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- W4309001626 abstract "Discrepancies between observations at early and late cosmic epochs, and the vacuum energy problem associated with the interpretation of cosmological constant, are questioning the $Lambda$CDM model. Motivated by these conceptual and observational facts, extensions of Einstein's gravity are recently intensively considered in view of curing unsolved issues suffered by General Relativity at ultraviolet and infrared scales. Here, we provide a short overview of some aspects of $f(R)$ gravity, focusing, in particular, on cosmological applications. Specifically, Noether symmetries are adopted as a criterion to select viable models and investigate the corresponding dynamics. We thus find solutions to the cosmological field equations, analyzing the behaviour of selected models from the matter-dominated to the present epoch. Moreover, constraints coming from energy conditions and the so-called swampland criteria are also considered. In particular, we qualitatively discuss the possibility of $f(R)$ gravity to account for fixing cosmic tensions." @default.
- W4309001626 created "2022-11-20" @default.
- W4309001626 creator A5074224919 @default.
- W4309001626 creator A5076706548 @default.
- W4309001626 creator A5081008549 @default.
- W4309001626 creator A5081249574 @default.
- W4309001626 creator A5089041768 @default.
- W4309001626 date "2022-11-14" @default.
- W4309001626 modified "2023-10-14" @default.
- W4309001626 title "Early and late time cosmology: the f(R) gravity perspective" @default.
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