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- W2965617152 abstract "In this work, we try to obtain a stable Lemaitre-Tolman-Bondi (LTB) static universe, which is spherically symmetric and radially inhomogeneous. However, this is not an easy task, and fails in general relativity (GR) and various modified gravity theories, because the corresponding LTB static universes must reduce to the Friedmann-Robertson-Walker (FRW) static universes. We find a way out in a new type of modified gravity theory, in which the conservation of energy and momentum is broken. In this work, we have proposed a novel modification to the original Rastall gravity. In some sense, our Rastall-like gravity is essentially different from GR and the original Rastall gravity. In this Rastall-like gravity, LTB static solutions have been found. The stability of LTB static universe against both the homogeneous and the inhomogeneous scalar perturbations is also discussed in details. We show that a LTB static universe can be stable in this Rastall-like gravity." @default.
- W2965617152 created "2019-08-13" @default.
- W2965617152 creator A5003573741 @default.
- W2965617152 creator A5043011100 @default.
- W2965617152 creator A5070394261 @default.
- W2965617152 date "2020-11-01" @default.
- W2965617152 modified "2023-10-08" @default.
- W2965617152 title "Lemaître-Tolman-Bondi static universe in Rastall-like gravity" @default.
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- W2965617152 doi "https://doi.org/10.1016/j.nuclphysb.2020.115179" @default.
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