4 papers · 1 filter
Non-Hermitian Landau Levels
Anton Montag, Tomoki Ozawa
We formulate non-Hermitian Landau levels in two-dimensional systems under a complex perpendicular magnetic field. In the symmetric gauge, we derive their discretely spaced, highly…
Quantum geometrical effects in non-Hermitian systems
Anton Montag, Tomoki Ozawa
We explore the relation between quantum geometry in non-Hermitian systems and physically measurable phenomena. We highlight various situations in which the behavior of a non-Hermit…
Spectral Riemann Sheet Topology of Gapped Non-Hermitian Systems
Anton Montag, Alexander Felski, Flore K. Kunst
We show topological configurations of the complex-valued spectra in gapped non-Hermitian systems. These arise when the distinctive EPs in the energy Riemann sheets of such models a…
Essential implications of similarities in non-Hermitian systems
Anton Montag, Flore K. Kunst
In this paper, we show that three different generalized similarities enclose all unitary and anti-unitary symmetries that induce exceptional points in lower-dimensional non-Hermiti…