Generalization of the Lindhard dielectric function to include fluctuation effects

Document Type

Article

Publication Date

1-1-1989

Abstract

The random-phase-approximation dielectric function for the homogeneous electron gas has been derived by Lindhard. Here, we generalize this work to include fluctuation effects, and we also study their influence on the Friedel oscillations. In particular, our generalized function is analytic for all wave vectors and frequencies, in contrast to the Lindhard function. © 1989 The American Physical Society.

Publication Source (Journal or Book title)

Physical Review B

First Page

3600

Last Page

3604

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