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 |
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| Datum: | 2010 |
| 1. Verfasser: | |
| Format: | Artikel |
| Sprache: | English |
| Veröffentlicht: |
Інститут проблем моделювання в енергетиці ім. Г.Є. Пухова НАН України
2010
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| 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| 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
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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.
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| ISSN: | XXXX-0067 |