Rolling Skyrmions and the Nuclear Spin-Orbit Force
High Energy Physics - Theory
2018-08-31 v2 Nuclear Theory
Abstract
We compute the nuclear spin-orbit coupling from the Skyrme model. Previous attempts to do this were based on the product ansatz, and as such were limited to a system of two well-separated nuclei. Our calculation utilises a new method, and is applicable to the phenomenologically important situation of a single nucleon orbiting a large nucleus. We find that, to second order in perturbation theory, the coefficient of the spin-orbit coupling induced by pion field interactions has the wrong sign, but as the strength of the pion-nucleon interactions increases the correct sign is recovered non-perturbatively.
Cite
@article{arxiv.1806.07330,
title = {Rolling Skyrmions and the Nuclear Spin-Orbit Force},
author = {Derek Harland and Nicholas S. Manton},
journal= {arXiv preprint arXiv:1806.07330},
year = {2018}
}
Comments
37 pages, 5 figures. v2: discussion of the literature improved, and other minor changes