Abstract
The Skyrme model is extended with a sextic derivative term, called the BPS-Skyrme term, and a repulsive potential term, called the loosely bound potential. A large part of the model’s parameter space is studied for the 4-Skyrmion, which corresponds to the helium-4 nucleus, and emphasis is put on preserving as much of the platonic symmetries as possible while reducing the binding energies. We reach classical binding energies for helium-4 as low as 0.2%, while retaining the cubic symmetry of the 4-Skyrmion, and after taking into account the quantum mass correction to the nucleon due to spin/isospin quantization, we get total binding energies as low as 3.6%—still with the cubic symmetry intact.
6 More- Received 7 June 2018
DOI:https://doi.org/10.1103/PhysRevD.98.096018
Published by the American Physical Society under the terms of the Creative Commons Attribution 4.0 International license. Further distribution of this work must maintain attribution to the author(s) and the published article’s title, journal citation, and DOI. Funded by SCOAP3.
Published by the American Physical Society