7 v 1 5 J an 2 00 0 The Interaction of Two Hopf Solitons
نویسنده
چکیده
This Letter deals with topological solitons in an O(3) sigma model in three space dimensions (with a Skyrme term to stabilize their size). The solitons are classified topologically by their Hopf number N. The N = 2 sector is studied; in particular, for two solitons far apart, there are three " attractive channels ". Viewing the solitons as dipole pairs enables one to predict the force between them. Relaxing in the attractive channels leads to various static 2-soliton solutions.
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