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Entanglement hamiltonians in 1D free lattice models after a global quantum quench

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arxiv 1905.01144 v2 pith:KLD4Y526 submitted 2019-05-03 cond-mat.stat-mech hep-th

classification cond-mat.stat-mechhep-th
keywords entanglementevolutionchainfreeglobalhamiltoniansmodelsquench
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We study the temporal evolution of the entanglement hamiltonian of an interval after a global quantum quenchin free lattice models in one spatial dimension. In a harmonic chain we explore a quench of the frequency parameter. In a chain of free fermions at half filling we consider the evolution of the ground state of a fully dimerised chain through the homogeneous hamiltonian. We focus on critical evolution hamiltonians. The temporal evolutions of the gaps in the entanglement spectrum are analysed. The entanglement hamiltonians in these models are characterised by matrices that provide also contours for the entanglement entropies. The temporal evolution of these contours for the entanglement entropy is studied, also by employing existing conformal field theory results for the semi-infinite line and the quasi-particle picture for the global quench.

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Cited by 2 Pith papers

Reviewed papers in the Pith corpus that reference this work. Sorted by Pith novelty score. Full citation record

  1. The negativity contour: a quasi-local measure of entanglement for mixed states

    hep-th 2019-08 conditional novelty 7.0 of 10

    The authors define a computable negativity contour via a derivative of logarithmic negativity, verify it against a Gaussian ansatz, and apply it to Fermi surfaces, holographic non-Fermi liquids, and thermalization.

  2. Quantum Renyi relative entropies on a spin chain with interface defects

    cond-mat.stat-mech 2019-08 conditional novelty 6.0 of 10

    For a free-fermion chain with a hopping defect, the quantum Renyi relative entropies are expressed as a fitted formula that depends on the effective central charge and subsystem size.

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