Warped spectroscopy: localization of frozen bulk modes
Warped spectroscopy: localization of frozen bulk modes
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扭曲光谱：冻结体模式的定位
DOI：
10.1088/1126-6708/2006/08/021
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发表时间：
2006
影响因子：
5.4
通讯作者：
Anshuman Maharana
中科院分区：
文献类型：
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作者：
A. Frey;Anshuman Maharana
本文研究了IIB型弦紧化中考虑翘曲的三种形式通量下的介子-轴子涨落的10维运动方程。使用简化模型与物理可比的实际紧化，我们认为，最轻的模式本地化在长期扭曲的喉咙，并采取了大量的订单扭曲字符串规模。此外，Gukov-Vafa-维滕超势对最轻的质量模式是有效的;然而，质量与卡鲁扎-克莱因尺度相似，所以在长喉区（留下一个恒定的超势），介子-轴子应该从有效理论中积分出来。另一方面，对于中等或弱翘曲，通量诱导质量尺度和KK质量尺度之间有很大的等级关系。这个层次结构同意为平凡翘曲的参数。沿着的方式，我们还估计的影响，其他10维超引力运动方程的介子-轴子波动，因为这些方程作为约束。我们认为，他们给最简单的近似可以忽略不计的修正。
We study the 10D equation of motion of dilaton-axion fluctuations in type IIB string compactifications with three-form flux, taking warping into account. Using simplified models with physics comparable to actual compactifications, we argue that the lightest mode localizes in long warped throats and takes a mass of order the warped string scale. Also, the Gukov-Vafa-Witten superpotential is valid for the lightest mass mode; however, the mass is similar to the Kaluza-Klein scale, so the dilaton-axion should be integrated out of the effective theory in this long throat regime (leaving a constant superpotential). On the other hand, there is a large hierarchy between flux-induced and KK mass scales for moderate or weak warping. This hierarchy agrees with arguments given for trivial warping. Along the way, we also estimate the effect of the other 10D supergravity equations of motion on the dilaton-axion fluctuation, since these equations act as constraints. We argue that they give negligible corrections to the simplest approximation.