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Probing Green's Function Zeros by Co-tunneling through Mott Insulators
Carl Lehmann, Lorenzo Crippa, Giorgio Sangiovanni +1
Quantum tunneling experiments have provided deep insights into basic excitations occurring as Green's function poles in the realm of complex quantum matter. However, strongly corre…
Exceptional Luttinger Liquids from sublattice dependent interaction
J. Schwardt, B. Michen, C. Lehmann +1
We demonstrate how Exceptional Points (EPs) naturally occur in the Luttinger Liquid (LL) theory describing the low-energy excitations of a microscopic lattice model with sublattice…
Geometrically Taming Dynamical Entanglement Growth in Purified Quantum States
Tim Pokart, Carl Lehmann, Jan Carl Budich
Entanglement properties of purified quantum states are of key interest for two reasons. First, in quantum information theory, minimally entangled purified states define the Entangl…
Protection of Correlation-Induced Phase Instabilities by Exceptional Susceptibilities
Matthias Reitner, Lorenzo Crippa, Dominik Robert Fus +3
At thermal equilibrium, we find that generalized susceptibilities encoding the static physical response properties of Hermitian many-electron systems possess inherent non-Hermitian…
Spontaneous Formation of Exceptional Points at the Onset of Magnetism
Lorenzo Crippa, Giorgio Sangiovanni, Jan Carl Budich
We reveal how symmetry protected nodal points in topological semimetals may be promoted to pairs of generically stable exceptional points (EPs) by symmetry-breaking fluctuations at…
Dissipative preparation of fractional Chern insulators
Zhao Liu, Emil J. Bergholtz, Jan Carl Budich
We report on the numerically exact simulation of the dissipative dynamics governed by quantum master equations that feature fractional quantum Hall states as unique steady states.…