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arXiv 1605.03087hep-ph
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关于具有膜曲率的Randall-Sundrum模型中的半径

Regarding the Radion in Randall-Sundrum Models with Brane Curvature

Barry M. Dillon, Damien P. George, Kristian L. McDonald

摘要:

在兰德尔-Sundrum模型中,人们通常期望的Radion是最轻的新的“重力”状态,因为它是对偶的复合伪戈德斯通玻色子与共形对称破缺在IR。在这里,我们研究了局部膜曲率的影响的性质的Radion Goldberger-Wise稳定的兰德尔-Sundrum模型。我们指出,辐射子质量和与膜物质的耦合都对膜曲率敏感。还研究了通过与希格斯玻色子的红外局域非最小耦合进行的放射子/希格斯玻色子动力学混合,这与IR曲率的$\mathcal{O}(10)$值(显着抑制第一卡鲁扎-克莱因引力子质量所需的)可能发生的幽灵状放射子有关。我们还讨论了一类投机IR本地化条款涉及的radion。关于双四维理论的基本意见。

英文摘要:

In Randall-Sundrum models, one typically expects the radion to be the lightest new "gravity" state, as it is dual to a composite pseudo-Goldstone boson associated with conformal symmetry breaking in the IR. Here, we investigate the effects of localized brane curvature on the properties of the radion in Goldberger-Wise stabilized Randall-Sundrum models. We point out that both the radion mass and coupling to brane matter are sensitive to the brane curvature. Radion/Higgs kinetic mixing, via an IR-localized non-minimal coupling to the Higgs, is also investigated, in relation to the ghost-like radion that can occur for $\mathcal{O}(10)$ values of the IR curvature (as required to significantly suppress the first Kaluza-Klein graviton mass). We also discuss a class of speculative IR localized terms involving the radion. Basic comments regarding the dual 4D theory are offered.

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