A new class of de Sitter vacua in type IIB large volume compactifications
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Publication:1706650
DOI10.1007/JHEP10(2017)193zbMATH Open1383.83207arXiv1707.01095OpenAlexW3104269941MaRDI QIDQ1706650
Author name not available (Why is that?)
Publication date: 27 March 2018
Published in: (Search for Journal in Brave)
Abstract: We construct a new class of metastable de Sitter vacua of flux compactifications of type IIB string theory. These solutions provide a natural extension of the `Large Volume Scenario' anti-de Sitter vacua, and can analogously be realised at parametrically large volume and weak string coupling, using standard supergravity. For these new vacua, a positive vacuum energy is achieved from the inclusion of a small amount of flux-induced supersymmetry breaking in the complex structure and axio-dilaton sector, and no additional `uplift' contribution (e.g.~from anti-branes) is required. We show that the approximate no-scale structure of the effective theory strongly influences the spectrum of the stabilised moduli: one complex structure modulus remains significantly lighter than the supersymmetry breaking scale, and metastability requires only modest amounts of tuning. After discussing these general results, we provide a recipe for constructing de Sitter vacua on a given compactification manifold, and give an explicit example of a de Sitter vacuum for the compactification on the Calabi-Yau orientifold realised in . Finally, we note that these solutions have intriguing implications for phenomenology, predicting no superpartners in the spectrum below 50 TeV, and no WIMP dark matter.
Full work available at URL: https://arxiv.org/abs/1707.01095
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