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Asymptotic exactness of c-number substitution in Bogolyubov's theory of superfluidity

The Bogolyubov model of liquid helium is considered. The validity of substituting a c-number for the k=0 mode operator â0 is established rigorously. The domain of stability of the Bogolyubov's Hamiltonian is found. We derive sufficient conditions which ensure the appearance of the Bose condensa...

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Bibliographic Details
Published in:	Condensed Matter Physics
Date:	2010
Main Authors:	Bogolyubov (jr), N.N., Sankovich, D.P.
Format:	Article
Language:	English
Published:	Інститут фізики конденсованих систем НАН України 2010
Online Access:	https://nasplib.isofts.kiev.ua/handle/123456789/32088
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Journal Title:	Digital Library of Periodicals of National Academy of Sciences of Ukraine
Cite this:	Asymptotic exactness of c-number substitution in Bogolyubov's theory of superfluidity / N.N. Bogolyubov, Jr., D.P. Sankovich // Condensed Matter Physics. — 2010. — Т. 13, № 2. — С. 23002: 1-6. — Бібліогр.: 14 назв. — англ.

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Digital Library of Periodicals of National Academy of Sciences of Ukraine

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