Spectral Index in Curvaton Scenario
High Energy Physics - Theory
2008-11-26 v2 Astrophysics
General Relativity and Quantum Cosmology
High Energy Physics - Phenomenology
Abstract
A red tilted primordial power spectrum is preferred by WMAP five-year data and a large positive local-type non-Gaussianity might be observed as well. In this short note we find that a red tilted and large non-Gaussian primordial power spectrum cannot be naturally obtained in curvaton model, because is related to the initial condition of inflation.
Keywords
Cite
@article{arxiv.0807.0050,
title = {Spectral Index in Curvaton Scenario},
author = {Qing-Guo Huang},
journal= {arXiv preprint arXiv:0807.0050},
year = {2008}
}
Comments
12 pages; refs added