241 citations · 570 across the 6 of their papers we have counts for
6 papers
Non-Hermitian Boundary State Distillation with Lossy Waveguides
Walid Cherifi, Johan Carlström, Mohamed Bourennane +1
The hallmark of topological phases is their exotic boundary states. In a series of remarkable experiments it has been shown that classical analogues of these states can be engineer…
Correlations in non-Hermitian systems and Diagram techniques for the steady state
Johan Carlström
We describe a diagrammatic technique for non-Hermitian fermionic systems that is applicable in the steady state, and which allows addressing correlations effects by systematic expa…
Knotted Non-Hermitian Metals
Johan Carlström, Marcus Stålhammar, Jan Carl Budich +1
We report on the occurrence of knotted metallic band structures as stable topological phases in non-Hermitian (NH) systems. These knotted NH metals are characterized by open Fermi…
Symmetry-protected nodal phases in non-Hermitian systems
Jan Carl Budich, Johan Carlström, Flore K. Kunst +1
Non-Hermitian (NH) Hamiltonians have become an important asset for the effective description of various physical systems that are subject to dissipation. Motivated by recent experi…
Exceptional Links and Twisted Fermi Ribbons in non-Hermitian Systems
Johan Carlström, Emil J. Bergholtz
The generic nature of band touching points in three-dimensional band structures is at heart of the rich phenomenology, topological stability and novel Fermi arc surface states asso…
Strongly Interacting Weyl Semimetals: Stability of the Semimetallic Phase and Emergence of Almost Free Fermions
Johan Carlström, Emil J. Bergholtz
Using a combination of analytical arguments and state-of-the-art diagrammatic Monte Carlo simulations we show that the corrections to the dispersion in interacting Weyl semimetals…