4D beyond-cohomology topological phase protected by C_{2} symmetry and its boundary theories
We study bosonic symmetry-protected topological (SPT) phases with C_{2} rotational symmetry in four spatial dimensions which is not captured by the group cohomology classification. By using the topological crystal approach, we show that the topological crystalline state of this SPT phase is given by...
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| Format: | Article |
| Language: | English |
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American Physical Society
2020-08-01
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| Series: | Physical Review Research |
| Online Access: | http://doi.org/10.1103/PhysRevResearch.2.033236 |