Effects of Radiation on Primordial Non-Gaussianity
Cosmology and Nongalactic Astrophysics
2014-03-11 v1 General Relativity and Quantum Cosmology
High Energy Physics - Phenomenology
Abstract
We study the non-Gaussian features in single-field slow-roll inflationary scenario where inflation is preceded by a radiation era. In such a scenario both bispectrum and trispectrum non-Gaussianities are enhanced. Interestingly, the trispectrum in this scenario does not depend up on the slow-roll parameters and thus is larger than which can be a signature of such a pre-inflationary radiation era.
Cite
@article{arxiv.1204.0763,
title = {Effects of Radiation on Primordial Non-Gaussianity},
author = {Suratna Das},
journal= {arXiv preprint arXiv:1204.0763},
year = {2014}
}
Comments
Based on the talk presented in the ICGC - 2011, held at Goa during December 14 - 19, 2011 : Contribution to the proceedings for the same