2004/01/09 by L. Pilo, L Pilo, A. Riotto +3 · 2 citations
Physics and Astronomy · #Black Holes and Theoretical Physics #Cosmological constant #Cosmology and Gravitation Theories #Energy condition #False vacuum #Galaxies: Formation, Evolution, Phenomena #Inflation (cosmology) #Inflaton #Metric (unit) #String (physics) #String theory #Vacuum energy #Vacuum state #astro-ph #hep-ph #hep-th
paper · pdf · doi:10.1088/1126-6708/2004/07/052
published as JHEP 0407 (2004) 052 · 31 pages, 3 figures; typos corrected and reference added
arxiv created 2004/01/09 · openalex publication_date 2004/07/23 · arxiv updated 2009/12/01 · openalex created_date 2016/06/24 · openalex updated_date 2026/08/05
We propose a stringy version of the old inflation scenario which does not require any slow-roll inflaton potential and is based on a specific example of string compatification with warped metric. Our set-up admits the presence of anti-D3-branes in the deep infrared region of the metric and a false vacuum state with positive vacuum energy density. The latter is responsible for the accelerated period of inflation. The false vacuum exists only if the number of anti-D3-branes is smaller than a critical number and the graceful exit from inflation is attained if a number of anti-D3-branes travels from the ultraviolet towards the infrared region. The cosmological curvature perturbation is generated through the curvaton mechanism.