Integrability and conformal symmetry in higher dimensions: A model with exact hopfion solutions
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Springer Nature
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We use ideas on integrability in higher dimensions to define Lorentz invariant field theories with an infinite number of local conserved currents. The models considered have a two-dimensional target space. Requiring the existence of lagrangean and the stability of static solutions singles out a class of models which have an additional conformal symmetry. That is used to explain the existence of an ansatz leading to solutions with non-trivial Hopf charges. © SISSA/ISAS 2002.
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Journal of High Energy Physics, v. 6, n. 11, p. 403-428, 2002.
