Abstract

The manifestation of exceptional points in the scattering continuum of an atomic nucleus is studied using the real-energy continuum shell model. It is shown that low-energy exceptional points appear for realistic values of coupling to the continuum and, hence, could be accessible experimentally. Experimental signatures are proposed which include the jump by $2\ensuremath{\pi}$ of the elastic scattering phase shift and a salient energy dependence of cross sections in the vicinity of the exceptional point.

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