Phonon Spectrum of a Degenerate System of Bosons at Finite Temperature
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概要
- 論文の詳細を見る
A new set of quasi-particle operators are introduced into the theory of a degenerate system of bosons in which the depletion of the condensate is appreciable. These operators are related by a nonlinear canonical transformation to the density fluctuation operators and their canonical conjugates. The quasi-particles have a temperature dependent phonon spectrum. They incorporate the interaction between bosons with non-zero momenta. In the limit as the density of the condensate approaches zero, the proposed theory is reduced to the Hartree-Fock theory for a nondegenerate system.
- 理論物理学刊行会の論文
- 1984-05-25
著者
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Yamasaki Shuichiro
College Of Bio-medical Technology Osaka University
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YAMASAKI Shuichiro
Department of Physicsm, Osaka University
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YAMASAKI Shuichiro
Department of Physics, College of General Education Osaka University:College of Bio-medical Technology, Osaka University
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YAMASAKI Shuichiro
Department of Physics, College of General Education, Osaka University
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