Critical Analysis of the Bogoliubov Theory of Superfluidity

Adams, Stefan and Bru, J.-B. (2002) Critical Analysis of the Bogoliubov Theory of Superfluidity. (Preprint)

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Abstract

The microscopic theory of superfluidity [1—3] was proposed by Bogoliubov in 1947 to explain the Landau-type excitation spectrum of He-4. An analysis of the Bogoliubov theory has already been performed in the recent review [4]. Here we add some new critical analyses of this theory. This leads us to consider the superstable Bogoliubov model [5]. It gives rise to an improvement of the previous theory which will be explained with more details in a next paper [6]: coexistence in the superfluid liquid of particles inside and outside the Bose condensate (even at zero temperature), Bose/Bogoliubov statistics, “Cooper pairs” in the Bose condensate, Landau-type excitation spectrum...

Item Type: Article
Uncontrolled Keywords: Bogoliubov, helium, superfluidity, Landau, excitation, spectrum, Cooper, Bose condensation
Divisions: School of Theoretical Physics > Preprints
Date Deposited: 19 Jun 2018 13:56
Last Modified: 17 Jul 2018 10:11
URI: http://dair.dias.ie/id/eprint/614

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