The accelerating universe and a limiting curvature proposal
arXiv:astro-ph/0608034 · doi:10.1088/1475-7516/2007/02/004
Abstract
We consider the hypothesis of a limiting minimal curvature in gravity as a way to construct a class of theories exhibiting late-time cosmic acceleration. Guided by the minimal curvature conjecture (MCC) we are naturally lead to a set of scalar tensor theories in which the scalar is non-minimally coupled both to gravity and to the matter Lagrangian. The model is compared to the Lambda Cold Dark Matter concordance model and to the observational data using the gold SNeIa sample of Riess et. al. (2004). An excellent fit to the data is achieved. We present a toy model designed to demonstrate that such a new, possibly fundamental, principle may be responsible for the recent period of cosmological acceleration. Observational constraints remain to be imposed on these models.
22 pages, 7 figures; revised version to appear in JCAP; references added
References in corpus (17)
- Dynamics of dark energy
- Dark energy in modified Gauss-Bonnet gravity: late-time acceleration and the hierarchy problem
- Robust Dark Energy Constraints from Supernovae, Galaxy Clustering, and Three-Year Wilkinson Microwave Anisotropy Probe Observations
- Cosmology and Astrophysical Constraints of Gauss-Bonnet Dark Energy
- Scalar-Tensor Models of Normal and Phantom Dark Energy
- Early Dark Energy Cosmologies
- Modified-Source Gravity and Cosmological Structure Formation
- Ghosts, Instabilities, and Superluminal Propagation in Modified Gravity Models
- Cosmogenic Neutrinos from the propagation of Ultra High Energy Nuclei
- Ghost conditions for Gauss-Bonnet cosmologies
- Evolving Newton's Constant, Extended Gravity Theories and SnIa Data Analysis
- Dark Energy in the Dark Ages
- Insights into Dark Energy: Interplay Between Theory and Observation
- Towards a Stringy Resolution of the Cosmological Singularity
- Sectional Curvature Bounds in Gravity: Regularisation of the Schwarzschild Singularity
- Classical limit of quantum gravity in an accelerating universe
- Geometric obstruction of black holes
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- General Non-minimal Kinetic coupling to gravity
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- Energy conditions and current acceleration of the universe
- Non-minimal Kinetic coupling to gravity and accelerated expansion
- Stability Analysis in Tachyonic Potential Chameleon cosmology
- Metric gravity theories and cosmology. I. Physical interpretation and viability
- Stability of magnetic black holes in general nonlinear electrodynamics
- Non-minimal kinetic coupling and the phenomenology of dark energy
- Cosmological perturbations and stability of nonsingular cosmologies with limiting curvature
- Non-minimal derivative coupling gravity in cosmology
- A new approach in stability analysis: case study: tachyon cosmology with non-minimally coupled scalar field-matter
- Maximal extensions and singularities in inflationary spacetimes
- Acceleration of the Universe via f(R) Gravities and The Stability of Extra Dimensions
- f(R) Gravities à la Brans-Dicke
- Non-minimal Derivative Coupling Scalar Field and Bulk Viscous Dark Energy
- Alignment procedure of the LHCb Vertex Detector
- Nonsingular Schwarzschild-de Sitter Black Hole
- Screening Mechanism and Late-time Cosmology: Role of a Chameleon-Brans-Dicke Scalar Field
- Past extendibility and initial singularity in Friedmann-Lemaître-Robertson-Walker and Bianchi I spacetimes
- Theories with limited extrinsic curvature and a nonsingular anisotropic universe
- Eternal Universes
- Investigation of Bouncing Universe and Phantom Crossing in Modified Gravity Coupled with Weyl Tensor and its Reconstruction
- Chameleon gravity on cosmological scales
- Dynamics of the self-interacting chameleon cosmology
- Implications of the singularity theorem for the size of a nonsingular universe
- Cosmological dynamics of holographic dark energy with non-minimally coupled scalar field