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arxiv 0912.3174 v1 pith:XEOLLMOV submitted 2009-12-16 quant-ph

Survival Probability of a Doorway State in regular and chaotic environments

classification quant-ph
keywords probabilitychaoticcomplexityenvironmentregularstatesurvivalbackground
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We calculate survival probability of a special state which couples randomly to a regular or chaotic environment. The environment is modelled by a suitably chosen random matrix ensemble. The exact results exhibit non--perturbative features as revival of probability and non--ergodicity. The role of background complexity and of coupling complexity is discussed as well.

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