NONLOCAL EXCHANGE CONTRIBUTION TO THE FREE-ENERGY OF INHOMOGENEOUS MANY-FERMION SYSTEMS .1. FORMULATION OF THE GRADIENT EXPANSION

Authors
DUNLAP E GELDART DJW
Citation
E. Dunlap et Djw. Geldart, NONLOCAL EXCHANGE CONTRIBUTION TO THE FREE-ENERGY OF INHOMOGENEOUS MANY-FERMION SYSTEMS .1. FORMULATION OF THE GRADIENT EXPANSION, Canadian journal of physics, 72(1-2), 1994, pp. 1-6
Citations number
26
Categorie Soggetti
Physics
Journal title
Canadian journal of physics → ACNP
ISSN journal
00084204
Volume
72
Issue
1-2
Year of publication
1994
Pages
1 - 6
Database
ISI
SICI code
0008-4204(1994)72:1-2<1:NECTTF>2.0.ZU;2-8
Abstract
Nonlocal exchange contributions to the free energy of a weakly inhomog eneous many-fermion system at finite temperature are obtained to first order in the interparticle interaction. Explicit representations are given for the second-order gradient coefficient B(x)(n(r); T). These r esults apply for arbitrary velocity-independent interparticle interact ion and arbitrary temperature.