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Abstract

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 https://doi.org/10.1142/S0217984924300023 © World Scientific Publishing Company https://www.worldscientific.com/worldscinet/mplb
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:	Symplectic Administrator

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