de Sitter vacua in string theory

Kachru, Shamit ; Kallosh, Renata ; Linde, Andrei ; Trivedi, Sandip P. (2003) de Sitter vacua in string theory Physical Review D - Particles, Fields, Gravitation and Cosmology, 68 (4). 046005_1-046005_10. ISSN 1550-7998

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Official URL: http://prd.aps.org/abstract/PRD/v68/i4/e046005

Related URL: http://dx.doi.org/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 D3̅ 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 1010 years. We also prove, under certain conditions, that the lifetime of dS space in string theory will always be shorter than the recurrence time.

Item Type:Article
Source:Copyright of this article belongs to The American Physical Society.
ID Code:57600
Deposited On:27 Aug 2011 15:03
Last Modified:18 May 2016 08:56

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