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
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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
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Año: | 2011
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Volumen: | 44
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Número: | 31
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DOI: |
http://dx.doi.org/10.1088/1751-8113/44/31/315101 |
Título revista: | Journal of Physics A: Mathematical and Theoretical
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Título revista abreviado: | J. Phys. Math. Theor.
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ISSN: | 17518113
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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