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Quantum quenches in a pseudo-Hermitian Chern insulator
- Source :
- Phys. Rev. A 107, 012219 (2023)
- Publication Year :
- 2022
-
Abstract
- We propose to uncover the topology of a pseudo-Hermitian Chern insulator by quantum quench dynamics. The Bloch Hamiltonian of the pseudo-Hermitian Chern insulator is defined in the basis of the q-deformed Pauli matrices, which are related to the representation of the deformed algebras. We show the bulk-surface duality of the pseudo-Hermitian phases, then further build a concrete relation between the static band topology and quench dynamics, in terms of the time-averaged spin textures. The results are also generalized into a fully nonequilibrium case where the postquench evolution is governed by a Floquet pseudo-Hermitian Hamiltonian. Furthermore, we propose a possible scheme to realize the seemingly challenging model in a bilayer lattice and detect the dynamics with a double-quench protocol.<br />Comment: 10 pages, 6 figures
Details
- Database :
- arXiv
- Journal :
- Phys. Rev. A 107, 012219 (2023)
- Publication Type :
- Report
- Accession number :
- edsarx.2209.15204
- Document Type :
- Working Paper
- Full Text :
- https://doi.org/10.1103/PhysRevA.107.012219