Abstract The properties of the effective scalar potential are studied in the framework of type IIB string theory, taking into account perturbative and non-perturbative corrections. The former modify the Kahler potential and include α ′ and logarithmic corrections generated when intersecting D7 branes are part of the internal geometric configuration. The latter add exponentially suppressed Kahler moduli dependent terms to the fluxed superpotential. The possibility of partial elimination of such terms which may happen for particular choices of world volume fluxes is also taken into account. That being the case, a simple set up of three Kahler moduli is considered in the large volume regime, where only one of them is assumed to induce non-perturbative corrections. It is found that the shape of the F-term potential crucially depends on the parametric space associated with the perturbative sector and the volume modulus. De Sitter vacua can be obtained by implementing one of the standard mechanisms, i.e., either relying on D-terms related to U ( 1 ) symmetries associated with the D7 branes, or introducing D 3 ‾ branes. In general it is observed that the combined effects of non-perturbative dynamics and the recently introduced logarithmic corrections lead to an effective scalar potential displaying interesting cosmological and phenomenological properties.

中文翻译：

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关于来自 IIB/F 型理论紧缩中的微扰和非微扰动力学的 de Sitter vacua 的注释

摘要 在IIB型弦理论的框架下研究了有效标量势的性质，同时考虑了微扰和非微扰校正。前者修改了 Kahler 势，包括 α ' 和与 D7 膜相交时产生的对数校正，是内部几何构型的一部分。后者将指数抑制的 Kahler 模相关项添加到通量超电势。还考虑了部分消除对于世界体积通量的特定选择可能发生的这些项的可能性。在这种情况下，在大体积区域中考虑了三个 Kahler 模量的简单设置，其中假设只有一个会引起非微扰校正。发现 F 项势的形状关键取决于与微扰扇区和体积模量相关的参数空间。De Sitter vacua 可以通过实施标准机制之一来获得，即依赖于与 D7 膜相关的 U (1) 对称性的 D 项，或引入 D 3 ‾ 膜。一般来说，观察到非微扰动力学和最近引入的对数校正的组合效应导致有效的标量势，显示出有趣的宇宙学和现象学特性。或引入 D 3 ‾ 膜。一般来说，观察到非微扰动力学和最近引入的对数校正的组合效应导致有效的标量势，显示出有趣的宇宙学和现象学特性。或引入 D 3 ‾ 膜。一般来说，观察到非微扰动力学和最近引入的对数校正的组合效应导致有效的标量势，显示出有趣的宇宙学和现象学特性。