Entanglement negativity after a global quantum quench
Statistical Mechanics
2014-12-23 v2 High Energy Physics - Theory
Quantum Physics
Abstract
We study the time evolution of the logarithmic negativity after a global quantum quench. In a 1+1 dimensional conformal invariant field theory, we consider the negativity between two intervals which can be either adjacent or disjoint. We show that the negativity follows the quasi-particle interpretation for the spreading of entanglement. We check and generalise our findings with a systematic analysis of the negativity after a quantum quench in the harmonic chain, highlighting two peculiar lattice effects: the late birth and the sudden death of entanglement.
Keywords
Cite
@article{arxiv.1410.0900,
title = {Entanglement negativity after a global quantum quench},
author = {Andrea Coser and Erik Tonni and Pasquale Calabrese},
journal= {arXiv preprint arXiv:1410.0900},
year = {2014}
}
Comments
32 pages, 10 figures, v2: minor corrections, published version