Accelerating Universes from Compactification on a Warped Conifold

Journal Article · Fri Feb 09 04:00:00 EST 2007 · Physical Review Letters

DOI:https://doi.org/10.1103/PHYSREVLETT.98.061301· OSTI ID:20955438

Neupane, Ishwaree P ^[1]

---

1. Department of Physics and Astronomy, University of Canterbury, Private Bag 4800, Christchurch 8020 (New Zealand)

We find a cosmological solution corresponding to the compactification of 10D supergravity on a warped conifold that easily circumvents the ''no-go'' theorem given for a warped or 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.

• OSTI ID: 20955438
• Journal Information: Physical Review Letters, Journal Name: Physical Review Letters Journal Issue: 6 Vol. 98; ISSN 0031-9007; ISSN PRLTAO
• Country of Publication: United States
• Language: English

Related Subjects

71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
COMPACTIFICATION
COORDINATES
COSMOLOGICAL MODELS
COSMOLOGY
EXPANSION
FOUR-DIMENSIONAL CALCULATIONS
MATHEMATICAL SOLUTIONS
SUPERGRAVITY
SUPERSTRING MODELS
SUPERSTRING THEORY
UNIVERSE