- 03-286 S. ADAMS and J.-B. BRU
- Critical Analysis of the Bogoliubov Theory of Superfluidity
Jun 18, 03
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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 helium 4.
An analysis of the Bogoliubov theory has already been performed
in the recent review . Here we add some new critical analyses
of this theory. This leads us to consider the superstable
Bogoliubov model . It gives rise to an
improvement of the previous theory which will be explained with more details in a next paper : 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...