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arXiv · 1410.0900

Entanglement negativity after a global quantum quench

Andrea Coser·Erik Tonni·Pasquale Calabrese
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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.

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Andrea Coser, Erik Tonni, Pasquale Calabrese. 2014-10-03. Entanglement negativity after a global quantum quench. https://doi.org/10.1088/1742-5468/2014/12/p12017

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