Stable Palatini f(R) braneworld
Stable Palatini f(R) braneworld
复制标题
稳定的 Palatini f(R) 膜世界
DOI：
10.1103/physrevd.98.024027
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发表时间：
2018-04
影响因子：
5
通讯作者：
Zhong Yuan
中科院分区：
文献类型：
--
作者：
Gu Bao-Min;Liu Yu-Xiao;Zhong Yuan
We consider the static domain wall braneworld scenario constructed from the Palatini formalism $f(\mathcal{R})$ theory. We check the self-consistency under scalar perturbations. By using the scalar-tensor formalism we avoid dealing with the higher-order equations. We develop the techniques to deal with the coupled system. We show that under some conditions, the scalar perturbation simply oscillates with time, which guarantees the stability. We also discuss the localization condition of the scalar mode by analyzing the effective potential and the fifth dimensional profile of the scalar mode. We apply these results to an explicit example, and show that only some of the solutions allow for stable scalar perturbations. These stable solutions also give nonlocalizable massless mode. This is important for reproducing a viable four-dimensional gravity.
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影响因子：
5
作者：
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通讯作者：
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f(R, T) 膜上的全线性扰动和重力本地化
影响因子：
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DOI：
10.1016/s0550-3213(00)00392-8
发表时间：
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期刊：
Nuclear Physics
影响因子：
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