A note on accelerating cosmologies from compactifications and S-branes

By Roberto Emparan, J. Garriga. 2003

132 citations recorded by the source corpus.

We give a simple interpretation of the recent solutions for cosmologies with a transient accelerating phase obtained from compactification in hyperbolic manifolds, or from S-brane solutions of string/M-theory. In the four-dimensional picture, these solutions correspond to bouncing the radion field off its exponential potential. Acceleration occurs at the turning point, when the radion stops and the potential energy momentarily dominates. The virtues and limitations of these approaches become quite transparent in this interpretation.

Subfields: Astronomy and Astrophysics, Nuclear and High Energy Physics, Statistical and Nonlinear Physics

View Paper: https://www.semanticscholar.org/paper/97f697d6027dda86b77403a88b9c7acef00cad7a

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Citations in the corpus

Time‐dependent orbifolds and string cosmology (2003, unknown): “The fact that a period of transient acceleration is quite generic, whenever the kinetic energy vanishes and the potential is positive, was shown in the context of String/M–theory compactifications in [103].”
The Landscape, the Swampland and the Era of Precision Cosmology (2018, methodology): “As we already mentioned, the first model proposed in [21] practically coincides with the model studied long time ago in [107, 108].”
Accelerating cosmologies from M/String theory compactifications (2003, background): “accelerating expansion can be found even in this case for t0 18 , 20].”