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Abstract:

The Loschmidt echo (LE) is a measure of the stability and reversibility of quantum evolution under perturbations of the Hamiltonian. One of the expected and most relevant characteristics of this quantity for chaotic systems is an exponential decay with a perturbation-independent decay rate given by the classical Lyapunov exponent. However, a non-uniform decay-instead of the Lyapunov regime-has been reported in several systems. In this work, we find an analytical semiclassical expression for the averaged fidelity amplitude that can be directly related to the anomalous-unexpected-behaviour of the LE. © 2011 IOP Publishing Ltd.

Registro:

Documento: Artículo
Título:Loschmidt echo in quantum maps: The elusive nature of the Lyapunov regime
Autor:García-Mata, I.; Wisniacki, D.A.
Filiación:Departamento de Física, Lab. TANDAR-CNEA, Buenos Aires, Argentina
Instituto de Investigaciones Físicas de Mar Del Plata (IFIMAR), CONICET-UNMdP, Funes 3350, B7602AYL Mar del Plata, Argentina
Consejo Nacional de Investigaciones Científicas y Tecnológicas (CONICET), Argentina
Departamento de Física, FCEyN UBA, CONICET, C1428EGA Buenos Aires, Argentina
Año:2011
Volumen:44
Número:31
DOI: http://dx.doi.org/10.1088/1751-8113/44/31/315101
Título revista:Journal of Physics A: Mathematical and Theoretical
Título revista abreviado:J. Phys. Math. Theor.
ISSN:17518113
Registro:https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_17518113_v44_n31_p_GarciaMata

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Citas:

---------- APA ----------
García-Mata, I. & Wisniacki, D.A. (2011) . Loschmidt echo in quantum maps: The elusive nature of the Lyapunov regime. Journal of Physics A: Mathematical and Theoretical, 44(31).
http://dx.doi.org/10.1088/1751-8113/44/31/315101
---------- CHICAGO ----------
García-Mata, I., Wisniacki, D.A. "Loschmidt echo in quantum maps: The elusive nature of the Lyapunov regime" . Journal of Physics A: Mathematical and Theoretical 44, no. 31 (2011).
http://dx.doi.org/10.1088/1751-8113/44/31/315101
---------- MLA ----------
García-Mata, I., Wisniacki, D.A. "Loschmidt echo in quantum maps: The elusive nature of the Lyapunov regime" . Journal of Physics A: Mathematical and Theoretical, vol. 44, no. 31, 2011.
http://dx.doi.org/10.1088/1751-8113/44/31/315101
---------- VANCOUVER ----------
García-Mata, I., Wisniacki, D.A. Loschmidt echo in quantum maps: The elusive nature of the Lyapunov regime. J. Phys. Math. Theor. 2011;44(31).
http://dx.doi.org/10.1088/1751-8113/44/31/315101