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arXiv 1206.0819hep-thastro-ph.COhep-ph
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IIB型弦轴宇宙及其低能唯象

The type IIB string axiverse and its low-energy phenomenology

Michele Cicoli, Mark Goodsell, Andreas Ringwald

摘要:

我们研究了IIB型定向折叠紧化中的闭弦轴子。我们表明,自然值的背景通量的模量稳定机制的大体积的情况下(LVS)产生的axiverse特征的存在下,QCD轴子加上许多轻的轴子状粒子的质量是grammically分级。我们研究了LVS轴宇宙的唯象特征,导出了轴子的质量及其与物质和规范场的耦合。我们还确定何时闭弦轴子可以解决强CP问题,并分析了第一个明确的例子,半现实的模型与稳定的模量和QCD轴子候选人,这是不吃的异常阿贝尔规范玻色子。我们讨论了暴胀方案的选择对LVS轴宇宙的影响,并总结了天体物理学,宇宙学和实验的限制。此外,我们还展示了如何构建模型与额外的轻轴子类粒子,可以解释一些有趣的天体物理异常,并可以在下一代的轴子太阳镜和光照射通过一个墙壁实验中寻找。

英文摘要:

We study closed string axions in type IIB orientifold compactifications. We show that for natural values of the background fluxes the moduli stabilisation mechanism of the LARGE Volume Scenario (LVS) gives rise to an axiverse characterised by the presence of a QCD axion plus many light axion-like particles whose masses are logarithmically hierarchical. We study the phenomenological features of the LVS axiverse, deriving the masses of the axions and their couplings to matter and gauge fields. We also determine when closed string axions can solve the strong CP problem, and analyse the first explicit examples of semi-realistic models with stable moduli and a QCD axion candidate which is not eaten by an anomalous Abelian gauge boson. We discuss the impact of the choice of inflationary scenario on the LVS axiverse, and summarise the astrophysical, cosmological and experimental constraints upon it. Moreover, we show how models can be constructed with additional light axion-like particles that could explain some intriguing astrophysical anomalies, and could be searched for in the next generation of axion helioscopes and light-shining-through-a-wall experiments.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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