Geodesic
The ensemble equivalence problem for Bose systems (nonideal Bose gas)
Teoretičeskaâ i matematičeskaâ fizika, Tome 69 (1986) no. 3, pp. 420-438 
V. A. Zagrebnov; V. V. Papoyan. The ensemble equivalence problem for Bose systems (nonideal Bose gas). Teoretičeskaâ i matematičeskaâ fizika, Tome 69 (1986) no. 3, pp. 420-438. http://geodesic.mathdoc.fr/item/TMF_1986_69_3_a9/
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Voir la notice de l'article provenant de la source Math-Net.Ru

The problem of the equivalence of the canonical and grand canonical ensembles for nonideal Bose systems is considered for the example of three exactly solvable models, each of which undergoes a phase transition with the formation of a Bose condensate. It is shown that violation of the statistical (strong) equivalence of the ensembles is not a simple consequence of Bose condensation and equivalence is restored by changing the kind of the phase transition.

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