Survival Probability of a Doorway State in regular and chaotic environments
arXiv:0912.3174 · doi:10.1088/1751-8113/43/21/215102
Abstract
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.
19 pages 5 Figures
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