2004/09/03 by Diego V. Bevilaqua, Diego Vaz Bevilaqua, Bevilaqua, Diego V. +2 · 1 citation
Computer Science · Physics and Astronomy · #Advanced Thermodynamics and Statistical Mechanics #Chaotic Dynamics (nlin.CD) #FOS: Physical sciences #Nonlinear Dynamics and Pattern Formation #Quantum Physics (quant-ph) #Quantum many-body systems #nlin.CD #quant-ph
paper · pdf · doi:10.48550/arxiv.nlin/0409007
4 pages, 2 figures
arxiv created 2004/09/03 · openalex publication_date 2004/09/03 · arxiv updated 2009/12/01 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28
In this letter we analyse the behavior of fidelity decay under a very specific kind of perturbation: phase space displacements. Under these perturbations, systems will decay following the Lyapunov regime only. Others universal regimes discussed in the literature are not presented in this case; instead, for small values of the perturbation we observe quantum freeze of the fidelity. We also show that it is possible to connect this result with the incoherent neutron scattering problem