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Exceptional Topology of Non-Hermitian Systems
Emil J. Bergholtz, Jan Carl Budich, Flore K. Kunst
The current understanding of the role of topology in non-Hermitian (NH) systems and its far-reaching physical consequences observable in a range of dissipative settings are reviewe…
Bulk-boundary correspondence in non-Hermitian systems: stability analysis for generalized boundary conditions
Rebekka Koch, Jan Carl Budich
The bulk-boundary correspondence (BBC), i.e. the direct relation between bulk topological invariants defined for infinite periodic systems and the occurrence of protected zero-ener…
Topological Field Theory far from Equilibrium
Federico Tonielli, Jan Carl Budich, Alexander Altland +1
The observable properties of topological quantum matter are often described by topological field theories. We here demonstrate that this principle extends beyond thermal equilibriu…
Stability of dynamical quantum phase transitions in quenched topological insulators: From multiband to disordered systems
Christian B. Mendl, Jan Carl Budich
Dynamical quantum phase transitions (DQPTs) represent a counterpart in non-equilibrium quantum time evolution of thermal phase transitions at equilibrium, where real time becomes a…
Hyperbolic Nodal Band Structures and Knot Invariants
Marcus Stålhammar, Lukas Rødland, Gregory Arone +2
We extend the list of known band structure topologies to include a large family of hyperbolic nodal links and knots, occurring both in conventional Hermitian systems where their st…
Disentangling Sources of Quantum Entanglement in Quench Dynamics
Lorenzo Pastori, Markus Heyl, Jan Carl Budich
Quantum entanglement may have various origins ranging from solely interaction-driven quantum correlations to single-particle effects. Here, we explore the dependence of entanglemen…