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A more attractive scheme for radion stabilization and supercooled phase transition
Journal of High Energy Physics ( IF 5.4 ) Pub Date : 2020-02-01 , DOI: 10.1007/jhep02(2020)111
Kohei Fujikura , Yuichiro Nakai , Masaki Yamada

We propose a new radion stabilization mechanism in the Randall-Sundrum spacetime, introducing a bulk SU( N H ) gauge field which confines at a TeV scale. It turns out that the radion is stabilized by the balance between a brane tension and a pressure due to the Casimir energy of the strong SU( N H ) gauge field. We investigate the phase transition between the Randall-Sundrum (compactified) spacetime and a de-compactified spacetime and determine the parameter regime in which eternal (old) inflation is avoided and the phase transition can be completed. In comparison to the Goldberger-Wise mechanism, the 5D Planck mass can be larger than the AdS curvature and a classical description of the gravity is reliable in our stabilization mechanism. We also discuss the effect of the phase transition in cosmology such as an entropy dilution and a production of gravitational waves.

中文翻译:

更有吸引力的放射性稳定和过冷相变方案

我们在 Randall-Sundrum 时空提出了一种新的无线电稳定机制,引入了一个体积限制在 TeV 尺度的 SU(NH) 规范场。事实证明,由于强 SU(NH) 规范场的 Casimir 能量,膜张力和压力之间的平衡使无线电子稳定。我们研究了 Randall-Sundrum(压缩的)时空和去压缩的时空之间的相变,并确定了避免永恒(旧)膨胀和可以完成相变的参数机制。与 Goldberger-Wise 机制相比,5D 普朗克质量可以大于 AdS 曲率,并且重力的经典描述在我们的稳定机制中是可靠的。
更新日期:2020-02-01
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