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Existence of maximal hypersurfaces in some spherically symmetric spacetimes

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We prove that the maximal development of any spherically symmetric spacetime with collisionless matter (obeying the Vlasov equation) or a massless scalar field (obeying the massless wave equation) and possessing a constant mean curvature Cauchy surface also contains a maximal Cauchy surface. Combining this with previous results establishes that the spacetime can be foliated by constant mean curvature Cauchy surfaces with the mean curvature taking on all real values, thereby showing that these spacetimes satisfy the closed-universe recollapse conjecture. A key element of the proof, of interest in itself, is a bound for the volume of any Cauchy surface in any spacetime satisfying the timelike convergence condition in terms of the volume and mean curvature of a fixed Cauchy surface and the maximal distance between and . In particular, this shows that any globally hyperbolic spacetime having a finite lifetime and obeying the timelike-convergence condition cannot attain an arbitrarily large spatial volume.

Document Type: Miscellaneous

Affiliations: 1: Department of Physics, University of Florida, Gainesville, FL 32611, USA 2: Institut des Hautes Etudes Scientifiques, 35 Route de Chartres, 91440 Bures sur Yvette, France

Publication date: January 1, 1996


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