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Fano resonances in scattering: an alternative perspective

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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.

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Authors and Affiliations

  1. Institut für Theoretische Physik, Universität Stuttgart, Pfaffenwaldring 57, 70569, Stuttgart, Germany

    Lukas Schwarz, Holger Cartarius, Günter Wunner & Jörg Main

  2. Department of Physics, University of Stellenbosch, 7602, Matieland, South Africa

    Walter Dieter Heiss

  3. National Institute for Theoretical Physics (NITheP), Western Cape, South Africa

    Walter Dieter Heiss

Authors
  1. Lukas Schwarz
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  2. Holger Cartarius
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  3. Günter Wunner
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  4. Walter Dieter Heiss
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  5. Jörg Main
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Correspondence to Walter Dieter Heiss.

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Schwarz, L., Cartarius, H., Wunner, G. et al. Fano resonances in scattering: an alternative perspective. Eur. Phys. J. D 69, 196 (2015). https://doi.org/10.1140/epjd/e2015-60202-9

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  • DOI: https://doi.org/10.1140/epjd/e2015-60202-9

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