English

Universal topological quench dynamics: Altland-Zirnbauer tenfold classes

Mesoscale and Nanoscale Physics 2022-06-27 v2 Quantum Gases Quantum Physics

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 dd-dimensional topological phase of the tenfold class, with an integer invariant or Z2\mathbb{Z}_{2} 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.

Keywords

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

R2 v1 2026-06-24T00:46:55.163Z