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Smooth stationary water waves with exponentially localized vorticity

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arxiv 1907.07335 v2 pith:HBIGKTKK submitted 2019-07-17 math.AP

Smooth stationary water waves with exponentially localized vorticity

classification math.AP
keywords waterwavesequationsexponentiallylocalizedsolutionsstationaryvorticity
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We study stationary capillary-gravity waves in a two-dimensional body of water that rests above a flat ocean bed and below vacuum. This system is described by the Euler equations with a free surface. Our main result states that there exist large families of such waves that carry finite energy and exhibit an exponentially localized distribution of (nontrivial) vorticity. This is accomplished by combining ideas drawn from the theory of spike-layer solutions to singularly perturbed elliptic equations, with techniques from the study of steady solutions of the water wave problem.

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