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arXiv 1812.04873hep-th
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宇宙学常数与电弱标度

The Cosmological Constant and the Electroweak Scale

Stefano Andriolo, Shing Yan Li, S. H. Henry Tye

摘要:

弦论除了弦尺度之外没有其他参数,所以四维时空的动力学紧化解应该同时决定普朗克尺度和宇宙学常数$Λ$。在IIB型理论中的跑道型凯勒隆起通量紧致化模型中,弦论的图景是通过扫描所有通量参数的离散值而产生的,我们发现对指数小的$Λ$的统计偏好是自然的(arXiv:1305.0753)。在此框架内,并将$Λ$中值与观测到的$Λ$相匹配,自然会出现质量尺度${\bf m}\simeq 100$ GeV。我们解释了如何电弱标度可以与此质量标度。

英文摘要:

String theory has no parameter except the string scale, so a dynamically compactified solution to 4 dimensional spacetime should determine both the Planck scale and the cosmological constant $Λ$. In the racetrack Kähler uplift flux compactification model in Type IIB theory, where the string theory landscape is generated by scanning over discrete values of all the flux parameters, a statistical preference for an exponentially small $Λ$ is found to be natural (arXiv:1305.0753). Within this framework and matching the median $Λ$ value to the observed $Λ$, a mass scale ${\bf m}\simeq 100$ GeV naturally appears. We explain how the electroweak scale can be identified with this mass scale.

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