Magazzu, Luca and Valenti, Davide and Spagnolo, Bernardo and Grifoni, Milena (2015) Dissipative dynamics in a quantum bistable system: Crossover from weak to strong damping. PHYSICAL REVIEW E, 92 (3): 032123. ISSN 1539-3755, 1550-2376
Full text not available from this repository. (Request a copy)Abstract
The dissipative dynamics of a quantum bistable system coupled to a Ohmic heat bath is investigated beyond the spin-boson approximation. Within the path-integral approach to quantum dissipation, we propose an approximation scheme which exploits the separation of time scales between intra- and interwell (tunneling) dynamics. The resulting generalized master equation for the populations in a space localized basis enables us to investigate a wide range of temperatures and system-environment coupling strengths. A phase diagram in the coupling-temperature space is provided to give a comprehensive account of the different dynamical regimes.
| Item Type: | Article |
|---|---|
| Uncontrolled Keywords: | STRONG-COUPLING THEORY; SUPERCONDUCTING CIRCUITS; VIBRATIONAL-RELAXATION; INTEGRAL APPROACH; COHERENT STATES; PROTON-TRANSFER; 4-LEVEL SYSTEM; REPRESENTATION; SUPERPOSITION; INFORMATION; |
| Subjects: | 500 Science > 530 Physics |
| Divisions: | Physics > Institute of Theroretical Physics > Chair Professor Grifoni > Group Milena Grifoni |
| Depositing User: | Dr. Gernot Deinzer |
| Date Deposited: | 07 Jun 2019 08:32 |
| Last Modified: | 07 Jun 2019 08:32 |
| URI: | https://pred.uni-regensburg.de/id/eprint/4824 |
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