Unconditional Pointer States from Conditional Master Equations
Quantum Physics
2009-11-06 v3
Abstract
When part of the environment responsible for decoherence is used to extract information about the decohering system, the preferred {\it pointer states} remain unchanged. This conclusion -- reached for a specific class of models -- is investigated in a general setting of conditional master equations using suitable generalizations of predictability sieve. We also find indications that the einselected states are easiest to infer from the measurements carried out on the environment.
Keywords
Cite
@article{arxiv.quant-ph/0006098,
title = {Unconditional Pointer States from Conditional Master Equations},
author = {D. A. R. Dalvit and J. Dziarmaga and W. H. Zurek},
journal= {arXiv preprint arXiv:quant-ph/0006098},
year = {2009}
}
Comments
4 pages, 3 .eps figures; final version to appear in Phys.Rev.Lett