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arXiv · 1504.07228

Thermofield-based chain mapping approach for open quantum systems

Ines de Vega·Mari-Carmen Bañuls
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Abstract

We consider a thermofield approach to analyze the evolution of an open quantum system coupled to an environment at finite temperature. In this approach, the finite temperature environment is exactly mapped onto two virtual environments at zero temperature. These two environments are then unitarily transformed into two different chains of oscillators, leading to a one dimensional structure that can be numerically studied using tensor network techniques.

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Ines de Vega, Mari-Carmen Bañuls. 2015-04-27. Thermofield-based chain mapping approach for open quantum systems. https://doi.org/10.1103/physreva.92.052116

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