Searching for axions and ALPs from string theory
Searching for axions and ALPs from string theory
复制标题
从弦理论中寻找轴子和 ALP
DOI：
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发表时间：
2012
期刊：
影响因子：
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通讯作者：
A. Ringwald
中科院分区：
文献类型：
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作者：
A. Ringwald
我们回顾了在IIB弦通量紧化中对闭合弦轴子和类轴子粒子（ALPs）的搜索。对于背景通量和TeV尺度引力子质量的自然值，大体积场景的模稳定机制预测了具有中等尺度衰变常数fa ~ 109÷12 GeV的QCD轴子候选者的存在，它与承载可见扇区的膜包裹的小周期有关，加上与大周期有关的几乎无质量和几乎解耦的ALP。在可见扇形膜包裹超过两个相交周期的最小数量的情况下，有更多的阿尔卑斯山具有与QCD候选轴子近似相同的衰变常数和光子耦合，但它们的指数更轻。在不久的将来，有令人兴奋的现象学机会来寻找这些轴子和阿尔卑斯山。对于fa ~ 1011÷12 GeV， QCD轴子可以成为暗物质的主要部分，并且可以在利用微波腔的光镜中检测到。对于fa ~ 109÷10 GeV，额外的阿尔卑斯山可以解释天体物理异常，并在即将到来的一代太阳望远镜和光穿墙实验中进行搜索。
We review searches for closed string axions and axion–like particles (ALPs) in IIB string flux compactifications. For natural values of the background fluxes and TeV scale gravitino mass, the moduli stabilisation mechanism of the LARGE Volume Scenario predicts the existence of a QCD axion candidate with intermediate scale decay constant, fa ~ 109÷12 GeV, associated with the small cycles wrapped by the branes hosting the visible sector, plus a nearly massless and nearly decoupled ALP associated with the LARGE cycle. In setups where the visible sector branes are wrapping more than the minimum number of two intersecting cycles, there are more ALPs which have approximately the same decay constant and coupling to the photon as the QCD axion candidate, but which are exponentially lighter. There are exciting phenomenological opportunities to search for these axions and ALPs in the near future. For fa ~ 1011÷12 GeV, the QCD axion can be the dominant part of dark matter and be detected in haloscopes exploiting microwave cavities. For fa ~ 109÷10 GeV, the additional ALPs could explain astrophysical anomalies and be searched for in the upcoming generation of helioscopes and light–shining–through–a–wall experiments.
关于多部分网络的重整化
影响因子：
5.4
作者：
Gardi E
通讯作者：
Gardi E