New Perspectives with the Nonlocal Dispersive Optical Model

Mack Atkinson, Dept. of Physics, Washington University
December 8, 2017 at 12:00 pm
241 Compton
Event Description 

The best way to probe a nucleus is through scattering experiments. The nonlocal dispersive optical model (DOM) uses such experimental data to constrain the nucleon self-energy of a particular nucleus. Solving the Dyson equation using the parametrized self-energy yields the one-particle Green's function of the nucleus, from which many interesting observables can be calculated. Currently, such DOM self-energies have been obtained for 40Ca and 48Ca, and I will discuss the various ways these self-energies are used to calculate proton knockout (e,e'p) cross sections, (d,p)and (p,d) cross sections, and charge exchange (p,n) reactions. Additionally, the Green's function provides access to the neutron and proton distributions as well as the energy density. The link between the particle distributions and the energy density is investigated through an analysis of the neutron skin. Lastly, I will discuss the results of my venture into implementing a new DOM fitting algorithm using cloud computing.