Pauli energy contribution to nucleus-nucleus interaction

¹ Department of Physics and Astronomy, Vanderbilt University, Nashville, TN 37235, USA
² Facility for Rare Isotope Beams, Michigan State University, East Lansing, Michigan 48824, USA
³ Department of Fundamental and Theoretical Physics and Department of Nuclear Physics and Accelerator Applications, Research School of Physics, The Australian National University, Canberra ACT 2601, Australia

^* e-mail: umar@compsci.cas.vanderbilt.edu
^** e-mail: kylegodbey@gmail.com
^*** e-mail: cedric.simenel@anu.edu.au

Published online: 18 October 2024

Abstract

The investigation delves into understanding how the Pauli exclusion principle influences the bare potential between atomic nuclei through the application of advanced theoretical methodologies. Specifically, the application of the novel Frozen-Hartree-Fock (DCFHF) technique is employed. The resulting potentials demonstrate a noticeable repulsion at short distances, attributed to the effects of the Pauli exclusion principle. To account for dynamic phenomena, such as nucleon transfer processes, the density-constrained time-dependent Hartree-Fock (DC-TDHF) method is utilized. This approach integrates isovector contributions into the potential, shedding light on their influence on fusion reactions. Notably, the inclusion of isovector effects leads to a reduction or enhancement in the inner part of the potential, suggesting a nuanced role of transfer in the fusion process.