Stability of quantum motion: beyond Fermi-golden-rule and Lyapunov decay.
We study, analytically and numerically, the stability of quantum motion for a classically chaotic system. We show the existence of different regimes of fidelity decay. In particular, when the underlying classical dynamics is weakly chaotic, deviations from Fermi-golden-rule and Lyapounov regimes are observed and discussed.
Wang
Wen-ge
WG
Department of Physics, National University of Singapore, Singapore 117542.
Casati
G
G
Li
Baowen
B