Higher order non-linear parameters with PLANCK
Cosmology and Nongalactic Astrophysics
2014-01-29 v2 General Relativity and Quantum Cosmology
High Energy Physics - Phenomenology
High Energy Physics - Theory
Abstract
We investigate how higher order non-linear parameters affect lower order ones through loop effects. We calculate the loop corrections up to two-loops and explicitly show that the tree contribution is stable against loop terms in most cases. We argue that, nevertheless, observational constraints on non-linear parameters such as fNL and tauNL can also give a limit even for higher order ones due to the loop contribution. We discuss these issues both for single-source and multi-source cases.
Cite
@article{arxiv.1309.2917,
title = {Higher order non-linear parameters with PLANCK},
author = {Jinn-Ouk Gong and Tomo Takahashi},
journal= {arXiv preprint arXiv:1309.2917},
year = {2014}
}
Comments
(v1) 25 pages, 12 figures; (v2) More clarifications, to appear in Physical Review D