Collective excitations of a trapped Fermi gas at finite temperature

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dc.contributorAalto-yliopistofi
dc.contributorAalto Universityen
dc.contributor.authorKorolyuk, A.
dc.contributor.authorKinnunen, J.J.
dc.contributor.authorTörmä, Päivi
dc.contributor.departmentDepartment of Applied Physicsen
dc.contributor.groupauthorQuantum Dynamicsen
dc.date.accessioned2016-09-08T08:21:59Z
dc.date.issued2014-01
dc.description.abstractWe study collective excitations of a trapped Fermi gas at finite temperature using the Bogoliubov–de Gennes mean-field theory in conjunction with the generalized random-phase approximation. The collective excitations are analyzed through the density response of a monopole excitation. We show the appearance of several modes at the normal-fluid–superfluid phase-transition temperature: Higgs mode–like pairing amplitude modulations, analogues of the second sound in the trapped gas, and an edge mode that is also the strongest mode in the response.en
dc.description.versionPeer revieweden
dc.format.extent7
dc.format.mimetypeapplication/pdf
dc.identifier.citationKorolyuk, A, Kinnunen, J J & Törmä, P 2014, 'Collective excitations of a trapped Fermi gas at finite temperature', Physical Review A, vol. 89, no. 1, 013602, pp. 1-7. https://doi.org/10.1103/PhysRevA.89.013602en
dc.identifier.doi10.1103/PhysRevA.89.013602
dc.identifier.issn1050-2947
dc.identifier.issn2469-9934
dc.identifier.otherPURE UUID: 8a3c9479-5aaf-4a95-9a53-c0015b682c6a
dc.identifier.otherPURE ITEMURL: https://research.aalto.fi/en/publications/8a3c9479-5aaf-4a95-9a53-c0015b682c6a
dc.identifier.otherPURE LINK: http://pra.aps.org/abstract/PRA/v89/i1/e013602
dc.identifier.otherPURE FILEURL: https://research.aalto.fi/files/2445305/PhysRevA.89.pdf
dc.identifier.urihttps://aaltodoc.aalto.fi/handle/123456789/21858
dc.identifier.urnURN:NBN:fi:aalto-201609083744
dc.language.isoenen
dc.publisherAmerican Physical Society
dc.relation.ispartofseriesPhysical Review Aen
dc.relation.ispartofseriesVolume 89, issue 1, pp. 1-7en
dc.rightsopenAccessen
dc.subject.keywordcollective modes
dc.subject.keywordultracold Fermi gases
dc.titleCollective excitations of a trapped Fermi gas at finite temperatureen
dc.typeA1 Alkuperäisartikkeli tieteellisessä aikakauslehdessäfi
dc.type.versionpublishedVersion

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