Quantum-field-theoretical techniques for stochastic representation of quantum problems
Quantum-field-theoretical techniques for stochastic representation of quantum problems
复制标题
用于量子问题随机表示的量子场理论技术
DOI:
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发表时间:
2001
期刊:
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通讯作者:
M. Collett
中科院分区:
文献类型:
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作者:
L. Plimak;M. Fleischhauer;M. Olsen;M. Collett
Abstract: 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, 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 di erence equations in discretised time.