Non-Gaussianity in fluctuations from warm inflation

By I. Moss, Chunguang Xiong. 2007

142 citations recorded by the source corpus.

The scalar mode density perturbations in the warm inflationary scenario are analysed with a view to predicting the amount of non-Gaussianity produced by this scenario. The analysis assumes that the inflaton evolution is strongly damped by the radiation, with damping terms that are temperature independent. Entropy fluctuations during warm inflation play a crucial role in generating non-Gaussianity and result in a distinctive signal which should be observable by the Planck satellite.

Subfields: Astronomy and Astrophysics, Statistical and Nonlinear Physics

View Paper: https://www.semanticscholar.org/paper/d08280f9dbc393464c08b454132551ea3f877ad4

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In Astronomy and Astrophysics

In Statistical and Nonlinear Physics

Citations in the corpus

General CMB and primordial bispectrum estimation: Mode expansion, map making, and measures of F NL (2009, methodology): “Below we renormalise published and model-dependent constraints on fNL into the integrated bispectral measure FNL, using the expression (102) together with accurate calculations of Bl1l2l3 for each model: −4 < f local NL < 80 [7] ⇒ −4 < F local NL < 80 (106) −125 < f equil NL < 435 [10] ⇒ −24 < F equ”
The DESI Experiment Part I: Science,Targeting, and Survey Design (2016, background): “Recently, a number of inflationary models have been proposed which predict a potentially observable level of non-Gaussianity, these include those from fast-roll inflation [130, 131, 132, 133, 134], quasi-single field inflation [135, 136], warm inflation [137, 138], and non-Bunch-Davies or excited in”
Planck 2018 results. IX. Constraints on primordial non-Gaussianity (2019, methodology): “Warm inflation As in previous analyses (PCNG13; PCNG15), we adopt the expression f warmNL = −15 ln (1 + rd/14) − 5/2 (Moss & Xiong 2007).”
Non-Gaussianities in single field inflation and their optimal limits from the WMAP 5-year data (2009, background): “KMS would like to thank the hospitality of the Department of Astrophysics at Princeton University, where this work was partially carried out.”
Primordial Non-Gaussianities from Inflation Models (2010, background): “For example, such cases can happen in multifield models where there are particle creation [82, 83] (see however [84]).”