Collisional decoherence reexamined
量子物理
2009-11-10 v2
摘要
We re-derive the quantum master equation for the decoherence of a massive Brownian particle due to collisions with the lighter particles from a thermal environment. Our careful treatment avoids the occurrence of squares of Dirac delta functions. It leads to a decoherence rate which is smaller by a factor of 2 pi compared to previous findings. This result, which is in agreement with recent experiments, is confirmed by both a physical analysis of the problem and by a perturbative calculation in the weak coupling limit.
引用
@article{arxiv.quant-ph/0303094,
title = {Collisional decoherence reexamined},
author = {Klaus Hornberger and John E. Sipe},
journal= {arXiv preprint arXiv:quant-ph/0303094},
year = {2009}
}
备注
33 pages, 4 figures