Topology of critical chiral phases: multiband insulators and superconductors
Mesoscale and Nanoscale Physics
2021-10-20 v2 Quantum Gases
Statistical Mechanics
Abstract
Recent works have proved the existence of symmetry-protected edge states in certain one-dimensional topological band insulators and superconductors at the gap-closing points which define quantum phase transitions between two topologically nontrivial phases. We show how this picture generalizes to multiband critical models belonging to any of the chiral symmetry classes AIII, BDI, or CII of noninteracting fermions in one dimension.
Keywords
Cite
@article{arxiv.2104.08853,
title = {Topology of critical chiral phases: multiband insulators and superconductors},
author = {Oleksandr Balabanov and Daniel Erkensten and Henrik Johannesson},
journal= {arXiv preprint arXiv:2104.08853},
year = {2021}
}
Comments
16 pages, 2 figures; typos corrected, added text and references