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- Matsuura Tamifusa
- Department of Physics, Nagoya University, Furo–cho, Chikusa–ku, Nagoya 464–01
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- Tsuruta Atsushi
- Department of Physics, Nagoya University, Furo–cho, Chikusa–ku, Nagoya 464–01
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- Ono Yoshiaki
- Department of Physics, Nagoya University, Furo–cho, Chikusa–ku, Nagoya 464–01
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- Kuroda Yoshihiro
- Department of Physics, Nagoya University, Furo–cho, Chikusa–ku, Nagoya 464–01
書誌事項
- タイトル別名
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- Infrared Divergence in Pseudo Particle
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抄録
Infrared divergence in the pseudo-particle spectra of the degenerate impurity Anderson model described in terms of the auxiliary particles is examined rigorously with use of the expansion from the large limit of the spin-orbital degeneracy N. The results of analysis with the most divergent terms in the expansion confirm the exponents of the spectra of the slave boson and the pseudo-fermion to be given respectively by 1-nf2/N and (2n_f-nf2)/N where n_f is the average number of localized electrons at the impurity site, rather than by N/(N+1) and 1/(N+1) as suggested by the results of so-called non-crossing approximation (NCA) studies. In determination of the correct exponents, contributions from the crossing diagrams are crucial. It is also confirmed that all of the infrared divergences in the single particle spectra are cancelled out by the corresponding vertex corrections to leave only non-divergent terms in the scattering rate of the conduction electrons.
収録刊行物
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- Journal of the Physical Society of Japan
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Journal of the Physical Society of Japan 66 (5), 1245-1248, 1997
一般社団法人 日本物理学会
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詳細情報 詳細情報について
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- CRID
- 1390001204182151296
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- NII論文ID
- 210000100067
- 110001970390
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- NII書誌ID
- AA00704814
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- BIBCODE
- 1997JPSJ...66.1245M
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- ISSN
- 13474073
- 00319015
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- NDL書誌ID
- 4219787
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- 本文言語コード
- en
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- データソース種別
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- JaLC
- NDL
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- CiNii Articles
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- 抄録ライセンスフラグ
- 使用不可