Decoherence of Histories and Hydrodynamic Equations for a Linear Oscillator Chain
量子物理
2009-11-10 v1
摘要
We investigate the decoherence of histories of local densities for linear oscillators models. It is shown that histories of local number, momentum and energy density are approximately decoherent, when coarse-grained over sufficiently large volumes. Decoherence arises directly from the proximity of these variables to exactly conserved quantities (which are exactly decoherent), and not from environmentally-induced decoherence. We discuss the approach to local equilibrium and the subsequent emergence of hydrodynamic equations for the local densities.
引用
@article{arxiv.quant-ph/0305084,
title = {Decoherence of Histories and Hydrodynamic Equations for a Linear Oscillator Chain},
author = {J. J. Halliwell},
journal= {arXiv preprint arXiv:quant-ph/0305084},
year = {2009}
}
备注
37 pages, RevTex