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Unitary categorical symmetries

Abstract:
Global invertible symmetries act unitarily on local observables or states of a quantum system. In this note, we aim to generalise this statement to non-invertible symmetries by considering unitary actions of higher fusion category symmetries C on twisted sector local operators. We propose that the latter transform in ∗-representations of the tube algebra associated to C, which we introduce and classify using the notion of higher S-matrices of higher braided fusion categories.
Publication status:
Published
Peer review status:
Peer reviewed

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Publisher copy:
10.1088/1751-8121/ae6be0

Authors

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Institution:
University of Oxford
Division:
MPLS
Department:
Mathematical Institute
Role:
Author
ORCID:
0000-0002-5993-5797



Publisher:
IOP Publishing
Journal:
Journal of Physics A: Mathematical and Theoretical More from this journal
Volume:
59
Issue:
20
Pages:
205204
Article number:
205204
Publication date:
2026-05-21
Acceptance date:
2026-05-11
DOI:
EISSN:
1751-8121
ISSN:
1751-8113


Language:
English
Keywords:
Source identifiers:
4066292
Deposit date:
2026-05-21
ARK identifier:
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