Description of non-Markovian effect in open quantum system with the discretized environment method

@article{Lacroix2015DescriptionON,
  title={Description of non-Markovian effect in open quantum system with the discretized environment method},
  author={Denis Lacroix and V. V. Sargsyan and G. G. Adamian and N. V. Antonenko},
  journal={The European Physical Journal B},
  year={2015},
  volume={88},
  pages={1-8}
}
An approach, called discretized environment method, is used to treat exactly non-Markovian effects in open quantum systems. In this approach, a complex environment described by a spectral function is mapped into a finite set of discretized states with an appropriate coupling to the system of interest. The finite set of system plus environment degrees of freedom are then explicitly followed in time leading to a quasi-exact description. The present approach is anticipated to be particularly… 
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