Abstract
Our purpose in this paper is to study some geometric properties of spacelike hypersurfaces immersed into a pp-wave spacetime, namely, a connected Lorentzian manifold admitting a parallel lightlike vector field. Initially, by applying a new form of maximum principle for smooth functions on a complete noncompact Riemannian manifold, we obtain sufficient conditions which guarantee that a complete noncompact spacelike hypersurface with polynomial volume growth is either totally geodesic, maximal or 1-maximal. As a consequence, we establish nonexistence results concerning such spacelike hypersurfaces. Next, using a weak form of the Omori–Yau maximum principle, we get uniqueness and nonexistence results for stochastically complete spacelike hypersurface with constant mean curvature. Finally, we establish the notion of spacelike mean curvature flow soliton in pp-wave spacetimes and we provide some geometric conditions that allow us to guarantee how close a complete spacelike mean curvature flow soliton is to a totally geodesic immersion.
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Acknowledgements
The authors would like to thank the referee for reading the manuscript in great detail and for his/her valuable suggestions and useful comments which improved the paper.
Funding
The first author is partially supported by CNPq, Brazil, grant 304891/2021-5. The second author is partially supported by CNPq, Brazil, grant 301970/2019-0. The third author is partially supported by CAPES, Brazil.
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Velásquez, M.A.L., de Lima, H.F. & de Lacerda, J.H.H. Spacelike mean curvature flow solitons, polynomial volume growth and stochastic completeness of spacelike hypersurfaces immersed into pp-vave spacetimes. Collect. Math. 75, 189–211 (2024). https://doi.org/10.1007/s13348-022-00384-3
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DOI: https://doi.org/10.1007/s13348-022-00384-3
Keywords
- pp-Wave spacetimes
- Complete noncompact spacelike hypersurfaces
- Polynomial volume growth
- Stochastically completeness
- Spacelike mean curvature flow solitons