Static Properties of the Skyrmion.
In the 1960's, T.H.R Skyrme developed a mathematical model in which baryons are considered as solitons in a non-linear sigma model of pion interactions. The solitonic solutions of the non-linear Euler Lagrange equations are also known as skyrmions. We have derived the mass of a static skyrmion and have numerically solved for the profile function in the hedgehog ansatz.
Liang, Calvin, " Static Properties of the Skyrmion." (1999). URC Student Scholarship.