Anisotropic inflation in Gauss-Bonnet gravity
High Energy Physics - Theory
2016-10-06 v2
Abstract
We study anisotropic inflation with Gauss-Bonnet correction in presence of a massless vector field. In this scenario, exact anisotropic power-law inflation is realized when the inflaton potential, gauge coupling function and the Gauss-Bonnet coupling are exponential functions. We show that anisotropy becomes proportional to two slow-roll parameters of the theory and hence gets enhanced in presence of quadratic curvature corrections. The stability analysis reveals that anisotropic power-law solutions remain stable over a substantially large parameter region.
Keywords
Cite
@article{arxiv.1605.09247,
title = {Anisotropic inflation in Gauss-Bonnet gravity},
author = {Sayantani Lahiri},
journal= {arXiv preprint arXiv:1605.09247},
year = {2016}
}
Comments
25 pages, 7 figures, typos corrected, published in JCAP