Initial conditions for small-field inflation

2009/03/31 by Michał Spaliński, Michal Spalinski
Mathematics · Physics and Astronomy · #Black Holes and Theoretical Physics #Cosmology and Gravitation Theories #Field (mathematics) #Galaxies: Formation, Evolution, Phenomena #Inflation (cosmology) #Inflaton #Mathematics #Physics #Theoretical physics #astro-ph.CO

paper · pdf · doi:10.1103/physrevd.80.063529

published as Phys.Rev.D80:063529,2009

openalex publication_date 2009/09/24 · arxiv created 2009/10/08 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/05

Abstract

Small-field inflation typically requires rather special initial conditions to commence. It is proposed that in models where the inflaton is an axionlike field, with a periodic contribution to the potential, there is a possibility of significantly enhancing the chances of inflation without any fine-tuning of initial conditions and with no additional fine-tuning of the dynamics beyond what is needed for the potential to support inflation in the first place.

Citations

• Eternally existing self-reproducing chaotic inflanationary universe
• Oscillations in the inflaton potential?
• What Would We Learn by Detecting a Gravitational Wave Signal in the Cosmic Microwave Background Anisotropy?
• Duality cascade in brane inflation
• Axion inflation in type II string theory
• Probing Inflation with CMB Polarization
• Avoiding the blue spectrum and the fine-tuning of initial conditions in hybrid inflation
• A Delicate Universe: Compactification Obstacles to D-brane Inflation
• Hilltop inflation
• Chaotic inflation