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Entanglement negativity after a global quantum quench

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arxiv 1410.0900 v2 pith:J3L7WBOP submitted 2014-10-03 cond-mat.stat-mech hep-thquant-ph

Entanglement negativity after a global quantum quench

classification cond-mat.stat-mech hep-thquant-ph
keywords negativityentanglementquantumquenchglobaladjacentanalysisbirth
verification ladder T0 review T1 audit T2 compute T3 formal T4 reserved
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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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Cited by 3 Pith papers

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