Variation Principle for Calculation of Many-Particle Effects in Crystals

Variation principle has been developed to calculate many-particle effects in crystals. Within the framework of quasi-particle concept the variation principle has been used to find one-electron states with taking into account of effects due to non-locality of electronic density functional in electrom...

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Bibliographic Details
Main Authors Grushevskaya, Halina V, Gurskii, Leonid I
Format Journal Article
LanguageEnglish
Published 28.01.2006
Subjects
Physics - Quantum Physics
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Summary:Variation principle has been developed to calculate many-particle effects in crystals. Within the framework of quasi-particle concept the variation principle has been used to find one-electron states with taking into account of effects due to non-locality of electronic density functional in electromagnetic fields. A secondary quantized density matrix was used to find the Green function of a quasiparticle and changes of its effective mass due to correlated motion of interacting electrons.
DOI:10.48550/arxiv.quant-ph/0601192