Symmetries and exact solutions of the BPS Skyrme model

TL;DR

This paper investigates the classical symmetries of the BPS Skyrme model, enabling the construction of soliton solutions with specific shapes, which enhances its applicability to nuclear physics.

Contribution

It analyzes the symmetries of the BPS Skyrme model and uses them to generate soliton solutions with desired shapes, advancing the model's relevance to strong interaction physics.

Findings

Identified the symmetry group of the BPS Skyrme model.

Constructed shape-specific soliton solutions.

Enhanced the model's applicability to nuclear physics.

Abstract

The BPS Skyrme model is a specific subclass of Skyrme-type field theories which possesses both a BPS bound and infinitely many soliton solutions (skyrmions) saturating that bound, a property that makes the model a very convenient first approximation to the study of some properties of nuclei and hadrons. A related property, the existence of a large group of symmetry transformations, allows for solutions of rather general shapes, among which some of them will be relevant to the description of physical nuclei. We study here the classical symmetries of the BPS Skyrme model, applying them to construct soliton solutions with some prescribed shapes, what constitutes a further important step for the reliable application of the model to strong interaction physics.