2003/01/31 by Nima Arkani–Hamed, Nima Arkani-Hamed, Hsin-Chia Cheng +2 · 2 citations
Physics and Astronomy · #Black Holes and Theoretical Physics #Cosmology and Gravitation Theories #Dark Matter and Cosmic Phenomena #astro-ph #hep-ph #hep-th
paper · pdf · doi:10.1103/physrevlett.90.221302
published as Phys.Rev.Lett.90:221302,2003 · 4 pages. Minor corrections and references added. Accepted for PRL
arxiv created 2003/05/20 · openalex publication_date 2003/06/05 · arxiv updated 2009/11/30 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28
We present a new model of inflation in which the inflaton is the extra component of a gauge field in a 5D theory compactified on a circle. The chief merit of this model is that the potential comes only from nonlocal effects so that its flatness is not spoiled by higher-dimensional operators or quantum gravity corrections. The model predicts a red spectrum (n approximately 0.96) and a significant production of gravitational waves (r approximately 0.11). We also comment on the relevance of this idea to quintessence.