Accessing the bath information in open quantum systems with the stochastic c -number Langevin equation method

  title={Accessing the bath information in open quantum systems with the stochastic 
-number Langevin equation method},
  author={Zheng Zhou and Yun-An Yan and Stephen Hughes and J. Q. You and Franco Nori},
  journal={Physical Review A},
In traditional open quantum systems, the baths are usually traced out so that only the system information is left in the equations of motion. However, recent studies reveal that using only the system degrees of freedom can be insufficient. In this work, we develop a stochastic c-number Langevin equation method which can conveniently access the bath information. In our method, the studied quantities are the expectation values of operators which can contain both system operators and bath… 

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