Anisotropic mean curvature type flow and capillary Alexandrov-Fenchel inequalities

In this paper, an anisotropic volume-preserving mean curvature type flow for star-shaped anisotropic ₀-capillary hypersurfaces in the half-space is studied, and the long-time existence and smooth convergence to a capillary Wulff shape are obtained. If the initial hypersurface is strictly convex and Wulff shape satisfies a mild condition, the solution of this flow remains to be strictly convex for all t>0 by adopting a new approach applicable to anisotropic capillary setting. Furthermore, we define some suitable quermassintegrals for anisotropic capillary hypersurfaces, which satisfy some monotonicity results along the flow. As applications, we establish an anisotropic capillary isoperimetric inequality for star-shaped anisotropic capillary hypersurfaces and a family of new Alexandrov-Fenchel inequalities for strictly convex anisotropic capillary hypersurfaces.