Solar system constraints on f(G) gravity models
(2009) Physical Review D, Particles, Fields, Gravitation and Cosmology — Vol. 80, p. 63516 (2009)
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- (en) 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 epsilon*(r/rs)^p to the vacuum Schwarzschild solution, where epsilon = H^2 rs^2 << 1, rs is the Schwarzschild radius of 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. Comment: 19 pages, uses ReVTeX
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De Felice, A., & Tsujikawa, S. (2009). Solar system constraints on f(G) gravity models. Physical Review D, Particles, Fields, Gravitation and Cosmology, 80, 63516. https://doi.org/10.1103/PhysRevD.80.063516 (Original work published 2009)