Exact results for the entanglement across defects in critical chains

Autor(en)

Ingo Peschel, Viktor Eisler

Abstrakt

We consider fermionic and bosonic quantum chains where a defect separates two subsystems and compare the corresponding entanglement spectra. With these, we calculate their Renyi entanglement entropies and obtain analytical formulae for the continuously varying coefficient of the leading logarithmic term. For the bosonic case we also present numerical results.

Organisation(en)

Quantenoptik, Quantennanophysik und Quanteninformation

Externe Organisation(en)

Freie Universität Berlin (FU)

Journal

Journal of Physics A: Mathematical and General

Band

45

Anzahl der Seiten

14

ISSN

0305-4470

DOI

https://doi.org/10.1088/1751-8113/45/15/155301

Publikationsdatum

2012

Peer-reviewed

Ja

ÖFOS 2012

103026 Quantenoptik

Link zum Portal

https://ucrisportal.univie.ac.at/de/publications/305ad231-9f2f-4154-808c-0dc7531171ec