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arXiv · 2306.07332

De Sitter vacua -- when are `subleading corrections' really subleading?

Bruno Valeixo Bento·Dibya Chakraborty·Susha Parameswaran·Ivonne Zavala
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Abstract

We consider various string-loop, warping and curvature corrections that are expected to appear in type IIB moduli stabilisation scenarios. It has recently been argued, in the context of strongly-warped LVS de Sitter vacua, that it is impossible to achieve parametric suppression in all of these corrections simultaneously \cite{Junghans:2022exo}. We investigate corrections in the context of the recently discovered weakly-warped LVS de Sitter vacua, which represent a distinct branch of solutions in type IIB flux compactifications, supported by small conifold flux numbers $MK \lesssim 32$. Warping corrections become less problematic in this regime, and some corrections even help to reach the weakly-warped regime of parameter space. Other corrections continue to be dangerous and would require numerical coefficients to be computed -- and found to be small -- in order not to destroy the consistency of the weakly-warped LVS de Sitter solution.

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Bruno Valeixo Bento, Dibya Chakraborty, Susha Parameswaran, Ivonne Zavala. 2023-06-12. De Sitter vacua -- when are `subleading corrections' really subleading?. https://arxiv.org/abs/2306.07332

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