New studies and predictions for nuclear reactions in the extit{ab initio} symmetry-adapted framework

Recent advances in low-energy nuclear physics have opened several possibilities to unify nuclear structure and reaction dynamics.

Various promising approaches, such as deriving effective optical potentials from microscopic calculations or using fully microscopic coupled-channel formalism, continue to be explored.

Combined with first-principles calculations, these developments are enabling unprecedented insights into the atomic nuclei, especially those near drip lines, with far reaching consequences for nuclear astrophysics.

While first-principles calculations offer reliable predictions but are constrained to few-particle systems, the Symmetry-Adapted No Core Shell Model (SA-NCSM) tackles this limitation.

Leveraging near-perfect symmetries key to collective nuclear phenomena like deformation and vibrations, SA-NCSM employs a tailored basis to extend ab initio studies to nuclei as complex as those in the calcium region.

In this talk, I will introduce how SA-NCSM is playing a major role in unifying nuclear structure and reactions, and how it contributes to the advancement of first-principles microscopic approaches to nuclear reactions.

The discussion will particularly focus on the employment of ab initio symmetry-adapted wave functions to capture the internal structure of the reaction components.

I will showcase calculations of effective nucleon-nucleus "optical" potentials using Green's function formalism for reactions involving light nuclei.

Additionally, I will introduce a coupled-channel framework, reformulated within the SA-NCSM basis, as an initial step toward achieving a comprehensive microscopic approach to nuclear reactions extending to the calcium region.