Skyrmion Physics in Bose-Einstein Ferromagnets
U. Al Khawaja, H. T. C. Stoof
Abstract
We show that a ferromagnetic Bose-Einstein condensate has not only line-like vortex excitations, but in general also allows for point-like topological excitations, i.e., skyrmions. We discuss the thermodynamic stability and the dynamic properties of these skyrmions for both spin-1/2 and ferromagnetic spin-1 Bose gases.
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