Universal decay of classical Loschmidt echo of neutrally stable but mixing dynamics

2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/80828We provide analytical and numerical evidence that classical mixing systems which lack exponential sensitivity on initial conditions, exhibit universal decay of Loschmidt echo which turns out to be a function of a single scaled time variable delta^(2/5)t, where delta is the strength of perturbation. The role of dynamical instability and entropy production is discussed.4 Pages in Revtex with 4 eps-figsChaotic DynamicsUniversal decay of classical Loschmidt echo of neutrally stable but mixing dynamicstext