基于Goldberger-Wise机制的反作用翘曲几何模型的模量稳定化
Modulus stabilisation in a backreacted warped geometry model via Goldberger-Wise mechanism
摘要：
在高维膜世界的背景下，额外维模的稳定化是解决基本粒子物理标准模型中规范层次问题的基本要求。对于Randall-Sundrum（RS）弯曲的额外维模型，Goldberger和Wise（GW）提出了一种非常有用的机制，即在体时空中引入一个标量场，忽略了标量场的反作用对背景度规的影响。本文研究了稳定场的反作用对稳定条件的影响，以及对额外维模即辐射子物理的影响。特别地，我们得到了TeV膜上由于反反应效应引起的质量变化以及Radion与标准模型物质场的耦合.我们的计算还显示了Csaki等人在\cite{kribs}中采用的治疗与Goldberger-Wise在\cite{GW1,GW_radion}中采用的治疗之间的重要等效性。
英文摘要：
In the context of higher dimensional braneworld scenario, the stabilisation of extra dimensional modulus is an essential requirement for resolving the gauge hierarchy problem in the context of Standard Model of elementary particle Physics. For Randall-Sundrum (RS) warped extra dimensional model, Goldberger and Wise (GW) proposed a much useful mechanism to achieve this using a scalar field in the bulk spacetime ignoring the effects of backreaction of the scalar field on the background metric. In this article we examine the influence of the backreaction of the stabilising field on the stabilisation condition as well as that on the Physics of the extra dimensional modulus namely radion. In particular we obtain the modifications of the mass and the coupling of the radion with the Standard Model (SM) matter fields on the TeV brane due to backreaction effect. Our calculation also brings out an important equivalence between the treatments followed by Csaki et.al. in \cite{kribs} and Goldberger-Wise in \cite{GW1,GW_radion}.
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