2000/02/29 by Fernando Cucchietti, F. M. Cucchietti, Horacio M. Pastawski +3 · 2 citations
Chemistry · Physics and Astronomy · #Molecular spectroscopy and chirality #Quantum chaos and dynamical systems #Scientific Research and Discoveries #cond-mat.mes-hall #nlin.CD #quant-ph
paper · pdf · doi:10.1016/s0378-4371(00)00169-2
published as Physica A, 283 (2000) p.285-289 · Typos corrected, published version
openalex publication_date 2000/08/01 · arxiv created 2001/03/29 · arxiv updated 2009/11/30 · openalex created_date 2016/06/24 · openalex updated_date 2026/07/28
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 τϕ. Recent experimental and analytical evidence on classically chaotic systems suggest that, under certain conditions, τϕ 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.