Universal topological quench dynamics: Altland-Zirnbauer tenfold classes
Abstract
Topological phases of the famous Altland-Zirnbauer (AZ) tenfold classes are defined on the equilibrium ground states. Whether such equilibrium topological phases have universal correspondence to far-from-equilibrium quantum dynamics is a fundamental issue of both theoretical and experimental importance. Here we uncover the universal topological quench dynamics linking to the equilibrium topological phases for the complete AZ tenfold classes, with a general framework being established. We show a fundamental result that a -dimensional topological phase of the tenfold class, with an integer invariant or index defined on high symmetry momenta, is generically characterized by topology reduced to the highest-order band-inversion surfaces located at arbitrary discrete momenta of Brillouin zone. Such dimension-reduced topology is further captured by universal topological patterns emerging in far-from-equilibrium quantum dynamics by quenching the system from trivial phase to the topological regime, rendering the dynamical hallmark of the equilibrium topological phase. This work establishes a universal dynamical characterization for the complete AZ symmetry classes of topological phases, which has broad applications in theory and experiment.
Cite
@article{arxiv.2104.00617,
title = {Universal topological quench dynamics: Altland-Zirnbauer tenfold classes},
author = {Lin Zhang and Wei Jia and Xiong-Jun Liu},
journal= {arXiv preprint arXiv:2104.00617},
year = {2022}
}
Comments
6+11 pages; 3+6 figures; 2 tables; Discussions are improved and typos are corrected