Semiclassical Mechanism for the Quantum Decay in Open Chaotic Systems

Details Semiclassical Mechanism for the Quantum Decay in Open Chaotic Systems Semiclassical Mechanism for the Quantum Decay in Open Chaotic Systems

2008-05-23

arxiv.org/abs/0805.3585v1

Physical Review Letters 101, 174101 (2008)

Physics

Condensed Matter

Mesoscale and Nanoscale Physics

4 pages, 2 figures

Scientific paper

10.1103/PhysRevLett.101.174101

We address the decay in open chaotic quantum systems and calculate semiclassical corrections to the classical exponential decay. We confirm random matrix predictions and, going beyond, calculate Ehrenfest time effects. To support our results we perform extensive numerical simulations. Within our approach we show that certain (previously unnoticed) pairs of interfering, correlated classical trajectories are of vital importance. They also provide the dynamical mechanism for related phenomena such as photo-ionization and -dissociation, for which we compute cross section correlations. Moreover, these orbits allow us to establish a semiclassical version of the continuity equation.

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