Abstract
We study the nonexistence and rigidity of an important class of particular cases of trapped submanifolds, more precisely, n-dimensional spacelike mean curvature flow solitons related to the closed conformal timelike vector field \(\mathcal K=f(t)\partial _t\) (\(t\in I\subset \mathbb R\)) which is globally defined on an \((n+p+1)\)-dimensional generalized Robertson–Walker (GRW) spacetime \(-I\times _fM^{n+p}\) with warping function \(f\in C^\infty (I)\) and Riemannian fiber \(M^{n+p}\), via applications of suitable generalized maximum principles and under certain constraints on f and on the curvatures of \(M^{n+p}\). In codimension 1, we also obtain new Calabi–Bernstein-type results concerning the spacelike mean curvature flow soliton equation in a GRW spacetime.
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Acknowledgements
The authors would like to thank the referee for his/her valuable suggestions and useful comments to improve the paper. The first and second authors have been partially supported by Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq), of the Ministry of Science, Technology and Innovation of Brazil, Grants 316080/2021-7 and 301970/2019-0, respectively. The first, third and fourth authors are partially supported by Paraíba State Research Foundation (FAPESQ), Brazil, Grant 3025/2021. The first author has also been partially funded by the public call n. 03 Produtividade em Pesquisa PROPESQ/PRPG/UFPB, proposal code PIA13495-2020, and Programa Primeiros Projetos Grant 2021/3175, Paraíba State Research Foundation (FAPESQ).
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Freitas, A., de Lima, H.F., Santos, M.S. et al. Nonexistence and rigidity of spacelike mean curvature flow solitons immersed in a GRW spacetime. Ann Glob Anal Geom 63, 2 (2023). https://doi.org/10.1007/s10455-022-09879-5
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DOI: https://doi.org/10.1007/s10455-022-09879-5
Keywords
- Generalized Robertson–Walker spacetimes
- Spacelike mean curvature flow solitons
- Trapped submanifolds
- Higher-order mean curvatures