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arXiv 2303.03414hep-thastro-ph.COgr-qchep-ph
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IIB型弦论中的早期暗能量

Early Dark Energy in Type IIB String Theory

Michele Cicoli, Matteo Licheri, Ratul Mahanta, Evan McDonough, Francisco G. Pedro, Marco Scalisi

AI总结:

本文在IIB型弦论框架内结合KKLT或大体积场景实现了早期暗能量(EDE),通过识别$C_4$或$C_2$轴子并分析弱引力猜想的影响,指出LVS中由D7膜非微扰修正生成的$C_2$轴子是最有前景的EDE候选者。

摘要:

早期暗能量(EDE)是解决哈勃张力的一个有前景的模型,该模型在宇宙微波背景数据的启发下,对通常与轴子粒子相关的势能进行了推广。我们在IIB型弦论中发展了EDE的实现方案,将EDE场识别为$C_4$或$C_2$轴子,并在KKKT或大体积场景框架内实现了完整的闭弦模稳定。我们解释了如何在受控的有效场论中实现EDE能量尺度与其他场之间的自然层级。我们论证了,对于违反弱引力猜想的EDE场,无需对微观参数进行任何微调即可实现数据驱动的EDE能量尺度和衰变常数,而对于遵循该猜想的态,则必须引入微调。这使得在几个可行的模型中,LVS中具有由非零世界体积通量上的D7膜上的胶子凝聚产生的对超势的3个非微扰修正的$C_2$轴子成为最有前景的EDE候选者。

英文摘要:

Early Dark Energy (EDE) is a promising model to resolve the Hubble Tension, that, informed by Cosmic Microwave Background data, features a generalization of the potential energy usually associated with axion-like particles. We develop realizations of EDE in type IIB string theory with the EDE field identified as either a $C_4$ or $C_2$ axion and with full closed string moduli stabilization within the framework of either KKLT or the Large Volume Scenario. We explain how to achieve a natural hierarchy between the EDE energy scale and that of the other fields within a controlled effective field theory. We argue that the data-driven EDE energy scale and decay constant can be achieved without any tuning of the microscopic parameters for EDE fields that violate the weak gravity conjecture, while for states that respect the conjecture it is necessary to introduce a fine-tuning. This singles out as the most promising EDE candidates, amongst several working models, the $C_2$ axions in LVS with 3 non-perturbative corrections to the superpotential generated by gaugino condensation on D7-branes with non-zero world-volume fluxes.

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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