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First, Second, And Quasi-Particle Sound

Philippe Nozières, David Pines

Published Mar 5, 2018• 0 citations

Abstract

We now consider the nature of the excited states of a Bose liquid at finite temperatures. In Chapters 2 and 3 , we have discussed the quasi-particle excitations at finite temperatures. We here wish to concentrate on the nature of the excited states in the long wave-length limit . As in the previous chapters, we shall restrict our attention to states for which the condensate is very nearly uniform.

DOI: 10.1201/9780429495717-14

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