Quantum Monte Carlo Calculations of Neutron-α Scattering with Chiral Three-Body Forces

An open problem in nuclear physics is to understand the role many-nucleon forces play in nuclei and nuclear reactions. It is well known that a two-nucleon force is not enough to describe the binding and spectra of light nuclei, three-nucleon (3N) forces are needed. To examine the effect of 3N forces, we need a nuclear system which is sensitive to the 3N force, and a microscopic solution to the many-body Schrodinger equation. Recent activity in the field has shown that elastic neutron-α scattering is sensitive to the spin-orbit splitting caused by the 3N force, making it an ideal system for study. I will present ab initio calculations of low-energy neutron-α scattering phase shifts done within the Quantum Monte Carlo framework using the Norfolk suite of chiral interactions. By using interactions which are fit to different experimental observables, we investigate the impact low-energy constants have on the predicted phase shifts.