Topological field theory and thermal responses of interacting topological superconductors
Zhong Wang, Xiao-Liang Qi, Shou-Cheng Zhang
DOI 10.1103/PhysRevB.84.014527 · Physical Review B
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Abstract
We investigate the three-dimensional, time-reversal invariant topological superconductors with generic interaction by their response to external fields. The first description is a gravitational topological field theory, which gives a Z2 classification of topological superconductors, and predicts a half quantized thermal Hall effect on the surface. The second description introduces an s-wave proximity pairing field on the surface, and the associated topological defects give an integer Z classification of the topological superconductors.
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