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cond-mat.str-el2024
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…
cond-mat.mes-hall2024★ 1 cited
Nodal Spectral Functions Stabilized by Non-Hermitian Topology of Quasiparticles
Carl Lehmann, Tommaso Micallo, Jan Carl Budich
In quantum materials, basic observables such as spectral functions and susceptibilities are determined by Green's functions and their complex quasiparticle spectrum rather than by…