Potential reconstruction from general power spectrum in single-field inflation
Cosmology and Nongalactic Astrophysics
2022-01-12 v2 General Relativity and Quantum Cosmology
High Energy Physics - Phenomenology
Abstract
We suggest a new method to reconstruct, within canonical single-field inflation, the inflaton potential directly from the primordial power spectrum which may deviate significantly from near scale-invariance. Our approach relies on a more generalized slow-roll approximation than the standard one, and can probe the properties of the inflaton potential reliably. We give a few examples for reconstructing potential and discuss the validity of our method.
Keywords
Cite
@article{arxiv.2109.14241,
title = {Potential reconstruction from general power spectrum in single-field inflation},
author = {Ki-Young Choi and Jinn-Ouk Gong and Su-beom Kang and Rathul Nath Raveendran},
journal= {arXiv preprint arXiv:2109.14241},
year = {2022}
}
Comments
(v1) 12 pages, 2 figures; (v2) 13 pages, more clarifications, to appear in Journal of Cosmology and Astroparticle Physics