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de Sitter and S-folds in type IIB from 𝒩 = 4 D = 4 gauged supergravity
Abstract
In this paper, we classify the type IIB uplifts of the 𝒩=4 D=4 pure SO(4)-gauged supergravity admitting a dS4 solution. As for their AdS cousins, the internal geometries of these uplifts consist of two S2 fibred over a Riemann surface Σ, and are classified by pairs of harmonic functions h1, 2 on Σ, providing a new family of de Sitter solutions in type IIB. Choosing specific functions h1, 2 on Σ= ℝ × I, we perform an S-fold quotient of the internal space along its non-compact direction. This S-folding allows us to evade the assumptions of the Maldacena-Nunez no-go theorem and provides a classical de Sitter solution of type IIB supergravity with finite and non-vanishing four-dimensional effective Newton constant.
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BibTeX
@misc{sterckx2026sitter,
title = {{de Sitter and S-folds in type IIB from $\mathcalN = 4$ $D = 4$ gauged supergravity}},
author = {Colin Sterckx},
howpublished = {arXiv},
year = {2026},
month = oct,
doi = {10.48550/arxiv.2609.05004},
eprint = {2609.05004},
archivePrefix = {arXiv},
url = {https://arxiv.org/abs/2609.05004},
}
RIS
TY - UNPB
TI - de Sitter and S-folds in type IIB from 𝒩 = 4 D = 4 gauged supergravity
AU - Colin Sterckx
PY - 2026
DA - 2026/10/06
PB - arXiv
DO - 10.48550/arxiv.2609.05004
UR - https://arxiv.org/abs/2609.05004
AB - In this paper, we classify the type IIB uplifts of the 𝒩=4 D=4 pure SO(4)-gauged supergravity admitting a dS_4 solution. As for their AdS cousins, the internal geometries of these uplifts consist of two S^2 fibred over a Riemann surface Σ, and are classified by pairs of harmonic functions h_1, 2 on Σ, providing a new family of de Sitter solutions in type IIB. Choosing specific functions h_1, 2 on Σ= ℝ × I, we perform an S-fold quotient of the internal space along its non-compact direction. This S-folding allows us to evade the assumptions of the Maldacena-Nunez no-go theorem and provides a classical de Sitter solution of type IIB supergravity with finite and non-vanishing four-dimensional effective Newton constant.
ER -