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, Jan M. Pawlowski |
Umfang: | 2 S. |
Fussnoten: | Gesehen am 01.12.2017 |
Titel Quelle: | Enthalten in: The European physical journal / C |
Jahr Quelle: | 2010 |
Band/Heft Quelle: | 70(2010), 1-2, S. 423-443 |
ISSN Quelle: | 1434-6052 |
Abstract: | A theory of real-time quantum many-body dynamics is evaluated in detail. It is based on a generating functional of correlation functions where the closed time contour extends only to a given time. Expanding the 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 behavior of non-equilibrium time evolution. For the specific case of a bosonic NN\mathcal{N}-component φ4-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/N1/N1/\mathcal{N} expansion. The presented approach allows to directlyobtain non-perturbative dynamic equations beyond the widely used 2PI approximations. |
DOI: | doi:10.1140/epjc/s10052-010-1430-3 |
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://dx.doi.org/10.1140/epjc/s10052-010-1430-3 |
| Kostenfrei: Verlag: https://link.springer.com/article/10.1140/epjc/s10052-010-1430-3 |
| DOI: https://doi.org/10.1140/epjc/s10052-010-1430-3 |
Datenträger: | Online-Ressource |
Sprache: | eng |
K10plus-PPN: | 1565932641 |
Verknüpfungen: | → Zeitschrift |
Far-from-equilibrium quantum many-body dynamics / Gasenzer, Thomas [VerfasserIn] (Online-Ressource)
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