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Anomaly enforced gaplessness and symmetry fractionalization for SpinG symmetries.
- Source :
- Journal of High Energy Physics; Feb2024, Vol. 2024 Issue 2, p1-19, 19p
- Publication Year :
- 2024
-
Abstract
- Symmetries and their anomalies give strong constraints on renormalization group (RG) flows of quantum field theories. Recently, the identification of a theory's global symmetries with its topological sector has provided additional constraints on RG flows to symmetry preserving gapped phases due to mathematical results in category and topological quantum field theory. In this paper, we derive constraints on RG flows from ℤ<subscript>2</subscript>-valued pure- and mixed-gravitational anomalies that can only be activated on non-spin manifolds. We show that such anomalies cannot be matched by a unitary, symmetry preserving gapped phase without symmetry fractionalization. In particular, we discuss examples that commonly arise in 4d gauge theories with fermions. [ABSTRACT FROM AUTHOR]
Details
- Language :
- English
- ISSN :
- 11266708
- Volume :
- 2024
- Issue :
- 2
- Database :
- Complementary Index
- Journal :
- Journal of High Energy Physics
- Publication Type :
- Academic Journal
- Accession number :
- 175966814
- Full Text :
- https://doi.org/10.1007/JHEP02(2024)065