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15 papers · 2 filters
Observing different phases for the dynamics of entanglement in an ion trap
Cecilia Cormick, Juan Pablo Paz
The evolution of the entanglement between two oscillators coupled to a common thermal environment is non-trivial. The long time limit has three qualitatively different behaviors (p…
Universal Response of Quantum Systems with Chaotic Dynamics
Diego A. Wisniacki, Natalia Ares, Eduardo Vergini
The prediction of the response of a closed system to external perturbations is one of the central problems in quantum mechanics, and in this respect, the local density of states (L…
Redundancy of classical and quantum correlations during decoherence
Juan Pablo Paz, Augusto J. Roncaglia
We analyze the time dependence of entanglement and total correlations between a system and fractions of its environment in the course of decoherence. For the quantum Brownian motio…
Entanglement dynamics during decoherence
Juan Pablo Paz, Augusto J. Roncaglia
The evolution of the entanglement between oscillators that interact with the same environment displays highly non-trivial behavior in the long time regime. When the oscillators onl…
Computing the Casimir energy using the point-matching method
F. C. Lombardo, F. D. Mazzitelli, M. Váquez +1
We use a point-matching approach to numerically compute the Casimir interaction energy for a two perfect-conductor waveguide of arbitrary section. We present the method and describ…
Loschmidt Echo and the Local Density of States
Natalia Ares, Diego A. Wisniacki
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 d…