Operator ordering and causality
Quantum Physics
2015-05-27 v2 Mathematical Physics
math.MP
Abstract
It is shown that causality violations [M. de Haan, Physica 132A, 375, 397 (1985)], emerging when the conventional definition of the time-normal operator ordering [P.L.Kelley and W.H.Kleiner, Phys.Rev. 136, A316 (1964)] is taken outside the rotating wave approximation, disappear when the amended definition [L.P. and S.S., Annals of Physics, 323, 1989 (2008)] of this ordering is used.
Cite
@article{arxiv.1104.3818,
title = {Operator ordering and causality},
author = {L. I. Plimak and S. T. Stenholm},
journal= {arXiv preprint arXiv:1104.3818},
year = {2015}
}
Comments
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