Is cosmic speed-up due to new gravitational physics?

2003/06/30 by Sean M. Carroll, Vikram Duvvuri, Mark Trodden +1 · 44 citations
Physics and Astronomy · #Black Holes and Theoretical Physics #Cosmology and Gravitation Theories #Relativity and Gravitational Theory #astro-ph #gr-qc #hep-ph #hep-th

paper · pdf · doi:10.1103/physrevd.70.043528

published as Phys.Rev.D70:043528,2004 · 4 pages, 1 figure, RevTeX. Typos corrected, references updated

arxiv created 2003/07/10 · openalex publication_date 2004/08/23 · arxiv updated 2009/11/30 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/04

Abstract

We show that cosmic acceleration can arise due to very tiny corrections to the usual gravitational action of general relativity, of the form R^\ensuremath-n with n>0. This model eliminates the need for a nonzero cosmological constant or any other form of dark energy, attributing a purely gravitational origin to the acceleration of the universe.

Citations

• Measurements of Ω and Λ from 42 High‐Redshift Supernovae
• Observational Evidence from Supernovae for an Accelerating Universe and a Cosmological Constant
• First Year Wilkinson Microwave Anisotropy Probe (WMAP) Observations: Preliminary Maps and Basic Results
• Cosmological consequences of a rolling homogeneous scalar field
• Inflation and the conformal structure of higher-order gravity theories
• The Case for a Positive Cosmological Lambda-term
• Inflatonless inflation
• k-Inflation

Cited by

• Classifying and avoiding singularities in the alternative gravity dark energy models
• Beyond the perfect fluid hypothesis for the dark energy equation of state
• Phantom crossing, equation-of-state singularities, and local gravity constraints in f(R) models
• Black holes inf(R)theories
• Solar System constraints on a cosmologically viable f(R) theory
• Collider signals of gravitational fixed points
• Cosmological electromagnetic fields and dark energy
• Wormhole geometries inf(R)modified theories of gravity
• Remarks on generalized scalar-tensor models of dark energy
• Modified gravity in Arnowitt–Deser–Misner formalism
• Dynamical masses in modified gravity
• Fixed points in interacting dark energy models
• Probing Gravity at Cosmological Scales by Measurements which Test the Relationship between Gravitational Lensing and Matter Overdensity
• Relaxing nucleosynthesis constraints on Brans-Dicke theories
• Brans-Dicke scalar field as a chameleon
• Testing gravity against the early time integrated Sachs-Wolfe effect
• Cosmological perturbations in elastic dark energy models
• An accelerating universe and cosmological perturbation in the ghost condensate
• Observational signatures off(R)dark energy models that satisfy cosmological and local gravity constraints
• Statefinder diagnostic for cosmology with the abnormally weighting energy hypothesis
• Gravity with perturbative constraints: Dark energy without new degrees of freedom
• Dispersion of growth of matter perturbations inf(R)gravity
• Noether symmetry in f(R) cosmology
• Black hole solutions inf(R)gravity coupled with nonlinear Yang-Mills field
• Parametrized post-Friedmann signatures of acceleration in the CMB
• Modified dispersion relations from the renormalization group of gravity
• “Detuned”f(R)gravity and dark energy
• Testing general relativity in cosmology
• Experimental Tests of General Relativity
• Spherical symmetry in f ( R )-gravity
• Lagrangian description of perfect fluids and modified gravity with an extra force
• The cosmology of asymmetric brane modified gravity
• Dynamical systems analysis of anisotropic cosmologies in R n -gravity
• Inhomogeneous Viscous Fluids in a Friedmann-Robertson-Walker (FRW) Universe
• Hyperbolicity of scalar-tensor theories of gravity
• Probing the cosmographic parameters to distinguish between dark energy and modified gravity models
• Consistent long distance modification of gravity from inverse powers of the curvature
• Acceleration of a spherical brane-universe
• On compatibility of string effective action with an accelerating universe
• Reconciling dark energy models withf(R)theories
• Quarks and the Cosmos
• f(R)theories of gravity
• Halting eternal acceleration with an effective negative cosmological constant
• Cosmic Structure Formation in a Viable Power-Law f(R) Gravity Model: Growth Dynamics, Stability, and Observational Signatures