Three-nucleon force effects and uncertainties in ab initio nuclear reactions

Modern simulations of nuclear reactions and clustering phenomena rely on nucleon-nucleon and three-nucleon (3N) interactions vetted at the highest possible degree. Especially for first-principle calculations of astrophysically relevant reactions, the fine details of the nuclear interaction are integral in obtaining precise and accurate cross sections and other observables. In this talk we will discuss the effects of the 3N part of the nuclear interaction on such calculations using the no-core shell model with continuum (NCSMC) method. Results on quantifying uncertainties of 3N forces on various systems will be presented, focusing on both the parametric uncertainties, as well as physical ones.