Moduli stabilization in type IIB orientifolds at $h^{2,1}=50$

TL;DR

This paper explores the stabilization of all moduli in a complex Calabi-Yau orientifold with high Hodge number, developing an algorithm to generate flux vacua and testing the tadpole conjecture.

Contribution

It introduces a novel algorithm to generate a large set of flux vacua in a high-dimensional moduli space and tests the tadpole conjecture in this context.

Findings

Generated 10^5 flux vacua with small flux numbers

Smallest flux number found exceeds the tadpole bound

Supports the tadpole conjecture in large moduli spaces

Abstract

We study moduli stabilization in Calabi-Yau orientifold compactifications of type IIB string theory with O3- and O7-planes. We consider a Calabi-Yau three-fold with Hodge number $h^{2,1}=50$ and stabilize all axio-dilaton and complex-structure moduli by three-form fluxes. This is a challenging task, especially for large moduli-space dimensions. To address this question we develop an algorithm to generate $10^5$ flux vacua with small flux number $N_{\rm flux}$. Based on recent results by Crin\`o et al. we estimate the bound imposed by the tadpole-cancellation condition as $N_{\rm flux}\leq \mathcal O(10^3)$, however, the smallest flux number we obtain in our search is of order $N_{\rm flux}=\mathcal O(10^{4})$. This implies, in particular, that for all solutions to the F-term equations in our data set the tadpole conjecture is satisfied.