CMC foliations of open spacetimes asymptotic to open Robertson-Walker spacetimes

Abstract

We consider open globally hyperbolic spacetimes $N$ of dimension $n+1$, $n\ge 3$, which are spatially asymptotic to a Robertson-Walker spacetime or an open Friedmann universe with spatial curvature $\tilde{\kappa }=0,-1$ and prove, under reasonable assumptions, that there exists a unique foliation by hypersurfaces of constant mean curvature and that the mean curvature function $\tau$ is a smooth time function if $N$ is smooth. Moreover, among the Friedmann universes which satisfy the necessary conditions are those that reflect the present assumptions of the development of the universe.

61 pages, v3: Typos corrected and references added. This will be the version to be published in Pure and Applied Mathematics Quarterly

Cited by in corpus (1)

• Mean Curvature, Singularities and Time Functions in Cosmology