Hopf Solitons on the Lattice

Details Hopf Solitons on the Lattice Hopf Solitons on the Lattice

2005-12-02

arxiv.org/abs/hep-th/0512024v1

J.Phys. A39 (2006) L105-L109

Physics

High Energy Physics

High Energy Physics - Theory

8 pages, 2 eps figures

Scientific paper

10.1088/0305-4470/39/4/L05

Hopf solitons in the Skyrme-Faddeev model -- S^2-valued fields on R^3 with Skyrme dynamics -- are string-like topological solitons. In this Letter, we investigate the analogous lattice objects, for S^2-valued fields on the cubic lattice Z^3 with a nearest-neighbour interaction. For suitable choices of the interaction, topological solitons exist on the lattice. Their appearance is remarkably similar to that of their continuum counterparts, and they exhibit the same power-law relation E \approx c H^{3/4} between the energy E and the Hopf number H.

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