Ion-induced density bubble in a strongly correlated one-dimensional gas

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dc.contributor.author Goold, John
dc.contributor.author Doerk, H.
dc.contributor.author Idziaszek, Z.
dc.contributor.author Calarco, T.
dc.contributor.author Busch, Thomas
dc.date.accessioned 2017-08-25T10:08:51Z
dc.date.available 2017-08-25T10:08:51Z
dc.date.issued 2010
dc.identifier.citation Goold, J., Doerk, H., Idziaszek, Z., Calarco, T. and Busch, T. (2010) 'Ion-induced density bubble in a strongly correlated one-dimensional gas', Physical Review A, 81(4), 041601 (4pp). doi: 10.1103/PhysRevA.81.041601 en
dc.identifier.volume 81
dc.identifier.issued 4
dc.identifier.issn 1050-2947
dc.identifier.uri http://hdl.handle.net/10468/4530
dc.identifier.doi 10.1103/PhysRevA.81.041601
dc.description.abstract We consider a harmonically trapped Tonks-Girardeau gas of impenetrable bosons in the presence of a single embedded ion, which is assumed to be tightly confined in an RF trap. In an ultracold ion-atom collision the ion's charge induces an electric dipole moment in the atoms which leads to an attractive r(-4) potential asymptotically. We treat the ion as a static deformation of the harmonic trap potential and model its short range interaction with the gas in the framework of quantum defect theory. The molecular bound states of the ionic potential are not populated due to the lack of any possible relaxation process in the Tonks-Girardeau regime. Armed with this knowledge we calculate the density profile of the gas in the presence of a central ionic impurity and show that a density bubble of the order of 1 mu m occurs around the ion for typical experimental parameters. From these exact results we show that an ionic impurity in a Tonks gas can be described using a pseudopotential approximation, allowing for significantly easier treatment. 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.81.041601
dc.rights © 2010, American Physical Society en
dc.subject Tonks-Girardeau gas en
dc.subject Impenetrable bosons en
dc.title Ion-induced density bubble in a strongly correlated one-dimensional gas en
dc.type Article (peer-reviewed) en
dc.internal.authorcontactother John Goold, Physics, University College Cork, Cork, Ireland. +353-21-490-3000 Email: jgoold@phys.ucc.ie en
dc.internal.availability Full text available en
dc.description.version Published Version en
dc.internal.wokid WOS:000277227300010
dc.description.status Peer reviewed en
dc.identifier.journaltitle Physical Review A en
dc.internal.IRISemailaddress jgoold@phys.ucc.ie en
dc.identifier.articleid 41601


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