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Exact exchange kernel for time-dependent density-functional theory

✍ Scribed by Andreas Görling

Publisher
John Wiley and Sons
Year
1998
Tongue
English
Weight
204 KB
Volume
69
Category
Article
ISSN
0020-7608

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✦ Synopsis

An exact expression for the exchange kernel of time-dependent densityfunctional theory, the frequency-dependent functional derivative of the exchange potential with respect to the density, is derived. The expression is simple enough to be applied in practice. A simple and transparent derivation of the coupled Kohn᎐Sham equation of time-dependent density-functional theory is given. Modified coupled Kohn᎐Sham equations are presented that are especially well suited for an ''exact-exchange'' treatment of excitation energies, polarizabilities, and other linear response properties.

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