A model for Hopfions on the space-time S^3 x R
arXiv:hep-th/0406244 · doi:10.1063/1.1829911
Abstract
We construct static and time dependent exact soliton solutions for a theory of scalar fields taking values on a wide class of two dimensional target spaces, and defined on the four dimensional space-time S^3 x R. The construction is based on an ansatz built out of special coordinates on S^3. The requirement for finite energy introduces boundary conditions that determine an infinite discrete spectrum of frequencies for the oscillating solutions. For the case where the target space is the sphere S^2, we obtain static soliton solutions with non-trivial Hopf topological charges. In addition, such hopfions can oscillate in time, preserving their topological Hopf charge, with any of the frequencies belonging to that infinite discrete spectrum.
arXiv commentEnlarged version with the time-dependent solutions explicitly given. One reference and two eps figures added. 14 pages, latex
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