Journal of High Energy Physics

, 2012:163 | Cite as

Building an explicit de Sitter

  • Jan Louis
  • Markus RummelEmail author
  • Roberto Valandro
  • Alexander Westphal
Open Access


We construct an explicit example of a de Sitter vacuum in type IIB string theory that realizes the proposal of Kähler uplifting. As the large volume limit in this method depends on the rank of the largest condensing gauge group we carry out a scan of gauge group ranks over the Kreuzer-Skarke set of toric Calabi-Yau threefolds. We find large numbers of models with the largest gauge group factor easily exceeding a rank of one hundred. We construct a global model with Kähler uplifting on a two-parameter model on \( \mathbb{CP}_{11169}^4 \), by an explicit analysis from both the type IIB and F-theory point of view. The explicitness of the construction lies in the realization of a D7 brane configuration, gauge flux and RR and NS flux choices, such that all known consistency conditions are met and the geometric moduli are stabilized in a metastable de Sitter vacuum with spontaneous GUT scale supersymmetry breaking driven by an F-term of the Kähler moduli.


Flux compactifications F-Theory dS vacua in string theory Superstring Vacua 


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Copyright information

© SISSA 2012

Authors and Affiliations

  • Jan Louis
    • 1
    • 2
  • Markus Rummel
    • 1
    Email author
  • Roberto Valandro
    • 1
  • Alexander Westphal
    • 3
  1. 1.II. Institut für Theoretische Physik der Universität HamburgHamburgGermany
  2. 2.Zentrum für Mathematische PhysikUniversität HamburgHamburgGermany
  3. 3.Theory Group, Deutsches Elektronen-Synchrotron DESYHamburgGermany

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