Bogolyubov's theory of superfluidity
作者： D. P. Sankovich
DOI: 10.1134/S1063779610070191
关键词: Quantum mechanics 、 Interpretation (model theory) 、 Gapless playback 、 Liquid helium 、 Physics 、 Superfluidity 、 Quantum electrodynamics 、 Spectrum (functional analysis) 、 Bose–Einstein condensate
摘要: The Bogolyubov model of liquid helium is considered. We derive sufficient conditions which ensure an appearance the Bose condensate in model. For some temperatures and positive values chemical potential there gapless spectrum elementary excitations, leading to proper microscopic interpretation superfluidity.
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