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arXiv 2106.04592hep-th
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F-理论中$α'$展开式的系统学

Systematics of the $α'$ Expansion in F-Theory

Michele Cicoli, Fernando Quevedo, Raffaele Savelli, Andreas Schachner, Roberto Valandro

摘要:

众所周知,从弦紧化中提取可靠的低能信息需要详细了解相应的有效场论的紫外敏感性。尽管过去的努力在计算微扰弦更正的树级行动,既没有一个系统的方法,也没有一个统一的框架尚未出现。我们在这个方向上取得进展,专注于模依赖的微扰修正的4D标量位的IIB型卡-丘orientifold紧化。我们采用两种策略。首先,我们使用IIB型弦论的两个重标度对称性来推断任何微扰修正对介子和卡-丘体积的依赖性。其次,我们利用F/M理论对偶性得出结论:在M理论作用量的任意阶导数展开中,对椭圆化的Calabi-Yau四重函数的KK约化只能产生对四维标量势的$(α')^{\rm even}$修正,而且,对于平凡纤维化,这些修正都为零。最后,我们证明了$(α')^{\rm odd}$效应是由椭圆纤维化上的KK和缠绕模式的积分引起的,并认为弦树水平上的主要无尺度破缺效应是由$(α')^3$效应,即模势对数修正引起的.

英文摘要:

Extracting reliable low-energy information from string compactifications notoriously requires a detailed understanding of the UV sensitivity of the corresponding effective field theories. Despite past efforts in computing perturbative string corrections to the tree-level action, neither a systematic approach nor a unified framework has emerged yet. We make progress in this direction, focusing on the moduli dependence of perturbative corrections to the 4D scalar potential of type IIB Calabi-Yau orientifold compactifications. We proceed by employing two strategies. First, we use two rescaling symmetries of type IIB string theory to infer the dependence of any perturbative correction on both the dilaton and the Calabi-Yau volume. Second, we use F/M-theory duality to conclude that KK reductions on elliptically-fibred Calabi-Yau fourfolds of the M-theory action at any order in the derivative expansion can only generate $(α')^{\rm even}$ corrections to the 4D scalar potential, which, moreover, all vanish for trivial fibrations. We finally give evidence that $(α')^{\rm odd}$ effects arise from integrating out KK and winding modes on the elliptic fibration and argue that the leading no-scale breaking effects at string tree-level arise from $(α')^3$ effects, modulo potential logarithmic corrections.

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