Deformation of the scalar curvature and the mean curvature
arXiv:2008.11893
Abstract
On a compact manifold with boundary , we study the problem of prescribing the scalar curvature in and the mean curvature on the boundary simultaneously. To do this, we introduce the notion of singular metric, which is inspired by the early work of Fischer-Marsden in [18] and Lin-Yuan in [23] for closed manifold. We show that we can prescribe the scalar curvature and the mean curvature simultaneously for generic scalar-flat manifolds with minimal boundary. We also prove some rigidity results for the flat manifolds with totally geodesic boundary.
15 pages