Sharp crossover from composite fermionization to phase separation in microscopic mixtures of ultracold bosons

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dc.contributor.author Garcia-March, Miguel A.
dc.contributor.author Julia-Diaz, B.
dc.contributor.author Astrakharchik, G. E.
dc.contributor.author Busch, Thomas
dc.contributor.author Boronat, J.
dc.contributor.author Polls, A.
dc.date.accessioned 2017-08-22T08:56:58Z
dc.date.available 2017-08-22T08:56:58Z
dc.date.issued 2013
dc.identifier.citation Garcia-March, M. A., Juliá-Díaz, B., Astrakharchik, G. E., Busch, T., Boronat, J. and Polls, A. (2013) 'Sharp crossover from composite fermionization to phase separation in microscopic mixtures of ultracold bosons', Physical Review A, 88(6), 063604. (5pp). doi: 10.1103/PhysRevA.88.063604 en
dc.identifier.volume 88
dc.identifier.issued 6
dc.identifier.issn 1050-2947
dc.identifier.issn 1094-1622
dc.identifier.uri http://hdl.handle.net/10468/4486
dc.identifier.doi 10.1103/PhysRevA.88.063604
dc.description.abstract We show that a two-component mixture of a few repulsively interacting ultracold atoms in a one-dimensional trap possesses very diverse quantum regimes and that the crossover between them can be induced by tuning the interactions in one of the species. Starting from the composite fermionization regime, in which the interactions between both components are large and neither gas is phase coherent, our results show that a phase-separated state can be reached by increasing the interaction in one of the species. In this regime, the weakly interacting component stays at the center of the trap and becomes almost fully phase coherent, while the strongly interacting one is expelled to the edges of the trap. The crossover is sharp, as can be witnessed in the system's energy and in the occupation of the lowest natural orbital of the weakly interacting species. We show that such a transition is a few-atom effect which disappears for a large population imbalance. en
dc.description.sponsorship Science Foundation Ireland (10/IN.1/I2979); Dirección General de Investigación Científica y Técnica (FIS2011-25275, FIS2008-00784); Generalitat de Catalunya (2009SGR-1003, 2009SGR-01289) en
dc.format.mimetype application/pdf en
dc.language.iso en en
dc.publisher American Physical Society en
dc.relation.uri https://journals.aps.org/pra/abstract/10.1103/PhysRevA.88.063604
dc.rights © 2013, American Physical Society en
dc.subject Bose-einstein condensate en
dc.subject Tonks-girardeau gas en
dc.subject States en
dc.subject Atoms en
dc.title Sharp crossover from composite fermionization to phase separation in microscopic mixtures of ultracold bosons en
dc.type Article (peer-reviewed) en
dc.internal.authorcontactother Thomas Busch, Physics, University College Cork, Cork, Ireland. +353-21-490-3000. Email: thbusch@phys.ucc.ie en
dc.internal.availability Full text available en
dc.description.version Published Version en
dc.internal.wokid WOS:000328568500008
dc.contributor.funder Science Foundation Ireland
dc.contributor.funder Dirección General de Investigación Científica y Técnica
dc.contributor.funder Generalitat de Catalunya
dc.contributor.funder Ministerio de Educación, Cultura y Deporte
dc.description.status Peer reviewed en
dc.identifier.journaltitle Physical Review A en
dc.internal.IRISemailaddress thbusch@phys.ucc.ie en
dc.identifier.articleid 63604


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