| Article | |
| Report number | arXiv:1111.2721 ; CERN-PH-TH-2011-282 |
| Title | Inhomogeneous non-Gaussianity |
| Author(s) | Byrnes, Christian T. (CERN) ; Nurmi, Sami (Nordita) ; Tasinato, Gianmassimo (Portsmouth U., ICG) ; Wands, David (Portsmouth U., ICG) |
| Publication | 2012 |
| Imprint | 14 Nov 2011 |
| Number of pages | 16 p, 16 |
| Note | Comments: 16 pages, 2 figures 16 pages, 2 figures/ v2: Minor changes and references added. Matches the published version |
| In: | JCAP 03 (2012) 012 |
| DOI | 10.1088/1475-7516/2012/03/012 |
| Subject category | Astrophysics and Astronomy |
| Abstract | We propose a method to probe higher-order correlators of the primordial density field through the inhomogeneity of local non-Gaussian parameters, such as f_NL, measured within smaller patches of the sky. Correlators between n-point functions measured in one patch of the sky and k-point functions measured in another patch depend upon the (n+k)-point functions over the entire sky. The inhomogeneity of non-Gaussian parameters may be a feasible way to detect or constrain higher-order correlators in local models of non-Gaussianity, as well as to distinguish between single and multiple-source scenarios for generating the primordial density perturbation, and more generally to probe the details of inflationary physics. |
| Copyright/License | Preprint: © 2011-2025 CERN (License: CC-BY-3.0) |
Corresponding record in: Inspire
Record created 2011-11-14, last modified 2023-03-14
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