de Sitter vacua in string theory

2003/01/29 by Shamit Kachru, Renata Kallosh, Рената Каллош +2 · 2 voices · 89 citations
Physics and Astronomy · #Black Holes and Theoretical Physics #Cosmology and Gravitation Theories #Particle physics theoretical and experimental studies

paper · pdf · doi:10.1103/physrevd.68.046005

Abstract

We outline the construction of metastable de Sitter vacua of type IIB string theory. Our starting point is highly warped IIB compactifications with nontrivial NS and RR three-form fluxes. By incorporating known corrections to the superpotential from Euclidean D-brane instantons or gaugino condensation, one can make models with all moduli fixed, yielding a supersymmetric AdS vacuum. Inclusion of a small number of D3-branes in the resulting warped geometry allows one to uplift the AdS minimum and make it a metastable de Sitter ground state. The lifetime of our metastable de Sitter vacua is much greater than the cosmological time scale of 10¹⁰yr. We also prove, under certain conditions, that the lifetime of dS space in string theory will always be shorter than the recurrence time.

Citations

• Complex structures on nilpotent Lie algebras
• Observational Evidence from Supernovae for an Accelerating Universe and a Cosmological Constant
• The dS/CFT correspondence
• Disturbing Implications of a Cosmological Constant
• On the Cohomology of Compact Homogeneous Spaces of Nilpotent Lie Groups

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Discussions

• Almost nothing in the swampland community is "beyond doubt". A very short summary of the situation from two years ago is still valid today. If there's a crisis happening, it's simply that the followin [stackexchange, 18 points]
• Although Connor Behan's answer is excellent, I would like to add a little comment on his answer. Old and new proposals for constructing de Sitter vacua are conjectural. The newer paper in fact attempt [stackexchange, 2 points]

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