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Bogolyubov approximation for diagonal model of an interacting Bose gas | | M.Corgini
; D.P.Sankovich
; | | Date: |
11 Jan 2007 | | Subject: | Statistical Mechanics | | Abstract: | We study, using the Bogolyubov approximation, the thermodynamic behaviour of a superstable Bose system whose energy operator in the second-quantized form contains a nonlinear expression in the occupation numbers operators. We prove that for all values of the chemical potential satisfying $mu > lambda(0)$, where $lambda (0)leq 0$ is the lowest energy value, the system undergoes Bose--Einstein condensation. | | Source: | arXiv, cond-mat/0701236 | | Services: | Forum | Review | PDF | Favorites | |
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