Low power on large scales in just-enough inflation models

2012/02/29 by Erandy Ramirez, Erandy Ramírez
Mathematics · Physics and Astronomy · #Astrophysics #Black Holes and Theoretical Physics #Classical mechanics #Cosmological model #Cosmology #Cosmology and Gravitation Theories #Energy (signal processing) #Field (mathematics) #Galaxies: Formation, Evolution, Phenomena #Geometry #Inflation (cosmology) #Kinetic energy #Mathematics #Physics #Quadratic equation #Quadrupole #Quantum mechanics #Sigma #Spectral density #Statistical physics #Statistics #Theoretical physics #astro-ph.CO

paper · pdf · doi:10.1103/physrevd.85.103517

published as Phys. Rev. D 85, 103517 (2012) · 8 pages, 8 figures references and new acknowledgement added, accepted for publication

openalex publication_date 2012/05/16 · arxiv created 2012/06/26 · arxiv updated 2012/06/27 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/05

Abstract

An early stage of kinetic energy domination for inflation is applied to single-field quadratic and hybrid-type potentials considering only the amount of inflation necessary to solve the problems of the standard cosmological scenario. Using initial conditions inside the 1-sigma interval of the best-fit cosmological parameters for the potentials, low values for the quadrupole component can be obtained.

Citations

• Suppressing the lower multipoles in the CMB anisotropies
• Pre-inflationary vacuum in the cosmic microwave background
• Is the Low-ℓMicrowave Background Cosmic?
• A more accurate analytic calculation of the spectrum of cosmological perturbations produced during inflation
• Hybrid inflation along waterfall trajectories
• Preinflationary and inflationary fast-roll eras and their signatures in the low CMB multipoles
• ϕ4inflation is not excluded
• First‐Year Wilkinson Microwave Anisotropy Probe ( WMAP ) Observations: Determination of Cosmological Parameters
• No large-angle correlations on the non-Galactic microwave sky
• Chaotic inflation