| Thème(s) : |
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Physique/Physique Quantique
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| Titre : |
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Exact stochastic simulation of dissipation and non-Markovian effects in open quantum systems |
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| Auteur : |
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D. Lacroix1 |
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| Laboratoire : |
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| Résumé : |
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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. |
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| Type de publication : |
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Articles dans des revues avec comité de lecture |
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Date de publication
ou d'écriture : |
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2008 |
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| Nom du périodique : |
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| Physical Review E (Phys Rev E Stat Nonlin Soft Matter Phys) |
| Publisher |
American Physical Society |
| ISSN |
1539-3755 |
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| Volume : |
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77 |
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| Page/Article : |
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041126 |
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| Identifiant local : |
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GANIL P 08 05 |
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