Effectively classical quantum states for open systems
Quantum Physics
2009-11-06 v1
Abstract
Notions of robust and "classical" states for an open quantum system are introduced and discussed in the framework of the isometric-sweeping decomposition of trace class operators. Using the predictability sieve proposed by Zurek, ``quasi-classical'' states are defined. A number of examples illustrating how the ``quasi-classical'' states correspond to classical points in phase space connected with the measuring apparatus are presented.
Cite
@article{arxiv.quant-ph/0003103,
title = {Effectively classical quantum states for open systems},
author = {Ph. Blanchard and R. Olkiewicz},
journal= {arXiv preprint arXiv:quant-ph/0003103},
year = {2009}
}
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