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Dynamical Origin of Decoherence in Clasically Chaotic Systems

F. M. Cucchietti·H. M. Pastawski·R. Jalabert
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Abstract

The decay of the overlap between a wave packet evolved with a Hamiltonian H and the same state evolved with H}+$Σ$ serves as a measure of the decoherence time $τ_ϕ$. Recent experimental and analytical evidence on classically chaotic systems suggest that, under certain conditions, $τ_ϕ$ depends on H but not on $Σ$. By solving numerically a Hamiltonian model we find evidence of that property provided that the system shows a Wigner-Dyson spectrum (which defines quantum chaos) and the perturbation exceeds a crytical value defined by the parametric correlations of the spectra.

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F. M. Cucchietti, H. M. Pastawski, R. Jalabert. 2001-03-29. Dynamical Origin of Decoherence in Clasically Chaotic Systems. https://doi.org/10.1016/s0378-4371(00)00169-2

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