2006/08/02 by Rahul Roy, Roy, Rahul · 1 citation
Physics and Astronomy · #Cold Atom Physics and Bose-Einstein Condensates #FOS: Physical sciences #Quantum chaos and dynamical systems #Superconductivity (cond-mat.supr-con) #Topological Materials and Phenomena #cond-mat.supr-con
paper · pdf · doi:10.48550/arxiv.cond-mat/0608064
brief note on topological invariants for superconductors
arxiv created 2006/08/02 · openalex publication_date 2006/08/02 · arxiv updated 2009/12/01 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28
The topological invariants of gapped time reversal invariant lattice superconductors are studied by mapping the superconducting mean field Hamiltonian to a Bloch Hamiltonian. There is a single Z2 invariant in two dimensions and four such invariants in three dimensions. We briefly discuss the properties of states with non-trivial topological invariants.