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- Title
Near-BPS baby Skyrmions with Gaussian tails.
- Authors
Gudnason, Sven Bjarke; Barsanti, Marco; Bolognesi, Stefano
- Abstract
We consider the baby Skyrme model in a physically motivated limit of reaching the restricted or BPS baby Skyrme model, which is a model that enjoys area-preserving diffeomorphism invariance. The perturbation consists of the kinetic Dirichlet term with a small coefficient ϵ as well as the standard pion mass term, with coefficient ϵ m 1 2 . The pions remain lighter than the soliton for any ϵ and therefore the model is physically acceptable, even in the ϵ → 0 limit. The version of the BPS baby Skyrme model we use has BPS solutions with Gaussian tails. We perform full numerical computations in the ϵ → 0 limit and even reach the strict ϵ = 0 case, finding new nontrivial BPS solutions, for which we do not yet know the analytic form.
- Subjects
SKYRME model; SKYRMIONS; INFANTS; PIONS
- Publication
Journal of High Energy Physics, 2021, Vol 2021, Issue 5, p1
- ISSN
1126-6708
- Publication type
Article
- DOI
10.1007/JHEP05(2021)134