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arXiv 2108.00370gr-qchep-th
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高维F(R)引力模稳定性的临界分析

A critical analysis of modulus stabilization in a higher dimensional F(R) gravity

Indrani Banerjee, Tanmoy Paul, Soumitra SenGupta

摘要:

对于F(R)引力,在$M_4 \times Z_2$轨道边界上具有非平坦的deSitter 3-膜,导出了体5维几何的精确解.相应的形式的F(R),导致这样一个精确的解决方案的体积度规推导出原来有所有的正整数幂的R.在这样的情况下的模(radion场)的稳定性问题进行了分析,严格的爱因斯坦和约旦框架中的不同曲率时代。有效四维理论中的辐射子呈现出一个幻影时代,使得这个模型对于非奇异反弹是可行的。在有效$3+1$维理论中,通过由此得到的辐射场的稳定值,展示了规范层次问题的同时解决。

英文摘要:

An exact solution for the bulk 5-dimensional geometry is derived for F(R) gravity with non-flat de-Sitter 3-branes located at the $M_4 \times Z_2$ orbifold boundaries. The corresponding form of F(R) that leads to such an exact solution of the bulk metric is derived which turns out to have all positive integer powers of R.In such a scenario the stability issue of the modulus (radion field) is analyzed critically for different curvature epochs in both Einstein and Jordan frames. The radion in the effective 4-d theory exhibits a phantom epoch making this model viable for a non-singular bounce. Simultaneous resolution of the gauge hierarchy problem is exhibited through the resulting stable vaue of the radion field in the effective $3+1$ dimensional theory.

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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