A Lagrangian view on complete integrability of the conservative Camassa– Holm flow
Journal article, Peer reviewed
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OriginalversjonJournal of Integrable Systems. 2017, 2 (1), 1-14. 10.1093/integr/xyx002
We show how the change from Eulerian to Lagrangian coordinates for the two-component Camassa–Holm system can be understood in terms of certain reparametrizations of the underlying isospectral problem. The respective coordinates correspond to different normalizations of an associated first order system. In particular, we will see that the two-component Camassa–Holm system in Lagrangian variables is completely integrable as well.