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arXiv 0910.0434gr-qcastro-ph.COastro-ph.IM
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从度量f(R)到标量张量理论的跳跃及其后牛顿参数间的关系

Jumping from Metric f(R) to Scalar-Tensor Theories and the relations between their post-Newtonian Parameters

Monica Capone, Matteo Luca Ruggiero

摘要:

我们回顾了度规形式的$f(R)$引力与标量张量引力之间的动力学等价性,并利用这种等价性推导了$f(R)$理论的后牛顿参数$γ$和$β$,得到了与文献中已知的结果不同的结果.然后,我们得到这些参数的标量场的质量(或者,换句话说,与$f(R)$理论相关联的附加标量自由度的质量),它可以用来约束$f(R)$重力通过当前的观测方面的明确表达式。

英文摘要:

We review the dynamical equivalence between $f(R)$ gravity in the metric formalism and scalar-tensor gravity, and use this equivalence to deduce the post-Newtonian parameters $γ$ and $β$ for a $f(R)$ theory, obtaining a result that is different with respect to that known in the literature. Then, we obtain explicit expressions of these paremeters in terms of the mass of the scalar field (or, differently speaking, the mass of the additional scalar degree of freedom associated to a $f(R)$ theory) which can be used to constrain $f(R)$ gravity by means of current observations.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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