• Treffer 3 von 5
Zurück zur Trefferliste

Quasi-adiabatic path integral approach for quantum systems under the influence of multiple non-commuting fluctuations

  • Quantum systems are typically subject to various environmental noise sources. Treating these environmental disturbances with a system-bath approach beyond weak coupling, one must refer to numerical methods as, for example, the numerically exact quasi-adiabatic path integral approach. This approach, however, cannot treat baths which couple to the system via operators, which do not commute. We extend the quasi-adiabatic path integral approach by determining the time discrete influence functional for such non-commuting fluctuations and by modifying the propagation scheme accordingly. We test the extended quasi-adiabatic path integral approach by determining the time evolution of a quantum two-level system coupled to two independent baths via non-commuting operators. We show that the convergent results can be obtained and agreement with the analytical weak coupling results is achieved in the respective limits.

Metadaten exportieren

Metadaten
Verfasserangaben:Timo Palm, Peter Nalbach
DOI:https://doi.org/10.1063/1.5051652
ISSN:1089-7690
Titel des übergeordneten Werkes (Englisch):The journal of chemical physics - bridges a gap between journals of physics and journals of chemistry
Dokumentart:Wissenschaftlicher Artikel
Sprache:Englisch
Datum der Veröffentlichung (online):21.12.2018
Jahr der Erstveröffentlichung:2018
Veröffentlichende Institution:Westfälische Hochschule Gelsenkirchen Bocholt Recklinghausen
Datum der Freischaltung:11.01.2019
Jahrgang:149
Ausgabe / Heft:21
Erste Seite:214103
Fachbereiche / Institute:Fachbereiche / Wirtschaft und Informationstechnik Bocholt
Lizenz (Deutsch):License LogoEs gilt das Urheberrechtsgesetz

$Rev: 13159 $