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Skyrmions in models with pions and rho mesons

Naya, Carlos; Sutcliffe, Paul

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Carlos Naya


A problem with the standard Skyrme model is that Skyrmion binding energies are around 15%, being much larger than the order 1% binding energies of the nuclei that they aim to describe. Here we consider theories that extend the standard Skyrme model of pions by including rho mesons, via dimensional deconstruction of Yang-Mills theory with an extra dimension. We report the first results of parallel numerical computations of multi-Skyrmions in theories of this type, including a model that reduces Skyrmion energies below those of the standard Skyrme model whilst retaining exactly the same Faddeev-Bogomolny energy bound. We compute all Skyrmions with baryons numbers up to 12 and find that the inclusion of rho mesons reduces binding energies to less than 4%, and therefore moves Skyrmion theory closer to experimental data. Furthermore, we find that this dramatic reduction in binding energies is obtained without changing the qualitative features of the Skyrmions, such as their symmetries.


Naya, C., & Sutcliffe, P. (2018). Skyrmions in models with pions and rho mesons. Journal of High Energy Physics, 2018(5), Article 174.

Journal Article Type Article
Acceptance Date May 24, 2018
Online Publication Date May 28, 2018
Publication Date May 28, 2018
Deposit Date Jun 4, 2018
Publicly Available Date Jun 5, 2018
Journal Journal of High Energy Physics
Print ISSN 1126-6708
Publisher Scuola Internazionale Superiore di Studi Avanzati (SISSA)
Peer Reviewed Peer Reviewed
Volume 2018
Issue 5
Article Number 174


Published Journal Article (648 Kb)

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Copyright Statement
This article is distributed under the terms of the Creative Commons
Attribution License (CC-BY 4.0), which permits any use, distribution and reproduction in
any medium, provided the original author(s) and source are credited.

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