Description of fission: first comparison between microscopic and macroscopic-microscopic Potential Energy Surfaces

The description of the fission process is challenging and has two modern interpretations: on one hand, the microscopic approaches and on the other hand, the macroscopic-microscopic approaches. From the perspective of macroscopic- microscopic approaches, the nucleus is treated as a macroscopic system in a first place, and microscopic corrections are then added. From the perspective of microscopic approaches, the focus is on the direct resolution of the quantum A-body problem with a 2-body interaction between the nucleons as the only ingredient. In this contribution, we compare these two approaches for the first time by analyzing the differences in both formalism as well as by a comparison of the different valleys in the potential energy surfaces (PES), with a focus on the 240 Pu.