Orateur
Description
A quantitative and predictive description of nuclear reactions requires a coherent treatment of nuclear interactions, many-body correlations, and reaction dynamics within a unified computational framework. In this talk, the ongoing developments of the PAN@CEA collaboration toward such an integrated A-body approach will be presented. The end goal is the design of a single, extensible code meant to consistently address nuclear structure and reactions. I will first detail the modular architecture of the structure solver, which allows for the use of a wide range of nuclear interactions—including valence-space interactions, chiral EFT interactions, and phenomenological energy density functionals such as Gogny and Skyrme—within a common numerical framework. Calculations can be performed in both harmonic-oscillator and Bessel bases, and support mean-field and beyond-mean-field approaches under spherical, axial, and triaxial symmetries, with optional breaking of parity and isospin symmetry. This flexibility enables systematic comparisons between interactions and many-body approximations while preserving a coherent treatment of symmetries and correlations. This structure module is designed to interface directly with optical-model reaction solvers, including calculable R-matrix and Lippmann–Schwinger approaches, enabling a consistent treatment of direct reactions. Extensions toward inelastic scattering and more general reaction channels are part of the ongoing development of the PAN@CEA framework.
