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- W4387293232 abstract "We study defects in symmetry breaking phases, such as domain walls, vortices, and hedgehogs. In particular, we focus on the localized gapless excitations which sometimes occur at the cores of these objects. These are topologically protected by an 't Hooft anomaly. We classify different symmetry breaking phases in terms of the anomalies of these defects, and relate them to the anomaly of the broken symmetry by an anomaly-matching formula. We also derive the obstruction to the existence of a symmetry breaking phase with a local defect. We obtain these results using a long exact sequence of groups of invertible field theories, which we call the symmetry breaking long exact sequence (SBLES). The mathematical backbone of the SBLES is the Smith homomorphism, a family of maps between twisted bordism groups. Though many examples have been studied, we give the first completely general account of the Smith homomorphism. We lift it to a map of Thom spectra and identify the cofiber, producing a long exact sequence of twisted bordism groups; the SBLES is the Anderson dual of that long exact sequence. Our work develops further the theory of higher Berry phase and its bulk-boundary correspondence and serves as a new computational tool for classifying symmetry protected topological phases." @default.
- W4387293232 created "2023-10-03" @default.
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- W4387293232 date "2023-09-28" @default.
- W4387293232 modified "2023-10-04" @default.
- W4387293232 title "A Long Exact Sequence in Symmetry Breaking: order parameter constraints, defect anomaly-matching, and higher Berry phases" @default.
- W4387293232 doi "https://doi.org/10.48550/arxiv.2309.16749" @default.
- W4387293232 hasPublicationYear "2023" @default.
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