Scalar mode analysis of the warped Salam–Sezgin model
Scalar mode analysis of the warped Salam–Sezgin model
复制标题
扭曲 Salam-Sezgin 模型的标量模式分析
DOI：
10.1016/j.nuclphysb.2006.05.001
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发表时间：
2006
期刊：
影响因子：
--
通讯作者：
A. Papazoglou
中科院分区：
文献类型：
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作者：
Hyun Min Lee;A. Papazoglou
研究了余维为2的一般轴对称翘曲Salam-Sezgin模型的标量微扰区。我们关注的是与伸缩子混合的微扰。我们表明，标量涨落分析可以归结为研究常量波函数的两个标量模，加上服从单个薛定谔方程的非常量波函数的标量模。从得到的标量模的显式解出发，指出了非常数模在描述四维有效理论中的重要性。这一观察结果对于未扭曲的情况仍然成立，但在相关文献中被忽略了。此外，我们还证明了由于这些模式的存在，扭曲解在参数空间的某个区域内可能是不稳定的。
We study the scalar perturbation sector of the general axisymmetric warped Salam–Sezgin model with codimension-2 branes. We focus on the perturbations which mix with the dilaton. We show that the scalar fluctuation analysis can be reduced to studying two scalar modes of constant wavefunction, plus modes of non-constant wavefunction which obey a single Schrödinger equation. From the obtained explicit solution of the scalar modes, we point out the importance of the non-constant modes in describing the four-dimensional effective theory. This observation remains true for the unwarped case and was neglected in the relevant literature. Furthermore, we show that due to these modes, the warped solutions can be unstable for a certain region of the parameter space.