City Research Online

Symmetry-resolved measures in quantum field theory: A short review

Castro-Alvaredo, O. A. ORCID: 0000-0003-1876-7341 & Santamaría-Sanz, L. (2024). Symmetry-resolved measures in quantum field theory: A short review. Modern Physics Letters B, doi: 10.1142/s0217984924300023


In this short review, we present the key definitions, ideas and techniques involved in the study of symmetry resolved entanglement measures, with a focus on the symmetry resolved entanglement entropy. In order to be able to define such entanglement measures, it is essential that the theory under study possess an internal symmetry. Then, symmetry-resolved entanglement measures quantify the contribution to a particular entanglement measure that can be associated to a chosen symmetry sector. Our review focuses on conformal (gapless/massless/critical) and integrable (gapped/massive) quantum field theories, where the leading computational technique employs symmetry fields known as (composite) branch point twist fields.

Publication Type: Article
Additional Information: Electronic version of an article published as Modern Physics Letters B © World Scientific Publishing Company
Publisher Keywords: Symmetry resolved entanglement measures, entanglement entropy, quantum field theory, twist fields, integrability
Subjects: Q Science > QA Mathematics
Q Science > QC Physics
Departments: School of Science & Technology
School of Science & Technology > Mathematics
SWORD Depositor:
[thumbnail of 2403.06652v2.pdf] Text - Accepted Version
This document is not freely accessible until 28 May 2025 due to copyright restrictions.

To request a copy, please use the button below.

Request a copy


Add to AnyAdd to TwitterAdd to FacebookAdd to LinkedinAdd to PinterestAdd to Email


Downloads per month over past year

View more statistics

Actions (login required)

Admin Login Admin Login