Hopping-Integral Expansion from the Limit of Zero Bandwidth in the Infinite-Dimensional Hubbard-Holstein Model
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概要
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We make a careful perturbation analysis of the electronic self-energy E in terms of the effectiveelectron hopping integral A in the infinite-dirnensional systezn. We apply this formal analysis tothe system in which the attractive interaction between electrons mediated by local optic phononscompetes with the electron-electron short-range repulsion. By summing the most divergent termsin E up to infinite order, we discuss the dynamical localization-delocalization transutron.
- 社団法人日本物理学会の論文
- 1996-09-15
著者
-
Takada Yasutami
Institute For Solid Physics University Of Tokyo
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Hotta Takashi
Institute For Solid State Physics University Of Tokyo
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