Issue
EPL
Volume 86, Number 5, June 2009
Article Number 50006
Number of page(s) 6
Section General
DOI http://dx.doi.org/10.1209/0295-5075/86/50006
Published online 24 June 2009
EPL, 86 (2009) 50006
DOI: 10.1209/0295-5075/86/50006

Simulation of open quantum systems

F. Mintert1, 2 and E. J. Heller2

1   Physikalisches Institut, Albert-Ludwigs Universität Freiburg - Hermann-Herder-Str. 3, Freiburg, Germany, EU
2   Department of Physics, Harvard University - 17 Oxford Street, Cambridge, MA, USA


received 5 December 2008; accepted in final form 15 May 2009; published June 2009
published online 24 June 2009

Abstract
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.

PACS
02.70.Ss - Quantum Monte Carlo methods.
03.65.Sq - Semiclassical theories and applications.
03.65.Yz - Decoherence; open systems; quantum statistical methods.

© EPLA 2009