Thermal Properties of the Inhomogeneous Electron Gas
- 1 March 1965
- journal article
- research article
- Published by American Physical Society (APS) in Physical Review B
- Vol. 137 (5A), A1441-A1443
- https://doi.org/10.1103/physrev.137.a1441
Abstract
A variational property of the ground-state energy of an electron gas in an external potential , derived by Hohenberg and Kohn, is extended to nonzero temperatures. It is first shown that in the grand canonical ensemble at a given temperature and chemical potential, no two lead to the same equilibrium density. This fact enables one to define a functional of the density independent of , such that the quantity is at a minimum and equal to the grand potential when is the equilibrium density in the grand ensemble in the presence of .
Keywords
This publication has 1 reference indexed in Scilit:
- Inhomogeneous Electron GasPhysical Review B, 1964