Infrared Divergence in Pseudo-Particle Spectra
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概要
- 論文の詳細を見る
Infrared divergence in the pseudo-particle spectra of the degenerate impurity Anderson modeldescribed in terms of the auxiliary particles is exanained rigorously with ruse of the expansion fromthe large limit of the spin-orbital degeneracy ./V. The results of analysis with the most divergentterrns in the expansion confirrn the exponents of' the spectra of the slave boson and the pseudo-ferrnion to be given respectively by 1 - nj / N and (2n j - n') ) / N where n j is the average numberof localized electrons at the impurity site, rather than by N / (!V -l- l ) and 1 / (V -l- 11 ) as suggestedby the restults of so-called non-crossing approximation (NCA) studies. In determination of thecorrect exponents, contributions from the crossing diagrarns are crucial. It is also confirmed thatall of the infrared divergences in the single particle spectra are cancelled out by the correspondingvertex corrections to leave only ton-divergent terms in the scattering rate of the conductionelectrons.
- 社団法人日本物理学会の論文
- 1997-05-15
著者
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Kuroda Yoshihiro
Department of Pharmaceutical Health Care, Faculty of Pharmaceutical Sciences, Himeji Dokkyo Universi
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ONO Yoshiaki
Department of Physics,Nagoya University
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MATSUURA Tamifusa
Department of Physics,Nagoya University
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Tamifusa Matsuura
Department Of Physics Nagoya University
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Matsuura Tamifusa
Department Of Physics Nagoya University
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TSURUTA Atsushi
Department of Physics, Nagoya University
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Tsuruta A
Department Of Physics Nagoya University
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Tsuruta Atsushi
Department Of Materials Engineering Science Graduate School Of Engineering Science Osaka University
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Kosuge Yu
Department Of Physics Nagoya University
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Kuroda Yoshihiro
Department Of Pharmaceutical Health Care Faculty Of Pharmaceutical Sciences Himeji Dokkyo University
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Yoshiaki Ono
Department Of Physics Nagoya University
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Ono Yoshiaki
Department Of Geriatric Dentistry Osaka Dental University
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KURODA Yoshihiro
Physics Department, Nagoya University
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MATSUURA Tamifusa
Physics Department, Nagoya University
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MATSUURA Tamifusa
Department of Physics, Nagaya University
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