Mean-field phase diagram of disordered bosons in a lattice at non-zero temperature

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dc.creatorKrutitsky, K. V.
dc.creatorPelster, A.
dc.creatorGraham, R.
dc.date2006-05-06
dc.date2006-09-12
dc.date.accessioned2026-07-07T07:08:47Z
dc.date.available2026-07-07T07:08:47Z
dc.descriptionBosons in a periodic lattice with on-site disorder at low but non-zero temperature are considered within a mean-field theory. The criteria used for the definition of the superfluid, Mott insulator and Bose glass are analysed. Since the compressibility does never vanish at non-zero temperature, it can not be used as a general criterium. We show that the phases are unambiguously distinguished by the superfluid density and the density of states of the low-energy exitations. The phase diagram of the system is calculated. It is shown that even a tiny temperature leads to a significant shift of the boundary between the Bose glass and superfluid.
dc.identifierhttps://arxiv.org/abs/cond-mat/0605163
dc.identifierhttp://arxiv.org/abs/cond-mat/0605163
dc.identifierNew J. Phys. 8, 187 (2006)
dc.identifierdoi:10.1088/1367-2630/8/9/187
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/110837
dc.subjectOther Condensed Matter
dc.subjectDisordered Systems and Neural Networks
dc.titleMean-field phase diagram of disordered bosons in a lattice at non-zero temperature
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