Relation between the Dynamics of the Reduced Purity and Correlations
Quantum Physics
2010-10-07 v1
Abstract
A general property of the relation between the dynamics of the reduced purity and correlations is investigated in quantum mechanical systems. We show that a non-zero time-derivative of the reduced purity of a system implies the existence of non-zero correlations with its environment under any unbounded Hamiltonians with finite variance. This shows the role of local dynamical information on the correlations, as well as the role of correlations in the mechanism of purity change.
Keywords
Cite
@article{arxiv.0910.5297,
title = {Relation between the Dynamics of the Reduced Purity and Correlations},
author = {Gen Kimura and Hiromichi Ohno and Milan Mosonyi},
journal= {arXiv preprint arXiv:0910.5297},
year = {2010}
}
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7 pages