Abstract
We study constant mean curvature spacelike hypersurfaces in generalized Robertson–Walker spacetimes \(\overline{M}= I \times _f F\) which are spatially parabolic (i.e. its fiber F is a (non-compact) complete Riemannian parabolic manifold) and satisfy the null convergence condition. In particular, we provide several rigidity results under appropriate mathematical and physical assumptions. We pay special attention to the case where the GRW spacetime is Einstein. As an application, some Calabi–Bernstein type results are given.
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Acknowledgments
The Juan A. Aledo is partially supported by the Spanish MICINN Grant with FEDER funds MTM2013-43970-P and by the Junta de Comunidades de Castilla-La Mancha Grant PEII-2014-001-A. The Rafael M. Rubio and Juan J. Salamanca are partially supported by the Spanish MICINN Grant with FEDER funds MTM2013-47828-C2-1-P.
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Aledo, J.A., Rubio, R.M. & Salamanca, J.J. Complete spacelike hypersurfaces in generalized Robertson–Walker and the null convergence condition: Calabi–Bernstein problems. RACSAM 111, 115–128 (2017). https://doi.org/10.1007/s13398-016-0277-3
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DOI: https://doi.org/10.1007/s13398-016-0277-3
Keywords
- Spacelike hypersurface
- Constant mean curvature
- Generalized Robertson Walker spacetime
- Null convergence condition
- Spatially parabolic spacetime
- Calabi–Bernstein problem