de Sitter vacua in string theory | Zendy

Shamit Kachru | Zendy; Рената Каллош | Zendy; Andrei Linde | Zendy; Sandip P. Trivedi | Zendy

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de Sitter vacua in string theory

Author(s) -

Shamit Kachru,

Рената Каллош,

Andrei Linde,

Sandip P. Trivedi

Publication year - 2003

Publication title -

physical review. d. particles, fields, gravitation, and cosmology/physical review. d. particles and fields

Language(s) - English

Resource type - Journals

eISSN - 1089-4918

pISSN - 0556-2821

DOI - 10.1103/physrevd.68.046005

Subject(s) - physics , de sitter universe , superpotential , string theory , instanton , theoretical physics , de sitter space , string (physics) , metastability , mathematical physics , f theory , brane , moduli space , supersymmetry , quantum mechanics , geometry , universe , mathematics

We outline the construction of metastable de Sitter vacua of type IIB stringtheory. Our starting point is highly warped IIB compactifications withnontrivial NS and RR three-form fluxes. By incorporating known corrections tothe superpotential from Euclidean D-brane instantons or gaugino condensation,one can make models with all moduli fixed, yielding a supersymmetric AdSvacuum. Inclusion of a small number of anti-D3 branes in the resulting warpedgeometry allows one to uplift the AdS minimum and make it a metastable deSitter ground state. The lifetime of our metastable de Sitter vacua is muchgreater than the cosmological timescale of 10^10 years. We also prove, undercertain conditions, that the lifetime of dS space in string theory will alwaysbe shorter than the recurrence time.Comment: 12 pages, 2 figs, added comments on the thin wall approximation to tunnelin

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