NATURAL INFLATION, PLANCK SCALE PHYSICS AND OSCILLATING PRIMORDIAL SPECTRUM

2002/09/30 by XIULIAN WANG, Xiulian Wang, Bo Feng +7 · 41 citations
Earth and Planetary Sciences · Physics and Astronomy · #Anisotropy #Cosmic background radiation #Cosmic microwave background #Cosmology and Gravitation Theories #Earth Systems and Cosmic Evolution #Inflation (cosmology) #Inflaton #Planck #Planck scale #Primordial fluctuations #Relativity and Gravitational Theory #Spectral density #astro-ph #hep-ph #hep-th

paper · pdf · doi:10.1142/s0218271805006985

published in International Journal of Modern Physics D 14(08), 1347-1364 (World Scientific) · 20 pages, 11 figures. To appear in Int J Mod. Phys. D

arxiv created 2005/04/27 · openalex publication_date 2005/08/01 · arxiv updated 2009/11/30 · openalex created_date 2016/06/24 · openalex updated_date 2026/08/05

Abstract

In the "natural inflation" model, the inflaton potential is periodic. We show that Planck scale physics may induce corrections to the inflaton potential, which is also periodic with a greater frequency. Such high frequency corrections produce oscillating features in the primordial fluctuation power spectrum, which are not entirely excluded by the current observations and may be detectable in high precision data of cosmic microwave background (CMB) anisotropy and large scale structure (LSS) observations.

Citations

• The 2dF Galaxy Redshift Survey: the power spectrum and the matter content of the Universe
• A more accurate analytic calculation of the spectrum of cosmological perturbations produced during inflation
• Possible Detection of Baryonic Fluctuations in the Large‐Scale Structure Power Spectrum
• A flat Universe from high-resolution maps of the cosmic microwave background radiation
• The 2dF QSO Redshift Survey – IV. The QSO power spectrum from the 10k catalogue
• CDM models with a BSI step-like primordial spectrum and a cosmological constant
• Particle Physics Models of Inflation and the Cosmological Density Perturbation