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Title: Inflationary gravitational waves and the evolution of the early universe

We study the effects of various phenomena which may have happened in the early universe on the spectrum of inflationary gravitational waves. The phenomena include phase transitions, entropy productions from non-relativistic matter, the production of dark radiation, and decoupling of dark matter/radiation from thermal bath. These events can create several characteristic signatures in the inflationary gravitational wave spectrum, which may be direct probes of the history of the early universe and the nature of high-energy physics.
Authors:
; ;  [1]
  1. Department of Physics, University of Tokyo, 7-3-1 Bunkyo-ku, Hongo, Tokyo 113-0033 (Japan)
Publication Date:
OSTI Identifier:
22369796
Resource Type:
Journal Article
Resource Relation:
Journal Name: Journal of Cosmology and Astroparticle Physics; Journal Volume: 2014; Journal Issue: 01; Other Information: Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
79 ASTROPHYSICS, COSMOLOGY AND ASTRONOMY; 72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS; DECOUPLING; ENTROPY; EVOLUTION; GRAVITATIONAL WAVES; HIGH ENERGY PHYSICS; NONLUMINOUS MATTER; PHASE TRANSFORMATIONS; PROBES; RELATIVISTIC RANGE; SPECTRA; UNIVERSE