Two-nucleon emitters within a pseudostate approach

Abstract

A method to identify and characterize three-body resonances in a discrete basis is discussed in the context of two-nucleon emitters. For this purpose, a resonance operator is introduced and diagonalized in a basis of energy pseudostates within the hyperspherical formalism. Then, the energy and width of the resonance are obtained from its time dependence. The approach is illustrated for ${}^{16}$Be (${}^{14}\text{Be}+n+n$).

Comments: 4 pages, 2 figures; proceedings of the FB22 international conference (amended references)