Quantum-field-theoretical techniques for stochastic representation of quantum problems
统计力学
2007-05-23 v1
摘要
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.
引用
@article{arxiv.cond-mat/0102483,
title = {Quantum-field-theoretical techniques for stochastic representation of quantum problems},
author = {L. I. Plimak and M. Fleischhauer and M. K. Olsen and M. J. Collett},
journal= {arXiv preprint arXiv:cond-mat/0102483},
year = {2007}
}