Path-integral analysis of the exchange-correlation energy and potential in density-functional theory: Unpolarized systems

被引：9

作者：

Valiev, M

Fernando, GW

机构：

[1] Physics Department, University of Connecticut, Storrs

来源：

PHYSICAL REVIEW B | 1996年 / 54卷 / 11期

关键词：

D O I：

10.1103/PhysRevB.54.7765

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

The present work is a demonstration of how the exchange and correlation in density-functional theory can be studied using path-integral techniques. Compact and formally exact expressions for the exchange correlation functional and potential are derived in terms of the functional integrals. The local density approximation is obtained in the limit of slowly varying density. A perturbative analysis of the exchange-correlation energy and potential via the semiclassical expansion of the effective action is presented.

引用

页码：7765 / 7770

页数：6

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