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Loschmidt echo for local perturbations: non-monotonic cross-over from the Fermi-golden-rule to the escape-rate regime

Goussev, Arseni, Waltner, Daniel, Richter, Klaus and Jalabert, Rodolfo A. (2008) Loschmidt echo for local perturbations: non-monotonic cross-over from the Fermi-golden-rule to the escape-rate regime. New Journal of Physics 10, 093010.

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Date of publication of this fulltext: 05 Aug 2009 13:57

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Other URL: http://www.iop.org/EJ/abstract/1367-2630/10/9/093010


Abstract

We address the sensitivity of quantum mechanical time evolution by considering the time decay of the Loschmidt echo (LE) (or fidelity) for local perturbations of the Hamiltonian. Within a semiclassical approach, we derive analytical expressions for the LE decay for chaotic systems for the whole range from weak to strong local perturbations and identify different decay regimes which complement ...

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Item type:Article
Date:10 September 2008
Institutions:Physics > Institute of Theroretical Physics > Chair Professor Richter > Group Klaus Richter
Projects:Graduiertenkolleg Nichtlinearität und Nichtgleichgewicht, FOR 760: Scattering Systems with Complex Dynamics
Identification Number:
ValueType
10.1088/1367-2630/10/9/093010DOI
0804.0571arXiv ID
Dewey Decimal Classification:500 Science > 530 Physics
Status:Published
Refereed:Yes, this version has been refereed
Created at the University of Regensburg:Yes
Item ID:7800
Owner only: item control page

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