Response functions and superfluid density in a weakly interacting Bose gas with non-quadratic dispersion

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dc.creatorKeeling, Jonathan
dc.date2006-05-19
dc.date.accessioned2026-07-07T07:09:04Z
dc.date.available2026-07-07T07:09:04Z
dc.descriptionMotivated by the experimental search for Bose condensation of quasiparticles in semiconductors, the response functions of a weakly interacting Bose gas, with isotropic but non-quadratic dispersion, are considered. Non-quadratic dispersion modifies the definition of particle current, and leads to modified sum rules for the current-current response function. The effect of these modifications on the Berezhinski-Kosterlitz-Thouless transition is discussed.
dc.description4 pages, 2 figures
dc.identifierhttps://arxiv.org/abs/cond-mat/0605494
dc.identifierhttp://arxiv.org/abs/cond-mat/0605494
dc.identifierPhys. Rev. B 74, 155325 (2006)
dc.identifierdoi:10.1103/PhysRevB.74.155325
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/110927
dc.subjectMesoscale and Nanoscale Physics
dc.titleResponse functions and superfluid density in a weakly interacting Bose gas with non-quadratic dispersion
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