BCS-BEC crossover in a system of microcavity polaritons

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dc.creatorKeeling, Jonathan
dc.creatorEastham, P. R.
dc.creatorSzymanska, M. H.
dc.creatorLittlewood, P. B.
dc.date2005-03-08
dc.date.accessioned2026-07-07T06:18:00Z
dc.date.available2026-07-07T06:18:00Z
dc.descriptionWe investigate the thermodynamics and signatures of a polariton condensate over a range of densities, using a model of microcavity polaritons with internal structure. We determine a phase diagram for this system including fluctuation corrections to the mean-field theory. At low densities the condensation temperature, T_c, behaves like that for point bosons. At higher densities, when T_c approaches the Rabi splitting, T_c deviates from the form for point bosons, and instead approaches the result of a BCS-like mean-field theory. This crossover occurs at densities much less than the Mott density. We show that current experiments are in a density range where the phase boundary is described by the BCS-like mean-field boundary. We investigate the influence of inhomogeneous broadening and detuning of excitons on the phase diagram.
dc.description20 pages, 6 figures
dc.identifierhttps://arxiv.org/abs/cond-mat/0503184
dc.identifierhttp://arxiv.org/abs/cond-mat/0503184
dc.identifierPhys. Rev. B 72, 115320 (2005)
dc.identifierdoi:10.1103/PhysRevB.72.115320
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/94588
dc.subjectStrongly Correlated Electrons
dc.titleBCS-BEC crossover in a system of microcavity polaritons
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