smaller outflows centered on the IRS 7
region, with masses and energetics consistent with previous work. We identify
the Class 0 source SMA 2/VLA 9 as the main driver of this outflow. The complex
and clumpy spatial and velocity distribution of the HCO^+ J = $3 \to 2$
emission is not consistent with either bulk rotation, or any known molecular
outflow activity.
| astro-ph | we present multiwavelength high spatial resolution imaging of the irs 7 region in the r corona australis molecular cloud our observations include 11 mm continuum and hco j 3 to 2 images from the sma 12co j 3 to 2 outflow maps from the desertstar heterodyne array receiver on the hht 450 mum and 850 mum continuum images from scuba and archival spitzer irac and mips 24 micron images the accurate astrometry of the irac images allow us to identify irs 7 with the cm source vla 10w irs 7a and the xray source x_w the sma 11 mm image reveals two compact continuum sources which are also distinguishable at 450 mum sma 1 coincides with xray source cxou j1901564365728 and vla cm source 10e irs 7b and is seen in the irac and mips images sma 2 has no infrared counterpart but coincides with cm source vla 9 spectral energy distributions constructed from sma scuba and spitzer data yield bolometric temperatures of 83 k for sma 1 and leq70 k for sma 2 these temperatures along with the submillimeter to total luminosity ratios indicate that sma 2 is a class 0 protostar while sma 1 is a class 0class i transitional object l17pm6 lsun the 12co j 3 to 2 outflow map shows one major and possibly several smaller outflows centered on the irs 7 region with masses and energetics consistent with previous work we identify the class 0 source sma 2vla 9 as the main driver of this outflow the complex and clumpy spatial and velocity distribution of the hco j 3 to 2 emission is not consistent with either bulk rotation or any known molecular outflow activity | [['we', 'present', 'multiwavelength', 'high', 'spatial', 'resolution', 'imaging', 'of', 'the', 'irs', '7', 'region', 'in', 'the', 'r', 'corona', 'australis', 'molecular', 'cloud', 'our', 'observations', 'include', '11', 'mm', 'continuum', 'and', 'hco', 'j', '3', 'to', '2', 'images', 'from', 'the', 'sma', '12co', 'j', '3', 'to', '2', 'outflow', 'maps', 'from', 'the', 'desertstar', 'heterodyne', 'array', 'receiver', 'on', 'the', 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707.298 | Measurement of the CP-Violating Asymmetries in B0 -> KS pi0 and of the
Branching Fraction of B0 -> K0 pi0 | We present a measurement of the time-dependent CP-violating asymmetries in
$B^0 \to K^0_{\scriptscriptstyle S}\pi^0$ decays based on 383 million
$\Upsilon(4S)\to B\kern 0.18em\bar{\kern -0.18em B}$ events collected by the
\mbox{\slshape B\kern-0.1em{\smaller A}\kern-0.1em B\kern-0.1em{\smaller
A\kern-0.2em R}} experiment at the PEP-II asymmetric-energy $B$ Factory at
SLAC. We measure the direct CP-violating asymmetry $C_{K^0_{\scriptscriptstyle
S}\pi^0} = 0.24 \pm 0.15 \pm 0.03$ and the CP-violating asymmetry in the
interference between mixing and decay $S_{K^0_{\scriptscriptstyle S}\pi^0} =
0.40 \pm 0.23 \pm 0.03$, where the first errors are statistical and the second
are systematic. On the same sample, we measure the decay branching fraction,
obtaining ${\cal B}(B^0 \to K^0\pi^0)= (10.3 \pm 0.7 \pm 0.6)\times 10^{-6}$.
| hep-ex | we present a measurement of the timedependent cpviolating asymmetries in b0 to k0_scriptscriptstyle spi0 decays based on 383 million upsilon4sto bkern 018embarkern 018em b events collected by the mboxslshape bkern01emsmaller akern01em bkern01emsmaller akern02em r experiment at the pepii asymmetricenergy b factory at slac we measure the direct cpviolating asymmetry c_k0_scriptscriptstyle spi0 024 pm 015 pm 003 and the cpviolating asymmetry in the interference between mixing and decay s_k0_scriptscriptstyle spi0 040 pm 023 pm 003 where the first errors are statistical and the second are systematic on the same sample we measure the decay branching fraction obtaining cal bb0 to k0pi0 103 pm 07 pm 06times 106 | [['we', 'present', 'a', 'measurement', 'of', 'the', 'timedependent', 'cpviolating', 'asymmetries', 'in', 'b0', 'to', 'k0_scriptscriptstyle', 'spi0', 'decays', 'based', 'on', '383', 'million', 'upsilon4sto', 'bkern', '018embarkern', '018em', 'b', 'events', 'collected', 'by', 'the', 'mboxslshape', 'bkern01emsmaller', 'akern01em', 'bkern01emsmaller', 'akern02em', 'r', 'experiment', 'at', 'the', 'pepii', 'asymmetricenergy', 'b', 'factory', 'at', 'slac', 'we', 'measure', 'the', 'direct', 'cpviolating', 'asymmetry', 'c_k0_scriptscriptstyle', 'spi0', '024', 'pm', '015', 'pm', '003', 'and', 'the', 'cpviolating', 'asymmetry', 'in', 'the', 'interference', 'between', 'mixing', 'and', 'decay', 's_k0_scriptscriptstyle', 'spi0', '040', 'pm', '023', 'pm', '003', 'where', 'the', 'first', 'errors', 'are', 'statistical', 'and', 'the', 'second', 'are', 'systematic', 'on', 'the', 'same', 'sample', 'we', 'measure', 'the', 'decay', 'branching', 'fraction', 'obtaining', 'cal', 'bb0', 'to', 'k0pi0', '103', 'pm', '07', 'pm', '06times', '106']] | [-0.14812433990724475, 0.20493652119111377, -0.05301008834413171, 0.03139797461589853, 0.025432625487085105, -0.14484071785367084, 0.12787413651697807, 0.26755135840492195, -0.14096030289108313, -0.34402543878707204, -0.002894928700909995, -0.5180961085320677, 0.14186968944641282, 0.130410613826684, 0.022107811671799246, 0.07554460322321618, 0.05357536397539803, -0.08002143177809645, -0.07931066006060364, -0.12498509002740955, 0.04910486800035516, 0.007313816215915298, 0.22982325333902992, 0.03431244630782494, 0.009849319879860772, -0.033524542441139525, -0.029043743522494163, -0.15273964058752487, -0.2797302064368302, -0.05451941503284192, 0.16623996289501203, 0.07772272114542503, 0.09541669197932102, -0.2359998484581649, 0.14768662385063844, 0.21019927866404278, 0.1428510923553439, -0.08384848910483342, -0.01265632061206383, -0.4577794797646189, 0.1830364839779665, -0.20285202749525605, -0.0006335346261039376, 0.05585504789244456, 0.13514402996097663, -0.16129128926985184, -0.430090953948573, 0.23555399198989266, -0.18813823548697153, 0.13129569688423093, 0.044467418802703176, -0.3081259840016606, -0.0181461136462619, -0.06783129859860372, -0.006949840491022733, 0.16942480621063738, 0.18339211667788405, 0.05238208781421474, -0.09971142201051478, 0.3683566914722143, -0.1330397361279149, -0.048319972906876535, 0.02394225138908668, -0.3211775624862357, -0.16010365965188417, 0.1908677567126573, 0.26523369798454843, 0.05300085101665441, -0.20251170435504426, 0.06706818569625628, 6.068621771138848e-05, 0.21633424990566322, 0.09468383491672214, 0.0607860533473109, 0.18766234497295567, 0.16620389891119258, -0.014655046784364193, -0.021934099757627955, -0.22302640100050428, 0.051788867139302704, -0.3934823988973009, -0.09310254715021374, -0.018837684937255475, 0.1481628242554595, -0.09118788574358282, 0.0020639712501823613, 0.3100738331530858, 0.05972096023773684, 0.3031697711518523, 0.023577065647294906, 0.2579916181970722, 0.044218118355645646, -0.011569484866007222, 0.05349800285648157, 0.32814357061734767, 0.21460435867707417, 0.16118672492267402, -0.3022700785469937, 0.02831055288139767, -0.036619812892116965] |
707.2981 | Exclusive branching fraction measurements of semileptonic tau decays
into three charged hadrons, $\tau^- \to \phi \pi^- \nu_\tau$ and $\tau^- \to
\phi K^- \nu_\tau$ | Using a data sample corresponding to an integrated luminosity of 342
$fb^{-1}$ collected with the BABAR detector at the SLAC PEP-II
electron-positron storage ring operating at a center-of-mass energy near 10.58
GeV, we measure ${\cal{B}} (\tau^- \to \pi^- \pi^- \pi^+ \nu_\tau) = (8.83 \pm
0.01 \pm 0.13) %$, ${\cal{B}} (\tau^- \to K^- \pi^- \pi^+ \nu_\tau) = (0.273\pm
0.002\pm 0.009)%$, ${\cal{B}} (\tau^- \to K^- \pi^- K^+ \nu_\tau) = (0.1346\pm
0.0010 \pm 0.0036)%$ and ${\cal{B}} (\tau^- \to K^- K^- K^+ \nu_\tau) =
(1.58\pm 0.13 \pm 0.12)\times 10^{-5}$, where the uncertainties are statistical
and systematic, respectively. Events where the $\pi^+\pi^-$ pair is consistent
with coming from a $K^0_S$ are excluded. These are significant improvements
over previous measurements, with the ${\cal{B}} (\tau^- \to K^- K^- K^+
\nu_\tau)$ result being the first resonant plus non-resonant measurement of
this mode. We also report a first measurement of ${\cal{B}} (\tau^- \to
\phi\pi^- \nu_\tau) = (3.42\pm 0.55 \pm 0.25)\times 10^{-5}$ and a new
measurement of ${\cal{B}} (\tau^- \to \phi K^- \nu_\tau) = (3.39\pm 0.20 \pm
0.28)\times 10^{-5}$.
| hep-ex | using a data sample corresponding to an integrated luminosity of 342 fb1 collected with the babar detector at the slac pepii electronpositron storage ring operating at a centerofmass energy near 1058 gev we measure calb tau to pi pi pi nu_tau 883 pm 001 pm 013 calb tau to k pi pi nu_tau 0273pm 0002pm 0009 calb tau to k pi k nu_tau 01346pm 00010 pm 00036 and calb tau to k k k nu_tau 158pm 013 pm 012times 105 where the uncertainties are statistical and systematic respectively events where the pipi pair is consistent with coming from a k0_s are excluded these are significant improvements over previous measurements with the calb tau to k k k nu_tau result being the first resonant plus nonresonant measurement of this mode we also report a first measurement of calb tau to phipi nu_tau 342pm 055 pm 025times 105 and a new measurement of calb tau to phi k nu_tau 339pm 020 pm 028times 105 | [['using', 'a', 'data', 'sample', 'corresponding', 'to', 'an', 'integrated', 'luminosity', 'of', '342', 'fb1', 'collected', 'with', 'the', 'babar', 'detector', 'at', 'the', 'slac', 'pepii', 'electronpositron', 'storage', 'ring', 'operating', 'at', 'a', 'centerofmass', 'energy', 'near', '1058', 'gev', 'we', 'measure', 'calb', 'tau', 'to', 'pi', 'pi', 'pi', 'nu_tau', '883', 'pm', '001', 'pm', '013', 'calb', 'tau', 'to', 'k', 'pi', 'pi', 'nu_tau', '0273pm', '0002pm', '0009', 'calb', 'tau', 'to', 'k', 'pi', 'k', 'nu_tau', '01346pm', '00010', 'pm', '00036', 'and', 'calb', 'tau', 'to', 'k', 'k', 'k', 'nu_tau', '158pm', '013', 'pm', '012times', '105', 'where', 'the', 'uncertainties', 'are', 'statistical', 'and', 'systematic', 'respectively', 'events', 'where', 'the', 'pipi', 'pair', 'is', 'consistent', 'with', 'coming', 'from', 'a', 'k0_s', 'are', 'excluded', 'these', 'are', 'significant', 'improvements', 'over', 'previous', 'measurements', 'with', 'the', 'calb', 'tau', 'to', 'k', 'k', 'k', 'nu_tau', 'result', 'being', 'the', 'first', 'resonant', 'plus', 'nonresonant', 'measurement', 'of', 'this', 'mode', 'we', 'also', 'report', 'a', 'first', 'measurement', 'of', 'calb', 'tau', 'to', 'phipi', 'nu_tau', '342pm', '055', 'pm', '025times', '105', 'and', 'a', 'new', 'measurement', 'of', 'calb', 'tau', 'to', 'phi', 'k', 'nu_tau', '339pm', '020', 'pm', '028times', '105']] | [-0.1768938368878952, 0.22603120439683302, -0.05122643737476083, -0.0002789289419409595, -0.024112095185437627, -0.1642199193887837, 0.13871699660026196, 0.2989097452144834, -0.20357334772360663, -0.31157916207809616, -0.07345281936717514, -0.4599119132926947, 0.13342416232534318, 0.1490167691387071, 0.06530939880169079, 0.08223234714727991, 0.08251613957064721, 0.028072277699962636, -0.06715313807539523, -0.15464690282846552, 0.049860707077468876, 0.043399939519836554, 0.14157220389534825, 0.021692864408221425, -0.0009014620976168898, -0.04590379212440664, -0.03605547249633996, -0.1784676829488547, -0.2783422100127828, -0.03385889105634363, 0.26972388099920286, 0.042756955237334145, 0.05767494033656637, -0.22666744491698984, 0.06872563581630776, 0.2090744298725843, 0.14163989655355202, -0.11969012051638027, 0.07926296405612102, -0.41494023042754563, 0.2791823511707443, -0.1726638338281007, -0.014562724448469337, 0.05429874679450936, 0.14616489168396515, -0.19087599652312412, -0.42748745550884854, 0.14351533491387697, -0.07188342977315187, 0.15187794636769952, -0.005956368144486274, -0.3431097740407656, 0.0033655314900782668, -0.07390247802603754, 0.06883665676600052, 0.23380134542564024, 0.16036055851845613, 0.028414724926652882, -0.11359767389301022, 0.37340460692110905, -0.1149568914515379, -0.056791822025198724, 0.07094208248065714, -0.23290867850042973, -0.10460841213647701, 0.27237460499959465, 0.20130093117897352, 0.05170219759397869, -0.20672758018503648, 0.10060192075671474, -0.028526861727520635, 0.2289140218776014, 0.08982460657606207, 0.03183824182311191, 0.1680977957211199, 0.15058189283620235, 0.017288865274536023, -0.017085822358067278, -0.22228250535841607, 0.08287573314295445, -0.40305886269087277, -0.12195092912386113, -0.021360626401301604, 0.1897322624344143, -0.06879037891080252, 0.030416974661535808, 0.28151505383297426, 0.021911839986053484, 0.3398134900209836, 0.028709107497393867, 0.2679785290744769, 0.08412648482127351, -0.005423771804699651, 0.07953514412113265, 0.2352330670750971, 0.2130784584103223, 0.09896590046605237, -0.3001806499492495, -0.03477171576092656, -0.06937564376894903] |
707.2982 | LISA detections of massive black hole inspirals: parameter extraction
errors due to inaccurate template waveforms | The planned Laser Interferometer Space Antenna (LISA) is expected to detect
the inspiral and merger of massive black hole binaries (MBHBs) at z <~ 5 with
signal-to-noise ratios (SNRs) of hundreds to thousands. Because of these high
SNRs, and because these SNRs accrete over periods of weeks to months, it should
be possible to extract the physical parameters of these systems with high
accuracy; for instance, for a ~ 10^6 Msun MBHBs at z = 1 it should be possible
to determine the two masses to ~ 0.1% and the sky location to ~ 1 degree.
However, those are just the errors due to noise: there will be additional
"theoretical" errors due to inaccuracies in our best model waveforms, which are
still only approximate. The goal of this paper is to estimate the typical
magnitude of these theoretical errors. We develop mathematical tools for this
purpose, and apply them to a somewhat simplified version of the MBHB problem,
in which we consider just the inspiral part of the waveform and neglect
spin-induced precession, eccentricity, and PN amplitude corrections. For this
simplified version, we estimate that theoretical uncertainties in sky position
will typically be ~ 1 degree, i.e., comparable to the statistical uncertainty.
For the mass and spin parameters, our results suggest that while theoretical
errors will be rather small absolutely, they could still dominate over
statistical errors (by roughly an order of magnitude) for the strongest
sources. The tools developed here should be useful for estimating the magnitude
of theoretical errors in many other problems in gravitational-wave astronomy.
| gr-qc | the planned laser interferometer space antenna lisa is expected to detect the inspiral and merger of massive black hole binaries mbhbs at z 5 with signaltonoise ratios snrs of hundreds to thousands because of these high snrs and because these snrs accrete over periods of weeks to months it should be possible to extract the physical parameters of these systems with high accuracy for instance for a 106 msun mbhbs at z 1 it should be possible to determine the two masses to 01 and the sky location to 1 degree however those are just the errors due to noise there will be additional theoretical errors due to inaccuracies in our best model waveforms which are still only approximate the goal of this paper is to estimate the typical magnitude of these theoretical errors we develop mathematical tools for this purpose and apply them to a somewhat simplified version of the mbhb problem in which we consider just the inspiral part of the waveform and neglect spininduced precession eccentricity and pn amplitude corrections for this simplified version we estimate that theoretical uncertainties in sky position will typically be 1 degree ie comparable to the statistical uncertainty for the mass and spin parameters our results suggest that while theoretical errors will be rather small absolutely they could still dominate over statistical errors by roughly an order of magnitude for the strongest sources the tools developed here should be useful for estimating the magnitude of theoretical errors in many other problems in gravitationalwave astronomy | [['the', 'planned', 'laser', 'interferometer', 'space', 'antenna', 'lisa', 'is', 'expected', 'to', 'detect', 'the', 'inspiral', 'and', 'merger', 'of', 'massive', 'black', 'hole', 'binaries', 'mbhbs', 'at', 'z', '5', 'with', 'signaltonoise', 'ratios', 'snrs', 'of', 'hundreds', 'to', 'thousands', 'because', 'of', 'these', 'high', 'snrs', 'and', 'because', 'these', 'snrs', 'accrete', 'over', 'periods', 'of', 'weeks', 'to', 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707.2983 | Excitonic Effects in the Optical Spectra of Graphene Nanoribbons | We present a first-principles calculation of the optical properties of
armchair-edged graphene nanoribbons (AGNRs) with many-electron effects
included. The reduced dimensionality of the AGNRs gives rise to an enhanced
electron-hole binding energy for both bright and dark exciton states (0.8-1.4
eV for GNRs with width w ~ 1.2 nm) and dramatically changes the optical spectra
owing to a near complete transfer of oscillator strength to the exciton states
from the continuum transitions. The characteristics of the excitons of the
three distinct families of AGNRs are compared and discussed. The enhanced
excitonic effects found here are expected to be of importance in optoelectronic
applications of graphene-based nanostructures.
| cond-mat.mes-hall | we present a firstprinciples calculation of the optical properties of armchairedged graphene nanoribbons agnrs with manyelectron effects included the reduced dimensionality of the agnrs gives rise to an enhanced electronhole binding energy for both bright and dark exciton states 0814 ev for gnrs with width w 12 nm and dramatically changes the optical spectra owing to a near complete transfer of oscillator strength to the exciton states from the continuum transitions the characteristics of the excitons of the three distinct families of agnrs are compared and discussed the enhanced excitonic effects found here are expected to be of importance in optoelectronic applications of graphenebased nanostructures | [['we', 'present', 'a', 'firstprinciples', 'calculation', 'of', 'the', 'optical', 'properties', 'of', 'armchairedged', 'graphene', 'nanoribbons', 'agnrs', 'with', 'manyelectron', 'effects', 'included', 'the', 'reduced', 'dimensionality', 'of', 'the', 'agnrs', 'gives', 'rise', 'to', 'an', 'enhanced', 'electronhole', 'binding', 'energy', 'for', 'both', 'bright', 'and', 'dark', 'exciton', 'states', '0814', 'ev', 'for', 'gnrs', 'with', 'width', 'w', '12', 'nm', 'and', 'dramatically', 'changes', 'the', 'optical', 'spectra', 'owing', 'to', 'a', 'near', 'complete', 'transfer', 'of', 'oscillator', 'strength', 'to', 'the', 'exciton', 'states', 'from', 'the', 'continuum', 'transitions', 'the', 'characteristics', 'of', 'the', 'excitons', 'of', 'the', 'three', 'distinct', 'families', 'of', 'agnrs', 'are', 'compared', 'and', 'discussed', 'the', 'enhanced', 'excitonic', 'effects', 'found', 'here', 'are', 'expected', 'to', 'be', 'of', 'importance', 'in', 'optoelectronic', 'applications', 'of', 'graphenebased', 'nanostructures']] | [-0.1172603138700305, 0.16040632403358662, -0.014300022734927812, 0.03931260453537107, 0.02856886379775547, -0.14896314705588987, 0.0640418924213875, 0.45977488252378645, -0.23897438389027403, -0.3040040150462162, -0.05498304590693719, -0.32412424701199466, -0.1079645904013887, 0.18401137993537953, 0.045423241797834635, 0.029595825120451905, 0.065520068635011, -0.1257150072560069, -0.06373144148715905, -0.16643859866474356, 0.24753260039946154, 0.040869063254268395, 0.289594866029386, 0.16147098464536525, -0.01201887662921633, -0.02036978168457392, 0.08128940885265669, -0.009107962711935952, -0.17465528412943795, 0.1641166814986112, 0.26525996403679963, -0.1364521273899646, 0.22388424557811093, -0.42833455180128416, -0.18914681161265998, 0.025814882807788396, 0.1684083556224193, 0.1895861250082297, -0.04148820603177661, -0.3050152512710719, 0.055841739520075775, -0.12396823864962374, -0.12461576268875173, -0.04341464023150149, 0.042894159922642366, 0.03136522951314137, -0.198961299781998, 0.07940126455255918, -0.0038102442620410806, 0.017168334557417047, -0.11197075336461976, -0.1911005895135791, -0.13545966954635721, 0.05571888221339101, 0.002582324172059695, -0.05203797643383344, 0.21766185435865607, -0.16339225240406535, -0.14054807337621847, 0.4257448982269991, -0.053470641356848536, -0.07459981032159357, 0.15556051551497407, -0.11769053171433154, -0.02551232125787508, 0.2233303998508269, 0.10758778310292179, 0.0919580973374347, -0.09471219183788412, 0.06191996291024788, 0.0465955236535852, 0.18096799230469124, 0.04737854626949965, 0.22804451693026792, 0.2125743974975887, 0.1566664016406451, 0.026698943524665775, 0.14014074490959977, -0.11544688741366069, -0.017676948951113793, -0.2127882666708458, -0.1693862357664676, -0.19537408383829252, 0.10337055521529345, -0.048617692224797796, -0.20145476039587742, 0.502644455902988, 0.11485190253172602, 0.18716957404145174, -0.023779476868609588, 0.20003382740985778, 0.16550980573076576, 0.07304712444366444, -0.033225366570765066, 0.2935871664257277, 0.2133082369697236, 0.07925927941465662, -0.3217759713685761, -0.004007489973169175, -0.035281682163033457] |
707.2984 | Canonical lifts of the Johnson homomorphisms to the Torelli groupoid | We prove that every trivalent marked bordered fatgraph comes equipped with a
canonical generalized Magnus expansion in the sense of Kawazumi. This Magnus
expansion is used to give canonical lifts of the higher Johnson homomorphisms
$\tau_m$, for $m\geq 1$, to the Torelli groupoid, and we provide a recursive
combinatorial formula for tensor representatives of these lifts. In particular,
we give an explicit 1-cocycle in the dual fatgraph complex which lifts $\tau_2$
and thus answer affirmatively a question of Morita-Penner. To illustrate our
techniques for calculating higher Johnson homomorphisms in general, we give
explicit examples calculating $\tau_m$, for $m\leq 3$.
| math.GT | we prove that every trivalent marked bordered fatgraph comes equipped with a canonical generalized magnus expansion in the sense of kawazumi this magnus expansion is used to give canonical lifts of the higher johnson homomorphisms tau_m for mgeq 1 to the torelli groupoid and we provide a recursive combinatorial formula for tensor representatives of these lifts in particular we give an explicit 1cocycle in the dual fatgraph complex which lifts tau_2 and thus answer affirmatively a question of moritapenner to illustrate our techniques for calculating higher johnson homomorphisms in general we give explicit examples calculating tau_m for mleq 3 | [['we', 'prove', 'that', 'every', 'trivalent', 'marked', 'bordered', 'fatgraph', 'comes', 'equipped', 'with', 'a', 'canonical', 'generalized', 'magnus', 'expansion', 'in', 'the', 'sense', 'of', 'kawazumi', 'this', 'magnus', 'expansion', 'is', 'used', 'to', 'give', 'canonical', 'lifts', 'of', 'the', 'higher', 'johnson', 'homomorphisms', 'tau_m', 'for', 'mgeq', '1', 'to', 'the', 'torelli', 'groupoid', 'and', 'we', 'provide', 'a', 'recursive', 'combinatorial', 'formula', 'for', 'tensor', 'representatives', 'of', 'these', 'lifts', 'in', 'particular', 'we', 'give', 'an', 'explicit', '1cocycle', 'in', 'the', 'dual', 'fatgraph', 'complex', 'which', 'lifts', 'tau_2', 'and', 'thus', 'answer', 'affirmatively', 'a', 'question', 'of', 'moritapenner', 'to', 'illustrate', 'our', 'techniques', 'for', 'calculating', 'higher', 'johnson', 'homomorphisms', 'in', 'general', 'we', 'give', 'explicit', 'examples', 'calculating', 'tau_m', 'for', 'mleq', '3']] | [-0.16204872627609543, 0.09390304174540892, -0.0732924646260787, 0.1183871029334485, -0.11082681944137629, -0.14753588556540104, 0.01579372559636071, 0.3257351901610287, -0.3335489509817289, -0.2187973119375505, 0.04048850776019449, -0.24134453591339441, -0.19722850016337268, 0.20613821020482906, -0.16723811715765266, -0.0716009652812262, 0.05888605154623106, 0.06201169521777121, -0.14793256824063694, -0.27808985269951575, 0.3502549626864493, -0.013610742664278239, 0.15825992723812862, 0.08199418396498932, 0.147465809205623, 0.018459470852335194, -0.04092049972173207, -0.03941653545337672, -0.23982171387667353, 0.1549116063729993, 0.32482556660412526, 0.06792315470805506, 0.17045920530847292, -0.40401953306109695, -0.0915182168566983, 0.16652522252264376, 0.11990184258498555, 0.05862678296041998, -0.02373384662704276, -0.2212881741674655, 0.12349404288160054, -0.18530859888236664, -0.13520364573567498, -0.14858145246814405, 0.0929230530841314, -0.032200838947592646, -0.2701060276630582, 0.011168090217955867, 0.1688030866326346, 0.11123494506452461, -0.031273495230101506, -0.1165302080584557, -0.014246761292808366, 0.13016670989347812, -0.044148246220388224, 0.06173544846551151, 0.030239191608935862, -0.08237427592572129, -0.13992520913182357, 0.3342986589544738, -0.0983547886586463, -0.18988701206993083, 0.08685729875020226, -0.12605725061528536, -0.22316293660741376, 0.1106987446594071, 0.05123512269168788, 0.1645632213247674, -0.01386987266833989, 0.1771226949569275, -0.10109376554776515, 0.03482096397070861, 0.15683240372193408, -0.04798766910466746, 0.07414766459022554, 0.03486277728236983, 0.1226564648166793, 0.22451829925483588, 0.032593466813096356, -0.026407130063174064, -0.31809819634167513, -0.22937229346027788, -0.13007784808738804, 0.16874172558475817, -0.14570167976192777, -0.18259972441057692, 0.3832870832482847, 0.09295122396695066, 0.17922179197491034, 0.16772257366659576, 0.23702111192123623, 0.11715650624638348, 0.0178765472670903, 0.057318523084288656, 0.10981332965442264, 0.22538396404409894, -0.02599638001518134, -0.14632245289442147, -0.03845334120988086, 0.2655700582592767] |
707.2985 | Second order arithmetic means in operator ideals | Equality of the second order arithmetic means of two principal ideals does
not imply equality of their first order arithmetic means (second order equality
cancellation). We provide fairly broad sufficient conditions on one of the
principal ideals for this implication to hold true. We present also sufficient
conditions for second order inclusion cancellations. These conditions are
formulated in terms of the growth properties of the ratio of regularity
sequence associated to the sequence of s-number of a generator of the principal
ideal. These results are then extended to general ideals.
| math.FA math.OA | equality of the second order arithmetic means of two principal ideals does not imply equality of their first order arithmetic means second order equality cancellation we provide fairly broad sufficient conditions on one of the principal ideals for this implication to hold true we present also sufficient conditions for second order inclusion cancellations these conditions are formulated in terms of the growth properties of the ratio of regularity sequence associated to the sequence of snumber of a generator of the principal ideal these results are then extended to general ideals | [['equality', 'of', 'the', 'second', 'order', 'arithmetic', 'means', 'of', 'two', 'principal', 'ideals', 'does', 'not', 'imply', 'equality', 'of', 'their', 'first', 'order', 'arithmetic', 'means', 'second', 'order', 'equality', 'cancellation', 'we', 'provide', 'fairly', 'broad', 'sufficient', 'conditions', 'on', 'one', 'of', 'the', 'principal', 'ideals', 'for', 'this', 'implication', 'to', 'hold', 'true', 'we', 'present', 'also', 'sufficient', 'conditions', 'for', 'second', 'order', 'inclusion', 'cancellations', 'these', 'conditions', 'are', 'formulated', 'in', 'terms', 'of', 'the', 'growth', 'properties', 'of', 'the', 'ratio', 'of', 'regularity', 'sequence', 'associated', 'to', 'the', 'sequence', 'of', 'snumber', 'of', 'a', 'generator', 'of', 'the', 'principal', 'ideal', 'these', 'results', 'are', 'then', 'extended', 'to', 'general', 'ideals']] | [-0.17803813719720993, 0.05365351648069918, -0.052830650553935106, 0.11622885646065698, -0.08317086019087583, -0.08100258117645151, -0.030759158502850267, 0.3345883623231202, -0.3022170423219601, -0.24903423680613437, 0.18135863047274242, -0.20994174665667945, -0.10586930419732299, 0.16573582098094952, -0.0831364654832416, 0.07220382462126307, 0.028588450394777788, 0.0926186242014713, -0.08233973133481211, -0.32609467401893605, 0.38121045845457247, 0.01169873025889198, 0.20917324835641515, 0.06713850167062548, 0.06953339472206102, -0.016415323234266706, -0.004031946804995338, 0.012558168741977876, -0.18241040810114809, 0.1648259548884299, 0.24262510682973598, 0.116735443384904, 0.2590013058338728, -0.42720494183401264, -0.08781264676411714, 0.17375782045225302, 0.10108961818946732, 0.02596627673548129, 0.006616302490389595, -0.17647627376847796, 0.16441596734285768, -0.14276472058716333, -0.15404943343665864, -0.1072804688113845, -0.031211392457286515, 0.06047085163817327, -0.34453065917413267, 0.0800716597040365, 0.18209844428218072, 0.09545383968700966, -0.07125877465328409, -0.09283235673663309, -0.008643168831864993, 0.12652181535959245, 0.02393479413456387, -0.07992622365968095, 0.022092226275708525, -0.08960034415488027, -0.09592009573243558, 0.3752107847895887, -0.024548922649895152, -0.17669578064233066, 0.17098165405720162, -0.19331399308931496, -0.18293406633116926, 0.10685493680648506, 0.10119082003624903, 0.1323868624969489, -0.09513019451664553, 0.071378224544848, -0.0445378661983543, 0.13164249521990617, 0.09327986513704269, 0.07317450802786173, 0.1604176229124682, 0.06013707440967361, 0.08499082089919183, 0.15679099122321027, -0.0071254008947612925, -0.04608349512434668, -0.4399506345805195, -0.18658858037734818, -0.14008854385853434, 0.056808973334167, -0.12256546977183057, -0.16367582527713642, 0.40225445713020036, 0.16651506066943209, 0.1524091847732456, 0.09753079428854916, 0.2481985341809276, 0.13460855380916553, 0.028507988980143433, 0.017364705017664368, 0.19594926071456736, 0.22460725057042308, 0.0018041728990081335, -0.16638391002747488, 0.09796105434393718, 0.14387987883140643] |
707.2986 | Gromov-Witten invariants of varieties with holomorphic 2-forms | We show that a holomorphic two-form $\theta$ on a smooth algebraic variety X
localizes the virtual fundamental class of the moduli of stable maps
$\mgn(X,\beta)$ to the locus where $\theta$ degenerates; it then enables us to
define the localized GW-invariant, an algebro-geometric analogue of the local
invariant of Lee and Parker in symplectic geometry, which coincides with the
ordinary GW-invariant when X is proper. It is deformation invariant. Using
this, we prove formulas for low degree GW-invariants of minimal general type
surfaces with p_g>0 conjectured by Maulik and Pandharipande.
| math.AG | we show that a holomorphic twoform theta on a smooth algebraic variety x localizes the virtual fundamental class of the moduli of stable maps mgnxbeta to the locus where theta degenerates it then enables us to define the localized gwinvariant an algebrogeometric analogue of the local invariant of lee and parker in symplectic geometry which coincides with the ordinary gwinvariant when x is proper it is deformation invariant using this we prove formulas for low degree gwinvariants of minimal general type surfaces with p_g0 conjectured by maulik and pandharipande | [['we', 'show', 'that', 'a', 'holomorphic', 'twoform', 'theta', 'on', 'a', 'smooth', 'algebraic', 'variety', 'x', 'localizes', 'the', 'virtual', 'fundamental', 'class', 'of', 'the', 'moduli', 'of', 'stable', 'maps', 'mgnxbeta', 'to', 'the', 'locus', 'where', 'theta', 'degenerates', 'it', 'then', 'enables', 'us', 'to', 'define', 'the', 'localized', 'gwinvariant', 'an', 'algebrogeometric', 'analogue', 'of', 'the', 'local', 'invariant', 'of', 'lee', 'and', 'parker', 'in', 'symplectic', 'geometry', 'which', 'coincides', 'with', 'the', 'ordinary', 'gwinvariant', 'when', 'x', 'is', 'proper', 'it', 'is', 'deformation', 'invariant', 'using', 'this', 'we', 'prove', 'formulas', 'for', 'low', 'degree', 'gwinvariants', 'of', 'minimal', 'general', 'type', 'surfaces', 'with', 'p_g0', 'conjectured', 'by', 'maulik', 'and', 'pandharipande']] | [-0.18930828711017966, 0.07733651980462045, -0.12366652011405677, 0.08273559556453786, -0.12167917201242578, -0.16612574908967045, -0.011005506247536025, 0.2703587484852919, -0.3128724782939323, -0.20681271857624364, 0.044998816279324026, -0.20854639949869702, -0.21398914356673646, 0.20654578560920941, -0.17090222561141258, 0.015549949040922167, -0.021496412786125966, 0.0648959473288745, -0.12493520897061733, -0.27323992805560754, 0.4230178842659701, -0.04492881999414584, 0.23370018965480002, 0.037402915503745054, 0.1728671031834727, 0.03504580186563544, 0.00746110746298324, -0.022638611918823284, -0.1797410491302468, 0.16244320092267694, 0.25324692878480576, 0.03540853873180987, 0.12645231682637875, -0.335611743492667, -0.16547467496076768, 0.15271029086910526, 0.08257041535001587, 0.02952859835535161, 0.033118988936290734, -0.25619609702632506, 0.12762613699305803, -0.11315208525725624, -0.25091771742815827, -0.09411300162107429, 0.07898756890790537, 0.017027016760866074, -0.24103235531682995, -0.01023079807319763, 0.08762603674205655, 0.08460560093887827, -0.040231049304235385, -0.05938407258839685, -0.12100987234787847, 0.03682521067524001, 0.009645173998168584, 0.13239126450869002, 0.0651017587965312, -0.10496792590658349, -0.054171933070888786, 0.3329652360090139, -0.08830047447488389, -0.24591425599117595, 0.14229658830762756, -0.14282368197084658, -0.16397674337283455, 0.17006487599362366, 0.06711544292788445, 0.20438060553384607, -0.01914099983316026, 0.22291930883610886, -0.1081531793249517, 0.07329786756202918, 0.13551482358227737, -0.045734084451396484, 0.16066681002055042, 0.07134878552328287, 0.0959097886542705, 0.13700797611223112, -0.06609544085751456, -0.06938613479459574, -0.3542166546897285, -0.22367378606312824, -0.10195550015884113, 0.18643991139040075, -0.11201496150798365, -0.19377569000194358, 0.38346012092237786, 0.016881498878567734, 0.2087463085058103, 0.10185616714377167, 0.18949219647699714, 0.07438307218068406, 0.02178691297938878, 0.05766610490073534, 0.1476827272351577, 0.19908943706964652, -0.009931117544924333, -0.15668631775770336, -0.03613236093025824, 0.2059992324582047] |
707.2987 | On the Significance of the Weyl Curvature in a Relativistic Cosmological
Model | The Weyl curvature includes the Newtonian field and an additional field, the
so-called anti-Newtonian. In this paper, we use the Bianchi and Ricci
identities to provide a set of constraints and propagations for the Weyl
fields. The temporal evolutions of propagations manifest explicit solutions of
gravitational waves. We see that models with purely Newtonian field are
inconsistent with relativistic models and obstruct sounding solutions.
Therefore, both fields are necessary for the nonlocal nature and radiative
solutions of gravitation.
| physics.gen-ph gr-qc | the weyl curvature includes the newtonian field and an additional field the socalled antinewtonian in this paper we use the bianchi and ricci identities to provide a set of constraints and propagations for the weyl fields the temporal evolutions of propagations manifest explicit solutions of gravitational waves we see that models with purely newtonian field are inconsistent with relativistic models and obstruct sounding solutions therefore both fields are necessary for the nonlocal nature and radiative solutions of gravitation | [['the', 'weyl', 'curvature', 'includes', 'the', 'newtonian', 'field', 'and', 'an', 'additional', 'field', 'the', 'socalled', 'antinewtonian', 'in', 'this', 'paper', 'we', 'use', 'the', 'bianchi', 'and', 'ricci', 'identities', 'to', 'provide', 'a', 'set', 'of', 'constraints', 'and', 'propagations', 'for', 'the', 'weyl', 'fields', 'the', 'temporal', 'evolutions', 'of', 'propagations', 'manifest', 'explicit', 'solutions', 'of', 'gravitational', 'waves', 'we', 'see', 'that', 'models', 'with', 'purely', 'newtonian', 'field', 'are', 'inconsistent', 'with', 'relativistic', 'models', 'and', 'obstruct', 'sounding', 'solutions', 'therefore', 'both', 'fields', 'are', 'necessary', 'for', 'the', 'nonlocal', 'nature', 'and', 'radiative', 'solutions', 'of', 'gravitation']] | [-0.21445666117450365, 0.11012100201053097, -0.0892572326060289, 0.09765756136636274, -0.16473422055013287, -0.13300251613896436, -0.07480540686698917, 0.31263313508138824, -0.2256709632750314, -0.2676255349547435, 0.09206314285685761, -0.24737381503487435, -0.16678632234629148, 0.16493596320446485, -0.007875585540508231, 0.010377814682821432, 0.01594811751960944, 0.011159404826078875, -0.0627759141751971, -0.2028303999835864, 0.3886630106239747, 0.043088339102000765, 0.2125710453479909, 0.02412659554587056, 0.11452211593038952, -0.03682421015885969, -0.040143123589074, 0.05939238199677605, -0.15052716941798466, 0.0648598710122781, 0.1531782309351771, 0.0941857406272529, 0.1904592861672147, -0.49746033176779747, -0.26196707327826285, 0.09215812678807057, 0.12037603705912495, 0.1803233531745485, -0.0718134343624115, -0.32724851071356964, 0.021350750759339485, -0.13267753103028576, -0.14408155370023076, -0.10928706991939972, 0.010308839618049275, 0.03735640485030718, -0.2543175434096692, 0.12233707241905041, 0.07362088385241058, 0.041290731073763125, -0.14448499952992186, -0.044178086846398235, -0.00032350825420461403, 0.08572617000661409, 0.12651907707689902, -0.015240936916178236, 0.04163989157248766, -0.21858511165751573, -0.12533410519170454, 0.42603422892399323, -0.102553311511516, -0.24180467854230067, 0.1910231871625934, -0.1164126048843639, -0.08352372407292326, 0.10012632720650007, 0.16667480643790883, 0.1352926184041187, -0.14483210411316788, 0.12790432844821437, 0.013388474280826556, 0.07696196290168864, 0.07857982648345523, 0.047324336356280416, 0.2644337047942174, 0.020216550427274063, 0.02479730364985955, 0.07113059741431453, -0.04246054992127495, -0.09147284796031621, -0.41308817955163807, -0.18221748328934878, -0.09144016505720523, 0.0598310290549237, -0.10280407512562725, -0.1896876673309658, 0.4022242692418588, 0.16701333538796276, 0.0948146406847697, 0.09268340174084863, 0.24244203279988888, 0.10961126398839181, 0.050103369336097665, 0.13247553125405923, 0.3261905317672361, 0.1922193291859749, 0.13927004780047214, -0.1973491452085093, -0.06438349526620303, 0.06978852847495522] |
707.2988 | Non-equilibrium statistical mechanics of classical nuclei interacting
with the quantum electron gas | Kinetic equations governing time evolution of positions and momenta of atoms
in extended systems are derived using quantum-classical ensembles within the
Non-Equilibrium Statistical Operator Method (NESOM). Ions are treated
classically, while their electrons quantum mechanically; however, the
statistical operator is not factorised in any way and no simplifying
assumptions are made concerning the electronic subsystem. Using this method, we
derive kinetic equations of motion for the classical degrees of freedom (atoms)
which account fully for the interaction and energy exchange with the quantum
variables (electrons). Our equations, alongside the usual Newtonian-like terms
normally associated with the Ehrenfest dynamics, contain additional terms,
proportional to the atoms velocities, which can be associated with the
electronic friction. Possible ways of calculating the friction forces which are
shown to be given via complicated non-equilibrium correlation functions, are
discussed. In particular, we demonstrate that the correlation functions are
directly related to the thermodynamic Matsubara Green's functions, and this
relationship allows for the diagrammatic methods to be used in treating
electron-electron interaction perturbatively when calculating the correlation
functions. This work also generalises previous attempts, mostly based on model
systems, of introducing the electronic friction into Molecular Dynamics
equations of atoms.
| cond-mat.stat-mech | kinetic equations governing time evolution of positions and momenta of atoms in extended systems are derived using quantumclassical ensembles within the nonequilibrium statistical operator method nesom ions are treated classically while their electrons quantum mechanically however the statistical operator is not factorised in any way and no simplifying assumptions are made concerning the electronic subsystem using this method we derive kinetic equations of motion for the classical degrees of freedom atoms which account fully for the interaction and energy exchange with the quantum variables electrons our equations alongside the usual newtonianlike terms normally associated with the ehrenfest dynamics contain additional terms proportional to the atoms velocities which can be associated with the electronic friction possible ways of calculating the friction forces which are shown to be given via complicated nonequilibrium correlation functions are discussed in particular we demonstrate that the correlation functions are directly related to the thermodynamic matsubara greens functions and this relationship allows for the diagrammatic methods to be used in treating electronelectron interaction perturbatively when calculating the correlation functions this work also generalises previous attempts mostly based on model systems of introducing the electronic friction into molecular dynamics equations of atoms | [['kinetic', 'equations', 'governing', 'time', 'evolution', 'of', 'positions', 'and', 'momenta', 'of', 'atoms', 'in', 'extended', 'systems', 'are', 'derived', 'using', 'quantumclassical', 'ensembles', 'within', 'the', 'nonequilibrium', 'statistical', 'operator', 'method', 'nesom', 'ions', 'are', 'treated', 'classically', 'while', 'their', 'electrons', 'quantum', 'mechanically', 'however', 'the', 'statistical', 'operator', 'is', 'not', 'factorised', 'in', 'any', 'way', 'and', 'no', 'simplifying', 'assumptions', 'are', 'made', 'concerning', 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'functions', 'and', 'this', 'relationship', 'allows', 'for', 'the', 'diagrammatic', 'methods', 'to', 'be', 'used', 'in', 'treating', 'electronelectron', 'interaction', 'perturbatively', 'when', 'calculating', 'the', 'correlation', 'functions', 'this', 'work', 'also', 'generalises', 'previous', 'attempts', 'mostly', 'based', 'on', 'model', 'systems', 'of', 'introducing', 'the', 'electronic', 'friction', 'into', 'molecular', 'dynamics', 'equations', 'of', 'atoms']] | [-0.11264459163835996, 0.16621749715787876, -0.10550079358514843, 0.08911198725890117, -0.023581463457543615, -0.12347568316780841, 0.0047713858027184875, 0.3473309659703099, -0.28270138558507, -0.2766825865490912, -8.827904323743261e-05, -0.2880523714727458, -0.1259461018121729, 0.16491700585031582, 0.03748304443554518, 0.0670409762768625, 0.04353921308297992, -0.01264922124927217, -0.08687061316923629, -0.214760248832781, 0.32269386868740535, 0.04607566262696691, 0.22754780952022483, 0.06454398019910051, 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707.2989 | Conformal Ricci and Matter Collineations for Anisotropic Fluid | We study the consequences of timelike and spaccelike conformal Ricci and
conformal matter collineations for anisotropic fluid in the context of General
Relativity. Necessary and sufficient conditions are derived for a spacetime
with anisotropic fluid to admit conformal Ricci and conformal matter
collineations parallel to u^a and x^a. These conditions for timelike and
spacelike conformal Ricci and conformal matter collineations for anisotropic
fluid reduce to the conditions of perfect fluid when the heat flux and the
traceless anisotropic stress tensor vanish. Further, for $\alpha=0$ (the
conformal factor), we recover the earlier results of Ricci collineations and
matter collineations in each case of timelike and spacelike conformal Ricci
collineations and conformal matter collineations for the perfect fluid. Thus
our results give the generalization of the results already available in the
literature. It is worth noticing that the conditions of conformal matter
collineations can be derived from the conditions of conformal Ricci
collineations or vice versa under certain constraints.
| gr-qc | we study the consequences of timelike and spaccelike conformal ricci and conformal matter collineations for anisotropic fluid in the context of general relativity necessary and sufficient conditions are derived for a spacetime with anisotropic fluid to admit conformal ricci and conformal matter collineations parallel to ua and xa these conditions for timelike and spacelike conformal ricci and conformal matter collineations for anisotropic fluid reduce to the conditions of perfect fluid when the heat flux and the traceless anisotropic stress tensor vanish further for alpha0 the conformal factor we recover the earlier results of ricci collineations and matter collineations in each case of timelike and spacelike conformal ricci collineations and conformal matter collineations for the perfect fluid thus our results give the generalization of the results already available in the literature it is worth noticing that the conditions of conformal matter collineations can be derived from the conditions of conformal ricci collineations or vice versa under certain constraints | [['we', 'study', 'the', 'consequences', 'of', 'timelike', 'and', 'spaccelike', 'conformal', 'ricci', 'and', 'conformal', 'matter', 'collineations', 'for', 'anisotropic', 'fluid', 'in', 'the', 'context', 'of', 'general', 'relativity', 'necessary', 'and', 'sufficient', 'conditions', 'are', 'derived', 'for', 'a', 'spacetime', 'with', 'anisotropic', 'fluid', 'to', 'admit', 'conformal', 'ricci', 'and', 'conformal', 'matter', 'collineations', 'parallel', 'to', 'ua', 'and', 'xa', 'these', 'conditions', 'for', 'timelike', 'and', 'spacelike', 'conformal', 'ricci', 'and', 'conformal', 'matter', 'collineations', 'for', 'anisotropic', 'fluid', 'reduce', 'to', 'the', 'conditions', 'of', 'perfect', 'fluid', 'when', 'the', 'heat', 'flux', 'and', 'the', 'traceless', 'anisotropic', 'stress', 'tensor', 'vanish', 'further', 'for', 'alpha0', 'the', 'conformal', 'factor', 'we', 'recover', 'the', 'earlier', 'results', 'of', 'ricci', 'collineations', 'and', 'matter', 'collineations', 'in', 'each', 'case', 'of', 'timelike', 'and', 'spacelike', 'conformal', 'ricci', 'collineations', 'and', 'conformal', 'matter', 'collineations', 'for', 'the', 'perfect', 'fluid', 'thus', 'our', 'results', 'give', 'the', 'generalization', 'of', 'the', 'results', 'already', 'available', 'in', 'the', 'literature', 'it', 'is', 'worth', 'noticing', 'that', 'the', 'conditions', 'of', 'conformal', 'matter', 'collineations', 'can', 'be', 'derived', 'from', 'the', 'conditions', 'of', 'conformal', 'ricci', 'collineations', 'or', 'vice', 'versa', 'under', 'certain', 'constraints']] | [-0.16008479652018884, 0.1691907739165263, -0.10832826331413041, 0.04885084733131151, -0.1972320728490535, -0.18145692738919303, -0.14650240992434704, 0.3438480688611237, -0.19991245044347566, -0.21207946399226785, 0.10533669296702823, -0.2503123102733531, -0.11603056127951743, 0.10484671222422129, -0.004640281743680437, 0.06962236345339662, -0.02000142499888077, 0.10896491176950243, -0.1366260684474419, -0.27155667087301993, 0.4380945699462572, 0.04645763682231355, 0.2986161236364681, 0.11224806933023501, 0.14420910795720723, -0.05054901427446076, -0.03647347794135268, 0.07347052263764617, -0.25889264886553487, 0.022221004106820777, 0.24884405377535865, 0.0926048347279366, 0.09805857266585988, -0.4591896256479697, -0.26513403514101624, 0.14663996804171267, 0.09894076513890655, 0.0780904737707132, -0.052334795477620974, -0.33293568084870157, 0.0885210618412552, -0.07544653148551543, -0.1837446035448617, -0.09997190315371905, -0.017074127406932604, -0.0804490050381551, -0.2231912427665427, 0.1917531312091085, 0.11844265235898395, 0.036482039009663424, -0.13330334345571315, -0.0629351019504098, -0.0807303225230545, 0.029145411610676464, 0.13081774782208064, 0.013509770841875043, 0.1390563631609369, -0.21024055626595584, -0.016755607564193316, 0.4014600711808994, -0.08681845196723514, -0.3027031838487929, 0.10013999850250399, -0.11622801532324117, -0.1311117236215908, 0.051398419500448, 0.12133330699557868, 0.14829117549995247, -0.12146638475529378, 0.18768830231326716, -0.05511159844433841, -0.005786355089348478, 0.1622921490820889, -0.014080154560454106, 0.23864915072007511, -0.005748679009206497, 0.08235690282442822, 0.1291646872272488, 0.06415545830550866, -0.10002413225652745, -0.46855038177604097, -0.23390627902550384, -0.13541495071676296, 0.11803383323757981, -0.26106790747713277, -0.11321166956212181, 0.3381337370777216, 0.028487972624973806, 0.09878752974066465, 0.09432028248333015, 0.23284808904505694, -0.02112330623882978, 0.03921834069590729, 0.21006675337692007, 0.29931458967845315, 0.25894028884478104, 0.12347820057990387, -0.1721831819047041, -0.13061039673928648, 0.09347446519547166] |
707.299 | Suppression of High Transverse Momentum $\pi^0$ Spectra in Au+Au
Collisions at RHIC | Au+Au, $s^{1/2} = 200$ A GeV measurements at RHIC, obtained with the PHENIX,
STAR, PHOBOS and BRAHMS detectors, have all indicated a suppression of neutral
pion production, relative to an appropriately normalized NN level. For central
collisions and vanishing pseudo-rapidity these experiments exhibit suppression
in charged meson production, especially at medium to large transverse momenta.
In the PHENIX experiment similar behavior has been reported for $\pi^0$
spectra.
In a recent work on the simpler D+Au interaction, to be considered perhaps as
a tune-up for Au+Au, we reported on a pre-hadronic cascade mechanism which
explains the mixed observation of moderately reduced $p_\perp$ suppression at
higher pseudo-rapidity as well as the Cronin enhancement at mid-rapidity. Here
we present the extension of this work to the more massive ion-ion collisions.
Our major thesis is that much of the suppression is generated in a late stage
cascade of colourless pre-hadrons produced after an initial short-lived
coloured phase. We present a pQCD argument to justify this approach and to
estimate the time duration $\tau_p$ of this initial phase. Of essential
importance is the brevity in time of the coloured phase existence relative to
that of the strongly interacting pre-hadron phase. The split into two phases is
of course not sharp in time, but adequate for treating the suppression of
moderate and high $p_\perp$ mesons.
| nucl-th | auau s12 200 a gev measurements at rhic obtained with the phenix star phobos and brahms detectors have all indicated a suppression of neutral pion production relative to an appropriately normalized nn level for central collisions and vanishing pseudorapidity these experiments exhibit suppression in charged meson production especially at medium to large transverse momenta in the phenix experiment similar behavior has been reported for pi0 spectra in a recent work on the simpler dau interaction to be considered perhaps as a tuneup for auau we reported on a prehadronic cascade mechanism which explains the mixed observation of moderately reduced p_perp suppression at higher pseudorapidity as well as the cronin enhancement at midrapidity here we present the extension of this work to the more massive ionion collisions our major thesis is that much of the suppression is generated in a late stage cascade of colourless prehadrons produced after an initial shortlived coloured phase we present a pqcd argument to justify this approach and to estimate the time duration tau_p of this initial phase of essential importance is the brevity in time of the coloured phase existence relative to that of the strongly interacting prehadron phase the split into two phases is of course not sharp in time but adequate for treating the suppression of moderate and high p_perp mesons | [['auau', 's12', '200', 'a', 'gev', 'measurements', 'at', 'rhic', 'obtained', 'with', 'the', 'phenix', 'star', 'phobos', 'and', 'brahms', 'detectors', 'have', 'all', 'indicated', 'a', 'suppression', 'of', 'neutral', 'pion', 'production', 'relative', 'to', 'an', 'appropriately', 'normalized', 'nn', 'level', 'for', 'central', 'collisions', 'and', 'vanishing', 'pseudorapidity', 'these', 'experiments', 'exhibit', 'suppression', 'in', 'charged', 'meson', 'production', 'especially', 'at', 'medium', 'to', 'large', 'transverse', 'momenta', 'in', 'the', 'phenix', 'experiment', 'similar', 'behavior', 'has', 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707.2991 | Graphic-Card Cluster for Astrophysics (GraCCA) -- Performance Tests | In this paper, we describe the architecture and performance of the GraCCA
system, a Graphic-Card Cluster for Astrophysics simulations. It consists of 16
nodes, with each node equipped with 2 modern graphic cards, the NVIDIA GeForce
8800 GTX. This computing cluster provides a theoretical performance of 16.2
TFLOPS. To demonstrate its performance in astrophysics computation, we have
implemented a parallel direct N-body simulation program with shared time-step
algorithm in this system. Our system achieves a measured performance of 7.1
TFLOPS and a parallel efficiency of 90% for simulating a globular cluster of
1024K particles. In comparing with the GRAPE-6A cluster at RIT (Rochester
Institute of Technology), the GraCCA system achieves a more than twice higher
measured speed and an even higher performance-per-dollar ratio. Moreover, our
system can handle up to 320M particles and can serve as a general-purpose
computing cluster for a wide range of astrophysics problems.
| astro-ph | in this paper we describe the architecture and performance of the gracca system a graphiccard cluster for astrophysics simulations it consists of 16 nodes with each node equipped with 2 modern graphic cards the nvidia geforce 8800 gtx this computing cluster provides a theoretical performance of 162 tflops to demonstrate its performance in astrophysics computation we have implemented a parallel direct nbody simulation program with shared timestep algorithm in this system our system achieves a measured performance of 71 tflops and a parallel efficiency of 90 for simulating a globular cluster of 1024k particles in comparing with the grape6a cluster at rit rochester institute of technology the gracca system achieves a more than twice higher measured speed and an even higher performanceperdollar ratio moreover our system can handle up to 320m particles and can serve as a generalpurpose computing cluster for a wide range of astrophysics problems | [['in', 'this', 'paper', 'we', 'describe', 'the', 'architecture', 'and', 'performance', 'of', 'the', 'gracca', 'system', 'a', 'graphiccard', 'cluster', 'for', 'astrophysics', 'simulations', 'it', 'consists', 'of', '16', 'nodes', 'with', 'each', 'node', 'equipped', 'with', '2', 'modern', 'graphic', 'cards', 'the', 'nvidia', 'geforce', '8800', 'gtx', 'this', 'computing', 'cluster', 'provides', 'a', 'theoretical', 'performance', 'of', '162', 'tflops', 'to', 'demonstrate', 'its', 'performance', 'in', 'astrophysics', 'computation', 'we', 'have', 'implemented', 'a', 'parallel', 'direct', 'nbody', 'simulation', 'program', 'with', 'shared', 'timestep', 'algorithm', 'in', 'this', 'system', 'our', 'system', 'achieves', 'a', 'measured', 'performance', 'of', '71', 'tflops', 'and', 'a', 'parallel', 'efficiency', 'of', '90', 'for', 'simulating', 'a', 'globular', 'cluster', 'of', '1024k', 'particles', 'in', 'comparing', 'with', 'the', 'grape6a', 'cluster', 'at', 'rit', 'rochester', 'institute', 'of', 'technology', 'the', 'gracca', 'system', 'achieves', 'a', 'more', 'than', 'twice', 'higher', 'measured', 'speed', 'and', 'an', 'even', 'higher', 'performanceperdollar', 'ratio', 'moreover', 'our', 'system', 'can', 'handle', 'up', 'to', '320m', 'particles', 'and', 'can', 'serve', 'as', 'a', 'generalpurpose', 'computing', 'cluster', 'for', 'a', 'wide', 'range', 'of', 'astrophysics', 'problems']] | [-0.13237904292829727, 0.020802621338717332, -0.0618847901834516, -0.01129499552394329, -0.027019248560438275, -0.14349894491221074, 0.03899212391361673, 0.3679739166031474, -0.20579325477592647, -0.4192546462495877, 0.0717580338946583, -0.25417772378169107, -0.04308566074280567, 0.3005017298929603, -0.039198222835540024, 0.0554948924744705, 0.17356438477995845, 0.04147443819207362, -0.07404524120965375, -0.29637956102526236, 0.18733545414723035, 0.13741195337964932, 0.24478375349803763, 0.016157674252278577, 0.16228277534537483, -0.029916761546317016, 0.016710728295409764, 0.0060439029885587135, -0.07574091681515352, 0.1335182324759777, 0.2472774940772428, 0.15837705052051115, 0.304971092334673, -0.37480490250696596, -0.13290549497264373, 0.0470416488754727, 0.16365885083288165, 0.047804898529930015, -0.06289271102666046, -0.24437271525204496, 0.15165934501163347, -0.25205935937890284, -0.11429362582423212, -0.01750145158009, -0.006878509202604772, 0.028270922670088395, -0.2507812902396938, 0.036152906237091394, -0.028652167131363506, 0.08186602799392396, -0.028019847119600892, -0.15373318808884556, 0.047237692440164764, 0.12084068463292157, -0.1013994090075434, 0.089521281272796, 0.15966111490450485, -0.10639687238792352, -0.14922132302226473, 0.4285553828354033, -0.03577914656663369, -0.1417253389171633, 0.23138615855960254, -0.10652905041483086, -0.1550752123273437, 0.08671956645770812, 0.2201338789465142, 0.08877162278701985, -0.13132481610166355, 0.0667007524113525, -0.012967543043589718, 0.2120102579823472, 0.04879933705022165, 0.0045111236271315625, 0.19179313171254864, 0.26565006694553134, 0.04850045979370586, 0.15309456323476797, -0.12940941561787375, -0.09070359468033773, -0.20846136243158006, -0.2191440046332042, -0.15284394686648123, -0.012403336666773637, -0.10581784064961026, -0.11236839930520354, 0.36082696700862177, 0.16186846385408246, 0.12967600461757992, 0.10587479411230856, 0.31947134737528754, 0.0440202940814525, 0.1038746525120305, 0.16343831441457002, 0.1897096283968315, 0.09642002240977657, 0.15773378531727283, -0.19187843062731266, -0.016268186604040086, -0.016351193217495064] |
707.2992 | Hartree-Fock calculations of a finite inhomogeneous quantum wire | We use the Hartree-Fock method to study an interacting one-dimensional
electron system on a finite wire, partially depleted at the center by a smooth
potential barrier. A uniform one-Tesla Zeeman field is applied throughout the
system. We find that with the increase in the potential barrier, the low
density electrons under it go from a non-magnetic state to an antiferromagnetic
state, and then to a state with a well-localized spin-aligned region isolated
by two antiferromagnetic regions from the high density leads. At this final
stage, in response to a continuously increasing barrier potential, the system
undergoes a series of abrupt density changes, corresponding to the successive
expulsion of a single electron from the spin-aligned region under the barrier.
Motivated by the recent momentum-resolved tunneling experiments in a parallel
wire geometry, we also compute the momentum resolved tunneling matrix elements.
Our calculations suggest that the eigenstates being expelled are spatially
localized, consistent with the experimental observations. However, additional
mechanisms are needed to account for the experimentally observed large spectral
weight at near $k=0$ in the tunneling matrix elements.
| cond-mat.mes-hall cond-mat.str-el | we use the hartreefock method to study an interacting onedimensional electron system on a finite wire partially depleted at the center by a smooth potential barrier a uniform onetesla zeeman field is applied throughout the system we find that with the increase in the potential barrier the low density electrons under it go from a nonmagnetic state to an antiferromagnetic state and then to a state with a welllocalized spinaligned region isolated by two antiferromagnetic regions from the high density leads at this final stage in response to a continuously increasing barrier potential the system undergoes a series of abrupt density changes corresponding to the successive expulsion of a single electron from the spinaligned region under the barrier motivated by the recent momentumresolved tunneling experiments in a parallel wire geometry we also compute the momentum resolved tunneling matrix elements our calculations suggest that the eigenstates being expelled are spatially localized consistent with the experimental observations however additional mechanisms are needed to account for the experimentally observed large spectral weight at near k0 in the tunneling matrix elements | [['we', 'use', 'the', 'hartreefock', 'method', 'to', 'study', 'an', 'interacting', 'onedimensional', 'electron', 'system', 'on', 'a', 'finite', 'wire', 'partially', 'depleted', 'at', 'the', 'center', 'by', 'a', 'smooth', 'potential', 'barrier', 'a', 'uniform', 'onetesla', 'zeeman', 'field', 'is', 'applied', 'throughout', 'the', 'system', 'we', 'find', 'that', 'with', 'the', 'increase', 'in', 'the', 'potential', 'barrier', 'the', 'low', 'density', 'electrons', 'under', 'it', 'go', 'from', 'a', 'nonmagnetic', 'state', 'to', 'an', 'antiferromagnetic', 'state', 'and', 'then', 'to', 'a', 'state', 'with', 'a', 'welllocalized', 'spinaligned', 'region', 'isolated', 'by', 'two', 'antiferromagnetic', 'regions', 'from', 'the', 'high', 'density', 'leads', 'at', 'this', 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707.2993 | Revised metallicity classes for low-mass stars: dwarfs (dM), subdwarfs
(sdM), extreme subdwarfs (esdM), and ultra subdwarfs (usdM) | The current classification system of M stars on the main sequence
distinguishes three metallicity classes (dwarfs - dM, subdwarfs - sdM, and
extreme subdwarfs - esdM). The spectroscopic definition of these classes is
based on the relative strength of prominent CaH and TiO molecular absorption
bands near 7000A, as quantified by three spectroscopic indices (CaH2, CaH3, and
TiO5). We re-examine this classification system in light of our ongoing
spectroscopic survey of stars with proper motion \mu > 0.45 "/yr, which has
increased the census of spectroscopically identified metal-poor M stars to over
400 objects. Kinematic separation of disk dwarfs and halo subdwarfs suggest
deficiencies in the current classification system. Observations of common
proper motion doubles indicates that the current dM/sdM and sdM/esdM boundaries
in the [TiO5,CaH2+CaH3] index plane do not follow iso-metallicity contours,
leaving some binaries inappropriately classified as dM+sdM or sdM+esdM. We
propose a revision of the classification system based on an empirical
calibration of the TiO/CaH ratio for stars of near solar metallicity. We
introduce the parameter \zeta_{TiO/CaH} which quantifies the weakening of the
TiO bandstrength due to metallicity effect, with values ranging from
\zeta_{TiO/CaH}=1 for stars of near-solar metallicity to \zeta_{TiO/CaH}~0 for
the most metal-poor (and TiO depleted) subdwarfs. We redefine the metallicity
classes based on the value of the parameter \zeta_{TiO/CaH}; and refine the
scheme by introducing an additional class of ultra subdwarfs (usdM). We
introduce sequences of sdM, esdM, and usdM stars to be used as formal
classification standards.
| astro-ph | the current classification system of m stars on the main sequence distinguishes three metallicity classes dwarfs dm subdwarfs sdm and extreme subdwarfs esdm the spectroscopic definition of these classes is based on the relative strength of prominent cah and tio molecular absorption bands near 7000a as quantified by three spectroscopic indices cah2 cah3 and tio5 we reexamine this classification system in light of our ongoing spectroscopic survey of stars with proper motion mu 045 yr which has increased the census of spectroscopically identified metalpoor m stars to over 400 objects kinematic separation of disk dwarfs and halo subdwarfs suggest deficiencies in the current classification system observations of common proper motion doubles indicates that the current dmsdm and sdmesdm boundaries in the tio5cah2cah3 index plane do not follow isometallicity contours leaving some binaries inappropriately classified as dmsdm or sdmesdm we propose a revision of the classification system based on an empirical calibration of the tiocah ratio for stars of near solar metallicity we introduce the parameter zeta_tiocah which quantifies the weakening of the tio bandstrength due to metallicity effect with values ranging from zeta_tiocah1 for stars of nearsolar metallicity to zeta_tiocah0 for the most metalpoor and tio depleted subdwarfs we redefine the metallicity classes based on the value of the parameter zeta_tiocah and refine the scheme by introducing an additional class of ultra subdwarfs usdm we introduce sequences of sdm esdm and usdm stars to be used as formal classification standards | [['the', 'current', 'classification', 'system', 'of', 'm', 'stars', 'on', 'the', 'main', 'sequence', 'distinguishes', 'three', 'metallicity', 'classes', 'dwarfs', 'dm', 'subdwarfs', 'sdm', 'and', 'extreme', 'subdwarfs', 'esdm', 'the', 'spectroscopic', 'definition', 'of', 'these', 'classes', 'is', 'based', 'on', 'the', 'relative', 'strength', 'of', 'prominent', 'cah', 'and', 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707.2994 | Card shuffling and diophantine approximation | The ``overlapping-cycles shuffle'' mixes a deck of $n$ cards by moving either
the $n$th card or the $(n-k)$th card to the top of the deck, with probability
half each. We determine the spectral gap for the location of a single card,
which, as a function of $k$ and $n$, has surprising behavior. For example,
suppose $k$ is the closest integer to $\alpha n$ for a fixed real
$\alpha\in(0,1)$. Then for rational $\alpha$ the spectral gap is
$\Theta(n^{-2})$, while for poorly approximable irrational numbers $\alpha$,
such as the reciprocal of the golden ratio, the spectral gap is
$\Theta(n^{-3/2})$.
| math.PR | the overlappingcycles shuffle mixes a deck of n cards by moving either the nth card or the nkth card to the top of the deck with probability half each we determine the spectral gap for the location of a single card which as a function of k and n has surprising behavior for example suppose k is the closest integer to alpha n for a fixed real alphain01 then for rational alpha the spectral gap is thetan2 while for poorly approximable irrational numbers alpha such as the reciprocal of the golden ratio the spectral gap is thetan32 | [['the', 'overlappingcycles', 'shuffle', 'mixes', 'a', 'deck', 'of', 'n', 'cards', 'by', 'moving', 'either', 'the', 'nth', 'card', 'or', 'the', 'nkth', 'card', 'to', 'the', 'top', 'of', 'the', 'deck', 'with', 'probability', 'half', 'each', 'we', 'determine', 'the', 'spectral', 'gap', 'for', 'the', 'location', 'of', 'a', 'single', 'card', 'which', 'as', 'a', 'function', 'of', 'k', 'and', 'n', 'has', 'surprising', 'behavior', 'for', 'example', 'suppose', 'k', 'is', 'the', 'closest', 'integer', 'to', 'alpha', 'n', 'for', 'a', 'fixed', 'real', 'alphain01', 'then', 'for', 'rational', 'alpha', 'the', 'spectral', 'gap', 'is', 'thetan2', 'while', 'for', 'poorly', 'approximable', 'irrational', 'numbers', 'alpha', 'such', 'as', 'the', 'reciprocal', 'of', 'the', 'golden', 'ratio', 'the', 'spectral', 'gap', 'is', 'thetan32']] | [-0.1771140268513894, 0.1345558067005186, -0.044860245713304416, 0.05350914562465429, -0.06120333571501154, -0.21772020504189035, 0.12053563877119207, 0.3291862795983131, -0.3185436548034583, -0.3178214396763603, 0.08641918046487262, -0.33316268275666516, -0.10184412080464729, 0.12453132691977468, -0.02161839996794394, 0.05482795122952666, -0.017815008056156028, 0.1479231632159402, -0.035178880352759734, -0.22744266888670003, 0.32257980708770145, -0.00032933271722868085, 0.1630457762463872, 0.010574724976322614, 0.06407169105174641, 0.012752119049158258, 0.03538643298573637, -0.027005696537950524, -0.11514994312043807, 0.03962917400834461, 0.19037424068180067, 0.06979031421845623, 0.29133751868115115, -0.3265986301121302, -0.08817255992714006, 0.13212427048226041, 0.14673048151113713, -0.043254129885705574, -0.02579333865530013, -0.2116068244407264, 0.15037715148446296, -0.12385285432780317, -0.14519726073073494, 0.03740465053124353, 0.11745578683136652, 0.03272572629308949, -0.3217378479457693, -0.02468138565503371, 0.04685143717021371, 0.06897109721709664, 0.029710060562744427, -0.20580918730896278, -0.023207941851675667, 0.179155058079535, 0.015554104856467651, 0.03217375480259458, 0.07895649862863745, -0.12322434196539689, -0.09758006110496353, 0.42043669063908357, -0.06298832329533373, -0.1899103004252538, 0.0839542934045312, -0.16975594231917057, -0.1190111130902854, 0.13916471984703094, 0.08565419000418235, 0.11913980079892401, -0.004706680454546586, 0.12965420843041406, -0.1331979097740259, 0.22244619065653146, 0.10595632525898206, -0.04292177471021811, 0.17700573228103167, 0.09772154157205175, 0.10714972832162555, 0.15299044378237645, -0.11193256871896058, -0.08048039407003671, -0.30740921550507966, -0.233230015275088, -0.25785112134447746, 0.09223524201176285, -0.13114797755633845, -0.17760768489097245, 0.3380539712185661, 0.036322192259831354, 0.2474646941603472, 0.095456441744318, 0.28655945359302376, 0.14395262644150839, 0.05694281242419189, 0.07233352868934162, 0.09043353609740734, 0.08727852515585255, 0.06552913049866523, -0.17469079170647697, 0.06411509596606872, 0.08452420152025297] |
707.2995 | Triple Hilbert transforms along polynomial surfaces | This paper has been withdrawn since it contains some discrepancy with othe
authers's recent result. We will not post this until this discrepancy is
resolved.
| math.CA | this paper has been withdrawn since it contains some discrepancy with othe autherss recent result we will not post this until this discrepancy is resolved | [['this', 'paper', 'has', 'been', 'withdrawn', 'since', 'it', 'contains', 'some', 'discrepancy', 'with', 'othe', 'autherss', 'recent', 'result', 'we', 'will', 'not', 'post', 'this', 'until', 'this', 'discrepancy', 'is', 'resolved']] | [-0.0881758601947998, 0.0619970847692457, -0.15594676897550622, 0.01549082322162576, -0.14018764269227782, -0.0966485933555911, 0.014953966723017706, 0.45898988967140514, -0.27427882282063365, -0.34753740206360817, 0.13768961957733458, -0.29995656572282314, -0.158737293308756, 0.091363523924277, -0.2665333137847483, 0.04199205952075621, 0.127822161729758, -0.027351909317076206, -0.037070239816481866, -0.3891406773279111, 0.2925075652698676, 0.09385256007468949, 0.13931203978912285, 0.2097574339907927, 0.01793504904101913, -0.0866070144305316, -0.10101974724481504, 0.045329360757023096, -0.19054468185640872, 0.05836570484098047, 0.24755196801076332, 0.15812518784271865, 0.3742661830037832, -0.3675993273500353, -0.22852838607893014, 0.17700015351874754, 0.20221582474187016, 0.1839073096246769, -0.13144524861127138, -0.18395778257399797, 0.12062265873343374, -0.2164227181735138, -0.11980081101258595, 0.016634129259424906, 0.11014651266547541, -0.14887389028444886, -0.14275322856459147, 0.09411536461751287, 0.13482799278184152, 0.05760839965660125, 0.08421415086680402, -0.13893310331817096, 0.1063871953325967, 0.11902108836996679, 0.1493151627461581, 0.17917828598971633, -0.04324795416323468, -0.0072407938217414385, -0.05235176060038308, 0.3085362818092108, 0.009282953183477124, -0.1375904034745569, 0.152652916420872, -0.15583822480402887, -0.25994716588562977, 0.11071233924788733, 0.010216652532108128, 0.09426145449591179, -0.23313809069804847, 0.11209713178686798, -0.12301956738034885, 0.1900184266269207, 0.15118673730952045, -0.03447524178773165, 0.19187670948061472, 0.20632588256072873, 0.003945409591930608, 0.097209205191272, -0.08282782005456586, -0.0279119409484944, -0.25456403056159616, -0.12858941433175156, -0.2199860952484111, 0.12580123203285135, 0.183355522264416, -0.11471687358183165, 0.2922725810979803, 0.20356143968335041, 0.20313692143342146, -0.02487775344828454, 0.3121157861702765, 0.14325667994853575, 0.10180899011902511, 0.045825181276692696, 0.36011453631241847, 0.10300144782134642, 0.19810933254969618, -0.07640535165167724, 0.16816993574320804, 0.05959950143005699] |
707.2996 | Continuous and discontinuous phase transitions and partial
synchronization in stochastic three-state oscillators | We investigate both continuous (second-order) and discontinuous (first-order)
transitions to macroscopic synchronization within a single class of discrete,
stochastic (globally) phase-coupled oscillators. We provide analytical and
numerical evidence that the continuity of the transition depends on the
coupling coefficients and, in some nonuniform populations, on the degree of
quenched disorder. Hence, in a relatively simple setting this class of models
exhibits the qualitative behaviors characteristic of a variety of considerably
more complicated models. In addition, we study the microscopic basis of
synchronization above threshold and detail the counterintuitive subtleties
relating measurements of time averaged frequencies and mean field oscillations.
Most notably, we observe a state of suprathreshold partial synchronization in
which time-averaged frequency measurements from individual oscillators do not
correspond to the frequency of macroscopic oscillations observed in the
population.
| cond-mat.stat-mech cond-mat.soft | we investigate both continuous secondorder and discontinuous firstorder transitions to macroscopic synchronization within a single class of discrete stochastic globally phasecoupled oscillators we provide analytical and numerical evidence that the continuity of the transition depends on the coupling coefficients and in some nonuniform populations on the degree of quenched disorder hence in a relatively simple setting this class of models exhibits the qualitative behaviors characteristic of a variety of considerably more complicated models in addition we study the microscopic basis of synchronization above threshold and detail the counterintuitive subtleties relating measurements of time averaged frequencies and mean field oscillations most notably we observe a state of suprathreshold partial synchronization in which timeaveraged frequency measurements from individual oscillators do not correspond to the frequency of macroscopic oscillations observed in the population | [['we', 'investigate', 'both', 'continuous', 'secondorder', 'and', 'discontinuous', 'firstorder', 'transitions', 'to', 'macroscopic', 'synchronization', 'within', 'a', 'single', 'class', 'of', 'discrete', 'stochastic', 'globally', 'phasecoupled', 'oscillators', 'we', 'provide', 'analytical', 'and', 'numerical', 'evidence', 'that', 'the', 'continuity', 'of', 'the', 'transition', 'depends', 'on', 'the', 'coupling', 'coefficients', 'and', 'in', 'some', 'nonuniform', 'populations', 'on', 'the', 'degree', 'of', 'quenched', 'disorder', 'hence', 'in', 'a', 'relatively', 'simple', 'setting', 'this', 'class', 'of', 'models', 'exhibits', 'the', 'qualitative', 'behaviors', 'characteristic', 'of', 'a', 'variety', 'of', 'considerably', 'more', 'complicated', 'models', 'in', 'addition', 'we', 'study', 'the', 'microscopic', 'basis', 'of', 'synchronization', 'above', 'threshold', 'and', 'detail', 'the', 'counterintuitive', 'subtleties', 'relating', 'measurements', 'of', 'time', 'averaged', 'frequencies', 'and', 'mean', 'field', 'oscillations', 'most', 'notably', 'we', 'observe', 'a', 'state', 'of', 'suprathreshold', 'partial', 'synchronization', 'in', 'which', 'timeaveraged', 'frequency', 'measurements', 'from', 'individual', 'oscillators', 'do', 'not', 'correspond', 'to', 'the', 'frequency', 'of', 'macroscopic', 'oscillations', 'observed', 'in', 'the', 'population']] | [-0.18597722980104245, 0.16177206187723922, -0.06425817229856666, 0.05370530697848433, -0.03973792275557151, -0.1289317131902163, 0.09311656822728065, 0.36355636899287885, -0.24000667318289812, -0.2559222152456641, 0.06519639217205202, -0.23883641207447417, -0.18297617182565423, 0.18631332692636463, -0.02434774162247777, 0.024430632918105964, 0.015948098772563615, 0.05523823381764277, -0.07500242541293399, -0.14439396800903173, 0.2948976064996364, 0.007740310221337355, 0.2986081693894588, 0.00790445435201176, 0.09402411517400582, -0.04538272043618445, 0.007304215287932983, 0.049529568929798325, -0.14164821254811474, 0.05078645532305997, 0.23013220012009977, 0.04515223831941302, 0.26651754633595165, -0.4393761525432078, -0.22446868758505353, 0.13185737617851162, 0.14123191032178092, 0.16199903834449986, -0.029001546257663553, -0.26102709660234935, 0.009730459321648455, -0.1217192831441375, -0.13147562777336974, -0.09245414522548134, 0.011305386625910895, 0.08616159171976435, -0.2490847413499768, 0.1521320476411627, 0.07899875798119375, 0.10739965492752022, -0.08052740695062452, -0.04885755886968512, -0.019231814126340816, 0.11791489385426618, 0.011601284994349743, -0.04551172007340938, 0.10884359468562672, -0.12824918516248895, -0.09396589792584284, 0.34368943041190503, -0.09152176797819825, -0.16887260363079035, 0.22578053162075007, -0.2155385541084867, -0.14915878417758413, 0.14165217162897953, 0.19291222487361384, 0.11266538697796372, -0.1329566773546573, 0.019970988981479493, -0.010779547148670715, 0.2080692224849302, 0.05664987857811726, 0.06672166170767294, 0.16152766719460487, 0.16259064461606054, 0.047661540988617794, 0.12362029936361628, -0.05926122075895994, -0.17356276931599357, -0.30697617387184156, -0.06664055503654079, -0.14164486091512327, 0.06777779222745896, -0.11017941021810447, -0.1981920993457047, 0.45761448203568134, 0.1588534664004468, 0.202351754058439, 0.08278156937583564, 0.23008149118305973, 0.16133608195321777, 0.0021733561602349464, 0.024526525772391602, 0.2551945155837949, 0.1656695580826356, 0.10966748557984829, -0.2738315026472824, 0.0751870554065905, 0.007237468324959851] |
707.2997 | Modelling chemical reactions using semiconductor quantum dots | We propose using semiconductor quantum dots for a simulation of chemical
reactions as electrons are redistributed among such artificial atoms. We show
that it is possible to achieve various reaction regimes and obtain different
reaction products by varying the speed of voltage changes applied to the gates
forming quantum dots. Considering the simplest possible reaction, $H_2+H\to
H+H_2$, we show how the necessary initial state can be obtained and what
voltage pulses should be applied to achieve a desirable final product. Our
calculations have been performed using the Pechukas gas approach, which can be
extended for more complicated reactions.
| cond-mat.mtrl-sci | we propose using semiconductor quantum dots for a simulation of chemical reactions as electrons are redistributed among such artificial atoms we show that it is possible to achieve various reaction regimes and obtain different reaction products by varying the speed of voltage changes applied to the gates forming quantum dots considering the simplest possible reaction h_2hto hh_2 we show how the necessary initial state can be obtained and what voltage pulses should be applied to achieve a desirable final product our calculations have been performed using the pechukas gas approach which can be extended for more complicated reactions | [['we', 'propose', 'using', 'semiconductor', 'quantum', 'dots', 'for', 'a', 'simulation', 'of', 'chemical', 'reactions', 'as', 'electrons', 'are', 'redistributed', 'among', 'such', 'artificial', 'atoms', 'we', 'show', 'that', 'it', 'is', 'possible', 'to', 'achieve', 'various', 'reaction', 'regimes', 'and', 'obtain', 'different', 'reaction', 'products', 'by', 'varying', 'the', 'speed', 'of', 'voltage', 'changes', 'applied', 'to', 'the', 'gates', 'forming', 'quantum', 'dots', 'considering', 'the', 'simplest', 'possible', 'reaction', 'h_2hto', 'hh_2', 'we', 'show', 'how', 'the', 'necessary', 'initial', 'state', 'can', 'be', 'obtained', 'and', 'what', 'voltage', 'pulses', 'should', 'be', 'applied', 'to', 'achieve', 'a', 'desirable', 'final', 'product', 'our', 'calculations', 'have', 'been', 'performed', 'using', 'the', 'pechukas', 'gas', 'approach', 'which', 'can', 'be', 'extended', 'for', 'more', 'complicated', 'reactions']] | [-0.07138610355611219, 0.17641133072872445, -0.07808595028623085, 0.06426313440867498, 0.01321284261714552, -0.19330401504508307, 0.04879946268845311, 0.43323407214634196, -0.2771598439778864, -0.3076505077253912, 0.020557783944916325, -0.2308361989436383, -0.11021190048339441, 0.2251896950651498, 0.0027251801424726997, 0.06574575573244353, 0.081148172315863, -0.005353937367188562, -0.03797919781681765, -0.25970036569099453, 0.28369040367404746, 0.04946531138152422, 0.23781140759280048, 0.07396226262520116, 0.07300052778872172, -0.06106506289971858, 0.0764244616094055, 0.02136152193967983, -0.12618524354401575, 0.0669089971469822, 0.2916451198452143, 0.06884388994070288, 0.18398482170071184, -0.5122900148757648, -0.2328685181234608, 0.10314039726616796, 0.16481197355363095, 0.16546065742317972, -0.07364954442561715, -0.2652144598553783, 0.07547508577273716, -0.19153532449194452, -0.07796496798562788, -0.1443893343747891, -0.00042951226080815817, 0.052418711846670345, -0.3068142892773618, 0.020228072328819444, -0.012802627828144996, 0.004930457726079543, -0.023020718678755245, -0.11425787458657143, -0.029318660585276934, 0.16201402447198412, -0.029395394884145904, 0.02298428238214704, 0.22836436607788518, -0.051799999257146394, -0.12265824941082944, 0.39247353151248593, -0.024328034966415966, -0.1910755898534637, 0.18321616433983304, -0.10833963184358225, -0.08947093683035717, 0.09687185495342944, 0.14840984756376632, 0.1250263395786439, -0.16689391839846046, 0.02616321232971572, 0.027895380190775258, 0.15310424697806232, 0.11542222745351724, 0.023961763879399477, 0.16724395680903775, 0.1684830301758094, 0.030721580996130083, 0.15438208787236363, -0.07252835248808194, -0.10460034671561197, -0.2332690943358946, -0.1595108679762187, -0.1578416726239909, 0.12604798179734306, -0.02740328181408989, -0.08714679989618124, 0.369724572741801, 0.15867931291115345, 0.16486893526576074, -0.051802630755887126, 0.2660356454848859, 0.14936274934809693, 0.07441955852111053, 0.03770812481315326, 0.2438936200204123, 0.15141492257537992, 0.06500533288440753, -0.23305124201398997, 0.09937175104788207, -0.04294439414804129] |
707.2998 | Building a Cooperative Communications System | In this paper, we present the results from over-the-air experiments of a
complete implementation of an amplify and forward cooperative communications
system. Our custom OFDM-based physical layer uses a distributed version of the
Alamouti block code, where the relay sends one branch of Alamouti encoded
symbols. First we show analytically and experimentally that amplify and forward
protocols are unaffected by carrier frequency offsets at the relay. This result
allows us to use a conventional Alamouti receiver without change for the
distributed relay system. Our full system implementation shows gains up to
5.5dB in peak power constrained networks. Thus, we can conclusively state that
even the simplest form of relaying can lead to significant gains in practical
implementations.
| cs.IT math.IT | in this paper we present the results from overtheair experiments of a complete implementation of an amplify and forward cooperative communications system our custom ofdmbased physical layer uses a distributed version of the alamouti block code where the relay sends one branch of alamouti encoded symbols first we show analytically and experimentally that amplify and forward protocols are unaffected by carrier frequency offsets at the relay this result allows us to use a conventional alamouti receiver without change for the distributed relay system our full system implementation shows gains up to 55db in peak power constrained networks thus we can conclusively state that even the simplest form of relaying can lead to significant gains in practical implementations | [['in', 'this', 'paper', 'we', 'present', 'the', 'results', 'from', 'overtheair', 'experiments', 'of', 'a', 'complete', 'implementation', 'of', 'an', 'amplify', 'and', 'forward', 'cooperative', 'communications', 'system', 'our', 'custom', 'ofdmbased', 'physical', 'layer', 'uses', 'a', 'distributed', 'version', 'of', 'the', 'alamouti', 'block', 'code', 'where', 'the', 'relay', 'sends', 'one', 'branch', 'of', 'alamouti', 'encoded', 'symbols', 'first', 'we', 'show', 'analytically', 'and', 'experimentally', 'that', 'amplify', 'and', 'forward', 'protocols', 'are', 'unaffected', 'by', 'carrier', 'frequency', 'offsets', 'at', 'the', 'relay', 'this', 'result', 'allows', 'us', 'to', 'use', 'a', 'conventional', 'alamouti', 'receiver', 'without', 'change', 'for', 'the', 'distributed', 'relay', 'system', 'our', 'full', 'system', 'implementation', 'shows', 'gains', 'up', 'to', '55db', 'in', 'peak', 'power', 'constrained', 'networks', 'thus', 'we', 'can', 'conclusively', 'state', 'that', 'even', 'the', 'simplest', 'form', 'of', 'relaying', 'can', 'lead', 'to', 'significant', 'gains', 'in', 'practical', 'implementations']] | [-0.22312398928474506, 0.012608475188934445, -0.04638698220188762, -0.02925777653481105, -0.08435028462052538, -0.2600007244779182, 0.13423268860988802, 0.4085724611349147, -0.28501909720091195, -0.22972559422286676, 0.056376255022016646, -0.23694490771131, -0.182721703899382, 0.1890716672200581, -0.08679187254466374, 0.02658019956715148, 0.07230744070718707, -0.003913805352379407, -0.04745720252033387, -0.25951603377952465, 0.28693655262709244, 0.1473862646199795, 0.34129635718297857, 0.0035910331644117832, 0.11677262543877266, 0.010160773448597896, 0.002723948869468837, -0.06671124991382761, -0.04828091316260819, 0.05321734848608873, 0.30258543742017757, 0.15422957105529977, 0.2369422228075564, -0.4313686716466628, -0.23637893258148387, 0.06433329583097507, 0.20892298660955616, 0.14975507603155386, -0.035841527736167715, -0.2531034972615026, 0.15349074320642855, -0.26401156231014317, -0.05682460619096548, -0.021756793079287583, -0.11003373282287142, 0.02694287576415608, -0.31499333052438333, 0.0245737922397956, 0.03381626698858876, 0.0035352552438090586, -0.017295268384824057, -0.0925360674345625, 0.031159559019905483, 0.16598592918960314, -0.04173383487134209, -0.010312544619503978, 0.10018404334350008, -0.04116792847193649, -0.14387067116632382, 0.34003737096771086, -0.050135002184482615, -0.20813548561699433, 0.13659243755682837, -0.07621654834091997, -0.10664000503461936, 0.14541260491863922, 0.24755118853123537, 0.0692124761608911, -0.13563942014047042, 0.022174744588294836, 0.004644198294985911, 0.2315284243126496, 0.0745950939940642, 0.11245832330515158, 0.15245422398057318, 0.1538546900867067, 0.09927219991443743, 0.16991496240471265, -0.10584032929759345, -0.12047749646770736, -0.2644283627962758, -0.13808847001175686, -0.19039095000259515, 0.01695715240604276, -0.0789610242049846, -0.04366461387313581, 0.39487224751240413, 0.19940205338884723, 0.11334510358724871, 0.0901122724934449, 0.39948122293270866, 0.08236761105543902, 0.08711086932152252, 0.15904749889360292, 0.23179683473025417, 0.09944134636517164, 0.1461833832897888, -0.21888828431135685, 0.06211121483497193, -0.030034149565396767] |
707.2999 | Soft Modes at the Stacking Faults in SiC Crystals | We use first-principles calculations based on density functional theory to
determine and understand the driving force of the observed stacking fault
expansion in SiC. We verify the suggestion based on recent experiments that the
free energy difference between the faulted and the perfect structures is
responsible for this expansion, and show that its origin lies in a large
entropy associated with soft vibrational modes of the faulted SiC structure.
These soft modes involve shearing of SiC on a long length-scale and are absent
in related group IV semiconductors, such as Si, Ge and C.
| cond-mat.mtrl-sci | we use firstprinciples calculations based on density functional theory to determine and understand the driving force of the observed stacking fault expansion in sic we verify the suggestion based on recent experiments that the free energy difference between the faulted and the perfect structures is responsible for this expansion and show that its origin lies in a large entropy associated with soft vibrational modes of the faulted sic structure these soft modes involve shearing of sic on a long lengthscale and are absent in related group iv semiconductors such as si ge and c | [['we', 'use', 'firstprinciples', 'calculations', 'based', 'on', 'density', 'functional', 'theory', 'to', 'determine', 'and', 'understand', 'the', 'driving', 'force', 'of', 'the', 'observed', 'stacking', 'fault', 'expansion', 'in', 'sic', 'we', 'verify', 'the', 'suggestion', 'based', 'on', 'recent', 'experiments', 'that', 'the', 'free', 'energy', 'difference', 'between', 'the', 'faulted', 'and', 'the', 'perfect', 'structures', 'is', 'responsible', 'for', 'this', 'expansion', 'and', 'show', 'that', 'its', 'origin', 'lies', 'in', 'a', 'large', 'entropy', 'associated', 'with', 'soft', 'vibrational', 'modes', 'of', 'the', 'faulted', 'sic', 'structure', 'these', 'soft', 'modes', 'involve', 'shearing', 'of', 'sic', 'on', 'a', 'long', 'lengthscale', 'and', 'are', 'absent', 'in', 'related', 'group', 'iv', 'semiconductors', 'such', 'as', 'si', 'ge', 'and', 'c']] | [-0.14780268855293857, 0.11232063618112118, -0.05863226090181381, 0.029162241809783464, -0.01970007965103426, -0.08805070979461233, 0.04399989825113617, 0.41999585205253137, -0.26113484398600584, -0.2604015369285294, 0.054897430136135995, -0.28048650478508247, -0.18552796166771626, 0.1452279036017531, 0.032509958752965994, 0.006884167108937424, 0.014697997784830302, -0.016813236110387965, -0.06304060824790057, -0.15911620669809984, 0.2991862200012312, 0.06447068834677339, 0.32501940977353444, 0.1081074790860665, 0.043017653946546795, 0.00020392068433872562, -0.018645979989161517, 0.031287808962007786, -0.1666434778730655, 0.12849973349217722, 0.20269111375463136, -0.0007362772383667687, 0.2117629170819047, -0.4951499276100955, -0.21070262321092664, 0.014626689542560502, 0.083768327507448, 0.09354858222526517, -0.057491167823714696, -0.19993124048824998, 0.11863787343448147, -0.11317362797823041, -0.08790369884685632, -0.06967957199927657, 0.010008893114455204, 0.020151351360564538, -0.21346121444676489, 0.11816175752245088, 0.033308098840705576, 0.0541455217997359, -0.10830675204844273, -0.11650403007924398, -0.062369101487615326, 0.0686502094935388, 0.05328445698065247, -0.013962904694787365, 0.16061517010576667, -0.07828342418949258, -0.13132912544731765, 0.39808040797868943, -0.07064607171765176, -0.11661960871176834, 0.23063753312949012, -0.1361841944720041, -0.14553893506626023, 0.12763409093121422, 0.11194030427624115, 0.12708136308913495, -0.0721979249383947, 0.10425060239132553, 0.035279074415968274, 0.17851435020565987, 0.07951560214736518, 0.06408290730472258, 0.21326741194748816, 0.14424961328536193, 5.4799297705609745e-05, 0.10170113835285635, -0.12348395256397433, -0.057606173240817446, -0.29863043370200915, -0.18599191800433587, -0.2276374947804799, 0.0500487240744715, -0.07452074567056038, -0.23464546727878538, 0.3506270122950887, 0.11994416737790278, 0.19027425606358558, -0.016891950198964393, 0.24718042760294803, 0.0857427854405498, 0.11244863615138456, 0.059089977061375976, 0.26627505332865614, 0.1625426527350507, 0.02240508766547638, -0.273683739355468, 0.07794935635831009, 0.028879248678307743] |
707.3 | Analytical solutions for black-hole critical behaviour | Dynamical Einstein cluster is a spherical self-gravitating system of
counterrotating particles, which may expand, oscillate and collapse. This
system exhibits critical behaviour in its collapse at the threshold of black
hole formation. It appears when the specific angular momentum of particles is
tuned finely to the critical value. We find the unique exact self-similar
solution at the threshold. This solution begins with a regular surface,
involves timelike naked singularity formation and asymptotically approaches a
static self-similar cluster.
| gr-qc | dynamical einstein cluster is a spherical selfgravitating system of counterrotating particles which may expand oscillate and collapse this system exhibits critical behaviour in its collapse at the threshold of black hole formation it appears when the specific angular momentum of particles is tuned finely to the critical value we find the unique exact selfsimilar solution at the threshold this solution begins with a regular surface involves timelike naked singularity formation and asymptotically approaches a static selfsimilar cluster | [['dynamical', 'einstein', 'cluster', 'is', 'a', 'spherical', 'selfgravitating', 'system', 'of', 'counterrotating', 'particles', 'which', 'may', 'expand', 'oscillate', 'and', 'collapse', 'this', 'system', 'exhibits', 'critical', 'behaviour', 'in', 'its', 'collapse', 'at', 'the', 'threshold', 'of', 'black', 'hole', 'formation', 'it', 'appears', 'when', 'the', 'specific', 'angular', 'momentum', 'of', 'particles', 'is', 'tuned', 'finely', 'to', 'the', 'critical', 'value', 'we', 'find', 'the', 'unique', 'exact', 'selfsimilar', 'solution', 'at', 'the', 'threshold', 'this', 'solution', 'begins', 'with', 'a', 'regular', 'surface', 'involves', 'timelike', 'naked', 'singularity', 'formation', 'and', 'asymptotically', 'approaches', 'a', 'static', 'selfsimilar', 'cluster']] | [-0.19408175292388571, 0.13145898704646858, -0.14130706729725692, 0.10142014956996813, -0.07827856633570288, -0.16011519360737028, 0.005820399863863146, 0.2977597325217801, -0.2086968572036206, -0.24758808799813709, 0.0543048141695039, -0.29148446599190886, -0.07700162487975382, 0.10484319966431561, 0.0239735683479177, 0.05559961414856643, 0.03451091872358864, 0.07618897828249285, -0.10014729004643567, -0.19729817953783196, 0.4033716018735008, 0.08166357138127621, 0.2452985190441711, 0.008585120127959684, 0.0843747312372381, -0.06362896149542618, 0.07506683433742879, 0.05155837159700595, -0.21466812534959284, -0.03147536375886434, 0.17376900993154518, 0.09125273334854223, 0.2739467648124056, -0.3622775531990768, -0.17745517095091282, 0.08586458279448864, 0.23821687097237867, 0.16147726694841616, -0.06319463755572577, -0.24244405034258237, 0.07266869308281836, -0.17124409442948926, -0.2794839431616393, -0.0010361674042530479, 0.07832798543204735, 0.012664991709125507, -0.243503606382322, 0.150704870169813, 0.08343377971663382, -0.05750807753292384, -0.12155336098195138, 0.010711082629254692, -0.06559672076013182, 0.07348023679042416, 0.047936121709402896, 0.05054419030520049, 0.23582519671891805, -0.12061535141146561, -0.02544286342748961, 0.363988183813726, -0.01936836468581981, -0.1776709427403939, 0.21345181735353425, -0.24449126937656435, -0.061754887355128664, 0.2102397620381618, 0.1190577515630753, 0.1489939903326381, -0.1008784293914108, 0.07185762798165685, 0.006413445191143395, 0.16754183417500615, 0.13798429528190814, -0.033327395810032044, 0.3969019136040822, 0.19657517399626795, 0.05618428908191718, 0.1644508032152405, -0.03952058032155037, -0.14955998594304185, -0.279970686471501, -0.09962273884244117, -0.13629129559237074, 0.11012074846907385, -0.15599245865876157, -0.25767594747632355, 0.32508057147845043, 0.05596055576518063, 0.18315809013249426, 0.03208210014635334, 0.2254668107594956, 0.1137942960002012, 0.04591332114144386, 0.11984753011205754, 0.2933744765189174, 0.07873765957336147, 0.1598393621479536, -0.2673023225710872, -0.017046645111343885, 0.05518912203464802] |
707.3001 | Optimality of feedback control strategies for qubit purification | Recently two papers [K. Jacobs, Phys. Rev. A {\bf 67}, 030301(R) (2003); H.
M. Wiseman and J. F. Ralph, New J. Physics {\bf 8}, 90 (2006)] have derived
control strategies for rapid purification of qubits, optimized with respect to
various goals. In the former paper the proof of optimality was not
mathematically rigorous, while the latter gave only heuristic arguments for
optimality. In this paper we provide rigorous proofs of optimality in all
cases, by applying simple concepts from optimal control theory, including
Bellman equations and verification theorems.
| quant-ph | recently two papers k jacobs phys rev a bf 67 030301r 2003 h m wiseman and j f ralph new j physics bf 8 90 2006 have derived control strategies for rapid purification of qubits optimized with respect to various goals in the former paper the proof of optimality was not mathematically rigorous while the latter gave only heuristic arguments for optimality in this paper we provide rigorous proofs of optimality in all cases by applying simple concepts from optimal control theory including bellman equations and verification theorems | [['recently', 'two', 'papers', 'k', 'jacobs', 'phys', 'rev', 'a', 'bf', '67', '030301r', '2003', 'h', 'm', 'wiseman', 'and', 'j', 'f', 'ralph', 'new', 'j', 'physics', 'bf', '8', '90', '2006', 'have', 'derived', 'control', 'strategies', 'for', 'rapid', 'purification', 'of', 'qubits', 'optimized', 'with', 'respect', 'to', 'various', 'goals', 'in', 'the', 'former', 'paper', 'the', 'proof', 'of', 'optimality', 'was', 'not', 'mathematically', 'rigorous', 'while', 'the', 'latter', 'gave', 'only', 'heuristic', 'arguments', 'for', 'optimality', 'in', 'this', 'paper', 'we', 'provide', 'rigorous', 'proofs', 'of', 'optimality', 'in', 'all', 'cases', 'by', 'applying', 'simple', 'concepts', 'from', 'optimal', 'control', 'theory', 'including', 'bellman', 'equations', 'and', 'verification', 'theorems']] | [-0.09302295261161701, 0.031549064046435656, -0.06201595345233706, -0.01770907887337922, -0.09482923739364948, -0.20881751270151172, 0.13206143984597862, 0.2938464765019458, -0.14929602334902076, -0.3703965829804422, 0.07699208515937087, -0.20933306697841692, -0.1416857496717538, 0.19011732199394557, -0.15211528800856108, 0.07617395655412612, 0.03277508173962177, -0.09083994249137514, -0.08001528820558183, -0.3314662319246744, 0.1835815415238619, 0.0586238374141441, 0.26541447936859647, 0.029319117991146684, 0.0973334423127188, 0.04651808039413701, -0.07352291280938976, -0.02756366743985915, -0.25207139758862174, 0.07690426760792048, 0.3154948922516457, 0.15352143491778908, 0.3196029893688633, -0.39301485041606016, -0.1419169724244496, 0.040680358203759565, 0.06684622754631885, 0.08281140745852957, 0.02876261786568439, -0.313007528411931, 0.07219597158000815, -0.17297878392554564, -0.11705807591627898, -0.1218203376957226, 0.128824506169078, 0.007789633391376841, -0.28344431571962164, 0.08892493729276219, 0.15427831241903806, 0.12132755566880792, -0.003619065852809012, -0.15612014653375264, 0.031382371295489715, 0.009293687960732428, -0.02465165143393665, 0.05789618241739856, 0.06340620042649152, -0.019314625474420942, -0.19304527545711775, 0.2897789639303054, -0.005212010847854203, -0.14763316986600644, 0.20528073746700312, -0.044122739727127144, -0.18069414675621123, 0.10793386347961195, 0.08755738605027912, 0.1539148229238545, -0.2311109990823543, 0.16254238411650362, -0.08635876245325667, 0.10219199760635009, 0.14647784654650536, 0.021321190921884114, 0.06680118574910722, 0.04415664856118717, 0.06336867349655849, 0.09229961045129204, 0.022688174997616946, -0.13444973006523375, -0.3457977201678555, -0.1610474269676568, -0.16626383608405146, 0.07067283163741686, -0.008609275386773115, -0.057712134915864334, 0.36093970135539427, 0.13946882114162262, 0.11349486271668782, 0.05848580721937034, 0.19682964078825096, 0.09742386393709344, -0.0663767937067682, 0.16207812598039364, 0.2801350285245598, 0.2363608626290171, 0.1538380781408057, -0.12978244840766934, 0.019272510759832186, 0.14847726504928593] |
707.3002 | SIC-POVMs exist in all dimensions | This paper has been withdrawn by the author due to mathematical errors.
| quant-ph | this paper has been withdrawn by the author due to mathematical errors | [['this', 'paper', 'has', 'been', 'withdrawn', 'by', 'the', 'author', 'due', 'to', 'mathematical', 'errors']] | [-0.05991168568531672, -0.03814795062256356, -0.12641795227924982, -0.03290496662763568, -0.18924452178180218, -0.06636718225975831, 0.010577274884174889, 0.29822139294507605, -0.2852592154716452, -0.3941233555475871, 0.1461226404644549, -0.28531206178013235, -0.17482459001863995, 0.03478868864476681, -0.42118767835199833, 0.14885079550246397, 0.04839200619608164, -0.11244667476663987, 0.0006662521821757158, -0.35749178655290353, 0.32078605993107584, 0.19165161810815334, 0.24919544781247774, 0.21780064593379697, 0.03343468679425617, -0.1009083950969701, -0.15686550565684834, -0.004495984564224879, -0.14364295390745005, 0.1318646026775241, 0.2769701269765695, -0.02080893231322989, 0.4798581103483836, -0.41154900193214417, -0.2547878281523784, 0.14367938786745071, 0.18020931972811619, 0.24001173240443072, -0.07913833352116247, -0.4054498691111803, 0.20371528854593635, -0.3555635390803218, -0.1135388397378847, -0.011454635532572865, 0.16548295210426053, -0.14169290623006722, -0.07079887475507955, 0.06529639513852696, 0.18101713185509047, 0.22086449743558964, 0.11299378518015146, -0.17976660343507925, 0.1004071830927084, 0.175823664603134, 0.2607073653489351, 0.13461827863163003, -0.021523675105224054, 0.01844989665551111, -0.0995061284241577, 0.3893978235622247, 0.12117445515468717, -0.25236805450792116, 0.07480806298553944, -0.013542204513214529, -0.17139175006498894, 0.18634797104944786, 0.1660412015238156, -0.00314641910760353, -0.3267214484512806, 0.23488884349353611, 0.003605472311998407, 0.1539683279891809, 0.22317057677234212, -0.06943800579756498, 0.09788120087857048, 0.11571918769429128, -0.03833227953873575, 0.18124134124567112, -0.009222965066631636, -0.005035359878093004, -0.15994521602988243, -0.14603626852234206, -0.24363269936293364, 0.039084473702435694, 0.2769753843313083, -0.09559043178645273, 0.42479398225744563, 0.2145442689458529, 0.0960205184140553, -0.037102620117366314, 0.3387166950851679, 0.16504022734200893, 0.04687991893539826, -0.017039368860423565, 0.3398084372359638, 0.20421708811772987, 0.2230140732911726, -0.05762991184989611, 0.2991479703535636, 0.18244246734927097] |
707.3003 | Energy Dependence of Scattering Ground State Polar Molecules | We explore the total cross section of ground state polar molecules in an
electric field at various energies, focusing on RbCs and RbK. An external
electric field polarizes the molecules and induces strong dipolar interactions
leading to non-zero partial waves contributing to the scattering even as the
collision energy goes to zero. This results in the need to compute scattering
problems with many different values of total M to converge the total cross
section. An accurate and efficient approximate total cross section is
introduced and used to study the low field temperature dependence. To
understand the scattering of the polar molecules we compare a semi-classical
cross section with quantum unitarity limit. This comparison leads to the
ability to characterize the scattering based on the value of the electric field
and the collision energy.
| physics.atom-ph | we explore the total cross section of ground state polar molecules in an electric field at various energies focusing on rbcs and rbk an external electric field polarizes the molecules and induces strong dipolar interactions leading to nonzero partial waves contributing to the scattering even as the collision energy goes to zero this results in the need to compute scattering problems with many different values of total m to converge the total cross section an accurate and efficient approximate total cross section is introduced and used to study the low field temperature dependence to understand the scattering of the polar molecules we compare a semiclassical cross section with quantum unitarity limit this comparison leads to the ability to characterize the scattering based on the value of the electric field and the collision energy | [['we', 'explore', 'the', 'total', 'cross', 'section', 'of', 'ground', 'state', 'polar', 'molecules', 'in', 'an', 'electric', 'field', 'at', 'various', 'energies', 'focusing', 'on', 'rbcs', 'and', 'rbk', 'an', 'external', 'electric', 'field', 'polarizes', 'the', 'molecules', 'and', 'induces', 'strong', 'dipolar', 'interactions', 'leading', 'to', 'nonzero', 'partial', 'waves', 'contributing', 'to', 'the', 'scattering', 'even', 'as', 'the', 'collision', 'energy', 'goes', 'to', 'zero', 'this', 'results', 'in', 'the', 'need', 'to', 'compute', 'scattering', 'problems', 'with', 'many', 'different', 'values', 'of', 'total', 'm', 'to', 'converge', 'the', 'total', 'cross', 'section', 'an', 'accurate', 'and', 'efficient', 'approximate', 'total', 'cross', 'section', 'is', 'introduced', 'and', 'used', 'to', 'study', 'the', 'low', 'field', 'temperature', 'dependence', 'to', 'understand', 'the', 'scattering', 'of', 'the', 'polar', 'molecules', 'we', 'compare', 'a', 'semiclassical', 'cross', 'section', 'with', 'quantum', 'unitarity', 'limit', 'this', 'comparison', 'leads', 'to', 'the', 'ability', 'to', 'characterize', 'the', 'scattering', 'based', 'on', 'the', 'value', 'of', 'the', 'electric', 'field', 'and', 'the', 'collision', 'energy']] | [-0.14118376281112432, 0.13967667949590323, -0.043428736425939723, 0.07654373649826371, -0.033666438011704644, -0.048723984313638585, 0.011375224283420221, 0.34638506343546216, -0.24108337780068578, -0.3127038269898945, -0.00900387260677727, -0.3086541528372388, -0.04527687494418955, 0.15261425012617574, 0.043220720908611565, 0.04712972689791551, 0.017634073044768626, 0.08047038153570174, -0.049187193052227, -0.21696385180864736, 0.3121286177153426, 0.10699840265595795, 0.2858250396802349, 0.1680538623236624, 0.08886541580235151, 0.08126163586170616, 0.020059844843090924, -0.005899430259614063, -0.1537905483807724, 0.13329097138073548, 0.23031081567357356, -0.002413149625483088, 0.15895813677978135, -0.4735229985466353, -0.13597910017776477, 0.11521983538103059, 0.11691594225550561, 0.1495345576589269, -0.009268577534467318, -0.2491430106425756, 0.017906204059446946, -0.15616436948460577, -0.15557100337359325, -0.08665797746341143, 0.04053249625012951, 0.03157776256470024, -0.2708102458303696, 0.039848906084758585, -0.0034416783793612305, 0.016459927314724353, -0.10126845073305014, -0.13579366723061503, -0.022892941413552297, 0.10254051854581873, 0.0965027993359372, 0.04839922412547206, 0.17772765328085288, -0.1643820439545872, -0.0806430365603165, 0.35713875927451183, -0.1052247283462071, -0.16407818006985309, 0.19402778395574147, -0.15396474332625704, -0.040815612927947505, 0.23122559888008282, 0.22240412002779486, 0.11869334639181361, -0.12757454075171312, 0.07922430652262874, 0.026646366768299526, 0.1619557663238138, 0.10983886620155851, 0.021247084116864306, 0.1821101629840476, 0.11603298291732046, 0.06360377297041714, 0.11960079061056494, -0.16223847980548003, -0.10875179179895081, -0.2999272652222474, -0.15862933864991646, -0.12028147278815732, 0.07390424758686047, -0.04044613741652049, -0.1614674094546222, 0.3318720819722665, 0.15752840527207276, 0.25365029544310463, -3.6555167315597824e-05, 0.3280081916828045, 0.179810805070298, 0.05411718831978794, 0.04956685472892499, 0.2927157098630485, 0.22595890342867128, 0.10497116259670347, -0.2791236012340768, 0.016226761837847027, 0.005414311444961039] |
707.3004 | Electronic transport in graphene: A semi-classical approach including
midgap states | Using the semi-classical Boltzmann theory, we calculate the conductivity as
function of the carrier density. As usually, we include the scattering from
charged impurities, but conclude that the estimated impurity density is too low
in order to explain the experimentally observed mobilities. We thus propose an
additional scattering mechanism involving midgap states which leads to a
similar k-dependence of the relaxation time as charged impurities. The new
scattering mechanism can account for the experimental findings such as the
sublinear behavior of the conductivity versus gate voltage and the increase of
the minimal conductivity for clean samples. We also discuss temperature
dependent scattering due to acoustic phonons.
| cond-mat.mes-hall | using the semiclassical boltzmann theory we calculate the conductivity as function of the carrier density as usually we include the scattering from charged impurities but conclude that the estimated impurity density is too low in order to explain the experimentally observed mobilities we thus propose an additional scattering mechanism involving midgap states which leads to a similar kdependence of the relaxation time as charged impurities the new scattering mechanism can account for the experimental findings such as the sublinear behavior of the conductivity versus gate voltage and the increase of the minimal conductivity for clean samples we also discuss temperature dependent scattering due to acoustic phonons | [['using', 'the', 'semiclassical', 'boltzmann', 'theory', 'we', 'calculate', 'the', 'conductivity', 'as', 'function', 'of', 'the', 'carrier', 'density', 'as', 'usually', 'we', 'include', 'the', 'scattering', 'from', 'charged', 'impurities', 'but', 'conclude', 'that', 'the', 'estimated', 'impurity', 'density', 'is', 'too', 'low', 'in', 'order', 'to', 'explain', 'the', 'experimentally', 'observed', 'mobilities', 'we', 'thus', 'propose', 'an', 'additional', 'scattering', 'mechanism', 'involving', 'midgap', 'states', 'which', 'leads', 'to', 'a', 'similar', 'kdependence', 'of', 'the', 'relaxation', 'time', 'as', 'charged', 'impurities', 'the', 'new', 'scattering', 'mechanism', 'can', 'account', 'for', 'the', 'experimental', 'findings', 'such', 'as', 'the', 'sublinear', 'behavior', 'of', 'the', 'conductivity', 'versus', 'gate', 'voltage', 'and', 'the', 'increase', 'of', 'the', 'minimal', 'conductivity', 'for', 'clean', 'samples', 'we', 'also', 'discuss', 'temperature', 'dependent', 'scattering', 'due', 'to', 'acoustic', 'phonons']] | [-0.08459896511038027, 0.20688756099006464, -0.0637261704278161, 0.09469285745388951, -0.032660999072865, -0.1372747439320006, 0.0910527089628268, 0.35439914964438185, -0.2884156615736912, -0.2853657120206165, 0.019486659925808815, -0.3343648317375414, -0.12424107850968556, 0.15465307401774345, 0.003206355519206175, 0.047075377236876007, -0.04207040871743921, -0.014757129425218082, -0.06961507076740195, -0.20208939563324851, 0.2804448106809396, 0.0820827260415755, 0.32390200446869405, 0.1674105823083939, 0.04426907477812525, 0.05497878589140216, 0.05019777466049901, 0.03877052857281359, -0.11238075013280427, 0.053510848535466414, 0.24244021339218993, -0.05215947679463633, 0.14959536685239314, -0.48247825679421985, -0.23993888528103818, 0.030344615369718872, 0.17653767258491157, 0.20178459059196646, -0.09571313615207437, -0.22747070820264095, 0.029924360165407636, -0.14407820382401487, -0.12903009639736615, -0.1067767582991916, 0.014373490929533288, -0.008406156579028148, -0.2656432563913459, 0.15572923113661158, 0.021818060981426038, -0.018609156542158913, -0.137944495377904, -0.1233255232086862, -0.0181407621943058, 0.06039318776626869, 0.09047688895019369, -0.00398564458943306, 0.17951238785105986, -0.12632817230275217, -0.08891873077471864, 0.3531202790415231, -0.10660918801693457, -0.13162209928246602, 0.1863157289752842, -0.17069895319500059, -0.023676178874975105, 0.13906469414854106, 0.17179514796314937, 0.10698158836062506, -0.16215246276191944, 0.07129751458815695, -0.021133360837340215, 0.1521724107200807, 0.037519242737512545, 0.10085610204095126, 0.20443805878243917, 0.16855095242114984, 0.028711072964382904, 0.15439588841894325, -0.14680728325971737, -0.004896502381735394, -0.300340069510605, -0.1491871600847621, -0.2103866151235295, 0.09124852444115535, -0.08347320399356387, -0.19953148121471112, 0.38299546862583395, 0.20591336934122187, 0.26592767205229906, 0.03652854663438498, 0.2642769487091463, 0.21048110766107883, 0.10031321614910409, 0.03731999914864746, 0.22903342720808656, 0.152567155195734, 0.10483632543352696, -0.33972584337813183, 0.0945747175587798, -0.005691977922874942] |
707.3005 | Search for the Rare Decays $J/\psi \to D_{S}^{-} \pi^{+}$, $J/\psi \to
D^{-} \pi^{+}$, and $J/\psi \to \bar D^{0} \bar K^{0}$ | Rare decay modes $J/\psi \to D_{S}^{-} \pi^{+} + c.c.$, $J/\psi \to D^{-}
\pi^{+} + c.c.$, and $J/\psi \to \bar D^{0} \bar K^{0} + c.c.$ are searched for
using 5.77$\times 10^{7}$ $J/\psi$ events collected with the BESII detector at
the BEPC. No signal above background is observed. We present upper limits on
the branching fractions $B(J/\psi \to D_{S}^{-} \pi^{+})$ $<$
1.4$\times10^{-4}$, $B(J/\psi \to D^{-} \pi^{+})$ $<7.5\times10^{-5}$, and
$B(J/\psi \to \bar D^{0} \bar K^{0})$ $<$ 1.7$\times10^{-4}$ at the 90%
confidence level.
| hep-ex | rare decay modes jpsi to d_s pi cc jpsi to d pi cc and jpsi to bar d0 bar k0 cc are searched for using 577times 107 jpsi events collected with the besii detector at the bepc no signal above background is observed we present upper limits on the branching fractions bjpsi to d_s pi 14times104 bjpsi to d pi 75times105 and bjpsi to bar d0 bar k0 17times104 at the 90 confidence level | [['rare', 'decay', 'modes', 'jpsi', 'to', 'd_s', 'pi', 'cc', 'jpsi', 'to', 'd', 'pi', 'cc', 'and', 'jpsi', 'to', 'bar', 'd0', 'bar', 'k0', 'cc', 'are', 'searched', 'for', 'using', '577times', '107', 'jpsi', 'events', 'collected', 'with', 'the', 'besii', 'detector', 'at', 'the', 'bepc', 'no', 'signal', 'above', 'background', 'is', 'observed', 'we', 'present', 'upper', 'limits', 'on', 'the', 'branching', 'fractions', 'bjpsi', 'to', 'd_s', 'pi', '14times104', 'bjpsi', 'to', 'd', 'pi', '75times105', 'and', 'bjpsi', 'to', 'bar', 'd0', 'bar', 'k0', '17times104', 'at', 'the', '90', 'confidence', 'level']] | [-0.1040761729882558, 0.22170138708634735, -0.09275543506014837, 0.126434352480143, -0.016843569222582528, -0.14861477686934274, 0.15788960874986466, 0.23534170308545843, -0.17204733935427174, -0.17577170594340216, -0.10821983061590526, -0.47834659903629184, 0.14011652663043916, 0.089592289833403, 0.13229492499352727, 0.1442393715148919, 0.08371159511503495, 0.019373183011090103, -0.012175721481557272, -0.15933591762736235, 0.09739816020408722, -0.019130487125749662, 0.13785430675449029, 0.08013339764247202, -0.10774803426984238, -0.03642496226151308, -0.05716614036068116, -0.1588729226527965, -0.2718413180850242, -0.05535500071789712, 0.3404998833740972, 0.15173156244986474, -0.024657685119078225, -0.2625241463825311, 0.12452347645829495, 0.2236556003686704, 0.18916419632605289, -0.010066769672685291, 0.06832399631831285, -0.46524569917827435, 0.32647530090267934, -0.135284177250905, 0.010237097223480679, 0.022724226930446616, 0.2093355867450368, -0.21735469813216224, -0.34992523983835355, 0.1003719588665113, -0.11452793855577299, 0.07941730679866016, 0.04402115445405449, -0.37301548524466277, -0.023105216199812824, -0.08321881244494898, 0.04949027517083267, 0.26163044688810133, 0.25715926614245527, -0.02855652507573162, -0.1868279281850547, 0.34866255827962533, -0.11354338939178875, -0.1742472431737266, 0.17686857071335185, -0.30913040538841524, -0.11220461015959513, 0.29935988993065, 0.2859040376658899, -0.02079750011891943, -0.17833933541200392, 0.1155514281756589, 0.021762543651339127, 0.20544538279510524, 0.18029043274893336, 0.09154507554015018, 0.08777272517072063, 0.1866374240888359, -0.07548964829885796, -0.011076404355874616, -0.1649066700810592, 0.049944262275446766, -0.41058028941457353, -0.09619364162830457, 0.05984389429835424, 0.16556646651269435, -0.00334211981700644, 0.031132470184860574, 0.2598344432062482, -0.10906917118301539, 0.40809248383507796, 0.03873078415667868, 0.2755506604986444, 0.06821308697714176, -0.030173142440617085, 0.13950911054566298, 0.3136038715083611, 0.2670827422877901, 0.10855136541904856, -0.3281044708756245, 0.05001989456391192, -0.05534103133537079] |
707.3006 | Spin effects in $p\bar p$ interaction and their possible use to polarize
antiproton beams | Low energy $p\bar p$ interaction is considered taking into account the
polarization of both particles. The corresponding cross sections are calculated
using the Paris nucleon-antinucleon optical potential. Then they are applied to
the analysis of the polarization buildup which is due to the interaction of
stored antiprotons with polarized protons of a hydrogen target. It is shown
that, at realistic parameters of a storage ring and a target, the filtering
mechanism provides a noticeable polarization in a time comparable with the beam
lifetime.
| hep-ph nucl-th physics.acc-ph | low energy pbar p interaction is considered taking into account the polarization of both particles the corresponding cross sections are calculated using the paris nucleonantinucleon optical potential then they are applied to the analysis of the polarization buildup which is due to the interaction of stored antiprotons with polarized protons of a hydrogen target it is shown that at realistic parameters of a storage ring and a target the filtering mechanism provides a noticeable polarization in a time comparable with the beam lifetime | [['low', 'energy', 'pbar', 'p', 'interaction', 'is', 'considered', 'taking', 'into', 'account', 'the', 'polarization', 'of', 'both', 'particles', 'the', 'corresponding', 'cross', 'sections', 'are', 'calculated', 'using', 'the', 'paris', 'nucleonantinucleon', 'optical', 'potential', 'then', 'they', 'are', 'applied', 'to', 'the', 'analysis', 'of', 'the', 'polarization', 'buildup', 'which', 'is', 'due', 'to', 'the', 'interaction', 'of', 'stored', 'antiprotons', 'with', 'polarized', 'protons', 'of', 'a', 'hydrogen', 'target', 'it', 'is', 'shown', 'that', 'at', 'realistic', 'parameters', 'of', 'a', 'storage', 'ring', 'and', 'a', 'target', 'the', 'filtering', 'mechanism', 'provides', 'a', 'noticeable', 'polarization', 'in', 'a', 'time', 'comparable', 'with', 'the', 'beam', 'lifetime']] | [-0.10732599774919764, 0.16069664628979896, -0.11320623880005386, 0.08067115065108715, 0.012976958868037685, -0.11549257521281939, -0.01746085750679654, 0.3879273617752345, -0.25231725344411937, -0.3016480322455965, -0.008343406600866422, -0.31058561011969327, 0.018861570440412284, 0.16499109605484338, 0.08063225219228182, 0.02163538068016789, 0.06091229964878006, 0.03795960356750672, -0.007617087907112956, -0.20201132429135313, 0.2568149199956153, 0.13268001614340458, 0.2945928368717432, 0.11815445279388363, 0.09174030898587711, 0.0504591736173908, -0.02278062035273536, 0.0012146668026156455, -0.05774391221251768, 0.11167955662247288, 0.24074057533254242, 0.056504788387746335, 0.17435705575934915, -0.4360560492264578, -0.1788853615051113, 0.13855909512389497, 0.10219015559204013, 0.132262719269135, -0.08247416746993382, -0.2708952948675457, 0.048902296901579545, -0.16843150616118527, -0.11419510482586022, -0.03955304716904479, 0.07760751283873456, 0.0575638452926314, -0.3075471929195954, 0.01634249571396644, 0.021634720467838896, 0.011705780917980585, -0.1088320642277733, -0.1372892443786364, -0.0848110327441021, 0.06824541505403726, 0.03403472901793219, 0.05740801480048931, 0.1671719082648002, -0.10865154492399509, -0.052042194563581286, 0.4340259316770068, -0.04914831091840583, -0.14835551064685884, 0.1360981093203447, -0.17331066062808576, -0.018692869880988477, 0.22966164415590015, 0.21054862783548522, 0.08469892997878144, -0.1390616283527609, 0.07239972624096021, 0.009604934423443783, 0.17905377421292465, 0.08061326703572848, 0.03413053120048829, 0.2071981858013265, 0.19779998006815291, 0.004398447680581608, 0.11698116941085782, -0.15615114400230617, -0.05545007597363318, -0.313478042876505, -0.11595764381429517, -0.1385838798561459, 0.05326311602341348, -0.028768488121638354, -0.0641594646980352, 0.3831552844157959, 0.08496366441249847, 0.23456462046288581, -0.041503313130766425, 0.35398368719202206, 0.13781243824422448, 0.10814641543428402, 0.05833670209128275, 0.28140441664909743, 0.1508938230304833, 0.11740275758531797, -0.24179633074799126, 0.07964893833296485, -0.041960597829332195] |
707.3007 | Relation between three-qubit entanglement invariants and two-qubit
concurrence | In this Brief Report we show the relation between three-qubit entanglement
invariants and two-qubit concurrence with the help of projective measurements.
How to use these invariants to represent the entanglement property of
three-qubit pure states is also investigated.
| quant-ph | in this brief report we show the relation between threequbit entanglement invariants and twoqubit concurrence with the help of projective measurements how to use these invariants to represent the entanglement property of threequbit pure states is also investigated | [['in', 'this', 'brief', 'report', 'we', 'show', 'the', 'relation', 'between', 'threequbit', 'entanglement', 'invariants', 'and', 'twoqubit', 'concurrence', 'with', 'the', 'help', 'of', 'projective', 'measurements', 'how', 'to', 'use', 'these', 'invariants', 'to', 'represent', 'the', 'entanglement', 'property', 'of', 'threequbit', 'pure', 'states', 'is', 'also', 'investigated']] | [-0.1506067758769189, 0.1847558061004077, -0.07852004549319022, 0.04447285429035362, 0.020861959673072163, -0.22201987270167783, 0.052646710059458486, 0.3687180741445014, -0.24175060040464527, -0.2820369109854494, 0.0233316389617118, -0.2654420286784635, -0.15097780329616448, 0.1868945869960283, -0.07098996472593985, 0.11334017865163715, 0.07571215515245537, 0.017435102037301187, -0.19105386944781794, -0.29693530034273863, 0.40198348246906934, -0.016192046680340643, 0.28001025103424726, 0.11486616613049257, 0.06405650914989804, -0.03277197126054058, 0.025337804353942995, -0.03383557900394264, -0.18910018089962632, 0.09505522235658166, 0.33522533818981365, 0.1780858079559709, 0.10250892745036828, -0.4127015048441918, -0.08587643825203965, 0.1450683379447774, 0.03982990338025909, 0.1730228140950203, 1.2819679748070867e-05, -0.3478862521679778, -0.018674298287614396, -0.21589162435970807, -0.11168542313144396, -0.18570762514871986, 0.02547967850573753, -0.060894609183857314, -0.1743119368819814, 0.12753382226449167, 0.03883038740605116, 0.10401547447729267, 0.03297266680257101, 0.03232800637028719, -0.04814772068915006, 0.11640305344113394, -0.08624403088623167, -0.039672815596292675, 0.10692546312010993, -0.06862638493093025, -0.21743314731927393, 0.27818872490407603, -0.03824967871371068, -0.24414547478878185, 0.1551969610675434, -0.16247154289464416, -0.18308660062029958, -0.04453598127063168, 0.09003477141653236, 0.09476076360595853, -0.0894004155538584, 0.005562696800456922, -0.04650055818063648, 0.18376970124479972, 0.02804240444675088, 0.1770346979120452, 0.14282252963044142, 0.0015468737110495567, 0.05750724984528987, 0.32289987777997003, -0.019029005283587856, -0.10274703673234112, -0.33707154694160346, -0.3128369230728008, -0.19503650286749594, 0.14252531764979817, -0.06099013941275189, -0.07310145641186912, 0.46313687619802196, 0.13222252115558245, 0.1497206100336227, 0.05951028917671034, 0.22486420358090023, 0.03910578164504841, 0.01810093428694496, 0.0739182225600081, 0.28020941456289666, 0.25181287252589274, 0.018391289552183526, -0.29968743120614244, 0.06057300033832067, 0.054949594539050996] |
707.3008 | The asymptotic limits of zero modes of massless Dirac operators | Asymptotic behaviors of zero modes of the massless Dirac operator
$H=\alpha\cdot D + Q(x)$ are discussed, where
$\alpha= (\alpha_1, \alpha_2, \alpha_3)$ is the triple of $4 \times 4$ Dirac
matrices, $ D=\frac{1}{i} \nabla_x$, and $Q(x)=\big(q_{jk} (x) \big)$ is a
$4\times 4$ Hermitian matrix-valued function with
$| q_{jk}(x) | \le C < x >^{-\rho} $, $\rho >1$.
We shall show that for every zero mode $f$, the asymptotic limit of
$|x|^2f(x)$ as $|x| \to +\infty$ exists. The limit is expressed in terms of an
integral of $Q(x)f(x)$.
| math.SP math.AP | asymptotic behaviors of zero modes of the massless dirac operator halphacdot d qx are discussed where alpha alpha_1 alpha_2 alpha_3 is the triple of 4 times 4 dirac matrices dfrac1i nabla_x and qxbigq_jk x big is a 4times 4 hermitian matrixvalued function with q_jkx le c x rho rho 1 we shall show that for every zero mode f the asymptotic limit of x2fx as x to infty exists the limit is expressed in terms of an integral of qxfx | [['asymptotic', 'behaviors', 'of', 'zero', 'modes', 'of', 'the', 'massless', 'dirac', 'operator', 'halphacdot', 'd', 'qx', 'are', 'discussed', 'where', 'alpha', 'alpha_1', 'alpha_2', 'alpha_3', 'is', 'the', 'triple', 'of', '4', 'times', '4', 'dirac', 'matrices', 'dfrac1i', 'nabla_x', 'and', 'qxbigq_jk', 'x', 'big', 'is', 'a', '4times', '4', 'hermitian', 'matrixvalued', 'function', 'with', 'q_jkx', 'le', 'c', 'x', 'rho', 'rho', '1', 'we', 'shall', 'show', 'that', 'for', 'every', 'zero', 'mode', 'f', 'the', 'asymptotic', 'limit', 'of', 'x2fx', 'as', 'x', 'to', 'infty', 'exists', 'the', 'limit', 'is', 'expressed', 'in', 'terms', 'of', 'an', 'integral', 'of', 'qxfx']] | [-0.25150102291986143, 0.19922504851746378, -0.0418137298374613, 0.029032467158095963, 0.025228621469609237, -0.1975727472643091, 0.010842874885310192, 0.3157274613937212, -0.22033556849016128, -0.1843278122172263, 0.05818099522101063, -0.35595376406972473, -0.14071454810658218, 0.12426095166105174, 0.0020961149948070176, 0.026167295105453278, -0.01919451985206153, 0.12732728299483456, -0.1555109097892922, -0.21974741525293603, 0.32564489981411276, -0.09971758494203961, 0.14681571608918995, 0.030656871398457804, 0.10419180193865621, 0.006501943212807984, 0.09056444107428999, -0.09074995153885637, -0.183678387026039, 0.00730365510350345, 0.24399112210281798, 0.07917099653718036, 0.2138687301225759, -0.2856072084266359, -0.10866098389866434, 0.16408146954947025, 0.22660601690310883, -0.12155936069383814, 0.06462203738959255, -0.21942449593287264, 0.15177674617970716, -0.1452571236830507, -0.21659201768862485, -0.029211311236124585, 0.14288687917114412, -0.0016495193027563997, -0.3702890413838464, 0.09340223137641677, 0.07948269994577041, 0.028679319518945506, 0.0121508759864908, -0.26414217282325736, -0.0573759522238696, 0.07128942671005388, 0.060307748845426015, 0.10104357600967223, 0.08405116801952466, -0.07857882839979956, -0.024956561813785416, 0.34062237643661936, -0.1270392007269972, -0.2289506675725853, 0.08356798770585777, -0.23517945991526987, -0.11282548646291567, 0.10792634369352379, 0.05754394483016301, 0.17104377769361678, -0.04886503696340967, 0.29097516811374147, -0.05166228510741446, 0.15168384352472383, 0.09187892312813248, 0.026190212908880534, 0.11129253737414507, 0.07687399141188409, 0.07270551438213678, 0.033541856409126034, -0.03223413528522124, 0.028000982471968274, -0.3892572209981547, -0.18725439213921088, -0.18726901916552624, 0.2245339913344061, -0.1932795464713677, -0.1589363054246516, 0.29461261642643727, 0.04061200973149892, 0.2368567063649361, 0.07548553290197978, 0.14850642474689144, 0.22031381892235447, -0.03849167111046562, 0.0754638111243981, 0.13602568603095574, 0.17457456643554708, 0.07741906710371778, -0.17154288621040414, -0.06340200010359891, 0.08770382581782099] |
707.3009 | Is CHF triggered by the vapor recoil effect? | This paper deals with the triggering mechanism of the boiling crisis, a
transition from nucleate to film boiling. We observe the boiling crisis in pool
saturated boiling experimentally at nearly critical pressure to take advantage
of the slowness of the bubble growth and of the smallness of the Critical Heat
Flux (CHF) that defines the transition point. Such experiments require the
reduced gravity conditions. Close to the CHF, the slow growth of the individual
dry spots and their subsequent fusion on the transparent heater are observed
through the latter. As discussed in the paper, these observations are
consistent with numerical results obtained with the vapor recoil model of the
boiling crisis.
| physics.flu-dyn physics.class-ph | this paper deals with the triggering mechanism of the boiling crisis a transition from nucleate to film boiling we observe the boiling crisis in pool saturated boiling experimentally at nearly critical pressure to take advantage of the slowness of the bubble growth and of the smallness of the critical heat flux chf that defines the transition point such experiments require the reduced gravity conditions close to the chf the slow growth of the individual dry spots and their subsequent fusion on the transparent heater are observed through the latter as discussed in the paper these observations are consistent with numerical results obtained with the vapor recoil model of the boiling crisis | [['this', 'paper', 'deals', 'with', 'the', 'triggering', 'mechanism', 'of', 'the', 'boiling', 'crisis', 'a', 'transition', 'from', 'nucleate', 'to', 'film', 'boiling', 'we', 'observe', 'the', 'boiling', 'crisis', 'in', 'pool', 'saturated', 'boiling', 'experimentally', 'at', 'nearly', 'critical', 'pressure', 'to', 'take', 'advantage', 'of', 'the', 'slowness', 'of', 'the', 'bubble', 'growth', 'and', 'of', 'the', 'smallness', 'of', 'the', 'critical', 'heat', 'flux', 'chf', 'that', 'defines', 'the', 'transition', 'point', 'such', 'experiments', 'require', 'the', 'reduced', 'gravity', 'conditions', 'close', 'to', 'the', 'chf', 'the', 'slow', 'growth', 'of', 'the', 'individual', 'dry', 'spots', 'and', 'their', 'subsequent', 'fusion', 'on', 'the', 'transparent', 'heater', 'are', 'observed', 'through', 'the', 'latter', 'as', 'discussed', 'in', 'the', 'paper', 'these', 'observations', 'are', 'consistent', 'with', 'numerical', 'results', 'obtained', 'with', 'the', 'vapor', 'recoil', 'model', 'of', 'the', 'boiling', 'crisis']] | [-0.07994786610508019, 0.1933985469183205, -0.08072542152912901, -0.006582074996864272, -0.020215251363461483, -0.08243404641361521, 0.13460935739724822, 0.31404914638984044, -0.26611969285216686, -0.26854071989319883, 0.14651495819231747, -0.30966609487150637, -0.09220270447114164, 0.19656578887480539, -0.04460197383839939, 0.05244327230832061, 0.021087490370379644, 0.01728113368153572, -0.048230505865151145, -0.22866426445208154, 0.3261814779593601, 0.09580316170546654, 0.33243600913398974, 0.1140611613555266, 0.08208255524545707, -0.10840657511558216, 0.012365364763248074, -0.01571882562711835, -0.18534553763153805, 0.020609887266481244, 0.25449372932465897, 0.022475251755970822, 0.2371829639583289, -0.4987727790768888, -0.24834802902832226, 0.0878849369809367, 0.06435313402163284, 0.07494164575420965, -0.06990967819840554, -0.22509068507399108, 0.031145614322258142, -0.1397597531091657, -0.14797623199620494, -0.03852882707776787, -0.0459166823231892, -0.006954168404754947, -0.2526672224069501, 0.12704305378258698, 0.05096651231744201, 0.04974063203107935, -0.07606909252065527, -0.06723760300827725, -0.09274873686199253, 0.10656654520530824, 0.08853882254491485, 0.0006886326607216049, 0.23276570626022713, -0.15480683055005734, -0.02010463348690521, 0.371989874957918, -0.06488080810218512, -0.061212936265243066, 0.214839943097317, -0.21410491652283314, -0.050594214647840544, 0.19532828618612913, 0.14704978128324622, 0.0635300992929318, -0.10939590826731276, -0.053888859614301975, -0.0003889211839450909, 0.10222574606089987, 0.12174390882111012, -0.08830057449118646, 0.25005923642835637, 0.24834368552442068, 0.03172206601153153, 0.15388594194302788, -0.1151019597272934, -0.12427959983606261, -0.3077040718247493, -0.15082784990574494, -0.13721345751000955, 0.03759477072739386, -0.10081643986632116, -0.1706542601506855, 0.3695894046309027, 0.1757974496346202, 0.211252146249486, -0.002875895258290945, 0.2702042823321782, 0.08367742154524906, 0.03518289350694767, 0.049894576917427616, 0.2905548045785074, 0.07446400932799857, 0.1696941449814518, -0.2780115095004943, 0.1227591420913971, 0.023817343626859354] |
707.301 | Gale duality bounds for roots of polynomials with nonnegative
coefficients | We bound the location of roots of polynomials that have nonnegative
coefficients with respect to a fixed but arbitrary basis of the vector space of
polynomials of degree at most $d$. For this, we interpret the basis polynomials
as vector fields in the real plane, and at each point in the plane analyze the
combinatorics of the Gale dual vector configuration. This approach permits us
to incorporate arbitrary linear equations and inequalities among the
coefficients in a unified manner to obtain more precise bounds on the location
of roots. We apply our technique to bound the location of roots of Ehrhart and
chromatic polynomials. Finally, we give an explanation for the clustering seen
in plots of roots of random polynomials.
| math.CO | we bound the location of roots of polynomials that have nonnegative coefficients with respect to a fixed but arbitrary basis of the vector space of polynomials of degree at most d for this we interpret the basis polynomials as vector fields in the real plane and at each point in the plane analyze the combinatorics of the gale dual vector configuration this approach permits us to incorporate arbitrary linear equations and inequalities among the coefficients in a unified manner to obtain more precise bounds on the location of roots we apply our technique to bound the location of roots of ehrhart and chromatic polynomials finally we give an explanation for the clustering seen in plots of roots of random polynomials | [['we', 'bound', 'the', 'location', 'of', 'roots', 'of', 'polynomials', 'that', 'have', 'nonnegative', 'coefficients', 'with', 'respect', 'to', 'a', 'fixed', 'but', 'arbitrary', 'basis', 'of', 'the', 'vector', 'space', 'of', 'polynomials', 'of', 'degree', 'at', 'most', 'd', 'for', 'this', 'we', 'interpret', 'the', 'basis', 'polynomials', 'as', 'vector', 'fields', 'in', 'the', 'real', 'plane', 'and', 'at', 'each', 'point', 'in', 'the', 'plane', 'analyze', 'the', 'combinatorics', 'of', 'the', 'gale', 'dual', 'vector', 'configuration', 'this', 'approach', 'permits', 'us', 'to', 'incorporate', 'arbitrary', 'linear', 'equations', 'and', 'inequalities', 'among', 'the', 'coefficients', 'in', 'a', 'unified', 'manner', 'to', 'obtain', 'more', 'precise', 'bounds', 'on', 'the', 'location', 'of', 'roots', 'we', 'apply', 'our', 'technique', 'to', 'bound', 'the', 'location', 'of', 'roots', 'of', 'ehrhart', 'and', 'chromatic', 'polynomials', 'finally', 'we', 'give', 'an', 'explanation', 'for', 'the', 'clustering', 'seen', 'in', 'plots', 'of', 'roots', 'of', 'random', 'polynomials']] | [-0.1501674447276552, 0.0540459974155965, -0.12323478690038124, 0.03512146208086051, -0.11910939992133839, -0.1075449875012661, 0.05908849362943632, 0.30949612381712843, -0.28437629436472583, -0.2368177654245907, 0.0798086140033168, -0.2589453288237564, -0.18120317320184162, 0.18220097993810971, -0.04298430572768363, 0.047708533421973696, -0.009113957864853243, 0.09025132968866577, -0.08664559103587331, -0.295856978004061, 0.32095030501950533, 0.03578756598484081, 0.20161486654154334, 0.041589171284188826, 0.13070559829405587, 0.03876419604833548, -0.05316898957559412, -0.029925396274241695, -0.15190393981592934, 0.16827103572237925, 0.2785029566048858, 0.1621937378581303, 0.2075384304470693, -0.3934504567955931, -0.102175494201947, 0.18233408232529957, 0.161183206383915, 0.07515478260271873, 0.004525298338436793, -0.22132164243763933, 0.06790072460037967, -0.09710788734094725, -0.23415761360277731, -0.0781626756535843, 0.03693390808378657, 0.05873611842592557, -0.3062341034412384, 0.041217971981192626, 0.04619165946593663, 0.12039712187154995, -0.058501161784382326, -0.16354611423060608, 0.025407689367420973, 0.07879595461999997, -0.00844778369452494, 0.033395246358122674, 0.02723029024200514, -0.11902344210927064, -0.14848050951647263, 0.3683157067513093, -0.03267889355823475, -0.26957475968326133, 0.13724614854436368, -0.21587069750918697, -0.15087255115504378, 0.09784815849270671, 0.22957390613931541, 0.14320226449053736, -0.06703132330828036, 0.10284276997214571, -0.12379992307008554, 0.09996918336764793, 0.13220747221882145, 0.02599298974964768, 0.17035840037278832, 0.0093480557348812, 0.07842873083621574, 0.18022734612168279, -0.03954633585526608, -0.0869437622372061, -0.3084083261957858, -0.17513715980749112, -0.19355882591917178, -0.005011944837557773, -0.1923357189551704, -0.18856710797699633, 0.4275186035122412, 0.15462354265813094, 0.24587245263004054, 0.10085789161579063, 0.235314912108394, 0.14684146089324107, 0.050462448709489155, 0.04850012207619633, 0.1576367429147164, 0.2023993696163719, 0.0530325212671111, -0.14688099157065154, 0.059618867728083086, 0.15971528524532913] |
707.3011 | Far UV excitation of hydrogen and light emission; applications in
astrophysics | Assuming a spherical symmetry, the extreme UV emitted by a very hot source
ionizes low pressure molecular hydrogen making a transparent bubble of H II
(Protons and electrons). For an increase of radius, intensity of extreme UV and
temperature decrease, so that the plasma contains more and more atoms. A
spherical shell, mainly of neutral atoms (H I) appears. If this shell is
optically thick at Lyman frequencies of H I, it is superradiant and a
competition of modes selects modes tangent to a sphere for which many atoms are
excited. Thus, a shell of plasma emits, into a given direction, tangential rays
showing a ring in which selected modes are brighter. While at Lyman
frequencies, absorption of rays emitted by the source excites the atoms able to
amplify the superradiance, a more powerful amplification of superradiance
results from an induced scattering of the radial beams, which extends to feet
of lines and progressively to the whole spectrum. Thermodynamics says that the
brightness of radial and tangential beams tends to be equal; if the solid angle
of observation is much larger for the ring than for the source, almost the
whole light emitted by the source is transferred to the rings, and the source
becomes invisible. Paradoxically, a glow due to incoherent scattering and
impurities around the source remains visible. As the scattering decreases with
the decrease of the radial intensity, the brightness of the ring decreases with
radius. These characteristics are found in supernova remnant 1987A.
| physics.gen-ph | assuming a spherical symmetry the extreme uv emitted by a very hot source ionizes low pressure molecular hydrogen making a transparent bubble of h ii protons and electrons for an increase of radius intensity of extreme uv and temperature decrease so that the plasma contains more and more atoms a spherical shell mainly of neutral atoms h i appears if this shell is optically thick at lyman frequencies of h i it is superradiant and a competition of modes selects modes tangent to a sphere for which many atoms are excited thus a shell of plasma emits into a given direction tangential rays showing a ring in which selected modes are brighter while at lyman frequencies absorption of rays emitted by the source excites the atoms able to amplify the superradiance a more powerful amplification of superradiance results from an induced scattering of the radial beams which extends to feet of lines and progressively to the whole spectrum thermodynamics says that the brightness of radial and tangential beams tends to be equal if the solid angle of observation is much larger for the ring than for the source almost the whole light emitted by the source is transferred to the rings and the source becomes invisible paradoxically a glow due to incoherent scattering and impurities around the source remains visible as the scattering decreases with the decrease of the radial intensity the brightness of the ring decreases with radius these characteristics are found in supernova remnant 1987a | [['assuming', 'a', 'spherical', 'symmetry', 'the', 'extreme', 'uv', 'emitted', 'by', 'a', 'very', 'hot', 'source', 'ionizes', 'low', 'pressure', 'molecular', 'hydrogen', 'making', 'a', 'transparent', 'bubble', 'of', 'h', 'ii', 'protons', 'and', 'electrons', 'for', 'an', 'increase', 'of', 'radius', 'intensity', 'of', 'extreme', 'uv', 'and', 'temperature', 'decrease', 'so', 'that', 'the', 'plasma', 'contains', 'more', 'and', 'more', 'atoms', 'a', 'spherical', 'shell', 'mainly', 'of', 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707.3012 | Chaotic flows and cosmic dynamos in anisotropic pseudo-Riemannian
four-dimensional spacetime | It is shown that the existence of the cosmic kinematic fast dynamos in
Bianchi type IX rotating cosmological models, faces severe difficulties, due to
the fact that in these models rotation increases without bounds, which is
strictly forbidden by CMB astronomical date which imposes strong bounds on its
rotation with respect with its rapid expansion. The only way out of this
difficulty is to assume that at least one of the expansion directions of this
anisotropic universe decays as fast as the amplification rate of primordial
magnetic fields. A solution is found where only one direction of the
anisotropic universe expands while the other two remain constants. We compute
an amplification of the seed magnetic field in the case where Bianchi IX
degenerates into de Sitter metric, fields amplify from 10^{-6}G to 10^{-5}G in
spiral galaxies for a cosmological constant of the order
$|{\Lambda}|<10^{33}s^{-2}$ and considering that the age of universe of the
order of 10^{10}yrs. Another example is given by the ABC chaotic flows in the
pseudo-Riemannian spacetime representing the Kasner anisotropic nonsingular
universe.
| astro-ph | it is shown that the existence of the cosmic kinematic fast dynamos in bianchi type ix rotating cosmological models faces severe difficulties due to the fact that in these models rotation increases without bounds which is strictly forbidden by cmb astronomical date which imposes strong bounds on its rotation with respect with its rapid expansion the only way out of this difficulty is to assume that at least one of the expansion directions of this anisotropic universe decays as fast as the amplification rate of primordial magnetic fields a solution is found where only one direction of the anisotropic universe expands while the other two remain constants we compute an amplification of the seed magnetic field in the case where bianchi ix degenerates into de sitter metric fields amplify from 106g to 105g in spiral galaxies for a cosmological constant of the order lambda1033s2 and considering that the age of universe of the order of 1010yrs another example is given by the abc chaotic flows in the pseudoriemannian spacetime representing the kasner anisotropic nonsingular universe | [['it', 'is', 'shown', 'that', 'the', 'existence', 'of', 'the', 'cosmic', 'kinematic', 'fast', 'dynamos', 'in', 'bianchi', 'type', 'ix', 'rotating', 'cosmological', 'models', 'faces', 'severe', 'difficulties', 'due', 'to', 'the', 'fact', 'that', 'in', 'these', 'models', 'rotation', 'increases', 'without', 'bounds', 'which', 'is', 'strictly', 'forbidden', 'by', 'cmb', 'astronomical', 'date', 'which', 'imposes', 'strong', 'bounds', 'on', 'its', 'rotation', 'with', 'respect', 'with', 'its', 'rapid', 'expansion', 'the', 'only', 'way', 'out', 'of', 'this', 'difficulty', 'is', 'to', 'assume', 'that', 'at', 'least', 'one', 'of', 'the', 'expansion', 'directions', 'of', 'this', 'anisotropic', 'universe', 'decays', 'as', 'fast', 'as', 'the', 'amplification', 'rate', 'of', 'primordial', 'magnetic', 'fields', 'a', 'solution', 'is', 'found', 'where', 'only', 'one', 'direction', 'of', 'the', 'anisotropic', 'universe', 'expands', 'while', 'the', 'other', 'two', 'remain', 'constants', 'we', 'compute', 'an', 'amplification', 'of', 'the', 'seed', 'magnetic', 'field', 'in', 'the', 'case', 'where', 'bianchi', 'ix', 'degenerates', 'into', 'de', 'sitter', 'metric', 'fields', 'amplify', 'from', '106g', 'to', '105g', 'in', 'spiral', 'galaxies', 'for', 'a', 'cosmological', 'constant', 'of', 'the', 'order', 'lambda1033s2', 'and', 'considering', 'that', 'the', 'age', 'of', 'universe', 'of', 'the', 'order', 'of', '1010yrs', 'another', 'example', 'is', 'given', 'by', 'the', 'abc', 'chaotic', 'flows', 'in', 'the', 'pseudoriemannian', 'spacetime', 'representing', 'the', 'kasner', 'anisotropic', 'nonsingular', 'universe']] | [-0.16584801593071355, 0.14067010171221894, -0.05354626832336101, 0.0638950719905888, -0.11523654275288471, -0.11060494780836551, -0.04901314778435125, 0.31692716449154595, -0.2576442634299225, -0.2500283826089389, 0.10149040469439495, -0.24729460645790044, -0.0748933616384993, 0.19372795727319284, 0.0024966176819982214, -0.0465061948022326, -0.009632563227895281, 0.042295422254270215, -0.033684134153606146, -0.2836560898654249, 0.3594285239589352, 0.07831367920556595, 0.24937075718354457, -0.04213659252871819, 0.09396002175437146, -0.09000647290895096, -0.028938631303716086, 0.0347305926046135, -0.13926642671892975, 0.05867384770626708, 0.183888262260789, 0.11573287002968392, 0.226730996441376, -0.4061136853294393, -0.2199679262710014, 0.12524307118944092, 0.18688170713065677, 0.1419874326557438, -0.061577227599838094, -0.2681800123368729, 0.07329391636158948, -0.1235222886854815, -0.1683693700564239, -0.03377803448436922, 0.030343060494088324, -0.019015597815105874, -0.2432789404935747, 0.12654124010042045, 0.08055889996904557, 0.0054973638374250745, -0.08521105039923996, -0.040815716673959196, -0.024265110296213387, 0.06621281498494004, 0.1416936123177054, 0.06117663149199734, 0.09846528124123424, -0.16638103799492046, -0.07028323506150459, 0.4112400729666771, -0.10450410009348345, -0.14969639726133877, 0.13288387236443774, -0.1928843948586354, -0.12659205157916073, 0.11961298961343103, 0.11576594722980763, 0.12284981955994846, -0.11039326360416894, 0.16339214871846716, 0.02400807360983911, 0.1380202486529688, 0.11081198721887231, 0.0077279823686862955, 0.26271040097546544, 0.07881875281529016, 0.08724734468137943, 0.08735580510908006, -0.06993695488872513, -0.08967375407006183, -0.32459025521294316, -0.14191159672161693, -0.15699935998401546, 0.09858511845618917, -0.19616834124854046, -0.21627300537263333, 0.36431164219921636, 0.11432297913045716, 0.18770130035182128, -0.009372396064879147, 0.2871200126714229, 0.049997527981002016, 0.04297002180038031, 0.10928967125939927, 0.31544191131874316, 0.15270410450794492, 0.10810960925216491, -0.22624227712388456, 0.06383299002944723, 0.037302601513872734] |
707.3013 | Application of probabilistic PCR5 Fusion Rule for Multisensor Target
Tracking | This paper defines and implements a non-Bayesian fusion rule for combining
densities of probabilities estimated by local (non-linear) filters for tracking
a moving target by passive sensors. This rule is the restriction to a strict
probabilistic paradigm of the recent and efficient Proportional Conflict
Redistribution rule no 5 (PCR5) developed in the DSmT framework for fusing
basic belief assignments. A sampling method for probabilistic PCR5 (p-PCR5) is
defined. It is shown that p-PCR5 is more robust to an erroneous modeling and
allows to keep the modes of local densities and preserve as much as possible
the whole information inherent to each densities to combine. In particular,
p-PCR5 is able of maintaining multiple hypotheses/modes after fusion, when the
hypotheses are too distant in regards to their deviations. This new p-PCR5 rule
has been tested on a simple example of distributed non-linear filtering
application to show the interest of such approach for future developments. The
non-linear distributed filter is implemented through a basic particles
filtering technique. The results obtained in our simulations show the ability
of this p-PCR5-based filter to track the target even when the models are not
well consistent in regards to the initialization and real cinematic.
| stat.AP | this paper defines and implements a nonbayesian fusion rule for combining densities of probabilities estimated by local nonlinear filters for tracking a moving target by passive sensors this rule is the restriction to a strict probabilistic paradigm of the recent and efficient proportional conflict redistribution rule no 5 pcr5 developed in the dsmt framework for fusing basic belief assignments a sampling method for probabilistic pcr5 ppcr5 is defined it is shown that ppcr5 is more robust to an erroneous modeling and allows to keep the modes of local densities and preserve as much as possible the whole information inherent to each densities to combine in particular ppcr5 is able of maintaining multiple hypothesesmodes after fusion when the hypotheses are too distant in regards to their deviations this new ppcr5 rule has been tested on a simple example of distributed nonlinear filtering application to show the interest of such approach for future developments the nonlinear distributed filter is implemented through a basic particles filtering technique the results obtained in our simulations show the ability of this ppcr5based filter to track the target even when the models are not well consistent in regards to the initialization and real cinematic | [['this', 'paper', 'defines', 'and', 'implements', 'a', 'nonbayesian', 'fusion', 'rule', 'for', 'combining', 'densities', 'of', 'probabilities', 'estimated', 'by', 'local', 'nonlinear', 'filters', 'for', 'tracking', 'a', 'moving', 'target', 'by', 'passive', 'sensors', 'this', 'rule', 'is', 'the', 'restriction', 'to', 'a', 'strict', 'probabilistic', 'paradigm', 'of', 'the', 'recent', 'and', 'efficient', 'proportional', 'conflict', 'redistribution', 'rule', 'no', '5', 'pcr5', 'developed', 'in', 'the', 'dsmt', 'framework', 'for', 'fusing', 'basic', 'belief', 'assignments', 'a', 'sampling', 'method', 'for', 'probabilistic', 'pcr5', 'ppcr5', 'is', 'defined', 'it', 'is', 'shown', 'that', 'ppcr5', 'is', 'more', 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'even', 'when', 'the', 'models', 'are', 'not', 'well', 'consistent', 'in', 'regards', 'to', 'the', 'initialization', 'and', 'real', 'cinematic']] | [-0.051415261274012615, 0.06828904163923699, -0.0962700525071854, 0.0728253208888838, -0.09054219261146126, -0.16207367282551832, 0.05537959389397516, 0.40438353342887684, -0.27363456099604566, -0.2944976336704806, 0.09939687137718861, -0.2242309334055813, -0.14438813019018526, 0.1711758469297097, -0.09773499738807097, 0.0874060991136596, 0.05788369977500481, 0.05474174506484698, -0.04015727625810541, -0.223986015170335, 0.2561950461843457, 0.10447168822686832, 0.31536560569627164, 0.005863337674870705, 0.13695372452434057, 0.04296101564183258, -0.08403551301990564, 0.026787214356367117, -0.06395998696967488, 0.13337588691128752, 0.26157290554474455, 0.15632123133430306, 0.3081497425356737, -0.4071696655394939, -0.21634209184214856, 0.0903564787398164, 0.13006747643917035, 0.12135282209805714, -0.0480990054083612, -0.27918819789894117, 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707.3014 | Situations d'apprentissage collectives instrument\'ees : \'etude de
pratiques dans l'enseignement sup\'erieur | Currently, educational platforms propose many tools of communication,
production, labour division or collective work management in order to support
collective activities. But it is not guaranteed that actors (instructional
designers, tutors or learner) are really using them. Our work, describe
characteristics of instrumented learning situations (ICLS) in the higher
education. Our intention is to determine: if ICLS are really existing; which
form they take (in terms of scenario, tools, type of activity...) ; if
recommendations resulting from research tasks are taken into account by
instructional designers and if the instructional designer prescribed activities
are really follow by learners or tutors? To answer these questions, we have
made a survey about ICLS actors uses.
| cs.CY | currently educational platforms propose many tools of communication production labour division or collective work management in order to support collective activities but it is not guaranteed that actors instructional designers tutors or learner are really using them our work describe characteristics of instrumented learning situations icls in the higher education our intention is to determine if icls are really existing which form they take in terms of scenario tools type of activity if recommendations resulting from research tasks are taken into account by instructional designers and if the instructional designer prescribed activities are really follow by learners or tutors to answer these questions we have made a survey about icls actors uses | [['currently', 'educational', 'platforms', 'propose', 'many', 'tools', 'of', 'communication', 'production', 'labour', 'division', 'or', 'collective', 'work', 'management', 'in', 'order', 'to', 'support', 'collective', 'activities', 'but', 'it', 'is', 'not', 'guaranteed', 'that', 'actors', 'instructional', 'designers', 'tutors', 'or', 'learner', 'are', 'really', 'using', 'them', 'our', 'work', 'describe', 'characteristics', 'of', 'instrumented', 'learning', 'situations', 'icls', 'in', 'the', 'higher', 'education', 'our', 'intention', 'is', 'to', 'determine', 'if', 'icls', 'are', 'really', 'existing', 'which', 'form', 'they', 'take', 'in', 'terms', 'of', 'scenario', 'tools', 'type', 'of', 'activity', 'if', 'recommendations', 'resulting', 'from', 'research', 'tasks', 'are', 'taken', 'into', 'account', 'by', 'instructional', 'designers', 'and', 'if', 'the', 'instructional', 'designer', 'prescribed', 'activities', 'are', 'really', 'follow', 'by', 'learners', 'or', 'tutors', 'to', 'answer', 'these', 'questions', 'we', 'have', 'made', 'a', 'survey', 'about', 'icls', 'actors', 'uses']] | [-0.03639500260136889, 0.10826720067988001, -0.09208133770152926, 0.10759380867446973, -0.22305335212565428, -0.2001103278557171, 0.057159623048002164, 0.44268305084135917, -0.21842588585734898, -0.36663397263535963, 0.07692357414530956, -0.2938196444447385, -0.16499412510893308, 0.1683807377100623, -0.1544096617809763, -0.0350677800181854, 0.07957835086563136, 0.05429618964054888, 0.0321634322135651, -0.3510187378186466, 0.29592726739688907, 0.02841272938530892, 0.30646199574195115, 0.03068776710175111, 0.03980965338165073, -0.03586913136781992, -0.06135807582333135, -0.032448681675305124, -0.07665939351168813, 0.14841890299534757, 0.4476120712060947, 0.2775367076142824, 0.40016671446418123, -0.4688323162096952, -0.1560305325214618, 0.07271723626347791, 0.15128767967689782, 0.024966066242736167, -0.02807834971879077, -0.3139726444912542, 0.06351667247378957, -0.2045821064010462, -0.08225415297576026, -0.13587050322842384, -0.025364166940562427, 0.006938073068990239, -0.24140836399497598, -0.09151097283133172, 0.07260801753208009, 0.1364411792622247, -0.050238199008163065, -0.1088763217558153, 0.0473452172591351, 0.24083397389663982, 0.07032216705172394, -0.0024150531057135333, 0.1975482742688785, -0.16818090916162223, -0.16448039480850898, 0.4173229053350432, 0.07622605860212518, -0.20640227478413312, 0.21603880743662426, -0.10446035140609768, -0.13803147274925973, 0.051258728058850726, 0.25254343807630775, 0.05810523007780181, -0.20829618794128432, 0.0056179935464959795, 0.01113392216003766, 0.1895073863457323, 0.05164833112420248, -0.004664003628671968, 0.24968821954930068, 0.17374307575145004, 0.027824438147425617, 0.030598135132874762, 0.06656241544338368, -0.09964695809425653, -0.2415574625982637, -0.13829907518811524, -0.1036742524863387, 0.0555889778834171, 0.020657120551212365, -0.10481642278110874, 0.31995365052508923, 0.1999170045497262, 0.0786578204736413, 0.02414745148208957, 0.329093102623509, 0.012218142226629425, 0.10995737874015633, 0.09736115988094493, 0.20056801725175838, -0.04127858691000646, 0.16242739923265098, -0.1128675875474333, 0.1376727989284388, 0.0034145486752095167] |
707.3015 | Application of Glow Discharge Aes for Investigation of Metal Ions and
Water in Biology and Medicine | AES VHF inductively coupled plasmatron may be applied to wide range of
studies. It enables rapid microanalysis of various solutions including
biological objects and peripheral blood serum. In addition, it may be used for
investigation of water desorption from solid bodies and for determination of
energetic metal-macromolecule complexes. Study of hydration energy and
hydration number by kinetic curves of water glow discharge atomic spectral
analysis of hydrogen (GD EAS analysis of hydrogen) desorption from Na-DNA
humidified fibers allowed to reveal that structural and conformational changes
in activation energy of hydrated water molecules increases by 0.65kcal/Mole of
water. The developed method of analysis of elements in solutions containing
high concentrations of organic materials allows systematic study of practically
healthy persons and reveals risk factors for several diseases. Microelemental
content of blood serum fractions showed that amount of not bounded with
ceruloplasmin copper was three times more at limphogranulomatose disease than
that in healthy persons.
| physics.bio-ph | aes vhf inductively coupled plasmatron may be applied to wide range of studies it enables rapid microanalysis of various solutions including biological objects and peripheral blood serum in addition it may be used for investigation of water desorption from solid bodies and for determination of energetic metalmacromolecule complexes study of hydration energy and hydration number by kinetic curves of water glow discharge atomic spectral analysis of hydrogen gd eas analysis of hydrogen desorption from nadna humidified fibers allowed to reveal that structural and conformational changes in activation energy of hydrated water molecules increases by 065kcalmole of water the developed method of analysis of elements in solutions containing high concentrations of organic materials allows systematic study of practically healthy persons and reveals risk factors for several diseases microelemental content of blood serum fractions showed that amount of not bounded with ceruloplasmin copper was three times more at limphogranulomatose disease than that in healthy persons | [['aes', 'vhf', 'inductively', 'coupled', 'plasmatron', 'may', 'be', 'applied', 'to', 'wide', 'range', 'of', 'studies', 'it', 'enables', 'rapid', 'microanalysis', 'of', 'various', 'solutions', 'including', 'biological', 'objects', 'and', 'peripheral', 'blood', 'serum', 'in', 'addition', 'it', 'may', 'be', 'used', 'for', 'investigation', 'of', 'water', 'desorption', 'from', 'solid', 'bodies', 'and', 'for', 'determination', 'of', 'energetic', 'metalmacromolecule', 'complexes', 'study', 'of', 'hydration', 'energy', 'and', 'hydration', 'number', 'by', 'kinetic', 'curves', 'of', 'water', 'glow', 'discharge', 'atomic', 'spectral', 'analysis', 'of', 'hydrogen', 'gd', 'eas', 'analysis', 'of', 'hydrogen', 'desorption', 'from', 'nadna', 'humidified', 'fibers', 'allowed', 'to', 'reveal', 'that', 'structural', 'and', 'conformational', 'changes', 'in', 'activation', 'energy', 'of', 'hydrated', 'water', 'molecules', 'increases', 'by', '065kcalmole', 'of', 'water', 'the', 'developed', 'method', 'of', 'analysis', 'of', 'elements', 'in', 'solutions', 'containing', 'high', 'concentrations', 'of', 'organic', 'materials', 'allows', 'systematic', 'study', 'of', 'practically', 'healthy', 'persons', 'and', 'reveals', 'risk', 'factors', 'for', 'several', 'diseases', 'microelemental', 'content', 'of', 'blood', 'serum', 'fractions', 'showed', 'that', 'amount', 'of', 'not', 'bounded', 'with', 'ceruloplasmin', 'copper', 'was', 'three', 'times', 'more', 'at', 'limphogranulomatose', 'disease', 'than', 'that', 'in', 'healthy', 'persons']] | [-0.040864704865049825, 0.16760565808068054, -0.02704168701028401, 0.0043357661295984245, 0.027433590785713512, -0.12938920907500023, 0.06961497038011313, 0.38373534972276035, -0.1898894986716678, -0.3259742273068106, 0.04474636066918941, -0.3190383375827829, -0.12370988843031228, 0.20342732786682333, -0.0554010040013472, 0.02337478320240169, 0.08725910597461956, -0.0363644536229077, 0.029256819475228218, -0.18229591835153916, 0.2295716074358269, 0.05880326797204042, 0.25516065737433935, 0.1003317829468083, 0.0706187764314834, -0.03873126848122558, -0.025890356813859497, 0.013527473466269471, -0.15388295585772366, 0.1485397517394508, 0.3417834975077091, 0.0925516362736203, 0.24628096100924587, -0.48367984190180496, -0.2862300623579555, 0.09896024712676031, 0.10603600725880824, 0.09537251162770632, -0.03828713573514235, -0.21909961620710688, 0.05640905204770231, -0.13507864070030534, -0.12125807444602754, -0.06550921894597343, 0.016074776032788528, 0.09573192287211281, -0.21751852105434583, 0.13428550009376597, -0.039105621315979375, 0.14956433598480717, -0.14026230498692147, -0.169795773014099, -0.08863906449767307, 0.12779983903935835, 0.09777228003116073, -0.04553240496662093, 0.2976170596289071, -0.12443139547847111, 0.004253450032273257, 0.38120904332656114, -0.04708092931291872, -0.09349576083823687, 0.25134534175457385, -0.1569147047246932, -0.11363303486507141, 0.29118294713427184, 0.14056132052005646, 0.11366286509154314, -0.21334858993194192, -0.028197245639701676, 0.01202896331410188, 0.2341423989399462, 0.16644139226047774, 0.0009608681382913444, 0.16635318507591412, 0.21259222289459226, 0.0283411254609205, 0.1357929400865278, -0.10572373732370702, -0.01862316265249172, -0.1633315093605307, -0.2323531634583314, -0.10212681126604611, 0.051667234334230226, -0.07359844596214464, -0.1752377120541791, 0.37850070909592654, 0.06296395222385842, 0.09637597273733164, -0.026146800125118445, 0.21848273846537908, -0.03374300461350563, 0.06662412858143374, -0.023581626837620058, 0.17998516372707044, 0.14479464287118438, 0.12142259151851004, -0.2654956219595152, 0.13261683483771677, 0.010812869195089317] |
707.3016 | Super-resolution in turbulent videos: making profit from damage | It is shown that one can make use of local instabilities in turbulent video
frames to enhance image resolution beyond the limit defined by the image
sampling rate. The paper outlines the processing algorithm, presents its
experimental verification on simulated and real-life videos and discusses its
potentials and limitations.
| physics.optics physics.comp-ph | it is shown that one can make use of local instabilities in turbulent video frames to enhance image resolution beyond the limit defined by the image sampling rate the paper outlines the processing algorithm presents its experimental verification on simulated and reallife videos and discusses its potentials and limitations | [['it', 'is', 'shown', 'that', 'one', 'can', 'make', 'use', 'of', 'local', 'instabilities', 'in', 'turbulent', 'video', 'frames', 'to', 'enhance', 'image', 'resolution', 'beyond', 'the', 'limit', 'defined', 'by', 'the', 'image', 'sampling', 'rate', 'the', 'paper', 'outlines', 'the', 'processing', 'algorithm', 'presents', 'its', 'experimental', 'verification', 'on', 'simulated', 'and', 'reallife', 'videos', 'and', 'discusses', 'its', 'potentials', 'and', 'limitations']] | [-0.09777440089608866, -0.006815849499282788, -0.08805388892639657, 0.05799950719383374, -0.05406438327413433, -0.11145728265828624, -0.008352930674196355, 0.42292684324237767, -0.292917227790672, -0.3110844717950237, 0.1292863281096845, -0.2415831134825641, -0.15484699394972046, 0.21926271907833159, -0.17964578888436056, 0.09689587826736043, 0.130514519422182, 0.026857713931145107, -0.032518117037620774, -0.2858970310653047, 0.2553774936466801, 0.09169057965734784, 0.3316090284580631, 0.06921503328889304, 0.13444808127396568, -0.014652389776417795, -0.09873989758518886, -0.045519705101543545, -0.11401116763962058, 0.12652775510309303, 0.2763079096164022, 0.22231644771194883, 0.2766092782079869, -0.4392665706346838, -0.22157875720259487, 0.04114471562444327, 0.17641158282699787, 0.09112056555720616, -0.061227270836789846, -0.3205406636436831, 0.11806703761828188, -0.12537263253969805, -0.033041779778669685, -0.12901864862259554, 0.00440274582871673, 0.02710551749534753, -0.2542220746566142, 0.06155376976393923, 0.05549363503042532, 0.07058712488458473, -0.03304959607918804, -0.0373303103165663, 0.03604219671414823, 0.1313618293450195, 0.0566880752045034, 0.041323636211835, 0.2114475532149782, -0.18351685176888594, -0.11968074324635827, 0.4490205274552715, -0.03214335158391266, -0.17443940983562523, 0.22276108022256547, -0.09507216820588374, -0.08963284580683221, 0.11750061516602504, 0.16525994634673913, 0.07857496920516904, -0.14374618794845076, 0.06500768925334156, 0.022843252392295673, 0.16727815693890563, 0.09524738402771098, 0.029710747520154228, 0.1848277547871884, 0.23979921247429994, 0.05725166064744093, 0.16579387696668962, -0.15198878546207384, -0.07470408481146608, -0.25330131238668546, -0.11758056446453746, -0.22111944690802876, -0.055867215979616254, -0.057114403712983736, -0.10357142882409734, 0.39110923480546594, 0.3026472621559336, 0.19171052747311032, 0.05220872688354278, 0.3887085403714861, 0.046225880111130525, 0.06663221299496232, 0.04232704722113451, 0.20049221076223314, 0.07184328517534447, 0.17414889508402165, -0.18267948792449065, 0.03246624916981982, 0.057941318993285605] |
707.3017 | Diamagnetism of doped two-leg ladders and probing the nature of their
commensurate phases | We study the magnetic orbital effect of a doped two-leg ladder in the
presence of a magnetic field component perpendicular to the ladder plane.
Combining both low-energy approach (bosonization) and numerical simulations
(density-matrix renormalization group) on the strong coupling limit (t-J
model), a rich phase diagram is established as a function of hole doping and
magnetic flux. Above a critical flux, the spin gap is destroyed and a Luttinger
liquid phase is stabilized. Above a second critical flux, a reentrance of the
spin gap at high magnetic flux is found. Interestingly, the phase transitions
are associated with a change of sign of the orbital susceptibility. Focusing on
the small magnetic field regime, the spin-gapped superconducting phase is
robust but immediately acquires algebraic transverse (i.e. along rungs) current
correlations which are commensurate with the 4k_F density correlations. In
addition, we have computed the zero-field orbital susceptibility for a large
range of doping and interactions ratio J/t : we found strong anomalies at low
J/t only in the vicinity of the commensurate fillings corresponding to delta =
1/4 and 1/2. Furthermore, the behavior of the orbital susceptibility reveals
that the nature of these insulating phases is different: while for delta = 1/4
a 4k_F charge density wave is confirmed, the delta = 1/2 phase is shown to be a
bond order wave.
| cond-mat.str-el cond-mat.supr-con | we study the magnetic orbital effect of a doped twoleg ladder in the presence of a magnetic field component perpendicular to the ladder plane combining both lowenergy approach bosonization and numerical simulations densitymatrix renormalization group on the strong coupling limit tj model a rich phase diagram is established as a function of hole doping and magnetic flux above a critical flux the spin gap is destroyed and a luttinger liquid phase is stabilized above a second critical flux a reentrance of the spin gap at high magnetic flux is found interestingly the phase transitions are associated with a change of sign of the orbital susceptibility focusing on the small magnetic field regime the spingapped superconducting phase is robust but immediately acquires algebraic transverse ie along rungs current correlations which are commensurate with the 4k_f density correlations in addition we have computed the zerofield orbital susceptibility for a large range of doping and interactions ratio jt we found strong anomalies at low jt only in the vicinity of the commensurate fillings corresponding to delta 14 and 12 furthermore the behavior of the orbital susceptibility reveals that the nature of these insulating phases is different while for delta 14 a 4k_f charge density wave is confirmed the delta 12 phase is shown to be a bond order wave | [['we', 'study', 'the', 'magnetic', 'orbital', 'effect', 'of', 'a', 'doped', 'twoleg', 'ladder', 'in', 'the', 'presence', 'of', 'a', 'magnetic', 'field', 'component', 'perpendicular', 'to', 'the', 'ladder', 'plane', 'combining', 'both', 'lowenergy', 'approach', 'bosonization', 'and', 'numerical', 'simulations', 'densitymatrix', 'renormalization', 'group', 'on', 'the', 'strong', 'coupling', 'limit', 'tj', 'model', 'a', 'rich', 'phase', 'diagram', 'is', 'established', 'as', 'a', 'function', 'of', 'hole', 'doping', 'and', 'magnetic', 'flux', 'above', 'a', 'critical', 'flux', 'the', 'spin', 'gap', 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'fillings', 'corresponding', 'to', 'delta', '14', 'and', '12', 'furthermore', 'the', 'behavior', 'of', 'the', 'orbital', 'susceptibility', 'reveals', 'that', 'the', 'nature', 'of', 'these', 'insulating', 'phases', 'is', 'different', 'while', 'for', 'delta', '14', 'a', '4k_f', 'charge', 'density', 'wave', 'is', 'confirmed', 'the', 'delta', '12', 'phase', 'is', 'shown', 'to', 'be', 'a', 'bond', 'order', 'wave']] | [-0.2647241409916508, 0.24060544344171864, -0.02271313059571656, 0.06343215885485902, -0.034386189792443206, -0.12535237488164394, 0.09598629106120724, 0.35344789030151097, -0.22800377757219528, -0.29543671413773187, 0.04944263327019548, -0.3328545128331623, -0.09571123274508864, 0.1402120218165995, 0.0929912192692023, -0.016122918325924763, -0.0489820135731457, 0.019562834977275796, -0.1818261944885038, -0.1686070553087457, 0.2952579194981674, 0.000833077419277591, 0.28807529166375323, 0.10368978802688178, 0.042383499608452745, 0.006703050974195961, 0.11676773895009386, 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707.3018 | On the Real Analyticity of the Scattering Operator for the Hartree
Equation | In this paper, we study the real analyticity of the scattering operator for
the Hartree equation $ i\partial_tu=-\Delta u+u(V*|u|^2)$. To this end, we
exploit interior and exterior cut-off in time and space, and combining with the
compactness argument to overcome difficulties which arise from absence of good
properties for the nonlinear Klein-Gordon equation, such as the finite speed of
propagation and ideal time decay estimate. Additionally, the method in this
paper allows us to simplify the proof of analyticity of the scattering operator
for the nonlinear Klein-Gordon equation with cubic nonlinearity in Kumlin.
| math.AP math-ph math.MP | in this paper we study the real analyticity of the scattering operator for the hartree equation ipartial_tudelta uuvu2 to this end we exploit interior and exterior cutoff in time and space and combining with the compactness argument to overcome difficulties which arise from absence of good properties for the nonlinear kleingordon equation such as the finite speed of propagation and ideal time decay estimate additionally the method in this paper allows us to simplify the proof of analyticity of the scattering operator for the nonlinear kleingordon equation with cubic nonlinearity in kumlin | [['in', 'this', 'paper', 'we', 'study', 'the', 'real', 'analyticity', 'of', 'the', 'scattering', 'operator', 'for', 'the', 'hartree', 'equation', 'ipartial_tudelta', 'uuvu2', 'to', 'this', 'end', 'we', 'exploit', 'interior', 'and', 'exterior', 'cutoff', 'in', 'time', 'and', 'space', 'and', 'combining', 'with', 'the', 'compactness', 'argument', 'to', 'overcome', 'difficulties', 'which', 'arise', 'from', 'absence', 'of', 'good', 'properties', 'for', 'the', 'nonlinear', 'kleingordon', 'equation', 'such', 'as', 'the', 'finite', 'speed', 'of', 'propagation', 'and', 'ideal', 'time', 'decay', 'estimate', 'additionally', 'the', 'method', 'in', 'this', 'paper', 'allows', 'us', 'to', 'simplify', 'the', 'proof', 'of', 'analyticity', 'of', 'the', 'scattering', 'operator', 'for', 'the', 'nonlinear', 'kleingordon', 'equation', 'with', 'cubic', 'nonlinearity', 'in', 'kumlin']] | [-0.08951790115485589, 0.055699031872467865, -0.10726717286225822, 0.06298751576105133, -0.16648510044647588, -0.07505934226016203, 0.009715163399879304, 0.30220253380636375, -0.31001882327513564, -0.2626170011030303, 0.11047890217095199, -0.27782570698262943, -0.1470683531298871, 0.16537296125251386, -0.01888900773289303, 0.10831050085317757, 0.04391568129261335, 0.012546475904269352, -0.09729018275005122, -0.19139592427656882, 0.4082470368593931, 0.0019862312513093156, 0.20735126993515426, 0.07777952744315068, 0.11351611110278302, 0.06675302575135397, 0.006187280169170764, -0.03886296208462833, -0.1526395077403221, 0.12743267903311384, 0.20829947307291957, 0.0635736524230904, 0.26808795277029274, -0.45828221759034526, -0.21402776989464958, 0.11718698311597109, 0.17858084112198816, 0.12610289324463034, -0.03504266840302282, -0.2942911422501008, 0.06050456089174582, -0.12021530369917552, -0.2483535996534758, -0.05913502229118927, -0.01262412905279133, 0.03576952303604533, -0.26299616185327374, 0.12239635254049466, 0.07873019444652729, -0.011011068522930146, -0.1345492516754247, -0.02891791338721911, 0.0365088984163271, 0.0572876927546329, 0.0683164583829542, -0.0015348430852302247, -4.056750589774715e-05, -0.11069882986291, -0.047691932734515934, 0.3615391647339695, -0.09445726442047292, -0.23486302081081603, 0.15751992890404332, -0.17956141264585312, -0.08987342147673998, 0.1077140744516833, 0.2133606407791376, 0.1140601162203691, -0.14201105606431763, 0.16533927601089493, 0.00477519608878841, 0.13179368189432555, 0.11709667968874177, 0.05439934241585433, 0.0616528634292384, 0.15291642360389232, 0.06673076333892014, 0.12671901010649486, -0.035576718714502124, -0.08098809361043903, -0.36317646615207194, -0.1903243568001522, -0.17025960206778512, 0.06754580855162608, -0.11583210317249824, -0.1788210409382979, 0.38035691190485116, 0.21403562683198188, 0.17303832214222187, 0.06793914834787655, 0.2849198868498206, 0.22116065261458667, 0.01812202465047853, 0.05077290324908164, 0.22924461915261216, 0.16915083235750597, 0.14804998690572876, -0.2874586060720806, -0.03303761906313917, 0.10615509350577162] |
707.3019 | Interacion of Heavy Metal Ions with C-Phycocyanin: Binding Isotherms and
Cooperative Effects | The binding constant of copper(II) ions to C-PC were determined at different
ionic strengths from binding isotherms by equilibrium dialysis and flame atomic
absorption spectroscopy. Fluorescence and absorbtion spectroscopy provides
insight of metal-C-phycocyanin interactions. Fluorescence measurements
demonstrate C-PC quenching of heavy metal ions emission intensities.
Stern-Volmer quenching constants were obtained from the linear quenching plots.
Blue shifts in the fluorescence spectra were observed during metal binding to
C-PC. It was shown, that between bound metal ions in C-PC there exists positive
cooperativity.
| physics.med-ph | the binding constant of copperii ions to cpc were determined at different ionic strengths from binding isotherms by equilibrium dialysis and flame atomic absorption spectroscopy fluorescence and absorbtion spectroscopy provides insight of metalcphycocyanin interactions fluorescence measurements demonstrate cpc quenching of heavy metal ions emission intensities sternvolmer quenching constants were obtained from the linear quenching plots blue shifts in the fluorescence spectra were observed during metal binding to cpc it was shown that between bound metal ions in cpc there exists positive cooperativity | [['the', 'binding', 'constant', 'of', 'copperii', 'ions', 'to', 'cpc', 'were', 'determined', 'at', 'different', 'ionic', 'strengths', 'from', 'binding', 'isotherms', 'by', 'equilibrium', 'dialysis', 'and', 'flame', 'atomic', 'absorption', 'spectroscopy', 'fluorescence', 'and', 'absorbtion', 'spectroscopy', 'provides', 'insight', 'of', 'metalcphycocyanin', 'interactions', 'fluorescence', 'measurements', 'demonstrate', 'cpc', 'quenching', 'of', 'heavy', 'metal', 'ions', 'emission', 'intensities', 'sternvolmer', 'quenching', 'constants', 'were', 'obtained', 'from', 'the', 'linear', 'quenching', 'plots', 'blue', 'shifts', 'in', 'the', 'fluorescence', 'spectra', 'were', 'observed', 'during', 'metal', 'binding', 'to', 'cpc', 'it', 'was', 'shown', 'that', 'between', 'bound', 'metal', 'ions', 'in', 'cpc', 'there', 'exists', 'positive', 'cooperativity']] | [-0.014541688511711488, 0.24192603134239712, -0.01626581969788804, 0.05989504405469806, 0.051724570596383676, -0.23483880266639184, 0.09964271163406932, 0.49645611505817483, -0.22249362895978086, -0.3198844358256018, -0.12700539501096456, -0.4012118067684365, -0.044023521950203974, 0.17181290481469513, 0.10411736209744611, -0.02585522157864438, 0.04650012727964808, -0.08574774490531396, -0.023419666546684356, -0.11906631964684268, 0.19377745584481293, 0.07336300182627675, 0.27213689121475193, 0.19433241025372236, 0.038000021032115194, -0.03726174707961395, 0.03576305671595037, -0.025847994009561746, -0.19055837947333787, 0.057926665847822106, 0.25995550324772426, 0.02163820886225612, 0.1715128708711285, -0.39152254828792293, -0.20035939484282775, 0.015202938011318537, 0.1577695621246541, 0.1520101456431511, -0.11981608373699365, -0.25720216173471677, -0.05901555523828224, -0.06153419979755985, -0.07031899713048781, -0.05693396429795726, 0.03411658539977155, 0.08344485254291399, -0.25929003504369363, 0.0913295757519886, -0.00915645315444074, 0.15966060907108548, -0.13505381411582842, -0.14631983423375605, -0.11703886518852762, 0.062082790229239584, 0.0054760565435122924, -0.040445295914168254, 0.3083796029577009, -0.017139027211355205, -0.0553628402520661, 0.36152396015362975, -0.1265553997622596, 0.00492933438983056, 0.18893561893959104, -0.21579223708537074, -0.1096673578478074, 0.31186375447353465, 0.074226596944586, 0.07497202855661328, -0.16169578156629463, -0.0014665060989949622, 0.04899358038250127, 0.21637157695712866, 0.1517516930392127, 0.05780466479237801, 0.15054007985824605, 0.1162151494120926, -0.06982471576581399, 0.12063776034815812, -0.12789881804291112, -0.02820884588714919, -0.16615397841842086, -0.14090437904060646, -0.11438949574015023, 0.08467408926456155, -0.04093417182620787, -0.1227327759422931, 0.30496263247627164, 0.02883281671718039, 0.1630022806563863, -0.060304345611919774, 0.2645282090834146, 0.07324126846714658, 0.0750258082644669, -0.03389386693590585, 0.3195688724517822, 0.21574479316211778, 0.11358492994497035, -0.3459820003869633, 0.14743303980701317, 0.039443771791770874] |
707.302 | Black-Body Anomaly: Analysis of Temperature Offsets | Based on the postulate that photon propagation is governed by a dynamically
broken SU(2) gauge symmetry (scale $\sim 10^{-4} $eV) we make predictions for
temperature offsets due to a low-temperature (a few times the present CMB
temperature) spectral anomaly at low frequencies. Temperature offsets are
extracted from least-square fits of the anomalous black-body spectra to their
conventional counterparts. We discuss statistical errors, compare our results
with those obtained from calibration data of the FIRAS instrument, and point
out that our predicted offsets are screened by experimental errors given the
frequency range used by FIRAS to perform their spectral fits. We also make
contact with the WMAP observation by blueshifting their frequency bands.
Although our results hint towards a strong dynamical component in the CMB
dipole and an explanation of low-$l$ suppression it is important in view of its
particle-physics implications that the above postulate be verified/falsified by
an independent low-temperature black-body precision experiment.
| hep-ph | based on the postulate that photon propagation is governed by a dynamically broken su2 gauge symmetry scale sim 104 ev we make predictions for temperature offsets due to a lowtemperature a few times the present cmb temperature spectral anomaly at low frequencies temperature offsets are extracted from leastsquare fits of the anomalous blackbody spectra to their conventional counterparts we discuss statistical errors compare our results with those obtained from calibration data of the firas instrument and point out that our predicted offsets are screened by experimental errors given the frequency range used by firas to perform their spectral fits we also make contact with the wmap observation by blueshifting their frequency bands although our results hint towards a strong dynamical component in the cmb dipole and an explanation of lowl suppression it is important in view of its particlephysics implications that the above postulate be verifiedfalsified by an independent lowtemperature blackbody precision experiment | [['based', 'on', 'the', 'postulate', 'that', 'photon', 'propagation', 'is', 'governed', 'by', 'a', 'dynamically', 'broken', 'su2', 'gauge', 'symmetry', 'scale', 'sim', '104', 'ev', 'we', 'make', 'predictions', 'for', 'temperature', 'offsets', 'due', 'to', 'a', 'lowtemperature', 'a', 'few', 'times', 'the', 'present', 'cmb', 'temperature', 'spectral', 'anomaly', 'at', 'low', 'frequencies', 'temperature', 'offsets', 'are', 'extracted', 'from', 'leastsquare', 'fits', 'of', 'the', 'anomalous', 'blackbody', 'spectra', 'to', 'their', 'conventional', 'counterparts', 'we', 'discuss', 'statistical', 'errors', 'compare', 'our', 'results', 'with', 'those', 'obtained', 'from', 'calibration', 'data', 'of', 'the', 'firas', 'instrument', 'and', 'point', 'out', 'that', 'our', 'predicted', 'offsets', 'are', 'screened', 'by', 'experimental', 'errors', 'given', 'the', 'frequency', 'range', 'used', 'by', 'firas', 'to', 'perform', 'their', 'spectral', 'fits', 'we', 'also', 'make', 'contact', 'with', 'the', 'wmap', 'observation', 'by', 'blueshifting', 'their', 'frequency', 'bands', 'although', 'our', 'results', 'hint', 'towards', 'a', 'strong', 'dynamical', 'component', 'in', 'the', 'cmb', 'dipole', 'and', 'an', 'explanation', 'of', 'lowl', 'suppression', 'it', 'is', 'important', 'in', 'view', 'of', 'its', 'particlephysics', 'implications', 'that', 'the', 'above', 'postulate', 'be', 'verifiedfalsified', 'by', 'an', 'independent', 'lowtemperature', 'blackbody', 'precision', 'experiment']] | [-0.07644289182682865, 0.15437363044417762, -0.09270455341098377, 0.08880800304866984, -0.0794444467434292, -0.11300998971733191, 0.08137003574857342, 0.42562386027757865, -0.20635131917477242, -0.3444187388093652, 0.07351219852755189, -0.31120284761939393, -0.04861552810210636, 0.21767235565379164, -0.006348802642569832, 0.017165736701587633, 0.025049365490160295, -0.03963245459415607, -0.08172045735256306, -0.1738361545905814, 0.26346889466558904, 0.15738053420423775, 0.26431340608580384, 0.03946805293794329, 0.04902280807973033, -0.04601832960677137, -0.06231118435971439, 0.008347419372416641, -0.1237780540180833, 0.04808265718288327, 0.23735561501541125, 0.04437154463884278, 0.15176934781361764, -0.3657540850905015, -0.22897176124388352, 0.07265688282878775, 0.08702144621853031, 0.09640367122023906, -0.04387466940112829, -0.29489951162280414, 0.03901619890913073, -0.15733404835612563, -0.1458347669647896, -0.09191109150982045, -0.03177486522441828, -0.029562513270464382, -0.24355698987461724, 0.14798325600579693, 0.012482875169792495, 0.08838579040572145, -0.0724510710884045, -0.16205247225068314, -0.01054679006368755, 0.05508725182459641, 0.07103792021639253, 0.03641757562505327, 0.16870967884269225, -0.08685857639035308, -0.1044347862112581, 0.40863866756645667, -0.1219280918188528, -0.07191321753749721, 0.14117380885536, -0.1669503703204483, -0.13200660048077176, 0.16237854162892817, 0.08604332652880418, 0.025966845042268306, -0.14524283063273238, 0.04547910042291685, 0.0314231363728667, 0.23031865905278737, 0.0556762270831601, 0.05008310387462476, 0.30760986259280654, 0.10957721037036543, 0.01702098367355862, 0.07786596256023347, -0.1505091850765319, -0.0184618614270891, -0.308106825723754, -0.02240026189591797, -0.1861236638842935, 0.06547545384321558, -0.1206815805419051, -0.09557384768758263, 0.3700097621277612, 0.21759531024451317, 0.2577219885210262, 0.07088041530455245, 0.3306573495225932, 0.12997455927229326, 0.07096989300120377, 0.03231015664948102, 0.32244829330470803, 0.12841044280465116, 0.09711773447863954, -0.23565889855442373, 0.0006331783984741809, -0.03399961819032844] |
707.3021 | Mixing in massive stellar mergers | The early evolution of dense star clusters is possibly dominated by close
interactions between stars, and physical collisions between stars may occur
quite frequently. Simulating a stellar collision event can be an intensive
numerical task, as detailed calculations of this process require hydrodynamic
simulations in three dimensions. We present a computationally inexpensive
method in which we approximate the merger process, including shock heating,
hydrodynamic mixing and mass loss, with a simple algorithm based on
conservation laws and a basic qualitative understanding of the hydrodynamics of
stellar mergers. The algorithm relies on Archimedes' principle to dictate the
distribution of the fluid in the stable equilibrium situation. We calibrate and
apply the method to mergers of massive stars, as these are expected to occur in
young and dense star clusters. We find that without the effects of microscopic
mixing, the temperature and chemical composition profiles in a collision
product can become double-valued functions of enclosed mass. Such an unphysical
situation is mended by simulating microscopic mixing as a post-collision
effect. In this way we find that head-on collisions between stars of the same
spectral type result in substantial mixing, while mergers between stars of
different spectral type, such as type B and O stars ($\sim$10 and $\sim$40\msun
respectively), are subject to relatively little hydrodynamic mixing.
| astro-ph | the early evolution of dense star clusters is possibly dominated by close interactions between stars and physical collisions between stars may occur quite frequently simulating a stellar collision event can be an intensive numerical task as detailed calculations of this process require hydrodynamic simulations in three dimensions we present a computationally inexpensive method in which we approximate the merger process including shock heating hydrodynamic mixing and mass loss with a simple algorithm based on conservation laws and a basic qualitative understanding of the hydrodynamics of stellar mergers the algorithm relies on archimedes principle to dictate the distribution of the fluid in the stable equilibrium situation we calibrate and apply the method to mergers of massive stars as these are expected to occur in young and dense star clusters we find that without the effects of microscopic mixing the temperature and chemical composition profiles in a collision product can become doublevalued functions of enclosed mass such an unphysical situation is mended by simulating microscopic mixing as a postcollision effect in this way we find that headon collisions between stars of the same spectral type result in substantial mixing while mergers between stars of different spectral type such as type b and o stars sim10 and sim40msun respectively are subject to relatively little hydrodynamic mixing | [['the', 'early', 'evolution', 'of', 'dense', 'star', 'clusters', 'is', 'possibly', 'dominated', 'by', 'close', 'interactions', 'between', 'stars', 'and', 'physical', 'collisions', 'between', 'stars', 'may', 'occur', 'quite', 'frequently', 'simulating', 'a', 'stellar', 'collision', 'event', 'can', 'be', 'an', 'intensive', 'numerical', 'task', 'as', 'detailed', 'calculations', 'of', 'this', 'process', 'require', 'hydrodynamic', 'simulations', 'in', 'three', 'dimensions', 'we', 'present', 'a', 'computationally', 'inexpensive', 'method', 'in', 'which', 'we', 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707.3022 | Shape dynamics during deposit of simple metal clusters on rare gas
matrices | Using a combined quantum mechanical/classical method, we study the collisions
of small Na clusters on large Ar clusters as a model for cluster deposit. We
work out basic mechanisms by systematic variation of collision energy, system
sizes, and orientations. The soft Ar material is found to serve as an extremely
efficient shock absorber. The collisional energy is quickly transfered at first
impact and the Na clusters are always captured by the Ar surface. The
distribution of the collision energy into the Ar system proceeds very fast with
velocity of sound. The relaxation of shapes goes at a slower pace using times
of several ps. It produces a substantial rearrangement of the Ar system while
the Na cluster remains rather robust.
| cond-mat.other | using a combined quantum mechanicalclassical method we study the collisions of small na clusters on large ar clusters as a model for cluster deposit we work out basic mechanisms by systematic variation of collision energy system sizes and orientations the soft ar material is found to serve as an extremely efficient shock absorber the collisional energy is quickly transfered at first impact and the na clusters are always captured by the ar surface the distribution of the collision energy into the ar system proceeds very fast with velocity of sound the relaxation of shapes goes at a slower pace using times of several ps it produces a substantial rearrangement of the ar system while the na cluster remains rather robust | [['using', 'a', 'combined', 'quantum', 'mechanicalclassical', 'method', 'we', 'study', 'the', 'collisions', 'of', 'small', 'na', 'clusters', 'on', 'large', 'ar', 'clusters', 'as', 'a', 'model', 'for', 'cluster', 'deposit', 'we', 'work', 'out', 'basic', 'mechanisms', 'by', 'systematic', 'variation', 'of', 'collision', 'energy', 'system', 'sizes', 'and', 'orientations', 'the', 'soft', 'ar', 'material', 'is', 'found', 'to', 'serve', 'as', 'an', 'extremely', 'efficient', 'shock', 'absorber', 'the', 'collisional', 'energy', 'is', 'quickly', 'transfered', 'at', 'first', 'impact', 'and', 'the', 'na', 'clusters', 'are', 'always', 'captured', 'by', 'the', 'ar', 'surface', 'the', 'distribution', 'of', 'the', 'collision', 'energy', 'into', 'the', 'ar', 'system', 'proceeds', 'very', 'fast', 'with', 'velocity', 'of', 'sound', 'the', 'relaxation', 'of', 'shapes', 'goes', 'at', 'a', 'slower', 'pace', 'using', 'times', 'of', 'several', 'ps', 'it', 'produces', 'a', 'substantial', 'rearrangement', 'of', 'the', 'ar', 'system', 'while', 'the', 'na', 'cluster', 'remains', 'rather', 'robust']] | [-0.0753081012360689, 0.1623431358540464, -0.07941148125276971, 0.061735008958680164, 0.02773577316679812, -0.11727444602943518, 0.04062697005912098, 0.4049088484098931, -0.26003112050336824, -0.3392974533171964, 0.03338360608782338, -0.25872524873110925, -0.04805245832735751, 0.1730406504777894, 0.008057005644752448, 0.007417136646744584, 0.08558782346217948, 0.012110592556741684, -0.035873468718765414, -0.21683128511126176, 0.2760032889914519, 0.1464938628242719, 0.23294673631546878, 0.02720897924937621, 0.08098568689829412, -0.024169689645020274, 0.0005654191144374238, 0.05724706723033881, -0.08870671237740635, 0.09154634602038197, 0.16785612024225982, 0.10368432871559087, 0.2709236429894672, -0.45641566005324113, -0.19289864497450024, 0.003952964498591022, 0.16211372186789805, 0.10579647475480837, -0.07658197128941782, -0.24431385668855504, 0.07044211753542308, -0.18348498478093567, -0.1491710263844423, -0.017034965559464543, 0.07378582512380696, 0.04698443957242504, -0.2530316444458205, 0.09658604028841145, 0.040029720722662455, 0.05473760615725133, -0.0879647343247315, -0.11322355358528771, -0.032818898284698236, 0.08003872274929862, 0.03375936476997992, 0.006837931717941616, 0.20502410280545624, -0.10633966740623836, -0.014522762554345512, 0.3925882721116312, -0.03349320794956587, -0.07772313969350662, 0.2503506483592312, -0.1134329858439497, -0.07170889769414705, 0.23063418712122602, 0.18965691218481345, 0.1365078743703726, -0.13248209424997767, 0.02703806440866388, -0.0017106706871330237, 0.1958865672976029, 0.061540367163936883, 0.017125055193901062, 0.20883028173208737, 0.19682940149272815, 0.05940998000280634, 0.13179896910040945, -0.18064161562830397, -0.0726100684245344, -0.2718452077061564, -0.165605050472527, -0.1622728020179735, 0.002394330273030185, -0.07972885438406394, -0.15476474622968867, 0.3579828960022756, 0.08193919746236515, 0.2512543084229022, -0.005638689968828894, 0.2812067491135427, 0.11458659318995763, 0.06357678870803543, 0.0896231378037326, 0.22620797783191152, 0.11908874817646477, 0.14512397761127965, -0.24654763111328126, 0.10650401321012809, 0.02309378647018506] |
707.3023 | Integral Concentration of idempotent trigonometric polynomials with gaps | We prove that for all p>1/2 there exists a constant $\gamma_p>0$ such that,
for any symmetric measurable set of positive measure $E\subset \TT$ and for any
$\gamma<\gamma_p$, there is an idempotent trigonometrical polynomial f
satisfying $\int_E |f|^p > \gamma \int_{\TT} |f|^p$. This disproves a
conjecture of Anderson, Ash, Jones, Rider and Saffari, who proved the existence
of $\gamma_p>0$ for p>1 and conjectured that it does not exists for p=1.
Furthermore, we prove that one can take $\gamma_p=1$ when p>1 is not an even
integer, and that polynomials f can be chosen with arbitrarily large gaps when
$p\neq 2$. This shows striking differences with the case p=2, for which the
best constant is strictly smaller than 1/2, as it has been known for twenty
years, and for which having arbitrarily large gaps with such concentration of
the integral is not possible, according to a classical theorem of Wiener.
We find sharper results for $0<p\leq 1$ when we restrict to open sets, or
when we enlarge the class of idempotent trigonometric polynomials to all
positive definite ones.
| math.CA | we prove that for all p12 there exists a constant gamma_p0 such that for any symmetric measurable set of positive measure esubset tt and for any gammagamma_p there is an idempotent trigonometrical polynomial f satisfying int_e fp gamma int_tt fp this disproves a conjecture of anderson ash jones rider and saffari who proved the existence of gamma_p0 for p1 and conjectured that it does not exists for p1 furthermore we prove that one can take gamma_p1 when p1 is not an even integer and that polynomials f can be chosen with arbitrarily large gaps when pneq 2 this shows striking differences with the case p2 for which the best constant is strictly smaller than 12 as it has been known for twenty years and for which having arbitrarily large gaps with such concentration of the integral is not possible according to a classical theorem of wiener we find sharper results for 0pleq 1 when we restrict to open sets or when we enlarge the class of idempotent trigonometric polynomials to all positive definite ones | [['we', 'prove', 'that', 'for', 'all', 'p12', 'there', 'exists', 'a', 'constant', 'gamma_p0', 'such', 'that', 'for', 'any', 'symmetric', 'measurable', 'set', 'of', 'positive', 'measure', 'esubset', 'tt', 'and', 'for', 'any', 'gammagamma_p', 'there', 'is', 'an', 'idempotent', 'trigonometrical', 'polynomial', 'f', 'satisfying', 'int_e', 'fp', 'gamma', 'int_tt', 'fp', 'this', 'disproves', 'a', 'conjecture', 'of', 'anderson', 'ash', 'jones', 'rider', 'and', 'saffari', 'who', 'proved', 'the', 'existence', 'of', 'gamma_p0', 'for', 'p1', 'and', 'conjectured', 'that', 'it', 'does', 'not', 'exists', 'for', 'p1', 'furthermore', 'we', 'prove', 'that', 'one', 'can', 'take', 'gamma_p1', 'when', 'p1', 'is', 'not', 'an', 'even', 'integer', 'and', 'that', 'polynomials', 'f', 'can', 'be', 'chosen', 'with', 'arbitrarily', 'large', 'gaps', 'when', 'pneq', '2', 'this', 'shows', 'striking', 'differences', 'with', 'the', 'case', 'p2', 'for', 'which', 'the', 'best', 'constant', 'is', 'strictly', 'smaller', 'than', '12', 'as', 'it', 'has', 'been', 'known', 'for', 'twenty', 'years', 'and', 'for', 'which', 'having', 'arbitrarily', 'large', 'gaps', 'with', 'such', 'concentration', 'of', 'the', 'integral', 'is', 'not', 'possible', 'according', 'to', 'a', 'classical', 'theorem', 'of', 'wiener', 'we', 'find', 'sharper', 'results', 'for', '0pleq', '1', 'when', 'we', 'restrict', 'to', 'open', 'sets', 'or', 'when', 'we', 'enlarge', 'the', 'class', 'of', 'idempotent', 'trigonometric', 'polynomials', 'to', 'all', 'positive', 'definite', 'ones']] | [-0.12011948674917221, 0.12425558841119602, -0.06055126239764778, 0.08678096330943791, -0.05836885610650129, -0.2188493382487008, 0.008272156353546854, 0.35232807688469836, -0.26855760460500333, -0.226124835918274, 0.11632895375916953, -0.287653669213657, -0.12837593567776767, 0.2352082403965623, -0.07865447769667405, 0.026368122780695558, 0.03736829209853621, 0.07599017430535134, -0.06417745121049366, -0.2952884739538764, 0.32168593314366745, -0.052296523815568756, 0.14337746792965952, 0.0762774437912466, 0.08409263346933157, 0.009211554578231538, 0.03442228234729127, 0.02016728789479684, -0.16845931925178292, 0.05633589384858222, 0.29181719010093193, 0.11533469458740643, 0.29589977336290757, -0.33072843779535854, -0.1526606264667969, 0.24776626072947264, 0.14141377713805175, 0.04262760022299036, -0.03397530435365351, -0.21241167355465757, 0.18722565920667394, -0.12248384542283876, -0.17772853725370677, -0.06896485523663133, 0.1349839139072334, 0.030703424224082163, -0.3428234654451337, 0.03701721144401852, 0.14883932760533164, 0.05760811006321626, -0.04860105332781506, -0.18006335295024603, -0.0032379131832653107, 0.09411734994706314, 0.01953997969189111, 0.09838926098172499, -0.007547749110552318, -0.04756931930314749, -0.09921481310773422, 0.3528615975067677, -0.0653935185405049, -0.2241234021138071, 0.14102666836971528, -0.221605474915465, -0.15269643100088134, 0.118343169761219, 0.03423492645516115, 0.10663158469559515, -0.027312886059243122, 0.15803115101195597, -0.14565544622292853, 0.18260140110574224, 0.14029630536679177, -0.00935362445683602, 0.1124482039910029, 0.029200178425868646, 0.15553888347554568, 0.09567153236952007, -0.01739021824015414, -0.028840186419855692, -0.30561646809253623, -0.1773608744966195, -0.20419921949779724, 0.13249205946811024, -0.09190330311120146, -0.18006314911865903, 0.3109863069401506, 0.08945657750146518, 0.1559001730179743, 0.1259055876529173, 0.18078937955570462, 0.12702685630587546, 0.06127603197374436, 0.12353337985353872, 0.1840402411077829, 0.09117262700079556, 0.021242255202549347, -0.12425783406395247, 0.047588397732333226, 0.07294562044827377] |
707.3024 | Viability of Dirac phase leptogenesis | We discuss the conditions for a non-vanishing Dirac phase \delta and mixing
angle \theta_{13}, sources of CP violation in neutrino oscillations, to be
uniquely responsible for the observed matter-antimatter asymmetry of the
universe through leptogenesis. We show that this scenario, that we call
\delta-leptogenesis, is viable when the degenerate limit (DL) for the heavy
right-handed (RH) neutrino spectrum is considered. We derive an interesting
joint condition on \sin\theta_{13} and the absolute neutrino mass scale that
can be tested in future neutrino oscillation experiments. In the limit of
hierarchical heavy RH neutrino spectrum (HL), we strengthen the previous result
that \delta-leptogenesis is only very marginally allowed, even when the
production from the two heavier RH neutrinos is taken into account. An improved
experimental upper bound on \sin\theta_{13} and (or) an account of quantum
kinetic effects could completely rule out this option in the future. Therefore,
\delta-leptogenesis can be also regarded as a motivation for models with
degenerate heavy neutrino spectrum.
| hep-ph | we discuss the conditions for a nonvanishing dirac phase delta and mixing angle theta_13 sources of cp violation in neutrino oscillations to be uniquely responsible for the observed matterantimatter asymmetry of the universe through leptogenesis we show that this scenario that we call deltaleptogenesis is viable when the degenerate limit dl for the heavy righthanded rh neutrino spectrum is considered we derive an interesting joint condition on sintheta_13 and the absolute neutrino mass scale that can be tested in future neutrino oscillation experiments in the limit of hierarchical heavy rh neutrino spectrum hl we strengthen the previous result that deltaleptogenesis is only very marginally allowed even when the production from the two heavier rh neutrinos is taken into account an improved experimental upper bound on sintheta_13 and or an account of quantum kinetic effects could completely rule out this option in the future therefore deltaleptogenesis can be also regarded as a motivation for models with degenerate heavy neutrino spectrum | [['we', 'discuss', 'the', 'conditions', 'for', 'a', 'nonvanishing', 'dirac', 'phase', 'delta', 'and', 'mixing', 'angle', 'theta_13', 'sources', 'of', 'cp', 'violation', 'in', 'neutrino', 'oscillations', 'to', 'be', 'uniquely', 'responsible', 'for', 'the', 'observed', 'matterantimatter', 'asymmetry', 'of', 'the', 'universe', 'through', 'leptogenesis', 'we', 'show', 'that', 'this', 'scenario', 'that', 'we', 'call', 'deltaleptogenesis', 'is', 'viable', 'when', 'the', 'degenerate', 'limit', 'dl', 'for', 'the', 'heavy', 'righthanded', 'rh', 'neutrino', 'spectrum', 'is', 'considered', 'we', 'derive', 'an', 'interesting', 'joint', 'condition', 'on', 'sintheta_13', 'and', 'the', 'absolute', 'neutrino', 'mass', 'scale', 'that', 'can', 'be', 'tested', 'in', 'future', 'neutrino', 'oscillation', 'experiments', 'in', 'the', 'limit', 'of', 'hierarchical', 'heavy', 'rh', 'neutrino', 'spectrum', 'hl', 'we', 'strengthen', 'the', 'previous', 'result', 'that', 'deltaleptogenesis', 'is', 'only', 'very', 'marginally', 'allowed', 'even', 'when', 'the', 'production', 'from', 'the', 'two', 'heavier', 'rh', 'neutrinos', 'is', 'taken', 'into', 'account', 'an', 'improved', 'experimental', 'upper', 'bound', 'on', 'sintheta_13', 'and', 'or', 'an', 'account', 'of', 'quantum', 'kinetic', 'effects', 'could', 'completely', 'rule', 'out', 'this', 'option', 'in', 'the', 'future', 'therefore', 'deltaleptogenesis', 'can', 'be', 'also', 'regarded', 'as', 'a', 'motivation', 'for', 'models', 'with', 'degenerate', 'heavy', 'neutrino', 'spectrum']] | [-0.11743855665133293, 0.2604427467646339, -0.0499839363648972, 0.18760594643166276, -0.07382719021776703, -0.1737541759448161, 0.07561463998987943, 0.3113609742103789, -0.24671146271123592, -0.2693304446717701, 0.07732670351792618, -0.2606593595390097, -0.04916379855705554, 0.1980719990594863, 0.02050219621485884, -0.0037230741373210584, 0.0710794723602949, -0.018816854145799606, -0.06196994278374942, -0.22488209418659597, 0.30202460781313806, 0.10800929521957307, 0.22209587463019592, 0.11187235088784646, 0.04805922335447193, -0.06792058760985592, -0.002001681582893848, -0.03863844806738432, -0.07575877677089514, 0.005585656565783909, 0.19977873151803133, 0.10657021046598565, 0.11248759356321497, -0.3968970170186001, -0.1947077220926682, 0.20049063767066355, 0.17717451540718102, 0.0874637753919423, -0.09545647157883307, -0.2929869863093368, 0.06739243518769061, -0.1958480565061898, -0.1517692034560367, -0.04349291480421645, -0.042414931655105834, -0.10544533787424085, -0.3554691558545631, 0.09369579608000833, 0.006710376177545426, -0.05674916373455235, -0.037493664389124735, -0.17637501890718374, -0.020966293386904138, 0.05471182006020275, 0.14217294665908664, -0.06173485253041364, 0.06638047593183019, -0.1203318472816931, -0.06895296803804454, 0.42129699747611143, -0.12059349272950734, -0.15967785146192842, 0.08008131157436976, -0.17218754295868882, -0.17095472246303028, 0.08237705405204082, 0.13642833660702286, 0.07796937888839615, -0.16473297014010269, 0.11595872810598076, -0.10110431894917721, 0.16511936788154333, 0.046886402274534666, 0.03384400088832064, 0.3169706331671409, 0.1958506397065361, 0.10827789820859549, 0.0031669738610222375, -0.11733565473952477, -0.021555968547831494, -0.36397418182902624, -0.138885227663504, -0.11976499504954466, 0.09100152958336773, -0.07614165874252626, -0.08287566579525424, 0.37801971020610453, 0.1532597448618251, 0.21051005922468766, -0.00554771490143202, 0.27307897740272136, 0.12979301047561187, 0.04690241522548146, 0.02407449258508969, 0.3274430011006646, 0.11033555060777368, 0.1153417533855159, -0.25548491309361776, 0.05574031997144035, 0.04707143015854951] |
707.3025 | Constraints on nuclear matter properties from QCD susceptibilities | We establish the interrelation between the QCD scalar response of the nuclear
medium and its response to a scalar probe coupled to nucleons, such as the
scalar meson responsible for the nuclear binding. The relation that we derive
applies at the nucleonic as well as at the nuclear levels. Non trivial
consequences follow. In particular it opens the possibility of relating medium
effects in the scalar meson exchange or three-body forces of nuclear physics to
QCD lattice studies of the nucleon mass
| nucl-th | we establish the interrelation between the qcd scalar response of the nuclear medium and its response to a scalar probe coupled to nucleons such as the scalar meson responsible for the nuclear binding the relation that we derive applies at the nucleonic as well as at the nuclear levels non trivial consequences follow in particular it opens the possibility of relating medium effects in the scalar meson exchange or threebody forces of nuclear physics to qcd lattice studies of the nucleon mass | [['we', 'establish', 'the', 'interrelation', 'between', 'the', 'qcd', 'scalar', 'response', 'of', 'the', 'nuclear', 'medium', 'and', 'its', 'response', 'to', 'a', 'scalar', 'probe', 'coupled', 'to', 'nucleons', 'such', 'as', 'the', 'scalar', 'meson', 'responsible', 'for', 'the', 'nuclear', 'binding', 'the', 'relation', 'that', 'we', 'derive', 'applies', 'at', 'the', 'nucleonic', 'as', 'well', 'as', 'at', 'the', 'nuclear', 'levels', 'non', 'trivial', 'consequences', 'follow', 'in', 'particular', 'it', 'opens', 'the', 'possibility', 'of', 'relating', 'medium', 'effects', 'in', 'the', 'scalar', 'meson', 'exchange', 'or', 'threebody', 'forces', 'of', 'nuclear', 'physics', 'to', 'qcd', 'lattice', 'studies', 'of', 'the', 'nucleon', 'mass']] | [-0.07804475913233147, 0.2431673345627354, -0.10654504218979216, 0.14524443674741722, -0.06667192450656396, -0.09196373704457428, 0.03983923194790827, 0.286499004935982, -0.22145785697701773, -0.2601034428765316, -0.030562597119658277, -0.3066521401448948, -0.07392157189457155, 0.0952838675641432, 0.13293937848676451, 0.05031596522752718, -0.04306497050608259, 0.08643367200118784, -0.072765783812828, -0.14130989371844363, 0.38967477989087745, 0.04471268112808125, 0.16715528082568198, 0.20355749971846618, 0.06872456172117736, 0.06965417899304956, -0.016979964319389404, -0.047650281998624165, -0.10803755458272929, 0.05205623108166747, 0.22579654483635705, 0.018504393579461043, 0.1867670877041613, -0.43314413767217136, -0.18437078032960616, 0.13116428050462428, 0.11787797294829677, 0.14203368427754356, -0.06741190583320199, -0.2518342915786112, 0.005776386991960973, -0.21853511219435348, -0.20197971850043026, -0.1403310095959502, -0.01881701734325871, 0.012960311820412554, -0.27813639207856683, 0.12262139160458635, -0.023872305881856692, 0.004272147149937909, -0.10820255804630904, -0.16032306562609425, -0.0015468978885243216, 0.1121412591168248, 0.11947390379486378, 0.06013176884933761, 0.21535512342731036, -0.22269597244676112, -0.08389364710509233, 0.4827089715839886, -0.06880664816921259, -0.15531308400989852, 0.1596931578455175, -0.16780551459367682, -0.1265146220330058, 0.07671195754735935, 0.19506736379116774, 0.05516979783750707, -0.15749395457550702, 0.10482828945940838, -0.02786013977488548, 0.1562722836643821, 0.0708565103889602, 0.11642022169104255, 0.22561811377498797, 0.1721190972815881, 0.010927791196126036, 0.118724367410944, -0.038815423360707736, -0.13416714449242756, -0.3466287323148785, -0.09604851509694283, -0.12251411453343747, 0.07104475402114231, -0.0818959166203191, -0.11260280228878666, 0.39819425339924125, 0.06074039347855965, 0.1789267836167, -0.014520668969830362, 0.28338123637637713, 0.07824701218008313, 0.07057022645774229, 0.06106696578833025, 0.33856914147007755, 0.28633614210411906, 0.13442641953801418, -0.3594149242541412, -0.014590612124288228, 0.05480466903437201] |
707.3026 | Parabose algebra as generalized conformal supersymmetry | The form of realistic space-time supersymmetry is fixed, by
Haag-Lopuszanski-Sohnius theorem, either to the familiar form of Poincare
supersymmetry or, in massless case, to that of conformal supersymmetry. We
question necessity for such strict restriction in the context of theories with
broken symmetries. In particular, we consider parabose N=4 algebra as an
extension of conformal supersymmetry in four dimensions (coinciding with the,
so called, generalized conformal supersymmetry). We show that sacrificing of
manifest Lorentz covariance leads to interpretation of the generalized
conformal supersymmetry as symmetry that contains, on equal footing, two
"rotation" groups. It is possible to reduce this large symmetry down to
observable one by simply breaking one of these two SU(2) isomorphic groups down
to its U(1) subgroup.
| hep-th | the form of realistic spacetime supersymmetry is fixed by haaglopuszanskisohnius theorem either to the familiar form of poincare supersymmetry or in massless case to that of conformal supersymmetry we question necessity for such strict restriction in the context of theories with broken symmetries in particular we consider parabose n4 algebra as an extension of conformal supersymmetry in four dimensions coinciding with the so called generalized conformal supersymmetry we show that sacrificing of manifest lorentz covariance leads to interpretation of the generalized conformal supersymmetry as symmetry that contains on equal footing two rotation groups it is possible to reduce this large symmetry down to observable one by simply breaking one of these two su2 isomorphic groups down to its u1 subgroup | [['the', 'form', 'of', 'realistic', 'spacetime', 'supersymmetry', 'is', 'fixed', 'by', 'haaglopuszanskisohnius', 'theorem', 'either', 'to', 'the', 'familiar', 'form', 'of', 'poincare', 'supersymmetry', 'or', 'in', 'massless', 'case', 'to', 'that', 'of', 'conformal', 'supersymmetry', 'we', 'question', 'necessity', 'for', 'such', 'strict', 'restriction', 'in', 'the', 'context', 'of', 'theories', 'with', 'broken', 'symmetries', 'in', 'particular', 'we', 'consider', 'parabose', 'n4', 'algebra', 'as', 'an', 'extension', 'of', 'conformal', 'supersymmetry', 'in', 'four', 'dimensions', 'coinciding', 'with', 'the', 'so', 'called', 'generalized', 'conformal', 'supersymmetry', 'we', 'show', 'that', 'sacrificing', 'of', 'manifest', 'lorentz', 'covariance', 'leads', 'to', 'interpretation', 'of', 'the', 'generalized', 'conformal', 'supersymmetry', 'as', 'symmetry', 'that', 'contains', 'on', 'equal', 'footing', 'two', 'rotation', 'groups', 'it', 'is', 'possible', 'to', 'reduce', 'this', 'large', 'symmetry', 'down', 'to', 'observable', 'one', 'by', 'simply', 'breaking', 'one', 'of', 'these', 'two', 'su2', 'isomorphic', 'groups', 'down', 'to', 'its', 'u1', 'subgroup']] | [-0.1339580289561677, 0.1879544509091745, -0.03384533552296397, 0.11153595959092687, -0.14969361522000188, -0.1711610183550217, -0.03449587169702032, 0.3418318097393553, -0.21528578003156273, -0.26851789611039545, 0.1263120787633004, -0.24022037492078893, -0.1354762531539128, 0.0673051882562611, -0.07524992127026267, 0.02276224156933594, -0.07378457677981057, 0.08882941577207892, -0.13086802391565264, -0.26381590181546866, 0.3580885414472398, -0.03512867459315149, 0.261599532995733, -0.003932249004475209, 0.1198959834003007, 0.028142184222570987, 0.025706719094496063, -0.034619937541291994, -0.06814611257349108, 0.09324575923559326, 0.22226649547042718, 0.07032048974201835, 0.14040893789805362, -0.4391397175402576, -0.16546591068813657, 0.1427584215294288, 0.17207108500624904, 0.10565237407455173, -0.013364522444953, -0.2935910539822888, 0.07868232400579174, -0.17707593479984196, -0.2153531753794611, -0.10207710471473821, -0.0189481254416604, -0.18511439356248544, -0.21078613582810685, 0.11198910680489943, 0.09704457401071026, 0.08565837385117256, -0.009948276404972273, -0.02184196489573527, -0.1145231108682058, 0.035243688726469, 0.16294096408709258, 0.017388256975966153, 0.11838432631705802, -0.1524864301951739, -0.15928648995673833, 0.44225274583622187, -0.028290343981533617, -0.25511014445864855, 0.15225023389480882, -0.17118396663093283, -0.25922503092271443, 0.09356913665513031, 0.09798494013840285, 0.09048705089039036, -0.08835598408487164, 0.20827666907219075, -0.085579921976671, 0.09453051525927267, 0.13216543826861543, 0.03955177700992267, 0.20359478549671775, 0.08769768079500176, 0.11393169854853709, 0.15658604338405138, 0.05081936818578852, -0.09513221368117321, -0.4432827081186932, -0.15451550951517118, -0.137332243265725, 0.15198487814461045, -0.11341682504940809, -0.11566137898509868, 0.3532245965643215, 0.12828489147007324, 0.15546185184395364, 0.07943153531220154, 0.19466525749420793, 0.09124959873606865, 0.17538638704479867, 0.02005299453099235, 0.20017893368597417, 0.15152385103919333, -0.007737863167118626, -0.2246874928270944, -0.14469326043720632, 0.15665452725434004] |
707.3027 | Relation between Light Cone Distribution Amplitudes and Shape Function
in B mesons | The Bakamjian-Thomas relativistic quark model provides a Poincar\'e
representation of bound states with a fixed number of constituents and, in the
heavy quark limit, form factors of currents satisfy covariance and Isgur-Wise
scaling. We compute the Light Cone Distribution Amplitudes of $B$ mesons
$\phi_{\pm}^B(\omega)$ as well as the Shape Function $S(\omega)$, that enters
in the decay $B \to X_s \gamma$, that are also covariant in this class of
models. The LCDA and the SF are related through the quark model wave function.
The former satisfy, in the limit of vanishing constituent light quark mass, the
integral relation given by QCD in the valence sector of Fock space. Using a
gaussian wave function, the obtained $S(\omega)$ is identical to the so-called
Roman Shape Function. From the parameters for the latter that fit the $B \to
X_s\gamma$ spectrum we predict the behaviour of $\phi_{\pm}^B(\omega)$. We
discuss the important role played by the constituent light quark mass. In
particular, although $\phi_-^B(0) \not= 0$ for vanishing light quark mass, a
non-vanishing mass implies the unfamiliar result $\phi_-^B (0) = 0$. Moreover,
we incorporate the short distance behaviour of QCD to $\phi_+^B (\omega)$,
which has sizeable effects at large $\omega$. We obtain the values for the
parameters $\bar{\Lambda} \cong 0.35$ GeV and $\lambda_B^{-1} \cong 1.43$
GeV$^{-1}$. We compare with other theoretical approaches and illustrate the
great variety of models found in the literature for the functions $\phi_{\pm}^B
(\omega)$; hence the necessity of imposing further constraints as in the
present paper. We briefly review also the different phenomena that are
sensitive to the LCDA.
| hep-ph | the bakamjianthomas relativistic quark model provides a poincare representation of bound states with a fixed number of constituents and in the heavy quark limit form factors of currents satisfy covariance and isgurwise scaling we compute the light cone distribution amplitudes of b mesons phi_pmbomega as well as the shape function somega that enters in the decay b to x_s gamma that are also covariant in this class of models the lcda and the sf are related through the quark model wave function the former satisfy in the limit of vanishing constituent light quark mass the integral relation given by qcd in the valence sector of fock space using a gaussian wave function the obtained somega is identical to the socalled roman shape function from the parameters for the latter that fit the b to x_sgamma spectrum we predict the behaviour of phi_pmbomega we discuss the important role played by the constituent light quark mass in particular although phi_b0 not 0 for vanishing light quark mass a nonvanishing mass implies the unfamiliar result phi_b 0 0 moreover we incorporate the short distance behaviour of qcd to phi_b omega which has sizeable effects at large omega we obtain the values for the parameters barlambda cong 035 gev and lambda_b1 cong 143 gev1 we compare with other theoretical approaches and illustrate the great variety of models found in the literature for the functions phi_pmb omega hence the necessity of imposing further constraints as in the present paper we briefly review also the different phenomena that are sensitive to the lcda | [['the', 'bakamjianthomas', 'relativistic', 'quark', 'model', 'provides', 'a', 'poincare', 'representation', 'of', 'bound', 'states', 'with', 'a', 'fixed', 'number', 'of', 'constituents', 'and', 'in', 'the', 'heavy', 'quark', 'limit', 'form', 'factors', 'of', 'currents', 'satisfy', 'covariance', 'and', 'isgurwise', 'scaling', 'we', 'compute', 'the', 'light', 'cone', 'distribution', 'amplitudes', 'of', 'b', 'mesons', 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707.3028 | Finding Efficient Recursions for Risk Aggregation by Computer Algebra | We derive recursions for the probability distribution of random sums by
computer algebra. Unlike the well-known Panjer-type recursions, they are of
finite order and thus allow for computation in linear time. This efficiency is
bought by the assumption that the probability generating function of the claim
size be algebraic. The probability generating function of the claim number is
supposed to be from the rather general class of D-finite functions.
| math.PR | we derive recursions for the probability distribution of random sums by computer algebra unlike the wellknown panjertype recursions they are of finite order and thus allow for computation in linear time this efficiency is bought by the assumption that the probability generating function of the claim size be algebraic the probability generating function of the claim number is supposed to be from the rather general class of dfinite functions | [['we', 'derive', 'recursions', 'for', 'the', 'probability', 'distribution', 'of', 'random', 'sums', 'by', 'computer', 'algebra', 'unlike', 'the', 'wellknown', 'panjertype', 'recursions', 'they', 'are', 'of', 'finite', 'order', 'and', 'thus', 'allow', 'for', 'computation', 'in', 'linear', 'time', 'this', 'efficiency', 'is', 'bought', 'by', 'the', 'assumption', 'that', 'the', 'probability', 'generating', 'function', 'of', 'the', 'claim', 'size', 'be', 'algebraic', 'the', 'probability', 'generating', 'function', 'of', 'the', 'claim', 'number', 'is', 'supposed', 'to', 'be', 'from', 'the', 'rather', 'general', 'class', 'of', 'dfinite', 'functions']] | [-0.1108534636304659, 0.11552435204879764, -0.10583508531015147, 0.09436478935736779, -0.08669353640802643, -0.0905653590829495, 0.06305336289326935, 0.3195835459867821, -0.29698906348237547, -0.2909051309038392, 0.10112147513427772, -0.22697510142974994, -0.1414739393409999, 0.19662736231967917, -0.06295316840944853, 0.10304530041621011, 0.004967798574772828, 0.06402884852072663, -0.04878014701877392, -0.2976520466070403, 0.35234856266898157, 0.02967299731886562, 0.27194898531717415, 0.00028742044506704104, 0.06821582292425721, 0.03682893838541692, -0.05676652758847922, 0.002009770559037433, -0.0783161046981738, 0.10532145245986826, 0.2727038208121324, 0.1873220311039511, 0.2948844694148968, -0.4188124190687257, -0.1408030771622982, 0.1636234739665216, 0.10749606929911192, 0.09492032255237813, -0.016708081054008183, -0.22174475965542062, 0.11108275157782961, -0.18048852597198942, -0.16072978517588446, -0.049906919737729954, 0.047363011556787085, 0.11580868246143355, -0.3178068103871363, 0.061557845828835576, 0.07007171386195456, 0.02658810804817168, 0.02065379036973943, -0.12038376142257168, 0.009912673007313381, 0.08675574725630748, 0.03723529829671059, 0.012688384857028723, 0.09086598840761273, -0.1352615781395477, -0.10691401877385728, 0.3461922115564127, -0.02517244124593323, -0.28152282388113875, 0.12744002634495058, -0.180427528821918, -0.13620271730606498, 0.1479557745213456, 0.13140146187780535, 0.14107763050945804, -0.13105634349288747, 0.13471999060386544, -0.07761876657605171, 0.11334996034993845, 0.06872781785889803, 0.04147286296510549, 0.19185233474983013, 0.05245949673767695, 0.05701531221925774, 0.14869763952297302, -0.01006075248176999, -0.11682859224417959, -0.31366467879064763, -0.17164690799408538, -0.25577154530979257, 0.08103188392980133, -0.11384484338251401, -0.16370974520139178, 0.3842156679328421, 0.14471471619189663, 0.17536193792864865, 0.19769885526586542, 0.24589568540892182, 0.25170882525579896, 0.06860849318806739, 0.05358949615209199, 0.12170699156601639, 0.11927932867889895, 0.021014125373981455, -0.14394915252855486, 0.1655953134451171, 0.13178755768903477] |
707.3029 | Collapse of antiferromagnetism in CeRh2Si2 : volume versus entropy | The thermal expansion of the heavy fermion compound CeRh2Si2 has been
measured under pressure as a function of temperature using strain gages. A
large anomaly associated to the Neel temperature has been detected even above
the suspected critical pressure Pc = 1.05 GPa where no indication of
antiferromagnetism has been observed in calorimetry experiments sensitive to
the entropy change. An unexpected feature is the pressure slowdown of the
antiferromagnetic-paramagnetic transition by comparison to the fast pressure
collapse predicted for homogeneous first order quantum phase transition with
one unique pressure singularity at Pc. A large pressure dependance is observed
in the anisotropy of the thermal expansion measured parallel or perpendicular
to the c axis of this tetragonal crystal. The Fermi surface reconstruction
associated to the first order transition produces quite different pressure
response in the transport scattering measured along different crystallographic
directions. A brief discussion is made on other examples of first order quantum
transitions in strongly correlated electronic systems : MnSi and CeCoIn5.
| cond-mat.str-el | the thermal expansion of the heavy fermion compound cerh2si2 has been measured under pressure as a function of temperature using strain gages a large anomaly associated to the neel temperature has been detected even above the suspected critical pressure pc 105 gpa where no indication of antiferromagnetism has been observed in calorimetry experiments sensitive to the entropy change an unexpected feature is the pressure slowdown of the antiferromagneticparamagnetic transition by comparison to the fast pressure collapse predicted for homogeneous first order quantum phase transition with one unique pressure singularity at pc a large pressure dependance is observed in the anisotropy of the thermal expansion measured parallel or perpendicular to the c axis of this tetragonal crystal the fermi surface reconstruction associated to the first order transition produces quite different pressure response in the transport scattering measured along different crystallographic directions a brief discussion is made on other examples of first order quantum transitions in strongly correlated electronic systems mnsi and cecoin5 | [['the', 'thermal', 'expansion', 'of', 'the', 'heavy', 'fermion', 'compound', 'cerh2si2', 'has', 'been', 'measured', 'under', 'pressure', 'as', 'a', 'function', 'of', 'temperature', 'using', 'strain', 'gages', 'a', 'large', 'anomaly', 'associated', 'to', 'the', 'neel', 'temperature', 'has', 'been', 'detected', 'even', 'above', 'the', 'suspected', 'critical', 'pressure', 'pc', '105', 'gpa', 'where', 'no', 'indication', 'of', 'antiferromagnetism', 'has', 'been', 'observed', 'in', 'calorimetry', 'experiments', 'sensitive', 'to', 'the', 'entropy', 'change', 'an', 'unexpected', 'feature', 'is', 'the', 'pressure', 'slowdown', 'of', 'the', 'antiferromagneticparamagnetic', 'transition', 'by', 'comparison', 'to', 'the', 'fast', 'pressure', 'collapse', 'predicted', 'for', 'homogeneous', 'first', 'order', 'quantum', 'phase', 'transition', 'with', 'one', 'unique', 'pressure', 'singularity', 'at', 'pc', 'a', 'large', 'pressure', 'dependance', 'is', 'observed', 'in', 'the', 'anisotropy', 'of', 'the', 'thermal', 'expansion', 'measured', 'parallel', 'or', 'perpendicular', 'to', 'the', 'c', 'axis', 'of', 'this', 'tetragonal', 'crystal', 'the', 'fermi', 'surface', 'reconstruction', 'associated', 'to', 'the', 'first', 'order', 'transition', 'produces', 'quite', 'different', 'pressure', 'response', 'in', 'the', 'transport', 'scattering', 'measured', 'along', 'different', 'crystallographic', 'directions', 'a', 'brief', 'discussion', 'is', 'made', 'on', 'other', 'examples', 'of', 'first', 'order', 'quantum', 'transitions', 'in', 'strongly', 'correlated', 'electronic', 'systems', 'mnsi', 'and', 'cecoin5']] | [-0.17783153579159647, 0.21719103304010176, -0.07340424860681563, -0.008344763900031861, -0.0607122419928403, -0.11200255651738472, 0.05001695989775732, 0.37904940355823646, -0.26528428292179607, -0.28301813541362003, 0.04805381734015258, -0.335176097842292, -0.05583116407101245, 0.14303503278353663, 0.06954782769396346, 0.06015672114885973, -0.04601357931629842, 0.05553380553234623, -0.14929472122439733, -0.20197393067227387, 0.2750924585867234, 0.07719435155252863, 0.32102714870009363, 0.09036577943682103, 0.06480815018648686, -0.07535177240869817, 0.07920124463528945, 0.05805209194894256, -0.154786643962613, -0.028898387834985065, 0.25217780160214404, -0.06057476742418703, 0.1842450949114672, -0.3796051851595226, -0.23182148559261923, 0.04165596192881974, 0.09027500926332203, 0.09207838597585974, -0.09304325748307295, -0.26893321304402734, 0.047896467664811225, -0.1308777708074321, -0.15327366025574643, -0.08551097168697055, 0.0027394538097407508, -0.048333689292765554, -0.20986781100979687, 0.1434076291900157, 0.031585993259705555, 0.12167685810962449, -0.10478767265727662, -0.1230107437608104, -0.042417175270998794, 0.04144212023227805, 0.09210128044009624, 0.12666667110477545, 0.17402377290223142, -0.08855559680500988, -0.08977552466036648, 0.4070134475966048, -0.07151967537465002, -0.022977387497884146, 0.19885438344490525, -0.2121224196928536, -0.11542975547960642, 0.23352442218152725, 0.14200285296874143, 0.06182758462606634, -0.13026878342715018, 0.03586819779918882, 0.03713898265861577, 0.17998161743921431, 0.09242645541049818, -0.01821492533474258, 0.2259400025898047, 0.1614160135754251, 0.02009103536860358, 0.15434678583239606, -0.14038596647539933, -0.07329216071401624, -0.2540025165050019, -0.18231869660179068, -0.19852067977233404, 0.04697955194687158, -0.09705990071324212, -0.19206575644983453, 0.33790666685202475, 0.1348852310503214, 0.19487106169990454, -0.085515722914408, 0.2603441316486909, 0.11340717859609596, 0.08673367806441318, 0.05490861564255695, 0.2655919845525453, 0.1854609109067954, 0.147506278352407, -0.27948469645199103, 0.13999254893083474, -0.00476898814378717] |
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