Dynamics of a many-particle Landau-Zener model

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dc.contributor Aalto-yliopisto fi
dc.contributor Aalto University en
dc.contributor.author Itin, A. P.
dc.contributor.author Törmä, Päivi
dc.date.accessioned 2016-09-23T09:32:04Z
dc.date.issued 2009-05-01
dc.identifier.citation Itin , A P & Törmä , P 2009 , ' Dynamics of a many-particle Landau-Zener model : Inverse sweep ' PHYSICAL REVIEW A , vol 79 , no. 5 , 055602 , pp. 1-3 . DOI: 10.1103/PhysRevA.79.055602 en
dc.identifier.issn 1050-2947
dc.identifier.issn 1094-1622
dc.identifier.other PURE UUID: fe2254e0-66a1-4dfd-b151-1f4bd9bf8fa6
dc.identifier.other PURE ITEMURL: https://research.aalto.fi/en/publications/dynamics-of-a-manyparticle-landauzener-model(fe2254e0-66a1-4dfd-b151-1f4bd9bf8fa6).html
dc.identifier.other PURE LINK: http://www.scopus.com/inward/record.url?scp=66049136207&partnerID=8YFLogxK
dc.identifier.other PURE FILEURL: https://research.aalto.fi/files/2477520/PhysRevA.79.pdf
dc.identifier.uri https://aaltodoc.aalto.fi/handle/123456789/22493
dc.description.abstract We consider dynamics of a slowly time-dependent Dicke model, which represents a many-body generalization of the Landau-Zener model. In particular, the model describes narrow Feshbach resonance passage in an ultracold gas of Fermi atoms. Adiabaticity is destroyed when a parameter crosses a critical value, even at very slow sweeping rates of a parameter. The dynamics crucially depends on direction of the sweep. We apply our recent analysis (A. P. Itin and P. Törmö, e-print arXiv:0901.4778) to the "inverse" sweep through the resonance, corresponding (in a context of Feshbach resonance passage) to dissociation of molecules. On a level of the mean-field approximation, the dynamics is equivalent to a molecular condensate formation from Bose atoms within a two-mode model. Mapping the system to a Painlevã equation allows us to calculate deviation from adiabaticity at very slow sweeps analytically. en
dc.format.extent 3
dc.format.extent 1-3
dc.format.mimetype application/pdf
dc.language.iso en en
dc.relation.ispartofseries PHYSICAL REVIEW A en
dc.relation.ispartofseries Volume 79, issue 5 en
dc.rights openAccess en
dc.subject.other Atomic and Molecular Physics, and Optics en
dc.subject.other 114 Physical sciences en
dc.subject.other 221 Nanotechnology en
dc.subject.other 214 Mechanical engineering en
dc.subject.other 218 Environmental engineering en
dc.title Dynamics of a many-particle Landau-Zener model en
dc.type A1 Alkuperäisartikkeli tieteellisessä aikakauslehdessä fi
dc.description.version Peer reviewed en
dc.contributor.department School services, SCI
dc.contributor.department Department of Applied Physics
dc.subject.keyword boson systems
dc.subject.keyword dissociation
dc.subject.keyword fermion systems
dc.subject.keyword radiation pressure
dc.subject.keyword Atomic and Molecular Physics, and Optics
dc.subject.keyword 114 Physical sciences
dc.subject.keyword 221 Nanotechnology
dc.subject.keyword 214 Mechanical engineering
dc.subject.keyword 218 Environmental engineering
dc.identifier.urn URN:NBN:fi:aalto-201609234496
dc.identifier.doi 10.1103/PhysRevA.79.055602
dc.type.version publishedVersion

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