A Microscopic Theory of Superfluids. I : Quasi-Particles and the Extended Bogoliubov Transformation : Condensed Matter and Statistical Physics
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概要
- 論文の詳細を見る
Creation and annihilation operators of quasi-particles are introduced into the description of a finite temperature system of degenerate bosons with the aid of a canonical transformation which generalizes the one due to Bogoliubov. A variational calculation taking into account the interaction between non-zero momentum particles shows that the quasi-particles are phonons in the long wave-length limit. The state of the system, which is approximated by the grand canonical ensemble of the quasi-particles, approaches the Hartree-Fock state when the condensate is depleted completely at the critical temperature.
- 理論物理学刊行会の論文
- 1984-09-25
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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