Fluid Inflation
High Energy Physics - Theory
2015-06-16 v2 Cosmology and Nongalactic Astrophysics
Abstract
In this work we present an inflationary mechanism based on fluid dynamics. Starting with the action for a single barotropic perfect fluid, we outline the procedure to calculate the power spectrum and the bispectrum of the curvature perturbation. It is shown that a perfect barotropic fluid naturally gives rise to a non-attractor inflationary universe in which the curvature perturbation is not frozen on super-horizon scales. We show that a scale-invariant power spectrum can be obtained with the local non-Gaussianity parameter .
Cite
@article{arxiv.1306.2901,
title = {Fluid Inflation},
author = {Xingang Chen and Hassan Firouzjahi and Mohammad Hossein Namjoo and Misao Sasaki},
journal= {arXiv preprint arXiv:1306.2901},
year = {2015}
}
Comments
Minor revisions, discussions improved, new references added, JCAP published version