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Dynamics of Open Bosonic Quantum Systems in Coherent State Representation

D. A. R. Dalvit·G. P. Berman·M. Vishik
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Abstract

We consider the problem of decoherence and relaxation of open bosonic quantum systems from a perspective alternative to the standard master equation or quantum trajectories approaches. Our method is based on the dynamics of expectation values of observables evaluated in a coherent state representation. We examine a model of a quantum nonlinear oscillator with a density-density interaction with a collection of environmental oscillators at finite temperature. We derive the exact solution for dynamics of observables and demonstrate a consistent perturbation approach.

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D. A. R. Dalvit, G. P. Berman, M. Vishik. 2006-01-10. Dynamics of Open Bosonic Quantum Systems in Coherent State Representation. https://doi.org/10.1103/physreva.73.013803

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