Pauli energy contribution to nucleus-nucleus interaction

TL;DR

This paper explores how the Pauli exclusion principle affects nuclear interaction potentials using advanced theoretical methods, revealing repulsive effects at short distances and the influence of isovector contributions on fusion dynamics.

Contribution

It introduces the application of the novel Frozen-Hartree-Fock technique and combines it with DC-TDHF to analyze Pauli effects and isovector contributions in nuclear potentials.

Findings

Pauli exclusion causes noticeable short-range repulsion.

Isovector effects modify the inner part of the nuclear potential.

Dynamic phenomena like nucleon transfer influence fusion potentials.

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.