https://scholars.lib.ntu.edu.tw/handle/123456789/639581
Title: | On soft limits of inflationary correlation functions | Authors: | Assassi, Valentin Daniel Baumann Green, Daniel |
Keywords: | inflation | non-gaussianity | Issue Date: | 1-Nov-2012 | Journal Volume: | 2012 | Journal Issue: | 11 | Source: | Journal of Cosmology and Astroparticle Physics | Abstract: | Soft limits of inflationary correlation functions are both observationally relevant and theoretically robust. Various theorems can be proven about them that are insensitive to detailed model-building assumptions. In this paper, we re-derive several of these theorems in a universal way. Our method makes manifest why soft limits are such an interesting probe of the spectrum of additional light fields during inflation. We illustrate these abstract results with a detailed case study of the soft limits of quasi-single-field inflation. © 2012 IOP Publishing Ltd and Sissa Medialab srl. |
URI: | https://scholars.lib.ntu.edu.tw/handle/123456789/639581 | ISSN: | 1475-7516 | DOI: | 10.1088/1475-7516/2012/11/047 |
Appears in Collections: | 物理學系 |
Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.