Abstract
We have derived the hierarchy of soliton equations associated with the untwisted affine Kac-Moody algebra D (1)4 by calculating the corresponding recursion operators. The Hamiltonian formulation of the equations from the hierarchy is also considered. As an example we have explicitly presented the first non-trivial member of the hierarchy, which is an one-parameter family of mKdV equations. We have also considered the spectral properties of the Lax operator and introduced a minimal set of scattering data.
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Gerdjikov, V.S., Mladenov, D.M., Stefanov, A.A. et al. Soliton equations related to the affine Kac-Moody algebra D (1)4 . Eur. Phys. J. Plus 130, 106 (2015). https://doi.org/10.1140/epjp/i2015-15106-5
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DOI: https://doi.org/10.1140/epjp/i2015-15106-5