DYNAMICS OF MOVING AND SPINNING SKYRMIONS

We study the intermediate- and long-range forces between moving and sp inning Skyrmions, employing two different methods. One uses a relativi sed product ansatz for the Skyrme fields, the other models Skyrmions a s triplets of scalar dipoles. The methods lead to the same finite-dime nsional Lagrangian dynamical system which may be interpreted as a poin t-particle approximation to Skyrmion dynamics. We discuss in detail th e dynamics in the so-called attractive channel and the interaction bet ween well-separated and rapidly spinning Skyrmions, and point out the resemblance between the latter and the one-pion exchange potential in nuclear physics.