Dissipative Dynamics with Trapping in Dimers

Details Dissipative Dynamics with Trapping in Dimers Dissipative Dynamics with Trapping in Dimers

2009-12-29

arxiv.org/abs/0912.5282v1

Phys. Rev. E 81, 041114 (2010)

Physics

Quantum Physics

5 pages, 2 figures

Scientific paper

The trapping of excitations in systems coupled to an environment allows to study the quantum to classical crossover by different means. We show how to combine the phenomenological description by a non-hermitian Liouville-von Neumann Equation (LvNE) approach with the numerically exact path integral Monte-Carlo (PIMC) method, and exemplify our results for a system of two coupled two-level systems. By varying the strength of the coupling to the environment we are able to estimate the parameter range in which the LvNE approach yields satisfactory results. Moreover, by matching the PIMC results with the LvNE calculations we have a powerful tool to extrapolate the numerically exact PIMC method to long times.

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