Nonlinear realizations of $W_3$ symmetry

Ivanov, E.; Krivonos, S.; Pichugin, A.

Nonlinear realizations of $W_3$ symmetry

Authors

Ivanov, E.

Krivonos, S.

Pichugin, A.

Description

We deduce the $sl_{3}$ Toda realization of classical $W_3$ symmetry on two scalar fields in a geometric way, proceeding from a nonlinear realization of some associate higher-spin symmetry $W_{3}^{\infty}$. The Toda equations are recognized as the constraints singling out a two-dimensional fully geodesic subspace in the initial coset space of $W_{3}^{\infty}$. The proposed geometric approach can be extended to other nonlinear algebras and integrable systems.
8 pages