期刊
PHYSICAL REVIEW D
卷 80, 期 6, 页码 -出版社
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevD.80.063516
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资金
- Belgian Federal Office for Scientific, Technical, and Cultural
- Interuniversity Attraction Pole [P6/11]
- JSPS [30318802]
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/r(s))(p) to the vacuum Schwarzschild solution, where epsilon = H(*)(2)r(s)(2) << 1, r(s) 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.
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