Solar system constraints on f(G) gravity models
Solar system constraints on f(G) gravity models
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DOI：
10.1103/physrevd.80.063516
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发表时间：
2009-07
影响因子：
5
通讯作者：
A. D. Felice;S. Tsujikawa
中科院分区：
文献类型：
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作者：
A. D. Felice;S. Tsujikawa
我们讨论太阳系对 f(G) 引力模型的约束，其中 f 是高斯-邦内项 G 的函数。我们关注宇宙学上可行的 f(G) 模型，该模型可以解释后期宇宙加速。这些模型通常会产生对真空史瓦西解的 epsilon*(r/rs)^p 形式的修正，其中 epsilon = H^2 rs^2 << 1，rs 是太阳的史瓦西半径，H 是当今的哈勃参数。我们通常会估计广义相对论修改的强度，以便通过许多实验（例如光偏转和近日点位移）来对抗模型。我们证明，宇宙学上可行的 f(G) 模型可以与太阳系对各种模型参数的约束保持一致。评论：19页，使用ReVTeX
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