Strongly interacting quantum gases in one-dimensional traps

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dc.citation.firstpage043634en_US
dc.citation.issueNumber4en_US
dc.citation.journalTitlePhysical Review Aen_US
dc.citation.volumeNumber91en_US
dc.contributor.authorYang, Lien_US
dc.contributor.authorGuan, Limingen_US
dc.contributor.authorPu, Hanen_US
dc.contributor.orgRice Quantum Instituteen_US
dc.date.accessioned2016-06-23T16:02:12Zen_US
dc.date.available2016-06-23T16:02:12Zen_US
dc.date.issued2015en_US
dc.description.abstractUnder second-order degenerate perturbation theory, we show that the physics of N particles with arbitrary spin confined in a one-dimensional trap in the strongly interacting regime can be described by superexchange interaction. An effective spin-chain Hamiltonian (non-translationally-invariant Sutherland model) can be constructed from this procedure. For spin-1/2 particles, this model reduces to the non-translationally-invariant Heisenberg model, where a transition between Heisenberg antiferromagnetic (AFM) and ferromagnetic (FM) states is expected to occur when the interaction strength is tuned from the strongly repulsive to the strongly attractive limit. We show that the FM and the AFM states can be distinguished by two different methods: the first is based on their distinct responses to a spin-dependent magnetic gradient, and the second is based on their distinct momentum distributions. We confirm the validity of the spin-chain model by comparison with results obtained from several unbiased techniques.en_US
dc.identifier.citationYang, Li, Guan, Liming and Pu, Han. "Strongly interacting quantum gases in one-dimensional traps." <i>Physical Review A,</i> 91, no. 4 (2015) American Physical Society: 043634. http://dx.doi.org/10.1103/PhysRevA.91.043634.en_US
dc.identifier.doihttp://dx.doi.org/10.1103/PhysRevA.91.043634en_US
dc.identifier.urihttps://hdl.handle.net/1911/90551en_US
dc.language.isoengen_US
dc.publisherAmerican Physical Societyen_US
dc.rightsArticle is made available in accordance with the publisher's policy and may be subject to US copyright law. Please refer to the publisher's site for terms of use.en_US
dc.titleStrongly interacting quantum gases in one-dimensional trapsen_US
dc.typeJournal articleen_US
dc.type.dcmiTexten_US
dc.type.publicationpublisher versionen_US
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