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arXiv · hep-th/0406244

A model for Hopfions on the space-time S^3 x R

E. De Carli·L. A. Ferreira
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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.

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E. De Carli, L. A. Ferreira. 2004-10-13. A model for Hopfions on the space-time S^3 x R. https://doi.org/10.1063/1.1829911

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