On entanglement evolution across defects in critical chains

Autor(en)

Viktor Eisler, Ingo Peschel

Abstrakt

We consider a local quench where two free-fermion half-chains are coupled via a defect. We show that the logarithmic increase of the entanglement entropy is governed by the same effective central charge which appears in the ground-state properties and which is known exactly. For unequal initial filling of the half-chains, we determine the linear increase of the entanglement entropy.

Organisation(en)

Quantenoptik, Quantennanophysik und Quanteninformation

Externe Organisation(en)

Freie Universität Berlin (FU)

Journal

Europhysics Letters

Band

99

Anzahl der Seiten

6

ISSN

0295-5075

DOI

https://doi.org/10.1209/0295-5075/99/20001

Publikationsdatum

2012

Peer-reviewed

Ja

ÖFOS 2012

103024 Quantenfeldtheorie, 103025 Quantenmechanik

Link zum Portal

https://ucrisportal.univie.ac.at/de/publications/e68f3378-4cf7-4822-81f8-15dbe28e819c