The Keldysh formalism in the time-dependent density-functional theory

We have considered application the Keldysh formalism in time-dependent density functional theory. It is shown that effects of electron-electron interaction can be taken systematically into account in the framework of the Kadanoff-Baym equations for Green functions determined on the Keldysh contou...

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Veröffentlicht in:Збірник наукових праць Інституту проблем моделювання в енергетиці ім. Г.Є. Пухова НАН України
Datum:2010
1. Verfasser: Korostilv, A.
Format: Artikel
Sprache:English
Veröffentlicht: Інститут проблем моделювання в енергетиці ім. Г.Є. Пухова НАН України 2010
Online Zugang:https://nasplib.isofts.kiev.ua/handle/123456789/27370
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Назва журналу:Digital Library of Periodicals of National Academy of Sciences of Ukraine
Zitieren:THThe Keldysh formalism in the time-dependent density-functional theory / A. Korostilv // Збірник наукових праць Інституту проблем моделювання в енергетиці ім. Г.Є. Пухова НАН України. — К.: ІПМЕ ім. Г.Є. Пухова НАН України, 2010. — Вип. 56. — С. 46-57. — Бібліогр.: 6 назв. — англ.

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Digital Library of Periodicals of National Academy of Sciences of Ukraine
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Zusammenfassung:We have considered application the Keldysh formalism in time-dependent density functional theory. It is shown that effects of electron-electron interaction can be taken systematically into account in the framework of the Kadanoff-Baym equations for Green functions determined on the Keldysh contour for the second-order 47 self-energy approximation. With the help of these Green functions we have derived the time-dependent Kohn-Sham potential from an action functional. The Keldysh formalism in a similar way leads to response functions that obey the causality principle that is illustrated on the case of the time-dependent optimized effective potential equations.
ISSN:XXXX-0067