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dc.contributor.authorYang, Li
Guan, Liming
Pu, Han
dc.date.accessioned 2016-06-23T16:02:12Z
dc.date.available 2016-06-23T16:02:12Z
dc.date.issued 2015
dc.identifier.citation Yang, Li, Guan, Liming and Pu, Han. "Strongly interacting quantum gases in one-dimensional traps." Physical Review A, 91, no. 4 (2015) American Physical Society: 043634. http://dx.doi.org/10.1103/PhysRevA.91.043634.
dc.identifier.urihttps://hdl.handle.net/1911/90551
dc.description.abstract Under 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.
dc.language.iso eng
dc.publisher American Physical Society
dc.rights Article 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.
dc.title Strongly interacting quantum gases in one-dimensional traps
dc.type Journal article
dc.citation.journalTitle Physical Review A
dc.contributor.org Rice Quantum Institute
dc.citation.volumeNumber 91
dc.citation.issueNumber 4
dc.type.dcmi Text
dc.identifier.doihttp://dx.doi.org/10.1103/PhysRevA.91.043634
dc.type.publication publisher version
dc.citation.firstpage 043634


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