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Author Dang, G. D. ♦ Klein, A.
Source United States Department of Energy Office of Scientific and Technical Information
Content type Text
Language English
Subject Keyword PHYSICS ♦ ELECTRONS ♦ EQUATIONS ♦ FREQUENCY ♦ MANY BODY PROBLEM ♦ MATHEMATICS ♦ MOTION ♦ OPERATORS ♦ OSCILLATIONS ♦ SPECTRA
Abstract Using the example of the degenerate electron gas, it is shown how the operator equations of motion for a manyparticle system may be exploited to generate systematically a sequence of nonperturbative approximations of which some version of the random phase approximation is the first. Some questions left unsettled by previous attempts in this direction are resolved by close attention to the structure of the spectrum of the system. The solution of the equations is carried only so far as to make contact with previously substantiated results. Finally, a rigorous proof is given that the plasmon frequency approaches the classical plasmon frequency in the longwavelength limit. (auth)
ISSN 0031899X
Educational Use Research
Learning Resource Type Article
Publisher Date 1963-06-15
Publisher Department Univ. of Pennsylvania, Philadelphia
Journal Physical Review
Volume Number 130
Organization Univ. of Pennsylvania, Philadelphia


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