3 papers
cond-mat.mes-hall2020
Phase Transitions and Generalized Biorthogonal Polarization in Non-Hermitian Systems
Elisabet Edvardsson, Flore K. Kunst, Tsuneya Yoshida +1
Non-Hermitian (NH) Hamiltonians can be used to describe dissipative systems, and are currently intensively studied in the context of topology. A salient difference between Hermitia…
cond-mat.mes-hall2018
Non-Hermitian extensions of higher-order topological phases and their biorthogonal bulk-boundary correspondence
Elisabet Edvardsson, Flore K. Kunst, Emil J. Bergholtz
Non-Hermitian Hamiltonians, which describe a wide range of dissipative systems, and higher-order topological phases, which exhibit novel boundary states on corners and hinges, comp…
cond-mat.mes-hall2018
Biorthogonal Bulk-Boundary Correspondence in Non-Hermitian Systems
Flore K. Kunst, Elisabet Edvardsson, Jan Carl Budich +1
Non-Hermitian systems exhibit striking exceptions from the paradigmatic bulk-boundary correspondence, including the failure of bulk Bloch band invariants in predicting boundary sta…