Fano resonances in scattering: an alternative perspective

  • Lukas Schwarz
  • Holger Cartarius
  • Günter Wunner
  • Walter Dieter Heiss
  • Jörg Main
Regular Article

DOI: 10.1140/epjd/e2015-60202-9

Cite this article as:
Schwarz, L., Cartarius, H., Wunner, G. et al. Eur. Phys. J. D (2015) 69: 196. doi:10.1140/epjd/e2015-60202-9

Abstract

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 first order poles in the vicinity of the exceptional point, gives rise to asymmetric scattering cross section profiles. In the present paper we demonstrate that these line profiles are indeed well described by the Beutler-Fano formula, and thus are genuine Fano resonances. Also further away from the exceptional points excellent agreement can be found by introducing energy dependent Fano parameters.

Graphical abstract

Keywords

Atomic Physics 

Copyright information

© EDP Sciences, SIF, Springer-Verlag Berlin Heidelberg 2015

Authors and Affiliations

  • Lukas Schwarz
    • 1
  • Holger Cartarius
    • 1
  • Günter Wunner
    • 1
  • Walter Dieter Heiss
    • 2
    • 3
  • Jörg Main
    • 1
  1. 1.Institut für Theoretische PhysikUniversität StuttgartStuttgartGermany
  2. 2.Department of PhysicsUniversity of StellenboschMatielandSouth Africa
  3. 3.National Institute for Theoretical Physics (NITheP)Western CapeSouth Africa