Collège Doctoral - Doktorandenkollegien

Statistical Physics of Complex Systems

Coventry - Leipzig - Lviv - Nancy

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Publication

Title Entanglement evolution after connecting finite to infinite quantum chains
Authors Eisler V., Karevski D., Platini T., Peschel I.
Reference J. Stat. Mech. (2008) P01023
DOI10.1088/1742-5468
ArXivarxiv:0711.0289
Abstract We study zero-temperature XX chains and transverse Ising chains and join an initially separate finite piece on one or on both sides to an infinite remainder. In both critical and non-critical systems we find a typical increase of the entanglement entropy after the quench, followed by a slow decay towards the value of the homogeneous chain. In the critical case, the predictions of conformal field theory are verified for the first phase of the evolution, while at late times a step structure can be observed.


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