• Corpus ID: 238857139

O ct 2 02 1 Interacting SPT phases are not Morita invariant

  title={O ct 2 02 1 Interacting SPT phases are not Morita invariant},
  author={Luuk Stehouwer},
Class D topological superconductors have been described as invertible topological phases protected by charge Q and particle-hole symmetry C. A competing description is that class D has no internal symmetries except for the fermion parity group ZF2 = {1, (−1) F }. In the weakly interacting setting, it can be argued that ‘particle-hole symmetry cancels charge’ in a suitable sense. Namely, the classification results are independent of which of the two internal symmetry groups are taken because of… 
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