s'authentifier
version française rss feed
HAL : in2p3-00256291, version 1

Fiche concise  Récupérer au format
Exact stochastic simulation of dissipation and non-Markovian effects in open quantum systems
Lacroix D.
Physical Review E 77 (2008) 041126 - http://hal.in2p3.fr/in2p3-00256291
Physique/Physique Quantique
Exact stochastic simulation of dissipation and non-Markovian effects in open quantum systems
D. Lacroix1
1 :  GANIL - Grand Accélérateur National d'Ions Lourds
http://www.ganil-spiral2.eu
CNRS : UPR3266 – IN2P3 – CEA : DSM/GANIL
Bvd Henri Becquerel - BP 55027 - 14076 CAEN CEDEX 5
France
The exact dynamics of a system coupled to an environment can be described by an integro-differential stochastic equation on its reduced density. The environment influence is incorporated through a mean-field which is both stochastic and non-local in time and where the standard two-times correlation functions of the environment appear naturally. Since no approximation is made, the presented theory incorporate exactly dissipative and non-Markovian effects. Applications to the spin-boson model coupled to a heat-bath either in the weak and strong coupling limit show that the presented stochastic theory can be a valuable tool to simulate exactly the dynamics of open quantum systems. Links with Stochastic Schroedinger Equations method and possible extensions to "imaginary time" propagation are discussed.

Articles dans des revues avec comité de lecture
2008
Physical Review E (Phys Rev E Stat Nonlin Soft Matter Phys)
Publisher American Physical Society
ISSN 1539-3755 
77
041126

GANIL P 08 05
Lien vers le texte intégral : 
http://fr.arXiv.org/abs/0802.1981