Mass Production of IIA and IIB dS Vacua

TL;DR

This paper demonstrates a systematic method for constructing stable de Sitter vacua in string-inspired supergravity models by small modifications of Minkowski minima, with explicit examples in type IIA and IIB theories.

Contribution

It introduces a mass production procedure for creating multiple moduli stabilized de Sitter vacua, expanding the toolkit for string phenomenology.

Findings

Successful stabilization of dS vacua in various models

Use of anti-D6 and anti-D3 branes for uplift

Analysis of parameter ranges for the procedure's applicability

Abstract

We describe several applications of the recently proposed mass production procedure, where multiple moduli are stabilized in a dS vacuum, in supergravity models inspired by string theory. The construction involves a small downshift of an initial supersymmetric Minkowski minimum to a supersymmetric AdS minimum, and a consequent small uplift to a dS minimum. Our type IIA examples include dS stabilization in a 7-moduli model with $[SL(2, \mathbb{R})]^7$ tree level symmetry, and its simplified version, a 3-moduli STU model. In these models, we use uplifting anti-D6 branes. In type IIB models, we present 2- and 3-moduli examples of stable dS vacua in CY three-folds, with an uplifting anti-D3 brane. These include K3 fibration models, a CICY model and a multi-hole Swiss cheese model. We also address the issue whether this procedure is limited to a very small parameter range or if large deviations from the progenitor Minkowski vacuum are possible.