Combining structure and reactions: construction of a microscopic optical potential

Jimmy Rotureau, NSCL
Tuesday, Mar 20, 11:00 AM - Theory Seminar
1200 FRIB Laboratory

Abstract:  The strong coupling to decay/reaction channels is an essential feature of nuclei in the vicinity of the driplines and requires new theoretical developments for the study of these systems far from stability. In reaction models, one usually reduces the many-body picture to a few-body one, where only the most relevant degrees of freedom are retained. In such approaches one introduces effective interactions, the so-called optical potentials, between the clusters considered. Traditionally one uses parametrized interactions constrained by data on β-stable isotopes. The application of these phenomenological potentials to exotic regions of the nuclear chart is unreliable and it is therefore critical for progress in the field of reactions that these effective interactions be connected to the underlying microscopic theory. During this talk, I will show results towards our goal of constructing a nucleon-nucleus microscopic potential using recent chiral-EFT Hamiltonians within the Coupled Cluster approach.