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arXiv · 1512.03956

Real-valued algebro-geometric solutions of the two-component Camassa-Holm hierarchy

Jonathan Eckhardt·Fritz Gesztesy·Helge Holden·Aleksey Kostenko·Gerald Teschl
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Abstract

We provide a construction of the two-component Camassa-Holm (CH-2) hierarchy employing a new zero-curvature formalism and identify and describe in detail the isospectral set associated to all real-valued, smooth, and bounded algebro-geometric solutions of the $n$th equation of the stationary CH-2 hierarchy as the real $n$-dimensional torus $\mathbb{T}^n$. We employ Dubrovin-type equations for auxiliary divisors and certain aspects of direct and inverse spectral theory for self-adjoint singular Hamiltonian systems. In particular, we employ Weyl-Titchmarsh theory for singular (canonical) Hamiltonian systems. While we focus primarily on the case of stationary algebro-geometric CH-2 solutions, we note that the time-dependent case subordinates to the stationary one with respect to isospectral torus questions.

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Jonathan Eckhardt, Fritz Gesztesy, Helge Holden, Aleksey Kostenko, Gerald Teschl. 2015-12-12. Real-valued algebro-geometric solutions of the two-component Camassa-Holm hierarchy. https://doi.org/10.5802/aif.3107

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