Green's Function Monte Carlo Calculations with Two- and Three-Nucleon Interactions from Chiral Effective Field Theory

TL;DR

This paper presents Green's function Monte Carlo calculations of light nuclei using chiral effective field theory interactions, including two- and three-nucleon forces at N$^2$LO, advancing ab initio nuclear modeling.

Contribution

It introduces the inclusion of consistent three-nucleon forces at N$^2$LO in GFMC calculations with chiral EFT, extending previous two-nucleon interaction studies.

Findings

Successful calculation of light nuclei properties with 3N forces

Determination of low-energy constants for 3N interactions

Extension of GFMC methods to include chiral EFT 3N forces

Abstract

I discuss our recent work on Green's function Monte Carlo (GFMC) calculations of light nuclei using local nucleon-nucleon interactions derived from chiral effective field theory (EFT) up to next-to-next-to-leading order (N$^2$LO). I present the natural extension of this work to include the consistent three-nucleon (3N) forces at the same order in the chiral expansion. I discuss our choice of observables to fit the two low-energy constants which enter in the 3N sector at N$^2$LO and present some results for light nuclei.