Status: Bibliographieeintrag
Standort: ---
Exemplare:
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| Online-Ressource |
Verfasst von: | Gasenzer, Thomas [VerfasserIn]  |
| Keßler, Stefan [VerfasserIn]  |
| Pawlowski, Jan M. [VerfasserIn]  |
Titel: | Far-from-equilibrium quantum many-body dynamics |
Verf.angabe: | Thomas Gasenzer, Stefan Keßler, and Jan M. Pawlowski |
Fussnoten: | Gesehen am 01.12.2017 |
Titel Quelle: | Enthalten in: De.arxiv.org |
Jahr Quelle: | 2010 |
Band/Heft Quelle: | (2010) Artikel-Nummer 1003.4163, 20 Seiten |
Abstract: | The theory of real-time quantum many-body dynamics as put forward in Ref. [arXiv:0710.4627] is evaluated in detail. The formulation is based on a generating functional of correlation functions where the Keldysh contour is closed at a given time. Extending the Keldysh contour from this time to a later time leads to a dynamic flow of the generating functional. This flow describes the dynamics of the system and has an explicit causal structure. In the present work it is evaluated within a vertex expansion of the effective action leading to time evolution equations for Green functions. These equations are applicable for strongly interacting systems as well as for studying the late-time behaviour of nonequilibrium time evolution. For the specific case of a bosonic N-component phi^4 theory with contact interactions an s-channel truncation is identified to yield equations identical to those derived from the 2PI effective action in next-to-leading order of a 1/N expansion. The presented approach allows to directly obtain non-perturbative dynamic equations beyond the widely used 2PI approximations. |
URL: | Bitte beachten Sie: Dies ist ein Bibliographieeintrag. Ein Volltextzugriff für Mitglieder der Universität besteht hier nur, falls für die entsprechende Zeitschrift/den entsprechenden Sammelband ein Abonnement besteht oder es sich um einen OpenAccess-Titel handelt.
Kostenfrei: Verlag: http://arxiv.org/abs/1003.4163 |
Datenträger: | Online-Ressource |
Sprache: | eng |
K10plus-PPN: | 1565933001 |
Verknüpfungen: | → Sammelwerk |
Far-from-equilibrium quantum many-body dynamics / Gasenzer, Thomas [VerfasserIn] (Online-Ressource)
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