Semiclassical mechanism for the quantum decay in open chaotic systems

Waltner, Daniel, Gutiérrez, Martha, Goussev, Arseni and Richter, Klaus (2008) Semiclassical mechanism for the quantum decay in open chaotic systems. Physical Review Letters, 101 (17). ISSN 0031-9007

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Official URL: http://dx.doi.org/10.1103/PhysRevLett.101.174101

Abstract

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 photoionization and photodissociation, for which we compute cross-section correlations. Moreover, these orbits allow us to establish a semiclassical version of the continuity equation.

Item Type: Article
Subjects: F300 Physics
G100 Mathematics
Department: Faculties > Business and Law > School of Law
Depositing User: Arseni Goussev
Date Deposited: 08 Nov 2012 11:43
Last Modified: 12 May 2017 05:02
URI: http://nrl.northumbria.ac.uk/id/eprint/10198

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