We present an approach for the semiclassical treatment of open quantum systems. An expansion into localized states allows restriction of a simulation to a fraction of the environment that is located within a predefined vicinity of the system. Adding and dropping environmental particles during the simulation yields an effective reduction of the size of the system that is being treated.
@article{arxiv.0803.3883,
title = {Simulation of open quantum systems},
author = {Florian Mintert and Eric J. Heller},
journal= {arXiv preprint arXiv:0803.3883},
year = {2015}
}