6533b88afe1ef96bd12e1d87
RESEARCH PRODUCT
Transient Dynamics of a Driven Quantum Bistable System
Magazzu', LucaValenti, DavideSpagnolo, BernardoFalci, G.subject
Quantum systems with finite Hilbert spaceFluctuation phenomena random processes noise and Brownian motionquantum statistical methodDecoherenceopen systemSettore FIS/03 - Fisica Della Materiadescription
We study the transient dynamics and the asymptotic behaviour of a multilevel system in the strong dissipation regime. The system is modeled as a periodically driven quantum particle in an asymmetric double well potential, interacting with the bosonic heat bath of the Caldeira-Leggett model. The analytical approach used is non- perturbative in the particle-bath coupling and is based on a space-discretized path integral expression for the particle’s reduced density matrix. By a suitable approximation on the Feynman-Vernon influence functional a Markov-approximated master equation is obtained for the populations in the Discrete Variable Representation (DVR).
| year | journal | country | edition | language |
|---|---|---|---|---|
| 2013-01-01 |