Fano resonances in scattering: an alternative perspective

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.

4 pages, 3 figures, 3 tables, additional references

References in corpus (3)

• The physics of exceptional points
• Probing decoherence through Fano resonances
• Fano-Feshbach resonances in two-channel scattering around exceptional points

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• Vortices in Bose-Einstein condensates with $\mathcal{P}\mathcal{T}$-symmetric gain and loss
• Topological edge states in the Su-Schrieffer-Heeger model subject to balanced particle gain and loss
• Purity oscillations in coupled Bose-Einstein condensates