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 Problems of Atomic Science and Technology, 2012, Issue 1, Pages 245–247 (Mi vant1)

Advanced Bogolyubov model of imperfect Bose gas and superfluidity

N. N. Bogolyubov (Jr.), D. P. Sankovich

V.A. Steklov Mathematical Institute of RAS, Moscow, Russia

Abstract: The equilibrium properties of a system of interacting bosons are studied from a microscopic point of view. We calculate the superfluid density in the Bogolyubov model of imperfect Bose gas. The model superstable Hamiltonian is considered. We examine the case of some pair potential and find the estimate for temperature and density in the $\lambda$-point.

Bibliographic databases:
PACS: 05.30.Jp, 03.75.Fi, 67.40.-w