The Bogoliubov c-Number Approximation for Random Boson SystemsReport as inadecuate




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1 I2M - Institut de Mathématiques de Marseille

Abstract : We justify the Bogoliubov c-number approximation for the case of interacting Bose-gas in a homogeneous random media. To this aim we take into account occurrence of generalised extended-fragmented Bose-Einstein condensation in an infinitesimal band of low kinetic-energy modes, to generalise the c-number substitution procedure for this band of low-momenta modes.

Keywords : Bogoliubov Quasi-Averages c-number Approximation Generalized Bose-Einstein Condensation Random Potentials Bogoliubov Berezin-Lieb Inequality





Author: Valentin Zagrebnov -

Source: https://hal.archives-ouvertes.fr/



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