Exchange-Correlation Effects on the Higher-Order Polarizations of an Elctron Gas
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概要
- 論文の詳細を見る
Exchange-correlation effects on the higher-order polarizations are studied up to first order in the screened Coulomb interaction for the purpose of examining Brovman and Kagan's effective vertex approximation. For the three-point polarization II_3(p_1,p_2), their approximation is shown to be valid for large values of momenta q_1 and q_2 by using the computed result in the Thomas-Fermi screening approximation, where the validity region is limited by the point of Lloyd and Sholl's singularity. The asymptotic analysis for the large momentum values proves to be relevant to the case of the three-point polarization and is applied to the four-point one. A new approximate formula is presented for the four-point polarization.
- 理論物理学刊行会の論文
- 1982-09-25
著者
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Miyagi Hiroshi
Department Of Material Physics Faculty Of Engineering Science Osaka University
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Ebina Kuniyoshi
Department Of Material Physics Faculty Of Engineering Science Osaka University
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Nagara Hitose
Department Of Material Physics Faculty Of Engineering Science Osaka University
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Nagara Hitose
Department Of Material Physics Faculty Of Engineering Science Osaka Universitiy
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Miyagi Hiroshi
Department Of Material Physics Faculty Of Engineering Science Osaka Universitiy
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NAGARA Hitose
Department of Material Physics, Faculty of Engineering Science Osaka University
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Miyagi Hiroshi
Department of Material Physics,Faculty of Engineering Science,Osaka University
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