Inflation from wrapped branes

2007/09/30 by Melanie Becker, Louis Leblond, Sarah Shandera · 5 citations
Physics and Astronomy · #Black Holes and Theoretical Physics #Cosmology and Gravitation Theories #Galaxies: Formation, Evolution, Phenomena #astro-ph #hep-th

paper · pdf · doi:10.1103/physrevd.76.123516

published as Phys.Rev.D76:123516,2007 · 13 pages, 2 figures; v2 typos corrected, minor additions, added references

arxiv created 2007/10/17 · openalex publication_date 2007/12/28 · arxiv updated 2009/12/01 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28

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.

Citations

• The String Dual of a Confining Four-Dimensional Gauge Theory
• Scales and hierarchies in warped compactifications and brane worlds
• What Would We Learn by Detecting a Gravitational Wave Signal in the Cosmic Microwave Background Anisotropy?
• IR inflation from multiple branes
• de Sitter Vacua in String Theory
• A Delicate Universe: Compactification Obstacles to D-brane Inflation

Cited by

• Spinflation from geometric tachyon
• Axion inflation in type II string theory
• The D5-brane effective action and superpotential in N=1 compactifications
• Observational signatures of gravitational couplings in DBI inflation
• Multi-field DBI inflation: introducing bulk forms and revisiting the gravitational wave constraints