Loschmidt echo in a system of interacting electrons
Quantum Physics
2009-11-13 v1
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.
Cite
@article{arxiv.quant-ph/0610169,
title = {Loschmidt echo in a system of interacting electrons},
author = {G. Manfredi and P. -A. Hervieux},
journal= {arXiv preprint arXiv:quant-ph/0610169},
year = {2009}
}
Comments
4 pages, 6 figures, to appear in PRL