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nlin.CD2001★ 38 cited
Ehrenfest times for classically chaotic systems
P. G. Silvestrov, C. W. J. Beenakker
We describe the quantum mechanical spreading of a Gaussian wave packet by means of the semiclassical WKB approximation of Berry and Balazs. We find that the time scale on which…
nlin.CD2001★ 252 cited
Golden rule decay versus Lyapunov decay of the quantum Loschmidt echo
Ph. Jacquod, P. G. Silvestrov, C. W. J. Beenakker
The overlap of two wave functions evolving in time with slightly different Hamiltonians decays exponentially, for perturbation strengths greater than the level spacing. We present…