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arXiv · 2506.19515

Higher co-dimension de Sitter branes

Florian Niedermann·Antonio Padilla
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Abstract

We extend the arguments of Maldacena and N\'u\~nez to include higher co-dimension brane setups and derive a new no-go theorem. Specifically, we show that under reasonable assumptions on the energy-momentum conservation and the bulk curvature, co-dimension-two branes fail to support stable de Sitter solutions. For co-dimensions higher than two embedded in a compact internal space, we show that negative tension sources would be required. This result places strong constraints on the viability of higher-dimensional braneworld models as a means to obtain de Sitter space within string theory.

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Florian Niedermann, Antonio Padilla. 2025-06-24. Higher co-dimension de Sitter branes. https://arxiv.org/abs/2506.19515

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