Exactly soluble model with two kinds of Bose–Einstein condensations

J.-B. Bru and V.A. Zagrebnov

Physica A: Statistical Mechanics and its Applications, 1999, vol. 268, issue 3, 309-325

Abstract: We present a simple exactly soluble model which manifests two kinds of Bose–Einstein condensations. They occur in two stages: for intermediate densities (negative chemical potentials μ0<μ<0) one has a non-conventional Bose condensation in the mode k=0 due to a diagonal perturbation of the perfect Bose-gas (PBG), whereas for μ=0 and large densities ρ>ρc0(θ) one gets a conventional (generalized) Bose-condensation corresponding to the standard mechanism of saturation.

Keywords: Conventional/non-conventional Bose-condensations; Generalized (non-extensive) Bose condensation; Weakly imperfect Bose gas (search for similar items in EconPapers)
Date: 1999
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Persistent link: https://EconPapers.repec.org/RePEc:eee:phsmap:v:268:y:1999:i:3:p:309-325

DOI: 10.1016/S0378-4371(99)00023-0

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