Inflation model with lower multipoles of the CMB suppressed

2003/05/31 by Masahiro Kawasaki, Fuminobu Takahashi · 3 citations
Earth and Planetary Sciences · Physics and Astronomy · #Cosmology and Gravitation Theories #Geophysics and Gravity Measurements #Relativity and Gravitational Theory #astro-ph #hep-ph

paper · pdf · doi:10.1016/j.physletb.2003.08.005

published as Phys.Lett. B570 (2003) 151-153 · 4 pages, 1 figure. Some references and 1 figure are added

arxiv created 2003/07/29 · openalex publication_date 2003/09/01 · arxiv updated 2009/11/30 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/01

Abstract

The recent observation of the cosmic microwave background anisotropy by the WMAP confirmed that the lower multipoles are considerably suppressed. From the standpoint of the cosmic variance, it is nothing but a statistical accident. Alternatively, one can attribute the deficit of fluctuation on the large scale to the cosmic history, which might be explained in the context of the inflationary physics. In this Letter, we show that it is possible to explain the suppressed lower multipoles in the hybrid new inflation model.

Citations

• First Year Wilkinson Microwave Anisotropy Probe (WMAP) Observations: Preliminary Maps and Basic Results

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