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Cited by 210Cosmology and Gravitation TheoriesNoncommutative and Quantum Gravity TheoriesDark Matter and Cosmic Phenomena

Differentiating between modified gravity and dark energy

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Lue, Arthur, Scoccimarro, Román, Starkman, Glenn·2004·Physical Review D
DOI 10.1103/physrevd.69.044005
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Abstract

The nature of the fuel that drives today's cosmic acceleration is an open and tantalizing mystery. We entertain the suggestion that the acceleration is not the manifestation of yet another new ingredient in the cosmic gas tank, but rather a signal of our first real lack of understanding of gravitational physics. By requiring that the underlying gravity theory respect Birkhoff's law, we derive the modified gravitational force law necessary to generate any given cosmology, without reference to the fundamental theory, revealing modifications of gravity at scales typically much smaller than today's horizon. We discuss how, through these modifications, the growth of density perturbations, the late-time integrated Sachs-Wolfe effect, and even solar-system measurements may be sensitive to whether today's cosmic acceleration is generated by dark energy or modified gravitational dynamics, and are subject to imminent observational discrimination. We argue how these conclusions can be more generic, and probably not dependent on the validity of Birkhoff's law.

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  • By measuring growth of large-scale structure and luminosity and angular distances as functions of redshift via weak lensing, large-scale structure, supernovae, and cluster counting, LSST data can reveal whether recent cosmic acceleration is due to dark energy or modified gravity.

    “By simultaneously measuring the growth of large-scale structure and luminosity and angular distances as functions of redshift ( via WL, LSS, SN, and cluster counting ) , LSST data can reveal whether the recent cosmic acceleration is due to dark energy or modi fi ed gravity”

    From LSST: From Science Drivers to Reference Design and Anticipated Data Products (2019) · cites this paper as Lue et al. 2004

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Related

Authors
Lue, A., Scoccimarro, R., & Starkman, G.
Affiliations
  • Case Western Reserve University (US)
  • New York University (US)
ORCID
Venue
Physical Review D
Publisher
American Physical Society (APS)
Published
2004-02-06
Volume
69
Issue
4
ISSN
  • 0556-2821 (ISSN-L)
  • 1550-7998
  • 1550-2368
DOI
10.1103/physrevd.69.044005
OpenAlex
W2043172975
Cited by
210
References
40
Citations by year
2026: 2 · 2025: 3 · 2024: 6 · 2023: 6 · 2022: 1 · 2021: 2 · 2020: 2 · 2019: 6 · 2018: 6 · 2017: 2 · 2016: 7 · 2015: 4 · 2014: 3 · 2013: 6 · 2012: 9
FWCI
16.01
Type
journal article
Language
en
Open access
Licence
link.aps.org/licenses/aps-default-license (vor)
Locations
  • Physical review. D. Particles, fields, gravitation, and cosmology/Physical review. D. Particles and fields (publishedVersion)
  • arXiv (Cornell University) (submittedVersion)
  • CERN Document Server (European Organization for Nuclear Research) (submittedVersion)
  • arXiv (Cornell University)
Funders
  • U.S. Department of Energy
  • Case Western Reserve University
Topics
  • Physical Sciences › Physics and Astronomy › Astronomy and Astrophysics › Cosmology and Gravitation Theories
  • Physical Sciences › Physics and Astronomy › Statistical and Nonlinear Physics › Noncommutative and Quantum Gravity Theories
  • Physical Sciences › Physics and Astronomy › Nuclear and High Energy Physics › Dark Matter and Cosmic Phenomena
Keywords
modified gravity, dark energy, cosmic acceleration, Birkhoff's theorem, cosmological perturbations, integrated Sachs-Wolfe effect, solar system tests of gravity

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