Ontology highlight
ABSTRACT:
SUBMITTER: Qiu X
PROVIDER: S-EPMC6818370 | biostudies-literature | 2019 Oct
REPOSITORIES: biostudies-literature
Qiu Xingze X Deng Tian-Shu TS Hu Ying Y Xue Peng P Yi Wei W
iScience 20190928
We identify dynamic topological phenomena such as dynamic Chern numbers and dynamic quantum phase transitions in quantum quenches of the non-Hermitian Su-Schrieffer-Heeger Hamiltonian with parity-time (PT) symmetry. Their occurrences in the non-unitary dynamics are intimately connected with fixed points in the Brillouin zone, where the density matrices do not evolve in time. Based on our theoretical formalism characterizing topological properties of non-unitary dynamics, we prove the existence o ...[more]