64 citations · 143 across the 6 of their papers we have counts for
6 papers
Chiral behaviour for three wave guides at an exceptional point of third order
WD Heiss, G Wunner
A simple matrix model that has been used to describe essential features of a PT symmetric set-up of three coupled wave guides is investigated. The emphasis of the study lies on the…
-symmetric wave guide system with evidence of a third-order exceptional point
Jan Schnabel, Holger Cartarius, Jörg Main +2
An experimental setup of three coupled -symmetric wave guides showing the characteristics of a third-order exceptional point (EP3) has been investigated in an idealiz…
Fano resonances in scattering: an alternative perspective
Lukas Schwarz, Holger Cartarius, Günter Wunner +2
In a previous paper it has been shown that the interference of the first and second order pole of the Green's function at an exceptional point, as well as the interference of the f…
Fano-Feshbach resonances in two-channel scattering around exceptional points
W D Heiss, G Wunner
It is well known that in open quantum systems resonances can coalesce at an exceptional point, where both the energies {\em and} the wave functions coincide. In contrast to the usu…
Time behaviour near to spectral singularities
WD Heiss
Spectral singularities such as exceptional points invoke specific physical effects. The present paper focuses upon the time dependent solutions of the Schrödinger equation. In a si…
Time scales in nuclear giant resonances
WD Heiss, RG Nazmitdinov, FD Smit
We propose a general approach to characterise fluctuations of measured cross sections of nuclear giant resonances. Simulated cross sections are obtained from a particular, yet repr…