Accelerating Universes from Compactification on a Warped Conifold

Abstract

We find a cosmological solution corresponding to compactification of 10d supergravity on a warped conifold that easily circumvents `no-go' theorem given for a warped/flux compactification, providing new perspectives for the study of supergravity or superstring theory in cosmological backgrounds. With fixed volume moduli of the internal space, the model can explain a physical universe undergoing an accelerated expansion in the 4d Einstein frame, for a sufficiently long time. The solution found in the limit that the warp factor dependent on the radial coordinate $y$ is extremized (giving a constant warping) is smooth and it supports a flat four-dimensional Friedmann-Robertson-Walker cosmology undergoing a period of accelerated expansion with slowly rolling or stabilized volume moduli.

4 revtex pages; clarifications and references added; version accepted for publication in PRL

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Cited by in corpus (20)

• Exploiting N=2 in consistent coset reductions of type IIA
• Brane inflation and the WMAP data: a Bayesian analysis
• Inflation from Wrapped Branes
• Star Models with Dark Energy
• On Anisotropic Dark Energy
• Cosmological constant and late transient acceleration of the universe in the Horava-Witten Heterotic M-Theory on S^{1}/Z_{2}
• Reconstructing a model of quintessential inflation
• Extra dimensions, warped compactifications and cosmic acceleration
• Warped compactification to de Sitter space
• Dual Gauged Supergravities
• Warped de Sitter compactifications
• Simple cosmological de Sitter solutions on dS${}_4\times Y_6$ spaces
• The warping of extra spaces accelerates the expansion of the universe
• Warped compactification on curved manifolds
• A Note on Intersections of S-branes with p-branes
• Late transient acceleration of the universe in string theory on $S^1/Z_2$
• Brane cosmology in the Horava-Witten heterotic M-Theory on $S^1/Z_2$
• The hierarchy problem, radion mass, localization of gravity and 4D effective Newtonian potential in string theory on $S^1/Z_2$
• Potential for the slow-roll inflation, mass scale hierarchy and Dark Energy from the Type IIA supergravity
• Orbifold Branes in the $M_D\times M_{d^{+}}\times M_{d^{-}}$ Compactification of type II string on $S^1/Z_2$ and their cosmological applications