Abstract
We discuss solar system constraints on f(G) gravity models, where f is a function of the Gauss-Bonnet term G. We focus on cosmologically viable f(G) models that can be responsible for late-time cosmic acceleration. These models generally give rise to corrections of the form (r/rs)p to the vacuum Schwarzschild solution, where ε=H*2rs2□1, rs is the Schwarzschild radius of the Sun, and H* is the Hubble parameter today. We generally estimate the strength of modifications to general relativity in order to confront models with a number of experiments, such as the deflection of light and the perihelion shift. We show that cosmologically viable f(G) models can be consistent with solar system constraints for a wide range of model parameters.
Original language | English |
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Article number | 063516 |
Journal | Physical Review D - Particles, Fields, Gravitation and Cosmology |
Volume | 80 |
Issue number | 6 |
DOIs | |
Publication status | Published - 2009 Sep 15 |
Externally published | Yes |
ASJC Scopus subject areas
- Nuclear and High Energy Physics
- Physics and Astronomy (miscellaneous)