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How fabulous is Fab 5 cosmology?
Open accessAbstract
Extended gravity origins for cosmic acceleration can solve some fine tuning issues and have useful characteristics, but generally have little to say regarding the cosmological constant problem. Fab 5 gravity can be ghost free and stable, have attractor solutions in the past and future, and possess self tuning that solves the original cosmological constant problem. Here we show however it does not possess all these qualities at the same time. We also demonstrate that the self tuning is so powerful that it not only cancels the cosmological constant but also all other energy density, and we derive the scalings of its approach to a renormalized de Sitter cosmology. While this strong cancellation is bad for the late universe, it greatly eases early universe inflation.
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Appleby et al. (2012) and Linder (2013) argued that Fab Four models fail to provide viable cosmic evolution for whole cosmic history.
“However, it was argued in Appleby et al. (2012) and Linder (2013) that such models fail to provide a viable cosmic evolution for the whole cosmic history.”
From Testing general relativity in cosmology (2019) · cites this paper as Linder 2013
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References 29 · Cited by 24
Research works printed but not linked: 29
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Metadata
- Authors
- Linder, E. V.
- Affiliations
- Lawrence Berkeley National Laboratory (US)
- Corresponding author
- Linder, Eric V
- ORCID
- Linder, Eric V
- Venue
- Journal of Cosmology and Astroparticle Physics
- Publisher
- IOP Publishing
- Published
- 2013-12-13
- Volume
- 2013
- Issue
- 12
- Pages
- 032-032
- ISSN
- 1475-7508 (ISSN-L)
- 1475-7516
- OpenAlex
- W1970505622
- Cited by
- 24
- References
- 29
- Citations by year
- 2023: 3 · 2022: 1 · 2021: 1 · 2020: 2 · 2019: 1 · 2018: 7 · 2017: 1 · 2016: 1 · 2015: 4 · 2014: 2 · 2013: 1
- FWCI
- 1.44
- Type
- journal article
- Language
- en
- Open access
- green
- arxiv.org
- Licence
- Locations
- Journal of Cosmology and Astroparticle Physics (publishedVersion)
- arXiv (Cornell University) (publishedVersion)
- arXiv (Cornell University)
- Topics
- Physical Sciences › Physics and Astronomy › Astronomy and Astrophysics › Cosmology and Gravitation Theories
- Physical Sciences › Physics and Astronomy › Nuclear and High Energy Physics › Noncommutative and Quantum Gravity Theories
- Physical Sciences › Mathematics › Geometry and Topology › Advanced Differential Geometry Research
- Keywords
- extended gravity, cosmic acceleration, cosmological constant problem, self-tuning, attractor solutions, ghost-free gravity, de Sitter cosmology, inflation (cosmology)
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