%0 Journal Article
%T Effects of Radiation on Primordial Non-Gaussianity
%A Suratna Das
%J Physics
%D 2012
%I arXiv
%R 10.1088/1742-6596/484/1/012055
%X 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 $\tau_{NL}$ is larger than $f_{NL}$ which can be a signature of such a pre-inflationary radiation era.
%U http://arxiv.org/abs/1204.0763v1