Inflation from wrapped branes

Melanie Becker, Louis Leblond, Sarah Shandera

Research output: Contribution to journalArticlepeer-review

47 Scopus citations

Abstract

We show that the use of higher dimensional wrapped branes can significantly extend the inflaton field range compared to brane inflation models which use D3-branes. We construct a simple inflationary model in terms of 5-branes wrapping a 2-cycle and traveling towards the tip of the Klebanov-Strassler throat. Inflation ends when the branes reach the tip of the cone and self-annihilate. Assuming a quadratic potential for the brane it is possible to match the cosmic microwave background data in the Dirac-Born-Infeld regime, but we argue that the backreaction of the brane is important and cannot be neglected. This scenario predicts a strong non-Gaussian signal and possibly detectable gravitational waves.

Original languageEnglish (US)
Article number123516
JournalPhysical Review D - Particles, Fields, Gravitation and Cosmology
Volume76
Issue number12
DOIs
StatePublished - Dec 28 2007

All Science Journal Classification (ASJC) codes

  • Nuclear and High Energy Physics
  • Physics and Astronomy (miscellaneous)

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