DBI inflation with a non-minimally coupled Gauss-Bonnet term
Cosmology and Nongalactic Astrophysics
2015-06-17 v1 General Relativity and Quantum Cosmology
High Energy Physics - Theory
Abstract
We study the inflation in a model with a Gauss-Bonnet term which is non-minimally coupled to a DBI field. We study the spectrum of the primordial perturbations in detail. The non-Gaussianity of this model is considered and the amplitude of the non-Gaussianity is studied in both the equilateral and orthogonal configurations. By taking various functions of the DBI field, inflaton potential and the Gauss-Bonnet coupling term, we test the model with observational data and find some constraints on the Gauss-Bonnet coupling parameter.
Keywords
Cite
@article{arxiv.1310.3989,
title = {DBI inflation with a non-minimally coupled Gauss-Bonnet term},
author = {Kourosh Nozari and Narges Rashidi},
journal= {arXiv preprint arXiv:1310.3989},
year = {2015}
}
Comments
31 pages, 6 figures, to appear in Phys. Rev. D