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Article: Excitation Spectra And Hard-core Thermodynamics Of Bosonic Atoms In Optical Superlattices

TitleExcitation Spectra And Hard-core Thermodynamics Of Bosonic Atoms In Optical Superlattices
Authors
Issue Date2015
PublisherAmerican Physical Society. The Journal's web site is located at http://pra.aps.org
Citation
Physical Review A (Atomic, Molecular and Optical Physics), 2015, v. 91 n. 1, article no. 013617 How to Cite?
AbstractA generalized double-well-basis coupled representation is proposed to investigate excitation spectra and thermodynamics of bosonic atoms in double-well optical superlattices. In the hard-core limit and with a filling factor of one, excitations describing the creation of pairs of a doubly occupied state and a simultaneous empty state, and those from a symmetric singly occupied state to an antisymmetric state are carefully analyzed and their excitation spectra are calculated within mean-field theory. Based on the hard-core statistics, the equilibrium properties such as heat capacity and particle populations are studied in detail. The cases with other filling factors are also briefly discussed.
Persistent Identifierhttp://hdl.handle.net/10722/214466
ISSN
2014 Impact Factor: 2.808
2015 SCImago Journal Rankings: 1.418

 

DC FieldValueLanguage
dc.contributor.authorXu, B-
dc.contributor.authorWu, HY-
dc.contributor.authorZhang, YC-
dc.contributor.authorWang, HT-
dc.contributor.authorLiu, WM-
dc.date.accessioned2015-08-21T11:28:36Z-
dc.date.available2015-08-21T11:28:36Z-
dc.date.issued2015-
dc.identifier.citationPhysical Review A (Atomic, Molecular and Optical Physics), 2015, v. 91 n. 1, article no. 013617-
dc.identifier.issn1050-2947-
dc.identifier.urihttp://hdl.handle.net/10722/214466-
dc.description.abstractA generalized double-well-basis coupled representation is proposed to investigate excitation spectra and thermodynamics of bosonic atoms in double-well optical superlattices. In the hard-core limit and with a filling factor of one, excitations describing the creation of pairs of a doubly occupied state and a simultaneous empty state, and those from a symmetric singly occupied state to an antisymmetric state are carefully analyzed and their excitation spectra are calculated within mean-field theory. Based on the hard-core statistics, the equilibrium properties such as heat capacity and particle populations are studied in detail. The cases with other filling factors are also briefly discussed.-
dc.languageeng-
dc.publisherAmerican Physical Society. The Journal's web site is located at http://pra.aps.org-
dc.relation.ispartofPhysical Review A (Atomic, Molecular and Optical Physics)-
dc.rightsPhysical Review A (Atomic, Molecular and Optical Physics). Copyright © American Physical Society.-
dc.rightsCreative Commons: Attribution 3.0 Hong Kong License-
dc.titleExcitation Spectra And Hard-core Thermodynamics Of Bosonic Atoms In Optical Superlattices-
dc.typeArticle-
dc.identifier.emailZhang, YC: yicaizha@hku.hk-
dc.description.naturepublished_or_final_version-
dc.identifier.doi10.1103/PhysRevA.91.013617-
dc.identifier.hkuros246729-
dc.identifier.volume91-
dc.identifier.issue1-
dc.publisher.placeUnited States-

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