47 citations · 192 across the 11 of their papers we have counts for
3 papers · 1 filter
symmetry-protected exceptional cones and analogue Hawking radiation
Marcus Stålhammar, Jorge Larana-Aragon, Lukas Rødland +1
Non-Hermitian Hamiltonians, which effectively describe dissipative systems, and analogue gravity models, which simulate properties of gravitational objects, comprise seemingly diff…
Classification of Exceptional Nodal Topologies Protected by Symmetry
Marcus Stålhammar, Emil J. Bergholtz
Exceptional degeneracies, at which both eigenvalues and eigenvectors coalesce, and parity-time () symmetry, reflecting balanced gain and loss in photonic systems, are…
On the Electromagnetic Response of Topological Superconductors
Marcus Stålhammar, Michael Stone, Masatoshi Sato +1
We resolve several puzzles related to the electromagnetic response of topological superconductors in 3+1 dimensions. In particular we show by an analytical calculation that the int…