Entanglement negativity after a global quantum quench

DOI10.1088/1742-5468/2014/12/P12017zbMATH Open1456.81055arXiv1410.0900MaRDI QIDQ3301850

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Publication date: 11 August 2020

Published in: (Search for Journal in Brave)

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.

Full work available at URL: https://arxiv.org/abs/1410.0900

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