Phase Invariant Perturbation Scheme in Bose-Einstein Condensed States
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概要
- 論文の詳細を見る
In the Bose-Einstein condensation of a dilute alkaline atomic gas trapped in a magnetic potential, one has to deal with a strongly space- (and time-) dependent order parameter, which violates the phase symmetry. In this case, certain relations are required among propagators and vertices, known as Ward-Takahashi identities. In this paper, we show that a systematic self-consistent perturbation scheme can be developed even with a space-time order parameter in such a way as to satisfy the requirement of phase symmetry. The key procedure is that the information concerning the full order parameter, which is self-consistently determined, is included in the unperturbed Hamiltonian.
- 理論物理学刊行会の論文
- 2002-04-25
著者
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MATSUMOTO Hideki
Institute for Materials Research, Tohoku University
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Matsumoto Hideki
Department Applied Physics Seikei University:(present Address)institute Of Physics University Of Tsu
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Matsumoto Hideki
Department Of Applied Physics Seikei University:(present Address)institute Of Physics Univ. Of Tsuku
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Sakamoto Shoichi
Department Applied Physics Seikei University
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Matsumoto Hideki
Dipartimento Di Fisica Teorica E Sue Metodologie Per Le Scienze Applicate Universita Di Salermo
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MATSUMOTO Hideki
Applied Physics, Seikei University
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MATSUMOTO Hideki
Department of Applied Physics, Seikei University:(Present address)Institute of Physics, Univ. of Tsukuba
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MATSUMOTO Hideki
Department of Applied Physics, Seikei University:(Present address)Institute of Physics,Univ. of Tsukuba
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MATSUMOTO Hideki
Department of Physics, University of Alberta, Edmonton, Alberta
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