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arXiv · 1104.3671

Complex Time Evolution of Open Quantum Systems

C. N. Gagatsos·A. I. Karanikas·G. I. Kordas
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Abstract

We combine, in a single set-up,the complex time parametrization in path integration, and the closed time formalism of non-equilibrium field theories to produce a compact representation of the time evolution of the reduced density matrix. In this framework we introduce a cluster-type expansion that facilitates perturbative and non-perturbative calculations in the realm of open quantum systems. The technical details of some very simple examples are discussed.

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C. N. Gagatsos, A. I. Karanikas, G. I. Kordas. 2011-04-19. Complex Time Evolution of Open Quantum Systems. https://arxiv.org/abs/1104.3671

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