Acta Physica Polonica B

Vol. 35, No. 10, October 2004, page 2367


Nested Multi-Soliton Solutions with Arbitrary Hopf Index

A. Wereszczynski

Generalized Aratyn--Ferreira--Zimerman O(3) nonlinear sigma model with a particular symmetry breaking term, so-called dielectric function, is discussed. Static multi-soliton configurations with finite energy and nontrivial Hopf index are found. We show that such configurations consist of nested toroidal solitons. Moreover, nontrivial sphaleron-like solutions i.e. configurations with zero total topological charge are also presented.

PACS numbers: 11.10.Lm, 05.45.Yv


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