Equation for the potential of an electron system with slowly varying density in the energy-functional formalism

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URI: http://hdl.handle.net/10902/1782
ISSN: 0556-2791
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Autoría
Santos Corchero, Emilio; Leal Villalva, Matilde
Fecha
1983-07
Derechos
© 1983 The American Physical Society
Publicado en
Physical Review. A, General Physics, vol. 28, iss. 1, p. 459-461, (1983)
Editorial
American Physical Society
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Resumen/Abstract
A second-order differential equation is derived for the electric potential of an electron system with slowly varying density. It includes consistently the first-gradient corrections to both the kinetic energy and the exchange energy. In the regime of high density, the equation reduces to the one derived by Schwinger Phys. Rev. A 24 2353 (1981)
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