Peaked Stokes waves as solutions of Babenko's equation
Abstract
Babenko's equation describes traveling water waves in holomorphic
coordinates. It has been used in the past to obtain properties of Stokes waves
with smooth profiles analytically and numerically. We show in the deep-water
limit that properties of Stokes waves with peaked profiles can also be
recovered from the same Babenko's equation. In order to develop the local
analysis of singularities, we rewrite Babenko's equation as a fixed-point
problem near the maximal elevation level. As a by-product, our results rule out
a corner point singularity in the holomorphic coordinates, which has been
obtained in a local version of Babenko's equation.