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Lookup NU author(s): Professor Ian Moss
This work is licensed under a Creative Commons Attribution-NonCommercial 4.0 International License (CC BY-NC 4.0).
The theory and methodology is developed to compute the bispectrum in warm inflation, leading to results for the non-linearity parameter and the shape of the bispectrum. Particular attention is paid to the study of the bispectrum in the regime of weak dissipation and how stochastic fluctuations affect the bispectrum. It is shown that, in contrast to the strong dissipative regime, the amplitude of non-Gaussianity is strongly dependent on the parameters governing the microscopic physics in the intermediate and weak dissipation warm inflation regimes. The most important results concern the shape of the bispectrum, which has two different, but distinct, forms in the weak and strong dissipative regimes.
Author(s): Bastero-Gil M, Berera A, Moss IG, Ramos RO
Publication type: Article
Publication status: Published
Journal: Journal of Cosmology and Astroparticle Physics
Online publication date: 04/12/2014
Acceptance date: 28/10/2014
Date deposited: 19/01/2016
ISSN (electronic): 1475-7516
Publisher: IOP Publishing Ltd
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