Polytropic equation of state and primordial quantum fluctuations
Cosmology and Nongalactic Astrophysics
2015-06-17 v3 General Relativity and Quantum Cosmology
Abstract
We study the primordial Universe in a cosmological model where inflation is driven by a fluid with a polytropic equation of state . We calculate the dynamics of the scalar factor and build a Universe with constant density at the origin. We also find the equivalent scalar field that could create such equation of state and calculate the corresponding slow-roll parameters. We calculate the scalar perturbations, the scalar power spectrum and the spectral index.
Keywords
Cite
@article{arxiv.1310.2917,
title = {Polytropic equation of state and primordial quantum fluctuations},
author = {R. C. Freitas and S. V. B. Gonçalves},
journal= {arXiv preprint arXiv:1310.2917},
year = {2015}
}
Comments
16 pages, 4 figures