2009/10/31 by S.-H. Henry Tye, S. -H. Henry Tye, Jiajun Xu · 30 citations
Physics and Astronomy · #Astrophysics #Black Holes and Theoretical Physics #COSMIC cancer database #Cosmic background radiation #Cosmic microwave background #Cosmic string #Cosmology and Gravitation Theories #Galaxies: Formation, Evolution, Phenomena #Inflation (cosmology) #Inflaton #Particle physics #Physics #Planck #Quantum mechanics #Spectral density #String (physics) #Theoretical physics #astro-ph.CO #gr-qc #hep-ph #hep-th
paper · pdf · doi:10.1016/j.physletb.2009.12.045
published in Physics Letters B 683(4-5), 326-330 (Elsevier BV) · minor additions, matched to published version
openalex publication_date 2009/12/29 · arxiv created 2010/01/14 · arxiv updated 2010/02/08 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/05
If the cosmological inflationary scenario took place in the cosmic landscape in string theory, the inflaton, the scalar mode responsible for inflation, would have meandered in a complicated multi-dimensional potential. We show that this meandering property naturally leads to many e-folds of inflation, a necessary condition for a successful inflationary scenario. This behavior also leads to fluctuations in the primordial power spectrum of the cosmic microwave background radiation, which may be detected in a near future cosmic variance limited experiment like PLANCK.