Letter: Gravitational Potential in the Palatini Formulation of Modified Gravity
Letter: Gravitational Potential in the Palatini Formulation of Modified Gravity
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DOI：
10.1023/b:gerg.0000036052.81522.fe
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发表时间：
2003-11
影响因子：
2.8
通讯作者：
Xin-he Meng;Peng Wang
中科院分区：
文献类型：
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作者：
Xin-he Meng;Peng Wang
到目前为止，广义相对论已经通过了几乎所有的地面和太阳系实验。至少在弱场近似下，任何合理的扩展引力模型都应该始终如一地简化为它。在这项工作中，我们得到了具有de Sitter真空解的修正引力的Palatini形式的引力势。我们认为牛顿极限总是在这类模型中得到的，对于缓慢移动的源，与广义相对论的偏差是非常小的。
General Relativity has so far passed almost all the ground-based and solar-system experiments. Any reasonable extended gravity models should consistently reduce to it at least in the weak field approximation. In this work we derive the gravitational potential for the Palatini formulation of the modified gravity of theL(R) type which admits a de Sitter vacuum solution. We argue that the Newtonian limit is always obtained in those class of models and the deviations from General Relativity are very small for a slowly moving source.