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SOME NUMERICAL RESULTS ON QUASIPARTICLE PROPERTIES IN ELECTRON GAS

被引：172
作者：
LUNDQVIST, BI
机构：
[1] Institute of Theoretical Physics, Chalmers University of Technology, Göteborg
来源：
PHYSICA STATUS SOLIDI | 1969年 / 32卷 / 01期
关键词：
D O I：
10.1002/pssb.19690320130
中图分类号：
O469 [凝聚态物理学];
学科分类号：
070205 ;
摘要：
Numerical results for some quasiparticle properties of an interacting electron gas are presented. New data are given for highly excited electrons. It is shown that there is a characteristic momentum dependence in the energy, damping rate, and spectral weight of the quasiparticle. The results are calculated using a self‐energy expression to the lowest order in the effective (RPA) interaction between the electrons. Well‐defined peaks in the spectrum are obtained for all momenta, and in this sense it is concluded that the quasiparticles have a physical meaning everywhere in momentum space. Copyright © 1969 WILEY‐VCH Verlag GmbH & Co. KGaA, Weinheim
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页码：273 / +
页数：1
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