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arXiv 2506.08083hep-thastro-ph.COgr-qchep-ph
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微扰Kähler模膨胀

Perturbative Kähler Moduli Inflation

Masaryk University（马萨里克大学）；BRAC University（布拉格大学）；The Graduate Center, CUNY（纽约市立大学研究生中心）

Mishaal Hai, Ahmed Rakin Kamal, Noshin Ferdous Shamma, Md Shaikot Jahan Shuvo

备注：
Published version appearing in IJMPD
发表信息：
Int. J. Mod. Phys. D 35 (2026) 2650071
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AI总结：

本文在IIB型弦理论中利用微扰修正稳定多个Kähler模，构造了两类满足EFT和宇宙学约束的暴胀势，并分别给出与CMB数据一致的标量-张量比。

摘要：

在这项工作中，我们在IIB型弦理论框架下提出了两类暴胀模型。暴胀子对应于将IIB型弦理论紧致化在Calabi-Yau流形上所产生的blow-up Kähler模。利用微扰修正，我们首先强调了一种稳定多个Kähler模的程序。对于两个Kähler模的情形，我们在Kähler锥内明确构造了两类同时满足有效场论（EFT）和宇宙学约束的暴胀势。第一类模型源于blow-up模式的模重定义，得到的势形式为$V(ϕ)=V_{0}(1+C_{1} ϕ^{2/3})$，与宇宙微波背景（CMB）数据一致，标量-张量比$r\lesssim 10^{-2}$。第二类模型是最近作为loop blow-up暴胀提出的，其形式为$V(ϕ)=V_{0}(1+C_{2}ϕ^{-2/3})$，同样与CMB数据一致，标量-张量比$r\lesssim 10^{-8}$。我们的工作在稳定化机制以及由此得到的标量-张量比方面与原始的loop blow-up暴胀不同。

英文摘要：

In this work, we present two classes of inflationary models in the framework of type IIB string theory. The inflatons correspond to blow-up Kähler modulus arising from compactifying type IIB string theory on a Calabi-Yau. Using perturbative corrections, we first highlight a procedure for stabilising more than one Kähler modulus. For the case of two Kähler moduli, we explicitly construct two classes of inflationary potentials within the Kähler cone which satisfy both EFT and cosmological constraints. The first class of models, arising from moduli redefinition of the blow-up mode, garners a potential of the form $V(ϕ)=V_{0}(1+C_{1} ϕ^{2/3})$ align with CMB data with tensor-to-scalar ratio $r\lesssim 10^{-2}$. The second class of models, which have been recently proposed as loop blow-up inflation, have a form $V(ϕ)=V_{0}(1+C_{2}ϕ^{-2/3})$, also agrees with CMB data with tensor-to-scalar ratio $r\lesssim 10^{-8}$. Our work differs from the original loop blow-up inflation in terms of stabilization mechanism and subsequently the tensor-to-scalar ratio.

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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