%0 Journal Article
%T Quantum-field-theoretical techniques for stochastic representation of quantum problems
%A L. I. Plimak
%A M. Fleischhauer
%A M. K. Olsen
%A M. J. Collett
%J Physics
%D 2001
%I arXiv
%X We describe quantum-field-theoretical (QFT) techniques for mapping quantum problems onto c-number stochastic problems. This approach yields results which are identical to phase-space techniques [C.W. Gardiner, {\em Quantum Noise} (1991)] when the latter result in a Fokker-Planck equation for a corresponding pseudo-probability distribution. If phase-space techniques do not result in a Fokker-Planck equation and hence fail to produce a stochastic representation, the QFT techniques nevertheless yield stochastic difference equations in discretised time.
%U http://arxiv.org/abs/cond-mat/0102483v1