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Evolution of entanglement after a local quench

V. Eisler·I. Peschel
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Abstract

We study free electrons on an infinite half-filled chain, starting in the ground state with a bond defect. We find a logarithmic increase of the entanglement entropy after the defect is removed, followed by a slow relaxation towards the value of the homogeneous chain. The coefficients depend continuously on the defect strength.

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V. Eisler, I. Peschel. 2007-06-06. Evolution of entanglement after a local quench. https://doi.org/10.1088/1742-5468%2F2007%2F06%2Fp06005

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