3D van der Waals sigma-model and topological excitations with logarithmic energy
High Energy Physics - Theory
2007-05-23 v1 Condensed Matter
Abstract
The 3D vector van der Waals (or conformal) nonlinear sigma-model is proposed. It is shown that it has the "hedgehog"-like topological excitations with logarithmic energy. Their "neutral" configurations have nontrivial topological structures described by Hopf invariant. A possible influence of these excitations on the properties of the model are discussed.
Keywords
Cite
@article{arxiv.hep-th/9909023,
title = {3D van der Waals sigma-model and topological excitations with logarithmic energy},
author = {S. A. Bulgadaev},
journal= {arXiv preprint arXiv:hep-th/9909023},
year = {2007}
}
Comments
14 pages, a talk given at seminar "Properties and Dynamics of Liquid Crystals", 23 August, MPIPKS, Dresden, Germany