Work

Inflation from a supersymmetric axion model

Year: 2010

Type: article

Abstract: We show that a supersymmetric axion model naturally induces a hybrid inflation with the waterfall field identified as a Peccei-Quinn scalar. The Peccei-Quinn scale is predicted to be around ${10}^{15}\text{ }\text{ }\mathrm{GeV}$ for reproducing the large-scale density perturbation of the Universe. After the built-in late-time entropy-production process, the axion becomes a dark matter candidate. Several cosmological implications are discussed.

Source: Physical review. D. Particles, fields, gravitation, and cosmology/Physical review. D. Particles and fields

DOI: 10.1103/physrevd.82.123531

Authors: Masahiro Kawasaki, Naoya Kitajima, Kazunori Nakayama

Institutions: Kavli Institute for the Physics and Mathematics of the Universe, Institute for Cosmic Ray Research, The University of Tokyo, High Energy Accelerator Research Organization, Institute of Particle and Nuclear Studies

Language: English

Topic: Cosmology and Gravitation Theories

Subfield: Astronomy and Astrophysics

Field: Physics and Astronomy

Domain: Physical Sciences

Open Access status: green

Funder: Japan Society for the Promotion of Science

Award: Study on evolution of scalar fields in the early universe and its observational consequences