Relaxing constraints on inflation models with curvaton

Journal Article · Fri Jul 15 00:00:00 EDT 2005 · Physical Review. D, Particles Fields

DOI:https://doi.org/10.1103/PhysRevD.72.023502· OSTI ID:20711105

Moroi, Takeo; Toyoda, Yoshikazu ^[1]; Takahashi, Tomo ^[2]

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1. Department of Physics, Tohoku University, Sendai 980-8587 (Japan)
2. Institute for Cosmic Ray Research, University of Tokyo, Kashiwa 277-8582 (Japan)

We consider the effects of the curvaton, late-decaying scalar condensation, to observational constraints on inflation models. From current observations of cosmic density fluctuations, severe constraints on some classes of inflation models are obtained, in particular, on the chaotic inflation with higher-power monomials, the natural inflation, and the new inflation. We study how the curvaton scenario changes (and relaxes) the constraints on these models.

• OSTI ID: 20711105
• Journal Information: Physical Review. D, Particles Fields, Vol. 72, Issue 2; Other Information: DOI: 10.1103/PhysRevD.72.023502; (c) 2005 The American Physical Society; Country of input: International Atomic Energy Agency (IAEA); ISSN 0556-2821
• Country of Publication: United States
• Language: English

Related Subjects

72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
CHAOS THEORY
COSMOLOGY
DENSITY
FLUCTUATIONS
INFLATIONARY UNIVERSE
SCALARS