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Loschmidt echo in a system of interacting electrons

G. Manfredi·P. -A. Hervieux
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Abstract

We study the Loschmidt echo for a system of electrons interacting through mean-field Coulomb forces. The electron gas is modeled by a self-consistent set of hydrodynamic equations. It is observed that the quantum fidelity drops abruptly after a time that is proportional to the logarithm of the perturbation amplitude. The fidelity drop is related to the breakdown of the symmetry properties of the wave function.

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G. Manfredi, P. -A. Hervieux. 2006-10-20. Loschmidt echo in a system of interacting electrons. https://doi.org/10.1103/physrevlett.97.190404

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