A volumetric Penrose inequality for conformally flat manifolds

Details A volumetric Penrose inequality for conformally flat manifolds A volumetric Penrose inequality for conformally flat manifolds

2010-09-08

arxiv.org/abs/1009.1587v3

Annales Henri Poincare 12:67-76,2011

Mathematics

Differential Geometry

7 pages

Scientific paper

10.1007/s00023-010-0070-3

We consider asymptotically flat Riemannian manifolds with nonnegative scalar curvature that are conformal to $\R^{n}\setminus \Omega, n\ge 3$, and so that their boundary is a minimal hypersurface. (Here, $\Omega\subset \R^{n}$ is open bounded with smooth mean-convex boundary.) We prove that the ADM mass of any such manifold is bounded below by $(V/\beta_{n})^{(n-2)/n}$, where $V$ is the Euclidean volume of $\Omega$ and $\beta_{n}$ is the volume of the Euclidean unit $n$-ball. This gives a partial proof to a conjecture of Bray and Iga \cite{brayiga}. Surprisingly, we do not require the boundary to be outermost.

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