IFIMAR   20926
INSTITUTO DE INVESTIGACIONES FISICAS DE MAR DEL PLATA
Unidad Ejecutora - UE
artículos
Título:
Semiclassical approach to fidelity amplitude
Autor/es:
IGNACIO GARC√ćA-MATA; RAUL O. VALLEJOS; DIEGO A. WISNIACKI
Revista:
NEW JOURNAL OF PHYSICS
Editorial:
IOP PUBLISHING LTD
Referencias:
Lugar: Londres; Año: 2011 vol. 10 p. 103040 - 103040
ISSN:
1367-2630
Resumen:
The fidelity amplitude (FA) is a quantity of paramount importance in echo-type experiments. We use semiclassical theory to study the average FA for quantum chaotic systems under external perturbation. We explain analytically two extreme cases: the random dynamics limit?attained approximately by strongly chaotic systems?and the random perturbation limit, which shows a Lyapunov decay. Numerical simulations help us to bridge the gap between both the extreme cases.
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