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Decoherence time in self-induced decoherence
2005
Physical Review A. Atomic, Molecular, and Optical Physics
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A general method for obtaining the decoherence time in self-induced decoherence is presented. In particular, it is shown that such a time can be computed from the poles of the resolvent or of the initial conditions in the complex extension of the Hamiltonian's spectrum. Several decoherence times are estimated: 10^-13- 10^-15s for microscopic systems, and 10^-37-10^-39s for macroscopic bodies. For the particular case of a thermal bath, our results agree with those obtained by the einselection (environment-induced decoherence) approach.
doi:10.1103/physreva.72.012102
fatcat:p4m6ppvtozhaxaabo3wwk4xfvi