241 citations · 570 across the 6 of their papers we have counts for
4 papers · 1 filter
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…