Original scientific paper

Correlation effects in a degenerate electron gas

V. Šips ; lnstitut "Ruđer Bošković", Zagreb
M. Vrtar ; lnstitut "Ruđer Bošković", Zagreb

Abstract

A modiffied version of the Bohm-Pines approach is obtained by transforming longitudinal long-wavelength phonons into plasmons. Taking into account the exchange processes, the electron-plasmon Hamiltonian is derived in which the electron correlation is included. The exchange and correlation contribution to the plasma frequency depends upon the influence of the crystal periodicity on the effective short-range electron-electron interaction. Full agreement with the Bohm-Pines theory is obtained if periodicity effects are completely disregarded.

Keywords

electron correlation

Hrčak ID:

321501

URI

https://hrcak.srce.hr/321501

Publication date:

26.8.1971.

Article data in other languages: croatian

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