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Perturbations and chaos in quantum maps
(American Physical Society, 2012-08)
The local density of states (LDOS) is a distribution that characterizes the effects of perturbations on quantum systems. Recently, a semiclassical theory was proposed for the LDOS of chaotic billiards and maps. This theory ...
Three-dimensional classical and quantum stable structures of dissipative systems
(American Physical Society, 2019-01)
We study the properties of classical and quantum stable structures in a three-dimensional (3D) parameter space corresponding to the dissipative kicked top. This is a model system in quantum and classical chaos that gives ...
Distribution of resonances in the quantum open baker map
(American Physical Society, 2009-01)
We study relevant features of the spectrum of the quantum open baker map. The opening consists of a cut along the momentum p direction of the 2-torus phase space, modeling an open chaotic cavity. We study briefly the ...
Scaling laws in the quantum-to-classical transition in chaotic systems
(American Physical Society, 2009-02)
We study the quantum-to-classical transition in a chaotic system surrounded by a diffusive environment. First, we analyze the emergence of classicality when it is monitored by the Renyi entropy, a measure of the entanglement ...
Quantum-to-classical transition in a system with mixed classical dynamics
(American Physical Society, 2006-12)
We study how decoherence rules the quantum-classical transition of the kicked harmonic oscillator. The system presents classical dynamics that ranges from regular to strong chaotic behavior depending on the amplitude of ...
Loschmidt echo and the local density of states
(American Physical Society, 2009-10)
Loschmidt echo (LE) is a measure of reversibility and sensitivity to perturbations of quantum evolutions. For weak perturbations its decay rate is given by the width of the local density of states (LDOS). When the perturbation ...
Short periodic orbit approach to resonances and the fractal Weyl law
(American Physical Society, 2012-03)
We investigate the properties of the semiclassical short periodic orbit approach for the study of open quantum maps that was recently introduced. We provide solid numerical evidence, for the paradigmatic systems of the ...
Absorption of waves by large-scale winds in stratified turbulence
(American Physical Society, 2015-03)
The atmosphere is a nonlinear stratified fluid in which internal gravity waves are present. These waves interact with the flow, resulting in wave turbulence that displays important differences with the turbulence observed ...
Quantum manifestations of classical nonlinear resonances
(American Physical Society, 2015-12)
When an integrable classical system is perturbed, nonlinear resonances are born, grow, and eventually disappear due to chaos. In this paper the quantum manifestations of such a transition are studied in the standard map. ...