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708.3749 | Berry's phase | Berry's phase, entry in the Compendium of Quantum Physics: Concepts,
Experiments, History and Philosophy, ed. F. Weinert, K. Hentschel, D.
Greenberger and B. Falkenburg (Springer), to appear
| quant-ph | berrys phase entry in the compendium of quantum physics concepts experiments history and philosophy ed f weinert k hentschel d greenberger and b falkenburg springer to appear | [['berrys', 'phase', 'entry', 'in', 'the', 'compendium', 'of', 'quantum', 'physics', 'concepts', 'experiments', 'history', 'and', 'philosophy', 'ed', 'f', 'weinert', 'k', 'hentschel', 'd', 'greenberger', 'and', 'b', 'falkenburg', 'springer', 'to', 'appear']] | [-0.17785325332510252, 0.15818580171024357, -0.14509072463476547, -0.02178658106950698, -0.09598903675322179, -0.20737214131211792, 0.0775434628939601, 0.2226987725675658, -0.28882622215206977, -0.3225111161807069, 0.013695284185275712, -0.2921764879590935, -0.17869560958610642, 0.12127142516827141, -0.09687258799870808, -0.022273148030594544, 0.03387800785195497, 0.021085990247903048, -0.06194662609723983, -0.2964959566791852, 0.12006970991690953, -0.013091737701971497, 0.22724139348914227, 0.053265748614514316, 0.007517029617533639, 0.03522235425879006, -0.0701228865870723, -0.0926559735779409, -0.22096549150430495, 0.043076747890423844, 0.40095035704197707, 0.21128591839913968, 0.20809601205918524, -0.3542374568749909, -0.046593220766495774, 0.048889304200808205, 0.025872061167050292, 0.027523748550771013, 0.05342448785625122, -0.3743049165027009, -0.021678615913346962, -0.1428180645323462, -0.06391527555469009, -0.028136570782711107, 0.19760533270460587, -0.08872872439247591, -0.19948105558890988, 0.07601853083232762, 0.07606325082963815, 0.15960984201067024, 0.056170253566017854, -0.2488103819390138, 0.04963161827375492, 0.02807434903526748, -0.08228793416034293, 0.14970632502809167, 0.09614102721766189, -0.09534179248536627, -0.2178347926862814, 0.37645653580073957, -0.058804200755225286, -0.02940545179363754, 0.1622689767844147, -0.17119789599544472, -0.09620408348187252, 0.051783749299054896, 0.10165892120588708, 0.040747909634201614, -0.03081572618059538, 0.21379554523068858, -0.015537114882910694, 0.06470972496188349, 0.14035881137371892, 0.005165300987384937, 0.21053350305495164, -0.001568929464728744, -0.08234756733118384, -0.020494596239317348, -0.031443413717810204, -0.09682040102779865, -0.30624804038692405, -0.2143761674977011, -0.18732269982703859, 0.1305700452239425, 0.02311153606515964, -0.08906379542141049, 0.3303688689376469, 0.07501612956359706, 0.09669432543321616, -0.09046736602774924, 0.11156388503257875, -0.07497626912124732, -0.07900206655634705, 0.06713925391711571, 0.11198048045237859, 0.26819111651706473, 0.17255439147077226, -0.18541520858114516, -0.05811907739283655, 0.1469553328567633] |
708.375 | Entanglement and correlation functions following a local quench: a
conformal field theory approach | We show that the dynamics resulting from preparing a one-dimensional quantum
system in the ground state of two decoupled parts, then joined together and
left to evolve unitarily with a translational invariant Hamiltonian (a local
quench), can be described by means of quantum field theory. In the case when
the corresponding theory is conformal, we study the evolution of the
entanglement entropy for different bi-partitions of the line. We also consider
the behavior of one- and two-point correlation functions. All our findings may
be explained in terms of a picture, that we believe to be valid more generally,
whereby quasiparticles emitted from the joining point at the initial time
propagate semiclassically through the system.
| cond-mat.stat-mech cond-mat.str-el hep-th quant-ph | we show that the dynamics resulting from preparing a onedimensional quantum system in the ground state of two decoupled parts then joined together and left to evolve unitarily with a translational invariant hamiltonian a local quench can be described by means of quantum field theory in the case when the corresponding theory is conformal we study the evolution of the entanglement entropy for different bipartitions of the line we also consider the behavior of one and twopoint correlation functions all our findings may be explained in terms of a picture that we believe to be valid more generally whereby quasiparticles emitted from the joining point at the initial time propagate semiclassically through the system | [['we', 'show', 'that', 'the', 'dynamics', 'resulting', 'from', 'preparing', 'a', 'onedimensional', 'quantum', 'system', 'in', 'the', 'ground', 'state', 'of', 'two', 'decoupled', 'parts', 'then', 'joined', 'together', 'and', 'left', 'to', 'evolve', 'unitarily', 'with', 'a', 'translational', 'invariant', 'hamiltonian', 'a', 'local', 'quench', 'can', 'be', 'described', 'by', 'means', 'of', 'quantum', 'field', 'theory', 'in', 'the', 'case', 'when', 'the', 'corresponding', 'theory', 'is', 'conformal', 'we', 'study', 'the', 'evolution', 'of', 'the', 'entanglement', 'entropy', 'for', 'different', 'bipartitions', 'of', 'the', 'line', 'we', 'also', 'consider', 'the', 'behavior', 'of', 'one', 'and', 'twopoint', 'correlation', 'functions', 'all', 'our', 'findings', 'may', 'be', 'explained', 'in', 'terms', 'of', 'a', 'picture', 'that', 'we', 'believe', 'to', 'be', 'valid', 'more', 'generally', 'whereby', 'quasiparticles', 'emitted', 'from', 'the', 'joining', 'point', 'at', 'the', 'initial', 'time', 'propagate', 'semiclassically', 'through', 'the', 'system']] | [-0.1307366955313084, 0.20546821856834485, -0.12343092094861756, 0.047078396381326264, 0.0245730831908683, -0.1336939723655712, 0.0019076988039734332, 0.3403213129689296, -0.2879318568463388, -0.2337307230214049, 0.06597602972862915, -0.2993488553584668, -0.12867280929104277, 0.16824959864913436, 0.02536595110340338, 0.01811600083142127, 0.050328452295823875, 0.05079827062671252, -0.09300980959986255, -0.22542197563432223, 0.3646363701360921, -0.007308379912405814, 0.251139127355265, 0.024775201922573997, 0.06706804093872115, 0.020826005646468776, 0.030765763283788897, 0.0763011013623327, -0.09849177791572099, 0.08068789353414454, 0.23004719101325527, 0.10186362562889005, 0.22055047620475912, -0.45535904180519937, -0.1982167684718182, 0.07954899159366298, 0.17259503733530118, 0.15250707092580565, 0.0008257443054421936, -0.31984576074561727, 0.049879253868487454, -0.1677171996582234, -0.1703722339098979, -0.056653646854356976, -0.016877461174756223, -0.021729156611336134, -0.22649251958845476, 0.08528922960389887, 0.05259510011028237, 0.027912719560207046, -0.06894355674127214, -0.017008874865591918, -0.06154976082402036, 0.14521929745387752, 0.02441130177497766, 0.027718718615544372, 0.127853497568714, -0.11782833379121464, -0.10451024284600607, 0.3629939638092509, -0.0793454526094393, -0.21956095874938591, 0.16840760616520256, -0.16123734929051511, -0.11402635517317736, 0.09243211908707101, 0.11505899782161833, 0.11991138841646413, -0.1537035903470895, 0.06554084863487412, -0.024223530011480313, 0.14029980186279045, 0.027755972234891693, 0.06014413222376453, 0.25318391485499186, 0.07810700484071531, 0.0531373747395711, 0.18950808042836, -0.01765552828121081, -0.1654148599431082, -0.3379283167683242, -0.1783230906074638, -0.21771356152685098, 0.10062042030652887, -0.05783130172839217, -0.1345996132218524, 0.43701039519357054, 0.14815271196908852, 0.21721645080884755, 0.05377823926647308, 0.23019064315839818, 0.1732938754374341, 0.03288007342959182, 0.09354839040468887, 0.22531855764100328, 0.09551405141808159, 0.045379430514131264, -0.24311339471636242, 0.007550459150878484, 0.07307395649044529] |
708.3751 | Errors and paradoxes in quantum mechanics | Errors and paradoxes in quantum mechanics, entry in the Compendium of Quantum
Physics: Concepts, Experiments, History and Philosophy, ed. F. Weinert, K.
Hentschel, D. Greenberger and B. Falkenburg (Springer), to appear
| quant-ph | errors and paradoxes in quantum mechanics entry in the compendium of quantum physics concepts experiments history and philosophy ed f weinert k hentschel d greenberger and b falkenburg springer to appear | [['errors', 'and', 'paradoxes', 'in', 'quantum', 'mechanics', 'entry', 'in', 'the', 'compendium', 'of', 'quantum', 'physics', 'concepts', 'experiments', 'history', 'and', 'philosophy', 'ed', 'f', 'weinert', 'k', 'hentschel', 'd', 'greenberger', 'and', 'b', 'falkenburg', 'springer', 'to', 'appear']] | [-0.10245427522327631, 0.1202987964835859, -0.1368786911179702, 0.031791110042362444, -0.07294269032295674, -0.22498484009936934, 0.056259437779625575, 0.21281872566549048, -0.3030278379277837, -0.3296628888816603, 0.02129310762299405, -0.3190069074832624, -0.15114570565281377, 0.153040237905037, -0.1477006546431972, 0.026493243933204683, 0.06416454408017377, 0.007064243538245078, -0.05089257909886299, -0.2906685285270214, 0.13882292879204597, 0.015195414957199846, 0.21638608306285836, 0.05886750175587593, 0.05826444913362784, 0.043071931543489615, -0.05005819566788212, -0.05089408303460767, -0.19784873492655256, 0.08081840831906564, 0.41368053817460615, 0.22490623280886682, 0.2849681393033074, -0.3836071229569854, -0.08960772621174974, 0.02202836532265909, 0.02700914027950456, 0.06927000849147237, 0.08152436660302262, -0.3677834086720982, -0.016276187834239775, -0.14065974692423497, -0.06662668720368416, 0.003047323350103632, 0.18046308633300565, -0.09641439864231695, -0.1711642325465237, 0.11207866034049901, 0.09046861353600698, 0.1623031429105228, 0.06374484637091236, -0.2160890949589591, 0.10261156316846609, 0.053566878120745384, -0.0870586815740793, 0.0759949451462636, 0.1257557540891632, -0.11784587026904186, -0.27071607647643936, 0.40714900556110567, -0.016149552298649665, -0.08653048260678206, 0.15577085868966195, -0.15390625169440622, -0.12479392601357352, 0.0003986076992605963, 0.11435562318130847, 0.029076188562377807, -0.03913934949424959, 0.20635546938583796, 0.012553470389496895, 0.060384389643947926, 0.1380726196277406, 0.03706946620537389, 0.20152749946611304, -0.03537834381624576, -0.09764016164286483, -0.038977292847008474, -0.01426372372905814, -0.1261691201718584, -0.34094911645497045, -0.2119037051715197, -0.1692819407119626, 0.13946925112677197, 0.025398377871287296, -0.09056944574319548, 0.3021325323835857, 0.11258066320160945, 0.07743787077525931, -0.06527961978328324, 0.11212584310241284, -0.06965529170608328, -0.05025946055050759, 0.07682413673929629, 0.13221776653682032, 0.2591400840770333, 0.14220185752116865, -0.18718877239453216, -0.0440277140155705, 0.09246609684440397] |
708.3752 | Contribution in combinatorics in commutative algebra.(ph-d thesis) | In the first chapter we present new results related on monomial ideals of
Borel type. Also, we introduce a new class of monomial ideals, called
$\de$-fixed ideals, which generalize the class of $p$-Borel ideals and we
extend several results to this new class.
In the second chapter, we compute the generic initial ideal, with repect to
the reverse lexicographic order, of an ideal which define a complete
intersection of embedding dimension three with strong Lefschetz property and we
show that it is an almost reverse lexicographic ideal. This enable us to give a
proof for Moreno's conjecture in the case $n=3$ and characteristic zero. Also,
we prove that the $d$-component of the generic initial ideal, with respect to
the reverse lexicographic order, of an ideal generated by a regular sequence of
homogeneous polynomials of degree $d$ is revlex, in a particular, but
important, case.
| math.AC | in the first chapter we present new results related on monomial ideals of borel type also we introduce a new class of monomial ideals called defixed ideals which generalize the class of pborel ideals and we extend several results to this new class in the second chapter we compute the generic initial ideal with repect to the reverse lexicographic order of an ideal which define a complete intersection of embedding dimension three with strong lefschetz property and we show that it is an almost reverse lexicographic ideal this enable us to give a proof for morenos conjecture in the case n3 and characteristic zero also we prove that the dcomponent of the generic initial ideal with respect to the reverse lexicographic order of an ideal generated by a regular sequence of homogeneous polynomials of degree d is revlex in a particular but important case | [['in', 'the', 'first', 'chapter', 'we', 'present', 'new', 'results', 'related', 'on', 'monomial', 'ideals', 'of', 'borel', 'type', 'also', 'we', 'introduce', 'a', 'new', 'class', 'of', 'monomial', 'ideals', 'called', 'defixed', 'ideals', 'which', 'generalize', 'the', 'class', 'of', 'pborel', 'ideals', 'and', 'we', 'extend', 'several', 'results', 'to', 'this', 'new', 'class', 'in', 'the', 'second', 'chapter', 'we', 'compute', 'the', 'generic', 'initial', 'ideal', 'with', 'repect', 'to', 'the', 'reverse', 'lexicographic', 'order', 'of', 'an', 'ideal', 'which', 'define', 'a', 'complete', 'intersection', 'of', 'embedding', 'dimension', 'three', 'with', 'strong', 'lefschetz', 'property', 'and', 'we', 'show', 'that', 'it', 'is', 'an', 'almost', 'reverse', 'lexicographic', 'ideal', 'this', 'enable', 'us', 'to', 'give', 'a', 'proof', 'for', 'morenos', 'conjecture', 'in', 'the', 'case', 'n3', 'and', 'characteristic', 'zero', 'also', 'we', 'prove', 'that', 'the', 'dcomponent', 'of', 'the', 'generic', 'initial', 'ideal', 'with', 'respect', 'to', 'the', 'reverse', 'lexicographic', 'order', 'of', 'an', 'ideal', 'generated', 'by', 'a', 'regular', 'sequence', 'of', 'homogeneous', 'polynomials', 'of', 'degree', 'd', 'is', 'revlex', 'in', 'a', 'particular', 'but', 'important', 'case']] | [-0.12160010777354817, 0.059401608747245684, -0.040867637242780815, 0.047088926287472875, -0.100050970528301, -0.12139699984223805, -0.04216063456875469, 0.3232303886530055, -0.35097861372616507, -0.17511172007488965, 0.10009603178895958, -0.22771826547629553, -0.12717317557618232, 0.17878204766778985, -0.07878462250121462, -0.0030701082539219987, 0.047374108219256916, 0.06976194095364968, -0.08153024406014929, -0.3173915001491583, 0.42638281688199076, 0.008505589466437067, 0.21268048284995095, 0.04780497981897804, 0.08559546770501725, -0.0031604500303805713, -0.017725502790122385, 0.05075161819162608, -0.2296543027390931, 0.15740043421777647, 0.23701948699423334, 0.12412490437797626, 0.24833756696406595, -0.3737375070898413, -0.07057926503934858, 0.19677336521210595, 0.1023609577678144, 0.06544598916047056, -0.024207231132018472, -0.18802074196053223, 0.1469780633580202, -0.2137097090821505, -0.21960005290563625, -0.08952580973453506, 0.04025534809973668, 0.03574928527199466, -0.33138246319427245, -0.02372035419635645, 0.1856946810386406, 0.10954583769428058, -0.01860718414659651, -0.06756691472001479, 0.011751043702095327, 0.049087882216554135, -0.031961340839240016, 0.03062930917957614, -0.016473895952131758, -0.10991287902555048, -0.17553449627815443, 0.3703238916498097, -0.06540871109374025, -0.19266907020773685, 0.17393250608961033, -0.17301999513571426, -0.181863450189449, 0.08952002719202092, 0.09349600666425598, 0.15258449788244677, -0.05534792386493843, 0.10298371881871274, -0.11835387831186535, 0.0887689115840312, 0.08233062949844859, 0.030016966249374017, 0.1291285019341699, 0.09747707535361898, 0.11481131604400424, 0.24293364275207507, -0.004662959572439358, -0.021408458751901775, -0.3571670468122711, -0.24652309802977343, -0.15574371197562611, 0.1126210513544387, -0.10259090901590624, -0.19705371868888466, 0.44563895100268575, 0.17285753428463785, 0.16575817104665116, 0.09908798745092215, 0.22950321997837228, 0.06009926276714344, -0.00048330927621835555, 0.07509469322230615, 0.15728896161587252, 0.149917058254802, 0.014892766150501622, -0.12371809483021268, 0.04234033480161985, 0.1691503770400206] |
708.3753 | Transient growth and coupling of vortex and wave modes in
self-gravitating gaseous discs | Flow nonnormality induced linear transient phenomena in thin self-gravitating
astrophysical discs are studied in the shearing sheet approximation. The
considered system includes two modes of perturbations: vortex and (spiral
density) wave. It is shown that self-gravity considerably alters the vortex
mode dynamics -- its transient (swing) growth may be several orders of
magnitude stronger than in the non-self-gravitating case and 2-3 times larger
than the transient growth of the wave mode. Based on this finding, we comment
on the role of vortex mode perturbations in a gravitoturbulent state. Also
described is the linear coupling of the perturbation modes, caused by the
differential character of disc rotation. The coupling is asymmetric -- vortex
mode perturbations are able to excite wave mode ones, but not vice versa. This
asymmetric coupling lends additional significance to the vortex mode as a
participant in spiral density waves and shocks manifestations in astrophysical
discs.
| astro-ph | flow nonnormality induced linear transient phenomena in thin selfgravitating astrophysical discs are studied in the shearing sheet approximation the considered system includes two modes of perturbations vortex and spiral density wave it is shown that selfgravity considerably alters the vortex mode dynamics its transient swing growth may be several orders of magnitude stronger than in the nonselfgravitating case and 23 times larger than the transient growth of the wave mode based on this finding we comment on the role of vortex mode perturbations in a gravitoturbulent state also described is the linear coupling of the perturbation modes caused by the differential character of disc rotation the coupling is asymmetric vortex mode perturbations are able to excite wave mode ones but not vice versa this asymmetric coupling lends additional significance to the vortex mode as a participant in spiral density waves and shocks manifestations in astrophysical discs | [['flow', 'nonnormality', 'induced', 'linear', 'transient', 'phenomena', 'in', 'thin', 'selfgravitating', 'astrophysical', 'discs', 'are', 'studied', 'in', 'the', 'shearing', 'sheet', 'approximation', 'the', 'considered', 'system', 'includes', 'two', 'modes', 'of', 'perturbations', 'vortex', 'and', 'spiral', 'density', 'wave', 'it', 'is', 'shown', 'that', 'selfgravity', 'considerably', 'alters', 'the', 'vortex', 'mode', 'dynamics', 'its', 'transient', 'swing', 'growth', 'may', 'be', 'several', 'orders', 'of', 'magnitude', 'stronger', 'than', 'in', 'the', 'nonselfgravitating', 'case', 'and', '23', 'times', 'larger', 'than', 'the', 'transient', 'growth', 'of', 'the', 'wave', 'mode', 'based', 'on', 'this', 'finding', 'we', 'comment', 'on', 'the', 'role', 'of', 'vortex', 'mode', 'perturbations', 'in', 'a', 'gravitoturbulent', 'state', 'also', 'described', 'is', 'the', 'linear', 'coupling', 'of', 'the', 'perturbation', 'modes', 'caused', 'by', 'the', 'differential', 'character', 'of', 'disc', 'rotation', 'the', 'coupling', 'is', 'asymmetric', 'vortex', 'mode', 'perturbations', 'are', 'able', 'to', 'excite', 'wave', 'mode', 'ones', 'but', 'not', 'vice', 'versa', 'this', 'asymmetric', 'coupling', 'lends', 'additional', 'significance', 'to', 'the', 'vortex', 'mode', 'as', 'a', 'participant', 'in', 'spiral', 'density', 'waves', 'and', 'shocks', 'manifestations', 'in', 'astrophysical', 'discs']] | [-0.23778853855456214, 0.18287025408002816, -0.07047461919256881, 0.09959778976897798, -0.10378602025902843, -0.06442220910924347, -0.0354929106718261, 0.3055070926409776, -0.24299283492959373, -0.23785322152671393, 0.1006022219287793, -0.24361777236391727, -0.1178521830476948, 0.19595658576294575, 0.04763495563752694, 0.017465409190850077, 0.007524104166157186, -0.036722871820978206, 0.012780072684208416, -0.17925193732642658, 0.30842359152890436, 0.06734007191908074, 0.2675855406575951, -0.044623389530748334, 0.008057846485203362, -0.05404585193083558, -0.005132729997730827, 0.022172702384685255, -0.17191943159504922, -0.007418333042464028, 0.1949133932876938, 0.015344012597231322, 0.23911191946954455, -0.5000695474828555, -0.2161388663855726, 0.030681408654694278, 0.19850369224847894, 0.15164999655537206, -0.028668264202990453, -0.2582985321362822, 0.027804268595813583, -0.16735586932739116, -0.19182795019858606, -0.038463204084857275, 0.06345873116834523, 0.00839352090954653, -0.254750851626677, 0.15774357603198677, 0.13125592791826196, 0.013186294572708541, -0.07527353115338348, -0.03834208477151338, -0.10905574299777819, -0.011688370436225852, 0.10058675993358308, 0.03784900730833003, 0.23244258068336096, -0.1725351468608906, -0.08438459296363138, 0.3963650186412189, -0.09644529116492977, -0.18451418177773282, 0.20236979760006324, -0.21487151459497336, -0.04090595984120202, 0.1977039681562567, 0.17932551012897532, 0.08748411925346909, -0.03395530953524915, -0.0054394319594805035, -0.0008236368754695247, 0.16216870925185103, 0.1423014732626305, 0.05288370369538052, 0.27535192439753614, 0.15707022580477625, 0.05876045227561095, 0.14566955668054368, -0.11107772386518039, -0.1183028665709322, -0.24231100667982478, -0.071836542816552, -0.12837530152389, 0.01972681393130038, -0.0622550710141284, -0.16364835159297336, 0.41461346040747754, 0.08837286049176378, 0.15556300529605735, -0.03223513028495116, 0.2929697556497708, 0.1436712705739136, 0.07943105628739482, 0.11757369717098262, 0.3589897313958978, 0.18012645740017347, 0.10487689531245986, -0.2959790185559541, 0.06435394993256012, 0.009885203128374398] |
708.3754 | Convergence in the no-core shell model with low-momentum two-nucleon
interactions | The convergence of no-core shell model (NCSM) calculations using
renormalization group evolved low-momentum two-nucleon interactions is studied
for light nuclei up to Li-7. Because no additional transformation was used in
applying the NCSM framework, the energy calculations satisfy the variational
principle for a given Hamiltonian. Dramatic improvements in convergence are
found as the cutoffs are lowered. The renormalization group equations are
truncated at two-body interactions, so the evolution is only approximately
unitary and converged energies for A > 2 vary with the cutoff. This
approximation is systematic, however, and for useful cutoff ranges the energy
variation is comparable to natural-size truncation errors inherent from the
initial chiral effective field theory potential.
| nucl-th | the convergence of nocore shell model ncsm calculations using renormalization group evolved lowmomentum twonucleon interactions is studied for light nuclei up to li7 because no additional transformation was used in applying the ncsm framework the energy calculations satisfy the variational principle for a given hamiltonian dramatic improvements in convergence are found as the cutoffs are lowered the renormalization group equations are truncated at twobody interactions so the evolution is only approximately unitary and converged energies for a 2 vary with the cutoff this approximation is systematic however and for useful cutoff ranges the energy variation is comparable to naturalsize truncation errors inherent from the initial chiral effective field theory potential | [['the', 'convergence', 'of', 'nocore', 'shell', 'model', 'ncsm', 'calculations', 'using', 'renormalization', 'group', 'evolved', 'lowmomentum', 'twonucleon', 'interactions', 'is', 'studied', 'for', 'light', 'nuclei', 'up', 'to', 'li7', 'because', 'no', 'additional', 'transformation', 'was', 'used', 'in', 'applying', 'the', 'ncsm', 'framework', 'the', 'energy', 'calculations', 'satisfy', 'the', 'variational', 'principle', 'for', 'a', 'given', 'hamiltonian', 'dramatic', 'improvements', 'in', 'convergence', 'are', 'found', 'as', 'the', 'cutoffs', 'are', 'lowered', 'the', 'renormalization', 'group', 'equations', 'are', 'truncated', 'at', 'twobody', 'interactions', 'so', 'the', 'evolution', 'is', 'only', 'approximately', 'unitary', 'and', 'converged', 'energies', 'for', 'a', '2', 'vary', 'with', 'the', 'cutoff', 'this', 'approximation', 'is', 'systematic', 'however', 'and', 'for', 'useful', 'cutoff', 'ranges', 'the', 'energy', 'variation', 'is', 'comparable', 'to', 'naturalsize', 'truncation', 'errors', 'inherent', 'from', 'the', 'initial', 'chiral', 'effective', 'field', 'theory', 'potential']] | [-0.06503753476923571, 0.14612514235147642, -0.12522590486439578, 0.16208828805300723, -0.03400662523873765, -0.09174945555764054, 0.015610529937559244, 0.4042622553304248, -0.23770543890620727, -0.32040191927087414, 0.020131819996846104, -0.29921560402993763, -0.04681632287133861, 0.1048967573608041, 0.04339632999425361, 0.07543570427822137, 0.08573524172443452, 0.02110575353983072, -0.1664949083164625, -0.18023489070030937, 0.28771102888971023, 0.10405936017162551, 0.22612251528461866, 0.08152601499043174, 0.04047886034422511, 0.004742116056416833, 0.013813709942709416, -0.018096703728404613, -0.10839945170601163, 0.08451395868879119, 0.23162357302151892, -0.014992895959064775, 0.24950882432760174, -0.4231813341174104, -0.24338420054131965, 0.06373836683673323, 0.18443012134590692, 0.16371006557905893, -0.05321853080713147, -0.2629102547610298, 0.027176547389682552, -0.23277560626626562, -0.1883746002920382, -0.14332540469978927, 0.012407429141436763, 0.011951430285255502, -0.2952718161251567, 0.10609683276611619, -0.03794076706020059, 0.05168195651326683, -0.09703136882702008, -0.15901581294954234, 0.000283679300107472, 0.0820288977269596, 0.08062824014458941, 0.07894680253870853, 0.16220975180643551, -0.0858585402783895, -0.018972306644731977, 0.4311133996164853, -0.033525876434938554, -0.16686087365715055, 0.1439995677402636, -0.0753057092308588, -0.1416605587860723, 0.18572055916259184, 0.10049289648331394, 0.07931388824870554, -0.15858204606407827, 0.17069688063742883, 0.02247534804537448, 0.18094260939247395, 0.0722217301735569, 0.01151446559692844, 0.09942989461679319, 0.1651394772642386, 0.03591521679415205, 0.013403501160818777, -0.04644092475704917, -0.16884393104856169, -0.3417482773235085, -0.03311694374974441, -0.16760120321911068, 0.04466537340680872, -0.1183653366407529, -0.11514111525814878, 0.36953547826771616, 0.12979195087960144, 0.12765383800713842, 0.04076912252813441, 0.25184126010318414, 0.1598061220923336, 0.1303558366569699, 0.08493523958455258, 0.3224011830250741, 0.1794823149663456, 0.015763856069005412, -0.2736291993311136, -0.002389915864231116, 0.09098424788974567] |
708.3755 | On derived equivalence classification of gentle two-cycle algebras | We classify, up to derived (equivalently, tilting-cotilting) equivalence all
nondegenerate gentle two-cycle algebras. We also give a partial classification
and formulate a conjecture in the degenerate case.
| math.RT | we classify up to derived equivalently tiltingcotilting equivalence all nondegenerate gentle twocycle algebras we also give a partial classification and formulate a conjecture in the degenerate case | [['we', 'classify', 'up', 'to', 'derived', 'equivalently', 'tiltingcotilting', 'equivalence', 'all', 'nondegenerate', 'gentle', 'twocycle', 'algebras', 'we', 'also', 'give', 'a', 'partial', 'classification', 'and', 'formulate', 'a', 'conjecture', 'in', 'the', 'degenerate', 'case']] | [-0.15913055761268846, 0.05019478010082686, -0.014502580105154603, 0.11968591992087939, -0.08430564222443435, -0.2183758224947033, 0.03702317260171252, 0.3454973243728832, -0.34420165481666726, -0.19133795297670145, 0.12685152935079747, -0.20793297872188743, -0.14225320014412757, 0.14802952224595678, -0.13263447265382167, -0.08552210895275628, 0.07662628819579603, 0.07207787440468867, -0.18045609489221265, -0.3641930108682977, 0.39207173607967516, -0.09603501522603135, 0.21577121772699887, 0.08155850903562235, 0.14688738304431792, 0.03222482563513848, -0.006638424540007556, 0.009234488458821067, -0.2240683644389113, 0.08916842651174024, 0.29304564830467655, 0.06820360850542784, 0.1680744252236629, -0.3403082776952673, -0.10271719569788763, 0.18338857508367962, 0.12300766133530824, 0.12764612416288368, -0.012630771034983572, -0.23247632900839327, 0.12673440337595013, -0.24274604657181986, -0.18260740105890566, -0.10270480054465157, 0.01598771189391199, -0.06514517826683543, -0.25084670163966993, 0.06924832913985786, 0.13991445144293485, 0.07152315074819382, -0.12963628837907756, -0.025852617669712613, -0.06742900016683119, 0.10587327692795682, -0.09439483450518714, -0.029013895809098526, -0.00036462420528685606, -0.08015523355937114, -0.17075766374667486, 0.34675253334420697, -0.07303627395864438, -0.20566789557536444, 0.17112792296231621, -0.09951860216204766, -0.1986843791997267, 0.13118012680637617, 0.13222545757889748, 0.1726224836031044, -0.07924002115787179, 0.09179212508024648, -0.1328185081688894, -0.0032658295154019638, 0.1713171048020875, -0.04035627127935489, 0.16677436365366535, 0.051733640815924714, 0.10951358900853882, 0.20691403111925832, 0.0387025147124573, 0.009798764233925828, -0.37041737028846033, -0.15999816338255726, 0.0180267601541278, 0.21447513749202093, -0.020049430650370022, -0.1953139879775268, 0.3319260771903727, 0.08314291187734515, 0.23997214219222465, 0.15552959722225312, 0.1752873494255322, 0.12364006852213708, 0.007579617064308237, 0.051862524274771137, 0.17333960333080203, 0.2720556753101172, -0.029972640236977627, -0.08502753458365246, -0.1281262871429876, 0.1980978469536812] |
708.3756 | Discussion of "Second order topological sensitivity analysis" by J.
Rocha de Faria et al | The article by J. Rocha de Faria et al. under discussion is concerned with
the evaluation of the perturbation undergone by the potential energy of a
domain $\Omega$ (in a 2-D, scalar Laplace equation setting) when a disk
$B_{\epsilon}$ of small radius $\epsilon$ centered at a given location
$\hat{\boldsymbol{x}\in\Omega$ is removed from $\Omega$, assuming either
Neumann or Dirichlet conditions on the boundary of the small `hole' thus
created. In each case, the potential energy $\psi(\Omega_{\epsilon})$ of the
punctured domain $\Omega_{\epsilon}=\Omega\setminus\B_{\epsilon}$ is expanded
about $\epsilon=0$ so that the first two terms of the perturbation are given.
The first (leading) term is the well-documented topological derivative of
$\psi$. The article under discussion places, logically, its main focus on the
next term of the expansion. However, it contains incorrrect results, as shown
in this discussion. In what follows, equations referenced with Arabic numbers
refer to those of the article under discussion.
| physics.class-ph | the article by j rocha de faria et al under discussion is concerned with the evaluation of the perturbation undergone by the potential energy of a domain omega in a 2d scalar laplace equation setting when a disk b_epsilon of small radius epsilon centered at a given location hatboldsymbolxinomega is removed from omega assuming either neumann or dirichlet conditions on the boundary of the small hole thus created in each case the potential energy psiomega_epsilon of the punctured domain omega_epsilonomegasetminusb_epsilon is expanded about epsilon0 so that the first two terms of the perturbation are given the first leading term is the welldocumented topological derivative of psi the article under discussion places logically its main focus on the next term of the expansion however it contains incorrrect results as shown in this discussion in what follows equations referenced with arabic numbers refer to those of the article under discussion | [['the', 'article', 'by', 'j', 'rocha', 'de', 'faria', 'et', 'al', 'under', 'discussion', 'is', 'concerned', 'with', 'the', 'evaluation', 'of', 'the', 'perturbation', 'undergone', 'by', 'the', 'potential', 'energy', 'of', 'a', 'domain', 'omega', 'in', 'a', '2d', 'scalar', 'laplace', 'equation', 'setting', 'when', 'a', 'disk', 'b_epsilon', 'of', 'small', 'radius', 'epsilon', 'centered', 'at', 'a', 'given', 'location', 'hatboldsymbolxinomega', 'is', 'removed', 'from', 'omega', 'assuming', 'either', 'neumann', 'or', 'dirichlet', 'conditions', 'on', 'the', 'boundary', 'of', 'the', 'small', 'hole', 'thus', 'created', 'in', 'each', 'case', 'the', 'potential', 'energy', 'psiomega_epsilon', 'of', 'the', 'punctured', 'domain', 'omega_epsilonomegasetminusb_epsilon', 'is', 'expanded', 'about', 'epsilon0', 'so', 'that', 'the', 'first', 'two', 'terms', 'of', 'the', 'perturbation', 'are', 'given', 'the', 'first', 'leading', 'term', 'is', 'the', 'welldocumented', 'topological', 'derivative', 'of', 'psi', 'the', 'article', 'under', 'discussion', 'places', 'logically', 'its', 'main', 'focus', 'on', 'the', 'next', 'term', 'of', 'the', 'expansion', 'however', 'it', 'contains', 'incorrrect', 'results', 'as', 'shown', 'in', 'this', 'discussion', 'in', 'what', 'follows', 'equations', 'referenced', 'with', 'arabic', 'numbers', 'refer', 'to', 'those', 'of', 'the', 'article', 'under', 'discussion']] | [-0.16081880481781102, 0.07264226571027797, -0.05961655931201272, 0.016076914966106415, -0.08894305413478934, -0.10515157053709522, 0.011263440408381738, 0.2864413023134047, -0.24059840309200808, -0.257509230357957, 0.1303190896481586, -0.2917157052886776, -0.11690963320951495, 0.15854566305966322, -0.08850739484639941, 0.025839586259988008, 0.05064117975254905, 0.10765876774934845, -0.0470960099628428, -0.2421891150216753, 0.38205800448001054, 0.035774153394918864, 0.2166393868143738, 0.05241182354034714, 0.05870801309073512, -0.0156910741694042, -0.046454480590505734, 0.0009263959590397361, -0.18065467539766664, 0.08329406941710557, 0.1971102074926926, 0.07753262022419626, 0.3234485830180347, -0.4025579226759469, -0.18677553802909744, 0.06125151018042945, 0.10204833391536441, 0.054465750809564874, -0.02150768001835483, -0.29400333258834305, 0.08663738533424395, -0.1550212142659196, -0.1598725418799505, 0.009057883063279506, 0.059008779055956334, 0.014810515252368836, -0.24905375632483306, 0.0860848969104053, 0.10235891530626556, 0.04575748789486372, -0.08256168599877532, -0.13584379031090066, -0.014488845892224668, 0.06596891684461702, 0.08172278228287017, 0.08745739947658472, 0.07292860698524034, -0.1088852769039982, -0.04533510175355736, 0.4054451170894835, -0.08896140684585892, -0.22066025502539965, 0.13345517540033647, -0.16858405938061574, -0.12093430771751122, 0.08326156489524944, 0.1007028274956004, 0.13424439455290363, -0.13972005595264314, 0.17053984223942584, -0.0284303917449304, 0.16425621499203974, 0.14536656590967645, -0.012259856419404969, 0.1818680683451627, 0.12242092019490276, 0.0636333182176006, 0.14865769185093491, -0.03536580927703249, -0.1076447229137961, -0.3684689775820718, -0.1194882568735112, -0.21867662447847477, 0.05015701181643332, -0.05198132773835419, -0.17407082749539565, 0.36352608232603717, 0.1000883264803431, 0.19996446524358666, 0.018290431119061798, 0.25135146534820607, 0.1223434777566581, 0.02443114133267146, 0.07959449689304973, 0.18057048770262757, 0.10424988803182107, 0.13177851723351827, -0.17958945553820943, 0.038427743061523266, 0.0822580037638545] |
708.3757 | Interacting Convection Zones | We present results from simulations to examine how the separation between two
convectively unstable layers affect their interaction. We show that two
convectively unstable layers remain connected via the overshooting plumes even
when they are separated by several pressure scale heights.
| astro-ph | we present results from simulations to examine how the separation between two convectively unstable layers affect their interaction we show that two convectively unstable layers remain connected via the overshooting plumes even when they are separated by several pressure scale heights | [['we', 'present', 'results', 'from', 'simulations', 'to', 'examine', 'how', 'the', 'separation', 'between', 'two', 'convectively', 'unstable', 'layers', 'affect', 'their', 'interaction', 'we', 'show', 'that', 'two', 'convectively', 'unstable', 'layers', 'remain', 'connected', 'via', 'the', 'overshooting', 'plumes', 'even', 'when', 'they', 'are', 'separated', 'by', 'several', 'pressure', 'scale', 'heights']] | [-0.1742190386327665, 0.31084540682822104, -0.04604982491582632, 0.12027925393748574, 0.021179173414300128, -0.116576984019314, 0.00822878495517482, 0.4548055967543183, -0.3709859757161722, -0.2896593186277442, 0.11433130096098999, -0.2558910343341711, -0.1395349558442831, 0.19704084997860397, 0.024848790657592983, -0.07253149935475937, 0.12871290186828957, -0.07234954879414744, -0.03237706383338153, -0.21429990500029994, 0.4199174427222915, -0.0020959995596147164, 0.1913392528119247, 0.051844177154324406, -0.024013004515592646, -0.17679914884360098, 0.01621020841980126, 0.050878506153821945, -0.1772628980413684, 0.04061134025545382, 0.22030971821812095, 0.016911417518447085, 0.2611117417492518, -0.5373484597700399, -0.20656248436468402, 0.013919310507977881, 0.20416555232254835, 0.09224881572512592, -0.03035192446720718, -0.2277041279778975, 0.10118994977688645, -0.1389298269229873, -0.08058982008852338, -0.0871897528584047, -0.05598601894226016, 0.04608103362616242, -0.19571027325511706, 0.10191064802702607, 0.07489249092901534, 0.027198678734371574, -0.10590973481672203, -0.09280465468310001, -0.14951401249301144, 0.17985072919443, 0.11636506125512647, -0.08509642153796626, 0.1976061880633962, -0.10460083434221948, 0.02822042106673485, 0.30877520819762494, -0.05695232218585727, -0.18302619280066432, 0.31291742270766965, -0.12671597911862703, -0.05936453259754472, 0.1310586693991975, 0.17670653599155386, 0.09500291179184144, -0.037202336503513636, -0.041238951712574176, -0.020786692411070916, 0.18468532811214283, 0.1404154144749954, -0.05847349227973964, 0.26570320910796885, 0.15763317747609462, 0.056294493150056864, 0.13344207470214403, -0.13994928065505696, -0.1317648017074822, -0.27030638112436706, -0.05097883452502329, -0.06368631903627296, -0.038109803788091354, -0.09176527361226518, -0.16429755421037354, 0.32587778593254524, 0.21528546848311658, 0.2532660813956726, 0.024832896910971257, 0.32821438215082377, 0.018932839878266904, 0.04643672394066504, 0.19243418831923387, 0.36498587287780715, 0.17909116954997, 0.04564505199924475, -0.21998713088857874, 0.06744075961774443, 0.04794538183501217] |
708.3758 | Numerical Color-Magnitude Diagram Analysis of SDSS Data and Application
to the New Milky Way satellites | We have tested the application to Sloan Digital Sky Survey data of the
software package MATCH, which fits color-magnitude diagrams (CMDs) to estimate
stellar population parameters and distances. These tests on a set of six
globular clusters show that these techniques recover their known properties.
New ways of using the CMD-fitting software enable us to deal with an extended
distribution of stars along the line-of-sight, to constrain the overall
properties of sparsely populated objects, and to detect the presence of stellar
overdensities in wide-area surveys. We then also apply MATCH to CMDs for twelve
recently discovered Milky Way satellites to derive in a uniform fashion their
distances, ages and metallicities. While the majority of them appear consistent
with a single stellar population, CVn I, UMa II, and Leo T exhibit (from SDSS
data alone) a more complex history with multiple epochs of star formation.
| astro-ph | we have tested the application to sloan digital sky survey data of the software package match which fits colormagnitude diagrams cmds to estimate stellar population parameters and distances these tests on a set of six globular clusters show that these techniques recover their known properties new ways of using the cmdfitting software enable us to deal with an extended distribution of stars along the lineofsight to constrain the overall properties of sparsely populated objects and to detect the presence of stellar overdensities in widearea surveys we then also apply match to cmds for twelve recently discovered milky way satellites to derive in a uniform fashion their distances ages and metallicities while the majority of them appear consistent with a single stellar population cvn i uma ii and leo t exhibit from sdss data alone a more complex history with multiple epochs of star formation | [['we', 'have', 'tested', 'the', 'application', 'to', 'sloan', 'digital', 'sky', 'survey', 'data', 'of', 'the', 'software', 'package', 'match', 'which', 'fits', 'colormagnitude', 'diagrams', 'cmds', 'to', 'estimate', 'stellar', 'population', 'parameters', 'and', 'distances', 'these', 'tests', 'on', 'a', 'set', 'of', 'six', 'globular', 'clusters', 'show', 'that', 'these', 'techniques', 'recover', 'their', 'known', 'properties', 'new', 'ways', 'of', 'using', 'the', 'cmdfitting', 'software', 'enable', 'us', 'to', 'deal', 'with', 'an', 'extended', 'distribution', 'of', 'stars', 'along', 'the', 'lineofsight', 'to', 'constrain', 'the', 'overall', 'properties', 'of', 'sparsely', 'populated', 'objects', 'and', 'to', 'detect', 'the', 'presence', 'of', 'stellar', 'overdensities', 'in', 'widearea', 'surveys', 'we', 'then', 'also', 'apply', 'match', 'to', 'cmds', 'for', 'twelve', 'recently', 'discovered', 'milky', 'way', 'satellites', 'to', 'derive', 'in', 'a', 'uniform', 'fashion', 'their', 'distances', 'ages', 'and', 'metallicities', 'while', 'the', 'majority', 'of', 'them', 'appear', 'consistent', 'with', 'a', 'single', 'stellar', 'population', 'cvn', 'i', 'uma', 'ii', 'and', 'leo', 't', 'exhibit', 'from', 'sdss', 'data', 'alone', 'a', 'more', 'complex', 'history', 'with', 'multiple', 'epochs', 'of', 'star', 'formation']] | [-0.025812123916087632, 0.03563573627060476, -0.11271838642035921, 0.11042710255585714, -0.1675039378444328, -0.06426210264261398, 0.08425084815179515, 0.44110350372890633, -0.1866252431047744, -0.39526603410195094, 0.032577116677809194, -0.2853192986221984, -0.0533027065220166, 0.23050024771914146, -0.07727547004793046, -0.03827072403510101, 0.10578415188420978, -0.08673670884713323, -0.030983703878721118, -0.3459997949733709, 0.2937547867865457, 0.003615304889131544, 0.17230365075455564, -0.14609304109277824, 0.04648018378227587, -0.07021621008041418, -0.13471727020482327, -0.00349177608505771, -0.1794212345511773, 0.08536860627039762, 0.2747997903675746, 0.1933408719418771, 0.17180907955237976, -0.3544941509931555, -0.1903678324823785, 0.06269518697728119, 0.22904618409100092, 0.07009378997948564, -0.0753861778613201, -0.29139681715363014, 0.09020931731821394, -0.20396226949782836, -0.2097754881607317, -0.008990172846501486, 0.03803137351416, 0.08792996997645888, -0.21596452550066816, 0.08719398690118396, -0.028221989360948403, 0.11601455997960228, -0.1146099420374311, -0.10488992983502815, -0.07042255449697324, 0.1576240085907759, -0.029838374441573653, 0.04821195995383379, 0.11970752055640332, -0.13828163319623046, -0.05131645239533908, 0.38011971551976687, -0.05208684053407827, -0.0174788998426973, 0.23926693871665825, -0.1609564051129079, -0.19707514823595476, 0.057377299255879026, 0.19021979170308137, 0.11170963168519342, -0.24178685512419584, 0.030385523353793867, 0.017823782649227522, 0.19171550381320734, 0.051349196266124233, 0.06379157005317716, 0.30625015547169215, 0.05577775187945614, 0.04701253798460433, 0.07299991191313085, -0.24578067778060764, -0.06876156692629189, -0.17295835814689375, -0.07253684318614735, -0.10132878386583696, 0.018191372432435553, -0.12405033251181724, -0.17455691799922432, 0.37501511922002667, 0.16173338489089575, 0.24124194966599236, 0.09069501238748974, 0.30150860234021415, 0.013865469271877373, 0.155019477000072, 0.08495567278522584, 0.24677489640938197, 0.1712126860058763, 0.07774649765956888, -0.19298323928847416, 0.07091094722394094, -0.015807933736747753] |
708.3759 | Roper resonances in chiral quark models | We derive a method to calculate the multi-channel K matrix applicable to a
broad class of models in which mesons linearly couple to the quark core. The
method is used to calculate pion scattering amplitudes in the energy region of
low-lying P11 and P33 resonances. A good agreement with experimental data is
achieved if in addition to the elastic channel we include the $\pi\Delta$ and
$\sigma N$ ($\sigma\Delta$) channels where the $\sigma$-meson models the
correlated two-pion decay. We solve the integral equation for the K matrix in
the approximation of separable kernels; it yields a sizable increase of the
widths of the $\Delta(1232)$ and the N(1440) resonances compared to the bare
quark values.
| hep-ph | we derive a method to calculate the multichannel k matrix applicable to a broad class of models in which mesons linearly couple to the quark core the method is used to calculate pion scattering amplitudes in the energy region of lowlying p11 and p33 resonances a good agreement with experimental data is achieved if in addition to the elastic channel we include the pidelta and sigma n sigmadelta channels where the sigmameson models the correlated twopion decay we solve the integral equation for the k matrix in the approximation of separable kernels it yields a sizable increase of the widths of the delta1232 and the n1440 resonances compared to the bare quark values | [['we', 'derive', 'a', 'method', 'to', 'calculate', 'the', 'multichannel', 'k', 'matrix', 'applicable', 'to', 'a', 'broad', 'class', 'of', 'models', 'in', 'which', 'mesons', 'linearly', 'couple', 'to', 'the', 'quark', 'core', 'the', 'method', 'is', 'used', 'to', 'calculate', 'pion', 'scattering', 'amplitudes', 'in', 'the', 'energy', 'region', 'of', 'lowlying', 'p11', 'and', 'p33', 'resonances', 'a', 'good', 'agreement', 'with', 'experimental', 'data', 'is', 'achieved', 'if', 'in', 'addition', 'to', 'the', 'elastic', 'channel', 'we', 'include', 'the', 'pidelta', 'and', 'sigma', 'n', 'sigmadelta', 'channels', 'where', 'the', 'sigmameson', 'models', 'the', 'correlated', 'twopion', 'decay', 'we', 'solve', 'the', 'integral', 'equation', 'for', 'the', 'k', 'matrix', 'in', 'the', 'approximation', 'of', 'separable', 'kernels', 'it', 'yields', 'a', 'sizable', 'increase', 'of', 'the', 'widths', 'of', 'the', 'delta1232', 'and', 'the', 'n1440', 'resonances', 'compared', 'to', 'the', 'bare', 'quark', 'values']] | [-0.09835133621205402, 0.1644352949636502, -0.07927150443707288, 0.11378436923167148, -0.019153256871762264, -0.13759903792720451, 0.06553787881491986, 0.3516757943444943, -0.22194926548477228, -0.22599868110867333, -0.024496460036761994, -0.3248830194857004, -0.06020917169609626, 0.12305429235587012, 0.0731857734981129, 0.09383536421859212, 0.08523913959980803, 0.08203413852169054, -0.08266267098024883, -0.17958742610088227, 0.3088852922737071, -0.0042660361015757105, 0.20054880509037623, 0.14217608621904412, 0.04348371459884091, 0.017957755205823125, -0.0016075461954537745, -0.07440663384586836, -0.14092067803824898, 0.09178958825387917, 0.26410206441698747, 0.03392986061084455, 0.13727832872387583, -0.35572370074161913, -0.1606872601046194, 0.1072577807590761, 0.17315876545730682, 0.1263672783507232, 0.028812825542759248, -0.27200997427138873, 0.09101631314353606, -0.1821232842594649, -0.14907178455815379, -0.08362088796674413, 0.024622629186451698, -0.03743597154662145, -0.37365607261262107, 0.08157032881492535, -0.03292152899589423, -0.029462617517045115, -0.08539001941495468, -0.23607666933892574, 0.02196443397592984, 0.06534199544179163, 0.056955860513293356, 0.06365503343460933, 0.11284931427675539, -0.14441243282197852, -0.06218318277722703, 0.38309349107918683, -0.11179402011932921, -0.18977214702594597, 0.10265109906502612, -0.1673725649747437, -0.07555414550830569, 0.2061289610192839, 0.19774408624054188, 0.09748116224093478, -0.14051400447280799, 0.10001155811380513, -0.05197814461029242, 0.19836211850685356, 0.05907413241478194, 0.05841864933885904, 0.10427192432097102, 0.13771201692010582, -0.02704996115371453, 0.10666926946919576, -0.11346740465594736, -0.09949997991768528, -0.3410488184112891, -0.09073116063280443, -0.1361111656070349, 0.011675178108374235, -0.07154072502556368, -0.1432303358446312, 0.3915505860561291, 0.09234059855869386, 0.2604727362554553, 0.031046380702018803, 0.26838773576361413, 0.15552216900957633, 0.10149325250979695, 0.08984874184367007, 0.26796145704204, 0.26743557455792893, 0.10785312253355453, -0.29916827207785596, -0.02137050185500916, 0.021317604974538617] |
708.376 | Interaction between ionic lattices and superconducting condensates | The interaction of the ionic lattice with the superconducting condensate is
treated in terms of the electrostatic force in superconductors. It is shown
that this force is similar but not identical to the force suggested by the
volume difference of the normal and superconducting states. The BCS theory
shows larger deviations than the two-fluid model.
| cond-mat.supr-con cond-mat.str-el | the interaction of the ionic lattice with the superconducting condensate is treated in terms of the electrostatic force in superconductors it is shown that this force is similar but not identical to the force suggested by the volume difference of the normal and superconducting states the bcs theory shows larger deviations than the twofluid model | [['the', 'interaction', 'of', 'the', 'ionic', 'lattice', 'with', 'the', 'superconducting', 'condensate', 'is', 'treated', 'in', 'terms', 'of', 'the', 'electrostatic', 'force', 'in', 'superconductors', 'it', 'is', 'shown', 'that', 'this', 'force', 'is', 'similar', 'but', 'not', 'identical', 'to', 'the', 'force', 'suggested', 'by', 'the', 'volume', 'difference', 'of', 'the', 'normal', 'and', 'superconducting', 'states', 'the', 'bcs', 'theory', 'shows', 'larger', 'deviations', 'than', 'the', 'twofluid', 'model']] | [-0.15459693794096396, 0.20553695073520595, -0.09190355671400374, 0.08092277888631956, 0.003905150903896852, -0.13843444176018238, 0.022990653263828292, 0.2931968620216305, -0.21478346366096626, -0.2675513885237954, -0.05419615448283201, -0.3050902426920154, -0.0995214928957549, 0.15523670234040104, 0.008910386573353952, 0.015003504400903528, -0.04876663285222921, 0.05390035957098007, -0.07727236022580077, -0.24985502919351513, 0.33117797597396104, 0.022106040836396543, 0.35282543125477706, 0.08756967931774191, 0.046875079492615025, -0.04295434770597653, 0.0688702881674875, 0.08869800828397274, -0.10674984657102456, 0.061235845744059506, 0.2042757086762735, -0.07674179358238524, 0.2161826068027453, -0.4591809223321351, -0.24049025128849527, 0.06112615196880969, 0.12805486179210923, 0.17574161751703782, -0.003017241979779845, -0.2664012735201554, 0.0009596235372803428, -0.17691073282198472, -0.14568526536564935, -0.04709646061740138, 0.024154458770697766, 0.0294680157168345, -0.24428027984262868, 0.12760379519313575, 0.06746449848128991, 0.05949471884153106, -0.07586631752889264, -0.1205677236684344, -0.008078563484278592, 0.017020769984546033, 0.07938660610340197, 0.09418664064089005, 0.1549525934880049, -0.1307022259612991, -0.006739634072238748, 0.4151861373335123, -0.061423461407221935, -0.17250093959949234, 0.1846743534827097, -0.17356279910626737, 0.009647445685484193, 0.1501278273083947, 0.01951331181282347, 0.02881711965257471, -0.16690981074828992, 0.047764136844356965, -0.06215193127705292, 0.18765810684046963, 0.03375990136780522, 0.005904773648150943, 0.20112711184404114, 0.19697417829355054, 0.03415414049205455, 0.13279354713582012, -0.06179367926987735, -0.1239318006417968, -0.2918237535113638, -0.1449232993986119, -0.2424251905092123, 0.005341261189526201, -0.04114152923707893, -0.2160846922054506, 0.3454052788628773, 0.1472916716455736, 0.12520808308300646, -0.023924332061274485, 0.2874228117818182, 0.13159713352480057, 0.1455508522858674, 0.03828902853314172, 0.3526984006505121, 0.16519098553213885, 0.09035971330648118, -0.3297827595294538, 0.05968513877385042, 0.061700005558404054] |
708.3761 | Multi-agent systems, Equiprobability, Gamma distributions and other
Geometrical questions | A set of many identical interacting agents obeying a global additive
constraint is considered. Under the hypothesis of equiprobability in the
high-dimensional volume delimited in phase space by the constraint, the
statistical behavior of a generic agent over the ensemble is worked out. The
asymptotic distribution of that statistical behavior is derived from
geometrical arguments. This distribution is related with the Gamma
distributions found in several multi-agent economy models. The parallelism with
all these systems is established. Also, as a collateral result, a formula for
the volume of high-dimensional symmetrical bodies is proposed.
| nlin.CD cond-mat.stat-mech cs.MA physics.soc-ph | a set of many identical interacting agents obeying a global additive constraint is considered under the hypothesis of equiprobability in the highdimensional volume delimited in phase space by the constraint the statistical behavior of a generic agent over the ensemble is worked out the asymptotic distribution of that statistical behavior is derived from geometrical arguments this distribution is related with the gamma distributions found in several multiagent economy models the parallelism with all these systems is established also as a collateral result a formula for the volume of highdimensional symmetrical bodies is proposed | [['a', 'set', 'of', 'many', 'identical', 'interacting', 'agents', 'obeying', 'a', 'global', 'additive', 'constraint', 'is', 'considered', 'under', 'the', 'hypothesis', 'of', 'equiprobability', 'in', 'the', 'highdimensional', 'volume', 'delimited', 'in', 'phase', 'space', 'by', 'the', 'constraint', 'the', 'statistical', 'behavior', 'of', 'a', 'generic', 'agent', 'over', 'the', 'ensemble', 'is', 'worked', 'out', 'the', 'asymptotic', 'distribution', 'of', 'that', 'statistical', 'behavior', 'is', 'derived', 'from', 'geometrical', 'arguments', 'this', 'distribution', 'is', 'related', 'with', 'the', 'gamma', 'distributions', 'found', 'in', 'several', 'multiagent', 'economy', 'models', 'the', 'parallelism', 'with', 'all', 'these', 'systems', 'is', 'established', 'also', 'as', 'a', 'collateral', 'result', 'a', 'formula', 'for', 'the', 'volume', 'of', 'highdimensional', 'symmetrical', 'bodies', 'is', 'proposed']] | [-0.1538651445279679, 0.09248142647406747, -0.14545442134903003, 0.087990049073743, -0.024663163203826194, -0.12340986968508812, 0.0442793410852231, 0.3122698711832204, -0.2554019966553296, -0.27313082941597505, 0.09768688177146326, -0.25127759832207874, -0.14067840032900372, 0.18313946756434135, -0.07489228321700006, 0.09079068684850329, 0.030620060831068024, 0.06220172469814619, -0.04260418869264584, -0.24589660673612548, 0.3253569732450189, 0.02972380940612125, 0.2989589543312147, -0.03728688849569348, 0.12496307939891854, 0.008431248001313658, -0.008367969203860529, 0.06160643182147885, -0.10120913208381245, 0.12712566187274793, 0.24001335178087096, 0.1427629344435709, 0.28935408793009254, -0.3562231468417311, -0.23609316977922634, 0.13244316443019816, 0.09600659164409804, 0.05855518102806102, 0.003217436703703096, -0.2701577001541693, 0.04853125084291703, -0.18450808869574659, -0.14755984323640023, -0.0558711000247508, 0.01891509908682076, 0.03991766289497415, -0.2857003113435161, 0.06537591129690358, 0.09473583772177657, 0.08243222144101897, -0.06436381075388542, -0.10942012371535423, -0.013178749012470405, 0.09423149931895476, 0.07842818255566301, -0.02054718176468766, 0.1347747763759026, -0.10913305903624704, -0.08536775944934737, 0.3989871243535671, -0.018194248329006856, -0.2605776990944099, 0.1682628041974479, -0.13384901520405565, -0.15731806404746554, 0.13237921165687944, 0.1465156916428798, 0.07899829624120587, -0.1979513657429526, 0.11691397962270565, -0.0995892893663177, 0.14270500250921775, 0.03967507936621225, -0.0036935186043622033, 0.20225972432883516, 0.17646831669281388, 0.08243224004180902, 0.1575880637142046, -0.03563730816809981, -0.20458519402190403, -0.32655654517152616, -0.12937549769037193, -0.21343028583558857, 0.03591180074038685, -0.13493730638036003, -0.168603451727728, 0.31764670494963887, 0.08053142153057119, 0.19250571972099684, 0.08941571752200284, 0.2586276169505812, 0.10966291174718795, 0.022556998286276095, 0.06642410838325578, 0.20664858243738612, 0.11373158048848392, 0.07450175382852835, -0.18527925450114474, 0.1171765921597359, 0.020914597982560755] |
708.3762 | Where is the pseudoscalar glueball ? | The pseudoscalar mesons with the masses higher than 1 GeV are assumed to
belong to the meson decuplet including the glueball as the basis state
supplementing the standard $SU(3)_F$ nonet of light $q\bar{q}$ states
$(u,d,s)$. The decuplet is investigated by means of an algebraic approach based
on hypothesis of vanishing the exotic $SU(3)_F$ commutators of "charges" and
their time derivatives. These commutators result in a system of equations
determining contents of the isoscalar octet state in the physical isoscalar
mesons as well as the mass formula including all masses of the decuplet:
$\pi(1300)$, K(1460), $\eta(1295)$, $\eta(1405)$ and $\eta(1475)$. The physical
isoscalar mesons $\eta_i$, are expressed as superpositions of the "ideal"
$q\bar{q}$ states ($N$ and $S$) and the glueball $G$ with the mixing
coefficient matrix following from the exotic commutator restrictions. Among
four one-parameter families of the calculated mixing matrix (numerous solutions
result from bad quality of data on the $\pi(1300)$ and K(1460) masses) there is
one family attributing the glueball-dominant composition to the $\eta(1405)$
meson. Similarity between the pseudoscalar and scalar decuplets, analogy
between the whole spectra of the $0^{-+}$ and $0^{++}$ mesons and affinity of
the glueball with excited $q\bar{q}$ states are also noticed.
| hep-ph | the pseudoscalar mesons with the masses higher than 1 gev are assumed to belong to the meson decuplet including the glueball as the basis state supplementing the standard su3_f nonet of light qbarq states uds the decuplet is investigated by means of an algebraic approach based on hypothesis of vanishing the exotic su3_f commutators of charges and their time derivatives these commutators result in a system of equations determining contents of the isoscalar octet state in the physical isoscalar mesons as well as the mass formula including all masses of the decuplet pi1300 k1460 eta1295 eta1405 and eta1475 the physical isoscalar mesons eta_i are expressed as superpositions of the ideal qbarq states n and s and the glueball g with the mixing coefficient matrix following from the exotic commutator restrictions among four oneparameter families of the calculated mixing matrix numerous solutions result from bad quality of data on the pi1300 and k1460 masses there is one family attributing the glueballdominant composition to the eta1405 meson similarity between the pseudoscalar and scalar decuplets analogy between the whole spectra of the 0 and 0 mesons and affinity of the glueball with excited qbarq states are also noticed | [['the', 'pseudoscalar', 'mesons', 'with', 'the', 'masses', 'higher', 'than', '1', 'gev', 'are', 'assumed', 'to', 'belong', 'to', 'the', 'meson', 'decuplet', 'including', 'the', 'glueball', 'as', 'the', 'basis', 'state', 'supplementing', 'the', 'standard', 'su3_f', 'nonet', 'of', 'light', 'qbarq', 'states', 'uds', 'the', 'decuplet', 'is', 'investigated', 'by', 'means', 'of', 'an', 'algebraic', 'approach', 'based', 'on', 'hypothesis', 'of', 'vanishing', 'the', 'exotic', 'su3_f', 'commutators', 'of', 'charges', 'and', 'their', 'time', 'derivatives', 'these', 'commutators', 'result', 'in', 'a', 'system', 'of', 'equations', 'determining', 'contents', 'of', 'the', 'isoscalar', 'octet', 'state', 'in', 'the', 'physical', 'isoscalar', 'mesons', 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708.3763 | Rate of Escape on Free Products | Suppose we are given the free product $V$ of a finite family of finite or
countable sets $(V_i)_{i\in\mathcal{I}}$ and probability measures on each
$V_i$, which govern random walks on it. We consider a transient random walk on
the free product arising naturally from the random walks on the $V_i$. We prove
the existence of the rate of escape with respect to the block length, that is,
the speed, at which the random walk escapes to infinity, and furthermore we
compute formulas for it. For this purpose, we present three different
techniques providing three different, equivalent formulas.
| math.PR | suppose we are given the free product v of a finite family of finite or countable sets v_i_iinmathcali and probability measures on each v_i which govern random walks on it we consider a transient random walk on the free product arising naturally from the random walks on the v_i we prove the existence of the rate of escape with respect to the block length that is the speed at which the random walk escapes to infinity and furthermore we compute formulas for it for this purpose we present three different techniques providing three different equivalent formulas | [['suppose', 'we', 'are', 'given', 'the', 'free', 'product', 'v', 'of', 'a', 'finite', 'family', 'of', 'finite', 'or', 'countable', 'sets', 'v_i_iinmathcali', 'and', 'probability', 'measures', 'on', 'each', 'v_i', 'which', 'govern', 'random', 'walks', 'on', 'it', 'we', 'consider', 'a', 'transient', 'random', 'walk', 'on', 'the', 'free', 'product', 'arising', 'naturally', 'from', 'the', 'random', 'walks', 'on', 'the', 'v_i', 'we', 'prove', 'the', 'existence', 'of', 'the', 'rate', 'of', 'escape', 'with', 'respect', 'to', 'the', 'block', 'length', 'that', 'is', 'the', 'speed', 'at', 'which', 'the', 'random', 'walk', 'escapes', 'to', 'infinity', 'and', 'furthermore', 'we', 'compute', 'formulas', 'for', 'it', 'for', 'this', 'purpose', 'we', 'present', 'three', 'different', 'techniques', 'providing', 'three', 'different', 'equivalent', 'formulas']] | [-0.12741974889006663, 0.20166814397334268, -0.04886249334698445, 0.033470035834532036, -0.027007471243115633, -0.14370238593730486, 0.06157418462741924, 0.40094365786613995, -0.3048112959551968, -0.17009889675659667, 0.11197927945146435, -0.3067216005764509, -0.11318540523367884, 0.18528019706779894, -0.03753756648266541, 0.03759746058402877, 0.04396309261455348, 0.12208144335860485, -0.039428853148006295, -0.25138538929045595, 0.3408371309112561, -0.04950895308467903, 0.2727736006294818, 0.047620513228895635, 0.17911129257408903, 0.04686494457572209, -0.0527820817292913, 0.02117489827306647, -0.20404546532181006, 0.09743184376704066, 0.15227640298636336, 0.13987090244252037, 0.278596775388532, -0.3923142046716652, -0.16552484386453503, 0.18676301446792326, 0.126414464036689, 0.09875009943927197, -0.0003490955250239686, -0.2665153245588667, 0.11617903009694265, -0.15217363258921787, -0.1346508133078092, 0.011123603861778974, 0.03896282372113905, 0.06654399459887492, -0.26308771177734197, -0.004880814881701219, 0.06630835280275757, 0.022966477948878156, -0.029467979578399344, -0.1119391123421098, 0.00928929957414144, 0.14253533755331055, 0.028875538606294677, -0.01579519582324122, 0.09960411460089841, -0.02739882154243165, -0.14015755072039993, 0.3894154559153034, -0.07953197133580321, -0.23775404385830226, 0.20557604341914779, -0.17928977561379342, -0.16365047706487149, 0.10571289702906812, 0.1758786544693928, 0.14214673119744187, -0.0892587850164426, 0.10042848956991772, -0.07597516506518188, 0.04793375729534187, 0.07050616371102239, 0.03415023006596848, 0.15582718708013232, 0.06648029116423507, 0.12990189139290076, 0.18143220834041895, -0.049843397329708466, -0.11179656299125207, -0.34668782676423066, -0.1422178198926543, -0.20097918836890083, 0.12525848520331476, -0.16937944711351424, -0.23763608064404443, 0.3986222595956765, 0.15915458188392223, 0.22220195851435787, 0.1530430692321572, 0.2290866984936752, 0.16234678304509112, 0.0032422070832628953, 0.09715143293142318, 0.07641569586397198, 0.12362968654641392, 0.006706252949018227, -0.16449907075148076, 0.07806572040640994, 0.14912776056383] |
708.3764 | A Radio Resource Management strategy for downlink cooperation in
distributed networks | This paper has been withdrawn by the author
| cs.IT math.IT | this paper has been withdrawn by the author | [['this', 'paper', 'has', 'been', 'withdrawn', 'by', 'the', 'author']] | [-0.11762839742004871, -0.04127746832091361, -0.17016396392136812, -0.1582642109860899, -0.18072871817275882, -0.04020218155346811, -0.09601712167204823, 0.33764172717928886, -0.2455208501778543, -0.3865965995937586, 0.12438089866191149, -0.3554150704294443, -0.17133164615370333, -0.03124168887734413, -0.36054937075823545, 0.1437747087329626, 0.013894470408558846, -0.08646601857617497, 0.03968040947802365, -0.44155952520668507, 0.3856544243171811, 0.2051150193437934, 0.24313315842300653, 0.28879539016634226, 0.01792514289263636, -0.11099567479686812, -0.150363301159814, -0.012852307874709368, -0.18718480365350842, 0.11566333845257759, 0.24745671264827251, -0.0028045814542565495, 0.5385416708886623, -0.34438634663820267, -0.30120751447975636, 0.17140627279877663, 0.2358643733896315, 0.17914216313511133, -0.17815985204651952, -0.4527229657396674, 0.2826807617675513, -0.46056563034653664, -0.10914342041360214, 0.03394955489784479, 0.17619249247945845, -0.16789651243016124, 0.012177631724625826, 0.015268271672539413, 0.24323535524308681, 0.28174969321116805, 0.09409693954512477, -0.17885676678270102, 0.1121640873607248, 0.20878781052306294, 0.2662921668961644, 0.17856195924105123, -0.11076245503500104, 0.03515274965320714, -0.10488076554611325, 0.2949782107025385, 0.10774732450954616, -0.2133938658516854, -0.006887872703373432, -0.016766269749496132, -0.21324935229495168, 0.1388505413196981, 0.10939346149098128, 0.11482253042049706, -0.38184377225115895, 0.3267487980192527, -0.1536816138541326, 0.11378946155309677, 0.2899414573330432, -0.15725570172071457, 0.06411296129226685, 0.1768848430365324, -0.04887810174841434, 0.24661389319226146, 0.016434904653578997, 0.06990024750120938, -0.11952118761837482, -0.22655752301216125, -0.3338954234495759, 0.048650073003955185, 0.3709160953294486, 0.0035205441527068615, 0.46419219486415386, 0.17595687042921782, 0.1032504877075553, -0.09770585736259818, 0.3413960309699178, 0.22401662204356398, 0.06869106600061059, -0.03617032617330551, 0.4000306993839331, 0.12336210630019195, 0.27873920532874763, 0.025590486358851194, 0.36459797713905573, 0.29932648269459605] |
708.3765 | The effects of lepton KK modes on the lepton electric dipole moments in
the Randall Sundrum scenario | We study the charged lepton electric dipole moments in the Randall Sundrum
model where the leptons and the gauge fields are accessible to the extra
dimension. We observe that the electron (muon; tau) electric dipole moment
reaches to the value of the order of 10^{-26} e-cm (10^{-20} e-cm; 10^{-20}
e-cm) with the inclusion of the lepton KK modes.
| hep-ph | we study the charged lepton electric dipole moments in the randall sundrum model where the leptons and the gauge fields are accessible to the extra dimension we observe that the electron muon tau electric dipole moment reaches to the value of the order of 1026 ecm 1020 ecm 1020 ecm with the inclusion of the lepton kk modes | [['we', 'study', 'the', 'charged', 'lepton', 'electric', 'dipole', 'moments', 'in', 'the', 'randall', 'sundrum', 'model', 'where', 'the', 'leptons', 'and', 'the', 'gauge', 'fields', 'are', 'accessible', 'to', 'the', 'extra', 'dimension', 'we', 'observe', 'that', 'the', 'electron', 'muon', 'tau', 'electric', 'dipole', 'moment', 'reaches', 'to', 'the', 'value', 'of', 'the', 'order', 'of', '1026', 'ecm', '1020', 'ecm', '1020', 'ecm', 'with', 'the', 'inclusion', 'of', 'the', 'lepton', 'kk', 'modes']] | [-0.10873023505274464, 0.3043336983577445, 0.07857944320180807, 0.11173786425256524, -0.0360551787508202, -0.08589371936074619, -0.007940474627659944, 0.29983813668890247, -0.17622844833109913, -0.32311595488211203, -0.04347243826186027, -0.31613082721315583, 0.04250536586061634, 0.05213616251672522, 0.11000623348458059, -0.016425685870766253, -0.03362751784152351, 0.06281262501303492, -0.02750439181972038, -0.2078378739895235, 0.2121072786795939, 0.04912839467027064, 0.25196158474889296, 0.11919585991538419, 0.1197491410862783, -0.04064557168247371, 0.058303098130071986, -0.07758694813297741, -0.09614894711394927, 0.12235892013293402, 0.14010842889547348, 0.05314164938292755, 0.048930783402817, -0.4256161506576785, -0.056339370841481565, 0.16100458034860163, 0.11403937858593619, 0.086562547415238, 0.00505613129393294, -0.30481733339999256, 0.10909814768920428, -0.20947917119262677, -0.1600062249585633, -0.07372557461775582, -0.00624023035072304, -0.04961302077221074, -0.43029638951451615, 0.08882687599719341, 0.00923378625282504, -0.017174361562677497, -0.06213403739645306, -0.2205259614335052, -0.012271366949225294, -0.023285031031640566, 0.25608573044481653, 0.06316653393000236, 0.23164252704812277, -0.1383013858225052, -0.16271020112366513, 0.35670037271358584, -0.09779957779241598, -0.16406972654934587, 0.0986947431630487, -0.2902603065273885, -0.1120363042192084, 0.1621647322036583, 0.2074231918226799, 0.09666786735961695, -0.1560669057231782, 0.1867240424546943, -0.02657391598191241, 0.15023444103205513, 0.08056461834348738, -0.01651216342499287, 0.22619119325074658, 0.15184853540669227, 0.05993682213512988, 0.056564152939245105, -0.18854752067348052, -0.00040487721883531277, -0.3883964042982151, -0.14991975866322374, -0.12160344211513112, 0.11426873383080137, -0.1063183899484635, -0.07787680102448011, 0.4574415651952912, 0.1655426499562274, 0.19239956488559856, -0.02531339340554229, 0.2938291730423426, 0.1201545015812434, 0.0784460020749348, 0.050395633065912486, 0.34918737737461925, 0.2022401315063752, 0.1167767198780423, -0.3056912590139385, -0.05413816241820439, 0.07685748132844937] |
708.3766 | Rate of Escape on the Lamplighter Tree | Suppose we are given a homogeneous tree $\mathcal{T}_q$ of degree $q\geq 3$,
where at each vertex sits a lamp, which can be switched on or off. This
structure can be described by the wreath product $(\mathbb{Z}/2)\wr \Gamma$,
where $\Gamma=\ast_{i=1}^q \mathbb{Z}/2$ is the free product group of $q$
factors $\mathbb{Z}/2$. We consider a transient random walk on a Cayley graph
of $(\mathbb{Z}/2)\wr \Gamma$, for which we want to compute lower and upper
bounds for the rate of escape, that is, the speed at which the random walk
flees to infinity.
| math.PR | suppose we are given a homogeneous tree mathcalt_q of degree qgeq 3 where at each vertex sits a lamp which can be switched on or off this structure can be described by the wreath product mathbbz2wr gamma where gammaast_i1q mathbbz2 is the free product group of q factors mathbbz2 we consider a transient random walk on a cayley graph of mathbbz2wr gamma for which we want to compute lower and upper bounds for the rate of escape that is the speed at which the random walk flees to infinity | [['suppose', 'we', 'are', 'given', 'a', 'homogeneous', 'tree', 'mathcalt_q', 'of', 'degree', 'qgeq', '3', 'where', 'at', 'each', 'vertex', 'sits', 'a', 'lamp', 'which', 'can', 'be', 'switched', 'on', 'or', 'off', 'this', 'structure', 'can', 'be', 'described', 'by', 'the', 'wreath', 'product', 'mathbbz2wr', 'gamma', 'where', 'gammaast_i1q', 'mathbbz2', 'is', 'the', 'free', 'product', 'group', 'of', 'q', 'factors', 'mathbbz2', 'we', 'consider', 'a', 'transient', 'random', 'walk', 'on', 'a', 'cayley', 'graph', 'of', 'mathbbz2wr', 'gamma', 'for', 'which', 'we', 'want', 'to', 'compute', 'lower', 'and', 'upper', 'bounds', 'for', 'the', 'rate', 'of', 'escape', 'that', 'is', 'the', 'speed', 'at', 'which', 'the', 'random', 'walk', 'flees', 'to', 'infinity']] | [-0.1350074011242277, 0.23090814096246695, -0.0779598064958876, 0.013646245074490908, -0.07714052481555142, -0.17266104002158308, 0.11332472733243606, 0.4055675096528301, -0.30351232910572096, -0.19846811716249863, 0.13469139612713005, -0.2785772197165115, -0.0914157728128525, 0.15852906620725557, -0.03675834798838857, -0.0395976438750188, 0.040362730665608894, 0.18031163658232016, -0.00887761803798724, -0.25540393402124484, 0.29946595954513827, 0.017342991368888422, 0.19442082744438288, 0.055345347411064214, 0.0843343709921735, 0.04270135761281952, 0.015880396605880802, -0.0006698924874843553, -0.1856185939941497, 0.053803515923750954, 0.1840971100339016, 0.07904651973309905, 0.21597576350634268, -0.3722749495402325, -0.1712819261498056, 0.2090834150264083, 0.1569497751120781, 0.01362481883450866, 0.009537323066683184, -0.253424336115808, 0.1180926390170921, -0.1499856576842302, -0.1283533860073793, 0.03758273032212327, 0.04609232355818846, 0.032759224714408085, -0.3241923999800726, -0.011515642408021661, 0.06986173367950806, 0.010348993902795861, 0.04371414231244734, -0.10691588273445188, -0.01999673883019145, 0.1410397370156377, -0.0405617137114669, 0.08390958883886247, 0.13931539165245932, -0.10079096104722297, -0.1422421500888155, 0.38692241053768367, -0.08800119060893045, -0.21134793047988137, 0.12814998571479388, -0.20999087177238665, -0.16927956938635297, 0.13055707964786264, 0.2130830272663991, 0.11740494896332886, -0.07420114891368051, 0.14664102626802347, -0.09182734261632378, 0.10589275763608343, 0.10771905014096478, -0.054307991395119666, 0.12988580105999528, 0.1090531031178787, 0.1310731961749234, 0.17582827788875113, -0.022450952666140226, -0.02422369817315146, -0.31364158090463906, -0.12922735956259246, -0.19991418496207441, 0.15860488531071432, -0.17478436898683106, -0.19251674285759543, 0.37812381237745285, 0.0726162621339913, 0.21076544213953408, 0.10947768386794514, 0.21844459038097844, 0.17532123512653416, 0.020936166499416497, 0.15992808652781818, 0.1145906601491016, 0.1144203565944376, -0.054789078519354724, -0.13112232504889024, 0.06581953693950159, 0.14350607641431135] |
708.3767 | Acceleration of Lamplighter Random Walks | Suppose we are given an infinite, finitely generated group $G$ and a
transient random walk on the wreath product $(\mathbb{Z}/ 2\mathbb{Z})\wr G$,
such that its projection on $G$ is transient and has finite first moment. This
random walk can be interpreted as a lamplighter random walk on $G$. Our aim is
to show that the random walk on the wreath product escapes to infinity with
respect to a suitable (pseudo-)metric faster than its projection onto $G$. We
also address the case where the pseudo-metric is the length of a shortest
``travelling salesman tour''. In this context, and excluding some degenerate
cases if $G=\mathbb{Z}$, the linear rate of escape is strictly bigger than the
rate of escape of the lamplighter random walk's projection on $G$.
| math.PR | suppose we are given an infinite finitely generated group g and a transient random walk on the wreath product mathbbz 2mathbbzwr g such that its projection on g is transient and has finite first moment this random walk can be interpreted as a lamplighter random walk on g our aim is to show that the random walk on the wreath product escapes to infinity with respect to a suitable pseudometric faster than its projection onto g we also address the case where the pseudometric is the length of a shortest travelling salesman tour in this context and excluding some degenerate cases if gmathbbz the linear rate of escape is strictly bigger than the rate of escape of the lamplighter random walks projection on g | [['suppose', 'we', 'are', 'given', 'an', 'infinite', 'finitely', 'generated', 'group', 'g', 'and', 'a', 'transient', 'random', 'walk', 'on', 'the', 'wreath', 'product', 'mathbbz', '2mathbbzwr', 'g', 'such', 'that', 'its', 'projection', 'on', 'g', 'is', 'transient', 'and', 'has', 'finite', 'first', 'moment', 'this', 'random', 'walk', 'can', 'be', 'interpreted', 'as', 'a', 'lamplighter', 'random', 'walk', 'on', 'g', 'our', 'aim', 'is', 'to', 'show', 'that', 'the', 'random', 'walk', 'on', 'the', 'wreath', 'product', 'escapes', 'to', 'infinity', 'with', 'respect', 'to', 'a', 'suitable', 'pseudometric', 'faster', 'than', 'its', 'projection', 'onto', 'g', 'we', 'also', 'address', 'the', 'case', 'where', 'the', 'pseudometric', 'is', 'the', 'length', 'of', 'a', 'shortest', 'travelling', 'salesman', 'tour', 'in', 'this', 'context', 'and', 'excluding', 'some', 'degenerate', 'cases', 'if', 'gmathbbz', 'the', 'linear', 'rate', 'of', 'escape', 'is', 'strictly', 'bigger', 'than', 'the', 'rate', 'of', 'escape', 'of', 'the', 'lamplighter', 'random', 'walks', 'projection', 'on', 'g']] | [-0.1572564748831366, 0.19474767881165905, -0.07688182737011977, 0.022451748081475376, -0.10006821362634863, -0.13133984516427769, 0.048442185563470685, 0.43655728441246644, -0.32467702905291584, -0.15522277381174585, 0.1409522327850005, -0.3055061985685573, -0.11096797383019352, 0.19336746780701528, -0.10094031744931893, -0.0034106589855656512, 0.091240602634408, 0.16177713761969312, -0.029222486351381957, -0.2935036802891551, 0.284276387790536, 0.001271588742975297, 0.2030417026338599, 0.004416426160558301, 0.10078961076830112, 0.031457755167124325, -0.002642015468450339, 0.0074854832289382445, -0.1399353278344885, 0.02811345972529635, 0.13982034295918497, 0.08776016587512643, 0.28733826427137465, -0.3643311130988404, -0.18677237442868755, 0.22431419679243875, 0.15163759836109308, 0.021360043436288834, -0.023678164131280672, -0.3180679831392609, 0.1042609126647798, -0.14660994805456176, -0.09857914609667974, 0.044086171866856455, 0.11881231981503769, 0.019380180066739156, -0.25335756311196894, 0.009010044802727966, 0.09587799177724655, 0.014650156320171142, 0.034649453884959824, -0.0997704418633527, -0.0218805631876325, 0.08495342522874717, 0.007092169235645968, 0.07714813416331583, 0.13712716076477635, -0.039201503658356764, -0.1478922669245763, 0.4395641484941409, -0.11061929127440893, -0.21061329424714412, 0.17383854246009292, -0.2062809669177949, -0.1572763758647157, 0.14246838213497304, 0.16514356557007243, 0.1909639600028352, -0.044840900217962824, 0.12803553979005286, -0.1406094530044593, 0.057432415005485946, 0.07357264723159312, -0.032680394156358955, 0.1187774511811331, 0.13391962511525526, 0.1969901157488168, 0.17287816582304402, -0.004032687198870429, -0.045733257090839426, -0.30292819877064264, -0.14927381861243186, -0.24261724028918075, 0.17025776407719265, -0.16718971535785415, -0.2076695963316332, 0.3909167483812425, 0.1224685476570413, 0.19194901183368715, 0.15246157585151068, 0.22429167986961035, 0.12918262605032907, 0.020205020287445162, 0.1294755502802706, 0.07546442857024457, 0.188263150610643, -0.06899077023144781, -0.1815074199008021, 0.08296966922234714, 0.17940674584389218] |
708.3768 | Scenario of inflationary cosmology from the phenomenological $\Lambda$
models | Choosing the three phenomenological models of the dynamical cosmological term
$\Lambda$, viz., $\Lambda \sim (\dot a/a)^2$, $\Lambda \sim {\ddot a/a}$ and
$\Lambda \sim \rho$ where $a$ is the cosmic scale factor, it has been shown by
the method of numerical analysis that the three models are equivalent for the
flat Universe $k=0$. The evolution plots for dynamical cosmological term
$\Lambda$ vs. time $t$ and also the cosmic scale factor $a$ vs. $t$ are drawn
here for $k=0, +1$. A qualitative analysis has been made from the plots which
supports the idea of inflation and hence expanding Universe.
| gr-qc | choosing the three phenomenological models of the dynamical cosmological term lambda viz lambda sim dot aa2 lambda sim ddot aa and lambda sim rho where a is the cosmic scale factor it has been shown by the method of numerical analysis that the three models are equivalent for the flat universe k0 the evolution plots for dynamical cosmological term lambda vs time t and also the cosmic scale factor a vs t are drawn here for k0 1 a qualitative analysis has been made from the plots which supports the idea of inflation and hence expanding universe | [['choosing', 'the', 'three', 'phenomenological', 'models', 'of', 'the', 'dynamical', 'cosmological', 'term', 'lambda', 'viz', 'lambda', 'sim', 'dot', 'aa2', 'lambda', 'sim', 'ddot', 'aa', 'and', 'lambda', 'sim', 'rho', 'where', 'a', 'is', 'the', 'cosmic', 'scale', 'factor', 'it', 'has', 'been', 'shown', 'by', 'the', 'method', 'of', 'numerical', 'analysis', 'that', 'the', 'three', 'models', 'are', 'equivalent', 'for', 'the', 'flat', 'universe', 'k0', 'the', 'evolution', 'plots', 'for', 'dynamical', 'cosmological', 'term', 'lambda', 'vs', 'time', 't', 'and', 'also', 'the', 'cosmic', 'scale', 'factor', 'a', 'vs', 't', 'are', 'drawn', 'here', 'for', 'k0', '1', 'a', 'qualitative', 'analysis', 'has', 'been', 'made', 'from', 'the', 'plots', 'which', 'supports', 'the', 'idea', 'of', 'inflation', 'and', 'hence', 'expanding', 'universe']] | [-0.11908648721753745, 0.1441517011790546, -0.11531880421602388, 0.08424119469493666, -0.029393370152863953, -0.1640141831888558, -0.028612164108409097, 0.339064617199612, -0.23914853153155022, -0.29186979893321346, 0.06334301587386229, -0.3136904809009476, -0.03388785342589866, 0.16611155732198782, 0.10088126479945693, 0.022733614789610057, -0.005007414329681814, 0.0428529791533947, -0.039829833502641195, -0.2175321744073221, 0.32711259929520875, 0.07195123081508371, 0.18778391925560445, 0.013477640048859967, 0.0964707461129946, -0.11394394885691017, -0.0741710975074891, 0.05005917911292966, -0.2519128473752962, -0.00977316043836535, 0.15959225967983995, 0.12274901509961862, 0.255356508892836, -0.3027960707615946, -0.23116679060436093, 0.11836674002949725, 0.185398644899719, 0.04909551303102227, 0.008369182217290107, -0.2569937660147618, 0.1120272608109049, -0.14814800253502794, -0.09385145598177597, -0.025725588164071448, 0.12037432151341772, -0.03860030566899048, -0.2849143641933645, 0.1389794941273273, 0.018805303319822997, 0.032668536432932334, -0.053405314083985224, -0.13618938453956364, -0.006672329485378007, 0.0477517347773249, 0.08874275658961348, 0.10268433937879722, 0.11142371654433687, -0.12779786002812618, -0.04495367437082621, 0.4096154251049474, -0.12978426922717584, -0.1309887897031209, 0.1072528475425062, -0.15464756860080914, -0.1411774783184003, 0.09106805011841286, 0.05753726567881009, 0.091811376210955, -0.11177142116615606, 0.19992607275861768, 0.009276487738537342, 0.2202996326245598, 0.08604748452024669, 0.003529971566281675, 0.2347592562821108, 0.18800932791122457, -0.034435033116528055, 0.024579893307971584, -0.08636912888818488, -0.09066277811514963, -0.33918598637983355, -0.11087297427362387, -0.11477313884869986, 0.09645254514180124, -0.19700454374173412, -0.13289172646497166, 0.34242748843563586, 0.06531897750347085, 0.23545097409910762, 0.045708550899961634, 0.21843477427364164, 0.10340137285247598, 0.03370928965969799, 0.06144906296250746, 0.22912438477859975, 0.11912168760678356, 0.11800168268382549, -0.235572653018495, 0.009875018192820021, 0.0072613422250010305] |
708.3769 | Ultraviolet light emission from Si in a scanning tunneling microscope | Ultraviolet and visible radiation is observed from the contacts of a scanning
tunneling microscope with Si(100) and (111) wafers. This luminescence relies on
the presence of hot electrons in silicon, which are supplied, at positive bias
on n- and p-type samples, through the injection from the tip, or, at negative
bias on p-samples, by Zener tunneling. Measured spectra reveal a contribution
of direct optical transitions in Si bulk. The necessary holes well below the
valence band edge are injected from the tip or generated by Auger processes.
| cond-mat.mtrl-sci | ultraviolet and visible radiation is observed from the contacts of a scanning tunneling microscope with si100 and 111 wafers this luminescence relies on the presence of hot electrons in silicon which are supplied at positive bias on n and ptype samples through the injection from the tip or at negative bias on psamples by zener tunneling measured spectra reveal a contribution of direct optical transitions in si bulk the necessary holes well below the valence band edge are injected from the tip or generated by auger processes | [['ultraviolet', 'and', 'visible', 'radiation', 'is', 'observed', 'from', 'the', 'contacts', 'of', 'a', 'scanning', 'tunneling', 'microscope', 'with', 'si100', 'and', '111', 'wafers', 'this', 'luminescence', 'relies', 'on', 'the', 'presence', 'of', 'hot', 'electrons', 'in', 'silicon', 'which', 'are', 'supplied', 'at', 'positive', 'bias', 'on', 'n', 'and', 'ptype', 'samples', 'through', 'the', 'injection', 'from', 'the', 'tip', 'or', 'at', 'negative', 'bias', 'on', 'psamples', 'by', 'zener', 'tunneling', 'measured', 'spectra', 'reveal', 'a', 'contribution', 'of', 'direct', 'optical', 'transitions', 'in', 'si', 'bulk', 'the', 'necessary', 'holes', 'well', 'below', 'the', 'valence', 'band', 'edge', 'are', 'injected', 'from', 'the', 'tip', 'or', 'generated', 'by', 'auger', 'processes']] | [-0.06541369417898876, 0.19101875736161547, -0.022278034315054672, 0.008280561998659787, 0.025497691792457602, -0.17301280390427903, 0.11482921979920722, 0.4190927913715673, -0.23957084951012633, -0.369304274577041, 0.001980786441911965, -0.40887642608479013, -0.05306163181139286, 0.20540174228399125, 0.02641362566663342, -0.0403950335457921, 0.011645718428934382, -0.10173699567040298, -0.01835747748656675, -0.1675707355081909, 0.31762443677803803, 0.08973875463951032, 0.3184896055392401, 0.11385053600357889, 0.05370274888958002, 0.03604584617464435, 0.017238961922567943, 0.004849387397773044, -0.11887360662445264, 0.0379976815287549, 0.19304100396571855, -0.09783519116273626, 0.18368272245915737, -0.496765520726872, -0.1937774434025118, -0.03240476377568273, 0.12480515374282244, 0.09916731422674994, -0.12220011110996915, -0.30204884861704223, 0.03682074536634392, -0.037235331074551264, -0.04445756213241365, 0.05103587111739745, -0.054165984524568264, -0.003586607998735163, -0.23518546867769125, 0.11067909122238932, -0.002681672160221307, 0.06462656443418804, -0.058962323415894496, -0.1031209846178806, -0.13625068689945566, 0.06778512166834674, 0.013181089041862897, -0.011231418708501773, 0.26706497384225786, -0.06175933024293721, -0.10872915994679165, 0.303384592366773, -0.08573281105477797, -0.03451010434506569, 0.18440922715181354, -0.25271697790730135, 0.030898569752787087, 0.23568473058904327, 0.08347938244425973, 0.1371107813387806, -0.13184887719838773, 0.08314541161810264, 0.06262852026279582, 0.14225492750153726, 0.11835229944242814, 0.06405423163452598, 0.30251484560823544, 0.16376028468610374, 0.02508330758834301, 0.08618675235815909, -0.184147686895178, 0.06647777762588893, -0.2634455135990974, -0.1441668193938947, -0.2518204998138339, 0.1341133061471547, -0.022622436049988568, -0.17588666730105532, 0.3728407078779974, 0.07498521077295028, 0.2115047923749486, -0.0589041045967078, 0.3385701586818001, 0.08454990873024355, 0.09017808691782574, 0.0067042639522358425, 0.27175385841753247, 0.13846751696397658, 0.11669880783098728, -0.2729823072197262, 0.09605920743359643, -0.03734314075649478] |
708.377 | Squark and gaugino hadroproduction and decays in non-minimal flavour
violating supersymmetry | We implement non-minimal flavour violation (NMFV) in the MSSM at low scale.
In this framework, we propose benchmark points for the mSUGRA scenario
including non-minimal flavour violation by evaluating a number of experimental
low-energy, electroweak precision and cosmological constraints. We finally
discuss phenomenological aspects of our NMFV scenario and present a numerical
analysis of squark and gaugino production cross sections at the LHC.
| hep-ph | we implement nonminimal flavour violation nmfv in the mssm at low scale in this framework we propose benchmark points for the msugra scenario including nonminimal flavour violation by evaluating a number of experimental lowenergy electroweak precision and cosmological constraints we finally discuss phenomenological aspects of our nmfv scenario and present a numerical analysis of squark and gaugino production cross sections at the lhc | [['we', 'implement', 'nonminimal', 'flavour', 'violation', 'nmfv', 'in', 'the', 'mssm', 'at', 'low', 'scale', 'in', 'this', 'framework', 'we', 'propose', 'benchmark', 'points', 'for', 'the', 'msugra', 'scenario', 'including', 'nonminimal', 'flavour', 'violation', 'by', 'evaluating', 'a', 'number', 'of', 'experimental', 'lowenergy', 'electroweak', 'precision', 'and', 'cosmological', 'constraints', 'we', 'finally', 'discuss', 'phenomenological', 'aspects', 'of', 'our', 'nmfv', 'scenario', 'and', 'present', 'a', 'numerical', 'analysis', 'of', 'squark', 'and', 'gaugino', 'production', 'cross', 'sections', 'at', 'the', 'lhc']] | [-0.14086066345713796, 0.18197604533403167, -0.00508954963232908, 0.18252288528518484, -0.08802942912064729, -0.20156658649636758, 0.08327982809379815, 0.28321502458245035, -0.14752399185228915, -0.3297106499177596, 0.011399856816592908, -0.254260138719387, -0.03067444905727392, 0.12945110523807152, 0.03907697932750341, 0.13667519987812118, 0.062070039056596304, -0.07097164007081162, -0.08586509122202794, -0.2591467998969916, 0.32165073281863615, 0.05980931113784512, 0.19112094442197491, 0.18732477059321745, 0.048991301547854194, -0.05386064014589739, -0.05809030116310284, -0.08057406166243175, -0.17439886594619897, 0.07956385776577961, 0.23212880629395682, 0.14920225068335496, 0.0703956565213582, -0.36296866621289936, -0.1574457790924325, 0.18093396937622439, 0.10479761024434416, 0.13392491531114847, -0.10712024000369841, -0.3224512507754659, 0.07419323193885032, -0.26781113640893073, -0.08362616228294514, -0.1391622024839596, -0.09700030720393572, -0.18580092968685286, -0.3613776618999148, 0.10637717181447125, -0.1524302700224022, 0.05569222458963475, 0.05107541999868339, -0.14594322648121133, -0.02089575581651713, -0.07604118990194467, 0.20734650434534405, -0.06224493913736845, 0.18186700124559657, -0.19874794653705544, -0.21223985557518307, 0.4497719237965251, -0.08672075680667712, -0.176169366073159, 0.1405441984903836, -0.15388775542230596, -0.26929155090040274, 0.011486057192087173, 0.2613968753832437, 0.0891746588805247, -0.14982345139992143, 0.2608739174842384, -0.03674551171975003, 0.13410808237284302, 0.05947498364433173, 0.06501129727869753, 0.2649187114651477, 0.30272135561302543, 0.01905932244179504, 0.03608046909646383, -0.07863369267729539, -0.08743488302247392, -0.5818639372785886, -0.07996906087334667, -0.014557218925643062, -0.0011646821263379284, -0.14630141600690197, -0.043610209155650365, 0.4117840412146752, 0.19434591396046536, 0.25683436868712306, 0.08282329913760934, 0.3364966657485754, 0.015296973548607812, 0.02664837734921584, 0.010822407989984467, 0.3397087670773977, 0.05628312815586844, 0.15244069980782649, -0.2679792367927139, -0.03604282501582352, 0.09882526555133703] |
708.3771 | Atomic structure analysis of nanocrystalline Boehmite AlO(OH) | Nanocrystalline n-AlO(OH) (Disperal P2(R) of Sasol) was investigated by means
of the atomic pair distribution function (PDF). The PDF is derived from powder
diffraction data, an ideally resolved PDF is obtained from a synchrotron source
which provides a large maximal scattering vector length Qmax > 300 nm-1. Here,
however, we were able to reveal atomic structure details of the about 4 nm
particles from in-house diffraction data (Qmax = 130 nm-1): PDF least squares
model refinements show that n-AlO(OH) is of the layered Boehmite structure type
(oC16, Cmcm). But the structure is uniformly distorted in domains of ca. 2 nm
size within the nano particles. The hydrogen bonds between the layers are
widened up significantly by +13 pm, accounting for the higher reactivity when
compared to microcrystalline Boehmite. Our results from only one
"nanocrystallographic" experiment are consistent with a trend which was found
via the Rietveld technique on a series of AlO(OH) of different crystallite size
(Bokhimi et al., 2001). In addition, the PDF contains information on structural
distortion as a function of (coherence) domain size within the nano particles.
| cond-mat.mtrl-sci | nanocrystalline nalooh disperal p2r of sasol was investigated by means of the atomic pair distribution function pdf the pdf is derived from powder diffraction data an ideally resolved pdf is obtained from a synchrotron source which provides a large maximal scattering vector length qmax 300 nm1 here however we were able to reveal atomic structure details of the about 4 nm particles from inhouse diffraction data qmax 130 nm1 pdf least squares model refinements show that nalooh is of the layered boehmite structure type oc16 cmcm but the structure is uniformly distorted in domains of ca 2 nm size within the nano particles the hydrogen bonds between the layers are widened up significantly by 13 pm accounting for the higher reactivity when compared to microcrystalline boehmite our results from only one nanocrystallographic experiment are consistent with a trend which was found via the rietveld technique on a series of alooh of different crystallite size bokhimi et al 2001 in addition the pdf contains information on structural distortion as a function of coherence domain size within the nano particles | [['nanocrystalline', 'nalooh', 'disperal', 'p2r', 'of', 'sasol', 'was', 'investigated', 'by', 'means', 'of', 'the', 'atomic', 'pair', 'distribution', 'function', 'pdf', 'the', 'pdf', 'is', 'derived', 'from', 'powder', 'diffraction', 'data', 'an', 'ideally', 'resolved', 'pdf', 'is', 'obtained', 'from', 'a', 'synchrotron', 'source', 'which', 'provides', 'a', 'large', 'maximal', 'scattering', 'vector', 'length', 'qmax', '300', 'nm1', 'here', 'however', 'we', 'were', 'able', 'to', 'reveal', 'atomic', 'structure', 'details', 'of', 'the', 'about', '4', 'nm', 'particles', 'from', 'inhouse', 'diffraction', 'data', 'qmax', '130', 'nm1', 'pdf', 'least', 'squares', 'model', 'refinements', 'show', 'that', 'nalooh', 'is', 'of', 'the', 'layered', 'boehmite', 'structure', 'type', 'oc16', 'cmcm', 'but', 'the', 'structure', 'is', 'uniformly', 'distorted', 'in', 'domains', 'of', 'ca', '2', 'nm', 'size', 'within', 'the', 'nano', 'particles', 'the', 'hydrogen', 'bonds', 'between', 'the', 'layers', 'are', 'widened', 'up', 'significantly', 'by', '13', 'pm', 'accounting', 'for', 'the', 'higher', 'reactivity', 'when', 'compared', 'to', 'microcrystalline', 'boehmite', 'our', 'results', 'from', 'only', 'one', 'nanocrystallographic', 'experiment', 'are', 'consistent', 'with', 'a', 'trend', 'which', 'was', 'found', 'via', 'the', 'rietveld', 'technique', 'on', 'a', 'series', 'of', 'alooh', 'of', 'different', 'crystallite', 'size', 'bokhimi', 'et', 'al', '2001', 'in', 'addition', 'the', 'pdf', 'contains', 'information', 'on', 'structural', 'distortion', 'as', 'a', 'function', 'of', 'coherence', 'domain', 'size', 'within', 'the', 'nano', 'particles']] | [-0.051084846651572785, 0.15846308151459346, -0.0731071794059041, 0.02600270448263388, -0.009949685194865302, -0.08522342854595018, 0.053168406558417994, 0.4093040715209966, -0.27274928251173086, -0.3289342272274066, 0.0660065760427198, -0.34186391380268993, -0.053281192188584355, 0.16949028321332027, 0.0158305634652416, 0.05037306370430215, 0.019721219354704413, -0.03358203583250775, -0.059669283511073784, -0.22116826233117493, 0.2690614639242656, 0.08571787482008425, 0.3061900707902549, 0.04391652431885907, 0.06033527146419781, 0.019037174060940742, -0.007536009322245454, 0.020833648188949325, -0.1554780765425168, 0.08591499719308517, 0.19888000257129154, 0.05458812371199561, 0.17565105892690766, -0.38633126510458804, -0.20875792551330877, -0.03151646127577785, 0.1307367672873011, 0.0783979158962232, -0.04149488252479323, -0.2551110944328938, 0.10548939816870315, -0.1172166692883556, -0.12522452536883744, -0.019501669010212427, 0.01743147260953434, 0.037797193179458614, -0.26217435925439553, 0.11017707492316921, 0.034226145756398436, 0.11149593481528682, -0.06688194375533914, -0.16962047082610254, -0.05292531608490187, 0.0444251538437404, -0.01676658727973158, 0.06745922358349225, 0.14111170420953786, -0.07030393051231947, -0.07209474117248753, 0.38447376194431687, -0.034901124177511435, -0.1042504454773396, 0.13110514041334173, -0.18402913447569644, -0.07987556788666975, 0.2230145686636354, 0.10978177289795239, 0.10572738628996926, -0.1575213891812255, 0.06722785215175082, -0.06273293354396903, 0.2910751895004407, 0.12684541299321883, -0.003612759801272173, 0.1503745978752281, 0.1895355976424938, 0.0023875811169747005, 0.14710906332664647, -0.1508472360749079, -0.04232265337182176, -0.2433624413882404, -0.12797916483209837, -0.20988275858486982, 0.058174672961603245, -0.13171625011099697, -0.12883131737222822, 0.3280053178584853, 0.08876773005968697, 0.21258374999093196, 0.0035628171036626364, 0.23510210167787168, 0.04278051291137587, 0.11053254380605596, 0.05579819649100563, 0.1954847339792502, 0.1527871683187144, 0.09701499395440658, -0.17690270206468656, 0.10759729039205541, 0.0028446063475120204] |
708.3772 | Discretely Holomorphic Parafermions in Lattice Z(N) Models | We construct lattice parafermions - local products of order and disorder
operators - in nearest-neighbor Z(N) models on regular isotropic planar
lattices, and show that they are discretely holomorphic, that is they satisfy
discrete Cauchy-Riemann equations, precisely at the critical
Fateev-Zamolodchikov (FZ) integrable points. We generalize our analysis to
models with anisotropic interactions, showing that, as long as the lattice is
correctly embedded in the plane, such discretely holomorphic parafermions exist
for particular values of the couplings which we identify as the anisotropic FZ
points. These results extend to more general inhomogeneous lattice models as
long as the covering lattice admits a rhombic embedding in the plane.
| math-ph cond-mat.stat-mech hep-th math.MP | we construct lattice parafermions local products of order and disorder operators in nearestneighbor zn models on regular isotropic planar lattices and show that they are discretely holomorphic that is they satisfy discrete cauchyriemann equations precisely at the critical fateevzamolodchikov fz integrable points we generalize our analysis to models with anisotropic interactions showing that as long as the lattice is correctly embedded in the plane such discretely holomorphic parafermions exist for particular values of the couplings which we identify as the anisotropic fz points these results extend to more general inhomogeneous lattice models as long as the covering lattice admits a rhombic embedding in the plane | [['we', 'construct', 'lattice', 'parafermions', 'local', 'products', 'of', 'order', 'and', 'disorder', 'operators', 'in', 'nearestneighbor', 'zn', 'models', 'on', 'regular', 'isotropic', 'planar', 'lattices', 'and', 'show', 'that', 'they', 'are', 'discretely', 'holomorphic', 'that', 'is', 'they', 'satisfy', 'discrete', 'cauchyriemann', 'equations', 'precisely', 'at', 'the', 'critical', 'fateevzamolodchikov', 'fz', 'integrable', 'points', 'we', 'generalize', 'our', 'analysis', 'to', 'models', 'with', 'anisotropic', 'interactions', 'showing', 'that', 'as', 'long', 'as', 'the', 'lattice', 'is', 'correctly', 'embedded', 'in', 'the', 'plane', 'such', 'discretely', 'holomorphic', 'parafermions', 'exist', 'for', 'particular', 'values', 'of', 'the', 'couplings', 'which', 'we', 'identify', 'as', 'the', 'anisotropic', 'fz', 'points', 'these', 'results', 'extend', 'to', 'more', 'general', 'inhomogeneous', 'lattice', 'models', 'as', 'long', 'as', 'the', 'covering', 'lattice', 'admits', 'a', 'rhombic', 'embedding', 'in', 'the', 'plane']] | [-0.14812071130367085, 0.15439446073114163, -0.012473116507421115, 0.10097893891811725, -0.08465992117167584, -0.13859410470883762, -0.018378786254851592, 0.4200079618110543, -0.27291488205747944, -0.16695464938169435, 0.11702474683545352, -0.30980028630722134, -0.17037025388507615, 0.16095388155164464, 0.021072161423840694, 0.03881986276814825, 0.00019936197925181617, 0.018078703317968618, -0.10253172870725394, -0.3084320285667976, 0.3318459372612692, -0.04217922527875219, 0.22948161252729948, 0.008970645085598031, 0.06701149619849665, 0.02975938348986563, 0.06424497794803409, 0.020317168360842127, -0.1918884593005974, 0.07280559601439607, 0.2753126130086977, -0.04231842401038323, 0.14179361508937463, -0.4161859884148552, -0.2305782974032419, 0.16382121732014984, 0.16470581093536957, 0.1013953805956546, 0.006787278519117362, -0.24948453961738518, 0.06070580674956242, -0.10144257880747318, -0.1916501344802479, -0.14909109452828057, 0.01735443723875852, 0.07972318192145654, -0.2777314229380517, 0.07037489850827981, 0.127555245755329, 0.07670535755654176, -0.08625514277567466, -0.08975326717675974, -0.09449618414177426, 0.0867708508501805, -0.013059588794463447, 0.06918607908522799, 0.05499462240508624, -0.08407693805971315, -0.12681662465135257, 0.39319101013243196, -0.07576662717675346, -0.25818326024649046, 0.16653045516993317, -0.14808920719660817, -0.1703039691606093, 0.08812435961195401, 0.1546080090571195, 0.09283933898300997, -0.09073436352468672, 0.1750888767685475, -0.1112088892165394, 0.11042824282443948, 0.06621116428591665, 0.008266309651524006, 0.21348224883189515, 0.08935162656873996, 0.08651164280516761, 0.13158555063862531, 0.0039010695813755905, -0.13566560476486172, -0.33009293538828693, -0.1343269291378203, -0.16758687194170696, 0.10384773466669556, -0.14215261334791734, -0.2512565283282172, 0.3602429525394525, 0.13758273127355747, 0.22379681005896557, 0.05692062966991216, 0.15461570125605378, 0.11914489646220491, 0.10406023440439077, 0.05138371833600104, 0.15614707066588812, 0.129454179001706, 0.035508763954220784, -0.13203159535603065, -0.044151942766759364, 0.12896366139785165] |
708.3773 | Exact density matrix of the Gutzwiller wave function: II. Minority spin
component | The density matrix, i.e. the Fourier transform of the momentum distribution,
is obtained analytically for all magnetization of the Gutzwiller wave function
in one dimension with exclusion of double occupancy per site. The present
result complements the previous analytic derivation of the density matrix for
the majority spin. The derivation makes use of a determinantal form of the
squared wave function, and multiple integrals over particle coordinates are
performed with the help of a diagrammatic representation. In the thermodynamic
limit, the density matrix at distance x is completely characterized by
quantities v_c x and v_s x, where v_s and v_c are spin and charge velocities in
the supersymmetric t-J model for which the Gutzwiller wave function gives the
exact ground state. The present result then gives the exact density matrix of
the t-J model for all densities and all magnetization at zero temperature.
Discontinuity, slope, and curvature singularities in the momentum distribution
are identified. The momentum distribution obtained by numerical Fourier
transform is in excellent agreement with existing result.
| cond-mat.str-el cond-mat.stat-mech | the density matrix ie the fourier transform of the momentum distribution is obtained analytically for all magnetization of the gutzwiller wave function in one dimension with exclusion of double occupancy per site the present result complements the previous analytic derivation of the density matrix for the majority spin the derivation makes use of a determinantal form of the squared wave function and multiple integrals over particle coordinates are performed with the help of a diagrammatic representation in the thermodynamic limit the density matrix at distance x is completely characterized by quantities v_c x and v_s x where v_s and v_c are spin and charge velocities in the supersymmetric tj model for which the gutzwiller wave function gives the exact ground state the present result then gives the exact density matrix of the tj model for all densities and all magnetization at zero temperature discontinuity slope and curvature singularities in the momentum distribution are identified the momentum distribution obtained by numerical fourier transform is in excellent agreement with existing result | [['the', 'density', 'matrix', 'ie', 'the', 'fourier', 'transform', 'of', 'the', 'momentum', 'distribution', 'is', 'obtained', 'analytically', 'for', 'all', 'magnetization', 'of', 'the', 'gutzwiller', 'wave', 'function', 'in', 'one', 'dimension', 'with', 'exclusion', 'of', 'double', 'occupancy', 'per', 'site', 'the', 'present', 'result', 'complements', 'the', 'previous', 'analytic', 'derivation', 'of', 'the', 'density', 'matrix', 'for', 'the', 'majority', 'spin', 'the', 'derivation', 'makes', 'use', 'of', 'a', 'determinantal', 'form', 'of', 'the', 'squared', 'wave', 'function', 'and', 'multiple', 'integrals', 'over', 'particle', 'coordinates', 'are', 'performed', 'with', 'the', 'help', 'of', 'a', 'diagrammatic', 'representation', 'in', 'the', 'thermodynamic', 'limit', 'the', 'density', 'matrix', 'at', 'distance', 'x', 'is', 'completely', 'characterized', 'by', 'quantities', 'v_c', 'x', 'and', 'v_s', 'x', 'where', 'v_s', 'and', 'v_c', 'are', 'spin', 'and', 'charge', 'velocities', 'in', 'the', 'supersymmetric', 'tj', 'model', 'for', 'which', 'the', 'gutzwiller', 'wave', 'function', 'gives', 'the', 'exact', 'ground', 'state', 'the', 'present', 'result', 'then', 'gives', 'the', 'exact', 'density', 'matrix', 'of', 'the', 'tj', 'model', 'for', 'all', 'densities', 'and', 'all', 'magnetization', 'at', 'zero', 'temperature', 'discontinuity', 'slope', 'and', 'curvature', 'singularities', 'in', 'the', 'momentum', 'distribution', 'are', 'identified', 'the', 'momentum', 'distribution', 'obtained', 'by', 'numerical', 'fourier', 'transform', 'is', 'in', 'excellent', 'agreement', 'with', 'existing', 'result']] | [-0.13836345379034157, 0.13690365002264637, -0.07880060439764043, 0.05943543115043847, -0.012545380660073732, -0.07803812706236832, 0.040544403138289435, 0.33983193384759, -0.2376484026878896, -0.23638272518016532, 0.037431715492340985, -0.3138732865759993, -0.07969271377465735, 0.15776398859590227, 0.07506262040738369, 0.07068911999100323, 0.01154634116779594, 0.05766694818639896, -0.15307805148234382, -0.1897306105386488, 0.3035995702317106, 0.021899455399169813, 0.26856061635461786, 0.041968467909864776, 0.10677789661140573, 0.07917662322818791, 0.0010862105564605556, -0.011490557480537327, -0.15277430837830672, 0.05886881265061847, 0.22800675085153344, 0.051980210805708575, 0.17766006761258082, -0.39063515754405564, -0.20673384957880708, 0.04957485637908592, 0.1502083308537375, 0.08161958110223927, -0.012336198535345538, -0.2614153747959338, 0.023132014350094914, -0.18733124637193757, -0.2053974188103743, -0.07970581696638783, 0.02737239517337648, 0.0545364808299463, -0.28169181475074156, 0.18740075777047838, 0.009429837451674618, 0.02405681780721309, -0.057266855296904784, -0.1809748912398213, -0.06258912410961806, 0.06033348222194273, 0.04523867405695719, 0.08363548524336085, 0.11396357115942257, -0.12031512881888176, -0.039310423795067696, 0.31822046282916117, -0.0610614289486913, -0.23302271495264618, 0.12009507561785847, -0.22591126418655968, -0.06674679146787516, 0.17527097742453482, 0.06537419892937088, 0.1007236232209576, -0.12476550097737087, 0.14251465557112783, -0.04433913321412353, 0.11466727908921136, 0.06072054954642463, 0.034281037579393554, 0.1971609396639572, 0.09531685875001303, 0.07464810668562467, 0.09443165130979388, -0.12696575695240991, -0.12358458398582314, -0.32992509998051867, -0.17842728656870946, -0.2593794532510116, 0.062271782484393946, -0.11907847428962329, -0.16706527775076366, 0.4019653909831424, 0.12674143088474518, 0.23185093624285869, 0.09947035932905156, 0.26610456688120165, 0.19338039537483948, 0.018373968047999154, 0.0748758304515611, 0.17600705170006486, 0.19676708680654728, 0.07534142284614127, -0.23920116901877142, 0.032033209621454395, 0.1359630504639588] |
708.3774 | Fisher Lecture: Dimension Reduction in Regression | Beginning with a discussion of R. A. Fisher's early written remarks that
relate to dimension reduction, this article revisits principal components as a
reductive method in regression, develops several model-based extensions and
ends with descriptions of general approaches to model-based and model-free
dimension reduction in regression. It is argued that the role for principal
components and related methodology may be broader than previously seen and that
the common practice of conditioning on observed values of the predictors may
unnecessarily limit the choice of regression methodology.
| stat.ME | beginning with a discussion of r a fishers early written remarks that relate to dimension reduction this article revisits principal components as a reductive method in regression develops several modelbased extensions and ends with descriptions of general approaches to modelbased and modelfree dimension reduction in regression it is argued that the role for principal components and related methodology may be broader than previously seen and that the common practice of conditioning on observed values of the predictors may unnecessarily limit the choice of regression methodology | [['beginning', 'with', 'a', 'discussion', 'of', 'r', 'a', 'fishers', 'early', 'written', 'remarks', 'that', 'relate', 'to', 'dimension', 'reduction', 'this', 'article', 'revisits', 'principal', 'components', 'as', 'a', 'reductive', 'method', 'in', 'regression', 'develops', 'several', 'modelbased', 'extensions', 'and', 'ends', 'with', 'descriptions', 'of', 'general', 'approaches', 'to', 'modelbased', 'and', 'modelfree', 'dimension', 'reduction', 'in', 'regression', 'it', 'is', 'argued', 'that', 'the', 'role', 'for', 'principal', 'components', 'and', 'related', 'methodology', 'may', 'be', 'broader', 'than', 'previously', 'seen', 'and', 'that', 'the', 'common', 'practice', 'of', 'conditioning', 'on', 'observed', 'values', 'of', 'the', 'predictors', 'may', 'unnecessarily', 'limit', 'the', 'choice', 'of', 'regression', 'methodology']] | [-0.06694308702340897, 0.025793144983403824, -0.12562932995805406, 0.0742791382376762, -0.13374245045158792, -0.18475491111440695, 0.010897193369729554, 0.342032564313644, -0.23967100096976054, -0.23896330805385815, 0.1478914251414073, -0.24175897189142073, -0.18338662579874782, 0.21489794682711363, -0.13463823192150276, 0.01308707739928436, 0.05419451588874354, 0.03307076747364858, -0.07775552840629484, -0.28461727315888685, 0.29502463124911577, 0.059572789314038616, 0.2907795127481222, -0.0059045066563960386, 0.08041666837080437, 0.035728953088469365, -0.08993332539411152, 0.052981009753420946, -0.08914227584121845, 0.16569544258527458, 0.3605359575327705, 0.15678686478777842, 0.3531362499932156, -0.3621874925379148, -0.23407527130535422, 0.11230098267534391, 0.16118241825743634, 0.05988638393361779, 0.04825423881274593, -0.22962593555669575, 0.03131718134836239, -0.1726248346926535, -0.14815187964807539, -0.10252284090965987, 0.045225789593806597, -0.0500990122447119, -0.2642595260677969, 0.09138949617524357, 0.11419105406521875, 0.09932868132806, -0.023994454697651022, -0.188778522433987, 0.03544517210410798, 0.027278706960051375, 0.1394746953922817, 0.028372209798544646, 0.13409006009426186, -0.08942331922350123, -0.13748830777647741, 0.3418749889578013, -0.06270810545179034, -0.1944815688273486, 0.21576843881870017, -0.08942045815946424, -0.1837869038038394, 0.061392701198072996, 0.18111809278454852, 0.07114330795319641, -0.11428971483426935, 0.046325522083241276, -0.011217535905512598, 0.14502587285002363, 0.05209867886322386, -0.04082901148221401, 0.16755421162610326, 0.18074693965780383, 0.0472200323099969, 0.09450184411834925, -0.03645603008951773, -0.08066955488996909, -0.33311310264501065, -0.1549191843937425, -0.13028559695710154, 0.009180904798867072, -0.11826715009759509, -0.19277222474989042, 0.3881680816631107, 0.20640188719912925, 0.20913143655942643, 0.07252064637894577, 0.29159339150304303, 0.10176831894033753, 0.06717612600940115, 0.0630380982396138, 0.1816433763350634, 0.17415366044596714, 0.054374813072054703, -0.13963402193587493, 0.11547089891015168, 0.054866406650227656] |
708.3775 | Decoherence of encoded quantum registers | In order to eliminate disturbing effects of decoherence, encoding of quantum
information in decoherence-free subspaces has been suggested. We analyze the
benefits of this concept for a quantum register that is realized in a spin
chain in contact with a common bosonic bath. Within a dissipation-less model we
provide explicit analytical results for the average fidelity of plain and
encoded quantum registers. For the investigation of dissipative spin-boson
couplings we employ a master equation of Bloch-Redfield type.
| quant-ph | in order to eliminate disturbing effects of decoherence encoding of quantum information in decoherencefree subspaces has been suggested we analyze the benefits of this concept for a quantum register that is realized in a spin chain in contact with a common bosonic bath within a dissipationless model we provide explicit analytical results for the average fidelity of plain and encoded quantum registers for the investigation of dissipative spinboson couplings we employ a master equation of blochredfield type | [['in', 'order', 'to', 'eliminate', 'disturbing', 'effects', 'of', 'decoherence', 'encoding', 'of', 'quantum', 'information', 'in', 'decoherencefree', 'subspaces', 'has', 'been', 'suggested', 'we', 'analyze', 'the', 'benefits', 'of', 'this', 'concept', 'for', 'a', 'quantum', 'register', 'that', 'is', 'realized', 'in', 'a', 'spin', 'chain', 'in', 'contact', 'with', 'a', 'common', 'bosonic', 'bath', 'within', 'a', 'dissipationless', 'model', 'we', 'provide', 'explicit', 'analytical', 'results', 'for', 'the', 'average', 'fidelity', 'of', 'plain', 'and', 'encoded', 'quantum', 'registers', 'for', 'the', 'investigation', 'of', 'dissipative', 'spinboson', 'couplings', 'we', 'employ', 'a', 'master', 'equation', 'of', 'blochredfield', 'type']] | [-0.18089082856456956, 0.14669007286066552, -0.08422248277740625, 0.06305265155100784, -0.026749446407541053, -0.1968374375266011, 0.07038199137775349, 0.34300375187938864, -0.22565717120691167, -0.22631349054153088, 0.030142971719675636, -0.25833962688996615, -0.12212701773198394, 0.1997971857154089, -0.03735370876860212, 0.08339813384287931, 0.044731438193204145, 0.053532614986874866, -0.1111832745962885, -0.2234765673419098, 0.2684153988836454, 0.01645209013284849, 0.23643967782618938, 0.023838306523182175, 0.16843395169775982, 0.02458959123627706, 0.0341425555238089, -0.023457538560274747, -0.14456529833133372, 0.0859634363751665, 0.279587872568276, 0.0663269818488315, 0.26456932237526015, -0.46325872865106377, -0.2431671330705285, 0.07974081225965365, 0.15135616162646706, 0.2666655411798652, -0.04820914086946226, -0.30630834061991086, 0.010505178955371505, -0.23499419459129695, -0.13069116878746587, -0.12164393650494855, -0.009019766861645432, -0.04767028591897968, -0.24720083874069734, 0.09260676336752904, 0.09768683794740733, 0.05502216527601341, 0.0110307684283123, -0.03166749370707707, 0.038974263729503404, 0.12493272432860882, -0.07092057901295507, -0.016598201455100887, 0.13834150313315066, -0.1186300295241806, -0.18603720299464155, 0.33712494145933686, -0.09628288708355084, -0.24249696083270111, 0.12817762260530868, -0.06911660102498415, -0.1312657411836916, 0.07461389802493058, 0.14748470379680687, 0.048501285688056575, -0.19363827675024603, 0.12096820109109575, 0.002866937149189074, 0.1683802218841655, 0.017783741554390494, 0.1439828654666516, 0.18175023549248454, 0.1713744702978761, 0.018790481684656888, 0.2225514172800127, -0.04560269135377043, -0.1997714334397347, -0.29520894166130524, -0.2050143227906438, -0.217055796802818, 0.12092240595004776, -0.046163306613687075, -0.13911219845925057, 0.4081646761336884, 0.19259426227655513, 0.13139474825244155, 0.008309724897920312, 0.3094412924407364, 0.13292178618661188, 0.06412442607877704, 0.059042755375289684, 0.20298639270053667, 0.1709127663574242, 0.03839806895461175, -0.31079074832937353, 0.023850707724303394, 0.03830061057074503] |
708.3776 | Comment: Fisher Lecture: Dimension Reduction in Regression | Comment: Fisher Lecture: Dimension Reduction in Regression [arXiv:0708.3774]
| stat.ME | comment fisher lecture dimension reduction in regression arxiv07083774 | [['comment', 'fisher', 'lecture', 'dimension', 'reduction', 'in', 'regression', 'arxiv07083774']] | [-0.0180543374735862, 0.020581837045028806, -0.09514877054607496, 0.12449243548326194, -0.1400118555757217, -0.3189979321323335, -0.019820759305730462, 0.14219930957187898, -0.12936251517385244, -0.18627265794202685, 0.21493641687266063, -0.3917643390595913, -0.33059780672192574, 0.0719880061224103, -0.24760602274909616, 0.040015009231865406, 0.03084731660783291, -0.032166552264243364, -0.22976271249353886, -0.6434077750891447, 0.2956262957304716, 0.16159943462116644, 0.3792661689221859, 0.027576426975429058, 0.14232060685753822, 0.14893603511154652, -0.24118628073483706, -0.06333551183342934, -0.18558229971677065, 0.1303406215738505, 0.4067000376744545, 0.13936997801647522, 0.2659185966476798, -0.26957020768895745, -0.18711033277213573, 0.08664591517299414, 0.09332900959998369, 0.09618624649010599, 0.1106796876701992, -0.24981547612696886, -0.1513123963959515, -0.1553487959317863, -0.051633052120450884, -0.17340946663171053, 0.0791497944155708, -0.23739862456568517, -0.15126337483525276, 0.25220632599666715, 0.13740408443845809, 0.2985245855525136, 0.08476904896087945, -0.2855363441631198, 0.03217729908647016, -0.1982929277146468, 0.04089810233563185, 0.01804303633980453, 0.18369807908311486, -0.14406746649183333, -0.26645157238817774, 0.20660349348327145, -0.12788798598921858, -0.22200120519846678, 0.03646417800337076, -0.158714912366122, -0.2114026485942304, -0.00819386332295835, 0.3712666821666062, -0.09881621529348195, -0.08245156239718199, 0.17415070487186313, -0.01634677790571004, 0.18196941656060517, 0.18509339215233922, -0.03445936040952802, 0.021505440585315228, 0.14761600317433476, -0.05083468742668629, 0.05656493693822995, -0.10446373047307134, -0.04899694269988686, -0.3653655843809247, -0.22038593981415033, -0.2572723694611341, 0.0826254915446043, -0.21619897987693548, -0.13039340637624264, 0.1632906801532954, 0.27154487697407603, 0.21876292116940022, 0.036621952487621456, 0.167314357124269, 0.11386594024952501, -0.12331111263483763, 0.11081383656710386, 0.11486714601051062, 0.20716392807662487, 0.08538154978305101, -0.07387405983172357, -0.08104116027243435, 0.33343906968366355] |
708.3777 | Comment: Fisher Lecture: Dimension Reduction in Regression | Comment: Fisher Lecture: Dimension Reduction in Regression [arXiv:0708.3774]
| stat.ME | comment fisher lecture dimension reduction in regression arxiv07083774 | [['comment', 'fisher', 'lecture', 'dimension', 'reduction', 'in', 'regression', 'arxiv07083774']] | [-0.0180543374735862, 0.020581837045028806, -0.09514877054607496, 0.12449243548326194, -0.1400118555757217, -0.3189979321323335, -0.019820759305730462, 0.14219930957187898, -0.12936251517385244, -0.18627265794202685, 0.21493641687266063, -0.3917643390595913, -0.33059780672192574, 0.0719880061224103, -0.24760602274909616, 0.040015009231865406, 0.03084731660783291, -0.032166552264243364, -0.22976271249353886, -0.6434077750891447, 0.2956262957304716, 0.16159943462116644, 0.3792661689221859, 0.027576426975429058, 0.14232060685753822, 0.14893603511154652, -0.24118628073483706, -0.06333551183342934, -0.18558229971677065, 0.1303406215738505, 0.4067000376744545, 0.13936997801647522, 0.2659185966476798, -0.26957020768895745, -0.18711033277213573, 0.08664591517299414, 0.09332900959998369, 0.09618624649010599, 0.1106796876701992, -0.24981547612696886, -0.1513123963959515, -0.1553487959317863, -0.051633052120450884, -0.17340946663171053, 0.0791497944155708, -0.23739862456568517, -0.15126337483525276, 0.25220632599666715, 0.13740408443845809, 0.2985245855525136, 0.08476904896087945, -0.2855363441631198, 0.03217729908647016, -0.1982929277146468, 0.04089810233563185, 0.01804303633980453, 0.18369807908311486, -0.14406746649183333, -0.26645157238817774, 0.20660349348327145, -0.12788798598921858, -0.22200120519846678, 0.03646417800337076, -0.158714912366122, -0.2114026485942304, -0.00819386332295835, 0.3712666821666062, -0.09881621529348195, -0.08245156239718199, 0.17415070487186313, -0.01634677790571004, 0.18196941656060517, 0.18509339215233922, -0.03445936040952802, 0.021505440585315228, 0.14761600317433476, -0.05083468742668629, 0.05656493693822995, -0.10446373047307134, -0.04899694269988686, -0.3653655843809247, -0.22038593981415033, -0.2572723694611341, 0.0826254915446043, -0.21619897987693548, -0.13039340637624264, 0.1632906801532954, 0.27154487697407603, 0.21876292116940022, 0.036621952487621456, 0.167314357124269, 0.11386594024952501, -0.12331111263483763, 0.11081383656710386, 0.11486714601051062, 0.20716392807662487, 0.08538154978305101, -0.07387405983172357, -0.08104116027243435, 0.33343906968366355] |
708.3778 | Symplectic geometries on supermanifolds | Extension of symplectic geometry on manifolds to the supersymmetric case is
considered. In the even case it leads to the even symplectic geometry (or,
equivalently, to the geometry on supermanifolds endowed with a non-degenerate
Poisson bracket) or to the geometry on an even Fedosov supermanifolds. It is
proven that in the odd case there are two different scalar symplectic
structures (namely, an odd closed differential 2-form and the antibracket)
which can be used for construction of symplectic geometries on supermanifolds.
| hep-th | extension of symplectic geometry on manifolds to the supersymmetric case is considered in the even case it leads to the even symplectic geometry or equivalently to the geometry on supermanifolds endowed with a nondegenerate poisson bracket or to the geometry on an even fedosov supermanifolds it is proven that in the odd case there are two different scalar symplectic structures namely an odd closed differential 2form and the antibracket which can be used for construction of symplectic geometries on supermanifolds | [['extension', 'of', 'symplectic', 'geometry', 'on', 'manifolds', 'to', 'the', 'supersymmetric', 'case', 'is', 'considered', 'in', 'the', 'even', 'case', 'it', 'leads', 'to', 'the', 'even', 'symplectic', 'geometry', 'or', 'equivalently', 'to', 'the', 'geometry', 'on', 'supermanifolds', 'endowed', 'with', 'a', 'nondegenerate', 'poisson', 'bracket', 'or', 'to', 'the', 'geometry', 'on', 'an', 'even', 'fedosov', 'supermanifolds', 'it', 'is', 'proven', 'that', 'in', 'the', 'odd', 'case', 'there', 'are', 'two', 'different', 'scalar', 'symplectic', 'structures', 'namely', 'an', 'odd', 'closed', 'differential', '2form', 'and', 'the', 'antibracket', 'which', 'can', 'be', 'used', 'for', 'construction', 'of', 'symplectic', 'geometries', 'on', 'supermanifolds']] | [-0.1955765333492309, 0.07413428695035691, -0.0598704454721883, 0.1535618824796984, -0.11721108860801906, -0.19038132423884235, -0.11099199894088088, 0.3660753514850512, -0.2586387414019555, -0.24801337398821488, 0.09247160835657268, -0.208733607432805, -0.19928640741854906, 0.21107721512089483, -0.15396264934388454, -0.03839972616406158, 0.034149984862597196, 0.12324742663186043, -0.11802641688263975, -0.29133907770738005, 0.46509427288547156, 0.020215056044980882, 0.21783339837566018, 0.00914054920867784, 0.13099636487604585, 0.008337327087065204, 0.03913263583090156, 0.02429419517866336, -0.07595957877101682, 0.0856566017086152, 0.26423065466806295, -0.00970701627084054, 0.08350473374594003, -0.4530016869190149, -0.17213606497643924, 0.15620990690076725, 0.11587128310347908, 0.05435173561418196, 0.017959392795455643, -0.3024786683294224, 0.07270084542105906, -0.1151116605149582, -0.16588565221754834, -0.10036762815434486, 0.005888889091147575, -0.09100322374142707, -0.2179239418997895, -0.03812685930170119, 0.1317192729882663, 0.0819320609443821, -0.060294425959000364, -0.0855790804955177, -0.0772134909639135, 0.027647097309818493, -0.0009670860425103455, 0.046255810506409034, 0.09691218184889294, -0.07165652512339875, -0.12982978515938157, 0.3926732093794271, -0.05907657160423696, -0.4346013014670461, 0.13632615323876962, -0.12387400098377839, -0.1630140989262145, 0.12259522344684229, 0.09587870964314789, 0.16691694215405734, -0.03740296271862462, 0.20913430589644122, -0.03936211125692353, 0.05188392314594239, 0.1384846976667177, -0.04157559990999289, 0.16447402443736792, 0.08819064631825313, 0.1330615949758794, 0.10273085577500751, -0.012202567479107529, -0.1667559300083667, -0.315971134591382, -0.18667410633679538, -0.0912208141409792, 0.21407555136829615, -0.1173468416031028, -0.19936912992270664, 0.3354922303231433, -0.0033836992632132025, 0.158110592426965, 0.0457092523938627, 0.2539043789613061, 0.09519784114090726, 0.07357957978674676, 0.05297811968630413, 0.17473995832842776, 0.2621927486616187, 0.020271717541618273, -0.1268410705117276, -0.09098232103278861, 0.12078552602324635] |
708.3779 | Comment: Fisher Lecture: Dimension Reduction in Regression | Comment: Fisher Lecture: Dimension Reduction in Regression [arXiv:0708.3774]
| stat.ME | comment fisher lecture dimension reduction in regression arxiv07083774 | [['comment', 'fisher', 'lecture', 'dimension', 'reduction', 'in', 'regression', 'arxiv07083774']] | [-0.0180543374735862, 0.020581837045028806, -0.09514877054607496, 0.12449243548326194, -0.1400118555757217, -0.3189979321323335, -0.019820759305730462, 0.14219930957187898, -0.12936251517385244, -0.18627265794202685, 0.21493641687266063, -0.3917643390595913, -0.33059780672192574, 0.0719880061224103, -0.24760602274909616, 0.040015009231865406, 0.03084731660783291, -0.032166552264243364, -0.22976271249353886, -0.6434077750891447, 0.2956262957304716, 0.16159943462116644, 0.3792661689221859, 0.027576426975429058, 0.14232060685753822, 0.14893603511154652, -0.24118628073483706, -0.06333551183342934, -0.18558229971677065, 0.1303406215738505, 0.4067000376744545, 0.13936997801647522, 0.2659185966476798, -0.26957020768895745, -0.18711033277213573, 0.08664591517299414, 0.09332900959998369, 0.09618624649010599, 0.1106796876701992, -0.24981547612696886, -0.1513123963959515, -0.1553487959317863, -0.051633052120450884, -0.17340946663171053, 0.0791497944155708, -0.23739862456568517, -0.15126337483525276, 0.25220632599666715, 0.13740408443845809, 0.2985245855525136, 0.08476904896087945, -0.2855363441631198, 0.03217729908647016, -0.1982929277146468, 0.04089810233563185, 0.01804303633980453, 0.18369807908311486, -0.14406746649183333, -0.26645157238817774, 0.20660349348327145, -0.12788798598921858, -0.22200120519846678, 0.03646417800337076, -0.158714912366122, -0.2114026485942304, -0.00819386332295835, 0.3712666821666062, -0.09881621529348195, -0.08245156239718199, 0.17415070487186313, -0.01634677790571004, 0.18196941656060517, 0.18509339215233922, -0.03445936040952802, 0.021505440585315228, 0.14761600317433476, -0.05083468742668629, 0.05656493693822995, -0.10446373047307134, -0.04899694269988686, -0.3653655843809247, -0.22038593981415033, -0.2572723694611341, 0.0826254915446043, -0.21619897987693548, -0.13039340637624264, 0.1632906801532954, 0.27154487697407603, 0.21876292116940022, 0.036621952487621456, 0.167314357124269, 0.11386594024952501, -0.12331111263483763, 0.11081383656710386, 0.11486714601051062, 0.20716392807662487, 0.08538154978305101, -0.07387405983172357, -0.08104116027243435, 0.33343906968366355] |
708.378 | The optical emission line spectrum of Mark 110 | We analyse in detail the rich emission line spectrum of Mark 110 to determine
the physical conditions in the nucleus of this object, a peculiar NLS1 without
any detectable Fe II emission associated with the broad line region and with a
$\lambda5007/H\beta$ line ratio unusually large for a NLS1. We use 24 spectra
obtained with the Marcario Low Resolution Spectrograph attached at the prime
focus of the 9.2 m Hobby-Eberly telescope at the McDonald observatory. We
fitted the spectrum by identifying all the emission lines (about 220) detected
in the wavelength range 4200-6900 \AA (at rest). The narrow emission lines are
probably produced in a region with a density gradient in the range
10$^{3}-10^{6}$ cm$^{-3}$ with a rather high column density (5$\times10^{21}$
cm$^{-2}$). In addition to a narrow line system, three major broad line systems
with different line velocity and width are required. We confirm the absence of
broad Fe II emission lines. We speculate that Mark 110 is in fact a BLS1 with
relatively "narrow" broad lines but with a BH mass large enough compared to its
luminosity to have a lower than Eddington luminosity.
| astro-ph | we analyse in detail the rich emission line spectrum of mark 110 to determine the physical conditions in the nucleus of this object a peculiar nls1 without any detectable fe ii emission associated with the broad line region and with a lambda5007hbeta line ratio unusually large for a nls1 we use 24 spectra obtained with the marcario low resolution spectrograph attached at the prime focus of the 92 m hobbyeberly telescope at the mcdonald observatory we fitted the spectrum by identifying all the emission lines about 220 detected in the wavelength range 42006900 aa at rest the narrow emission lines are probably produced in a region with a density gradient in the range 103106 cm3 with a rather high column density 5times1021 cm2 in addition to a narrow line system three major broad line systems with different line velocity and width are required we confirm the absence of broad fe ii emission lines we speculate that mark 110 is in fact a bls1 with relatively narrow broad lines but with a bh mass large enough compared to its luminosity to have a lower than eddington luminosity | [['we', 'analyse', 'in', 'detail', 'the', 'rich', 'emission', 'line', 'spectrum', 'of', 'mark', '110', 'to', 'determine', 'the', 'physical', 'conditions', 'in', 'the', 'nucleus', 'of', 'this', 'object', 'a', 'peculiar', 'nls1', 'without', 'any', 'detectable', 'fe', 'ii', 'emission', 'associated', 'with', 'the', 'broad', 'line', 'region', 'and', 'with', 'a', 'lambda5007hbeta', 'line', 'ratio', 'unusually', 'large', 'for', 'a', 'nls1', 'we', 'use', '24', 'spectra', 'obtained', 'with', 'the', 'marcario', 'low', 'resolution', 'spectrograph', 'attached', 'at', 'the', 'prime', 'focus', 'of', 'the', '92', 'm', 'hobbyeberly', 'telescope', 'at', 'the', 'mcdonald', 'observatory', 'we', 'fitted', 'the', 'spectrum', 'by', 'identifying', 'all', 'the', 'emission', 'lines', 'about', '220', 'detected', 'in', 'the', 'wavelength', 'range', '42006900', 'aa', 'at', 'rest', 'the', 'narrow', 'emission', 'lines', 'are', 'probably', 'produced', 'in', 'a', 'region', 'with', 'a', 'density', 'gradient', 'in', 'the', 'range', '103106', 'cm3', 'with', 'a', 'rather', 'high', 'column', 'density', '5times1021', 'cm2', 'in', 'addition', 'to', 'a', 'narrow', 'line', 'system', 'three', 'major', 'broad', 'line', 'systems', 'with', 'different', 'line', 'velocity', 'and', 'width', 'are', 'required', 'we', 'confirm', 'the', 'absence', 'of', 'broad', 'fe', 'ii', 'emission', 'lines', 'we', 'speculate', 'that', 'mark', '110', 'is', 'in', 'fact', 'a', 'bls1', 'with', 'relatively', 'narrow', 'broad', 'lines', 'but', 'with', 'a', 'bh', 'mass', 'large', 'enough', 'compared', 'to', 'its', 'luminosity', 'to', 'have', 'a', 'lower', 'than', 'eddington', 'luminosity']] | [-0.08520598145573313, 0.07810899221129675, 0.020596446807857584, 0.062397372573639566, -0.05576454166353482, -0.1665847292577064, 0.035413281523871944, 0.4860372920851401, -0.12258005283437058, -0.3593031091493417, 0.0713343631140277, -0.28298510934221127, 0.03687763435745744, 0.17102905982326655, 0.01747297751621847, -0.06244973353869816, 0.030863388645070825, -0.06870731598280289, -0.07249720254149593, -0.14624268113116382, 0.3025322006398283, 0.09447879595122213, 0.23149036683391555, 0.05531316563838366, 0.04345360432899063, -0.08664051693599528, -0.027913178307070432, 0.02359086054547746, -0.11270568746955884, 0.07730437930077926, 0.2599149777508173, 0.09860548465652645, 0.22659649978814228, -0.2846616007453798, -0.1899116658319368, 0.07761976638009843, 0.17139014802221716, 0.01995233617611026, -0.0136002694368566, -0.2694034457888678, 0.07193508729226683, -0.14918140810532649, -0.20457319435383617, 0.10322421782298899, 0.07093357820511678, 0.03451555711853374, -0.1924324970376866, 0.055169970641940666, -0.02253038287220034, 0.1325356369771959, -0.07620178044791451, -0.0956277278235406, -0.05067014899149364, 0.026317987608840392, -0.005937867305531609, 0.021188300882868185, 0.1708845220381506, -0.11792765166881042, -0.014530886544800196, 0.3884984017273442, -0.1268773776625539, 0.014494688046556679, 0.22245962637390107, -0.2563327158104038, -0.18305502930666254, 0.28862494040697895, 0.13608847566641094, 0.12611872688141942, -0.08532341066849687, 0.019609374712543214, -0.045465064628171875, 0.23121184080106313, 0.037779054176978404, 0.07022730981208425, 0.2891563110643886, 0.05855678872964243, 0.006652208626565468, 0.09476308994977405, -0.2684177124132962, -0.010185957664898673, -0.2892771814415445, -0.11653836525956301, -0.12670913088718133, 0.07531870905846826, -0.08772519017843901, -0.1267712481429322, 0.357840426805648, 0.1061794577634644, 0.3249290541394568, 0.03289312318277856, 0.24803010373798712, 0.13359828021560535, 0.10567027113217188, 0.10070624067371742, 0.2854133691089075, 0.16276255830781422, 0.15371650289693248, -0.21463684799516056, 0.023445339143133716, -0.022918813113794952] |
708.3781 | Rejoinder: Fisher Lecture: Dimension Reduction in Regression | Rejoinder: Fisher Lecture: Dimension Reduction in Regression
[arXiv:0708.3774]
| stat.ME | rejoinder fisher lecture dimension reduction in regression arxiv07083774 | [['rejoinder', 'fisher', 'lecture', 'dimension', 'reduction', 'in', 'regression', 'arxiv07083774']] | [0.08107881131581962, -0.04717068071477115, -0.1274330923333764, 0.13871754962019622, -0.11098479590145871, -0.2860194589011371, -0.040378311881795526, 0.16192143692751415, -0.1607476221397519, -0.20769146410748363, 0.19392229737422895, -0.4410094730556011, -0.32342861592769623, 0.04440533462911844, -0.28550268383696675, 0.10034299176186323, 0.05264287907630205, -0.057936197612434626, -0.16887914761900902, -0.6376818101853132, 0.2620557192713022, 0.1866510395775549, 0.41266508027911186, -0.06698670890182257, 0.17436544597148895, 0.18342004902660847, -0.21117298770695925, -0.018777127377688885, -0.15945720579475164, 0.19156732852570713, 0.44432422905083513, 0.17372230664477684, 0.3577310452237725, -0.2062347795581445, -0.17954815365374088, 0.0805847062729299, 0.0908742593601346, 0.028605792438611388, 0.1330065319489222, -0.27862922195345163, -0.15377642447128892, -0.16740814922377467, -0.029135861957911402, -0.15185219887644053, 0.03049678646493703, -0.23622104746755213, -0.24378996714949608, 0.2860740260221064, 0.16334319137968123, 0.3628821037709713, 0.10429144953377545, -0.2661450309678912, 0.09005457331659272, -0.15055156488961075, -0.006935388781130314, 0.03454067278653383, 0.11659992521163076, -0.14556969623663463, -0.2630424772796687, 0.1826083249761723, -0.11746791983023286, -0.251420384272933, 0.03538994584232569, -0.09246753668412566, -0.2190100415609777, 0.007915752241387963, 0.42359152249991894, -0.11372431111522019, -0.10870322398841381, 0.14647835632786155, 0.057648599962703884, 0.16608961741439998, 0.12916836561635137, -0.131406017113477, 0.03350242134183645, 0.12350135412998497, -0.03772920183837414, 0.04105037021508906, -0.13064364390447736, -0.06378440523985773, -0.36271987576037645, -0.23042548168450594, -0.25957860122434795, 0.07414704433176666, -0.21579731802921742, -0.14564203098416328, 0.20835029776208103, 0.2220340739004314, 0.12746385671198368, 0.054261318931821734, 0.1618356229737401, 0.08345727005507797, -0.10318662505596876, 0.09736634558066726, 0.035129603813402355, 0.2722580097615719, 0.08882856369018555, -0.03820000099949539, 0.02722720499150455, 0.34948113455902785] |
708.3782 | QCD-resummation and non-minimal flavour-violation for supersymmetric
particle production at hadron colliders | Cross sections for supersymmetric particles production at hadron colliders
have been extensively studied in the past at leading order and also at
next-to-leading order of perturbative QCD. The radiative corrections include
large logarithms which have to be resummed to all orders in the strong coupling
constant in order to get reliable perturbative results. In this work, we
perform a first and extensive study of the resummation effects for
supersymmetric particle pair production at hadron colliders. We focus on
Drell-Yan like slepton-pair and slepton-sneutrino associated production in
minimal supergravity and gauge-mediated supersymmetry-breaking scenarios, and
present accurate transverse-momentum and invariant-mass distributions, as well
as total cross sections.
In non-minimal supersymmetric models, novel effects of flavour violation may
occur. In this case, the flavour structure in the squark sector cannot be
directly deduced from the trilinear Yukawa couplings of the fermion and Higgs
supermultiplets. We perform a precise numerical analysis of the experimentally
allowed parameter space in the case of minimal supergravity scenarios with
non-minimal flavour violation, looking for regions allowed by low-energy,
electroweak precision, and cosmological data. Leading order cross sections for
the production of squarks and gauginos at hadron colliders are implemented in a
flexible computer program, allowing us to study in detail the dependence of
these cross sections on flavour violation.
| hep-ph | cross sections for supersymmetric particles production at hadron colliders have been extensively studied in the past at leading order and also at nexttoleading order of perturbative qcd the radiative corrections include large logarithms which have to be resummed to all orders in the strong coupling constant in order to get reliable perturbative results in this work we perform a first and extensive study of the resummation effects for supersymmetric particle pair production at hadron colliders we focus on drellyan like sleptonpair and sleptonsneutrino associated production in minimal supergravity and gaugemediated supersymmetrybreaking scenarios and present accurate transversemomentum and invariantmass distributions as well as total cross sections in nonminimal supersymmetric models novel effects of flavour violation may occur in this case the flavour structure in the squark sector cannot be directly deduced from the trilinear yukawa couplings of the fermion and higgs supermultiplets we perform a precise numerical analysis of the experimentally allowed parameter space in the case of minimal supergravity scenarios with nonminimal flavour violation looking for regions allowed by lowenergy electroweak precision and cosmological data leading order cross sections for the production of squarks and gauginos at hadron colliders are implemented in a flexible computer program allowing us to study in detail the dependence of these cross sections on flavour violation | [['cross', 'sections', 'for', 'supersymmetric', 'particles', 'production', 'at', 'hadron', 'colliders', 'have', 'been', 'extensively', 'studied', 'in', 'the', 'past', 'at', 'leading', 'order', 'and', 'also', 'at', 'nexttoleading', 'order', 'of', 'perturbative', 'qcd', 'the', 'radiative', 'corrections', 'include', 'large', 'logarithms', 'which', 'have', 'to', 'be', 'resummed', 'to', 'all', 'orders', 'in', 'the', 'strong', 'coupling', 'constant', 'in', 'order', 'to', 'get', 'reliable', 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708.3783 | Resonantly damped surface and body MHD waves in a solar coronal slab
with oblique propagation | The theory of magnetohydrodynamic (MHD) waves in solar coronal slabs in a
zero-$\beta$ configuration and for parallel propagation of waves does not allow
the existence of surface waves. When oblique propagation of perturbations is
considered both surface and body waves are able to propagate. When the
perpendicular wave number is larger than a certain value, the body kink mode
becomes a surface wave. In addition, a sausage surface mode is found below the
internal cut-off frequency. When non-uniformity in the equilibrium is included,
surface and body modes are damped due to resonant absorption. In this paper,
first, a normal-mode analysis is performed and the period, the damping rate,
and the spatial structure of eigenfunctions are obtained. Then, the
time-dependent problem is solved, and the conditions under which one or the
other type of mode is excited are investigated.
| astro-ph | the theory of magnetohydrodynamic mhd waves in solar coronal slabs in a zerobeta configuration and for parallel propagation of waves does not allow the existence of surface waves when oblique propagation of perturbations is considered both surface and body waves are able to propagate when the perpendicular wave number is larger than a certain value the body kink mode becomes a surface wave in addition a sausage surface mode is found below the internal cutoff frequency when nonuniformity in the equilibrium is included surface and body modes are damped due to resonant absorption in this paper first a normalmode analysis is performed and the period the damping rate and the spatial structure of eigenfunctions are obtained then the timedependent problem is solved and the conditions under which one or the other type of mode is excited are investigated | [['the', 'theory', 'of', 'magnetohydrodynamic', 'mhd', 'waves', 'in', 'solar', 'coronal', 'slabs', 'in', 'a', 'zerobeta', 'configuration', 'and', 'for', 'parallel', 'propagation', 'of', 'waves', 'does', 'not', 'allow', 'the', 'existence', 'of', 'surface', 'waves', 'when', 'oblique', 'propagation', 'of', 'perturbations', 'is', 'considered', 'both', 'surface', 'and', 'body', 'waves', 'are', 'able', 'to', 'propagate', 'when', 'the', 'perpendicular', 'wave', 'number', 'is', 'larger', 'than', 'a', 'certain', 'value', 'the', 'body', 'kink', 'mode', 'becomes', 'a', 'surface', 'wave', 'in', 'addition', 'a', 'sausage', 'surface', 'mode', 'is', 'found', 'below', 'the', 'internal', 'cutoff', 'frequency', 'when', 'nonuniformity', 'in', 'the', 'equilibrium', 'is', 'included', 'surface', 'and', 'body', 'modes', 'are', 'damped', 'due', 'to', 'resonant', 'absorption', 'in', 'this', 'paper', 'first', 'a', 'normalmode', 'analysis', 'is', 'performed', 'and', 'the', 'period', 'the', 'damping', 'rate', 'and', 'the', 'spatial', 'structure', 'of', 'eigenfunctions', 'are', 'obtained', 'then', 'the', 'timedependent', 'problem', 'is', 'solved', 'and', 'the', 'conditions', 'under', 'which', 'one', 'or', 'the', 'other', 'type', 'of', 'mode', 'is', 'excited', 'are', 'investigated']] | [-0.1973799341931885, 0.20836349002733504, -0.028450670220173786, 0.06811018222504282, -0.10145818524271843, -0.0872056274033705, -0.035402433533369956, 0.35124441274050355, -0.2457272782854304, -0.2498417051738479, 0.11876275330112127, -0.2612410667824788, -0.12368964267206257, 0.21173517066695174, 0.03658634036158522, 0.05405045180468469, 0.06841316438141698, 0.030061458498981876, -0.009775603841315362, -0.1289454613047976, 0.31047557271591836, 0.05966085694440087, 0.2743690070439724, 0.014682303079441055, 0.03369770902613907, -0.03685041323078094, 0.02867950968325401, 0.0314763847913971, -0.12148456252686193, 0.03722044872879253, 0.20895798049520858, 0.04738698111074315, 0.262151899941576, -0.4894278251120578, -0.26121818337697483, 0.01619482064700645, 0.16995915652765636, 0.16011569830099714, 0.0019178428936857676, -0.23865570242017292, 0.06881115549544305, -0.08446119080695823, -0.18360708389039812, 0.030329729626090197, 0.03194854358562093, 0.003105580705501463, -0.2707815013873978, 0.12152362861873015, 0.06658666078304953, 0.0368542805503028, -0.12260556708265474, -0.04341411334968617, -0.10999582209658093, 0.05916695778938921, 0.12088857824826424, 0.04206264839993547, 0.12522395638465558, -0.10122087957047304, -0.04200020446981965, 0.40601434517209756, -0.08495312291115228, -0.24459900099622167, 0.20160076409861769, -0.20114743805185054, -0.014268901978578904, 0.19991012485495405, 0.19065693450038848, 0.1141555489908121, -0.09311688517882957, 0.055585608322450054, -0.011575163736647548, 0.17669937766386548, 0.14492755712590355, 0.011233047669942396, 0.22209323852228513, 0.1316226425131891, 0.06259539867776608, 0.11834024028950438, -0.14974885854778974, -0.02449212028928425, -0.2826312090796621, -0.1244281198984633, -0.14513677709750272, -0.0108732528398463, -0.0249544355549691, -0.20817761197416246, 0.4227977426844123, 0.08529709002502478, 0.12797999833170595, 0.006406100724142153, 0.2867724859371673, 0.18957737297413574, 0.026548132014927367, 0.12825416054819588, 0.32394001121376303, 0.18716390440375477, 0.08462980036637273, -0.25171592880202376, 0.030129374541423243, 0.03752190485070257] |
708.3784 | Localization of quantum wave packets | We study the semiclassical propagation of squeezed Gau{\ss}ian states. We do
so by considering the propagation theorem introduced by Combescure and Robert
\cite{CR97} approximating the evolution generated by the Weyl-quantization of
symbols $H$. We examine the particular case when the Hessian
$H^{\prime\prime}(X_{t})$ evaluated at the corresponding solution $X_{t}$ of
Hamilton's equations of motion is periodic in time. Under this assumption, we
show that the width of the wave packet can remain small up to the Ehrenfest
time. We also determine conditions for ``classical revivals'' in that case.
More generally, we may define recurrences of the initial width. Some of these
results include the case of unbounded classical motion. In the classically
unstable case we recover an exponential spreading of the wave packet as in
\cite{CR97}.
| math-ph math.MP | we study the semiclassical propagation of squeezed gaussian states we do so by considering the propagation theorem introduced by combescure and robert citecr97 approximating the evolution generated by the weylquantization of symbols h we examine the particular case when the hessian hprimeprimex_t evaluated at the corresponding solution x_t of hamiltons equations of motion is periodic in time under this assumption we show that the width of the wave packet can remain small up to the ehrenfest time we also determine conditions for classical revivals in that case more generally we may define recurrences of the initial width some of these results include the case of unbounded classical motion in the classically unstable case we recover an exponential spreading of the wave packet as in citecr97 | [['we', 'study', 'the', 'semiclassical', 'propagation', 'of', 'squeezed', 'gaussian', 'states', 'we', 'do', 'so', 'by', 'considering', 'the', 'propagation', 'theorem', 'introduced', 'by', 'combescure', 'and', 'robert', 'citecr97', 'approximating', 'the', 'evolution', 'generated', 'by', 'the', 'weylquantization', 'of', 'symbols', 'h', 'we', 'examine', 'the', 'particular', 'case', 'when', 'the', 'hessian', 'hprimeprimex_t', 'evaluated', 'at', 'the', 'corresponding', 'solution', 'x_t', 'of', 'hamiltons', 'equations', 'of', 'motion', 'is', 'periodic', 'in', 'time', 'under', 'this', 'assumption', 'we', 'show', 'that', 'the', 'width', 'of', 'the', 'wave', 'packet', 'can', 'remain', 'small', 'up', 'to', 'the', 'ehrenfest', 'time', 'we', 'also', 'determine', 'conditions', 'for', 'classical', 'revivals', 'in', 'that', 'case', 'more', 'generally', 'we', 'may', 'define', 'recurrences', 'of', 'the', 'initial', 'width', 'some', 'of', 'these', 'results', 'include', 'the', 'case', 'of', 'unbounded', 'classical', 'motion', 'in', 'the', 'classically', 'unstable', 'case', 'we', 'recover', 'an', 'exponential', 'spreading', 'of', 'the', 'wave', 'packet', 'as', 'in', 'citecr97']] | [-0.16651134102409013, 0.15597039186754091, -0.07421093596114724, 0.0881438052112406, -0.02046837722536269, -0.08519244828253739, 0.009892026903415637, 0.3539364460301547, -0.2974342939343827, -0.21235283285818132, 0.1120856646660038, -0.23430628703968706, -0.16405816410845223, 0.18616701903067961, -0.04957696233976109, 0.08568758395508178, 0.07283565821126103, 0.06083774152173361, -0.06301318044766538, -0.2514135214261526, 0.34844291621572837, 0.015134835994825506, 0.211815253165666, 0.020028101362592025, 0.07120263804527661, 0.04711021078665825, -0.019657366701270922, -0.011144986795646347, -0.16722219411251502, 0.04249080849863389, 0.19052689023746933, 0.12099575338315618, 0.28070817233933026, -0.4428707707427011, -0.21011568030942818, 0.11352643776253975, 0.14972338176809621, 0.16518336656688104, 0.014206075644594895, -0.3132780749304605, 0.0901677805029841, -0.11687588387299791, -0.21019353875736438, -0.035025184188992524, 0.023060769342994395, 0.05324110264932229, -0.22068482711680296, 0.10471467310269286, 0.0983380491244953, -0.014881279839064218, -0.07529830161293521, -0.05771952755133475, -0.018459692543511055, 0.08015767932789639, 0.0598412041152127, -0.03293777974841978, 0.0785790907049721, -0.11065598775648074, -0.0857919938400511, 0.36993445035778294, -0.10774600174093296, -0.24741910812098625, 0.13026663803972674, -0.17818576819984983, -0.08954011093948253, 0.11043325361357001, 0.16860675149066143, 0.13598784478381276, -0.11335567887047449, 0.09024594198818095, -0.06066809750853822, 0.12206471595895854, 0.1681817907239657, 0.03634361761876128, 0.1005551046884257, 0.07655368960454814, 0.06869930310236398, 0.16537807147357275, -0.09587084898371095, -0.15647719190879303, -0.3445452404601022, -0.1450818433726499, -0.1761314944779762, 0.0963210204030745, -0.07735570065264902, -0.16283164560517743, 0.39205382760154267, 0.15539368119067704, 0.17523121542859177, 0.09227840230253732, 0.23940429798796897, 0.19581177697443858, -0.0008237758015000073, 0.09894667097389234, 0.21642859179015686, 0.12777819934162535, 0.09503836823966015, -0.22673714802839046, 0.05999949528674079, 0.06212506023950467] |
708.3785 | Perfect Teleportation, Quantum state sharing and Superdense Coding
through a Genuinely Entangled Five-qubit State | We investigate the usefulness of a recently introduced five qubit state by
Brown $\it et al. \normalfont$ \cite{Brown} for quantum teleportation, quantum
state sharing and superdense coding. It is shown that this five-qubit state can
be utilized for perfect teleportation of arbitrary single and two qubit
systems. We devise various schemes for quantum state sharing of an arbitrary
single and two particle state via cooperative teleportation. We later show that
this state can be used for superdense coding as well. It is found that five
classical bits can be sent by sending only three quantum bits.
| quant-ph | we investigate the usefulness of a recently introduced five qubit state by brown it et al normalfont citebrown for quantum teleportation quantum state sharing and superdense coding it is shown that this fivequbit state can be utilized for perfect teleportation of arbitrary single and two qubit systems we devise various schemes for quantum state sharing of an arbitrary single and two particle state via cooperative teleportation we later show that this state can be used for superdense coding as well it is found that five classical bits can be sent by sending only three quantum bits | [['we', 'investigate', 'the', 'usefulness', 'of', 'a', 'recently', 'introduced', 'five', 'qubit', 'state', 'by', 'brown', 'it', 'et', 'al', 'normalfont', 'citebrown', 'for', 'quantum', 'teleportation', 'quantum', 'state', 'sharing', 'and', 'superdense', 'coding', 'it', 'is', 'shown', 'that', 'this', 'fivequbit', 'state', 'can', 'be', 'utilized', 'for', 'perfect', 'teleportation', 'of', 'arbitrary', 'single', 'and', 'two', 'qubit', 'systems', 'we', 'devise', 'various', 'schemes', 'for', 'quantum', 'state', 'sharing', 'of', 'an', 'arbitrary', 'single', 'and', 'two', 'particle', 'state', 'via', 'cooperative', 'teleportation', 'we', 'later', 'show', 'that', 'this', 'state', 'can', 'be', 'used', 'for', 'superdense', 'coding', 'as', 'well', 'it', 'is', 'found', 'that', 'five', 'classical', 'bits', 'can', 'be', 'sent', 'by', 'sending', 'only', 'three', 'quantum', 'bits']] | [-0.1381158823037128, 0.2045465685489992, -0.0950830386363362, 0.02473515412941771, 0.027673788233905247, -0.2971316097255208, 0.07099514973202818, 0.370906420385367, -0.2646238510643965, -0.3023630698456576, 0.0731933307307037, -0.21147431728283042, -0.12250211673396591, 0.216161222115012, -0.08349279440743358, 0.14583704615391693, 0.05162927880883217, 0.05510253261921829, -0.013470486338299356, -0.34179268789134526, 0.3207995452869095, 0.03296962072092451, 0.3152008137224536, -0.01692723869591167, 0.11251290148418201, 0.03935316332468861, 0.04396579369510475, -0.01802866586336964, -0.07906470789787004, 0.05246701162112387, 0.31991487200322904, 0.1750020288470152, 0.23399352858725347, -0.39973655037189787, -0.28814305339596774, 0.08302816300603905, 0.1528710565897391, 0.2232413503856055, -0.061393031428911185, -0.32667828968873147, 0.08734023100941589, -0.2800918899525545, 0.00038484530033249605, -0.11868472605159408, -0.01258975277213674, -0.05170551755122448, -0.24645560336740394, 0.02336788379440182, 0.040979210783629434, -0.04586021365891946, 0.01879751643067912, -0.057557465067427406, 0.043537822896369587, 0.15948172641525926, -0.15949553581150738, 0.04094142814313895, 0.10988642551298988, -0.09263337461130791, -0.23428658347968992, 0.3236352111801113, -0.02030830362223481, -0.20795293026848843, 0.15629598353254168, -0.027150763002665418, -0.08759820848507316, 0.01814123894529123, 0.09085697106232768, 0.13149709024123454, -0.12743787117498487, 0.02314110423597556, -0.052546553490193264, 0.24326441354657474, 0.10152839533984662, 0.1564243797555958, 0.17451653274290851, 0.05888138485637395, 0.06312090945675185, 0.2024210078490126, -0.090967272077442, -0.18784911513242772, -0.2591167430442415, -0.2338299166950348, -0.2552117790340593, 0.1125456071311706, -0.04665087364862158, -0.04597332814898293, 0.35438959783825436, 0.08488250194105172, 0.13087299103897654, -0.04539506611120152, 0.2919508485932295, 0.11078561012461585, 0.0008375448309571335, 0.15614963867456505, 0.24484845784149672, 0.156190808534034, 0.06282821005504383, -0.22425430046982672, 0.06842606701937161, 0.02831827229575107] |
708.3786 | Temperature and Polarization CMB Maps from Primordial non-Gaussianities
of the Local Type | The forthcoming Planck experiment will provide high sensitivity polarization
measurements that will allow us to further tighten the f_NL bounds from the
temperature data. Monte Carlo simulations of non-Gaussian CMB maps have been
used as a fundamental tool to characterize non-Gaussian signatures in the data,
as they allow us to calibrate any statistical estimators and understand the
effect of systematics, foregrounds and other contaminants. We describe an
algorithm to generate high-angular resolution simulations of non-Gaussian CMB
maps in temperature and polarization. We consider non-Gaussianities of the
local type, for which the level of non-Gaussianity is defined by the
dimensionless parameter, f_NL. We then apply the temperature and polarization
fast cubic statistics recently developed by Yadav et al. to a set of
non-Gaussian temperature and polarization simulations. We compare our results
to theoretical expectations based on a Fisher matrix analysis, test the
unbiasedness of the estimator, and study the dependence of the error bars on
f_NL. All our results are in very good agreement with theoretical predictions,
thus confirming the reliability of both the simulation algorithm and the fast
cubic temperature and polarization estimator.
| astro-ph | the forthcoming planck experiment will provide high sensitivity polarization measurements that will allow us to further tighten the f_nl bounds from the temperature data monte carlo simulations of nongaussian cmb maps have been used as a fundamental tool to characterize nongaussian signatures in the data as they allow us to calibrate any statistical estimators and understand the effect of systematics foregrounds and other contaminants we describe an algorithm to generate highangular resolution simulations of nongaussian cmb maps in temperature and polarization we consider nongaussianities of the local type for which the level of nongaussianity is defined by the dimensionless parameter f_nl we then apply the temperature and polarization fast cubic statistics recently developed by yadav et al to a set of nongaussian temperature and polarization simulations we compare our results to theoretical expectations based on a fisher matrix analysis test the unbiasedness of the estimator and study the dependence of the error bars on f_nl all our results are in very good agreement with theoretical predictions thus confirming the reliability of both the simulation algorithm and the fast cubic temperature and polarization estimator | [['the', 'forthcoming', 'planck', 'experiment', 'will', 'provide', 'high', 'sensitivity', 'polarization', 'measurements', 'that', 'will', 'allow', 'us', 'to', 'further', 'tighten', 'the', 'f_nl', 'bounds', 'from', 'the', 'temperature', 'data', 'monte', 'carlo', 'simulations', 'of', 'nongaussian', 'cmb', 'maps', 'have', 'been', 'used', 'as', 'a', 'fundamental', 'tool', 'to', 'characterize', 'nongaussian', 'signatures', 'in', 'the', 'data', 'as', 'they', 'allow', 'us', 'to', 'calibrate', 'any', 'statistical', 'estimators', 'and', 'understand', 'the', 'effect', 'of', 'systematics', 'foregrounds', 'and', 'other', 'contaminants', 'we', 'describe', 'an', 'algorithm', 'to', 'generate', 'highangular', 'resolution', 'simulations', 'of', 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708.3787 | Black-Hole Mass and Growth Rate at High Redshift | We present new H and K bands spectroscopy of 15 high luminosity active
galactic nuclei (AGNs) at redshifts 2.3-3.4 obtained on Gemini South. We
combined the data with spectra of additional 29 high-luminosity sources to
obtain a sample with 10^{45.2}<\lambda L_{\lambda}(5100A)<10^{47.3} ergs/sec
and black hole (BH) mass range, using reverberation mapping relationships based
on the H_beta method, of 10^{8.8}-10^{10.7} M_sun. We do not find a correlation
of L/L_Edd with M_BH but find a correlation with \lambda L_{\lambda}(5100A)
which might be due to selection effects. The L/L_Edd distribution is broad and
covers the range ~0.07-1.6, similar to what is observed in lower redshift,
lower luminosity AGNs. We suggest that this consistently measured and
calibrated sample gives the best representation of L/L_Edd at those redshifts
and note potential discrepancies with recent theoretical and observational
studies. The lower accretion rates are not in accord with growth scenarios for
BHs at such redshifts and the growth times of many of the sources are longer
than the age of the universe at the corresponding epochs. This suggests earlier
episodes of faster growth at z>~3 for those sources. The use of the C IV method
gives considerably different results and a larger scatter; this method seems to
be a poor M_BH and L/L_Edd estimator at very high luminosity.
| astro-ph | we present new h and k bands spectroscopy of 15 high luminosity active galactic nuclei agns at redshifts 2334 obtained on gemini south we combined the data with spectra of additional 29 highluminosity sources to obtain a sample with 10452lambda l_lambda5100a10473 ergssec and black hole bh mass range using reverberation mapping relationships based on the h_beta method of 108810107 m_sun we do not find a correlation of ll_edd with m_bh but find a correlation with lambda l_lambda5100a which might be due to selection effects the ll_edd distribution is broad and covers the range 00716 similar to what is observed in lower redshift lower luminosity agns we suggest that this consistently measured and calibrated sample gives the best representation of ll_edd at those redshifts and note potential discrepancies with recent theoretical and observational studies the lower accretion rates are not in accord with growth scenarios for bhs at such redshifts and the growth times of many of the sources are longer than the age of the universe at the corresponding epochs this suggests earlier episodes of faster growth at z3 for those sources the use of the c iv method gives considerably different results and a larger scatter this method seems to be a poor m_bh and ll_edd estimator at very high luminosity | [['we', 'present', 'new', 'h', 'and', 'k', 'bands', 'spectroscopy', 'of', '15', 'high', 'luminosity', 'active', 'galactic', 'nuclei', 'agns', 'at', 'redshifts', '2334', 'obtained', 'on', 'gemini', 'south', 'we', 'combined', 'the', 'data', 'with', 'spectra', 'of', 'additional', '29', 'highluminosity', 'sources', 'to', 'obtain', 'a', 'sample', 'with', '10452lambda', 'l_lambda5100a10473', 'ergssec', 'and', 'black', 'hole', 'bh', 'mass', 'range', 'using', 'reverberation', 'mapping', 'relationships', 'based', 'on', 'the', 'h_beta', 'method', 'of', '108810107', 'm_sun', 'we', 'do', 'not', 'find', 'a', 'correlation', 'of', 'll_edd', 'with', 'm_bh', 'but', 'find', 'a', 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708.3788 | Dimensional Reduction of Conformal Tensors and Einstein-Weyl Spaces | Conformal Weyl and Cotton tensors are dimensionally reduced by a Kaluza-Klein
procedure. Explicit formulas are given for reducing from four and three
dimensions to three and two dimensions, respectively. When the higher
dimensional conformal tensor vanishes because the space is conformallly flat,
the lower-dimensional Kaluza-Klein functions satisfy equations that coincide
with the Einstein-Weyl equations in three dimensions and kink equations in two
dimensions.
| math-ph gr-qc hep-th math.MP | conformal weyl and cotton tensors are dimensionally reduced by a kaluzaklein procedure explicit formulas are given for reducing from four and three dimensions to three and two dimensions respectively when the higher dimensional conformal tensor vanishes because the space is conformallly flat the lowerdimensional kaluzaklein functions satisfy equations that coincide with the einsteinweyl equations in three dimensions and kink equations in two dimensions | [['conformal', 'weyl', 'and', 'cotton', 'tensors', 'are', 'dimensionally', 'reduced', 'by', 'a', 'kaluzaklein', 'procedure', 'explicit', 'formulas', 'are', 'given', 'for', 'reducing', 'from', 'four', 'and', 'three', 'dimensions', 'to', 'three', 'and', 'two', 'dimensions', 'respectively', 'when', 'the', 'higher', 'dimensional', 'conformal', 'tensor', 'vanishes', 'because', 'the', 'space', 'is', 'conformallly', 'flat', 'the', 'lowerdimensional', 'kaluzaklein', 'functions', 'satisfy', 'equations', 'that', 'coincide', 'with', 'the', 'einsteinweyl', 'equations', 'in', 'three', 'dimensions', 'and', 'kink', 'equations', 'in', 'two', 'dimensions']] | [-0.13748560154870634, 0.21759671856078408, 0.040702116825888236, 0.05165723571741593, -0.0964613653298828, -0.19169956658245815, -0.1356807189032195, 0.2822163327476911, -0.13860619816208078, -0.23179593547660438, 0.13606606478307157, -0.30267916300574377, -0.19093479665987675, 0.1378654925633342, 0.02469939707835663, 0.054259484468568715, -0.027965090958581816, 0.027899489587833805, -0.1917245567442038, -0.3476654269991653, 0.44233301275920484, -0.0748254347802891, 0.3218867190092081, -0.015623850334856299, 0.1822040363124782, -0.06989942094491373, -0.027473799471232678, 0.07903114922538085, -0.11060466421000573, 0.12044025826898794, 0.270323887407299, 0.026485575002528006, 0.13819116197766795, -0.44246694640887363, -0.18359049914344663, 0.018478194281699195, 0.1726037510520508, 0.12708765549224713, 0.0675745099752901, -0.2551684501851278, 0.09032353876729406, -0.13796804675028748, -0.17360816648860852, -0.1375404094766465, -0.0007099518477315864, -0.12215722727799608, -0.21517404967979079, 0.13743828563019633, 0.052661999357834215, 0.02893115647677933, -0.164008344448502, -0.11780875904725925, -0.13129542044724427, 0.07108600958740534, 0.12877889626449154, -0.04192850240055592, 0.030716303428034147, -0.12365184437576024, -0.13744818483434257, 0.3483799579102666, -0.06697160315008895, -0.3861147999282806, 0.19039387120715073, -0.14937160935463203, -0.14111870095404166, 0.15456709528206697, 0.1258522305401012, 0.14031096126493667, -0.12537693263584515, 0.20229324908371293, 0.010795451024727475, 0.06844336163973616, 0.2079217908753743, 0.011433668276895919, 0.1909314913810381, 0.03354811041630925, 0.059221538016572595, 0.15612042409878585, -0.005478798682170529, -0.11881845890198864, -0.3867918199469005, -0.20421908355708565, -0.1214928332032756, 0.08395477836470931, -0.24014796640239505, -0.13727896107781318, 0.3469619287343155, 0.050090824434582536, 0.1616218968063608, 0.08436059079042846, 0.23918061406021157, 0.15192353196682468, 0.09769586636684835, 0.1122660627062883, 0.2186076629366125, 0.14199548697234282, 0.05809225589262262, -0.1639366891918584, -0.18877561489540723, 0.2390847934274784] |
708.3789 | Efficient qubit detection using alkali earth metal ions and a double
STIRAP process | We present a scheme for robust and efficient projection measurement of a
qubit consisting of the two magnetic sublevels in the electronic ground state
of alkali earth metal ions. The scheme is based on two stimulated Raman
adiabatic passages (STIRAP) involving four partially coherent laser fields. We
show how the efficiency depends on experimentally relevant parameters: Rabi
frequencies, pulse widths, laser linewidths, one- and two-photon detunings,
residual laser power, laser polarization and ion motion.
| quant-ph | we present a scheme for robust and efficient projection measurement of a qubit consisting of the two magnetic sublevels in the electronic ground state of alkali earth metal ions the scheme is based on two stimulated raman adiabatic passages stirap involving four partially coherent laser fields we show how the efficiency depends on experimentally relevant parameters rabi frequencies pulse widths laser linewidths one and twophoton detunings residual laser power laser polarization and ion motion | [['we', 'present', 'a', 'scheme', 'for', 'robust', 'and', 'efficient', 'projection', 'measurement', 'of', 'a', 'qubit', 'consisting', 'of', 'the', 'two', 'magnetic', 'sublevels', 'in', 'the', 'electronic', 'ground', 'state', 'of', 'alkali', 'earth', 'metal', 'ions', 'the', 'scheme', 'is', 'based', 'on', 'two', 'stimulated', 'raman', 'adiabatic', 'passages', 'stirap', 'involving', 'four', 'partially', 'coherent', 'laser', 'fields', 'we', 'show', 'how', 'the', 'efficiency', 'depends', 'on', 'experimentally', 'relevant', 'parameters', 'rabi', 'frequencies', 'pulse', 'widths', 'laser', 'linewidths', 'one', 'and', 'twophoton', 'detunings', 'residual', 'laser', 'power', 'laser', 'polarization', 'and', 'ion', 'motion']] | [-0.16256612149142735, 0.28940492052886935, 0.00048553256468998417, 0.004345130139168956, 0.022661397982439078, -0.1806205207217686, 0.10576326335541199, 0.5323597523509651, -0.2198576722923364, -0.23548441360125671, -0.04226808321215464, -0.22488307351611453, -0.016681782668456435, 0.28919710016280814, 0.05306955090270856, 0.07222834623708213, 0.07689831181542596, -0.06142138923845581, -0.0016680095797857724, -0.1374167627088625, 0.3053877291055648, 0.031416930094663356, 0.3345825242356876, 0.018859735098541587, 0.1426507351712349, -0.011721187283763208, 0.10159256548394223, -0.1270089302797223, -0.07327627972699702, 0.10698766646139021, 0.24745728950192397, 0.02626119937898742, 0.24938769629728552, -0.46350483525846453, -0.17065729622452244, 0.02137201911505513, 0.107819280700799, 0.2361479645494271, -0.06900459062308073, -0.31097834924789697, -0.10675571627310805, -0.14034570566051313, -0.06608508566923037, -0.11107696673354588, 0.001641405079312421, 0.05173836786904045, -0.2942260896529046, 0.04103412780583509, 0.0068283884367603504, 0.08228321815211628, -0.08755545948342597, -0.07109116374301044, 0.0197774120449164, 0.012224637053755892, -0.04279370391678468, -0.03793652164372238, 0.2734633962674117, -0.05118996193443702, -0.14296482895450616, 0.38005361534856463, -0.13995868843552228, -0.08363355527556426, 0.12145447878582352, -0.18871720478794463, -0.03757683156259559, 0.1921462910753247, 0.10007997959965488, 0.16245192708447576, -0.07720091505718694, -0.003976981780913382, 0.04047311994096113, 0.2573279217006013, 0.17136235043683365, 0.16252107782339728, 0.17288496208100304, 0.1418037669343018, 0.037953495488476915, 0.1500895352362784, -0.18428260738004906, -0.059550263037955437, -0.19347271042548725, -0.10915702178671553, -0.17690581813882533, 0.07650535070412867, -0.03124518336895759, -0.09547754968642383, 0.47853189563043214, 0.15456541810134375, 0.12845260926799193, -0.13484434144118349, 0.3941509237361921, 0.14792218097686968, -0.04460720690218983, -0.004367023695423897, 0.29810379011355137, 0.22192613295329786, 0.06045831402298063, -0.3695676641198932, 0.0002351011011145405, 0.03177290632880318] |
708.379 | Singlet fermion dark matter and electroweak baryogenesis with radiative
neutrino mass | The model of radiative neutrino mass with dark matter proposed by one of us
is extended to include a real singlet scalar field. There are then two
important new consequences. One is the realistic possibility of having the
lightest neutral singlet fermion (instead of the lightest neutral component of
the dark scalar doublet) as the dark matter of the Universe. The other is a
modification of the effective Higgs potential of the Standard Model, consistent
with electroweak baryogenesis.
| hep-ph | the model of radiative neutrino mass with dark matter proposed by one of us is extended to include a real singlet scalar field there are then two important new consequences one is the realistic possibility of having the lightest neutral singlet fermion instead of the lightest neutral component of the dark scalar doublet as the dark matter of the universe the other is a modification of the effective higgs potential of the standard model consistent with electroweak baryogenesis | [['the', 'model', 'of', 'radiative', 'neutrino', 'mass', 'with', 'dark', 'matter', 'proposed', 'by', 'one', 'of', 'us', 'is', 'extended', 'to', 'include', 'a', 'real', 'singlet', 'scalar', 'field', 'there', 'are', 'then', 'two', 'important', 'new', 'consequences', 'one', 'is', 'the', 'realistic', 'possibility', 'of', 'having', 'the', 'lightest', 'neutral', 'singlet', 'fermion', 'instead', 'of', 'the', 'lightest', 'neutral', 'component', 'of', 'the', 'dark', 'scalar', 'doublet', 'as', 'the', 'dark', 'matter', 'of', 'the', 'universe', 'the', 'other', 'is', 'a', 'modification', 'of', 'the', 'effective', 'higgs', 'potential', 'of', 'the', 'standard', 'model', 'consistent', 'with', 'electroweak', 'baryogenesis']] | [-0.08904619253455447, 0.24246548609031984, -0.05353545047677098, 0.1903123465495017, -0.11071278102313861, -0.19867786276751223, -0.055404261232186586, 0.27571726536067825, -0.17055338822329083, -0.33776379716940796, -0.003820717722798387, -0.2524380424561409, -0.009981269781024028, 0.09704604688196038, 0.11124830552114126, 0.03221083614521493, -0.03237513565004636, 0.07675101082676496, -0.005055136118943875, -0.2726667743021001, 0.39761268714060766, -0.0025091752505455264, 0.15208913877797434, 0.069090136888031, 0.07205212565186696, -0.037199913655431606, -0.017006850941703677, -0.11606305112871222, -0.08260041915883239, 0.11218527029865445, 0.09223551839255752, 0.10806624130465281, 0.18797462731778908, -0.3611498928318421, -0.23650120528271565, 0.23278627551805514, 0.13710658276716295, 0.12088407289523345, -0.1349197855959527, -0.33118706850860363, 0.05670722626531736, -0.2417977610602975, -0.14762733065379927, -0.0334983927776846, -0.07576372848602776, -0.11818824333544725, -0.31770511807348484, 0.12325074595737999, -0.0744896780890532, -0.06650638873151575, -0.057257777402320735, -0.16124788337411025, -0.09735440774462543, -0.012520363518538384, 0.18537324437728295, -0.022818668972318754, 0.19524615888710684, -0.2351272150229376, -0.10783998207607044, 0.4759488210846216, -0.1921559264540123, -0.13459271722389624, 0.1453365269714059, -0.10887681879103184, -0.11585428464847307, 0.15810411592097715, 0.09499201001838231, 0.06719115911982954, -0.1363751839559812, 0.1872624971020298, -0.10997353929978533, 0.17021792083501053, -0.00774325321141917, 0.03674298531423586, 0.3627612699682896, 0.21887220308566704, 0.06445587606718525, 0.049084962256855734, -0.0555555596231268, -0.13252029455123612, -0.4065348559942765, -0.2028547697745335, -0.09424601821825863, 0.0036488330493179653, -0.09761077268287921, -0.13212893600575626, 0.4594926508382345, 0.1342483559050239, 0.1920218882150948, -0.054520794978508584, 0.34677613706578714, 0.053619399707083806, 0.08238336701805775, -0.022789945318483006, 0.3213911971841485, 0.19384278246285155, 0.09589344325164954, -0.2567671752200486, -0.05389327338586251, 0.03454084625133337] |
708.3791 | Critical phenomena in a highly constrained classical spin system: Neel
ordering from the Coulomb phase | Many classical, geometrically frustrated antiferromagnets have
macroscopically degenerate ground states. In a class of three-dimensional
systems, the set of degenerate ground states has power-law correlations and is
an example of a Coulomb phase. We investigate Neel ordering from such a Coulomb
phase, induced by weak additional interactions that lift the degeneracy. We
show that the critical point belongs to a universality class that is different
from the one for the equivalent transition out of the paramagnetic phase, and
that it is characterised by effective long-range interactions; alternatively,
ordering may be discontinuous. We suggest that a transition of this type may be
realised by applying uniaxial stress to a pyrochlore antiferromagnet.
| cond-mat.stat-mech cond-mat.str-el | many classical geometrically frustrated antiferromagnets have macroscopically degenerate ground states in a class of threedimensional systems the set of degenerate ground states has powerlaw correlations and is an example of a coulomb phase we investigate neel ordering from such a coulomb phase induced by weak additional interactions that lift the degeneracy we show that the critical point belongs to a universality class that is different from the one for the equivalent transition out of the paramagnetic phase and that it is characterised by effective longrange interactions alternatively ordering may be discontinuous we suggest that a transition of this type may be realised by applying uniaxial stress to a pyrochlore antiferromagnet | [['many', 'classical', 'geometrically', 'frustrated', 'antiferromagnets', 'have', 'macroscopically', 'degenerate', 'ground', 'states', 'in', 'a', 'class', 'of', 'threedimensional', 'systems', 'the', 'set', 'of', 'degenerate', 'ground', 'states', 'has', 'powerlaw', 'correlations', 'and', 'is', 'an', 'example', 'of', 'a', 'coulomb', 'phase', 'we', 'investigate', 'neel', 'ordering', 'from', 'such', 'a', 'coulomb', 'phase', 'induced', 'by', 'weak', 'additional', 'interactions', 'that', 'lift', 'the', 'degeneracy', 'we', 'show', 'that', 'the', 'critical', 'point', 'belongs', 'to', 'a', 'universality', 'class', 'that', 'is', 'different', 'from', 'the', 'one', 'for', 'the', 'equivalent', 'transition', 'out', 'of', 'the', 'paramagnetic', 'phase', 'and', 'that', 'it', 'is', 'characterised', 'by', 'effective', 'longrange', 'interactions', 'alternatively', 'ordering', 'may', 'be', 'discontinuous', 'we', 'suggest', 'that', 'a', 'transition', 'of', 'this', 'type', 'may', 'be', 'realised', 'by', 'applying', 'uniaxial', 'stress', 'to', 'a', 'pyrochlore', 'antiferromagnet']] | [-0.18058994280343707, 0.25459076650136425, -0.07129571319515393, 0.0775232547237961, -0.04438279147302224, -0.14892702969637783, 0.05901720244437456, 0.3635266762904146, -0.2870077873294411, -0.2395392092410475, 0.07620005660944364, -0.31359805046496064, -0.1566497829912061, 0.1253093940459869, 0.05993893692185256, -0.008623997956006364, 0.007086656217209318, -0.00043374392288652333, -0.12046070124236972, -0.16767153567211193, 0.3578892568337985, -0.06657210340158186, 0.2705963766371662, 0.04279291385530748, 0.06798979159952565, -0.028043604172258214, 0.1848770104475658, 0.09257632430050183, -0.11631124594879855, 0.02589422605021603, 0.2390340668064627, -0.036149540657854896, 0.1972878522662954, -0.37610118343410165, -0.23249117955565451, 0.14012809045697477, 0.1267298292453316, 0.15721373045817016, -0.05574640497903932, -0.32184136664410207, 0.025389370273015546, -0.18916218076747926, -0.13774038322100585, -0.13950659002770077, -0.02750288356434215, 0.004273903183639049, -0.28116066834296694, 0.11085477130016608, 0.12442430328069763, 0.08154393352398819, -0.06224177886139263, -0.07358074537901715, -0.06828084582335908, 0.07847858589481224, 0.03315313487017358, 0.06889401436360044, 0.06890017323788594, -0.1277891258984296, -0.13621835395355117, 0.3931681598621336, -0.0324237655763599, -0.12522118304940788, 0.20476728768130256, -0.1369003373065921, -0.13406357379122213, 0.1886067878116261, 0.10490956482667983, 0.08246859582776034, -0.1301467725160447, 0.09386626053495671, -0.035642957088368184, 0.16068123371726623, -0.01534763692285527, 0.0027710107790136877, 0.2774099824950099, 0.14418957815082237, 0.08414729854928076, 0.20748269553084603, -0.07886039553837194, -0.12517613995058294, -0.2698324102231047, -0.15276215327056972, -0.2653674165929922, 0.10112355406480757, -0.06393029432801996, -0.18555502483451908, 0.3625314545463136, 0.15046116696533068, 0.1884489049161361, -0.06196815346040901, 0.16214159743183038, 0.1042456384230966, 0.049707885230468075, 0.012420758105475794, 0.286272441227497, 0.12171573466833004, 0.04241908376782455, -0.23462657437829132, 0.06545044984668494, 0.07277272294106131] |
708.3792 | Gelfand-Dickey Algebra and Higher Spin Symmetries On $T^2=S^1\times S^1$ | We focus in this work to renew the interest in higher conformal spins
symmetries and their relations to quantum field theories and integrable models.
We consider the extension of the conformal Frappat et al. symmetries containing
the Virasoro and the Antoniadis et al. algebras as particular cases describing
geometrically special diffeomorphisms of the two dimensional torus $T^2$. We
show in a consistent way, and explicitly, how one can extract these generalized
symmetries from the Gelfand-Dickey algebra. The link with Liouville and Toda
conformal field theories is established and various important properties are
discussed.
| hep-th | we focus in this work to renew the interest in higher conformal spins symmetries and their relations to quantum field theories and integrable models we consider the extension of the conformal frappat et al symmetries containing the virasoro and the antoniadis et al algebras as particular cases describing geometrically special diffeomorphisms of the two dimensional torus t2 we show in a consistent way and explicitly how one can extract these generalized symmetries from the gelfanddickey algebra the link with liouville and toda conformal field theories is established and various important properties are discussed | [['we', 'focus', 'in', 'this', 'work', 'to', 'renew', 'the', 'interest', 'in', 'higher', 'conformal', 'spins', 'symmetries', 'and', 'their', 'relations', 'to', 'quantum', 'field', 'theories', 'and', 'integrable', 'models', 'we', 'consider', 'the', 'extension', 'of', 'the', 'conformal', 'frappat', 'et', 'al', 'symmetries', 'containing', 'the', 'virasoro', 'and', 'the', 'antoniadis', 'et', 'al', 'algebras', 'as', 'particular', 'cases', 'describing', 'geometrically', 'special', 'diffeomorphisms', 'of', 'the', 'two', 'dimensional', 'torus', 't2', 'we', 'show', 'in', 'a', 'consistent', 'way', 'and', 'explicitly', 'how', 'one', 'can', 'extract', 'these', 'generalized', 'symmetries', 'from', 'the', 'gelfanddickey', 'algebra', 'the', 'link', 'with', 'liouville', 'and', 'toda', 'conformal', 'field', 'theories', 'is', 'established', 'and', 'various', 'important', 'properties', 'are', 'discussed']] | [-0.1214084306569851, 0.12058582599274814, -0.019250426026385114, 0.08532525723516617, -0.11413938036117621, -0.1445746971749822, -0.07119578227613364, 0.32592811287664203, -0.2536754716471162, -0.2493084652106399, 0.10466371035917015, -0.2714590691612102, -0.2056559570811932, 0.15389646607471388, -0.08693629924622971, 0.04944148501786201, -0.04654496637901858, 0.03916458636218601, -0.13577090172886686, -0.28463359507377783, 0.35236987768676836, 0.017976864347355844, 0.27708532776602585, 0.014213702226381587, 0.10591090484724744, 0.01845633433549665, -0.017238486791029572, 0.011249259847061141, -0.19276315051272674, 0.11425215630847758, 0.2649685045337363, 0.051892904665968985, 0.13547126533787535, -0.42809461977373325, -0.21893735982113235, 0.06424801043012059, 0.15137915854575112, 0.12901264429092407, -0.030215858352755236, -0.2991225151345134, 0.006337999586400617, -0.1805446455938458, -0.17108571048542534, -0.09060314423708327, 0.029547083710381034, -0.02688740888286544, -0.2093760012547769, 0.0888755120407871, 0.12063873065230639, 0.08144487611507825, -0.0642446527591623, -0.05788182803308186, -0.09150407921507671, 0.1015923301861419, 0.05201618637732716, 0.0301183827990747, 0.07167154346572478, -0.12279314532695382, -0.17899422069224427, 0.36411963944809267, -0.022028229786488024, -0.2569675859185341, 0.19659806414299807, -0.13366179902779707, -0.25034730492726615, -0.006706263964904634, 0.11180653072812635, 0.13505062289439831, -0.12265256294251783, 0.20918276596880195, -0.08541318613266491, 0.04048465867020676, 0.06285822806049786, 0.03558965477302833, 0.2246639480581507, 0.04110881538160712, -0.01527922184069884, 0.144638963792797, 0.004832279423008795, -0.14706565389718415, -0.3499751918260818, -0.17148842510220635, -0.11103966056733676, 0.10710507508812715, -0.09621204533418083, -0.107086206290304, 0.4106129925779026, 0.16815727827871224, 0.18641969644079875, 0.04773362716411572, 0.15383986545645673, 0.11377889804071342, 0.10084623881646068, 0.08213036209243633, 0.19208531457242434, 0.23854484831225936, 0.03331864653686669, -0.20154182175326202, -0.10975387159977919, 0.17737755505115035] |
708.3793 | Low upper bounds of ideals | We show that there is a low T-upper bound for the class of K-trivial sets,
namely those which are weak from the point of view of algorithmic randomness.
This result is a special case of a more general characterization of ideals in
the T-degrees below 0' for which there is a low T-upper bound.
| math.LO | we show that there is a low tupper bound for the class of ktrivial sets namely those which are weak from the point of view of algorithmic randomness this result is a special case of a more general characterization of ideals in the tdegrees below 0 for which there is a low tupper bound | [['we', 'show', 'that', 'there', 'is', 'a', 'low', 'tupper', 'bound', 'for', 'the', 'class', 'of', 'ktrivial', 'sets', 'namely', 'those', 'which', 'are', 'weak', 'from', 'the', 'point', 'of', 'view', 'of', 'algorithmic', 'randomness', 'this', 'result', 'is', 'a', 'special', 'case', 'of', 'a', 'more', 'general', 'characterization', 'of', 'ideals', 'in', 'the', 'tdegrees', 'below', '0', 'for', 'which', 'there', 'is', 'a', 'low', 'tupper', 'bound']] | [-0.15231255999599355, 0.11892720183603606, -0.06708366668976422, 0.08641384375492497, -0.004305959257455367, -0.1477943854582197, 0.07680688306408108, 0.2923036878401378, -0.2606114186346531, -0.24813685816589673, 0.11165194275991042, -0.2717147739120882, -0.13748966674056817, 0.24485517254556124, -0.09289137759017495, -0.020452717486066075, 0.03484531497266495, 0.07529241530189537, -0.07032342314421428, -0.21315938733377546, 0.37716382192799225, -0.006115790948552906, 0.23869446749394796, 0.07718485985654143, 0.07851011388636422, -0.044438537552882476, 0.05141487927615361, 0.04294299970398534, -0.15564211008629328, 0.13417193066891073, 0.2733823907965759, 0.14653602310122466, 0.2942308190999166, -0.2955137215695291, -0.16715993329812334, 0.16729634201575844, 0.07329576368496385, 0.1376253180337613, -0.07650787241560328, -0.19188638932493357, 0.17895831361869877, -0.1269057181505662, -0.1267806024396054, -0.03733492562687903, 0.03857048899638203, 0.021301978461022646, -0.29944433103192525, 0.04450995487354274, 0.17231828568257251, 0.09514741062731394, -0.028744851634398383, -0.11553185045464351, -0.012565113885222742, 0.07736675102123113, 0.01883910769895422, 0.06192149503929716, 0.02734918434629744, -0.16040723959757192, -0.08205991031004573, 0.3753522808118811, -0.0437459150012934, -0.1834305504442386, 0.20605825056444924, -0.16904914992387002, -0.19935603568084398, 0.14274141850731917, 0.10343484767000982, 0.1650798734593785, -0.09117120033446348, 0.1383303009810471, -0.14694898471868825, 0.11912431111306672, 0.07996863213736775, 0.08178343669234617, 0.15550975051690946, 0.1479934687673483, 0.14156959827040444, 0.1689982542522111, -0.03970168328861583, -0.05383577022947512, -0.3485426478228479, -0.14393549281796264, -0.19092658152452335, 0.10199099640309248, -0.0982617325641496, -0.19715081035809698, 0.3336556415723742, 0.10158502008273916, 0.19067078917550873, 0.09690935219602906, 0.24782477937779337, 0.12855778288377342, 0.006466791947495262, 0.08919147928333226, 0.22595538177861357, 0.11195862094678406, 0.0018887722706597931, -0.07777091205770255, 0.06014610344614341, 0.0735213516701786] |
708.3794 | Time-optimal control of a two-level dissipative quantum system | We propose an analysis of the time-optimal control of a dissipative two-level
quantum system whose dynamics is governed by the Lindblad equation. This simple
system allows one to use tools of geometric control theory and to construct its
optimal synthesis, i.e. to determine the set of all the optimal trajectories
starting from a given initial point. We study different processes such as
conversion of a pure state into a mixed state and purification of a mixed
state. In particular cases, we show that dissipation is not undesirable and can
help accelerating the control.
| quant-ph | we propose an analysis of the timeoptimal control of a dissipative twolevel quantum system whose dynamics is governed by the lindblad equation this simple system allows one to use tools of geometric control theory and to construct its optimal synthesis ie to determine the set of all the optimal trajectories starting from a given initial point we study different processes such as conversion of a pure state into a mixed state and purification of a mixed state in particular cases we show that dissipation is not undesirable and can help accelerating the control | [['we', 'propose', 'an', 'analysis', 'of', 'the', 'timeoptimal', 'control', 'of', 'a', 'dissipative', 'twolevel', 'quantum', 'system', 'whose', 'dynamics', 'is', 'governed', 'by', 'the', 'lindblad', 'equation', 'this', 'simple', 'system', 'allows', 'one', 'to', 'use', 'tools', 'of', 'geometric', 'control', 'theory', 'and', 'to', 'construct', 'its', 'optimal', 'synthesis', 'ie', 'to', 'determine', 'the', 'set', 'of', 'all', 'the', 'optimal', 'trajectories', 'starting', 'from', 'a', 'given', 'initial', 'point', 'we', 'study', 'different', 'processes', 'such', 'as', 'conversion', 'of', 'a', 'pure', 'state', 'into', 'a', 'mixed', 'state', 'and', 'purification', 'of', 'a', 'mixed', 'state', 'in', 'particular', 'cases', 'we', 'show', 'that', 'dissipation', 'is', 'not', 'undesirable', 'and', 'can', 'help', 'accelerating', 'the', 'control']] | [-0.124655263974101, 0.11488970557008044, -0.11807614087217277, 0.023921434338184534, -0.03728251397028886, -0.1526268393662508, 0.05128629835853253, 0.31632880187563356, -0.3273114586919947, -0.2662670920322579, 0.11981393976051921, -0.22937752857008795, -0.1366804893859612, 0.20139868923973653, -0.06599507679516871, 0.09262103214547018, 0.046124343680197834, 0.030930876005841518, -0.06098367239008107, -0.15557512556833605, 0.34960646994452005, 0.003948953757513194, 0.2567386059616242, -0.0253844314532715, 0.16670226881540912, 0.016901214416789753, 0.05027315505750237, 0.003461411672340605, -0.13024772448652683, 0.11338527178672213, 0.23707434900545626, 0.15154106614570464, 0.2851811213167234, -0.44030136162395117, -0.205569794651882, 0.11398888782908519, 0.12628109469228693, 0.19323994332714187, -0.04851079402711763, -0.24659536228144682, 0.05812820147282334, -0.1672018163146511, -0.15225698179014588, -0.10042659497208974, -0.01706081088031492, 0.004768499561275045, -0.2905162367218685, 0.01621659437034239, 0.08105651499272915, 0.000840982772730371, -0.09980238544171356, -0.04502200765625363, -0.020089043952744974, 0.1705427435427023, -0.06740433144913886, -0.017677101384227473, 0.14546656430829116, -0.12697973459087794, -0.14216486733126385, 0.3749561982369551, -0.06792327327032883, -0.2233607930241413, 0.2026131652816329, -0.09614664035278463, -0.08987848795649986, 0.10537549064204257, 0.18620183609766505, 0.1434505639212226, -0.18535001640037824, 0.0605585259036161, -0.013205062447776717, 0.17950382624578823, 0.004795610914707825, 0.031226793749718575, 0.1698818902224703, 0.1722504269627113, 0.10988752253889357, 0.19539942470709643, -0.018335378884027403, -0.17012104234327713, -0.3370634820512546, -0.16896051155298106, -0.15368400208566899, 0.1099094724351783, -0.04023423271647389, -0.18153792099967117, 0.40846961193407577, 0.14649406058954134, 0.1676889945582677, -0.004525519048755047, 0.2668494297171472, 0.1702380831259796, -0.02606361864575295, 0.07970222781702715, 0.20683508558619407, 0.11636655881089629, 0.05215354860379731, -0.30192255534942675, 0.0584288996504119, 0.02920729514732156] |
708.3795 | White dwarf atmosphere models with Ly-$\alpha$ opacity in the analysis
of the white dwarf cooling sequence of NGC 6397 | We discuss the importance of pure hydrogen white dwarf atmosphere models with
Ly-$\rm \alpha$ far red wing opacity in the analysis of the white dwarf cooling
sequence of the globular cluster NGC 6397. Our recently improved atmosphere
models account for the previously missing opacity from the Ly-$\rm \alpha$
hydrogen line broadened by collisions of the absorbing hydrogen atoms with
molecular and atomic hydrogen. These models are the first that well reproduce
the UV colors and spectral energy distributions of cool white dwarfs with
$T_{\rm eff}<6000 \rm K$ observed in the Galactic Disk. Fitting the observed
$F814W$ magnitude and $F606W-F814W$ color we obtained a value for the true
distance modulus, $\mu=12.00 \pm 0.02$, that is in agreement with recent
analyses. We show that the stars at the end of the cooling sequence appear to
be $\rm \sim 160 K$ cooler when models that account for Ly-$\rm \alpha$ opacity
are used. This indicates that the age of NGC 6397 derived from the white dwarf
cooling sequence using atmosphere models that do not include the correct
Ly-$\alpha$ opacity is underestimated by $\sim 0.5$ Gyr. Our analysis shows
that it is essential to use white dwarf atmosphere models with Ly-$\rm \alpha$
opacity for precise dating of old stellar populations from white dwarf cooling
sequences.
| astro-ph | we discuss the importance of pure hydrogen white dwarf atmosphere models with lyrm alpha far red wing opacity in the analysis of the white dwarf cooling sequence of the globular cluster ngc 6397 our recently improved atmosphere models account for the previously missing opacity from the lyrm alpha hydrogen line broadened by collisions of the absorbing hydrogen atoms with molecular and atomic hydrogen these models are the first that well reproduce the uv colors and spectral energy distributions of cool white dwarfs with t_rm eff6000 rm k observed in the galactic disk fitting the observed f814w magnitude and f606wf814w color we obtained a value for the true distance modulus mu1200 pm 002 that is in agreement with recent analyses we show that the stars at the end of the cooling sequence appear to be rm sim 160 k cooler when models that account for lyrm alpha opacity are used this indicates that the age of ngc 6397 derived from the white dwarf cooling sequence using atmosphere models that do not include the correct lyalpha opacity is underestimated by sim 05 gyr our analysis shows that it is essential to use white dwarf atmosphere models with lyrm alpha opacity for precise dating of old stellar populations from white dwarf cooling sequences | [['we', 'discuss', 'the', 'importance', 'of', 'pure', 'hydrogen', 'white', 'dwarf', 'atmosphere', 'models', 'with', 'lyrm', 'alpha', 'far', 'red', 'wing', 'opacity', 'in', 'the', 'analysis', 'of', 'the', 'white', 'dwarf', 'cooling', 'sequence', 'of', 'the', 'globular', 'cluster', 'ngc', '6397', 'our', 'recently', 'improved', 'atmosphere', 'models', 'account', 'for', 'the', 'previously', 'missing', 'opacity', 'from', 'the', 'lyrm', 'alpha', 'hydrogen', 'line', 'broadened', 'by', 'collisions', 'of', 'the', 'absorbing', 'hydrogen', 'atoms', 'with', 'molecular', 'and', 'atomic', 'hydrogen', 'these', 'models', 'are', 'the', 'first', 'that', 'well', 'reproduce', 'the', 'uv', 'colors', 'and', 'spectral', 'energy', 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708.3796 | Embedding Population Dynamics Models in Inference | Increasing pressures on the environment are generating an ever-increasing
need to manage animal and plant populations sustainably, and to protect and
rebuild endangered populations. Effective management requires reliable
mathematical models, so that the effects of management action can be predicted,
and the uncertainty in these predictions quantified. These models must be able
to predict the response of populations to anthropogenic change, while handling
the major sources of uncertainty. We describe a simple ``building block''
approach to formulating discrete-time models. We show how to estimate the
parameters of such models from time series of data, and how to quantify
uncertainty in those estimates and in numbers of individuals of different types
in populations, using computer-intensive Bayesian methods. We also discuss
advantages and pitfalls of the approach, and give an example using the British
grey seal population.
| stat.ME | increasing pressures on the environment are generating an everincreasing need to manage animal and plant populations sustainably and to protect and rebuild endangered populations effective management requires reliable mathematical models so that the effects of management action can be predicted and the uncertainty in these predictions quantified these models must be able to predict the response of populations to anthropogenic change while handling the major sources of uncertainty we describe a simple building block approach to formulating discretetime models we show how to estimate the parameters of such models from time series of data and how to quantify uncertainty in those estimates and in numbers of individuals of different types in populations using computerintensive bayesian methods we also discuss advantages and pitfalls of the approach and give an example using the british grey seal population | [['increasing', 'pressures', 'on', 'the', 'environment', 'are', 'generating', 'an', 'everincreasing', 'need', 'to', 'manage', 'animal', 'and', 'plant', 'populations', 'sustainably', 'and', 'to', 'protect', 'and', 'rebuild', 'endangered', 'populations', 'effective', 'management', 'requires', 'reliable', 'mathematical', 'models', 'so', 'that', 'the', 'effects', 'of', 'management', 'action', 'can', 'be', 'predicted', 'and', 'the', 'uncertainty', 'in', 'these', 'predictions', 'quantified', 'these', 'models', 'must', 'be', 'able', 'to', 'predict', 'the', 'response', 'of', 'populations', 'to', 'anthropogenic', 'change', 'while', 'handling', 'the', 'major', 'sources', 'of', 'uncertainty', 'we', 'describe', 'a', 'simple', 'building', 'block', 'approach', 'to', 'formulating', 'discretetime', 'models', 'we', 'show', 'how', 'to', 'estimate', 'the', 'parameters', 'of', 'such', 'models', 'from', 'time', 'series', 'of', 'data', 'and', 'how', 'to', 'quantify', 'uncertainty', 'in', 'those', 'estimates', 'and', 'in', 'numbers', 'of', 'individuals', 'of', 'different', 'types', 'in', 'populations', 'using', 'computerintensive', 'bayesian', 'methods', 'we', 'also', 'discuss', 'advantages', 'and', 'pitfalls', 'of', 'the', 'approach', 'and', 'give', 'an', 'example', 'using', 'the', 'british', 'grey', 'seal', 'population']] | [-0.03277103097212535, 0.0880163983633759, -0.093299765671017, 0.11907130950925487, -0.06471479580979105, -0.11766628807548571, 0.07632043742298804, 0.37736702967711067, -0.2752626745927113, -0.3649433513206464, 0.12421442214399576, -0.2743691477683131, -0.1461049998407597, 0.18116298648356288, -0.14207385499375286, 0.03348152798221067, 0.04300858595632707, -0.023031939776545322, -0.001535332794473679, -0.23999026773704424, 0.2851000218979876, 0.06285454071713266, 0.2869539091432536, 0.013169135315412724, 0.10861392028164119, -0.041324990911892165, -0.06377153977820718, 0.007282453775405884, -0.10387844207844292, 0.16184280845509083, 0.2959996618137531, 0.18886332035202671, 0.28838352434061193, -0.48236294587453205, -0.234578547830245, 0.14425545028859266, 0.14145663911821665, 0.15202229471480544, -0.009730204730294645, -0.26522795517273523, 0.046322011743042686, -0.21463325200947347, -0.1463461713106544, -0.10770575759794425, 0.009446109672663388, 0.040117959394895784, -0.26514390570422014, 0.06454601912215972, -0.013006071867076335, 0.07993630859655915, -0.08218276005031334, -0.1205341541527391, -0.033366053930863185, 0.2195384971142091, 0.06736270652187092, -0.0637485742551723, 0.157677917353188, -0.13110030087188568, -0.1230112379865238, 0.3809177208001967, -0.04024882773282351, -0.1929489467844919, 0.20842102275454197, -0.09752156570622766, -0.1454086882387788, 0.04636245737438677, 0.250985956205814, 0.049077188842757434, -0.18974452203277636, -0.015006883734733694, 0.04446614768218111, 0.17698845439073113, 0.007277529067532332, 0.00131315589123578, 0.21158420811579734, 0.17990067201511314, 0.014174454704065014, 0.10198644020387695, -0.07898582567943743, -0.10509630697951824, -0.2259104122304254, -0.11010106301831979, -0.09216001473746642, 0.0184383282955322, -0.0789408608848505, -0.14229598499239526, 0.36783510112652074, 0.2514616166034506, 0.16101804182916465, 0.0704090749370624, 0.30875753914523457, 0.08871078629529587, 0.07851962307123123, 0.05987609526211465, 0.16715437843619535, 0.07789102571119588, 0.04777516825986957, -0.21183762465327702, 0.12210884364666762, -0.019132346647826058] |
708.3797 | A General Framework for the Parametrization of Hierarchical Models | In this paper, we describe centering and noncentering methodology as
complementary techniques for use in parametrization of broad classes of
hierarchical models, with a view to the construction of effective MCMC
algorithms for exploring posterior distributions from these models. We give a
clear qualitative understanding as to when centering and noncentering work
well, and introduce theory concerning the convergence time complexity of Gibbs
samplers using centered and noncentered parametrizations. We give general
recipes for the construction of noncentered parametrizations, including an
auxiliary variable technique called the state-space expansion technique. We
also describe partially noncentered methods, and demonstrate their use in
constructing robust Gibbs sampler algorithms whose convergence properties are
not overly sensitive to the data.
| stat.ME | in this paper we describe centering and noncentering methodology as complementary techniques for use in parametrization of broad classes of hierarchical models with a view to the construction of effective mcmc algorithms for exploring posterior distributions from these models we give a clear qualitative understanding as to when centering and noncentering work well and introduce theory concerning the convergence time complexity of gibbs samplers using centered and noncentered parametrizations we give general recipes for the construction of noncentered parametrizations including an auxiliary variable technique called the statespace expansion technique we also describe partially noncentered methods and demonstrate their use in constructing robust gibbs sampler algorithms whose convergence properties are not overly sensitive to the data | [['in', 'this', 'paper', 'we', 'describe', 'centering', 'and', 'noncentering', 'methodology', 'as', 'complementary', 'techniques', 'for', 'use', 'in', 'parametrization', 'of', 'broad', 'classes', 'of', 'hierarchical', 'models', 'with', 'a', 'view', 'to', 'the', 'construction', 'of', 'effective', 'mcmc', 'algorithms', 'for', 'exploring', 'posterior', 'distributions', 'from', 'these', 'models', 'we', 'give', 'a', 'clear', 'qualitative', 'understanding', 'as', 'to', 'when', 'centering', 'and', 'noncentering', 'work', 'well', 'and', 'introduce', 'theory', 'concerning', 'the', 'convergence', 'time', 'complexity', 'of', 'gibbs', 'samplers', 'using', 'centered', 'and', 'noncentered', 'parametrizations', 'we', 'give', 'general', 'recipes', 'for', 'the', 'construction', 'of', 'noncentered', 'parametrizations', 'including', 'an', 'auxiliary', 'variable', 'technique', 'called', 'the', 'statespace', 'expansion', 'technique', 'we', 'also', 'describe', 'partially', 'noncentered', 'methods', 'and', 'demonstrate', 'their', 'use', 'in', 'constructing', 'robust', 'gibbs', 'sampler', 'algorithms', 'whose', 'convergence', 'properties', 'are', 'not', 'overly', 'sensitive', 'to', 'the', 'data']] | [0.01290178520442999, 0.04539426818968344, -0.1497910213049339, 0.12085403588134795, -0.06634266667229974, -0.14482975692852684, 0.060394837212262915, 0.45318430935883003, -0.27166117733197653, -0.30714409139169296, 0.1080246037489775, -0.18656500115909655, -0.15494478129498337, 0.20580397062003614, -0.10329391240425732, 0.07792088103318667, 0.07392101433614026, -0.05252249669283628, -0.12233885145624694, -0.2353683843145795, 0.3159143160623701, 0.06406341782244651, 0.2793967549729606, -0.012562540521764236, 0.14437502340069447, 0.03314421274699271, -0.07996982534456512, -0.0004683581788254821, -0.20961657300510483, 0.15593543330247958, 0.24478974882190613, 0.1975259232942177, 0.2669507809428741, -0.3593063613906017, -0.18086946275763457, 0.13423635843412385, 0.15196000465151407, 0.14537780885584653, -0.04361939437525428, -0.2548195599051921, 0.027446333974923777, -0.15809825781894768, -0.15160503717665763, -0.2164871324420623, -0.07769355520444071, 0.07646697327170683, -0.29341009194841206, 0.06261226795259459, 0.09371096790343036, 0.07049561086232248, -0.04056826456976326, -0.15048349098727593, 0.06659731713083128, 0.07125599600055822, 0.0443285491368126, -0.02355069774000541, 0.07568612283743593, -0.09511851651148627, -0.13443388803254652, 0.33194117181144817, -0.04805437219126717, -0.2251970655163345, 0.19939532663835133, -0.06516355459942766, -0.207460039983625, 0.07172100792193542, 0.2070722505860233, 0.14506689029057387, -0.17516737474880242, 0.09927227751139309, 0.005858605129279844, 0.08960431825936488, 0.02941474744483181, 0.023734917854586535, 0.14056076703431167, 0.16619915052560036, 0.07735303301445168, 0.13822463152363249, -0.08026847955973251, -0.13005507094380647, -0.3046019239705461, -0.11177434472255814, -0.17188799573594463, -0.0012626919590453009, -0.13350727573459786, -0.24608737925148527, 0.38793052690832514, 0.21165997049285343, 0.21807801502189883, 0.11444920619706744, 0.28790504276428536, 0.07262068589359684, 0.021227252222192676, 0.07759608424309156, 0.12375528105514368, 0.1521281625468122, 0.05611283000882553, -0.12448159763690732, 0.08258835430024192, 0.08975993062814941] |
708.3798 | Impedance-matched Hyperlens | We propose an approach to optical imaging beyond the diffraction limit, based
on transformation optics in concentric circular cylinder domains. The resulting
systems allow image magnification and minimize reflection losses due to the
impedance matching at the input or output boundaries. While perfect impedance
matching at both surfaces can only be obtained in a system with
radius-dependent magnetic permeability, we demonstrate that comparable
performance can be achieved in an optimized non-magnetic design.
| physics.optics | we propose an approach to optical imaging beyond the diffraction limit based on transformation optics in concentric circular cylinder domains the resulting systems allow image magnification and minimize reflection losses due to the impedance matching at the input or output boundaries while perfect impedance matching at both surfaces can only be obtained in a system with radiusdependent magnetic permeability we demonstrate that comparable performance can be achieved in an optimized nonmagnetic design | [['we', 'propose', 'an', 'approach', 'to', 'optical', 'imaging', 'beyond', 'the', 'diffraction', 'limit', 'based', 'on', 'transformation', 'optics', 'in', 'concentric', 'circular', 'cylinder', 'domains', 'the', 'resulting', 'systems', 'allow', 'image', 'magnification', 'and', 'minimize', 'reflection', 'losses', 'due', 'to', 'the', 'impedance', 'matching', 'at', 'the', 'input', 'or', 'output', 'boundaries', 'while', 'perfect', 'impedance', 'matching', 'at', 'both', 'surfaces', 'can', 'only', 'be', 'obtained', 'in', 'a', 'system', 'with', 'radiusdependent', 'magnetic', 'permeability', 'we', 'demonstrate', 'that', 'comparable', 'performance', 'can', 'be', 'achieved', 'in', 'an', 'optimized', 'nonmagnetic', 'design']] | [-0.1019739087140705, 0.06040527115086055, -0.04936230282247481, -0.014398008979494788, -0.07010241476301518, -0.13682451403130674, -0.0008072536826754609, 0.48722872231155634, -0.2724987624601959, -0.33170004992280155, 0.09910523333827667, -0.26632662231309545, -0.1257837214636513, 0.22864665904974876, -0.11302023218660098, 0.10842502575057249, 0.05809646912126078, 0.00021146633015531633, -0.07729304968314762, -0.20216699286215267, 0.2630347115142892, 0.04054779947424928, 0.34410607821256334, 0.04373127543496796, 0.10219994266905512, 0.03983214741715023, 0.07508547984374066, 0.07884875294338498, -0.07946354550838602, 0.07882832650405665, 0.24865353309562327, 0.018738005666010495, 0.17228788046243912, -0.4730887261426283, -0.21228307305783448, 0.029026982626722504, 0.151835091062013, 0.09873026213285306, -0.05228362325740616, -0.2563424213634183, 0.041378373377180346, -0.08255358653453489, -0.09232556821209276, -0.06766002589008874, -0.0813960040767496, -0.022226193396717362, -0.31595290209063226, 0.03765124443144588, 0.03857048262014157, 0.05420720670372248, -0.08307323165030943, -0.08372580910508987, 0.00292487780097872, 0.11162374758795421, -0.04795116216620146, 0.01200423423304326, 0.14498947430143339, -0.15285400130798937, -0.09599451887576531, 0.3863567682500515, -0.06456620824368049, -0.19931171681188667, 0.15933875265181996, -0.16359685711924815, 0.005092965426026947, 0.1847191248347776, 0.22190349078219798, 0.09181445727719822, -0.14488216418410754, 0.021929401644835405, 0.004250491859339591, 0.24110212358128694, 0.17779114253547354, 0.02052446996094659, 0.25507551412576707, 0.16773680485332282, 0.07816819351218227, 0.18286287358690365, -0.15030955887980074, 0.03222004402293047, -0.23350125591322365, -0.09931176140283544, -0.1890404990234755, -0.002498959812025229, -0.11554945154845579, -0.1865024303099037, 0.3098438654948647, 0.16903906987863593, 0.19064232036988768, 0.02206821988673053, 0.3744284223972095, 0.13615148756394369, 0.10945921287768418, 0.06903565905263855, 0.2898858898293434, 0.11763279511877853, 0.08811420602917981, -0.25619937853965286, 0.023537053442042735, 0.014771427609957755] |
708.3799 | Spatially nonuniform phases in the one-dimensional SU(n) Hubbard model
for commensurate fillings | The one-dimensional repulsive SU$(n)$ Hubbard model is investigated
analytically by bosonization approach and numerically using the density-matrix
renormalization-group (DMRG) method for $n=3,4$, and 5 for commensurate
fillings $f=p/q$ where $p$ and $q$ are relatively prime. It is shown that the
behavior of the system is drastically different depending on whether $q>n$,
$q=n$, or $q<n$. When $q>n$, the umklapp processes are irrelevant, the model is
equivalent to an $n$-component Luttinger liquid with central charge $c=n$. When
$q=n$, the charge and spin modes are decoupled, the umklapp processes open a
charge gap for finite $U>0$, whereas the spin modes remain gapless and the
central charge $c=n-1$. The translational symmetry is not broken in the ground
state for any $n$. On the other hand, when $q<n$, the charge and spin modes are
coupled, the umklapp processes open gaps in all excitation branches, and a
spatially nonuniform ground state develops. Bond-ordered dimerized, trimerized
or tetramerized phases are found depending on the filling.
| cond-mat.str-el | the onedimensional repulsive sun hubbard model is investigated analytically by bosonization approach and numerically using the densitymatrix renormalizationgroup dmrg method for n34 and 5 for commensurate fillings fpq where p and q are relatively prime it is shown that the behavior of the system is drastically different depending on whether qn qn or qn when qn the umklapp processes are irrelevant the model is equivalent to an ncomponent luttinger liquid with central charge cn when qn the charge and spin modes are decoupled the umklapp processes open a charge gap for finite u0 whereas the spin modes remain gapless and the central charge cn1 the translational symmetry is not broken in the ground state for any n on the other hand when qn the charge and spin modes are coupled the umklapp processes open gaps in all excitation branches and a spatially nonuniform ground state develops bondordered dimerized trimerized or tetramerized phases are found depending on the filling | [['the', 'onedimensional', 'repulsive', 'sun', 'hubbard', 'model', 'is', 'investigated', 'analytically', 'by', 'bosonization', 'approach', 'and', 'numerically', 'using', 'the', 'densitymatrix', 'renormalizationgroup', 'dmrg', 'method', 'for', 'n34', 'and', '5', 'for', 'commensurate', 'fillings', 'fpq', 'where', 'p', 'and', 'q', 'are', 'relatively', 'prime', 'it', 'is', 'shown', 'that', 'the', 'behavior', 'of', 'the', 'system', 'is', 'drastically', 'different', 'depending', 'on', 'whether', 'qn', 'qn', 'or', 'qn', 'when', 'qn', 'the', 'umklapp', 'processes', 'are', 'irrelevant', 'the', 'model', 'is', 'equivalent', 'to', 'an', 'ncomponent', 'luttinger', 'liquid', 'with', 'central', 'charge', 'cn', 'when', 'qn', 'the', 'charge', 'and', 'spin', 'modes', 'are', 'decoupled', 'the', 'umklapp', 'processes', 'open', 'a', 'charge', 'gap', 'for', 'finite', 'u0', 'whereas', 'the', 'spin', 'modes', 'remain', 'gapless', 'and', 'the', 'central', 'charge', 'cn1', 'the', 'translational', 'symmetry', 'is', 'not', 'broken', 'in', 'the', 'ground', 'state', 'for', 'any', 'n', 'on', 'the', 'other', 'hand', 'when', 'qn', 'the', 'charge', 'and', 'spin', 'modes', 'are', 'coupled', 'the', 'umklapp', 'processes', 'open', 'gaps', 'in', 'all', 'excitation', 'branches', 'and', 'a', 'spatially', 'nonuniform', 'ground', 'state', 'develops', 'bondordered', 'dimerized', 'trimerized', 'or', 'tetramerized', 'phases', 'are', 'found', 'depending', 'on', 'the', 'filling']] | [-0.20266147494489986, 0.2726370350538224, -0.014423849243583023, 0.0661358826335437, -0.003347412498868247, -0.2319823526777327, 0.034104031156984314, 0.3573696809184231, -0.253900355906992, -0.19372127372241002, 0.08060552187328804, -0.3351960196005051, -0.08063066320028156, 0.11936144270482686, 0.08104176500434929, -0.005955051476006172, -0.022353750278899163, 0.0637712166924619, -0.10063462141942515, -0.222319653935589, 0.31557179653215445, -0.05808604607075642, 0.28064060670359037, 0.08196657562121466, 0.007459646977242554, 0.03485914998057098, 0.12900294122415817, -0.03969842256076304, -0.1383722046071231, -0.006407711410281967, 0.26223993965253656, -0.0752333047758505, 0.15690700068209273, -0.4463078265927166, -0.1773361415908778, 0.04624419416967025, 0.20562558108056553, 0.1289922788244071, -0.001226732754178015, -0.30349409758243, 0.04214839843585144, -0.18773817695099623, -0.16580754125054595, -0.08589915089350476, 0.051051562528208465, -0.009303105697573658, -0.2643931854716679, 0.12146212758873648, 0.0853873751143913, 0.03162946048210363, -0.0922616696341812, -0.13847588926267845, -0.09610347881842451, 0.07677026953134845, 0.052615046460704425, 0.047674721638492276, 0.0940297449168254, -0.1391610901197124, -0.07937525809577466, 0.35430588431161225, 0.006830420069502596, -0.210437040686124, 0.195191568170403, -0.1891756900601845, -0.07874687281628788, 0.17404209095925752, 0.05320031568555374, 0.09299674985894957, -0.08663718437448459, 0.17310596463274905, -0.01653082964093059, 0.17665391601898406, 0.013605541552570237, 0.03878700490628334, 0.21194769474427227, 0.1503427000764221, 0.05836050154028248, 0.10723836946962814, -0.09289716881747016, -0.11203123022407246, -0.2741294653815088, -0.12741899660558592, -0.22976543983706874, 0.06200522038788325, -0.08410556750201481, -0.15551882945174275, 0.38096671374337865, 0.08387454914716014, 0.1579644481424549, -0.012465117186826618, 0.22730283535533596, 0.16196432865454663, 0.02035099788439236, 0.09781773140966374, 0.17946373310111038, 0.1484683020772778, 0.018392658419612372, -0.315982442290251, -0.007497254744337141, 0.09199057034617644] |
708.38 | Coupled quintessence and vacuum decay | We discuss observational consequences of a class of cosmological models
characterized by the dilution of pressureless matter attenuated with respect to
the usual $a^{-3}$ scaling due to the decay of vacuum energy. We carry out a
joint statistical analysis of observational data from the new \emph{gold}
sample of 182 SNe Ia, recent estimates of the CMB shift parameter, and BAO
measurements from the SDSS to show that such models favor the decay of vacuum
only into the dark matter sector, and that the separately conserved baryons
cannot be neglected. In order to explore ways to more fundamentally motivated
models, we also derive a coupled scalar field version for this general class of
vacuum decay scenarios.
| astro-ph | we discuss observational consequences of a class of cosmological models characterized by the dilution of pressureless matter attenuated with respect to the usual a3 scaling due to the decay of vacuum energy we carry out a joint statistical analysis of observational data from the new emphgold sample of 182 sne ia recent estimates of the cmb shift parameter and bao measurements from the sdss to show that such models favor the decay of vacuum only into the dark matter sector and that the separately conserved baryons cannot be neglected in order to explore ways to more fundamentally motivated models we also derive a coupled scalar field version for this general class of vacuum decay scenarios | [['we', 'discuss', 'observational', 'consequences', 'of', 'a', 'class', 'of', 'cosmological', 'models', 'characterized', 'by', 'the', 'dilution', 'of', 'pressureless', 'matter', 'attenuated', 'with', 'respect', 'to', 'the', 'usual', 'a3', 'scaling', 'due', 'to', 'the', 'decay', 'of', 'vacuum', 'energy', 'we', 'carry', 'out', 'a', 'joint', 'statistical', 'analysis', 'of', 'observational', 'data', 'from', 'the', 'new', 'emphgold', 'sample', 'of', '182', 'sne', 'ia', 'recent', 'estimates', 'of', 'the', 'cmb', 'shift', 'parameter', 'and', 'bao', 'measurements', 'from', 'the', 'sdss', 'to', 'show', 'that', 'such', 'models', 'favor', 'the', 'decay', 'of', 'vacuum', 'only', 'into', 'the', 'dark', 'matter', 'sector', 'and', 'that', 'the', 'separately', 'conserved', 'baryons', 'can', 'not', 'be', 'neglected', 'in', 'order', 'to', 'explore', 'ways', 'to', 'more', 'fundamentally', 'motivated', 'models', 'we', 'also', 'derive', 'a', 'coupled', 'scalar', 'field', 'version', 'for', 'this', 'general', 'class', 'of', 'vacuum', 'decay', 'scenarios']] | [-0.07139209469535453, 0.13468863545306797, -0.08363963899218702, 0.12366423389577338, -0.11151664704887261, -0.12474840740143353, 0.03879896949390592, 0.29282981671136, -0.2337648441517276, -0.29775453228674076, 0.04997741815670201, -0.2803951843625641, -0.035822575943994114, 0.1826062315958552, -0.0006170443074520806, 0.014412798854554522, 0.034764465875923634, -0.023461181188708748, -0.05991411416646864, -0.2529511482751896, 0.3661674705398237, 0.07010186983248347, 0.24338695773923094, -0.016488050367554713, 0.05321242559624932, -0.07264413968218363, -0.09410786726271156, 0.028727616815715385, -0.20166844096306233, 0.06613702887010857, 0.1669506268840921, 0.14116405125643158, 0.19205773716736263, -0.3969110437135833, -0.24841642153353014, 0.20740088704845, 0.16407569383014123, 0.16347696346527865, -0.05165118005406212, -0.3154832258948992, 0.05834541597066383, -0.19860029830757914, -0.1243459659765057, -0.07100172765986544, -0.031210406646252898, -0.00826607202480804, -0.2646959504696685, 0.14959753485540017, 0.005030153230924545, -0.015608531246282932, -0.09613453609676197, -0.11219661776076778, -0.015524671039672503, 0.016244119992640256, 0.13630898204503644, 0.00010286983311304758, 0.11432593986733239, -0.17093611526471594, -0.06040389976436112, 0.40432921352250306, -0.10311093951017468, -0.135173501719817, 0.14654205935999173, -0.15642198173987581, -0.16086581236971864, 0.08465041940357408, 0.16603824743149995, 0.07251915881201497, -0.15486348547635537, 0.08994739981878003, 0.00633269924959489, 0.18949582680240915, 0.030035768274282074, 0.06899548235202835, 0.27284397449794, 0.10941948825975173, 0.02501553965427367, 0.09913693933149575, -0.09218472804360349, -0.05628305762717179, -0.3589987961960764, -0.11783107661577905, -0.14087402382423972, 0.0911051906066483, -0.09784463078866448, -0.13406531674112995, 0.39135126133674175, 0.1429595680674538, 0.20198220137811812, 0.04408139447432718, 0.28802176038252897, 0.06505523846737624, 0.06835843270628489, 0.03440046294568235, 0.319903883264111, 0.15574868153258836, 0.10727210536374357, -0.22651067163779176, 0.0064514114105961575, 0.0034840656685289637] |
708.3801 | Heavy-quark production from Glauber-Gribov theory at LHC | We present predictions for heavy-quark production for proton-lead collisions
at LHC energy 5.5 TeV from Glauber-Gribov theory of nuclear shadowing. We have
also made predictions for baseline cold-matter (in other words inital-state)
nuclear effects in lead-lead collisions at the same energy that has to be taken
into account to understand properly final-state effects.
| hep-ph | we present predictions for heavyquark production for protonlead collisions at lhc energy 55 tev from glaubergribov theory of nuclear shadowing we have also made predictions for baseline coldmatter in other words initalstate nuclear effects in leadlead collisions at the same energy that has to be taken into account to understand properly finalstate effects | [['we', 'present', 'predictions', 'for', 'heavyquark', 'production', 'for', 'protonlead', 'collisions', 'at', 'lhc', 'energy', '55', 'tev', 'from', 'glaubergribov', 'theory', 'of', 'nuclear', 'shadowing', 'we', 'have', 'also', 'made', 'predictions', 'for', 'baseline', 'coldmatter', 'in', 'other', 'words', 'initalstate', 'nuclear', 'effects', 'in', 'leadlead', 'collisions', 'at', 'the', 'same', 'energy', 'that', 'has', 'to', 'be', 'taken', 'into', 'account', 'to', 'understand', 'properly', 'finalstate', 'effects']] | [0.02812958794061606, 0.21170384069795117, -0.2174702376930737, 0.22940230650790766, 0.012684288379900596, -0.0956334905589328, -0.09485015387911641, 0.4058750126072589, -0.1984202180276899, -0.274700397141643, -0.04987642876164732, -0.3791375952024086, 0.13391077845339097, 0.12536110718136506, 0.06211556223969834, 0.06471532992288179, 0.15815808175716037, -0.00436141089006674, -0.004031943408407125, -0.23219586276522308, 0.2796079678753135, 0.14805675186582057, 0.17509605835977138, 0.2435072017468366, 0.0598811510877282, 0.10869791042790108, -0.017069902356631833, 0.025231469769542124, -0.13128855167594214, 0.002139751900982696, 0.35462479892314647, 0.015282936859875917, 0.16436666367100736, -0.474490734401579, -0.1883712562677615, 0.13021516493138144, 0.11492782615709539, 0.1464801176414624, -0.07970784189106495, -0.2725369574538633, 0.1358247116828958, -0.30409108352500436, -0.1352160525343874, -0.05506061145341864, 0.04831473317508604, -0.02797979766539499, -0.30472524071057494, 0.07518041157106613, -0.06767756422506828, 0.05325129760118822, -0.05415403196935122, -0.23221032732330701, -0.02343393155537984, 0.05926243568241012, 0.10355892691615165, 0.06972733672306526, 0.17742164121192022, -0.1366316622862702, -0.16413284330537506, 0.41730432329224604, 0.005068352719878449, -0.1279099151747776, 0.17221936822741055, -0.20924176659215898, -0.21507325332940502, 0.14980378587657184, 0.3405673782724668, -0.029306875085275547, -0.24957146186965937, 0.04420722573516233, 0.039211152048379765, 0.1584037878669287, 0.06335470896652516, 0.13133452077597088, 0.15914193743511157, 0.21807679596046606, -0.07990805110346307, 0.051235247986601194, -0.12013328542896345, -0.08821630134594206, -0.404588127873984, 0.00027008482492437547, -0.04376760672997026, 0.03815997659922669, -0.06090997416051287, 0.03968707282169193, 0.33382717428692416, 0.16463010044147572, 0.26509907637156693, -0.011252039093889441, 0.2999821581202103, 0.06776972085821863, 0.09818186791723266, 0.10481712180098482, 0.3603341537071209, 0.12292373014212239, 0.15484060620998635, -0.2522383224282998, 0.0284190415404737, 0.05447689757919779] |
708.3802 | Unparticle physics in top pair signals at the LHC and ILC | We study the effects of unparticle physics in the pair productions of top
quarks at the LHC and ILC. By considering vector, tensor and scalar unparticle
operators, as appropriate, we compute the total cross sections for pair
production processes depending on scale dimension $d_{\U}$. We find that the
existence of unparticles would lead to measurable enhancements on the SM
predictions at the LHC. In the case of ILC this may become two orders of
magnitude larger than that of SM, for smaller values of $d_\U$, a very striking
signal for unparticles.
| hep-ph | we study the effects of unparticle physics in the pair productions of top quarks at the lhc and ilc by considering vector tensor and scalar unparticle operators as appropriate we compute the total cross sections for pair production processes depending on scale dimension d_u we find that the existence of unparticles would lead to measurable enhancements on the sm predictions at the lhc in the case of ilc this may become two orders of magnitude larger than that of sm for smaller values of d_u a very striking signal for unparticles | [['we', 'study', 'the', 'effects', 'of', 'unparticle', 'physics', 'in', 'the', 'pair', 'productions', 'of', 'top', 'quarks', 'at', 'the', 'lhc', 'and', 'ilc', 'by', 'considering', 'vector', 'tensor', 'and', 'scalar', 'unparticle', 'operators', 'as', 'appropriate', 'we', 'compute', 'the', 'total', 'cross', 'sections', 'for', 'pair', 'production', 'processes', 'depending', 'on', 'scale', 'dimension', 'd_u', 'we', 'find', 'that', 'the', 'existence', 'of', 'unparticles', 'would', 'lead', 'to', 'measurable', 'enhancements', 'on', 'the', 'sm', 'predictions', 'at', 'the', 'lhc', 'in', 'the', 'case', 'of', 'ilc', 'this', 'may', 'become', 'two', 'orders', 'of', 'magnitude', 'larger', 'than', 'that', 'of', 'sm', 'for', 'smaller', 'values', 'of', 'd_u', 'a', 'very', 'striking', 'signal', 'for', 'unparticles']] | [-0.10574087713957651, 0.25450584309298424, -0.04298736071111737, 0.176044123261338, -0.06632214072569795, -0.12977753194550481, -0.011139282746915962, 0.28193674281567005, -0.21145682691872775, -0.25549754965026955, -0.00975507205341953, -0.3618754359310145, -0.04639239954137868, 0.17475858556904963, 0.12120683735830116, 0.03560603772700063, 0.04722831576837452, 0.05248153129346914, -0.08296937587067157, -0.26038161554670597, 0.35611697286367416, 0.06577136427941886, 0.19811518914015083, 0.14452375036633605, 0.08376461411775141, 0.035486908189461125, -0.025864311030190847, -0.04325155395205941, -0.11170992416481278, 0.1217998308078437, 0.21047377116353874, 0.05829397449014033, 0.14285125316518543, -0.35181623779155397, -0.1231088990353273, 0.20883910671633843, 0.12093169412033243, 0.06967375293414999, -0.012660574477554842, -0.2704174671255584, 0.13682755620914747, -0.20564016044794858, -0.09910592775034545, -0.05450826965702268, 0.03718333775279941, -0.12501427369796067, -0.32647737574118835, 0.07035831653686998, -0.024982373178987712, 0.036565262059281976, -0.0052336244511285, -0.20613926458223672, -0.08527819901848069, -0.010819640405895701, 0.14756350422912573, 0.0006621544848063163, 0.18509786769972889, -0.22966056079399044, -0.19724602470363767, 0.3783597991146802, -0.15534475639511724, -0.20462887021866474, 0.202306649872808, -0.23673550811708793, -0.12883353325414246, 0.09387372144764024, 0.28972076874349145, 0.04708364607950488, -0.12280930558751736, 0.15013238811062055, 0.0038204871138537324, 0.1544146105150723, 0.10505533259832761, 0.11426989641040564, 0.19280334483770714, 0.1975579649046227, 0.1030376065870399, 0.07130365816692075, -0.05855442550555281, -0.06632650271058083, -0.4322397139455591, -0.14255457484050765, -0.08163645099541479, 0.05689440398978499, -0.1225972424135262, -0.08140830984108846, 0.3893275724693232, 0.17594049739584858, 0.28903396201517, 0.0025011623165682776, 0.26428426655807663, 0.12447885577285478, 0.13397190169748532, 0.0226809350149399, 0.3478208447878177, 0.09012217694576216, 0.12253930544542087, -0.1773587715080274, 0.042252424730827194, 0.09548843689876926] |
708.3803 | Multiplicity and cold-nuclear matter effects from Glauber-Gribov theory
at LHC | We present predictions for nuclear modification factor in proton-lead
collisions at LHC energy 5.5 TeV from Glauber-Gribov theory of nuclear
shadowing. We have also made predictions for baseline cold-matter nuclear
effects in lead-lead collisions at the same energy.
| hep-ph | we present predictions for nuclear modification factor in protonlead collisions at lhc energy 55 tev from glaubergribov theory of nuclear shadowing we have also made predictions for baseline coldmatter nuclear effects in leadlead collisions at the same energy | [['we', 'present', 'predictions', 'for', 'nuclear', 'modification', 'factor', 'in', 'protonlead', 'collisions', 'at', 'lhc', 'energy', '55', 'tev', 'from', 'glaubergribov', 'theory', 'of', 'nuclear', 'shadowing', 'we', 'have', 'also', 'made', 'predictions', 'for', 'baseline', 'coldmatter', 'nuclear', 'effects', 'in', 'leadlead', 'collisions', 'at', 'the', 'same', 'energy']] | [0.014745383208768593, 0.19094290347719514, -0.21384647184026404, 0.2186403149688566, 0.08585979079676641, -0.07630172232165933, -0.11293403574932567, 0.40067262348492405, -0.1879722907937862, -0.3165553754346596, -0.055892357898473334, -0.3762659672144297, 0.1438555746414774, 0.12217688233264394, 0.0953897170823168, 0.09401080737242827, 0.16479116775145805, 0.010835290156506203, -0.06803346515910046, -0.18856155438776556, 0.2730879999974088, 0.23120051403404088, 0.18361223763408693, 0.24494770876559857, 0.04686512181384338, 0.11232179350446204, -0.005132759241638957, 0.007441965410032788, -0.1697662995775809, 0.03379484972243223, 0.35671200643520096, -0.010224431967111054, 0.15489836872832194, -0.4546715636813157, -0.13513464571253672, 0.10623089226617201, 0.05858529975788819, 0.1640569341016581, -0.13416000471978978, -0.22746443451457732, 0.11222952455785629, -0.3626442080917391, -0.1880734408072926, -0.01962808086662679, 0.0318632673069432, -0.01463135563441225, -0.3000652062127719, 0.17016677429342666, -0.1127107485096801, 0.11694964635613803, -0.0598193827915836, -0.2666316357114025, 0.048128802505497996, -0.04642917998638507, 0.0540648106535947, 0.0781977613506889, 0.24726608536533407, -0.18240885306275575, -0.18344447180326726, 0.36483772099018097, -0.008745728110944902, -0.05467804498668458, 0.19055649731308222, -0.22369854227715247, -0.23798012490560477, 0.1544387552673249, 0.3396469439203675, 0.00013161123403020807, -0.22587460298342882, 0.061209276538795314, 0.026337406497348, 0.18084670150199453, 0.09766750921168037, 0.11437254945269308, 0.10162836217598335, 0.2569827444952082, -0.05428991300003553, 0.023363170390193526, -0.1548573767413964, -0.0902218460231214, -0.4500274473448863, 0.06881390869416096, -0.05567131022847182, 0.06354998562459808, -0.09782431677386567, 0.1104001543308432, 0.34632718844993693, 0.08821253710099168, 0.26950856942582774, -0.03532724676502717, 0.2651038101144336, 0.04085543072102843, 0.07084014631707121, 0.16593016487722462, 0.4106741092495016, 0.13391108327620738, 0.1930788326756777, -0.2575777056438194, 0.00010290874067593265, 0.04228195412134802] |
708.3804 | Free Quarks and Antiquarks versus Hadronic Matter | Meson-meson reactions A(q_1 \bar{q}_1) + B(q_2 \bar{q}_2) to q_1 + \bar{q}_1
+ q_2 + \bar{q}_2 in high-temperature hadronic matter are found to produce an
appreciable amount of quarks and antiquarks freely moving in hadronic matter
and to establish a new mechanism for deconfinement of quarks and antiquarks in
hadronic matter.
| hep-ph nucl-th | mesonmeson reactions aq_1 barq_1 bq_2 barq_2 to q_1 barq_1 q_2 barq_2 in hightemperature hadronic matter are found to produce an appreciable amount of quarks and antiquarks freely moving in hadronic matter and to establish a new mechanism for deconfinement of quarks and antiquarks in hadronic matter | [['mesonmeson', 'reactions', 'aq_1', 'barq_1', 'bq_2', 'barq_2', 'to', 'q_1', 'barq_1', 'q_2', 'barq_2', 'in', 'hightemperature', 'hadronic', 'matter', 'are', 'found', 'to', 'produce', 'an', 'appreciable', 'amount', 'of', 'quarks', 'and', 'antiquarks', 'freely', 'moving', 'in', 'hadronic', 'matter', 'and', 'to', 'establish', 'a', 'new', 'mechanism', 'for', 'deconfinement', 'of', 'quarks', 'and', 'antiquarks', 'in', 'hadronic', 'matter']] | [-0.08554480834440752, 0.43349160304040363, -0.14330251614393835, 0.13159150918099013, -0.06991881966082887, -0.12755066409326074, 0.049751668450798286, 0.3496741410344839, -0.16834301696243612, -0.21912550244649703, -0.1584685480841224, -0.32462833809073677, 0.11769386173479936, 0.0029794306240298533, 0.08455406114543704, 0.05961652826094492, 0.010808502387424762, 0.033289773178032854, -0.03496029983613302, -0.16969074432695794, 0.25633646632460033, -0.10723208170384169, 0.12710509161380204, 0.2218439233150672, 0.020891360007226467, -0.04230098257010633, -0.030434120446443558, -0.18921770578758282, -0.08275064261397347, -0.027500989465889605, 0.25772142524577, 0.005424394817303189, 0.034497250548817894, -0.41362871092066844, -0.166351680516858, 0.17217149913565002, 0.20089744309767743, 0.08313946061852304, -0.07040037974630567, -0.29873048700392246, 0.10143365073864433, -0.2804004117761823, -0.14187214896082878, -0.17640175816433673, 0.04193233250936663, -0.041051304433494806, -0.3455596742728217, 0.09963868819812144, -0.04146632975475355, -0.015095787302760238, -0.01822043600788509, -0.2562936209142208, -0.0688413300297477, -0.010158639126033946, 0.1440216080200943, 0.1428517611189322, 0.1655130472288213, -0.24196274706628174, -0.09919513853012839, 0.45600662067193876, 0.008340388726951047, -0.15312273034148596, 0.18168421987105499, -0.1467374323507432, -0.16004592086061498, 0.1547239659862085, 0.24990162130614574, 0.05376867723481899, -0.24061458589593795, 0.05679686130050951, 0.015517903364856134, 0.16924676798622718, 0.11819141697858206, 0.09054817346094007, 0.2810967940498482, 0.15353389325636355, -0.06351041862084954, 0.05964826479215513, 0.03879061806946993, -0.08159175601957197, -0.3526921489445323, -0.1424432061506774, -0.09835180290974677, 0.01094343711156398, -0.0800908178462123, -0.14239140913229098, 0.279294509969821, 0.0313935160044242, 0.1795773800801147, -0.12006666739894585, 0.27802588206461887, -0.043450632894581016, -0.00990770041773265, 0.15951470736829584, 0.2990401428700848, 0.23094166421585463, 0.1582005069040778, -0.27036022165239876, -0.05349947601048784, 0.12091966073917733] |
708.3805 | Moduli stabilization in heterotic M-theory | We reconsider the ingredients of moduli stabilization in heterotic M-theory.
On this line we close a gap in the literature deriving the Kaehler potential
dependence on vector bundle moduli and charged matter. Crucial in this
derivation is our superspace formulation of 5d heterotic M-theory taking into
account the Bianchi identities modified by brane terms. Likewise, we obtain the
Fayet-Iliopolous terms due to brane localised anomalous U(1)'s. After
assembling perturbative and non-perturbative contributions to the
superpotential, we study supersymmetric (adS) vacua. It is found that the susy
condition decouples the bundle moduli from the geometric moduli. We show that
M-theory supersymmetric vacua without five-branes can be found, albeit not at
phenomenologically interesting values of the geometric moduli. This result is
fairly independent of the choice of vector bundle at the observable brane.
| hep-th hep-ph | we reconsider the ingredients of moduli stabilization in heterotic mtheory on this line we close a gap in the literature deriving the kaehler potential dependence on vector bundle moduli and charged matter crucial in this derivation is our superspace formulation of 5d heterotic mtheory taking into account the bianchi identities modified by brane terms likewise we obtain the fayetiliopolous terms due to brane localised anomalous u1s after assembling perturbative and nonperturbative contributions to the superpotential we study supersymmetric ads vacua it is found that the susy condition decouples the bundle moduli from the geometric moduli we show that mtheory supersymmetric vacua without fivebranes can be found albeit not at phenomenologically interesting values of the geometric moduli this result is fairly independent of the choice of vector bundle at the observable brane | [['we', 'reconsider', 'the', 'ingredients', 'of', 'moduli', 'stabilization', 'in', 'heterotic', 'mtheory', 'on', 'this', 'line', 'we', 'close', 'a', 'gap', 'in', 'the', 'literature', 'deriving', 'the', 'kaehler', 'potential', 'dependence', 'on', 'vector', 'bundle', 'moduli', 'and', 'charged', 'matter', 'crucial', 'in', 'this', 'derivation', 'is', 'our', 'superspace', 'formulation', 'of', '5d', 'heterotic', 'mtheory', 'taking', 'into', 'account', 'the', 'bianchi', 'identities', 'modified', 'by', 'brane', 'terms', 'likewise', 'we', 'obtain', 'the', 'fayetiliopolous', 'terms', 'due', 'to', 'brane', 'localised', 'anomalous', 'u1s', 'after', 'assembling', 'perturbative', 'and', 'nonperturbative', 'contributions', 'to', 'the', 'superpotential', 'we', 'study', 'supersymmetric', 'ads', 'vacua', 'it', 'is', 'found', 'that', 'the', 'susy', 'condition', 'decouples', 'the', 'bundle', 'moduli', 'from', 'the', 'geometric', 'moduli', 'we', 'show', 'that', 'mtheory', 'supersymmetric', 'vacua', 'without', 'fivebranes', 'can', 'be', 'found', 'albeit', 'not', 'at', 'phenomenologically', 'interesting', 'values', 'of', 'the', 'geometric', 'moduli', 'this', 'result', 'is', 'fairly', 'independent', 'of', 'the', 'choice', 'of', 'vector', 'bundle', 'at', 'the', 'observable', 'brane']] | [-0.15917675515089383, 0.14589261157768743, -0.08264326953990314, 0.14065152619972485, -0.1648204744546203, -0.1601009362818005, 0.002014660556402541, 0.2901715616205039, -0.18433508887631064, -0.23770883579148364, 0.06406722691635253, -0.21878545326074117, -0.16084922450587494, 0.10171415931225278, -0.1289887426435265, -0.024240857033651742, -0.003321257793124168, -0.02536395250442829, -0.09947507926760568, -0.3005584915006846, 0.3968824549997581, 0.013151215020129954, 0.2826902675460171, 0.0962572383880082, 0.12318664144027892, -0.03351358625991625, -0.001437408474579681, -0.030476620655421536, -0.15556996038864732, 0.13055097541633198, 0.24885924035356244, 0.01953270971877918, 0.05343118932974376, -0.44529637371595127, -0.1962001660774517, 0.15489096070447836, 0.20700418447208313, 0.15510400069010166, 0.017560312288052594, -0.28288030891700555, 0.059824320665411365, -0.11885214049923624, -0.14951208033616734, -0.1112860944975196, 0.017860520128089623, -0.14955548338151273, -0.2009436132271689, 0.033017856893591754, -0.018658713387851498, 0.00017980299534574719, -0.11243534884202287, -0.09347248769841576, -0.12391352987108852, 0.019734511215893823, 0.20029546312706986, 0.04522004835343145, 0.1629519423715173, -0.1804961082827698, -0.0943131349227242, 0.38206724054713287, -0.06893178513842343, -0.24122211610265645, 0.05129660743125181, -0.10208499623384355, -0.17586173016563741, 0.12455986997820011, 0.07104273065960191, 0.1887117454309802, -0.09621217143757425, 0.25634673142268943, -0.03426319782272024, 0.11049020740395511, 0.08487509328246344, 0.06484478299029683, 0.2905173969405298, 0.11572207660833729, 0.025650978566481526, 0.1264322309786781, 0.011730936971734782, -0.15231175241878128, -0.5091965356912777, -0.14686401930587892, -0.07800104973468049, 0.17043643558003765, -0.1941637281283562, -0.17331841079703042, 0.3842838470333519, 0.08186776996839024, 0.21685691754767344, 0.05792975313037293, 0.18655526986210572, 0.06601803576420878, 0.05824244525710135, -0.008061990129427259, 0.3080928732377996, 0.12281932250440178, 0.09614195169184271, -0.23847032847586763, -0.12279231345480066, 0.21708448673953934] |
708.3806 | Instantons in N=2 magnetized D-brane worlds | In a toroidal orbifold of type IIB string theory we study instanton effects
in N=2 super Yang-Mills theories engineered with systems of wrapped magnetized
D9 branes and Euclidean D5 branes. We analyze the various open string sectors
in this brane system and study the 1-loop amplitudes described by annulus
diagrams with mixed boundary conditions, explaining their role in the stringy
instanton calculus. We show in particular that the non-holomorphic terms in
these annulus amplitudes precisely reconstruct the appropriate Kahler metric
factors that are needed to write the instanton correlators in terms of purely
holomorphic variables. We also explicitly derive the correct holomorphic
structure of the instanton induced low energy effective action in the Coulomb
branch.
| hep-th | in a toroidal orbifold of type iib string theory we study instanton effects in n2 super yangmills theories engineered with systems of wrapped magnetized d9 branes and euclidean d5 branes we analyze the various open string sectors in this brane system and study the 1loop amplitudes described by annulus diagrams with mixed boundary conditions explaining their role in the stringy instanton calculus we show in particular that the nonholomorphic terms in these annulus amplitudes precisely reconstruct the appropriate kahler metric factors that are needed to write the instanton correlators in terms of purely holomorphic variables we also explicitly derive the correct holomorphic structure of the instanton induced low energy effective action in the coulomb branch | [['in', 'a', 'toroidal', 'orbifold', 'of', 'type', 'iib', 'string', 'theory', 'we', 'study', 'instanton', 'effects', 'in', 'n2', 'super', 'yangmills', 'theories', 'engineered', 'with', 'systems', 'of', 'wrapped', 'magnetized', 'd9', 'branes', 'and', 'euclidean', 'd5', 'branes', 'we', 'analyze', 'the', 'various', 'open', 'string', 'sectors', 'in', 'this', 'brane', 'system', 'and', 'study', 'the', '1loop', 'amplitudes', 'described', 'by', 'annulus', 'diagrams', 'with', 'mixed', 'boundary', 'conditions', 'explaining', 'their', 'role', 'in', 'the', 'stringy', 'instanton', 'calculus', 'we', 'show', 'in', 'particular', 'that', 'the', 'nonholomorphic', 'terms', 'in', 'these', 'annulus', 'amplitudes', 'precisely', 'reconstruct', 'the', 'appropriate', 'kahler', 'metric', 'factors', 'that', 'are', 'needed', 'to', 'write', 'the', 'instanton', 'correlators', 'in', 'terms', 'of', 'purely', 'holomorphic', 'variables', 'we', 'also', 'explicitly', 'derive', 'the', 'correct', 'holomorphic', 'structure', 'of', 'the', 'instanton', 'induced', 'low', 'energy', 'effective', 'action', 'in', 'the', 'coulomb', 'branch']] | [-0.20168038990105625, 0.17281174201963712, -0.07192032796371242, 0.19974759931311659, -0.056056505704865506, -0.1249812422360739, -0.0037866325856631866, 0.30239132166050536, -0.1669654739124741, -0.23250972397787414, 0.07040932392397814, -0.2434786608685618, -0.21073406690974597, 0.05685219279004504, -0.10357916626431372, -0.0006749192981616311, 0.014745149587321541, 0.032447193273464625, -0.10653570581875417, -0.278182351441406, 0.40605416127440075, -0.04012896235951263, 0.24734761907678585, 0.0775639146566391, 0.06494427698299937, -0.01326748220472718, -0.02519559666676366, 0.007364914906413659, -0.16203704291338394, 0.14779480384440039, 0.26037951647911384, 0.009804376781634663, 0.024517519871258865, -0.5195451069137325, -0.1962437685903, 0.10619481520160384, 0.20864805540717815, 0.11683503617532551, 0.037071684869411196, -0.25268825097819386, 0.0606815147942499, -0.15995785861235598, -0.22037194798417065, -0.10277779430515416, 0.044858463181425695, -0.07696655961563406, -0.19162414971911146, 0.01887545180355158, 0.01423372284144811, 0.028442837708913114, -0.06428773534767654, -0.09060374536430059, -0.09247781316162614, 0.10027831782708349, 0.1273166325510196, 0.08176644742893784, 0.14668639321285099, -0.2241651733669088, -0.12154732367236411, 0.3153611780792151, -0.1152365695502933, -0.26480667009625747, 0.09117585031882576, -0.16735236547158464, -0.16500169282941066, 0.0910500146975012, 0.10500048929015579, 0.19489816731732826, -0.12361853379179197, 0.26844992450692784, 0.007613538644964928, 0.08869333083680628, 0.15405922880315262, 0.06718213955831269, 0.2555597021608897, 0.07475580244082147, -0.016171957957355872, 0.18805621211295542, -0.011750391253229717, -0.153193342532588, -0.43730692192102255, -0.10740590634067422, -0.03138417322593539, 0.14024332406444717, -0.18825212239019531, -0.22864609798011573, 0.34738036600149075, 0.05659611574981523, 0.1815453484965711, 0.017569085678247654, 0.19949725006261598, 0.10061246639360552, 0.0546415535915319, 0.029682347275640654, 0.2182125768745723, 0.15559675779962992, 0.06990529958097993, -0.288659850159741, -0.1631121570872062, 0.2250191152257764] |
708.3807 | Doniach diagram for ordered, disordered and underscreened Kondo lattices | The Doniach's diagram has been originally proposed to describe the
competition between the local Kondo effect and the intersite RKKY interactions
in cerium compounds. Here we discuss the extension of this diagram to different
variations of Kondo lattice model. We consider a) ordered cerium compounds
where the competition between magnetic order and Kondo effect plays an
important role, as $CeRh_2Si_2$, b) disordered cerium systems with competing
spin glass phase, magnetic ordered phases and a Kondo phase, as the heavy
fermion cerium alloy $CeCu_xNi_{1-x}$ and, c) uranium compounds where a
coexistence between Kondo effect and ferromagnetic order has been observed, as
UTe. We show that all these cases can be described by a generalized Doniach
phase diagram.
| cond-mat.str-el | the doniachs diagram has been originally proposed to describe the competition between the local kondo effect and the intersite rkky interactions in cerium compounds here we discuss the extension of this diagram to different variations of kondo lattice model we consider a ordered cerium compounds where the competition between magnetic order and kondo effect plays an important role as cerh_2si_2 b disordered cerium systems with competing spin glass phase magnetic ordered phases and a kondo phase as the heavy fermion cerium alloy cecu_xni_1x and c uranium compounds where a coexistence between kondo effect and ferromagnetic order has been observed as ute we show that all these cases can be described by a generalized doniach phase diagram | [['the', 'doniachs', 'diagram', 'has', 'been', 'originally', 'proposed', 'to', 'describe', 'the', 'competition', 'between', 'the', 'local', 'kondo', 'effect', 'and', 'the', 'intersite', 'rkky', 'interactions', 'in', 'cerium', 'compounds', 'here', 'we', 'discuss', 'the', 'extension', 'of', 'this', 'diagram', 'to', 'different', 'variations', 'of', 'kondo', 'lattice', 'model', 'we', 'consider', 'a', 'ordered', 'cerium', 'compounds', 'where', 'the', 'competition', 'between', 'magnetic', 'order', 'and', 'kondo', 'effect', 'plays', 'an', 'important', 'role', 'as', 'cerh_2si_2', 'b', 'disordered', 'cerium', 'systems', 'with', 'competing', 'spin', 'glass', 'phase', 'magnetic', 'ordered', 'phases', 'and', 'a', 'kondo', 'phase', 'as', 'the', 'heavy', 'fermion', 'cerium', 'alloy', 'cecu_xni_1x', 'and', 'c', 'uranium', 'compounds', 'where', 'a', 'coexistence', 'between', 'kondo', 'effect', 'and', 'ferromagnetic', 'order', 'has', 'been', 'observed', 'as', 'ute', 'we', 'show', 'that', 'all', 'these', 'cases', 'can', 'be', 'described', 'by', 'a', 'generalized', 'doniach', 'phase', 'diagram']] | [-0.1566460368587919, 0.28861836728389356, -0.03634646677300739, 0.09642325057749353, -0.012631385728878819, -0.17354992647128908, 0.09542833220861528, 0.36826953821734565, -0.2457268794472127, -0.27662080558745755, -0.02311035070021677, -0.34812461685227314, -0.16820866196699766, 0.07508381414834572, 0.07591599696315825, -0.05052540984166705, -0.08192026789462113, -0.04175786787401075, -0.13388615047113728, -0.2536142798565814, 0.2725655817669695, -0.034436694444562106, 0.2733914393324243, 0.1252385312691331, 0.016690403745388206, 0.016839089410622482, 0.21371753590748363, 0.0693381396254984, -0.16023933902697932, -0.03265527034502314, 0.2770910191147224, -0.11734762995544334, 0.1606580315724663, -0.3921329664471357, -0.20948480308541786, 0.08849126734649358, 0.1305857545696199, 0.12369471034440009, -0.09012969991359253, -0.297821362486676, 0.017877591842704495, -0.21720558675613416, -0.06631965829545389, -0.1370495044099896, 0.0008213436635939971, -0.017794462848130774, -0.2878435860266504, 0.0888429266927035, 0.07587588674150934, 0.15655434565092236, -0.08786192816965606, -0.16194374313497026, -0.06488224963212143, 0.08149836147608965, 0.06493694309509643, 0.05956251543906072, 0.09349277254760913, -0.053525149046807836, -0.1394154078155027, 0.42524675480697466, -0.026435630600494534, -0.020229522033554055, 0.19874999875040805, -0.1648719164928796, -0.09963608643283015, 0.0967146873474121, 0.09158579042262358, 0.0687492915591144, -0.13248227986142688, 0.11531052858848378, -0.021669200419083885, 0.17176731472187068, -0.0381240851306559, 0.0810288301912015, 0.2660306214294194, 0.24685408052704905, -0.003931104639828529, 0.2092145796045256, -0.12476980829125513, -0.11952576240038743, -0.1652543180986591, -0.16953278589669776, -0.19558746957969245, -0.017669610662952712, -0.0792082913092125, -0.21969311842289957, 0.3957835355935537, 0.15726054071792928, 0.15260509757891946, -0.16807154020213563, 0.19845379752349918, 0.048785697629310835, 0.03242006981289824, -0.045346901565790174, 0.19972253516316413, 0.1810547670936617, 0.11637923259935949, -0.344170552532634, 0.12139582756258871, 0.1255227531346938] |
708.3808 | PAHs in the Halo of NGC 5529 | We present sensitive ISO $\lambda 6.7 \mu$m observations of the edge-on
galaxy, NGC 5529, finding an extensive MIR halo around NGC 5529. The emission
is dominated by PAHs in this band. The PAH halo has an exponential scale height
of 3.7 kpc but can still be detected as far as $\approx 10$ kpc from the plane
to the limits of the high dynamic range (1770/1) data. This is the most
extensive PAH halo yet detected in a normal galaxy. This halo shows
substructure and the PAHs likely originate from some type of disk outflow. PAHs
are long-lived in a halo environment and therefore continuous replenishment
from the disk is not required (unless halo PAHs are also being destroyed or
removed), consistent with the current low SFR of the galaxy. The PAHs correlate
spatially with halo H$\alpha$ emission, previously observed by Miller &
Veilleux (2003); both components are likely excited/ionized by in-disk photons
that are leaking into the halo. The presence of halo gas may be related to the
environment of NGC 5529 which contains at least 17 galaxies in a small group of
which NGC 5529 is the dominant member. Of these, we have identified two new
companions from the SDSS.
| astro-ph | we present sensitive iso lambda 67 mum observations of the edgeon galaxy ngc 5529 finding an extensive mir halo around ngc 5529 the emission is dominated by pahs in this band the pah halo has an exponential scale height of 37 kpc but can still be detected as far as approx 10 kpc from the plane to the limits of the high dynamic range 17701 data this is the most extensive pah halo yet detected in a normal galaxy this halo shows substructure and the pahs likely originate from some type of disk outflow pahs are longlived in a halo environment and therefore continuous replenishment from the disk is not required unless halo pahs are also being destroyed or removed consistent with the current low sfr of the galaxy the pahs correlate spatially with halo halpha emission previously observed by miller veilleux 2003 both components are likely excitedionized by indisk photons that are leaking into the halo the presence of halo gas may be related to the environment of ngc 5529 which contains at least 17 galaxies in a small group of which ngc 5529 is the dominant member of these we have identified two new companions from the sdss | [['we', 'present', 'sensitive', 'iso', 'lambda', '67', 'mum', 'observations', 'of', 'the', 'edgeon', 'galaxy', 'ngc', '5529', 'finding', 'an', 'extensive', 'mir', 'halo', 'around', 'ngc', '5529', 'the', 'emission', 'is', 'dominated', 'by', 'pahs', 'in', 'this', 'band', 'the', 'pah', 'halo', 'has', 'an', 'exponential', 'scale', 'height', 'of', '37', 'kpc', 'but', 'can', 'still', 'be', 'detected', 'as', 'far', 'as', 'approx', '10', 'kpc', 'from', 'the', 'plane', 'to', 'the', 'limits', 'of', 'the', 'high', 'dynamic', 'range', '17701', 'data', 'this', 'is', 'the', 'most', 'extensive', 'pah', 'halo', 'yet', 'detected', 'in', 'a', 'normal', 'galaxy', 'this', 'halo', 'shows', 'substructure', 'and', 'the', 'pahs', 'likely', 'originate', 'from', 'some', 'type', 'of', 'disk', 'outflow', 'pahs', 'are', 'longlived', 'in', 'a', 'halo', 'environment', 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708.3809 | Design Strategies for the Geometric Synthesis of Orthoglide-type
Mechanisms | The paper addresses the geometric synthesis of Orthoglide-type mechanism, a
family of 3-DOF parallel manipulators for rapid machining applications, which
combine advantages of both serial mechanisms and parallel kinematic
architectures. These manipulators possess quasi-isotropic kinematic
performances and are made up of three actuated fixed prismatic joints, which
are mutually orthogonal and connected to a mobile platform via three
parallelogram chains. The platform moves in the Cartesian space with fixed
orientation, similar to conventional XYZ-machine. Three strategies have been
proposed to define the Orthoglide geometric parameters (manipulator link
lengths and actuated joint limits) as functions of a cubic workspace size and
dextrous properties expressed by bounds on the velocity transmission factors,
manipulability or the Jacobian condition number. Low inertia and intrinsic
stiffness have been set as additional design goals expressed by the minimal
link length requirement. For each design strategy, analytical expressions for
computing the Orthoglide parameters are proposed. It is showed that the
proposed strategies yield Pareto-optimal solutions, which differ by the
kinematic performances outside the prescribed Cartesian cube (but within the
workspace bounded by the actuated joint limits). The proposed technique is
illustrated with numerical examples for the Orthoglide prototype design.
| cs.RO | the paper addresses the geometric synthesis of orthoglidetype mechanism a family of 3dof parallel manipulators for rapid machining applications which combine advantages of both serial mechanisms and parallel kinematic architectures these manipulators possess quasiisotropic kinematic performances and are made up of three actuated fixed prismatic joints which are mutually orthogonal and connected to a mobile platform via three parallelogram chains the platform moves in the cartesian space with fixed orientation similar to conventional xyzmachine three strategies have been proposed to define the orthoglide geometric parameters manipulator link lengths and actuated joint limits as functions of a cubic workspace size and dextrous properties expressed by bounds on the velocity transmission factors manipulability or the jacobian condition number low inertia and intrinsic stiffness have been set as additional design goals expressed by the minimal link length requirement for each design strategy analytical expressions for computing the orthoglide parameters are proposed it is showed that the proposed strategies yield paretooptimal solutions which differ by the kinematic performances outside the prescribed cartesian cube but within the workspace bounded by the actuated joint limits the proposed technique is illustrated with numerical examples for the orthoglide prototype design | [['the', 'paper', 'addresses', 'the', 'geometric', 'synthesis', 'of', 'orthoglidetype', 'mechanism', 'a', 'family', 'of', '3dof', 'parallel', 'manipulators', 'for', 'rapid', 'machining', 'applications', 'which', 'combine', 'advantages', 'of', 'both', 'serial', 'mechanisms', 'and', 'parallel', 'kinematic', 'architectures', 'these', 'manipulators', 'possess', 'quasiisotropic', 'kinematic', 'performances', 'and', 'are', 'made', 'up', 'of', 'three', 'actuated', 'fixed', 'prismatic', 'joints', 'which', 'are', 'mutually', 'orthogonal', 'and', 'connected', 'to', 'a', 'mobile', 'platform', 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708.381 | From the Planck to the Photon Scale | Using considerations from the Quantum Zero Point Field and Thermodynamics, we
show that the Planck Scale is the minimum (maximum mass) and the Photon Scale
is the maximum (minimum mass) Scale in the universe. The arguments also deduce
the residual cosmic energy of $10^{-33}eV$ observed lately.
| physics.gen-ph | using considerations from the quantum zero point field and thermodynamics we show that the planck scale is the minimum maximum mass and the photon scale is the maximum minimum mass scale in the universe the arguments also deduce the residual cosmic energy of 1033ev observed lately | [['using', 'considerations', 'from', 'the', 'quantum', 'zero', 'point', 'field', 'and', 'thermodynamics', 'we', 'show', 'that', 'the', 'planck', 'scale', 'is', 'the', 'minimum', 'maximum', 'mass', 'and', 'the', 'photon', 'scale', 'is', 'the', 'maximum', 'minimum', 'mass', 'scale', 'in', 'the', 'universe', 'the', 'arguments', 'also', 'deduce', 'the', 'residual', 'cosmic', 'energy', 'of', '1033ev', 'observed', 'lately']] | [-0.12037410785484573, 0.22556773307935699, -0.12795276554179905, 0.1497951118812046, -0.054330524866995605, -0.03913362787368343, 0.04363375025011761, 0.2724021009432719, -0.2765605861483061, -0.3582232503382408, 0.10289444664807018, -0.29643679345431534, -0.04251827574942423, 0.15708399227941813, -0.0030424580706850343, 0.06128212900670326, 0.008476224287575029, 0.07810407563153168, -0.06310059987109802, -0.20622258811541225, 0.3423840803620608, 0.16974943326330622, 0.3103135415231404, 0.13582186720779407, 0.13250870172582244, -0.07177265236943799, -0.017668113942541506, 0.025279704056194296, -0.19312342962470924, 0.0527483459673417, 0.1312180956694014, 0.14792518690228462, 0.21606937488136085, -0.3604069398564246, -0.21876184678757968, 0.13078652233209298, 0.07408989649569697, 0.1289748325134101, -0.06263729263636102, -0.17741839403448545, 0.09044553985333313, -0.13360745631887214, -0.1333773751216738, 0.03519756676953124, -0.011643510845833984, -0.020615750518829926, -0.22204696544972452, 0.1436943496601484, -0.012233443355754665, 0.03798021619592834, -0.0584865804981825, -0.0893656601117033, -0.05402857259563778, 0.0570553423654612, 0.10892464755022008, 0.043215760363913745, 0.18047898790151204, -0.13511561899592736, -0.07943687748933292, 0.3919184628023725, -0.08999418629252393, -0.06529214382981477, 0.09219895605929196, -0.19451474297143842, -0.12354319620594058, 0.0930928898464038, 0.10396349289373535, 0.06841882492375115, -0.14241590469306253, 0.16346806862502886, -0.016746569262898487, 0.20427638912160942, 0.07186809552671469, 0.03953785014986668, 0.28055924339138943, 0.12103830757753356, 0.10799989343175422, 0.08464338715471652, -0.15636889741796514, -0.09648515389341375, -0.33412332816616347, -0.12355424560930418, -0.27313996885862685, 0.09167528639385558, -0.1859624174457681, -0.09866276733658236, 0.3466125281284685, 0.1632015260503344, 0.24263220942457733, 0.09624937502161154, 0.27091513881864754, 0.16388388666445794, 0.1068866114516783, 0.11823897081953676, 0.34066585491856805, 0.14814082927920896, 0.09660808568941834, -0.2768386374379549, -0.051989045166208045, 0.06264715694376956] |
708.3811 | An Exhaustive Study of the Workspaces Tolopogies of all 3R Orthogonal
Manipulators with Geometric Simplifications | This paper proposes a classification of three-revolute orthogonal
manipulators that have at least one of their DH parameters equal to zero. This
classification is based on the topology of their workspace. The workspace is
characterized in a half-cross section by the singular curves. The workspace
topology is defined by the number of cusps and nodes that appear on these
singular curves. The manipulators are classified into different types with
similar kinematic properties. Each type is evaluated according to interesting
kinematic properties such as, whether the workspace is fully reachable with
four inverse kinematic solutions or not, the existence of voids, and the
feasibility of continuous trajectories in the workspace. It is found that
several orthogonal manipulators have a "well-connected" workspace, that is,
their workspace is fully accessible with four inverse kinematic solutions and
any continuous trajectory is feasible. This result is of interest for the
design of alternative manipulator geometries.
| cs.RO | this paper proposes a classification of threerevolute orthogonal manipulators that have at least one of their dh parameters equal to zero this classification is based on the topology of their workspace the workspace is characterized in a halfcross section by the singular curves the workspace topology is defined by the number of cusps and nodes that appear on these singular curves the manipulators are classified into different types with similar kinematic properties each type is evaluated according to interesting kinematic properties such as whether the workspace is fully reachable with four inverse kinematic solutions or not the existence of voids and the feasibility of continuous trajectories in the workspace it is found that several orthogonal manipulators have a wellconnected workspace that is their workspace is fully accessible with four inverse kinematic solutions and any continuous trajectory is feasible this result is of interest for the design of alternative manipulator geometries | [['this', 'paper', 'proposes', 'a', 'classification', 'of', 'threerevolute', 'orthogonal', 'manipulators', 'that', 'have', 'at', 'least', 'one', 'of', 'their', 'dh', 'parameters', 'equal', 'to', 'zero', 'this', 'classification', 'is', 'based', 'on', 'the', 'topology', 'of', 'their', 'workspace', 'the', 'workspace', 'is', 'characterized', 'in', 'a', 'halfcross', 'section', 'by', 'the', 'singular', 'curves', 'the', 'workspace', 'topology', 'is', 'defined', 'by', 'the', 'number', 'of', 'cusps', 'and', 'nodes', 'that', 'appear', 'on', 'these', 'singular', 'curves', 'the', 'manipulators', 'are', 'classified', 'into', 'different', 'types', 'with', 'similar', 'kinematic', 'properties', 'each', 'type', 'is', 'evaluated', 'according', 'to', 'interesting', 'kinematic', 'properties', 'such', 'as', 'whether', 'the', 'workspace', 'is', 'fully', 'reachable', 'with', 'four', 'inverse', 'kinematic', 'solutions', 'or', 'not', 'the', 'existence', 'of', 'voids', 'and', 'the', 'feasibility', 'of', 'continuous', 'trajectories', 'in', 'the', 'workspace', 'it', 'is', 'found', 'that', 'several', 'orthogonal', 'manipulators', 'have', 'a', 'wellconnected', 'workspace', 'that', 'is', 'their', 'workspace', 'is', 'fully', 'accessible', 'with', 'four', 'inverse', 'kinematic', 'solutions', 'and', 'any', 'continuous', 'trajectory', 'is', 'feasible', 'this', 'result', 'is', 'of', 'interest', 'for', 'the', 'design', 'of', 'alternative', 'manipulator', 'geometries']] | [-0.18668496658094227, 0.060941024140144386, -0.09803616531814138, -0.009189519321080298, -0.11547981057005624, -0.1401185974323501, -0.012204879852167021, 0.39424343607077994, -0.24412690110504628, -0.2911516479899486, 0.13174772412050514, -0.23823208414018154, -0.12828310299819956, 0.1655705586805319, -0.06904455803024272, 0.09034200172871351, 0.04943281615152955, 0.05456696410663426, -0.043259975565597415, -0.26086323923120897, 0.34718786872457713, -0.04343488309532404, 0.25526364318405587, -0.03152033360364537, 0.10642945240406941, -0.00014162144623696804, -0.0037086722631162654, 0.06933255402172411, -0.1223880310273186, 0.11492781938364108, 0.26326831908275683, 0.14305100905088086, 0.2032403824540476, -0.3577005218962828, -0.14190050223842263, 0.13267852641331654, 0.17423636305766801, 0.01116381977374355, 0.02469567120851328, -0.26852523199593026, 0.12831432048541805, -0.1162344272248447, -0.15295315913235147, -0.05568540612856547, 0.03558075588817398, 0.04542099591344595, -0.19035727085235218, 0.008963112697626154, 0.042383947668907546, 0.08445047387853265, -0.06004844762695332, -0.0832596651200826, -0.05096832294327518, 0.14707551428621324, 0.0326182560219119, -0.01030950593141218, 0.11732842868814866, -0.11571171451204766, -0.14772486462878684, 0.4013147985283285, 0.087232253421098, -0.2773493633512408, 0.23295258086485168, -0.12091642800097664, -0.098454690479363, 0.1573886678678294, 0.16210903593649467, 0.13680824048041054, -0.18028259873390198, 0.10331059434955629, -0.06788774333894253, 0.11061394439350503, 0.07943935537245124, -0.007681725639849901, 0.1877953656683288, 0.17525244183838368, 0.11782782933985193, 0.11970290189453711, -0.0711998654048269, -0.07798808770875136, -0.3264171576406807, -0.15151035617726544, -0.16761408702780803, -0.000596679453641021, -0.10178720176811717, -0.18649545265361667, 0.41196526896829405, 0.07699247760989238, 0.2464438640077909, 0.046316383474816876, 0.3229126827542981, 0.059977494067667676, 0.06933996682909006, 0.08765367026130358, 0.26236665117243924, 0.06563311960858603, 0.05735537862405181, -0.18342487760819495, 0.10541814633916753, 0.0722430007904768] |
708.3812 | Search for new charmonium states in the processes e+ e- --> J/psi D(*)
D(*) at sqrt{s} ~ 10.6 GeV | We present a study of the X(3940) state in the process e+e- -> J/psi D* Dbar.
The X(3940) mass and width are measured to be (3942 +7 -6 +- 6)MeV/c^2 and
Gamma=(37 + 26 - 15 +- 8 MeV. In the process e+e- -> J/psi D* D*bar we have
observed another charmonium-like state, which we denote as X(4160), in the
spectrum of invariant masses of D*+ D*- combinations. The X(4160) parameters
are M= 4156 + 25 - 20 +- 15 MeV/c^2 and Gamma = 139 + 111 -61 +- 21 MeV. The
analysis is based on a data sample with an integrated luminosity of 693 /fb
recorded near the Upsilon(4S) resonance with the Belle detector at the KEKB e+
e- asymmetric-energy collider.
| hep-ex | we present a study of the x3940 state in the process ee jpsi d dbar the x3940 mass and width are measured to be 3942 7 6 6mevc2 and gamma37 26 15 8 mev in the process ee jpsi d dbar we have observed another charmoniumlike state which we denote as x4160 in the spectrum of invariant masses of d d combinations the x4160 parameters are m 4156 25 20 15 mevc2 and gamma 139 111 61 21 mev the analysis is based on a data sample with an integrated luminosity of 693 fb recorded near the upsilon4s resonance with the belle detector at the kekb e e asymmetricenergy collider | [['we', 'present', 'a', 'study', 'of', 'the', 'x3940', 'state', 'in', 'the', 'process', 'ee', 'jpsi', 'd', 'dbar', 'the', 'x3940', 'mass', 'and', 'width', 'are', 'measured', 'to', 'be', '3942', '7', '6', '6mevc2', 'and', 'gamma37', '26', '15', '8', 'mev', 'in', 'the', 'process', 'ee', 'jpsi', 'd', 'dbar', 'we', 'have', 'observed', 'another', 'charmoniumlike', 'state', 'which', 'we', 'denote', 'as', 'x4160', 'in', 'the', 'spectrum', 'of', 'invariant', 'masses', 'of', 'd', 'd', 'combinations', 'the', 'x4160', 'parameters', 'are', 'm', '4156', '25', '20', '15', 'mevc2', 'and', 'gamma', '139', '111', '61', '21', 'mev', 'the', 'analysis', 'is', 'based', 'on', 'a', 'data', 'sample', 'with', 'an', 'integrated', 'luminosity', 'of', '693', 'fb', 'recorded', 'near', 'the', 'upsilon4s', 'resonance', 'with', 'the', 'belle', 'detector', 'at', 'the', 'kekb', 'e', 'e', 'asymmetricenergy', 'collider']] | [-0.10917002143967827, 0.17726446138557447, -0.05283853662183025, 0.07912502469753235, -0.01437827860084966, -0.14919066796115926, 0.07513851921410403, 0.32923944841173514, -0.13186502817121368, -0.3437775080954587, -0.024504602631269436, -0.4413474353582219, 0.06854410678217257, 0.12975156272727031, 0.10105479938081569, 0.13725055449780216, 0.1391561494976351, 0.01391676883428806, -0.045949068325744184, -0.19708783819374662, 0.21102179741892205, 0.035985100863466936, 0.20578551185058636, 0.11408925415189178, -0.010016219689364166, -0.029280527770795203, 0.0004556289641186595, -0.13755753647786118, -0.15732328319939337, 0.029694777294665714, 0.26587581439202446, 0.14246985545442267, 0.11860763302279843, -0.23553894807688872, 0.018334153875777567, 0.1571290121603481, 0.14724413820766602, -0.04470135693339183, 0.026778163578085327, -0.3949181655318373, 0.1881057016758455, -0.1964757730235794, -0.10008344245660636, 0.05550999046061878, 0.10129162533795116, -0.12180715299392533, -0.31436161566266996, 0.11243514178527726, -0.06159664186028143, 0.12111737636883778, -0.06971143994100944, -0.3084334885934368, -0.06200066315337877, -0.10131722746882588, -0.03565446117782914, 0.14143250031176852, 0.21650763247507038, -0.025908897126403947, -0.21736435285506392, 0.3292026459756825, -0.08787270796259421, -0.06935208689214455, 0.14110315486107505, -0.2459477363412993, -0.08911994439377277, 0.22341545947172023, 0.24532204585719025, 0.04327415854721847, -0.21119666601427728, 0.1279742491061808, -0.0336210675299366, 0.1930754808364091, 0.12635915180564755, 0.06959304875797695, 0.13086035429862225, 0.20838943039200752, -0.02002625101616744, 0.033760736465747294, -0.20544375454429192, 0.04258175643540367, -0.3799928286526766, -0.10289349097810271, -0.07804658093610434, 0.15589497390276477, -0.016323732054405373, -0.0047664964588841905, 0.36170858413808876, 0.0021076975066939164, 0.4086743673671865, -0.03274597751765719, 0.18382507914470303, 0.09000187496443417, 0.021021435390004492, 0.12040135845435779, 0.31770687158805905, 0.18108810598237646, 0.1652541433469634, -0.264217871435297, -0.04178484526669814, -0.06042363621397979] |
708.3813 | Non-Commutativity of Effective Space-Time Coordinates and the Minimal
Length | Considering that a position measurement can effectively involve a
momentum-dependent shift and rescaling of the "true" space-time coordinates, we
construct a set of effective space-time coordinates which are naturally
non-commutative. They lead to a minimum length and are shown to be related to
Snyder's coordinates and the five-dimensional formulation of Deformed Special
Relativity. This effective approach then provides a natural physical
interpretation for both the extra fifth dimension and the deformed momenta
appearing in this context.
| hep-th | considering that a position measurement can effectively involve a momentumdependent shift and rescaling of the true spacetime coordinates we construct a set of effective spacetime coordinates which are naturally noncommutative they lead to a minimum length and are shown to be related to snyders coordinates and the fivedimensional formulation of deformed special relativity this effective approach then provides a natural physical interpretation for both the extra fifth dimension and the deformed momenta appearing in this context | [['considering', 'that', 'a', 'position', 'measurement', 'can', 'effectively', 'involve', 'a', 'momentumdependent', 'shift', 'and', 'rescaling', 'of', 'the', 'true', 'spacetime', 'coordinates', 'we', 'construct', 'a', 'set', 'of', 'effective', 'spacetime', 'coordinates', 'which', 'are', 'naturally', 'noncommutative', 'they', 'lead', 'to', 'a', 'minimum', 'length', 'and', 'are', 'shown', 'to', 'be', 'related', 'to', 'snyders', 'coordinates', 'and', 'the', 'fivedimensional', 'formulation', 'of', 'deformed', 'special', 'relativity', 'this', 'effective', 'approach', 'then', 'provides', 'a', 'natural', 'physical', 'interpretation', 'for', 'both', 'the', 'extra', 'fifth', 'dimension', 'and', 'the', 'deformed', 'momenta', 'appearing', 'in', 'this', 'context']] | [-0.14689663567083985, 0.14528405986187098, -0.11534005809134167, 0.11711826681092039, -0.13242996500584445, -0.14989968924170458, -0.02102854691666404, 0.31295678506629837, -0.2556444431262973, -0.29262439760158915, 0.058435662065963505, -0.214909578872673, -0.17143050769932175, 0.1430478414251028, -0.10518013954309649, 0.002510810336772058, 0.01592127811224935, 0.07479948983650263, -0.13878798366701967, -0.20321297967242763, 0.3414707799981299, 0.07562310454724004, 0.24585941476183698, 0.0012483969483965713, 0.14642532955315946, 0.0425401414548488, -0.02617997635695103, 0.08594445004373004, -0.09144314274693131, 0.1576295954812514, 0.2263537060567423, 0.09183119041661389, 0.169075656074136, -0.3597400819417089, -0.22589250183419177, 0.09261837754839737, 0.17259807992530496, 0.17879654389138236, 0.0024499439781433658, -0.2756450160308496, 0.008304630234641465, -0.18383609738176396, -0.19347391381100015, -0.1169466462574507, 0.0440485770323951, -0.0537629622206288, -0.2702368798812753, 0.05772944813284803, 0.058818380323875895, -0.0073343554977327585, -0.06805490112961515, -0.07152551631167482, -0.01654375980203775, 0.08060282076200422, 0.07006156121803399, 0.06094614678295329, 0.11993370282978408, -0.05191889643289247, -0.07130027289110187, 0.4426466109856081, -0.008967030082682246, -0.3268712750930143, 0.14070971002710345, -0.14106226962451873, -0.11727975797686285, 0.08812060427858102, 0.16328396140842846, 0.13459634446342916, -0.14756972705455204, 0.1431416125790412, -0.02131500579171667, 0.11931526911824844, 0.14211245569382108, 0.08315558052058086, 0.23295120453756107, 0.07100989295806932, 0.04749965545182165, 0.092957622259794, -0.03758590061242055, -0.14799276431164654, -0.4033414932261956, -0.15016842464989932, -0.13345061071020992, 0.08303132194621292, -0.1476374082443439, -0.15584825744697714, 0.36531190750630277, 0.12072457064947996, 0.21345803539856875, 0.011114197980771822, 0.22428165689895027, 0.12201176378987025, 0.10355728784404498, 0.04804151682918401, 0.23972519724262192, 0.10991130239409885, 0.06601540132817861, -0.19758644098979666, -0.05269482119106933, 0.13371518233447874] |
708.3814 | Extending BCCNR flavored geometry to the negative coupling constant
region | We extend BCCNR's flavored KW and KS geometries into the negative coupling
constant region and try giving physical explanations from the dual gauge theory
side. We show that, in the extended region, except the coupling constant being
negative, all other fields of the super-gravity theory having good properties
which can be described by the dual gauge theory.
| hep-th | we extend bccnrs flavored kw and ks geometries into the negative coupling constant region and try giving physical explanations from the dual gauge theory side we show that in the extended region except the coupling constant being negative all other fields of the supergravity theory having good properties which can be described by the dual gauge theory | [['we', 'extend', 'bccnrs', 'flavored', 'kw', 'and', 'ks', 'geometries', 'into', 'the', 'negative', 'coupling', 'constant', 'region', 'and', 'try', 'giving', 'physical', 'explanations', 'from', 'the', 'dual', 'gauge', 'theory', 'side', 'we', 'show', 'that', 'in', 'the', 'extended', 'region', 'except', 'the', 'coupling', 'constant', 'being', 'negative', 'all', 'other', 'fields', 'of', 'the', 'supergravity', 'theory', 'having', 'good', 'properties', 'which', 'can', 'be', 'described', 'by', 'the', 'dual', 'gauge', 'theory']] | [-0.10744275758874469, 0.17399823984929494, -0.0684655432456306, 0.08921822868952793, -0.12351412930625624, -0.21649385965429246, 0.024535886363342536, 0.3414494462028545, -0.22087686009971158, -0.28751701435872484, 0.06065742599769562, -0.25049579083653434, -0.1352291833941958, 0.10601341864094138, -0.0006653094990594712, -0.05285094904580286, -0.05553563604397433, 0.047901111422106624, -0.06573793664158854, -0.24179896730596998, 0.28177019036541295, 0.02712497690559498, 0.2438518282059314, 0.07897778958847214, 0.07669992880879103, -0.015818036934693476, -0.0012097188955522142, 0.08717185158249256, -0.14891899439641879, 0.10953507407767964, 0.21289639805244015, 0.07047788486150759, 0.16722684427596896, -0.4229639903642237, -0.2588751014887488, 0.06628356180070634, 0.11981653706503234, 0.10720589118968096, -0.04200276659269418, -0.2734664646975164, 0.066644818241392, -0.14982868693498727, -0.16002451746940746, -0.07599241113556283, -0.041935090067064654, -0.053560683936146755, -0.24294912086666695, 0.05451334171396281, 0.005647571734568503, -0.01164179724375052, -0.10010399598728068, -0.11889313459479516, -0.030380582470180734, 0.09590808967394489, 0.1121021763288549, 0.044957510660294374, 0.09379423072927498, -0.18157846209526593, -0.1279667108569161, 0.34030374864648494, -0.10564831489214807, -0.18538009644752101, 0.1852014280489779, -0.15256725598426005, -0.10064448024578658, 0.1025163660524413, 0.10539457213599235, 0.14968691194163902, -0.09741636573536587, 0.22223356706893224, -0.06661851281699326, 0.13743539850734773, 0.10998720050390277, 0.06298901414265856, 0.2590640707806285, 0.03261684014328888, 0.022069114708366606, 0.14374412671791756, 0.00495311849018825, -0.15547318882974132, -0.4213803776406816, -0.09268441321286705, -0.07452981603273656, 0.10198472139226007, -0.1399630509461401, -0.10619607241824269, 0.3807114670718355, 0.10979404291304361, 0.2078288079106382, 0.021592035542458428, 0.22071486570140614, 0.11849032138707116, 0.10198851534265227, 0.05976120785011777, 0.3050841760954687, 0.1839016949899295, 0.05304791455689285, -0.2227657459401858, -0.06716327158833987, 0.11038764845579863] |
708.3815 | Flavor Hierarchy Quadratic Rule and Dual Quark-Neutrino Mixing Patterns | Flavor physics is about particle mass-degeneracy-deviations (DMD) and mixing
and especially about hierarchies of those deviations. On the one hand there is
no established theory of particle flavor at present; on the other hand there
are growing data indications on interesting empirical flavor regularities that
are described here by two semi-empirical rules: quadratic DMD-hierarchy and
Dirac-Majorana DMD-duality rules. First rule unites neutrino solar-atmospheric
hierarchy parameter with charged lepton (CL) and quark mass-ratio hierarchies
and simultaneously unites the hierarchies in the mixing matrices of quarks and
neutrinos; the second rule predicts quasi-degenerate neutrinos from the fact of
CL and quark large mass hierarchy and explains quark-neutrino complementarity
mixing relations. The neutrino and quark mixing data seem very different, but
it results that small deviations from maximal neutrino mixing are nearly equal
to the small deviations from minimal mixing of quarks. Those deviations are
quantitatively described by only one new small flavor parameter ~0.0067.
| hep-ph hep-ex | flavor physics is about particle massdegeneracydeviations dmd and mixing and especially about hierarchies of those deviations on the one hand there is no established theory of particle flavor at present on the other hand there are growing data indications on interesting empirical flavor regularities that are described here by two semiempirical rules quadratic dmdhierarchy and diracmajorana dmdduality rules first rule unites neutrino solaratmospheric hierarchy parameter with charged lepton cl and quark massratio hierarchies and simultaneously unites the hierarchies in the mixing matrices of quarks and neutrinos the second rule predicts quasidegenerate neutrinos from the fact of cl and quark large mass hierarchy and explains quarkneutrino complementarity mixing relations the neutrino and quark mixing data seem very different but it results that small deviations from maximal neutrino mixing are nearly equal to the small deviations from minimal mixing of quarks those deviations are quantitatively described by only one new small flavor parameter 00067 | [['flavor', 'physics', 'is', 'about', 'particle', 'massdegeneracydeviations', 'dmd', 'and', 'mixing', 'and', 'especially', 'about', 'hierarchies', 'of', 'those', 'deviations', 'on', 'the', 'one', 'hand', 'there', 'is', 'no', 'established', 'theory', 'of', 'particle', 'flavor', 'at', 'present', 'on', 'the', 'other', 'hand', 'there', 'are', 'growing', 'data', 'indications', 'on', 'interesting', 'empirical', 'flavor', 'regularities', 'that', 'are', 'described', 'here', 'by', 'two', 'semiempirical', 'rules', 'quadratic', 'dmdhierarchy', 'and', 'diracmajorana', 'dmdduality', 'rules', 'first', 'rule', 'unites', 'neutrino', 'solaratmospheric', 'hierarchy', 'parameter', 'with', 'charged', 'lepton', 'cl', 'and', 'quark', 'massratio', 'hierarchies', 'and', 'simultaneously', 'unites', 'the', 'hierarchies', 'in', 'the', 'mixing', 'matrices', 'of', 'quarks', 'and', 'neutrinos', 'the', 'second', 'rule', 'predicts', 'quasidegenerate', 'neutrinos', 'from', 'the', 'fact', 'of', 'cl', 'and', 'quark', 'large', 'mass', 'hierarchy', 'and', 'explains', 'quarkneutrino', 'complementarity', 'mixing', 'relations', 'the', 'neutrino', 'and', 'quark', 'mixing', 'data', 'seem', 'very', 'different', 'but', 'it', 'results', 'that', 'small', 'deviations', 'from', 'maximal', 'neutrino', 'mixing', 'are', 'nearly', 'equal', 'to', 'the', 'small', 'deviations', 'from', 'minimal', 'mixing', 'of', 'quarks', 'those', 'deviations', 'are', 'quantitatively', 'described', 'by', 'only', 'one', 'new', 'small', 'flavor', 'parameter', '00067']] | [-0.06214105761299531, 0.311046631805754, -0.022489223992452026, 0.21775434900851298, -0.08099368136841804, -0.18812983532746633, 0.11504802834630633, 0.28051443374851565, -0.2306098256011804, -0.3193593006487936, 0.05687769413848097, -0.31624250022073586, -0.044630737040812773, 0.14789492059033363, 0.045868201456032695, 0.03288265296413253, 0.09500515381650378, -0.03458584148126344, -0.095785178419513, -0.18482060163592298, 0.3302877744908134, 0.007879841074657936, 0.23586558047992487, 0.05444133997739603, 0.1077837136341259, -0.07128818729271491, -0.0856323714212825, -0.05703657021513209, -0.0725488792892429, 0.06218732901227971, 0.16813941925182008, 0.13056416637264193, 0.07043360275837282, -0.363951425999403, -0.12394338339101524, 0.1275119738218685, 0.12384881931977967, 0.10128092030063271, -0.07640893817491208, -0.26766234554350377, 0.057055019085140275, -0.18407399813023706, -0.11872939510290356, -0.10253566910512746, -0.023836257460837562, -0.04560889027702312, -0.31499806097398203, 0.13380808811324338, 0.016660423182571927, 0.01071578744178017, 0.038273286007655165, -0.24611202345540126, -0.05749234985560179, 0.05728586145676672, 0.18705434994461637, -0.054447991490984955, 0.09045087871296952, -0.13903364417453606, -0.12352348097910483, 0.4441157082406183, -0.05742890667635948, -0.1913804759271443, 0.187779316448917, -0.21383099007420242, -0.17589238273290297, 0.08539881407283247, 0.14041862237888078, 0.03794379979372024, -0.17999395619146527, 0.1224853218406012, -0.13345662691940863, 0.1742825073376298, 0.11206255931717654, 0.026401852595154197, 0.26322266479954126, 0.19966696221070984, 0.07746067518678804, -0.07174668444902636, -0.051508157414694625, -0.1475118795533975, -0.34823035791516305, -0.04230662434361875, -0.12694660757745926, 0.041560780420744174, -0.14259703854942926, -0.10317065281793475, 0.39520460394521556, 0.105248589500164, 0.1885254044182754, 0.04835496353839214, 0.23369668141628305, 0.07349244094298532, 0.10591378868867954, 0.04549556583787004, 0.314267694245403, 0.18266486681066454, 0.12144084441786011, -0.23893967254261952, 0.03161207330723603, 0.07999437264748849] |
708.3816 | Constraining the equation of state of supra-nuclear dense matter from
XMM-Newton observations of neutron stars in globular clusters | We report on the detailed modelling of the X-ray spectra of three likely
neutron stars. The neutron stars, observed with XMM-Newton are found in three
quiescent X-ray binaries in the globular clusters: omega Cen, M 13 and NGC
2808. Whether they are accreting at very low rates or radiating energy from an
accretion heated core, their X-ray spectra are expected to be those of a
hydrogen atmosphere. We use and compare publicly available hydrogen atmosphere
models, with constant and varying surface gravities to constrain the masses and
radii of the neutron stars. Thanks to the high XMM-Newton throughput, and the
accurate distances available for these clusters, using the latest science
analysis software release and calibration of the XMM-Newton EPIC cameras, we
derive the most stringent constraints on the masses and radii of the neutron
stars obtained to date from these systems. A comparison of the models indicate
that previously used hydrogen atmosphere models (assuming constant surface
gravity) tend to underestimate the mass and overestimate the radius of neutron
stars. Our data constrain the allowed equations of state to those which concern
normal nucleonic matter and one possible strange quark matter model, thus
constraining radii to be from 8 km and masses up to 2.4 M$_\odot$.
| astro-ph | we report on the detailed modelling of the xray spectra of three likely neutron stars the neutron stars observed with xmmnewton are found in three quiescent xray binaries in the globular clusters omega cen m 13 and ngc 2808 whether they are accreting at very low rates or radiating energy from an accretion heated core their xray spectra are expected to be those of a hydrogen atmosphere we use and compare publicly available hydrogen atmosphere models with constant and varying surface gravities to constrain the masses and radii of the neutron stars thanks to the high xmmnewton throughput and the accurate distances available for these clusters using the latest science analysis software release and calibration of the xmmnewton epic cameras we derive the most stringent constraints on the masses and radii of the neutron stars obtained to date from these systems a comparison of the models indicate that previously used hydrogen atmosphere models assuming constant surface gravity tend to underestimate the mass and overestimate the radius of neutron stars our data constrain the allowed equations of state to those which concern normal nucleonic matter and one possible strange quark matter model thus constraining radii to be from 8 km and masses up to 24 m_odot | [['we', 'report', 'on', 'the', 'detailed', 'modelling', 'of', 'the', 'xray', 'spectra', 'of', 'three', 'likely', 'neutron', 'stars', 'the', 'neutron', 'stars', 'observed', 'with', 'xmmnewton', 'are', 'found', 'in', 'three', 'quiescent', 'xray', 'binaries', 'in', 'the', 'globular', 'clusters', 'omega', 'cen', 'm', '13', 'and', 'ngc', '2808', 'whether', 'they', 'are', 'accreting', 'at', 'very', 'low', 'rates', 'or', 'radiating', 'energy', 'from', 'an', 'accretion', 'heated', 'core', 'their', 'xray', 'spectra', 'are', 'expected', 'to', 'be', 'those', 'of', 'a', 'hydrogen', 'atmosphere', 'we', 'use', 'and', 'compare', 'publicly', 'available', 'hydrogen', 'atmosphere', 'models', 'with', 'constant', 'and', 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708.3817 | Fractionally Quantized Hall Effect: Liquid-Crystal Ground-State and it
Excitations | It is shown that the ground-state and the lowest excited-states of
two-dimensional electron system (2DES), with ion jellium background, correspond
to partial crystal-like (with the period $L_{x}^{\square}=\sqrt{2 m \pi}
\ell_{0}$) correlation order among $N$ electrons of the main region (MR; $L_{x}
\times L_{y}$). Many-body variational ground-state wave function of 2DES is
presented at the fractional and the integral filling factors $\nu=1/m$;
$m=2\ell+1$ and $\ell=0, 1, 2,...$. The ground-state manifests the broken
symmetry liquid-crystal state with 2DES density that is periodic along the $y-$
direction, with the period $L_{x}^{\square}/m$, and independent of $x$. At
$m=3, 5$, the ground-state has essentially lower energy per electron than the
Laughlin, uniform liquid, ground-state; the same holds at $m=1$. At $m \geq 3$,
the compound form of the many-body ground-state wave function leads to the
compound structure of each electron within the main strip (MS; $L_{x}^{\square}
\times L_{y}$). Obtained compound exciton and compound spin-exciton states show
finite excitation gaps. The excited compound electron (hole) is composed,
within MS, from $m$ strongly correlated quasielectrons (quasiholes) of the
total charge $e/m$ ($-e/m$) each. The activation gap is obtained: it is given
by the excitation gap of relevant compound exciton, at $m \geq 3$, and by the
gap of pertinent compound spin-exciton, at $m=1$. Quantized Hall conductance
$\sigma_{H}=e^{2}/(2 m \pi \hbar)$ is obtained. The theory is in good agreement
with experiments.
| cond-mat.mes-hall cond-mat.str-el | it is shown that the groundstate and the lowest excitedstates of twodimensional electron system 2des with ion jellium background correspond to partial crystallike with the period l_xsquaresqrt2 m pi ell_0 correlation order among n electrons of the main region mr l_x times l_y manybody variational groundstate wave function of 2des is presented at the fractional and the integral filling factors nu1m m2ell1 and ell0 1 2 the groundstate manifests the broken symmetry liquidcrystal state with 2des density that is periodic along the y direction with the period l_xsquarem and independent of x at m3 5 the groundstate has essentially lower energy per electron than the laughlin uniform liquid groundstate the same holds at m1 at m geq 3 the compound form of the manybody groundstate wave function leads to the compound structure of each electron within the main strip ms l_xsquare times l_y obtained compound exciton and compound spinexciton states show finite excitation gaps the excited compound electron hole is composed within ms from m strongly correlated quasielectrons quasiholes of the total charge em em each the activation gap is obtained it is given by the excitation gap of relevant compound exciton at m geq 3 and by the gap of pertinent compound spinexciton at m1 quantized hall conductance sigma_he22 m pi hbar is obtained the theory is in good agreement with experiments | [['it', 'is', 'shown', 'that', 'the', 'groundstate', 'and', 'the', 'lowest', 'excitedstates', 'of', 'twodimensional', 'electron', 'system', '2des', 'with', 'ion', 'jellium', 'background', 'correspond', 'to', 'partial', 'crystallike', 'with', 'the', 'period', 'l_xsquaresqrt2', 'm', 'pi', 'ell_0', 'correlation', 'order', 'among', 'n', 'electrons', 'of', 'the', 'main', 'region', 'mr', 'l_x', 'times', 'l_y', 'manybody', 'variational', 'groundstate', 'wave', 'function', 'of', '2des', 'is', 'presented', 'at', 'the', 'fractional', 'and', 'the', 'integral', 'filling', 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708.3818 | All-sky search for periodic gravitational waves in LIGO S4 data | We report on an all-sky search with the LIGO detectors for periodic
gravitational waves in the frequency range 50-1000 Hz and with the frequency's
time derivative in the range -1.0E-8 Hz/s to zero. Data from the fourth LIGO
science run (S4) have been used in this search. Three different semi-coherent
methods of transforming and summing strain power from Short Fourier Transforms
(SFTs) of the calibrated data have been used. The first, known as "StackSlide",
averages normalized power from each SFT. A "weighted Hough" scheme is also
developed and used, and which also allows for a multi-interferometer search.
The third method, known as "PowerFlux", is a variant of the StackSlide method
in which the power is weighted before summing. In both the weighted Hough and
PowerFlux methods, the weights are chosen according to the noise and detector
antenna-pattern to maximize the signal-to-noise ratio. The respective
advantages and disadvantages of these methods are discussed. Observing no
evidence of periodic gravitational radiation, we report upper limits; we
interpret these as limits on this radiation from isolated rotating neutron
stars. The best population-based upper limit with 95% confidence on the
gravitational-wave strain amplitude, found for simulated sources distributed
isotropically across the sky and with isotropically distributed spin-axes, is
4.28E-24 (near 140 Hz). Strict upper limits are also obtained for small patches
on the sky for best-case and worst-case inclinations of the spin axes.
| gr-qc astro-ph | we report on an allsky search with the ligo detectors for periodic gravitational waves in the frequency range 501000 hz and with the frequencys time derivative in the range 10e8 hzs to zero data from the fourth ligo science run s4 have been used in this search three different semicoherent methods of transforming and summing strain power from short fourier transforms sfts of the calibrated data have been used the first known as stackslide averages normalized power from each sft a weighted hough scheme is also developed and used and which also allows for a multiinterferometer search the third method known as powerflux is a variant of the stackslide method in which the power is weighted before summing in both the weighted hough and powerflux methods the weights are chosen according to the noise and detector antennapattern to maximize the signaltonoise ratio the respective advantages and disadvantages of these methods are discussed observing no evidence of periodic gravitational radiation we report upper limits we interpret these as limits on this radiation from isolated rotating neutron stars the best populationbased upper limit with 95 confidence on the gravitationalwave strain amplitude found for simulated sources distributed isotropically across the sky and with isotropically distributed spinaxes is 428e24 near 140 hz strict upper limits are also obtained for small patches on the sky for bestcase and worstcase inclinations of the spin axes | [['we', 'report', 'on', 'an', 'allsky', 'search', 'with', 'the', 'ligo', 'detectors', 'for', 'periodic', 'gravitational', 'waves', 'in', 'the', 'frequency', 'range', '501000', 'hz', 'and', 'with', 'the', 'frequencys', 'time', 'derivative', 'in', 'the', 'range', '10e8', 'hzs', 'to', 'zero', 'data', 'from', 'the', 'fourth', 'ligo', 'science', 'run', 's4', 'have', 'been', 'used', 'in', 'this', 'search', 'three', 'different', 'semicoherent', 'methods', 'of', 'transforming', 'and', 'summing', 'strain', 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708.3819 | Line shift, line asymmetry, and the 6Li/7Li isotopic ratio determination | Context: Line asymmetries are generated by convective Doppler shifts in
stellar atmospheres, especially in metal-poor stars, where convective motions
penetrate to higher atmospheric levels. Such asymmetries are usually neglected
in abundance analyses. The determination of the 6Li/7Li isotopic ratio is prone
to suffering from such asymmetries, as the contribution of 6Li is a slight
blending reinforcement of the red wing of each component of the corresponding
7Li line, with respect to its blue wing. Aims: The present paper studies the
halo star HD 74000 and estimates the impact of convection-related asymmetries
on the Li isotopic ratio determination. Method: Two methods are used to meet
this aim. The first, which is purely empirical, consists in deriving a template
profile from another element that can be assumed to originate in the same
stellar atmospheric layers as Li I, producing absorption lines of approximately
the same equivalent width as individual components of the 7Li I resonance line.
The second method consists in conducting the abundance analysis based on NLTE
line formation in a 3D hydrodynamical model atmosphere, taking into account the
effects of photospheric convection. Results: The results of the first method
show that the convective asymmetry generates an excess absorption in the red
wing of the 7Li absorption feature that mimics the presence of 6Li at a level
comparable to the hitherto published values. This opens the possibility that
only an upper limit on 6Li/7Li has thus far been derived. The second method
confirms these findings. Conclusions: From this work, it appears that a
systematic reappraisal of former determinations of 6Li abundances in halo stars
is warranted.
| astro-ph | context line asymmetries are generated by convective doppler shifts in stellar atmospheres especially in metalpoor stars where convective motions penetrate to higher atmospheric levels such asymmetries are usually neglected in abundance analyses the determination of the 6li7li isotopic ratio is prone to suffering from such asymmetries as the contribution of 6li is a slight blending reinforcement of the red wing of each component of the corresponding 7li line with respect to its blue wing aims the present paper studies the halo star hd 74000 and estimates the impact of convectionrelated asymmetries on the li isotopic ratio determination method two methods are used to meet this aim the first which is purely empirical consists in deriving a template profile from another element that can be assumed to originate in the same stellar atmospheric layers as li i producing absorption lines of approximately the same equivalent width as individual components of the 7li i resonance line the second method consists in conducting the abundance analysis based on nlte line formation in a 3d hydrodynamical model atmosphere taking into account the effects of photospheric convection results the results of the first method show that the convective asymmetry generates an excess absorption in the red wing of the 7li absorption feature that mimics the presence of 6li at a level comparable to the hitherto published values this opens the possibility that only an upper limit on 6li7li has thus far been derived the second method confirms these findings conclusions from this work it appears that a systematic reappraisal of former determinations of 6li abundances in halo stars is warranted | [['context', 'line', 'asymmetries', 'are', 'generated', 'by', 'convective', 'doppler', 'shifts', 'in', 'stellar', 'atmospheres', 'especially', 'in', 'metalpoor', 'stars', 'where', 'convective', 'motions', 'penetrate', 'to', 'higher', 'atmospheric', 'levels', 'such', 'asymmetries', 'are', 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708.382 | Vacuum polarization for lukewarm black holes | We compute the renormalized expectation value of the square of a quantum
scalar field on a Reissner-Nordstrom-de Sitter black hole in which the
temperatures of the event and cosmological horizons are equal (`lukewarm' black
hole). Our numerical calculations for a thermal state at the same temperature
as the two horizons indicate that this renormalized expectation value is
regular on both the event and cosmological horizons. We are able to show
analytically, using an approximation for the field modes near the horizons,
that this is indeed the case.
| gr-qc | we compute the renormalized expectation value of the square of a quantum scalar field on a reissnernordstromde sitter black hole in which the temperatures of the event and cosmological horizons are equal lukewarm black hole our numerical calculations for a thermal state at the same temperature as the two horizons indicate that this renormalized expectation value is regular on both the event and cosmological horizons we are able to show analytically using an approximation for the field modes near the horizons that this is indeed the case | [['we', 'compute', 'the', 'renormalized', 'expectation', 'value', 'of', 'the', 'square', 'of', 'a', 'quantum', 'scalar', 'field', 'on', 'a', 'reissnernordstromde', 'sitter', 'black', 'hole', 'in', 'which', 'the', 'temperatures', 'of', 'the', 'event', 'and', 'cosmological', 'horizons', 'are', 'equal', 'lukewarm', 'black', 'hole', 'our', 'numerical', 'calculations', 'for', 'a', 'thermal', 'state', 'at', 'the', 'same', 'temperature', 'as', 'the', 'two', 'horizons', 'indicate', 'that', 'this', 'renormalized', 'expectation', 'value', 'is', 'regular', 'on', 'both', 'the', 'event', 'and', 'cosmological', 'horizons', 'we', 'are', 'able', 'to', 'show', 'analytically', 'using', 'an', 'approximation', 'for', 'the', 'field', 'modes', 'near', 'the', 'horizons', 'that', 'this', 'is', 'indeed', 'the', 'case']] | [-0.14672901035532698, 0.12836779388160868, -0.1032854341366596, 0.12973519887818002, -0.031273462825679575, -0.09167222540033446, -0.01301710867729766, 0.32188050145947045, -0.1481485610918795, -0.2472873730370882, 0.15151541823944098, -0.3425095565014936, -0.07624065863161252, 0.20495378398122374, -0.00540578003501755, 0.03712435880269127, 0.007723157212470026, 0.10881489774562825, -0.10358189426940577, -0.2531319571038087, 0.3822114828428061, 0.10913915086896213, 0.23753439555822434, 0.03997321315805546, 0.1261785118305392, -0.023016151832951897, 0.08240284659396643, 0.10400042741896649, -0.18881254732135774, 0.026290295506431454, 0.19265138153147338, 0.06788666375067043, 0.21342165982243658, -0.3839215025220109, -0.21000345094108033, 0.07530094853377547, 0.12736342999891476, 0.1798475618780612, -0.07834569611265485, -0.25861577876715053, 0.0738843969315633, -0.19690793813152732, -0.15304255240393438, -0.05727518540432398, 0.019184067484055614, -0.08538177971535459, -0.2553619747745922, 0.11353001705017583, -0.0022746369579871154, -0.061059140930191116, -0.14705031351775102, -0.07059083761240559, -0.027749741056548625, 0.09086174173708791, 0.12859299335903562, -0.004045496273239882, 0.1596242049441341, -0.10613365437642767, -0.13515142030377025, 0.31681985305301075, -0.09189961162320841, -0.16912364837681426, 0.1446011298089877, -0.24542779914884902, -0.06218996079338864, 0.10687778916627426, 0.11038451745233702, 0.20290141890424934, -0.13012634500347334, 0.13986834968124442, -0.003940159711858322, 0.13763724303611652, 0.0744611291942754, 0.023553085866673238, 0.36255272289459733, 0.07560676853333054, 0.04924218251701744, 0.1221394541769706, -0.07836032548555355, -0.13708696210350113, -0.368459179034007, -0.18039841367595497, -0.21850802303002825, 0.07819084733210761, -0.1957206904213078, -0.23039114880429087, 0.356749363757413, 0.16232027815676284, 0.17595912466874752, 0.08931977728558384, 0.25433654329557526, 0.12020265013942945, 0.024854068237560235, 0.1566638808547594, 0.3524785996789391, 0.07269129896236734, 0.1300353393408245, -0.2858384593400633, -0.041991755644651664, 0.08186590877072565] |
708.3821 | Fundamental and composite scalars from extra dimensions | We discuss a scenario consisting of an effective 4D theory containing
fundamental and composite fields. The strong dynamics sector responsible for
the compositeness is assumed to be of extra dimensional origin. In the 4D
effective theory the SM fermion and gauge fields are taken as fundamental
fields. The scalar sector of the theory resembles a bosonic topcolor in the
sense there are two scalar Higgs fields, a composite scalar field and a
fundamental gauge-Higgs unification scalar. A detailed analysis of the scalar
spectrum is presented in order to explore the parameter space consistent with
experiment. It is found that, under the model assumptions, the acceptable
parameter space is quite constrained. As a part of our phenomenological study
of the model, we evaluate the branching ratio of the lightest Higgs boson and
find that our model predicts a large FCNC mode h -> tc, which can be as large
as O(10^{-3}). Similarly, a large BR for the top FCNC decay is obtained, namely
B.R.(t -> c + H) \simeq 10^{-4}
| hep-ph | we discuss a scenario consisting of an effective 4d theory containing fundamental and composite fields the strong dynamics sector responsible for the compositeness is assumed to be of extra dimensional origin in the 4d effective theory the sm fermion and gauge fields are taken as fundamental fields the scalar sector of the theory resembles a bosonic topcolor in the sense there are two scalar higgs fields a composite scalar field and a fundamental gaugehiggs unification scalar a detailed analysis of the scalar spectrum is presented in order to explore the parameter space consistent with experiment it is found that under the model assumptions the acceptable parameter space is quite constrained as a part of our phenomenological study of the model we evaluate the branching ratio of the lightest higgs boson and find that our model predicts a large fcnc mode h tc which can be as large as o103 similarly a large br for the top fcnc decay is obtained namely brt c h simeq 104 | [['we', 'discuss', 'a', 'scenario', 'consisting', 'of', 'an', 'effective', '4d', 'theory', 'containing', 'fundamental', 'and', 'composite', 'fields', 'the', 'strong', 'dynamics', 'sector', 'responsible', 'for', 'the', 'compositeness', 'is', 'assumed', 'to', 'be', 'of', 'extra', 'dimensional', 'origin', 'in', 'the', '4d', 'effective', 'theory', 'the', 'sm', 'fermion', 'and', 'gauge', 'fields', 'are', 'taken', 'as', 'fundamental', 'fields', 'the', 'scalar', 'sector', 'of', 'the', 'theory', 'resembles', 'a', 'bosonic', 'topcolor', 'in', 'the', 'sense', 'there', 'are', 'two', 'scalar', 'higgs', 'fields', 'a', 'composite', 'scalar', 'field', 'and', 'a', 'fundamental', 'gaugehiggs', 'unification', 'scalar', 'a', 'detailed', 'analysis', 'of', 'the', 'scalar', 'spectrum', 'is', 'presented', 'in', 'order', 'to', 'explore', 'the', 'parameter', 'space', 'consistent', 'with', 'experiment', 'it', 'is', 'found', 'that', 'under', 'the', 'model', 'assumptions', 'the', 'acceptable', 'parameter', 'space', 'is', 'quite', 'constrained', 'as', 'a', 'part', 'of', 'our', 'phenomenological', 'study', 'of', 'the', 'model', 'we', 'evaluate', 'the', 'branching', 'ratio', 'of', 'the', 'lightest', 'higgs', 'boson', 'and', 'find', 'that', 'our', 'model', 'predicts', 'a', 'large', 'fcnc', 'mode', 'h', 'tc', 'which', 'can', 'be', 'as', 'large', 'as', 'o103', 'similarly', 'a', 'large', 'br', 'for', 'the', 'top', 'fcnc', 'decay', 'is', 'obtained', 'namely', 'brt', 'c', 'h', 'simeq', '104']] | [-0.13934105457857263, 0.2261351942715371, -0.029492749512779068, 0.1415808891985532, -0.07102861469863993, -0.18499498429472547, 0.01223461160293208, 0.283460803134984, -0.19195441788696074, -0.29356048028938564, 0.055586102193485136, -0.2287273726156767, -0.11599679617211223, 0.12272985840177006, 0.04304287443849179, 0.014001920566114271, 0.00929734173247658, 0.06251236170331151, -0.011581993313977518, -0.229073790781458, 0.3023556029670928, 0.009958922745188675, 0.23480537370217583, 0.048057278873138015, 0.06218779210494944, -0.004217910403610173, 0.00898440908191793, -0.007319920410539573, -0.11465877065961376, 0.09879523011889443, 0.16305593393900128, 0.07275161046691868, 0.1625669738558312, -0.3207892728969455, -0.20700567265052394, 0.1315853430311678, 0.14941523064780665, 0.08497972703051083, -0.049437786441251456, -0.28747970624041397, 0.0981268434510398, -0.16306708544262696, -0.12721325774433045, -0.07257082935419853, -0.020404108190566796, -0.12642729473833264, -0.373556060041862, 0.07106795918767296, -0.041837028342759215, 0.040933345612811756, -0.017849701498803425, -0.14582173762764467, -0.07125147009627467, 0.021812573165060526, 0.15983911891150884, 0.0621462055209867, 0.1567890692378832, -0.19899202052224008, -0.11698314870906859, 0.44422311349266985, -0.17683394557125978, -0.18518512016050068, 0.181681936803128, -0.14025600186439724, -0.1462497989224033, 0.10400656358821385, 0.16980919798875385, 0.09721457777567298, -0.14158284441422087, 0.2321030113674947, -0.08580224013169217, 0.18707565908847623, 0.0037591540246236935, 0.05142396503669513, 0.2513363234451916, 0.19411929453307963, 0.015962241865492548, 0.09830954187151314, -0.034415588593559275, -0.12009433001638894, -0.41738456756532955, -0.1731296803701265, -0.09197208318275159, 0.06312552736356787, -0.10915955207878668, -0.13600406267242618, 0.38698427623463233, 0.11057627610322256, 0.2375570209921304, -0.0021271684132684694, 0.24118054594356478, 0.12915059698448259, 0.09389315821098568, 0.023036126901552708, 0.30055614345965076, 0.17533098449593926, 0.09325967941444412, -0.2042111656656601, -0.04244666725834719, 0.05531365566687793] |
708.3822 | Critical Topology for Optimization on the Symplectic Group | Optimization problems over compact Lie groups have been extensively studied
due to their broad applications in linear programming and optimal control. This
paper analyzes least square problems over a noncompact Lie group, the
symplectic group $\Sp(2N,\R)$, which can be used to assess the optimality of
control over dynamical transformations in classical mechanics and quantum
optics. The critical topology for minimizing the Frobenius distance from a
target symplectic transformation is solved. It is shown that the critical
points include a unique local minimum and a number of saddle points. The
topology is more complicated than those of previously studied problems on
compact Lie groups such as the orthogonal and unitary groups because the
incompatibility of the Frobenius norm with the pseudo-Riemannian structure on
the symplectic group brings significant nonlinearity to the problem.
Nonetheless, the lack of traps guarantees the global convergence of local
optimization algorithms.
| math-ph math.MP | optimization problems over compact lie groups have been extensively studied due to their broad applications in linear programming and optimal control this paper analyzes least square problems over a noncompact lie group the symplectic group sp2nr which can be used to assess the optimality of control over dynamical transformations in classical mechanics and quantum optics the critical topology for minimizing the frobenius distance from a target symplectic transformation is solved it is shown that the critical points include a unique local minimum and a number of saddle points the topology is more complicated than those of previously studied problems on compact lie groups such as the orthogonal and unitary groups because the incompatibility of the frobenius norm with the pseudoriemannian structure on the symplectic group brings significant nonlinearity to the problem nonetheless the lack of traps guarantees the global convergence of local optimization algorithms | [['optimization', 'problems', 'over', 'compact', 'lie', 'groups', 'have', 'been', 'extensively', 'studied', 'due', 'to', 'their', 'broad', 'applications', 'in', 'linear', 'programming', 'and', 'optimal', 'control', 'this', 'paper', 'analyzes', 'least', 'square', 'problems', 'over', 'a', 'noncompact', 'lie', 'group', 'the', 'symplectic', 'group', 'sp2nr', 'which', 'can', 'be', 'used', 'to', 'assess', 'the', 'optimality', 'of', 'control', 'over', 'dynamical', 'transformations', 'in', 'classical', 'mechanics', 'and', 'quantum', 'optics', 'the', 'critical', 'topology', 'for', 'minimizing', 'the', 'frobenius', 'distance', 'from', 'a', 'target', 'symplectic', 'transformation', 'is', 'solved', 'it', 'is', 'shown', 'that', 'the', 'critical', 'points', 'include', 'a', 'unique', 'local', 'minimum', 'and', 'a', 'number', 'of', 'saddle', 'points', 'the', 'topology', 'is', 'more', 'complicated', 'than', 'those', 'of', 'previously', 'studied', 'problems', 'on', 'compact', 'lie', 'groups', 'such', 'as', 'the', 'orthogonal', 'and', 'unitary', 'groups', 'because', 'the', 'incompatibility', 'of', 'the', 'frobenius', 'norm', 'with', 'the', 'pseudoriemannian', 'structure', 'on', 'the', 'symplectic', 'group', 'brings', 'significant', 'nonlinearity', 'to', 'the', 'problem', 'nonetheless', 'the', 'lack', 'of', 'traps', 'guarantees', 'the', 'global', 'convergence', 'of', 'local', 'optimization', 'algorithms']] | [-0.16988970313589866, 0.010523685092468642, -0.10762458006360652, 0.08766959129166531, -0.10764619360108757, -0.1383373770942045, 0.01673681922370128, 0.370026261608776, -0.33588269632309675, -0.28107115623101386, 0.14683828847814262, -0.2217221548845474, -0.172324562585143, 0.2063465448639666, -0.1294520928155786, 0.08021385815098053, 0.03493370516096345, 0.08180069598731482, -0.15719589460948352, -0.2774964761613066, 0.34790241572773084, 0.02643504569601242, 0.26532928373975057, 0.0073900773018572685, 0.12220832074267997, 0.006574221246410161, 0.010101051768288016, 0.02911635973982306, -0.07421910387372715, 0.11522182534665465, 0.3091268883840207, 0.07912486531131435, 0.3057190617303907, -0.39203648981896955, -0.21827343800234505, 0.185330195501188, 0.13336007051273352, 0.04769569012165044, -0.03820066971547931, -0.2958954234038376, 0.08566177492159316, -0.10779009440900861, -0.11245960696962559, -0.0594726333899113, 0.011446121876360849, 0.019450938041296065, -0.19923030706518652, 0.02602991959921989, 0.048179795437439076, 0.11315519471665741, -0.06509950675859323, -0.10293529069490938, -0.00700145694524205, 0.10989111606290357, 0.00502047724795476, 0.035029837395995855, 0.13679619682564712, -0.07642584644781891, -0.14107505919188648, 0.4347543623039706, 0.027854088948010433, -0.2223570149346617, 0.1926512597128749, -0.12119760255316375, -0.14981902163385208, 0.1465610597418466, 0.18629786018815744, 0.13661716145321, -0.11639740469723216, 0.16075993642213385, -0.07012567440849832, 0.09340631189600875, 0.057079658610746264, 0.0305770850326452, 0.129648342028506, 0.13037542851816397, 0.19541436399029205, 0.0912943276400458, 0.012894352703571914, -0.13437590969260782, -0.2799825730681833, -0.13535371908316543, -0.1567268100204981, 0.07148368026699042, -0.12352499332135064, -0.1596802725938081, 0.4056421080345495, 0.06947874885574695, 0.1473619962343946, 0.06017863793870978, 0.2341828626409147, 0.0961606196085793, 0.10822856944772259, 0.1060966962929039, 0.2189704662838873, 0.22218673635830377, 0.010683631292421423, -0.21654226760761552, -0.00984433837260844, 0.10168307860537122] |
708.3823 | Reduction without reduction: Adding KK-monopoles to five dimensional
stationary axisymmetric solutions | We present a general method to add KK-monopole charge to any asymptotically
flat stationary axisymmetric solution of five dimensional General Relativity.
The technique exploits the underlying SL(3,R) invariance of the system by
identifying a particular element of the symmetry group which changes the
asymptotic boundary condition and adds KK-monopole charge. Furthermore, we
develop a set of technical tools which allow us to apply the SL(3,R)
transformations to solutions produced by the Inverse Scattering method. As an
example of our methods, we construct the exact solution describing a static
black ring carrying KK-monopole charge.
| hep-th | we present a general method to add kkmonopole charge to any asymptotically flat stationary axisymmetric solution of five dimensional general relativity the technique exploits the underlying sl3r invariance of the system by identifying a particular element of the symmetry group which changes the asymptotic boundary condition and adds kkmonopole charge furthermore we develop a set of technical tools which allow us to apply the sl3r transformations to solutions produced by the inverse scattering method as an example of our methods we construct the exact solution describing a static black ring carrying kkmonopole charge | [['we', 'present', 'a', 'general', 'method', 'to', 'add', 'kkmonopole', 'charge', 'to', 'any', 'asymptotically', 'flat', 'stationary', 'axisymmetric', 'solution', 'of', 'five', 'dimensional', 'general', 'relativity', 'the', 'technique', 'exploits', 'the', 'underlying', 'sl3r', 'invariance', 'of', 'the', 'system', 'by', 'identifying', 'a', 'particular', 'element', 'of', 'the', 'symmetry', 'group', 'which', 'changes', 'the', 'asymptotic', 'boundary', 'condition', 'and', 'adds', 'kkmonopole', 'charge', 'furthermore', 'we', 'develop', 'a', 'set', 'of', 'technical', 'tools', 'which', 'allow', 'us', 'to', 'apply', 'the', 'sl3r', 'transformations', 'to', 'solutions', 'produced', 'by', 'the', 'inverse', 'scattering', 'method', 'as', 'an', 'example', 'of', 'our', 'methods', 'we', 'construct', 'the', 'exact', 'solution', 'describing', 'a', 'static', 'black', 'ring', 'carrying', 'kkmonopole', 'charge']] | [-0.13969489145943875, 0.03636369402210544, -0.1233987121952958, 0.07053480937235779, -0.10368268919848306, -0.15448413328117422, 0.03390423410762382, 0.2999998932273718, -0.22441198326326828, -0.2622239981134552, 0.11874027265816607, -0.25077487667521803, -0.15072545576940782, 0.12542352423832942, -0.04380122236707198, 0.05841770642987823, 0.01004100533362518, 0.03156236582185312, -0.11095026796383242, -0.19092365746857018, 0.3542141106420307, 0.03015091623209657, 0.2863350199355233, -0.015356620638481071, 0.14956045135234794, 0.02413167497293363, -0.03747365628594473, 0.04872186391824676, -0.15255853336464653, 0.14376973199493173, 0.22286807006144876, 0.10112775563793157, 0.203455017549136, -0.429941970734827, -0.18064452078874393, 0.09267014868417255, 0.11570879148559705, 0.1977862063369724, -0.09423503451930579, -0.270848344210335, 0.09545662586567222, -0.19542058017505434, -0.2517663060877753, -0.13430513420032078, 0.0033743848112882465, -0.031179760793043722, -0.3015599082404327, 0.04469665823884869, 0.09023156399420533, -0.005105505188268619, -0.10409513511694968, -0.029137688854168498, -0.01927035586828346, 0.11249980162228307, 0.09373046729152881, 0.012749506761470148, 0.13211597444274292, -0.05607997611647294, -0.1038716832946946, 0.35219365397408126, -0.054193859949948325, -0.27861166030408874, 0.16731765107201632, -0.13061932987102898, -0.1230982279364941, 0.13971463541039617, 0.14037602540526178, 0.1918232783134426, -0.15506053625315588, 0.1539110510143131, -0.0385866444345103, 0.15716291470353, 0.08427491014002152, 0.004150620647906376, 0.19193387975896237, 0.11575787335944672, 0.085636722500078, 0.15413098997606706, -0.050381064207182934, -0.06545213699561134, -0.35595857752587207, -0.16001828354958605, -0.12026835149354352, 0.10552021693713683, -0.11483650167847569, -0.2150677646139777, 0.41111260656547804, 0.14379369743576434, 0.1091571458945832, 0.034293329270596626, 0.25518109138444145, 0.10717170375980742, 0.04888275359076277, 0.09024533041081922, 0.18815849888919584, 0.15305750154119024, 0.08263074760876035, -0.23734423899722676, -0.04610555840816389, 0.16284809030982997] |
708.3824 | Radio Detection of Neutrinos from Behind a Mountain | We explore the sensitivity of a neutrino detector employing strongly
directional high gain radio antennae to detect the conversion of neutrinos
above $10^{16}$ eV in a mountain or the earth crust. The directionality of the
antennae will allow both, the low threshold and the suppression of background.
This technology would have the advantage that it does not require a suitable
atmosphere as optical detectors do and could therefore be deployed at any
promising place on the planet. In particular one could choose suitable
topographies at latitudes that are matched to promising source candidates.
| astro-ph | we explore the sensitivity of a neutrino detector employing strongly directional high gain radio antennae to detect the conversion of neutrinos above 1016 ev in a mountain or the earth crust the directionality of the antennae will allow both the low threshold and the suppression of background this technology would have the advantage that it does not require a suitable atmosphere as optical detectors do and could therefore be deployed at any promising place on the planet in particular one could choose suitable topographies at latitudes that are matched to promising source candidates | [['we', 'explore', 'the', 'sensitivity', 'of', 'a', 'neutrino', 'detector', 'employing', 'strongly', 'directional', 'high', 'gain', 'radio', 'antennae', 'to', 'detect', 'the', 'conversion', 'of', 'neutrinos', 'above', '1016', 'ev', 'in', 'a', 'mountain', 'or', 'the', 'earth', 'crust', 'the', 'directionality', 'of', 'the', 'antennae', 'will', 'allow', 'both', 'the', 'low', 'threshold', 'and', 'the', 'suppression', 'of', 'background', 'this', 'technology', 'would', 'have', 'the', 'advantage', 'that', 'it', 'does', 'not', 'require', 'a', 'suitable', 'atmosphere', 'as', 'optical', 'detectors', 'do', 'and', 'could', 'therefore', 'be', 'deployed', 'at', 'any', 'promising', 'place', 'on', 'the', 'planet', 'in', 'particular', 'one', 'could', 'choose', 'suitable', 'topographies', 'at', 'latitudes', 'that', 'are', 'matched', 'to', 'promising', 'source', 'candidates']] | [-0.09503827268859842, 0.1676905481920888, -0.05128448278272665, 0.09139211390477915, -0.11910932997031318, -0.11760077098452096, 0.06692971525493488, 0.40362263790341796, -0.1864698545666792, -0.3442139355165343, 0.09880310423441872, -0.27461145358580735, -0.07534094734908513, 0.21403780857586774, -0.025095652688735273, -0.017847048548070253, 0.06623292159819875, 0.018915351477742034, -0.047625561470105764, -0.18188395923984949, 0.2204471663071183, 0.16822479747396002, 0.26643186514215766, 0.09484611508706885, 0.11296186193833829, -0.0702589345615237, 0.013772918166772972, -0.05972792194174823, -0.06195637337335821, 0.0642620598677025, 0.30396047610068516, 0.10818623097973966, 0.21248275663588517, -0.4513380230073967, -0.24693541457095453, 0.14839840870881352, 0.15826358907024868, 0.052258936763410604, -0.07370451020742817, -0.2556138712091632, 0.11551379795456605, -0.173447594557318, -0.14853887254953063, -0.00380023450450471, -0.06446598330011932, 0.03447699607400003, -0.27197944158588044, 0.010972245182793198, 0.0028411039621919713, -0.036362804086898924, -0.03383821692137468, -0.1294280843488792, -0.009527409924895213, 0.11454709973536752, -0.025068281739149042, 0.021723434394125336, 0.1810308360339453, -0.12747876115533854, -0.06269447291169757, 0.38960708721831283, -0.08545560869563532, -0.1255383781928529, 0.24015331112589405, -0.19782673261098324, -0.13707419191937772, 0.17155715973887553, 0.20306440815329552, 0.09147980803954264, -0.14635323021580937, 0.013620841155712422, 0.010513199528338768, 0.19479760535622156, 0.0962427113635806, 0.08139753651239419, 0.33122398913587614, 0.17616842592245227, 0.13801295879567343, 0.03902665793805594, -0.2180454434641707, 0.03505207363876604, -0.25724377989849095, -0.11254538772928138, -0.14833572909476295, 0.05891587801408448, -0.07713623896650519, -0.09940615939777545, 0.3563585772669764, 0.1828560652511735, 0.13286759226673073, -0.029186505581482603, 0.29775291242666785, 0.071270046133538, 0.1267223899122528, 0.030592155092025317, 0.3648479141855753, 0.0544837332776277, 0.13783602004430145, -0.18230215259777602, 0.06360014916587901, -0.03963807193181848] |
708.3825 | Stochastic Fluctuations in Epidemics on Networks | The effects of demographic stochasticity in the long term behaviour of
endemic infectious diseases have been considered for long as a necessary
addition to an underlying deterministic theory. The latter would explain the
regular behaviour of recurrent epidemics, and the former the superimposed noise
of observed incidence patterns. Recently, a stochastic theory based on a
mechanism of resonance with internal noise has shifted the role of
stochasticity closer to the center stage, by showing that the major dynamic
patterns found in the incidence data can be explained as resonant fluctuations,
whose behaviour is largely independent of the amplitude of seasonal forcing,
and by contrast very sensitive to the basic epidemiological parameters. Here we
elaborate on that approach, by adding an ingredient which is missing in
standard epidemic models, the 'mixing network' through which infection may
propagate. We find that spatial correlations have a major effect in the
enhancement of the amplitude and the coherence of the resonant stochastic
fluctuations, providing the ordered patterns of recurrent epidemics, whose
period may differ significantly from that of the small oscillations around the
deterministic equilibrium. We also show that the inclusion of a more realistic,
time correlated, recovery profile instead of exponentially distributed
infectious periods may, even in the random-mixing limit, contribute to the same
effect.
| q-bio.PE | the effects of demographic stochasticity in the long term behaviour of endemic infectious diseases have been considered for long as a necessary addition to an underlying deterministic theory the latter would explain the regular behaviour of recurrent epidemics and the former the superimposed noise of observed incidence patterns recently a stochastic theory based on a mechanism of resonance with internal noise has shifted the role of stochasticity closer to the center stage by showing that the major dynamic patterns found in the incidence data can be explained as resonant fluctuations whose behaviour is largely independent of the amplitude of seasonal forcing and by contrast very sensitive to the basic epidemiological parameters here we elaborate on that approach by adding an ingredient which is missing in standard epidemic models the mixing network through which infection may propagate we find that spatial correlations have a major effect in the enhancement of the amplitude and the coherence of the resonant stochastic fluctuations providing the ordered patterns of recurrent epidemics whose period may differ significantly from that of the small oscillations around the deterministic equilibrium we also show that the inclusion of a more realistic time correlated recovery profile instead of exponentially distributed infectious periods may even in the randommixing limit contribute to the same effect | [['the', 'effects', 'of', 'demographic', 'stochasticity', 'in', 'the', 'long', 'term', 'behaviour', 'of', 'endemic', 'infectious', 'diseases', 'have', 'been', 'considered', 'for', 'long', 'as', 'a', 'necessary', 'addition', 'to', 'an', 'underlying', 'deterministic', 'theory', 'the', 'latter', 'would', 'explain', 'the', 'regular', 'behaviour', 'of', 'recurrent', 'epidemics', 'and', 'the', 'former', 'the', 'superimposed', 'noise', 'of', 'observed', 'incidence', 'patterns', 'recently', 'a', 'stochastic', 'theory', 'based', 'on', 'a', 'mechanism', 'of', 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708.3826 | Trapping radioactive ^{82}Rb in an optical dipole trap and evidence of
spontaneous spin polarization | Optical trapping of selected species of radioactive atoms has great potential
in precision measurements for testing fundamental physics such as EDM, PNC and
parity violating beta-decay asymmetry correlation coefficients. We report
trapping of 10^4 radioactive ^{82}Rb atoms (t_{1/2}=75 s) with a trap lifetime
of ~55 seconds in an optical dipole trap. Transfer efficiency from the
magneto-optical trap was ~14%. We further report the evidence of spontaneous
spin polarization of the atoms in optical dipole trap loading. This advancement
is an important step towards a new generation of precision J-beta correlations
measurements with polarized ^{82}Rb atoms.
| quant-ph nucl-ex physics.atom-ph | optical trapping of selected species of radioactive atoms has great potential in precision measurements for testing fundamental physics such as edm pnc and parity violating betadecay asymmetry correlation coefficients we report trapping of 104 radioactive 82rb atoms t_1275 s with a trap lifetime of 55 seconds in an optical dipole trap transfer efficiency from the magnetooptical trap was 14 we further report the evidence of spontaneous spin polarization of the atoms in optical dipole trap loading this advancement is an important step towards a new generation of precision jbeta correlations measurements with polarized 82rb atoms | [['optical', 'trapping', 'of', 'selected', 'species', 'of', 'radioactive', 'atoms', 'has', 'great', 'potential', 'in', 'precision', 'measurements', 'for', 'testing', 'fundamental', 'physics', 'such', 'as', 'edm', 'pnc', 'and', 'parity', 'violating', 'betadecay', 'asymmetry', 'correlation', 'coefficients', 'we', 'report', 'trapping', 'of', '104', 'radioactive', '82rb', 'atoms', 't_1275', 's', 'with', 'a', 'trap', 'lifetime', 'of', '55', 'seconds', 'in', 'an', 'optical', 'dipole', 'trap', 'transfer', 'efficiency', 'from', 'the', 'magnetooptical', 'trap', 'was', '14', 'we', 'further', 'report', 'the', 'evidence', 'of', 'spontaneous', 'spin', 'polarization', 'of', 'the', 'atoms', 'in', 'optical', 'dipole', 'trap', 'loading', 'this', 'advancement', 'is', 'an', 'important', 'step', 'towards', 'a', 'new', 'generation', 'of', 'precision', 'jbeta', 'correlations', 'measurements', 'with', 'polarized', '82rb', 'atoms']] | [-0.08777535287916417, 0.23646004297346657, 0.03238402658051042, -0.032975713793269315, 0.05561820367027236, -0.18096701106380508, 0.0879847377376712, 0.42018844875628536, -0.21310567165441488, -0.3014349460794145, -0.014602888279351528, -0.3186440304853022, 0.0331059560336618, 0.17189077379526166, 0.054159154965596513, 0.08375213625233459, 0.04559264354326803, -0.03828884001173403, -0.03512064702100242, -0.19682912811960862, 0.18298115122698896, 0.1338376617337496, 0.2919523459049347, 0.12401541338666626, 0.06759567460065465, -3.587264496752101e-05, 0.0371897848950618, -0.10084069482779698, -0.071394369583172, 0.15128755605901065, 0.1801442753361619, 0.05376433211621707, 0.19141447843740816, -0.46401402459520363, -0.1659683863348935, 0.13236474819258665, 0.16123317183076363, 0.2275408923843592, -0.17815794905586896, -0.2886223056677567, -0.09211132002984294, -0.17406417265453417, -0.1596295953343582, -0.10239377907861996, 0.12511926424264422, 0.05777380743023494, -0.3118256446702973, 0.06879799862129046, 0.025329842404259936, 0.16397984458244932, -0.08881441837318403, -0.1381422131140109, 0.07372604563589329, 0.03120697030554647, -0.008049073084966158, 0.03839506947248162, 0.21844708075197716, -0.0996327964771215, -0.12651499966602348, 0.41151628043988475, -0.1139376830390614, -0.034559886153463434, 0.0952561954188201, -0.23773810557980576, -0.11518626716291613, 0.1463960772203079, 0.20885397508011563, 0.09925481647698452, -0.13811762489722637, 0.022472121610442864, -0.009416958286791392, 0.2094334397950898, 0.116894992928871, 0.10725132312180231, 0.29110931105020904, 0.2286938866397933, 0.04324705590514223, 0.1307845982854538, -0.21250226469862316, 0.008076742271204357, -0.27162546215012023, -0.167342662629064, -0.18337986512494314, 0.10837501656193205, -0.04197745313649648, -0.04637851846611896, 0.37676549411338306, 0.09325248976402571, 0.1387809045592566, -0.09621690739067676, 0.31213001900797954, 0.08313414537595869, 0.09026709299170128, -0.06570837096027705, 0.34813090398624214, 0.19541579691450234, 0.10984417030387862, -0.3297524425712333, 0.030381376171768035, -0.015063515170882254] |
708.3827 | Linear frictional forces cause orbits to neither circularize nor precess | For the undamped Kepler potential the lack of precession has historically
been understood in terms of the Runge-Lenz symmetry. For the damped Kepler
problem this result may be understood in terms of the generalization of Poisson
structure to damped systems suggested recently by Tarasov[1]. In this
generalized algebraic structure the orbit-averaged Runge-Lenz vector remains a
constant in the linearly damped Kepler problem to leading order in the damping
coe
| physics.class-ph | for the undamped kepler potential the lack of precession has historically been understood in terms of the rungelenz symmetry for the damped kepler problem this result may be understood in terms of the generalization of poisson structure to damped systems suggested recently by tarasov1 in this generalized algebraic structure the orbitaveraged rungelenz vector remains a constant in the linearly damped kepler problem to leading order in the damping coe | [['for', 'the', 'undamped', 'kepler', 'potential', 'the', 'lack', 'of', 'precession', 'has', 'historically', 'been', 'understood', 'in', 'terms', 'of', 'the', 'rungelenz', 'symmetry', 'for', 'the', 'damped', 'kepler', 'problem', 'this', 'result', 'may', 'be', 'understood', 'in', 'terms', 'of', 'the', 'generalization', 'of', 'poisson', 'structure', 'to', 'damped', 'systems', 'suggested', 'recently', 'by', 'tarasov1', 'in', 'this', 'generalized', 'algebraic', 'structure', 'the', 'orbitaveraged', 'rungelenz', 'vector', 'remains', 'a', 'constant', 'in', 'the', 'linearly', 'damped', 'kepler', 'problem', 'to', 'leading', 'order', 'in', 'the', 'damping', 'coe']] | [-0.1832564883208012, 0.14533969213473885, -0.03958059992531643, 0.07740438366240329, -0.12962672987487167, -0.05992898582617807, -0.01004033480935237, 0.2711266009410953, -0.3207489837180166, -0.2831652592114337, 0.07747670584135716, -0.2254752182703027, -0.17669401736930013, 0.2217613535176497, -0.10304975149440854, 0.0992841913145693, 0.030999827885192215, 0.06247738781659042, -0.04550912372274872, -0.2733995622667648, 0.2907288646708955, 0.07489282381549642, 0.18919568043202162, -0.03607201805639574, 0.08075336964718778, -0.01984825054430129, 0.010350938146824347, 0.008553004138829076, -0.077958676203921, 0.07335404246045715, 0.24108489786329515, 0.04551533602438319, 0.27169831431991254, -0.3443506664651282, -0.26850712293868556, 0.0797579107901958, 0.2495901215246276, 0.15394474833053262, -0.008447767509257091, -0.2799786375972497, 0.04994285899652716, -0.17823933866148925, -0.2401482714134652, -0.06793366568436955, 0.10010540104635499, -0.013419797370100723, -0.19405690812923507, 0.12574158072033348, 0.11775552992955507, 0.08791043564291184, -0.13474324217874228, -0.08682051967137822, -0.011862411697888198, 0.031100898645544314, 0.08855249258853934, 0.05802719259415479, 0.008391834242502227, -0.10055352757712278, -0.10868987573228557, 0.43860100319280343, -0.08903974336606231, -0.23535259006380596, 0.12554257028900526, -0.15837804578682957, -0.152334553648389, 0.13449942498632214, 0.17395799717290655, 0.103918388402877, -0.17190723277470918, 0.13548056221128824, -0.03480147308779552, 0.10204150431844242, 0.09647413198014393, 0.03028500115718035, 0.22684949578936486, 0.126050084904658, 0.04474846834850991, 0.10781375056403168, -0.04654521941762034, -0.12143594402518562, -0.23953405419802842, -0.08297850186799598, -0.18288190454682884, 0.09354007796055692, -0.017684727301136318, -0.1790438769659137, 0.4086077573763974, 0.08054980787154123, 0.18932702425209916, 0.0015284777310786441, 0.2801902273888974, 0.2315775352763012, 0.05649513340733178, 0.0355040632215712, 0.32202191163292704, 0.19616222781855064, 0.13236456636942046, -0.2865154106488369, 0.07174822749734364, 0.0703676618526087] |
708.3828 | Leptogenesis from Pseudo-Scalar Driven Inflation | We examine recent claims for a considerable amount of leptogenesis, in some
inflationary scenarios, through the gravitational anomaly in the lepton number
current. We find that when the short distances contributions are properly
included the amount of lepton number generated is actually much smaller.
| hep-th | we examine recent claims for a considerable amount of leptogenesis in some inflationary scenarios through the gravitational anomaly in the lepton number current we find that when the short distances contributions are properly included the amount of lepton number generated is actually much smaller | [['we', 'examine', 'recent', 'claims', 'for', 'a', 'considerable', 'amount', 'of', 'leptogenesis', 'in', 'some', 'inflationary', 'scenarios', 'through', 'the', 'gravitational', 'anomaly', 'in', 'the', 'lepton', 'number', 'current', 'we', 'find', 'that', 'when', 'the', 'short', 'distances', 'contributions', 'are', 'properly', 'included', 'the', 'amount', 'of', 'lepton', 'number', 'generated', 'is', 'actually', 'much', 'smaller']] | [-0.17308345349209214, 0.23121831676160748, 0.01453861433467616, 0.1498385485055306, -0.08036581621589986, -0.060976242889988826, 0.03397623081268235, 0.3284658577970483, -0.2264044095169414, -0.32627811036019755, 0.04976083168400113, -0.3154356572777033, -0.08065936258803545, 0.199865508755796, -0.03672777986238626, 0.026063037210736762, 0.09565474006178026, 0.006120022513311018, 0.0003500525913709267, -0.3239084150409326, 0.2722462561320175, 0.0520625352457335, 0.22675098741257732, 0.08793696604499762, 0.010050310372290287, -0.06877631461247802, -0.09475870335220614, 0.015905191952531986, -0.1008478325895174, 0.05208239249292423, 0.19083436562637376, 0.15229155675677414, 0.22833099161190065, -0.4690879194319926, -0.22884080577800472, 0.22324786382854322, 0.11875888018403202, 0.1968696300702339, -0.1150852855802937, -0.23941277932714333, 0.10924644105729055, -0.24345238354395737, -0.05505423796024512, -0.04877475903115489, 0.06481170425699516, -0.05408957257697528, -0.2638542737219144, 0.0713871512138708, -0.025787601014599204, 0.0011191423135724935, 0.04714378785468976, -0.1476844274703498, 0.0009150072424249215, 0.04657674018645511, 0.22303280286723748, -0.0162318373225968, 0.1001728142992678, -0.19224953746677123, -0.061700528360564603, 0.38228322684087535, -0.055244071716019374, -0.19352233772356572, 0.12747880903771147, -0.20854191213253548, -0.17011345985387874, 0.11088608687912876, 0.14821119174699893, 0.0702400228904232, -0.12444014950630265, 0.10334222374314611, -0.060112960170954466, 0.14473886994793164, 0.05699870136397129, 0.06595446255100383, 0.2921854362569072, 0.12379569955572317, 0.04239027686840431, 0.10248153246092526, -0.06790399551391602, -0.06506672687828541, -0.4138344534334134, -0.09671270165761764, -0.17280774572017518, 0.07737165592102842, -0.08434765962672165, -0.08234669321047311, 0.4052963442253796, 0.20318423215807838, 0.25324766676534305, 0.02976471628062427, 0.32850057644430886, 0.07478008550242521, 0.09726074181327765, 0.04851979151664471, 0.300840192170819, 0.06672926975244825, 0.10853570846798406, -0.23603910555936058, 0.08000646133917723, 0.03875560884956609] |
708.3829 | A Non Parametric Model for the Forecasting of the Venezuelan Oil Prices | A neural net model for forecasting the prices of Venezuelan crude oil is
proposed. The inputs of the neural net are selected by reference to a dynamic
system model of oil prices by Mashayekhi (1995, 2001) and its performance is
evaluated using two criteria: the Excess Profitability test by Anatoliev and
Gerko (2005) and the characteristics of the equity curve generated by a trading
strategy based on the neural net predictions.
-----
Se introduce aqui un modelo no parametrico para pronosticar los precios del
petroleo Venezolano cuyos insumos son seleccionados en base a un sistema
dinamico que explica los precios en terminos de dichos insumos. Se describe el
proceso de recoleccion y pre-procesamiento de datos y la corrida de la red y se
evaluan sus pronosticos a traves de un test estadistico de predictibilidad y de
las caracteristicas del Equity Curve inducido por la estrategia de compraventa
bursatil generada por dichos pronosticos.
| cs.CE cs.NE | a neural net model for forecasting the prices of venezuelan crude oil is proposed the inputs of the neural net are selected by reference to a dynamic system model of oil prices by mashayekhi 1995 2001 and its performance is evaluated using two criteria the excess profitability test by anatoliev and gerko 2005 and the characteristics of the equity curve generated by a trading strategy based on the neural net predictions se introduce aqui un modelo no parametrico para pronosticar los precios del petroleo venezolano cuyos insumos son seleccionados en base a un sistema dinamico que explica los precios en terminos de dichos insumos se describe el proceso de recoleccion y preprocesamiento de datos y la corrida de la red y se evaluan sus pronosticos a traves de un test estadistico de predictibilidad y de las caracteristicas del equity curve inducido por la estrategia de compraventa bursatil generada por dichos pronosticos | [['a', 'neural', 'net', 'model', 'for', 'forecasting', 'the', 'prices', 'of', 'venezuelan', 'crude', 'oil', 'is', 'proposed', 'the', 'inputs', 'of', 'the', 'neural', 'net', 'are', 'selected', 'by', 'reference', 'to', 'a', 'dynamic', 'system', 'model', 'of', 'oil', 'prices', 'by', 'mashayekhi', '1995', '2001', 'and', 'its', 'performance', 'is', 'evaluated', 'using', 'two', 'criteria', 'the', 'excess', 'profitability', 'test', 'by', 'anatoliev', 'and', 'gerko', '2005', 'and', 'the', 'characteristics', 'of', 'the', 'equity', 'curve', 'generated', 'by', 'a', 'trading', 'strategy', 'based', 'on', 'the', 'neural', 'net', 'predictions', 'se', 'introduce', 'aqui', 'un', 'modelo', 'no', 'parametrico', 'para', 'pronosticar', 'los', 'precios', 'del', 'petroleo', 'venezolano', 'cuyos', 'insumos', 'son', 'seleccionados', 'en', 'base', 'a', 'un', 'sistema', 'dinamico', 'que', 'explica', 'los', 'precios', 'en', 'terminos', 'de', 'dichos', 'insumos', 'se', 'describe', 'el', 'proceso', 'de', 'recoleccion', 'y', 'preprocesamiento', 'de', 'datos', 'y', 'la', 'corrida', 'de', 'la', 'red', 'y', 'se', 'evaluan', 'sus', 'pronosticos', 'a', 'traves', 'de', 'un', 'test', 'estadistico', 'de', 'predictibilidad', 'y', 'de', 'las', 'caracteristicas', 'del', 'equity', 'curve', 'inducido', 'por', 'la', 'estrategia', 'de', 'compraventa', 'bursatil', 'generada', 'por', 'dichos', 'pronosticos']] | [-0.15638071309402585, -0.004341679690405727, -0.1630724278613925, 0.11943493680842221, -0.05664996106550097, -0.17985372494161128, 0.010345898427069187, 0.2555638954639435, -0.13388698655366899, -0.29758350394666194, 0.03130027127487119, -0.33679354429990055, -0.16052882723137737, 0.11475275932997465, -0.2252377996817231, -0.05210738297482021, -0.06747792185097932, -0.06951528308354318, 0.05881128980219364, -0.33479605365172027, 0.201558239903301, 0.17739354360010476, 0.4129546605700161, -0.10851352141797542, 0.2283914131447673, 0.13703335092775523, 0.025725446432828904, -0.07125548565387727, -0.1716719547442626, 0.08660937806591391, 0.3502881999220699, 0.197898638702929, 0.21991431822255253, -0.34356657514721156, -0.11105428152158857, 0.08095758537761867, 0.009929283080622554, -0.020874737851321698, 0.009566435921005905, -0.3685242043659091, 0.037199253857135774, -0.22833176537090913, -0.021943718938156963, 0.0154673360735178, -0.0627929563857615, 0.05497519963234663, -0.25160478811711073, 0.03451130699086934, 0.021061287231743334, 0.1198542191311717, -0.0188408207311295, -0.21681610681395977, -0.22843638532911428, 0.032334219714161005, -0.0444465906675905, 0.0648129895562306, 0.06749127930775285, 0.0015838060975074768, -0.1398121803542599, 0.23937187299132348, -0.2323647860940546, -0.08344308429956436, 0.11064814697019756, -0.057218831680715086, -0.17207519731111826, 0.10327514640754089, 0.1351643846463412, 0.10769458485767246, -0.038168260237202045, 0.24841417941311375, 0.043637197975069285, 0.12900743710622192, 0.19264980538375676, -0.11643368128407747, 0.18775454385764898, 0.08222541994974017, 0.023167363298125566, -0.14123499424476177, -0.11776584176160396, -0.07455278784781695, -0.16222792598418892, -0.30224280938878656, -0.03464889401756227, -0.003069196850061417, -0.08165684239531401, -0.17632750034332276, 0.21957449539005755, 0.034575734481215474, 0.13119143810868264, 0.06267749978601933, 0.17489150815457105, -0.0435630096308887, -0.11072681652128813, 0.11286885032057763, 0.14912504933401943, 0.00437018322199583, 0.2575013947598636, -0.2331405273973942, 0.08379252279549837, 0.18148631767183543] |
708.383 | Entanglement and the nonlinear elastic behavior of forests of coiled
carbon nanotubes | Helical or coiled nanostructures have been object of intense experimental and
theoretical studies due to their special electronic and mechanical properties.
Recently, it was experimentally reported that the dynamical response of
foamlike forest of coiled carbon nanotubes under mechanical impact exhibits a
nonlinear, non-Hertzian behavior, with no trace of plastic deformation. The
physical origin of this unusual behavior is not yet fully understood. In this
work, based on analytical models, we show that the entanglement among
neighboring coils in the superior part of the forest surface must be taken into
account for a full description of the strongly nonlinear behavior of the impact
response of a drop-ball onto a forest of coiled carbon nanotubes.
| cond-mat.mtrl-sci | helical or coiled nanostructures have been object of intense experimental and theoretical studies due to their special electronic and mechanical properties recently it was experimentally reported that the dynamical response of foamlike forest of coiled carbon nanotubes under mechanical impact exhibits a nonlinear nonhertzian behavior with no trace of plastic deformation the physical origin of this unusual behavior is not yet fully understood in this work based on analytical models we show that the entanglement among neighboring coils in the superior part of the forest surface must be taken into account for a full description of the strongly nonlinear behavior of the impact response of a dropball onto a forest of coiled carbon nanotubes | [['helical', 'or', 'coiled', 'nanostructures', 'have', 'been', 'object', 'of', 'intense', 'experimental', 'and', 'theoretical', 'studies', 'due', 'to', 'their', 'special', 'electronic', 'and', 'mechanical', 'properties', 'recently', 'it', 'was', 'experimentally', 'reported', 'that', 'the', 'dynamical', 'response', 'of', 'foamlike', 'forest', 'of', 'coiled', 'carbon', 'nanotubes', 'under', 'mechanical', 'impact', 'exhibits', 'a', 'nonlinear', 'nonhertzian', 'behavior', 'with', 'no', 'trace', 'of', 'plastic', 'deformation', 'the', 'physical', 'origin', 'of', 'this', 'unusual', 'behavior', 'is', 'not', 'yet', 'fully', 'understood', 'in', 'this', 'work', 'based', 'on', 'analytical', 'models', 'we', 'show', 'that', 'the', 'entanglement', 'among', 'neighboring', 'coils', 'in', 'the', 'superior', 'part', 'of', 'the', 'forest', 'surface', 'must', 'be', 'taken', 'into', 'account', 'for', 'a', 'full', 'description', 'of', 'the', 'strongly', 'nonlinear', 'behavior', 'of', 'the', 'impact', 'response', 'of', 'a', 'dropball', 'onto', 'a', 'forest', 'of', 'coiled', 'carbon', 'nanotubes']] | [-0.11675341364688578, 0.1342194947142121, -0.09920186256841484, -0.011285116597268302, -0.056866179653072516, -0.11835079119371794, 0.02846961383567711, 0.4393075081495057, -0.21752274706465216, -0.24314517615027148, 0.06204080914839509, -0.2780567587134882, -0.2004294819590034, 0.1821939917708813, -0.012964052964100796, 0.06301716263447188, 0.05476142860850138, -0.013624246800895285, -0.02072346891251813, -0.1882921405903072, 0.23876830652372633, 0.09344186958757979, 0.33618465110049706, 0.06832584298362099, 0.08586984130232471, -0.024819477725015804, 0.03791062391272425, 0.10150443131219497, -0.12136209557161036, 0.10204876833224455, 0.21114447225129002, 0.009427137872764627, 0.2437274789693147, -0.49732546947599776, -0.26476063521628357, 0.08252604963439228, 0.12045498250827061, 0.11522109430711881, -0.04889528290111061, -0.24109174771053074, 0.06843842931948932, -0.14690769247945595, -0.12647079258530805, -0.05718074482247497, 0.04612656679845094, 0.036459207685202756, -0.17955554798101198, 0.05770134158531385, 0.09021068010268016, 0.08684733457063877, -0.08195525751473894, -0.08374299050877447, -0.06610309511456078, 0.11400754836107711, 0.03754029298341314, -0.03851464806553141, 0.190754282558172, -0.1438671592530275, -0.06747381265308147, 0.40740879989369255, -0.039639595264478265, -0.14168688244458322, 0.19428155612637313, -0.1578001542288843, -0.12734150116752208, 0.18737648651354114, 0.16113030515851728, 0.07071708151823387, -0.17853650708674593, 0.027633157906954926, -0.04290810233163359, 0.1441602166247579, 0.03483861524496326, 0.06382422066660416, 0.26473580501907695, 0.22842899324636148, -0.03182665678732761, 0.18127471037864257, -0.057803355868229954, -0.04544612845257584, -0.21950708304128025, -0.1461979723823941, -0.1810592871521954, 0.09192881417016198, -0.030659012545664607, -0.230771314542312, 0.4251931294864785, 0.10598356096255304, 0.19785965282873835, -0.009961562626789102, 0.2679220927566026, 0.06677054118909008, 0.09059498306421514, -0.016549286861137477, 0.3248033809549777, 0.16250867934782157, 0.06669900638455178, -0.26322497798756295, 0.11996536487734061, 0.009110454783107328] |
708.3831 | Twisted Alexander Polynomials and Representation Shifts | For any knot, the following are equivalent. (1) The infinite cyclic cover has
uncountably many finite covers; (2) there exists a finite-image representation
of the knot group for which the twisted Alexander polynomial vanishes; (3) the
knot group admits a finite-image representation such that the image of the
fundamental group of an incompressible Seifert surface is a proper subgroup of
the image of the commutator subgroup of the knot group.
| math.GT | for any knot the following are equivalent 1 the infinite cyclic cover has uncountably many finite covers 2 there exists a finiteimage representation of the knot group for which the twisted alexander polynomial vanishes 3 the knot group admits a finiteimage representation such that the image of the fundamental group of an incompressible seifert surface is a proper subgroup of the image of the commutator subgroup of the knot group | [['for', 'any', 'knot', 'the', 'following', 'are', 'equivalent', '1', 'the', 'infinite', 'cyclic', 'cover', 'has', 'uncountably', 'many', 'finite', 'covers', '2', 'there', 'exists', 'a', 'finiteimage', 'representation', 'of', 'the', 'knot', 'group', 'for', 'which', 'the', 'twisted', 'alexander', 'polynomial', 'vanishes', '3', 'the', 'knot', 'group', 'admits', 'a', 'finiteimage', 'representation', 'such', 'that', 'the', 'image', 'of', 'the', 'fundamental', 'group', 'of', 'an', 'incompressible', 'seifert', 'surface', 'is', 'a', 'proper', 'subgroup', 'of', 'the', 'image', 'of', 'the', 'commutator', 'subgroup', 'of', 'the', 'knot', 'group']] | [-0.27713182579193796, 0.10588366581713282, -0.1724780055295144, 0.034356419530896735, -0.11436578483719911, -0.1557491949958993, -0.01488106498228652, 0.3644978546670505, -0.341561927087605, -0.22841203710330385, 0.1382094452423709, -0.23231660606605667, -0.11442048765186752, 0.1751803626306355, -0.1473175508968, -0.022950905335268803, 0.05569216730073094, 0.17149622017251595, -0.09199531338776329, -0.21970408894121646, 0.37080719671877366, -0.11984009109437466, 0.18063744624544467, 0.0314568279444107, 0.17473890762110905, -0.010442902826304947, -0.05202705864129322, -0.027033776663509864, -0.14335030036963872, 0.06843727152528507, 0.2853058201926095, 0.052258371827857836, 0.1796061113343707, -0.33202393827835164, -0.17694294798587049, 0.21696866497929607, 0.16621604946974133, -0.040524090409079304, -0.06373889185488224, -0.2265069699380547, 0.10112630724906921, -0.20278805696538516, -0.14609047988695759, 0.010780832623796803, 0.12259281102035727, -0.015503876629684653, -0.15339279947802426, -0.005235343359942947, 0.09030715988150664, 0.1401762496413929, -0.0012096600540514504, -0.10306595341701592, -0.029789625839995486, 0.19404223977055932, -0.0029363737740953056, 0.13619341897761583, 0.08044207391462156, -0.18165595935923712, -0.11874376745295843, 0.4466026738818203, -0.07538325036210673, -0.21729434675404002, 0.12995749988726207, -0.1524526020645031, -0.23121876024108912, 0.2600901020424707, -0.0128076190162184, 0.07345630917698145, 0.02656533664890698, 0.1866185980083953, -0.2642930208306227, 0.1360177659629179, 0.06723595139836626, -0.08183714745433203, 0.11024094576548253, 0.0893301443063787, 0.12189480531877572, 0.12198716229093927, -0.025145829868103778, 0.05452644133142063, -0.3676811565511993, -0.2789403470499175, -0.14880638527018683, 0.08992921546367662, -0.17215541351054395, -0.210897348029539, 0.4532124041978802, 0.0002418430821437921, 0.06950951431478773, 0.10264559259937545, 0.19284217151912994, 0.049521977361291644, 0.07877735980520291, 0.13038430331674006, 0.08502333662472665, 0.20175572411556328, -0.14174009628061737, -0.15886291803659072, -0.050988295687628644, 0.22591735442235533] |
708.3832 | An H2CO 6cm Maser Pinpointing a Possible Circumstellar Torus in
IRAS18566+0408 | We report observations of 6cm, 3.6cm, 1.3cm, and 7mm radio continuum,
conducted with the Very Large Array towards IRAS18566+0408, one of the few
sources known to harbor H2CO 6cm maser emission. Our observations reveal that
the emission is dominated by an ionized jet at cm wavelengths. Spitzer/IRAC
images from GLIMPSE support this interpretation, given the presence of 4.5um
excess emission at approximately the same orientation as the cm continuum. The
7mm emission is dominated by thermal dust from a flattened structure almost
perpendicular to the ionized jet, thus, the 7mm emission appears to trace a
torus associated with a young massive stellar object. The H2CO 6cm maser is
coincident with the center of the torus-like structure. Our observations rule
out radiative pumping via radio continuum as the excitation mechanism for the
H2CO 6cm maser in IRAS18566+0408.
| astro-ph | we report observations of 6cm 36cm 13cm and 7mm radio continuum conducted with the very large array towards iras185660408 one of the few sources known to harbor h2co 6cm maser emission our observations reveal that the emission is dominated by an ionized jet at cm wavelengths spitzerirac images from glimpse support this interpretation given the presence of 45um excess emission at approximately the same orientation as the cm continuum the 7mm emission is dominated by thermal dust from a flattened structure almost perpendicular to the ionized jet thus the 7mm emission appears to trace a torus associated with a young massive stellar object the h2co 6cm maser is coincident with the center of the toruslike structure our observations rule out radiative pumping via radio continuum as the excitation mechanism for the h2co 6cm maser in iras185660408 | [['we', 'report', 'observations', 'of', '6cm', '36cm', '13cm', 'and', '7mm', 'radio', 'continuum', 'conducted', 'with', 'the', 'very', 'large', 'array', 'towards', 'iras185660408', 'one', 'of', 'the', 'few', 'sources', 'known', 'to', 'harbor', 'h2co', '6cm', 'maser', 'emission', 'our', 'observations', 'reveal', 'that', 'the', 'emission', 'is', 'dominated', 'by', 'an', 'ionized', 'jet', 'at', 'cm', 'wavelengths', 'spitzerirac', 'images', 'from', 'glimpse', 'support', 'this', 'interpretation', 'given', 'the', 'presence', 'of', '45um', 'excess', 'emission', 'at', 'approximately', 'the', 'same', 'orientation', 'as', 'the', 'cm', 'continuum', 'the', '7mm', 'emission', 'is', 'dominated', 'by', 'thermal', 'dust', 'from', 'a', 'flattened', 'structure', 'almost', 'perpendicular', 'to', 'the', 'ionized', 'jet', 'thus', 'the', '7mm', 'emission', 'appears', 'to', 'trace', 'a', 'torus', 'associated', 'with', 'a', 'young', 'massive', 'stellar', 'object', 'the', 'h2co', '6cm', 'maser', 'is', 'coincident', 'with', 'the', 'center', 'of', 'the', 'toruslike', 'structure', 'our', 'observations', 'rule', 'out', 'radiative', 'pumping', 'via', 'radio', 'continuum', 'as', 'the', 'excitation', 'mechanism', 'for', 'the', 'h2co', '6cm', 'maser', 'in', 'iras185660408']] | [-0.05176334885875215, 0.05652298184160078, -0.00959074223989292, 0.034249158835497354, -0.10243907952270306, -0.09331496655324693, 0.01573290430721553, 0.5230646982022068, -0.1545070909675868, -0.2650548115454833, 0.08282264559581082, -0.26979823653956, 0.020341668661464665, 0.13039857446325614, 0.06437880213090519, -0.09407997264412081, 0.046615567556513915, -0.19469750250915668, 0.037971691997132864, -0.10762813957235802, 0.2583466460859841, 0.18525488963624573, 0.17815048405250042, 0.02587593937128344, 0.08031182812170728, -0.19694140612366884, -0.11983967365642242, -0.0642203957951792, -0.05528351906816491, 0.07686756714247167, 0.27880754038222433, 0.07405997389886419, 0.11832599893472541, -0.34222179103765965, -0.23346092194483123, 0.009607483928180848, 0.15130910861497635, 0.04953755402033601, 0.022474377231179354, -0.3305883113823845, 0.004284688627676052, -0.14309861224939915, -0.24022507758619374, 0.13959461359188616, 0.04924751397629734, -0.0016526336617329542, -0.20551064702843125, 0.1120328657424954, -0.009883336090270485, 0.13303777830065777, -0.14337233890888884, -0.13824361170683166, -0.0948336109328974, 0.05512502310996163, -0.01952083689855713, 0.1372926751997404, 0.2155580860802301, -0.1282452185456778, -0.10879485773758087, 0.38486110164290843, -0.12413088896530955, 0.042654226664179826, 0.250220079534783, -0.2802544982816257, -0.2604420190233641, 0.3515046171292745, 0.08718888217802434, 0.11176216817522586, -0.0991367040808066, -0.06443968229209798, -0.09849776620702709, 0.24583314492552102, 0.09161271803382345, 0.1063114472267711, 0.3833207599407829, 0.06571505865191712, 0.05324676990002284, 0.22340509499532774, -0.3489890032630201, -0.037788049812661484, -0.27762985674138796, -0.05015958684688324, -0.15267059161423652, 0.16258431055500885, -0.11199773681640662, -0.09526280556447626, 0.300482930325362, 0.0648576442789122, 0.19063468274030396, 0.053588297356541525, 0.345246257055003, 0.04257660251631237, 0.13229997894343207, 0.1668372917064356, 0.3041788225664812, 0.19488930616267575, 0.1444343343267546, -0.2460573528523502, 0.039698976787108486, -0.03281379787265049] |
708.3833 | The Symbiotic System SS73 17 Seen with Suzaku | We observed with Suzaku the symbiotic star SS73 17, motivated by the
discovery by the INTEGRAL satellite and the Swift BAT survey that it emits hard
X-rays. Our observations showed a highly-absorbed X-ray spectrum with NH >
10^23 cm-2, equivalent to A_V > 26, although the source has B magnitude 11.3
and is also bright in UV. The source also shows strong, narrow iron lines
including fluorescent Fe K as well as Fe xxv and Fe xxvi. The X-ray spectrum
can be fit with a thermal model including an absorption component that
partially covers the source. Most of the equivalent width of the iron
fluorescent line in this model can be explained as a combination of
reprocessing in a dense absorber plus reflection off a white dwarf surface, but
it is likely that the continuum is partially seen in reflection as well. Unlike
other symbiotic systems that show hard X-ray emission (CH Cyg, RT Cru, T CrB,
GX1+4), SS73 17 is not known to have shown nova-like optical variability, X-ray
flashes, or pulsations, and has always shown faint soft X-ray emission. As a
result, although it is likely a white dwarf, the nature of the compact object
in SS73 17 is still uncertain. SS73 17 is probably an extreme example of the
recently discovered and relatively small class of hard X-ray emitting symbiotic
systems.
| astro-ph | we observed with suzaku the symbiotic star ss73 17 motivated by the discovery by the integral satellite and the swift bat survey that it emits hard xrays our observations showed a highlyabsorbed xray spectrum with nh 1023 cm2 equivalent to a_v 26 although the source has b magnitude 113 and is also bright in uv the source also shows strong narrow iron lines including fluorescent fe k as well as fe xxv and fe xxvi the xray spectrum can be fit with a thermal model including an absorption component that partially covers the source most of the equivalent width of the iron fluorescent line in this model can be explained as a combination of reprocessing in a dense absorber plus reflection off a white dwarf surface but it is likely that the continuum is partially seen in reflection as well unlike other symbiotic systems that show hard xray emission ch cyg rt cru t crb gx14 ss73 17 is not known to have shown novalike optical variability xray flashes or pulsations and has always shown faint soft xray emission as a result although it is likely a white dwarf the nature of the compact object in ss73 17 is still uncertain ss73 17 is probably an extreme example of the recently discovered and relatively small class of hard xray emitting symbiotic systems | [['we', 'observed', 'with', 'suzaku', 'the', 'symbiotic', 'star', 'ss73', '17', 'motivated', 'by', 'the', 'discovery', 'by', 'the', 'integral', 'satellite', 'and', 'the', 'swift', 'bat', 'survey', 'that', 'it', 'emits', 'hard', 'xrays', 'our', 'observations', 'showed', 'a', 'highlyabsorbed', 'xray', 'spectrum', 'with', 'nh', '1023', 'cm2', 'equivalent', 'to', 'a_v', '26', 'although', 'the', 'source', 'has', 'b', 'magnitude', '113', 'and', 'is', 'also', 'bright', 'in', 'uv', 'the', 'source', 'also', 'shows', 'strong', 'narrow', 'iron', 'lines', 'including', 'fluorescent', 'fe', 'k', 'as', 'well', 'as', 'fe', 'xxv', 'and', 'fe', 'xxvi', 'the', 'xray', 'spectrum', 'can', 'be', 'fit', 'with', 'a', 'thermal', 'model', 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708.3834 | A simple evolutionary game with feedback between perception and reality | We study an evolutionary game of chance in which the probabilities for
different outcomes (e.g., heads or tails) depend on the amount wagered on those
outcomes. The game is perhaps the simplest possible probabilistic game in which
perception affects reality. By varying the `reality map', which relates the
amount wagered to the probability of the outcome, it is possible to move
continuously from a purely objective game in which probabilities have no
dependence on wagers, to a purely subjective game in which probabilities equal
the amount wagered. The reality map can reflect self-reinforcing strategies or
self-defeating strategies. In self-reinforcing games, rational players can
achieve increasing returns and manipulate the outcome probabilities to their
advantage; consequently, an early lead in the game, whether acquired by chance
or by strategy, typically gives a persistent advantage. We investigate the game
both in and out of equilibrium and with and without rational players. We
introduce a method of measuring the inefficiency of the game and show that in
the large time limit the inefficiency decreases slowly in its approach to
equilibrium as a power law with an exponent between zero and one, depending on
the subjectivity of the game.
| physics.soc-ph | we study an evolutionary game of chance in which the probabilities for different outcomes eg heads or tails depend on the amount wagered on those outcomes the game is perhaps the simplest possible probabilistic game in which perception affects reality by varying the reality map which relates the amount wagered to the probability of the outcome it is possible to move continuously from a purely objective game in which probabilities have no dependence on wagers to a purely subjective game in which probabilities equal the amount wagered the reality map can reflect selfreinforcing strategies or selfdefeating strategies in selfreinforcing games rational players can achieve increasing returns and manipulate the outcome probabilities to their advantage consequently an early lead in the game whether acquired by chance or by strategy typically gives a persistent advantage we investigate the game both in and out of equilibrium and with and without rational players we introduce a method of measuring the inefficiency of the game and show that in the large time limit the inefficiency decreases slowly in its approach to equilibrium as a power law with an exponent between zero and one depending on the subjectivity of the game | [['we', 'study', 'an', 'evolutionary', 'game', 'of', 'chance', 'in', 'which', 'the', 'probabilities', 'for', 'different', 'outcomes', 'eg', 'heads', 'or', 'tails', 'depend', 'on', 'the', 'amount', 'wagered', 'on', 'those', 'outcomes', 'the', 'game', 'is', 'perhaps', 'the', 'simplest', 'possible', 'probabilistic', 'game', 'in', 'which', 'perception', 'affects', 'reality', 'by', 'varying', 'the', 'reality', 'map', 'which', 'relates', 'the', 'amount', 'wagered', 'to', 'the', 'probability', 'of', 'the', 'outcome', 'it', 'is', 'possible', 'to', 'move', 'continuously', 'from', 'a', 'purely', 'objective', 'game', 'in', 'which', 'probabilities', 'have', 'no', 'dependence', 'on', 'wagers', 'to', 'a', 'purely', 'subjective', 'game', 'in', 'which', 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708.3835 | A 5D non compact and non Ricci flat Kaluza-Klein Cosmology | A model universe is proposed in the framework of 5-dimensional noncompact
Kaluza-Klein cosmology which is not Ricci flat. The 4D part as the
Robertson-Walker metric is coupled to conventional perfect fluid, and its
extra-dimensional part is coupled to a dark pressure through a scalar field. It
is shown that neither early inflation nor current acceleration of the 4D
universe would happen if the non-vacuum states of the scalar field would
contribute to 4D cosmology.
| gr-qc | a model universe is proposed in the framework of 5dimensional noncompact kaluzaklein cosmology which is not ricci flat the 4d part as the robertsonwalker metric is coupled to conventional perfect fluid and its extradimensional part is coupled to a dark pressure through a scalar field it is shown that neither early inflation nor current acceleration of the 4d universe would happen if the nonvacuum states of the scalar field would contribute to 4d cosmology | [['a', 'model', 'universe', 'is', 'proposed', 'in', 'the', 'framework', 'of', '5dimensional', 'noncompact', 'kaluzaklein', 'cosmology', 'which', 'is', 'not', 'ricci', 'flat', 'the', '4d', 'part', 'as', 'the', 'robertsonwalker', 'metric', 'is', 'coupled', 'to', 'conventional', 'perfect', 'fluid', 'and', 'its', 'extradimensional', 'part', 'is', 'coupled', 'to', 'a', 'dark', 'pressure', 'through', 'a', 'scalar', 'field', 'it', 'is', 'shown', 'that', 'neither', 'early', 'inflation', 'nor', 'current', 'acceleration', 'of', 'the', '4d', 'universe', 'would', 'happen', 'if', 'the', 'nonvacuum', 'states', 'of', 'the', 'scalar', 'field', 'would', 'contribute', 'to', '4d', 'cosmology']] | [-0.14812321521536875, 0.18455150747055038, -0.12020409569093907, 0.11680005732577646, -0.17358525094853058, -0.18861163666824232, -0.14602188506742586, 0.28747693768928984, -0.16928549161231196, -0.24989380463926322, 0.0679516706008439, -0.23828695163231445, -0.10892167670111097, 0.08489955349737224, -0.054498321741718696, -0.04710341914560067, -0.009363663433169996, 0.10748767642606352, 0.0029794210096116404, -0.30149125369467045, 0.38048027192771033, 0.10862026564348992, 0.27933207032509855, 0.03232700756839099, 0.10865552961272565, -0.09901942275590389, 0.025027293697742092, 0.046843575326272764, -0.10489863260836746, 0.030554619727096194, 0.19602194957032398, 0.14105992527628267, 0.2018221864206213, -0.4049584719830671, -0.2876544683240354, 0.17667732595440908, 0.17975207389256842, 0.16182789103776166, -0.05824463058112038, -0.28814961461702715, 0.045148100349989194, -0.15623677299181754, -0.14785464415625618, -0.03819279781718914, -0.03638017744870504, -0.1848265664475794, -0.24674523058599113, 0.12357795006922774, 0.002745972468039474, -0.0921159620031815, -0.10596595682059037, -0.00930783127409381, -0.07937873545027263, 0.006908635766169912, 0.1305129815198204, 0.09423458960372955, 0.16954639113533335, -0.16129609630946573, -0.07368891606598187, 0.4297088521809594, -0.1780017276036528, -0.21670402697211988, 0.1450447387288551, -0.14564914823937658, -0.057542125102938026, 0.10373069029427259, 0.10248024389147758, 0.13334601339758248, -0.12178186140010587, 0.23889957450100574, 0.02418077884342622, 0.15779114577831146, 0.04124762207219327, -0.016021807986387127, 0.343159141799284, 0.133412559604826, 0.042155070601635286, 0.0652731045187023, 0.01078226781022307, -0.14008371359542818, -0.4092884146281191, -0.2037001877544901, -0.1788486619102391, 0.12973911701182433, -0.1396522411533452, -0.2339713697056632, 0.36171343801794825, 0.07208656987987107, 0.0999879087573169, -0.002389245941870015, 0.2769828837717304, 0.008748620671434077, 0.05746772898537283, 0.10951249420680609, 0.3559193939750863, 0.17939580447430648, 0.16172490362707223, -0.20333063175171814, -0.10772607128790303, 0.0679730211032202] |
708.3836 | Inelastic scattering rates in d-wave superconductors | The inelastic scattering rates of quasiparticles in a two-dimensional d-wave
superconductor, which arise from interactions with either acoustic phonons or
other quasiparticles, are calculated within second order perturbation theory.
We discover a strong enhancement of scattering with collinear momenta, brouth
about by the special kinematics of the two-dimensional fermions with Dirac-like
spectrum near the nodes of the d-wave order parameter. In the case of a local
instantaneous interparticle potential we find that either an RPA-type
resummation of the perturbation series or an inclusion of non-linear
corrections to the Dirac spectrum is called for in order to obtain a finite
scattering rate in the limit $\omega/T\to 0$. In either way, we find drastic
changes in the scattering rate, as compared to the naively expected cubic
temperature dependence.
| cond-mat.str-el cond-mat.supr-con | the inelastic scattering rates of quasiparticles in a twodimensional dwave superconductor which arise from interactions with either acoustic phonons or other quasiparticles are calculated within second order perturbation theory we discover a strong enhancement of scattering with collinear momenta brouth about by the special kinematics of the twodimensional fermions with diraclike spectrum near the nodes of the dwave order parameter in the case of a local instantaneous interparticle potential we find that either an rpatype resummation of the perturbation series or an inclusion of nonlinear corrections to the dirac spectrum is called for in order to obtain a finite scattering rate in the limit omegatto 0 in either way we find drastic changes in the scattering rate as compared to the naively expected cubic temperature dependence | [['the', 'inelastic', 'scattering', 'rates', 'of', 'quasiparticles', 'in', 'a', 'twodimensional', 'dwave', 'superconductor', 'which', 'arise', 'from', 'interactions', 'with', 'either', 'acoustic', 'phonons', 'or', 'other', 'quasiparticles', 'are', 'calculated', 'within', 'second', 'order', 'perturbation', 'theory', 'we', 'discover', 'a', 'strong', 'enhancement', 'of', 'scattering', 'with', 'collinear', 'momenta', 'brouth', 'about', 'by', 'the', 'special', 'kinematics', 'of', 'the', 'twodimensional', 'fermions', 'with', 'diraclike', 'spectrum', 'near', 'the', 'nodes', 'of', 'the', 'dwave', 'order', 'parameter', 'in', 'the', 'case', 'of', 'a', 'local', 'instantaneous', 'interparticle', 'potential', 'we', 'find', 'that', 'either', 'an', 'rpatype', 'resummation', 'of', 'the', 'perturbation', 'series', 'or', 'an', 'inclusion', 'of', 'nonlinear', 'corrections', 'to', 'the', 'dirac', 'spectrum', 'is', 'called', 'for', 'in', 'order', 'to', 'obtain', 'a', 'finite', 'scattering', 'rate', 'in', 'the', 'limit', 'omegatto', '0', 'in', 'either', 'way', 'we', 'find', 'drastic', 'changes', 'in', 'the', 'scattering', 'rate', 'as', 'compared', 'to', 'the', 'naively', 'expected', 'cubic', 'temperature', 'dependence']] | [-0.17001136727706198, 0.17143149408647948, -0.07490516034369883, 0.06500342944843485, -0.05822821957765207, -0.08576289876814812, 0.05310595882098911, 0.32765106639764724, -0.2791638190993258, -0.24604414150282186, 0.008834019076124194, -0.37875501023823277, -0.09841181355859002, 0.1285363922060858, 0.06798353500761872, 0.04017362540828124, -0.024439621562769097, 0.06299570347032239, -0.11748095029672127, -0.20869952722850646, 0.3426804307269894, 0.03081172564998269, 0.24856605356739414, 0.0753497093720662, 0.006566777412268904, 0.06503402256602121, 0.05664806243716627, -0.00016838685335260966, -0.11328736300827351, 0.050756590091212625, 0.2511678334595936, -0.08609570378077126, 0.18066591478230792, -0.43727688383566393, -0.22147319767804396, 0.07449796638121048, 0.17596932006023464, 0.1553058463417279, -0.04313011201767011, -0.25838605198828923, 0.03077069386809824, -0.19340277228489397, -0.16723384730228705, -0.08844445066924597, -0.02118323297960864, -0.012032599977007317, -0.2856355217630945, 0.12370859091019919, 0.050298534311173905, 0.02696841163560748, -0.04717948762399535, -0.07293060517329122, -0.049641961164231745, 0.04243241663977143, 0.086426806454021, 0.03454680920713731, 0.09719584887892369, -0.18946262305384623, -0.11684390166473965, 0.40475780498086206, -0.12396526244194847, -0.14447578802261682, 0.16138436952080096, -0.19161860492350835, -0.056982004121246356, 0.18267952769923385, 0.17063945199122593, 0.10205005779073784, -0.14076845770731808, 0.0991135180567301, 0.003724526550110069, 0.17090341176710003, 0.06999283578179236, 0.07489646809089238, 0.1977008432149887, 0.13892518901059614, 0.04478697905377034, 0.09572748425313377, -0.11478684858452799, -0.06702108679136502, -0.3196737832810369, -0.09876770851570332, -0.17870789153183128, 0.06607089159012591, -0.08994022344854931, -0.1945202248771825, 0.34848279012892874, 0.12583928471459302, 0.24128715243873997, 0.006239731316342049, 0.2527688809279953, 0.20013768305427454, 0.09960109711204085, 0.06612255938835593, 0.27321703233681016, 0.11945355278928013, 0.050114314984379994, -0.28879508892503275, -0.006410467288186473, 0.0474525181005799] |
708.3837 | Possible Magnetic Activity in the Low Mass X-ray Binary EXO 0748-676 | We report evidence of magnetic activity associated with the secondary star in
the EXO 0748-676 low mass X-ray binary system. An analysis of a sequence of
five consecutive X-ray eclipses observed during December 2003 with the RXTE
satellite brings out a feature occurring during ingress we interpret as the
X-ray photoelectric absorption shadow, as seen by an observer at Earth, of a
plasma structure suspended above the surface of the secondary star. The light
curve feature consists of an initial drop in count rate to near zero (the
absorption shadow) with a very short rebound to a significant fraction of the
pre-ingress count rate and then a final plunge to totality over a total time
scale of ~25 s. The ingress feature persists for at least 5 consecutive orbital
periods (a total of ~19 hr), and possibly up to 5 days in our data. Our data
also show significant post-egress dipping during this eclipse sequence, unusual
for this source, indicating possible secondary star mass ejection during this
episode.
| astro-ph | we report evidence of magnetic activity associated with the secondary star in the exo 0748676 low mass xray binary system an analysis of a sequence of five consecutive xray eclipses observed during december 2003 with the rxte satellite brings out a feature occurring during ingress we interpret as the xray photoelectric absorption shadow as seen by an observer at earth of a plasma structure suspended above the surface of the secondary star the light curve feature consists of an initial drop in count rate to near zero the absorption shadow with a very short rebound to a significant fraction of the preingress count rate and then a final plunge to totality over a total time scale of 25 s the ingress feature persists for at least 5 consecutive orbital periods a total of 19 hr and possibly up to 5 days in our data our data also show significant postegress dipping during this eclipse sequence unusual for this source indicating possible secondary star mass ejection during this episode | [['we', 'report', 'evidence', 'of', 'magnetic', 'activity', 'associated', 'with', 'the', 'secondary', 'star', 'in', 'the', 'exo', '0748676', 'low', 'mass', 'xray', 'binary', 'system', 'an', 'analysis', 'of', 'a', 'sequence', 'of', 'five', 'consecutive', 'xray', 'eclipses', 'observed', 'during', 'december', '2003', 'with', 'the', 'rxte', 'satellite', 'brings', 'out', 'a', 'feature', 'occurring', 'during', 'ingress', 'we', 'interpret', 'as', 'the', 'xray', 'photoelectric', 'absorption', 'shadow', 'as', 'seen', 'by', 'an', 'observer', 'at', 'earth', 'of', 'a', 'plasma', 'structure', 'suspended', 'above', 'the', 'surface', 'of', 'the', 'secondary', 'star', 'the', 'light', 'curve', 'feature', 'consists', 'of', 'an', 'initial', 'drop', 'in', 'count', 'rate', 'to', 'near', 'zero', 'the', 'absorption', 'shadow', 'with', 'a', 'very', 'short', 'rebound', 'to', 'a', 'significant', 'fraction', 'of', 'the', 'preingress', 'count', 'rate', 'and', 'then', 'a', 'final', 'plunge', 'to', 'totality', 'over', 'a', 'total', 'time', 'scale', 'of', '25', 's', 'the', 'ingress', 'feature', 'persists', 'for', 'at', 'least', '5', 'consecutive', 'orbital', 'periods', 'a', 'total', 'of', '19', 'hr', 'and', 'possibly', 'up', 'to', '5', 'days', 'in', 'our', 'data', 'our', 'data', 'also', 'show', 'significant', 'postegress', 'dipping', 'during', 'this', 'eclipse', 'sequence', 'unusual', 'for', 'this', 'source', 'indicating', 'possible', 'secondary', 'star', 'mass', 'ejection', 'during', 'this', 'episode']] | [-0.12894855446956424, 0.1449025612970897, -0.08918473491422742, 0.04856892776498795, -0.04093160665543548, -0.07453104155418654, 0.10379775816782277, 0.40232114264803254, -0.24593368443065738, -0.3888682388274156, 0.10177039734932246, -0.32350199489033055, -0.07581028044897031, 0.21157539842779333, -0.08111898717189948, -0.003132499071365469, 0.13950374999352877, 0.04050621659781066, -0.08479140514363423, -0.2670242115174959, 0.24068472843830396, 0.10565501359622387, 0.14272421986672534, 0.00467351935130645, 0.09147944057736186, 0.011474506172115904, -0.05460805222897016, -0.08455509262114584, -0.07833042604656236, 0.016070771291964204, 0.22573414327666522, 0.11617437766230923, 0.20238458483160127, -0.3717502288924283, -0.21593435321855975, 0.04816668895942843, 0.1221328179537128, 0.012337666812790445, -0.04367762814130051, -0.21508326850823092, 0.04916013531240983, -0.2200672411547794, -0.14109826139987908, 0.08807211239501014, 0.12480503950458784, -0.017144274753406196, -0.2187007690803928, 0.10248693334992767, 0.06436762191405722, 0.08762772105555668, -0.14998380319742732, -0.047222624767812936, -0.07322185661598861, 0.08092221664264798, 0.09623509608433549, 0.0837288993349052, 0.12400824346590832, -0.07723676724252795, -0.07643713557627052, 0.32876369621357826, -0.10020614825245218, 0.068728931932654, 0.18570224550995887, -0.20663283583820316, -0.15468088954866652, 0.2761468810523041, 0.17953106350860143, 0.10221360514434166, -0.13179979292172322, -0.07843771789146514, -0.012643351661762312, 0.26246900748495144, 0.12745107755805535, 0.014909056204662895, 0.35834581256249404, 0.1700993998885065, 0.018991490769906933, 0.14183578190270318, -0.26959402977905506, -0.011287434334819013, -0.25996127611738684, -0.1077708936961233, -0.1052627354209502, 0.0804435677275185, -0.09891700337578525, -0.12743820586937468, 0.383453546431342, 0.05094841986888296, 0.2737599714681596, 0.005003808723364295, 0.27914473655527033, 0.09953588976578069, 0.053305277903844796, 0.08598321152806103, 0.27603615093303013, 0.08874352933580887, 0.15582949146544225, -0.25421597257940975, 0.08157742694188583, -0.003584649868264615] |
708.3838 | Spectroscopic follow-up of a cluster candidate at z = 1.45 | We have obtained deep optical spectroscopic data of the highest-redshift
cluster candidate (z ~ 1.4, CVB13) selected by Van Breukelen et al. (2006) in a
photometric optical/infrared catalogue of the Subaru XMM-Newton Deep Field. The
data, which comprise 104 targeted galaxies, were taken with the DEep Imaging
Multi-Object Spectrograph (DEIMOS) on the Keck 2 telescope and yielded 31
secure redshifts in the range 1.25 < z < 1.54 within a 7' x 4' field centred on
CVB13. Instead of one massive cluster at z = 1.4, we find evidence for three
projected structures at z = 1.40, z = 1.45, and z = 1.48. The most
statistically robust of these structures, at z = 1.454, has six
spectroscopically confirmed galaxies. Its total mass is estimated at > 10^14
M_sun and it may therefore be termed a cluster. There is an X-ray source at the
cluster position which is marginally spatially resolved but whose X-ray
spectrum is too hard to be thermal cluster emission. Its origin could be the
summed X-ray emission from active galaxies in, and projected onto, the cluster.
Serendipitously we have discovered a cluster at z = 1.28 with a mass of > 10^14
M_sun at the same position on the sky, comprising six spectroscopically
confirmed cluster galaxies and at least one additional radio source. The
selection of CVB13 for the cluster catalogue was evidently aided by the
superposition of other, presumably lower-mass, structures, whereas the single
cluster at z = 1.28 contained too few galaxies to be isolated by the same
algorithm. Given the complicated nature of such structures, caution must be
employed when measuring the mass function of putative high-redshift clusters
with photometric techniques alone.
| astro-ph | we have obtained deep optical spectroscopic data of the highestredshift cluster candidate z 14 cvb13 selected by van breukelen et al 2006 in a photometric opticalinfrared catalogue of the subaru xmmnewton deep field the data which comprise 104 targeted galaxies were taken with the deep imaging multiobject spectrograph deimos on the keck 2 telescope and yielded 31 secure redshifts in the range 125 z 154 within a 7 x 4 field centred on cvb13 instead of one massive cluster at z 14 we find evidence for three projected structures at z 140 z 145 and z 148 the most statistically robust of these structures at z 1454 has six spectroscopically confirmed galaxies its total mass is estimated at 1014 m_sun and it may therefore be termed a cluster there is an xray source at the cluster position which is marginally spatially resolved but whose xray spectrum is too hard to be thermal cluster emission its origin could be the summed xray emission from active galaxies in and projected onto the cluster serendipitously we have discovered a cluster at z 128 with a mass of 1014 m_sun at the same position on the sky comprising six spectroscopically confirmed cluster galaxies and at least one additional radio source the selection of cvb13 for the cluster catalogue was evidently aided by the superposition of other presumably lowermass structures whereas the single cluster at z 128 contained too few galaxies to be isolated by the same algorithm given the complicated nature of such structures caution must be employed when measuring the mass function of putative highredshift clusters with photometric techniques alone | [['we', 'have', 'obtained', 'deep', 'optical', 'spectroscopic', 'data', 'of', 'the', 'highestredshift', 'cluster', 'candidate', 'z', '14', 'cvb13', 'selected', 'by', 'van', 'breukelen', 'et', 'al', '2006', 'in', 'a', 'photometric', 'opticalinfrared', 'catalogue', 'of', 'the', 'subaru', 'xmmnewton', 'deep', 'field', 'the', 'data', 'which', 'comprise', '104', 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708.3839 | Derived classification of gentle algebras with two cycles | We classify gentle algebras defined by quivers with two cycles under derived
equivalence in a non degenerate case, by using some combinatorial invariants
constructed from the quiver with relations defining these algebras. We also
present a list of normal forms; any such algebra is derived equivalent to one
of the algebras in the list.
| math.RT | we classify gentle algebras defined by quivers with two cycles under derived equivalence in a non degenerate case by using some combinatorial invariants constructed from the quiver with relations defining these algebras we also present a list of normal forms any such algebra is derived equivalent to one of the algebras in the list | [['we', 'classify', 'gentle', 'algebras', 'defined', 'by', 'quivers', 'with', 'two', 'cycles', 'under', 'derived', 'equivalence', 'in', 'a', 'non', 'degenerate', 'case', 'by', 'using', 'some', 'combinatorial', 'invariants', 'constructed', 'from', 'the', 'quiver', 'with', 'relations', 'defining', 'these', 'algebras', 'we', 'also', 'present', 'a', 'list', 'of', 'normal', 'forms', 'any', 'such', 'algebra', 'is', 'derived', 'equivalent', 'to', 'one', 'of', 'the', 'algebras', 'in', 'the', 'list']] | [-0.1581066599012249, 0.07608774017663328, -0.04237604677608168, 0.09550126601674559, -0.08614433187715433, -0.1864659198111406, -0.008391378175777694, 0.3481223205863326, -0.3767611925593681, -0.25586163801899936, 0.1328229587395779, -0.21519217667756257, -0.17331768006638246, 0.19138162721086432, -0.14853217741646976, -0.07980842346808424, 0.06699118150087695, 0.09191865720613687, -0.1585919919133529, -0.29145763000404395, 0.47484752425441035, -0.05384533434860512, 0.18373040102974134, -0.05581906350454557, 0.10252144932746887, 0.04676454692768554, -0.05942996685324168, 0.07106538851641947, -0.20024522322368016, 0.1274973280313942, 0.2978206155261163, 0.10476906916678504, 0.13970912181496345, -0.3649732639875125, -0.08007134326962168, 0.17208300689580264, 0.1268661934365001, 0.08440094955127549, -0.0446748135663155, -0.24984107072965275, 0.06746013092601465, -0.21356649003509018, -0.13788548139510332, -0.04304211753144584, 0.06191156673486586, 0.028424558350471436, -0.20639313684983385, -0.022201978632236004, 0.05720696011040774, 0.16687965247762837, -0.1232361527401264, -0.10679463500639906, -0.099894010755061, 0.09379641446974818, -0.08012907084129336, -0.038634678797313464, 0.06393286447133438, -0.09867173768752427, -0.2021997573233589, 0.35537946679525906, -0.02339179813861847, -0.2320624920712025, 0.16233441365572313, -0.11095747465474738, -0.2119312548958179, 0.11661276928390618, 0.001802746103041702, 0.11637507996487396, -0.12553753529640813, 0.10283379042003718, -0.11278930597904104, -0.03830488409019179, 0.10893924261822745, -0.00431278235865412, 0.18814593361242227, 0.07019248214998731, -0.0036963351691762605, 0.20950469302220476, 0.08024073699144302, -0.02106880448344681, -0.3742184130543912, -0.11741492640296067, -0.04262556511632822, 0.11845253742541428, -0.09428570457492713, -0.1772880561184138, 0.402520391193253, 0.1004180475310595, 0.1932227007906746, 0.13955908179007195, 0.17498482322251355, 0.11819737550750789, 0.16265128731417158, 0.057713604560208125, 0.15629688046141788, 0.27640040662933, -0.03811366422343309, -0.09433187203399872, -0.038279876492365646, 0.23077320386828096] |
708.384 | Formal analytical solutions for the Gross-Pitaevskii equation | Considering the Gross-Pitaevskii integral equation we are able to formally
obtain an analytical solution for the order parameter $\Phi (x)$ and for the
chemical potential $\mu $ as a function of a unique dimensionless non-linear
parameter $\Lambda $. We report solutions for different range of values for the
repulsive and the attractive non-linear interactions in the condensate. Also,
we study a bright soliton-like variational solution for the order parameter for
positive and negative values of $\Lambda $. Introducing an accumulated error
function we have performed a quantitative analysis with other well-established
methods as: the perturbation theory, the Thomas-Fermi approximation, and the
numerical solution. This study gives a very useful result establishing the
universal range of the $\Lambda $-values where each solution can be easily
implemented. In particular we showed that for $\Lambda <-9$, the bright soliton
function reproduces the exact solution of GPE wave function.
| cond-mat.other | considering the grosspitaevskii integral equation we are able to formally obtain an analytical solution for the order parameter phi x and for the chemical potential mu as a function of a unique dimensionless nonlinear parameter lambda we report solutions for different range of values for the repulsive and the attractive nonlinear interactions in the condensate also we study a bright solitonlike variational solution for the order parameter for positive and negative values of lambda introducing an accumulated error function we have performed a quantitative analysis with other wellestablished methods as the perturbation theory the thomasfermi approximation and the numerical solution this study gives a very useful result establishing the universal range of the lambda values where each solution can be easily implemented in particular we showed that for lambda 9 the bright soliton function reproduces the exact solution of gpe wave function | [['considering', 'the', 'grosspitaevskii', 'integral', 'equation', 'we', 'are', 'able', 'to', 'formally', 'obtain', 'an', 'analytical', 'solution', 'for', 'the', 'order', 'parameter', 'phi', 'x', 'and', 'for', 'the', 'chemical', 'potential', 'mu', 'as', 'a', 'function', 'of', 'a', 'unique', 'dimensionless', 'nonlinear', 'parameter', 'lambda', 'we', 'report', 'solutions', 'for', 'different', 'range', 'of', 'values', 'for', 'the', 'repulsive', 'and', 'the', 'attractive', 'nonlinear', 'interactions', 'in', 'the', 'condensate', 'also', 'we', 'study', 'a', 'bright', 'solitonlike', 'variational', 'solution', 'for', 'the', 'order', 'parameter', 'for', 'positive', 'and', 'negative', 'values', 'of', 'lambda', 'introducing', 'an', 'accumulated', 'error', 'function', 'we', 'have', 'performed', 'a', 'quantitative', 'analysis', 'with', 'other', 'wellestablished', 'methods', 'as', 'the', 'perturbation', 'theory', 'the', 'thomasfermi', 'approximation', 'and', 'the', 'numerical', 'solution', 'this', 'study', 'gives', 'a', 'very', 'useful', 'result', 'establishing', 'the', 'universal', 'range', 'of', 'the', 'lambda', 'values', 'where', 'each', 'solution', 'can', 'be', 'easily', 'implemented', 'in', 'particular', 'we', 'showed', 'that', 'for', 'lambda', '9', 'the', 'bright', 'soliton', 'function', 'reproduces', 'the', 'exact', 'solution', 'of', 'gpe', 'wave', 'function']] | [-0.13733509231135774, 0.03998742097333684, -0.09763359597393863, 0.08952319006760225, -0.06767359294298984, -0.13891967544397732, 0.028411294241816227, 0.3288404290420069, -0.2527768508150754, -0.27613925072036577, 0.05641486154808532, -0.2804709563300696, -0.13271469077829953, 0.18270676708976988, 0.0709829253970947, 0.08919890089938991, 0.03803491527722939, 0.037772642140289844, -0.062401812058966936, -0.18512874088761672, 0.3253393222030226, 0.0036707158121739476, 0.19944582649991965, 0.08158900814320898, 0.11830413328732928, -0.012920874270977793, 0.045758475106812906, 0.03574252630662645, -0.23937581078618525, 0.05786364908087474, 0.2363837107993059, 0.06385342150428136, 0.28804754377933034, -0.3725494927346287, -0.2095881540616843, 0.1189830302733036, 0.17134761712046562, 0.13136010514375504, -0.07357361919941827, -0.2947492037545627, 0.0755766239607523, -0.16540638333461968, -0.1972549674101174, -0.12869802474464015, 0.06350092074348473, 0.07845752667570093, -0.3393554993131211, 0.10827861442111766, 0.005496864613312834, -0.00317452028787262, -0.12685002804681345, -0.12046763915765349, 0.022809524462118903, 0.08528083022093584, 0.04771111543539544, 0.058159213951742936, 0.05494828632062065, -0.15481203301435886, -0.032875693504842866, 0.3505992669887631, -0.1379899192932652, -0.23488354556997057, 0.14227770922810468, -0.11681621992209612, -0.07809129311427684, 0.11929700545258295, 0.11889259380363847, 0.14911954875536998, -0.11846358099506354, 0.11451240462205098, -0.03291963321199021, 0.2069415917921759, 0.05811894312173023, 0.0189004615375536, 0.16042858672420113, 0.16175286384942142, 0.06321603722721142, 0.13222535981585168, -0.058055606972373705, -0.11722257528060549, -0.34340139656839236, -0.15049408694555405, -0.16320373092345158, 0.026934665592832484, -0.1397849128046237, -0.17281879382503126, 0.38889532743356336, 0.11500478850539879, 0.19655379202400505, 0.06543323921013466, 0.24516751063646566, 0.218422097421225, 0.020076058192834877, 0.006717295028452932, 0.25538621726773786, 0.11457942671660648, 0.09879678496959764, -0.22317459691204394, 0.0030487247145879015, 0.076764020924522] |
708.3841 | Mesoscopic gap fluctuations in an unconventional superconductor | We study mesoscopic disorder fluctuations in an anisotropic gap
superconductor, which lead to the spatial variations of the local pairing
temperature and formation of superconducting islands above the mean-field
transition. We derive the probability distribution function of the pairing
temperatures and superconducting gaps. It is shown that above the mean-field
transition, a disordered BCS superconductor with an unusual pairing symmetry is
described by a network of superconducting islands and metallic regions with a
strongly suppressed density of states due to superconducting fluctuations. We
argue that the phenomena associated with mesoscopic disorder fluctuations may
also be relevant to the high-temperature superconductors, in particular, to
recent STM experiments, where gap inhomogeneities have been explicitly
observed. It is suggested that the gap fluctuations in the pseudogap phase
should be directly related to the corresponding fluctuations of the pairing
temperature.
| cond-mat.supr-con cond-mat.dis-nn | we study mesoscopic disorder fluctuations in an anisotropic gap superconductor which lead to the spatial variations of the local pairing temperature and formation of superconducting islands above the meanfield transition we derive the probability distribution function of the pairing temperatures and superconducting gaps it is shown that above the meanfield transition a disordered bcs superconductor with an unusual pairing symmetry is described by a network of superconducting islands and metallic regions with a strongly suppressed density of states due to superconducting fluctuations we argue that the phenomena associated with mesoscopic disorder fluctuations may also be relevant to the hightemperature superconductors in particular to recent stm experiments where gap inhomogeneities have been explicitly observed it is suggested that the gap fluctuations in the pseudogap phase should be directly related to the corresponding fluctuations of the pairing temperature | [['we', 'study', 'mesoscopic', 'disorder', 'fluctuations', 'in', 'an', 'anisotropic', 'gap', 'superconductor', 'which', 'lead', 'to', 'the', 'spatial', 'variations', 'of', 'the', 'local', 'pairing', 'temperature', 'and', 'formation', 'of', 'superconducting', 'islands', 'above', 'the', 'meanfield', 'transition', 'we', 'derive', 'the', 'probability', 'distribution', 'function', 'of', 'the', 'pairing', 'temperatures', 'and', 'superconducting', 'gaps', 'it', 'is', 'shown', 'that', 'above', 'the', 'meanfield', 'transition', 'a', 'disordered', 'bcs', 'superconductor', 'with', 'an', 'unusual', 'pairing', 'symmetry', 'is', 'described', 'by', 'a', 'network', 'of', 'superconducting', 'islands', 'and', 'metallic', 'regions', 'with', 'a', 'strongly', 'suppressed', 'density', 'of', 'states', 'due', 'to', 'superconducting', 'fluctuations', 'we', 'argue', 'that', 'the', 'phenomena', 'associated', 'with', 'mesoscopic', 'disorder', 'fluctuations', 'may', 'also', 'be', 'relevant', 'to', 'the', 'hightemperature', 'superconductors', 'in', 'particular', 'to', 'recent', 'stm', 'experiments', 'where', 'gap', 'inhomogeneities', 'have', 'been', 'explicitly', 'observed', 'it', 'is', 'suggested', 'that', 'the', 'gap', 'fluctuations', 'in', 'the', 'pseudogap', 'phase', 'should', 'be', 'directly', 'related', 'to', 'the', 'corresponding', 'fluctuations', 'of', 'the', 'pairing', 'temperature']] | [-0.19729250495455583, 0.2666257855087358, -0.1082660739775747, 0.11097874084867619, -0.01755971694878741, -0.12819989317315905, 0.06373472920249161, 0.33311480534372523, -0.25110314803382877, -0.26438309707651464, -0.01882117177506991, -0.32501653683207493, -0.12616135879858015, 0.10161351556513075, 0.02122628400513135, 0.015115623701603909, -0.09074313875958871, -0.025655783218526802, -0.1439600602239165, -0.23773570422096835, 0.3834477623869829, 0.058967915870358836, 0.37220793826889026, 0.1183858621524825, -0.026069002883399233, -0.07313965213303592, 0.14967386113301687, 0.0714587806201855, -0.1685505959963206, 0.024779274762241746, 0.2953260481076808, -0.10523513950636912, 0.1888026636271902, -0.4539464825682123, -0.2734392902964507, 0.06579416544820346, 0.1562417943496257, 0.15252878294610556, -0.02370286833919475, -0.3283644925446852, 0.039305322153000706, -0.15484676401726627, -0.14851024491294726, -0.09361262521569562, -0.001877373841125518, 0.00788283817939159, -0.23681105005294634, 0.1174114947213692, 0.06777065840330632, 0.04527795415453832, -0.04577794196666218, -0.07478389080600156, -0.04656012183712686, 0.030336943074978667, 0.055494778722812256, 0.05045861378140912, 0.161423963129089, -0.13063708384630873, -0.055390960031432124, 0.28803668052012865, -0.024453752359156224, -0.054632303282714394, 0.15857673816122664, -0.18051847302943796, -0.0736094921868404, 0.1731335086926051, 0.06554768741240397, 0.027184953895972714, -0.13674435584193012, 0.05153947182883284, -0.016920022852205233, 0.19427260139833807, -0.008860921605339493, 0.10325248372699956, 0.26873848989934607, 0.22347344127517907, 0.056093864322653696, 0.1362458115823649, -0.12270886977057671, -0.09731083364321795, -0.27058698018492366, -0.11854584523654707, -0.2512394456014804, 0.02022969242363401, -0.03391870919596626, -0.2200612518891456, 0.38633278877173055, 0.2009739789089722, 0.22810338704627664, -0.07027742201684947, 0.17425701587104842, 0.1554019199033706, 0.0947601822519894, 0.06404947779853554, 0.22327937670257492, 0.18070753680555807, 0.10804618715637308, -0.33924818774753746, 0.0829479182832395, -0.00996609772932168] |
708.3842 | Triple charged-particle decays of resonances illustrated by 12C-states | The hyperspherical adiabatic expansion is combined with complex scaling and
used to calculate the energy distributions of the particles arising from
three-body decaying low-lying $^{12}$C resonances. The large distance continuum
properties of the wavefunctions are crucial and must be accurately calculated.
The substantial changes from small to large distances determine the decay
mechanisms. We illustrate by computing the energy distributions from decays of
the $1^{-}$, $2^-$ and $4^{-}$-resonances in $^{12}$C. These states are
dominated by sequential ($1^-$), through the $^{8}$Be ground state, and direct
($2^-$, $4^-$) decays.
| nucl-th | the hyperspherical adiabatic expansion is combined with complex scaling and used to calculate the energy distributions of the particles arising from threebody decaying lowlying 12c resonances the large distance continuum properties of the wavefunctions are crucial and must be accurately calculated the substantial changes from small to large distances determine the decay mechanisms we illustrate by computing the energy distributions from decays of the 1 2 and 4resonances in 12c these states are dominated by sequential 1 through the 8be ground state and direct 2 4 decays | [['the', 'hyperspherical', 'adiabatic', 'expansion', 'is', 'combined', 'with', 'complex', 'scaling', 'and', 'used', 'to', 'calculate', 'the', 'energy', 'distributions', 'of', 'the', 'particles', 'arising', 'from', 'threebody', 'decaying', 'lowlying', '12c', 'resonances', 'the', 'large', 'distance', 'continuum', 'properties', 'of', 'the', 'wavefunctions', 'are', 'crucial', 'and', 'must', 'be', 'accurately', 'calculated', 'the', 'substantial', 'changes', 'from', 'small', 'to', 'large', 'distances', 'determine', 'the', 'decay', 'mechanisms', 'we', 'illustrate', 'by', 'computing', 'the', 'energy', 'distributions', 'from', 'decays', 'of', 'the', '1', '2', 'and', '4resonances', 'in', '12c', 'these', 'states', 'are', 'dominated', 'by', 'sequential', '1', 'through', 'the', '8be', 'ground', 'state', 'and', 'direct', '2', '4', 'decays']] | [-0.04088374093001665, 0.2497909406855226, -0.06480421503561787, 0.14971339013996035, 0.040909446174885296, -0.08855786767983159, 0.020369810612633998, 0.30927568328631827, -0.29086573917938524, -0.30556476964117135, 0.014849484574623666, -0.3227996412924556, -0.024417939520072797, 0.12465013392800249, 0.101926481697795, 0.08446528104697029, 0.09605892598195824, -0.004604556944307892, -0.06015551440027911, -0.12705174556305243, 0.349544522477054, 0.052901109436873435, 0.20423524280019148, 0.07824010862481542, 0.005828564769999925, 0.007852359718188297, -0.008800578931736391, -0.06917543365988274, -0.1578289391256349, 0.10943250756226494, 0.19896179400682232, 0.09543783936736196, 0.18053860403368924, -0.4364230831391936, -0.13890552180169455, 0.1312843316321283, 0.19119880901010664, 0.12844561521494544, -0.004950231601765683, -0.3315473165644636, 0.07581319082744939, -0.17106290022994197, -0.1358578888331215, -0.12710320314955573, 0.0599180024934846, 0.058229480415236116, -0.2557818376882879, 0.10550698307126241, -0.04122726773290873, 0.0016306700228258622, -0.09482191545011606, -0.20127235755844172, -0.03150922876273737, 0.16524912022747273, 0.07738872322654568, 0.0038514669204867164, 0.16983550932761932, -0.11838561907237352, -0.10309177811452469, 0.39294827255138826, -0.054309200755385464, -0.15273959092730874, 0.18552286738833024, -0.1554928575642407, -0.08261719207430995, 0.2289300557864873, 0.17729447808571505, 0.10931050253295621, -0.12610675817961955, 0.09201843208541315, 0.05749465372456714, 0.1545753835722111, 0.047280634439355415, 0.03173291505595972, 0.14839875763065594, 0.12024372285448534, -0.03546596310361354, 0.10400452133306021, -0.16298821246857906, -0.11903038880852766, -0.3092249477672022, -0.11622875968947313, -0.2199435393315155, 0.07541450587382843, -0.08042164150995018, -0.09998343059208331, 0.38614130017975734, 0.03231654827872854, 0.25983651674915714, 0.0036597835484805494, 0.2833440310516676, 0.14893101375593348, 0.07047348729399748, 0.10776558236711724, 0.3085822299729253, 0.16222380483956184, 0.018049265090159552, -0.25914322600840745, 0.026954667312417958, -0.00931821872620995] |
708.3843 | Real-time electron dynamics with exact-exchange time-dependent
density-functional theory | The exact exchange potential in time-dependent density-functional theory is
defined as an orbital functional through the time-dependent optimized effective
potential (TDOEP) method. We numerically solve the TDOEP integral equation for
the real-time nonlinear intersubband electron dynamics in a semiconductor
quantum well with two occupied subbands. By comparison with adiabatic
approximations, it is found that memory effects in the exact exchange potential
become significant when the electron dynamics takes place in the vicinity of
intersubband resonances.
| cond-mat.mes-hall | the exact exchange potential in timedependent densityfunctional theory is defined as an orbital functional through the timedependent optimized effective potential tdoep method we numerically solve the tdoep integral equation for the realtime nonlinear intersubband electron dynamics in a semiconductor quantum well with two occupied subbands by comparison with adiabatic approximations it is found that memory effects in the exact exchange potential become significant when the electron dynamics takes place in the vicinity of intersubband resonances | [['the', 'exact', 'exchange', 'potential', 'in', 'timedependent', 'densityfunctional', 'theory', 'is', 'defined', 'as', 'an', 'orbital', 'functional', 'through', 'the', 'timedependent', 'optimized', 'effective', 'potential', 'tdoep', 'method', 'we', 'numerically', 'solve', 'the', 'tdoep', 'integral', 'equation', 'for', 'the', 'realtime', 'nonlinear', 'intersubband', 'electron', 'dynamics', 'in', 'a', 'semiconductor', 'quantum', 'well', 'with', 'two', 'occupied', 'subbands', 'by', 'comparison', 'with', 'adiabatic', 'approximations', 'it', 'is', 'found', 'that', 'memory', 'effects', 'in', 'the', 'exact', 'exchange', 'potential', 'become', 'significant', 'when', 'the', 'electron', 'dynamics', 'takes', 'place', 'in', 'the', 'vicinity', 'of', 'intersubband', 'resonances']] | [-0.1463814583504955, 0.10560200698470397, -0.06119608077258892, 0.12752472678811788, 0.003932012729857066, -0.16273037899821385, 0.04533880933870447, 0.3742118686284513, -0.26466612290744096, -0.3036181385539574, -0.017496576992003885, -0.3096554151493801, -0.18987249124999325, 0.1860473014873593, 0.08621130683395552, 0.0756893543628593, 0.0498686512798224, -0.007746131905699021, -0.054117470038799596, -0.17544034138730127, 0.24792085905010774, 0.04228527358356761, 0.25562877919882127, 0.10706984144571709, 0.08077621294108972, 0.09058488870106561, 0.0745952846737553, -0.010861898963786152, -0.11429260070613116, 0.06649655741575645, 0.2575257109503632, -0.08894443310388964, 0.3144245931100457, -0.513791060713056, -0.2238425091419318, -0.009061390928739095, 0.17719119692808144, 0.17101701053038035, -0.08671609359499935, -0.2935752689277064, -0.02916997820234615, -0.17991215844115574, -0.12471853162812656, -0.1042814208067035, 0.033274061339971135, 0.02707291214586529, -0.2720467465170595, 0.1048163516396714, -0.03092532660269931, -0.0025963019196913665, -0.1353958332081874, -0.06830429868798142, -0.02103033163967504, 0.08566494566613285, 0.006014492764609725, 0.03858081920531719, 0.14675038788238004, -0.08682374161833974, -0.10828783801335791, 0.37540661571674966, -0.11232838328698114, -0.21035333084937644, 0.1232336775514565, -0.13214444571927395, -0.04151375945147178, 0.16811607496124015, 0.12305948129306508, 0.10823984475398105, -0.17419042770391208, 0.1834176820192537, 0.05878709526477407, 0.12070741359310301, 0.00921305285588111, 0.058802964172185695, 0.19918411827250704, 0.14517055907006032, 0.041022109598151016, 0.09690229327430668, -0.09585105769387255, -0.2178601431851722, -0.22376053397582002, -0.10887172796814511, -0.23257282927428205, 0.05666745851798723, -0.07413163115844539, -0.19282689903645892, 0.40205153294724144, 0.12018908108648373, 0.1049893367780398, -0.04744478227085855, 0.33967722717621557, 0.24503758555909697, 0.03348380402256798, 0.047722854153954816, 0.26903180820765354, 0.1625714779429597, 0.09646048843988204, -0.3255149081815034, 0.020909088542557335, 0.06713371103859112] |
708.3844 | Bubbling the False Vacuum Away | We investigate the role of nonperturbative, bubble-like inhomogeneities on
the decay rate of false-vacuum states in two and three-dimensional scalar field
theories. The inhomogeneities are induced by setting up large-amplitude
oscillations of the field about the false vacuum as, for example, after a rapid
quench or in certain models of cosmological inflation. We show that, for a wide
range of parameters, the presence of large-amplitude bubble-like
inhomogeneities greatly accelerates the decay rate, changing it from the
well-known exponential suppression of homogeneous nucleation to a power-law
suppression. It is argued that this fast, power-law vacuum decay -- known as
resonant nucleation -- is promoted by the presence of long-lived oscillons
among the nonperturbative fluctuations about the false vacuum. A phase diagram
is obtained distinguishing three possible mechanisms for vacuum decay:
homogeneous nucleation, resonant nucleation, and cross-over. Possible
applications are briefly discussed.
| hep-th cond-mat.stat-mech hep-lat nlin.PS | we investigate the role of nonperturbative bubblelike inhomogeneities on the decay rate of falsevacuum states in two and threedimensional scalar field theories the inhomogeneities are induced by setting up largeamplitude oscillations of the field about the false vacuum as for example after a rapid quench or in certain models of cosmological inflation we show that for a wide range of parameters the presence of largeamplitude bubblelike inhomogeneities greatly accelerates the decay rate changing it from the wellknown exponential suppression of homogeneous nucleation to a powerlaw suppression it is argued that this fast powerlaw vacuum decay known as resonant nucleation is promoted by the presence of longlived oscillons among the nonperturbative fluctuations about the false vacuum a phase diagram is obtained distinguishing three possible mechanisms for vacuum decay homogeneous nucleation resonant nucleation and crossover possible applications are briefly discussed | [['we', 'investigate', 'the', 'role', 'of', 'nonperturbative', 'bubblelike', 'inhomogeneities', 'on', 'the', 'decay', 'rate', 'of', 'falsevacuum', 'states', 'in', 'two', 'and', 'threedimensional', 'scalar', 'field', 'theories', 'the', 'inhomogeneities', 'are', 'induced', 'by', 'setting', 'up', 'largeamplitude', 'oscillations', 'of', 'the', 'field', 'about', 'the', 'false', 'vacuum', 'as', 'for', 'example', 'after', 'a', 'rapid', 'quench', 'or', 'in', 'certain', 'models', 'of', 'cosmological', 'inflation', 'we', 'show', 'that', 'for', 'a', 'wide', 'range', 'of', 'parameters', 'the', 'presence', 'of', 'largeamplitude', 'bubblelike', 'inhomogeneities', 'greatly', 'accelerates', 'the', 'decay', 'rate', 'changing', 'it', 'from', 'the', 'wellknown', 'exponential', 'suppression', 'of', 'homogeneous', 'nucleation', 'to', 'a', 'powerlaw', 'suppression', 'it', 'is', 'argued', 'that', 'this', 'fast', 'powerlaw', 'vacuum', 'decay', 'known', 'as', 'resonant', 'nucleation', 'is', 'promoted', 'by', 'the', 'presence', 'of', 'longlived', 'oscillons', 'among', 'the', 'nonperturbative', 'fluctuations', 'about', 'the', 'false', 'vacuum', 'a', 'phase', 'diagram', 'is', 'obtained', 'distinguishing', 'three', 'possible', 'mechanisms', 'for', 'vacuum', 'decay', 'homogeneous', 'nucleation', 'resonant', 'nucleation', 'and', 'crossover', 'possible', 'applications', 'are', 'briefly', 'discussed']] | [-0.1630756730834643, 0.2641272700486192, -0.07035137140664502, 0.14265904683734465, -0.028780107791333095, -0.1254505900517646, 0.015372210560177547, 0.30839047499804123, -0.2458967961559909, -0.28441677410560456, 0.07301109574694672, -0.21235655231235348, -0.1133005737674598, 0.18244219482100257, 0.03791983267359868, 0.02281400782690532, 0.006513091465593248, -0.011262162629029026, -0.014818157018769694, -0.2370547288218918, 0.33728084310153633, 0.07029369104302664, 0.2875837128781511, 0.0594887890468311, 0.03677165535939993, -0.0339095995987536, 0.00195411988871469, -0.013217332135157092, -0.17675451342454282, -0.004514969010125386, 0.14739826991530391, 0.07187769590013161, 0.22185695210498743, -0.4147993216992936, -0.25735563680907525, 0.12169016808004834, 0.1952158776246875, 0.18037977556536056, -0.10341760687246594, -0.29077005237205955, 0.050553053678215845, -0.13154219860798153, -0.17485164436505368, -0.08376956018416779, 0.044392347374620535, -0.013163195275094198, -0.2736199154203042, 0.16048310160724635, 0.027375682311105556, -0.006925568527852495, -0.0772368918616743, -0.03662857908984997, -0.004095080673046734, 0.040910443967626685, 0.14464099229603627, 0.022380739095303623, 0.20450440099786804, -0.1948075479561247, -0.10433243202345878, 0.3315458817937263, -0.11803555811174969, -0.07640690840375812, 0.15997037952900797, -0.16878721615353573, -0.07928240518895505, 0.22090237141600338, 0.11040784299130672, 0.11418092435738747, -0.10684345742228671, 0.08375829020498213, 0.05319141629286974, 0.13958146520620346, 0.1329092475504655, 0.06275372449443609, 0.2627814688206907, 0.17372314189223276, -0.01360694480304053, 0.14558279029755056, -0.06980724195254616, -0.13689745992061048, -0.3709705293581794, -0.11580745613985303, -0.1322726497757316, 0.09202785975050073, -0.11421934208656372, -0.20666981627489778, 0.3972566784022079, 0.08582191856281049, 0.1684699693215552, -0.03188620796224669, 0.21593457957108816, 0.07112042894047024, 0.05504857570243379, 0.042289050566899314, 0.2975863131451542, 0.15913676868017385, 0.11391300427983853, -0.29383814330314, 0.05115497157827992, -0.002107759885341469] |
708.3845 | Non-supersymmetric microstates of the D1-D5-KK system | We construct a discrete family of smooth non-supersymmetric three charge
geometries carrying D1 brane, D5 brane and Kaluza-Klein monopole charges in
Type IIB supergravity compactified on a six-torus, which can be interpreted as
the geometric description of some special states of the brane system. These
solutions are asymptotically flat in four dimensions, and generalise previous
supersymmetric solutions. The solutions have a qualitatively similar structure
to previous non-supersymmetric smooth solutions carrying D1 and D5 brane
charges in five dimensions, and indeed can be viewed as the five-dimensional
system placed at the core of a Kaluza-Klein monopole. The geometries are
smooth, free of horizons and do not have closed timelike curves. One notable
difference from the five-dimensional case is that the four-dimensional geometry
has no ergoregion.
| hep-th | we construct a discrete family of smooth nonsupersymmetric three charge geometries carrying d1 brane d5 brane and kaluzaklein monopole charges in type iib supergravity compactified on a sixtorus which can be interpreted as the geometric description of some special states of the brane system these solutions are asymptotically flat in four dimensions and generalise previous supersymmetric solutions the solutions have a qualitatively similar structure to previous nonsupersymmetric smooth solutions carrying d1 and d5 brane charges in five dimensions and indeed can be viewed as the fivedimensional system placed at the core of a kaluzaklein monopole the geometries are smooth free of horizons and do not have closed timelike curves one notable difference from the fivedimensional case is that the fourdimensional geometry has no ergoregion | [['we', 'construct', 'a', 'discrete', 'family', 'of', 'smooth', 'nonsupersymmetric', 'three', 'charge', 'geometries', 'carrying', 'd1', 'brane', 'd5', 'brane', 'and', 'kaluzaklein', 'monopole', 'charges', 'in', 'type', 'iib', 'supergravity', 'compactified', 'on', 'a', 'sixtorus', 'which', 'can', 'be', 'interpreted', 'as', 'the', 'geometric', 'description', 'of', 'some', 'special', 'states', 'of', 'the', 'brane', 'system', 'these', 'solutions', 'are', 'asymptotically', 'flat', 'in', 'four', 'dimensions', 'and', 'generalise', 'previous', 'supersymmetric', 'solutions', 'the', 'solutions', 'have', 'a', 'qualitatively', 'similar', 'structure', 'to', 'previous', 'nonsupersymmetric', 'smooth', 'solutions', 'carrying', 'd1', 'and', 'd5', 'brane', 'charges', 'in', 'five', 'dimensions', 'and', 'indeed', 'can', 'be', 'viewed', 'as', 'the', 'fivedimensional', 'system', 'placed', 'at', 'the', 'core', 'of', 'a', 'kaluzaklein', 'monopole', 'the', 'geometries', 'are', 'smooth', 'free', 'of', 'horizons', 'and', 'do', 'not', 'have', 'closed', 'timelike', 'curves', 'one', 'notable', 'difference', 'from', 'the', 'fivedimensional', 'case', 'is', 'that', 'the', 'fourdimensional', 'geometry', 'has', 'no', 'ergoregion']] | [-0.1619766271042247, 0.11441218038089573, -0.05094467279981942, 0.12185449367708286, -0.08619565907640443, -0.222435416548603, -0.06519589753400895, 0.30496281045376356, -0.08445330620968654, -0.22695543681883493, 0.12213969445738551, -0.3051392121349401, -0.1007327592458516, 0.1319067569894551, -0.1117366559713358, 0.010640761109008905, -0.02903694652336379, 0.05578835779095009, -0.09864090810597484, -0.2685609865584411, 0.38395921595680016, -0.05838763822260174, 0.27337718089937324, 0.00042188853765236993, 0.07208135974548396, -0.08019680039010822, 0.0687952610859347, 0.09338112391020742, -0.13883869956255018, 0.10504924662874997, 0.24299384552925343, 0.06779040497983055, 0.05658190439627957, -0.459243840117368, -0.2632091310055506, 0.12037027051912681, 0.24882559709611438, 0.19130707084813395, -0.02926033184086273, -0.26549097096299634, 0.04905721401014636, -0.18016929615799698, -0.2285419852555459, -0.08512669352949748, 0.01630992927934013, -0.07166318647984055, -0.18546002338154077, 0.052061924414198484, 0.042796721186248526, 0.025224088112853708, -0.12386046295925494, -0.08791023165817492, -0.14739474863745272, 0.0647605731444914, 0.15887994813965634, 0.03135910754152123, 0.11368247353276538, -0.10181665111843857, -0.18134936194063253, 0.32344608006749165, -0.056097809758578095, -0.3158641249962872, 0.18026879558249587, -0.15384691367451583, -0.10265668821445997, 0.15251446192832513, 0.09288554035517718, 0.24108153883548034, -0.10575862052792218, 0.24669233131768828, -0.06912023687900434, 0.12194531762431707, 0.1699643511956017, 0.06404346640638617, 0.3230605728007973, 0.0962343553997456, 0.06029180883600812, 0.13480841094203624, -0.036567565522179185, -0.14571104608917412, -0.44262890259344734, -0.10862506914793724, -0.09098348521529848, 0.1573003415383761, -0.1911120094839369, -0.2032864984254458, 0.3548330387491132, -0.015215214935221499, 0.1868550914317189, 0.0010540372036742947, 0.14942623173532588, 0.022088345187160397, 0.06507751587853436, 0.07107090224106345, 0.29207437408026193, 0.06159535726352084, 0.10384805983818707, -0.19961060558055196, -0.1983297717674906, 0.19599390725019358] |
708.3846 | Simulating Reionization: Character and Observability | In recent years there has been considerable progress in our understanding of
the nature and properties of the reionization process. In particular, the
numerical simulations of this epoch have made a qualitative leap forward,
reaching sufficiently large scales to derive the characteristic scales of the
reionization process and thus allowing for realistic observational predictions.
Our group has recently performed the first such large-scale radiative transfer
simulations of reionization, run on top of state-of-the-art simulations of
early structure formation. This allowed us to make the first realistic
observational predictions about the Epoch of Reionization based on detailed
radiative transfer and structure formation simulations. We discuss the basic
features of reionization derived from our simulations and some recent results
on the observational implications for the high-redshift Ly-alpha sources.
| astro-ph | in recent years there has been considerable progress in our understanding of the nature and properties of the reionization process in particular the numerical simulations of this epoch have made a qualitative leap forward reaching sufficiently large scales to derive the characteristic scales of the reionization process and thus allowing for realistic observational predictions our group has recently performed the first such largescale radiative transfer simulations of reionization run on top of stateoftheart simulations of early structure formation this allowed us to make the first realistic observational predictions about the epoch of reionization based on detailed radiative transfer and structure formation simulations we discuss the basic features of reionization derived from our simulations and some recent results on the observational implications for the highredshift lyalpha sources | [['in', 'recent', 'years', 'there', 'has', 'been', 'considerable', 'progress', 'in', 'our', 'understanding', 'of', 'the', 'nature', 'and', 'properties', 'of', 'the', 'reionization', 'process', 'in', 'particular', 'the', 'numerical', 'simulations', 'of', 'this', 'epoch', 'have', 'made', 'a', 'qualitative', 'leap', 'forward', 'reaching', 'sufficiently', 'large', 'scales', 'to', 'derive', 'the', 'characteristic', 'scales', 'of', 'the', 'reionization', 'process', 'and', 'thus', 'allowing', 'for', 'realistic', 'observational', 'predictions', 'our', 'group', 'has', 'recently', 'performed', 'the', 'first', 'such', 'largescale', 'radiative', 'transfer', 'simulations', 'of', 'reionization', 'run', 'on', 'top', 'of', 'stateoftheart', 'simulations', 'of', 'early', 'structure', 'formation', 'this', 'allowed', 'us', 'to', 'make', 'the', 'first', 'realistic', 'observational', 'predictions', 'about', 'the', 'epoch', 'of', 'reionization', 'based', 'on', 'detailed', 'radiative', 'transfer', 'and', 'structure', 'formation', 'simulations', 'we', 'discuss', 'the', 'basic', 'features', 'of', 'reionization', 'derived', 'from', 'our', 'simulations', 'and', 'some', 'recent', 'results', 'on', 'the', 'observational', 'implications', 'for', 'the', 'highredshift', 'lyalpha', 'sources']] | [-0.04413026251224062, 0.035018551621645216, -0.0880288201576424, 0.06699043345958801, -0.09948522733554008, -0.03158396754842547, 0.01891650836027804, 0.39948418890199966, -0.18498110530033177, -0.3347860281725252, 0.09554004640824768, -0.24664893361789705, -0.09024127082721818, 0.22647177852461084, 0.07281787648782252, 0.0708288707666927, 0.12833386970247837, -0.08879852372532089, -0.0454673405130586, -0.2972766923725546, 0.3022498707213099, 0.1773593623693737, 0.22998511110984957, 0.0588661717964218, 0.06697854738948601, -0.08563974341340659, -0.15825217748282566, -0.042231682971644674, -0.22332970254004947, 0.0763844202553469, 0.20471763761625403, 0.15677043201497917, 0.2640201276619106, -0.5076994716766334, -0.2950832957165345, 0.07149348156674513, 0.1485276924167198, 0.1615675253807918, -0.1268585651867195, -0.2685184333739536, 0.07100486007356455, -0.16742364988322295, -0.07115958093680323, -0.02957164997416031, 0.048772992913626016, -0.015259674946141858, -0.23809108592566133, 0.05092388836275195, 0.0024722531393525145, 0.04156156016203264, -0.02523515161541697, -0.09429499268945721, -0.006356445231681896, 0.15753140006425037, 0.024233127946481258, 0.0021017215303367094, 0.13042221925339648, -0.18962204940099683, -0.11081260156684689, 0.39739836090880015, -0.05386926323944141, -0.03021424010189043, 0.23964208489402183, -0.2118343114668119, -0.2056520450712433, 0.11505579965795198, 0.18248437562336525, 0.09759540017694235, -0.08117640531891661, 0.050079557872820826, -0.011136536878193654, 0.18270370303579267, -0.006830197818104237, 0.006680792204976555, 0.272427179407151, 0.2331287475239988, -0.024265306863179875, 0.06271057696976064, -0.11377939631578528, -0.11563809194772076, -0.2879454543784497, -0.08764692068484331, -0.11028385397401594, 0.13200662769968546, -0.11351680680176258, -0.10341643449242434, 0.39803051890154917, 0.24110956137098136, 0.22036820435748686, 0.06836945871593401, 0.33108525677391937, 0.05339167381559188, 0.03306236275700882, 0.02960072983507185, 0.29739895677087747, 0.16445686728767459, 0.11222272274261784, -0.22525141141857832, 0.10883398605917122, -0.023554675159088913] |
708.3847 | Tropical Lines on Cubic Surfaces | Given a tropical line $L$ and a smooth tropical surface $X$, we look at the
position of $L$ on $X$. We introduce its primal and dual motif which are
respectively a decorated graph and a subcomplex of the dual triangulation of
$X$. They encode the combinatorial position of $L$ on $X$. We classify all
possible motifs of tropical lines on general smooth tropical surfaces. This
classification allows to give an upper bound for the number of tropical lines
on a general smooth tropical surface with a given subdivision. We focus in
particular on surfaces of degree three. As a concrete example, we look at
tropical cubic surfaces dual to a fixed honeycomb triangulation, showing that a
general surface contains exactly $27$ tropical lines.
| math.AG math.CO | given a tropical line l and a smooth tropical surface x we look at the position of l on x we introduce its primal and dual motif which are respectively a decorated graph and a subcomplex of the dual triangulation of x they encode the combinatorial position of l on x we classify all possible motifs of tropical lines on general smooth tropical surfaces this classification allows to give an upper bound for the number of tropical lines on a general smooth tropical surface with a given subdivision we focus in particular on surfaces of degree three as a concrete example we look at tropical cubic surfaces dual to a fixed honeycomb triangulation showing that a general surface contains exactly 27 tropical lines | [['given', 'a', 'tropical', 'line', 'l', 'and', 'a', 'smooth', 'tropical', 'surface', 'x', 'we', 'look', 'at', 'the', 'position', 'of', 'l', 'on', 'x', 'we', 'introduce', 'its', 'primal', 'and', 'dual', 'motif', 'which', 'are', 'respectively', 'a', 'decorated', 'graph', 'and', 'a', 'subcomplex', 'of', 'the', 'dual', 'triangulation', 'of', 'x', 'they', 'encode', 'the', 'combinatorial', 'position', 'of', 'l', 'on', 'x', 'we', 'classify', 'all', 'possible', 'motifs', 'of', 'tropical', 'lines', 'on', 'general', 'smooth', 'tropical', 'surfaces', 'this', 'classification', 'allows', 'to', 'give', 'an', 'upper', 'bound', 'for', 'the', 'number', 'of', 'tropical', 'lines', 'on', 'a', 'general', 'smooth', 'tropical', 'surface', 'with', 'a', 'given', 'subdivision', 'we', 'focus', 'in', 'particular', 'on', 'surfaces', 'of', 'degree', 'three', 'as', 'a', 'concrete', 'example', 'we', 'look', 'at', 'tropical', 'cubic', 'surfaces', 'dual', 'to', 'a', 'fixed', 'honeycomb', 'triangulation', 'showing', 'that', 'a', 'general', 'surface', 'contains', 'exactly', '27', 'tropical', 'lines']] | [-0.17902256791078583, 0.05686165463442941, -0.06544511745176543, 0.07557685720465501, -0.08847706192324499, -0.15678984825537215, 0.06711632059508466, 0.35625298085766355, -0.30205288508195216, -0.22104928533478482, 0.09871544634707545, -0.25242577672084676, -0.20518014125707673, 0.18510060582491683, -0.15106031261914507, -0.04465845702414787, 0.0016868942288485, 0.07193769114489508, -0.11532011898881633, -0.2921305789029684, 0.33642368594835687, -0.02956692187675858, 0.19803622265997517, 0.07153893835327732, 0.11857052684981163, 0.011842853218370034, 0.01621310715374302, 0.07026738010922341, -0.17364455840241105, 0.1748496586896055, 0.28261536144749905, 0.13211539919238266, 0.12838411188828266, -0.4287188157015215, -0.1603187478348098, 0.16218063523008572, 0.05755874655413919, 0.04647904622455589, -0.00688976665099371, -0.16168842297350247, 0.04964452134672462, -0.03539496061226024, -0.191062716095201, -0.019826382307744608, 0.059696727901757736, 0.016162739953071607, -0.20417483365238925, -0.07034460974221186, 0.08728082846410996, 0.1603375425677258, -7.160022103310964e-05, -0.15476547088947268, -0.15164339317130002, 0.04163462857950509, -0.09387194018477832, 0.09502825302704108, 0.07543117473492535, -0.07573018273375588, -0.08224461841343986, 0.35383610578814173, -0.044569098996377086, -0.20459837730731664, 0.19486576849708287, -0.15246083589111706, -0.1649791675589494, 0.17293237266320038, 0.2105385512567875, 0.1985399555112046, -0.03393032613808546, 0.13192932620101297, -0.16225269030234435, 0.08590653853687813, 0.12608605373756793, -0.04817862416346883, 0.23812924512487843, 0.13094283783206398, 0.13791197965421328, 0.16161445636497204, -0.11933172938065618, -0.04387981315546601, -0.36774894101469496, -0.17476701909322215, -0.13514283653140463, 0.10800156298441797, -0.14989148584590578, -0.23059284610567782, 0.4079977099185552, 0.013732387653998727, 0.2524046337807445, 0.07778870574164591, 0.21815169350304678, 0.04141425788005042, -0.006797785670080078, 0.06825899164669397, 0.10722303849349661, 0.16020605518535627, -0.0021005458334778866, -0.13979560961166956, -0.0014892340262942926, 0.2029257573081347] |
708.3848 | The Second Stars | The ejecta of the first probably very massive stars polluted the Big Bang
primordial element mix with the first heavier elements. The resulting ultra
metal-poor abundance distribution provided the initial conditions for the
second stars of a wide range of initial masses reaching down to intermediate
and low masses. The importance of these second stars for understanding the
origin of the elements in the early universe are manifold. While the massive
first stars have long vanished the second stars are still around and currently
observed. They are the carriers of the information about the first stars, but
they are also capable of nuclear production themselves. For example, in order
to use ultra or extremely metal-poor stars as a probe for the r-process in the
early universe a reliable model of the s-process in the second stars is needed.
Eventually, the second stars may provide us with important clues on questions
ranging from structure formation to how the stars actually make the elements,
not only in the early but also in the present universe. In particular the
C-rich extremely metal-poor stars, most of which show the s-process signature,
are thought to be associated with chemical yields from the evolved giant phase
of intermediate mass stars. Models of such AGB stars at extremely low
metallicity now exist, and comparison with observation show important
discrepancies, for example with regard to the synthesis of nitrogen. This may
hint at burning and mixing aspects of extremely metal-poor evolved stars that
are not yet included in the standard picture of evolution, as for example the
hydrogen-ingestion flash. The second stars of intermediate mass may have also
played an important role in the formation of heavy elements that form through
slow neutron capture reaction chains (s-process). Comparison of models with
observations reveal which aspects of the physics input and assumptions need to
be improved. The s-process is a particularly useful diagnostic tool for probing
the physical processes that are responsible for the creation of elements in
stars, like for example rotation. As new observational techniques and
strategies continue to penetrate the field, for example the multi-object
spectroscopy, or the future spectroscopic surveys, the extremely metal-poor
stars will play an increasingly important role to address some of the most
fundamental and challenging, current questions of astronomy.
| astro-ph | the ejecta of the first probably very massive stars polluted the big bang primordial element mix with the first heavier elements the resulting ultra metalpoor abundance distribution provided the initial conditions for the second stars of a wide range of initial masses reaching down to intermediate and low masses the importance of these second stars for understanding the origin of the elements in the early universe are manifold while the massive first stars have long vanished the second stars are still around and currently observed they are the carriers of the information about the first stars but they are also capable of nuclear production themselves for example in order to use ultra or extremely metalpoor stars as a probe for the rprocess in the early universe a reliable model of the sprocess in the second stars is needed eventually the second stars may provide us with important clues on questions ranging from structure formation to how the stars actually make the elements not only in the early but also in the present universe in particular the crich extremely metalpoor stars most of which show the sprocess signature are thought to be associated with chemical yields from the evolved giant phase of intermediate mass stars models of such agb stars at extremely low metallicity now exist and comparison with observation show important discrepancies for example with regard to the synthesis of nitrogen this may hint at burning and mixing aspects of extremely metalpoor evolved stars that are not yet included in the standard picture of evolution as for example the hydrogeningestion flash the second stars of intermediate mass may have also played an important role in the formation of heavy elements that form through slow neutron capture reaction chains sprocess comparison of models with observations reveal which aspects of the physics input and assumptions need to be improved the sprocess is a particularly useful diagnostic tool for probing the physical processes that are responsible for the creation of elements in stars like for example rotation as new observational techniques and strategies continue to penetrate the field for example the multiobject spectroscopy or the future spectroscopic surveys the extremely metalpoor stars will play an increasingly important role to address some of the most fundamental and challenging current questions of astronomy | [['the', 'ejecta', 'of', 'the', 'first', 'probably', 'very', 'massive', 'stars', 'polluted', 'the', 'big', 'bang', 'primordial', 'element', 'mix', 'with', 'the', 'first', 'heavier', 'elements', 'the', 'resulting', 'ultra', 'metalpoor', 'abundance', 'distribution', 'provided', 'the', 'initial', 'conditions', 'for', 'the', 'second', 'stars', 'of', 'a', 'wide', 'range', 'of', 'initial', 'masses', 'reaching', 'down', 'to', 'intermediate', 'and', 'low', 'masses', 'the', 'importance', 'of', 'these', 'second', 'stars', 'for', 'understanding', 'the', 'origin', 'of', 'the', 'elements', 'in', 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