On the gravity-capillary water waves with point vortices

Abstract

We consider the two-dimensional deep gravity-capillary water waves with point vortices. We first formulate the question in the holomorphic coordinates. Then, we derive an a priori energy estimate for water waves, and show that the water wave system has a unique solution for initial data in $\mathcal{H}^s\times \Omega_t^N$, $s>\frac{3}{2}$. Finally, we show that if there are only two vortices, and vortices, initial velocity, and initial surfaces are symmetric with respect to the vertical axis, then the solution of pure capillary water waves with two point vortices has an extended cubic lifespan.