The non-Markovian stochastic Schrodinger equation for open systems

Details The non-Markovian stochastic Schrodinger equation for open systems The non-Markovian stochastic Schrodinger equation for open systems

1997-06-22

arxiv.org/abs/quant-ph/9706050v1

Physics

Quantum Physics

9 pages, RevTeX

Scientific paper

10.1016/S0375-9601(97)00717-2

We present the non-Markovian generalization of the widely used stochastic Schrodinger equation. Our result allows to describe open quantum systems in terms of stochastic state vectors rather than density operators, without approximation. Moreover, it unifies two recent independent attempts towards a stochastic description of non-Markovian open systems, based on path integrals on the one hand and coherent states on the other. The latter approach utilizes the analytical properties of coherent states and enables a microscopic interpretation of the stochastic states. The alternative first approach is based on the general description of open systems using path integrals as originated by Feynman and Vernon.

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