Topological field theory and thermal responses of interacting topological superconductors

Details Topological field theory and thermal responses of interacting topological superconductors Topological field theory and thermal responses of interacting topological superconductors

2010-11-02

arxiv.org/abs/1011.0586v2

Phys. Rev. B 84, 014527 (2011)

Physics

Condensed Matter

Strongly Correlated Electrons

5 pages,1 figure. Slightly modified version. Title is changed

Scientific paper

10.1103/PhysRevB.84.014527

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 $Z_2$ 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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