Critical well-posedness for the 2D Peskin problem with general tension

Abstract

In this paper, we study the two dimensional Peskin problem with general elasticity law. Specifically, we prove global regularity for small perturbations, in suitable critical spaces, of the circle solution, possibly containing corners. For such initial data we prove asymptotic stability in the sense that as $t\to \infty$, the solution converges to a translated and rotated disk.