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Charged entanglement entropy of local operators
Stockholm University, Nordic Institute for Theoretical Physics (Nordita).
Number of Authors: 3
2016 (English)In: Physical Review D, ISSN 2470-0010, Vol. 93, no 10, 105032Article in journal (Refereed) Published
Abstract [en]

In this work we consider the time evolution of charged Renyi entanglement entropies after exciting the vacuum with local fermionic operators. In order to explore the information contained in charged Renyi entropies, we perform computations of their excess due to the operator excitation in two-dimensional conformal field theory, free fermionic field theories in various dimensions as well as holography. In the analysis we focus on the dependence on the entanglement charge, the chemical potential and the spacetime dimension. We find that excesses of charged (Renyi) entanglement entropy can be interpreted in terms of charged quasiparticles. Moreover, we show that by appropriately tuning the chemical potential, charged Renyi entropies can be used to extract entanglement in a certain charge sector of the excited state.

Place, publisher, year, edition, pages
2016. Vol. 93, no 10, 105032
National Category
Physical Sciences
Identifiers
URN: urn:nbn:se:su:diva-132072DOI: 10.1103/PhysRevD.93.105032ISI: 000376259800009OAI: oai:DiVA.org:su-132072DiVA: diva2:947061
Available from: 2016-07-06 Created: 2016-07-06 Last updated: 2016-07-06Bibliographically approved

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Caputa, Pawel
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Nordic Institute for Theoretical Physics (Nordita)
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