Journal
ACTA POLYTECHNICA
Volume 57, Issue 6, Pages 470-476Publisher
CZECH TECHNICAL UNIV PRAGUE
DOI: 10.14311/AP.2017.57.0470
Keywords
complex Berry phase; PT symmetry; gauge smoothing
Categories
Ask authors/readers for more resources
We numerically investigate topological phases of periodic lattice systems in tight-binding description under the influence of dissipation. The effects of dissipation are effectively described by PT-symmetric potentials. In this framework we develop a general numerical gauge smoothing procedure to calculate complex Berry phases from the biorthogonal basis of the system's non-Hermitian Hamiltonian. Further, we apply this method to a one-dimensional PT-symmetric lattice system and verify our numerical results by an analytical calculation.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available