Topological invariant for generic one-dimensional time-reversal-symmetric superconductors in class DIII

  title={Topological invariant for generic one-dimensional time-reversal-symmetric superconductors in class DIII},
  author={Jan Carl Budich and Eddy Ardonne},
  journal={Physical Review B},
A one-dimensional time-reversal-symmetric topological superconductor (symmetry class DIII) features a single Kramers pair of Majorana bound states at each of its ends. These holographic quasiparticles are non-Abelian anyons that obey Ising-type braiding statistics. In the special case where an additional U (1) spin rotation symmetry is present, this state can be understood as two copies of a Majorana wire in symmetry class D, one copy for each spin block. We present a manifestly gauge invariant… 

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