Curvaton decay into relativistic matter

Details Curvaton decay into relativistic matter Curvaton decay into relativistic matter

2009-12-17

arxiv.org/abs/0912.3394v1

Phys.Rev.D81:083516,2010

Astronomy and Astrophysics

Astrophysics

Cosmology and Extragalactic Astrophysics

10 pages, 3 figures

Scientific paper

10.1103/PhysRevD.81.083516

We consider an inflationary curvaton scenario, where the curvaton decays into two non-interacting relativistic fluids and later during the cosmological evolution one of them becomes non-relativistic, forming dark matter component of the universe. We study the thermic properties and the generation of non-gaussianity in this three fluid curvaton model. By solving the evolution of the system and using several cosmological conditions we find that the allowed parameter space is strongly constrained. The naturalness of this curvaton scenario is also discussed.

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