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Dark Energy Versus Modified Gravity
Open accessAbstract
Understanding the reason for the observed accelerated expansion of the Universe represents one of the fundamental open questions in physics. In cosmology, a classification has emerged among physical models for this acceleration, distinguishing between dark energy and modified gravity. In this review, we provide a brief overview of models in both categories as well as their phenomenology and characteristic observable signatures in cosmology. We also introduce a rigorous distinction between dark energy and modified gravity based on the strong and weak equivalence principles.
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“They state that using the SEP to make this distinction can be motivated further by the conjecture that GR is the only metric theory that satisfy the SEP, see Will (2014).”
From Testing general relativity in cosmology (2019) · cites this paper as Joyce et al. (2016)
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“Joyce et al. (2016) and possibly others, propose to use the strong equivalence principle (SEP) (see Sect. 2.1) to draw a distinction between GR dark energy models versus MG models. They suggest to call any model that satisfies the SEP as a dark energy model and any model that violates SEP to be an MG model.”
From Testing general relativity in cosmology (2019) · cites this paper as Joyce et al. (2016)
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“They state that, heuristically, the SEP forbids the presence of a fifth force which motivates the use of such a discriminant.”
From Testing general relativity in cosmology (2019) · cites this paper as Joyce et al. (2016)
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Citations
Cites
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Metadata
- Authors
- Joyce, A., Lombriser, L., & Schmidt, F.
- Affiliations
- University of Chicago (US)
- Royal Observatory (GB)
- Max Planck Institute for Astrophysics (DE)
- Corresponding author
- Schmidt, Fabian
- Venue
- Annual Review of Nuclear and Particle Science
- Publisher
- Annual Reviews
- Published
- 2016-10-19
- Volume
- 66
- Issue
- 1
- Pages
- 95-122
- ISSN
- 0163-8998 (ISSN-L)
- 1545-4134
- OpenAlex
- W2253235198
- Cited by
- 463
- References
- 158
- Citations by year
- 2026: 30 · 2025: 56 · 2024: 57 · 2023: 46 · 2022: 37 · 2021: 42 · 2020: 52 · 2019: 46 · 2018: 43 · 2017: 46 · 2016: 8
- FWCI
- 3.45
- Type
- journal article
- Language
- en
- Open access
- bronze
- doi.org
- Locations
- Annual Review of Nuclear and Particle Science (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 › Physics and Astronomy › Nuclear and High Energy Physics › Dark Matter and Cosmic Phenomena
- Keywords
- dark energy, modified gravity, cosmic acceleration, equivalence principle, strong equivalence principle, weak equivalence principle, cosmological models, observational signatures
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