Unwinding of a one-dimensional topological superconductor
Achim Rosch
DOI 10.1103/PhysRevB.86.125120 · Physical Review B
Active bibliographic source — not scientific approval
Bibliographic access preserves source history; it does not approve extracted materials or validate reported claims. Review warnings on each occurrence separately.
Abstract
We show that a topological superconductor made of four chains of superconducting spinless fermions characterized by four Majorana edge states can adiabatically be deformed into a trivial band insulator. To unwind this time-reversal invariant topological superconductor, interactions to spinful fermions are switched on along an adiabatic path. Thereby, we couple modes which belong to two different representations of the time-reversal symmetry operator T with T2=1 and T2=−1, respectively. This observation can be understood by investigating how the relevant symmetries act on the entanglement spectrum giving rise to four instead of eight different topological phases with Majorana edge modes. We also show that a simple level crossing of doubly and singly degenerate states occurs in the entanglement spectrum on deforming the quantum state.
Similar papers
Topological invariant for generic one-dimensional time-reversal-symmetric superconductors in class DIII
similarity 0.89Jan Carl Budich & Eddy Ardonne
Source status unknown — claims are unverified
Dissipation-driven dynamical topological phase transitions in two-dimensional superconductors
similarity 0.88Andrea Nava et al.
Source status unknown — claims are unverified
Topology-dependent quantum dynamics and entanglement-dependent topological pumping in superconducting qubit chains
similarity 0.88Feng Mei et al.
Source status unknown — claims are unverified
-periodic supercurrent tuned by an axial magnetic flux in topological insulator nanowires
similarity 0.87Ralf Fischer et al. · 2021 · arXiv:2110.05143
Source status unknown — claims are unverified
Interaction Effects in Topological Superconducting Wires Supporting Majorana Fermions
similarity 0.87E. M. Stoudenmire et al. · 2011 · arXiv:1104.5493
Source status unknown — claims are unverified
From Fractionalization to Chiral Topological Superconductivity in a Flat Chern Band
similarity 0.87Daniele Guerci et al.
Source status unknown — claims are unverified