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Interacting excitations in a Bose fluid

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Zeitschrift für Physik B Condensed Matter

Abstract

Within the Bogoliubov-Zubarev formalism we develop a graphical perturbation theory of a Bose fluid for finite temperatures. We derive the quasiparticle lifetime and a Boltzmann equation for excitations, restricting ourselves to lowest order perturbation theory. All results are expressed in terms of the parameterλ 2, occuring in the Bogoliubov-Zubarev formalism, which in lowest order is equal to the liquid structure factor at zero temperature.

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Authors and Affiliations

  1. Institut für Theoretische Physik, Universität Göttingen, Bunsenstraße 9, D-3400, Göttingen, Federal Republic of Germany

    Hans-Jürgen Sommers

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  1. Hans-Jürgen Sommers
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Sommers, HJ. Interacting excitations in a Bose fluid. Z Physik B 26, 299–305 (1977). https://doi.org/10.1007/BF01570739

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  • DOI: https://doi.org/10.1007/BF01570739

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