A random matrix approach to decoherence

Details A random matrix approach to decoherence A random matrix approach to decoherence

2001-12-06

arxiv.org/abs/quant-ph/0112030v1

J. Opt. B 4, S386-S392 (2002)

Physics

Quantum Physics

11 pages, 5 eps-figures

Scientific paper

10.1088/1464-4266/4/4/325

In order to analyze the effect of chaos or order on the rate of decoherence in a subsystem, we aim to distinguish effects of the two types of dynamics by choosing initial states as random product states from two factor spaces representing two subsystems. We introduce a random matrix model that permits to vary the coupling strength between the subsystems. The case of strong coupling is analyzed in detail, and we find no significant differences except for very low-dimensional spaces.

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