Cosmological constraints on the curvaton web parameters
Cosmology and Nongalactic Astrophysics
2013-07-22 v2 High Energy Physics - Phenomenology
Abstract
We consider the mixed inflaton-curvaton scenario in which quantum fluctuations of the curvaton field during inflation lead to a relatively large curvature perturbation spectrum at small scales. We use the model of chaotic inflation with quadratic potential including supergravity corrections leading to a large positive tilt in the power spectrum of the curvaton field. The model is characterized by the strongly inhomogeneous curvaton field in the Universe and large non-Gaussianity of curvature perturbations at small scales. We obtained the constraints on the model parameters considering the process of primordial black hole (PBH) production in radiation era.
Cite
@article{arxiv.1212.6529,
title = {Cosmological constraints on the curvaton web parameters},
author = {Edgar Bugaev and Peter Klimai},
journal= {arXiv preprint arXiv:1212.6529},
year = {2013}
}
Comments
v2: 11 pages, 5 figures. Extended version accepted by Phys. Rev. D