The effect of pion mass on Skyrme configurationsC. Houghton and S. Magee
School of Mathematics, Trinity College Dublin - Dublin 2, Ireland
received 14 August 2006; accepted in final form 7 November 2006; published January 2007
published online 21 December 2006
In the Skyrme model, atomic nuclei are identified with solitonic configurations. If the pion mass is set to zero, these configurations are spherical shells of energy with a fullerene-like appearance and are well approximated by a simple rational map ansatz. Using simulated annealing, we have calculated minimum energy configurations for non-zero pion mass and have found that they are less round and are less well approximated by the rational map ansatz.
12.39.Dc - Skyrmions .
© Europhysics Letters Association 2007