Magnetic phases and transitions of the two-species Bose-Hubbard model

Simple item page
dc.creatorPowell, Stephen
dc.date2009-02-12
dc.date2009-04-21
dc.date.accessioned2026-07-07T13:12:51Z
dc.date.available2026-07-07T13:12:51Z
dc.descriptionA model of two-species bosons moving on the sites of a lattice is studied at nonzero temperature, focusing on magnetic order and superfluid-insulator transitions. Firstly, Landau theory is used to find the general structure of the phase diagram, and in particular to demonstrate the presence of first-order transitions and hysteresis in the vicinity of a multicritical point. Secondly, an explicit thermodynamic phase diagram is calculated using an approach based on a field-theoretical description of the Bose-Hubbard model, which incorporates the crucial effects of particle-number fluctuations. The maximum transition temperature to a magnetically ordered Mott insulator is found to be limited by the presence of the superfluid phase.
dc.description9 pages, 5 figures; v2: additional phase diagram
dc.identifierhttps://arxiv.org/abs/0902.1993
dc.identifierhttp://arxiv.org/abs/0902.1993
dc.identifierPhys. Rev. A 79, 053614 (2009)
dc.identifierdoi:10.1103/PhysRevA.79.053614
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/229702
dc.subjectStatistical Mechanics
dc.subjectQuantum Gases
dc.subjectSuperconductivity
dc.titleMagnetic phases and transitions of the two-species Bose-Hubbard model
dc.typetext

Files

Collections

arXiv