How to Produce an Arbitrarily Small Tensor to Scalar Ratio
Cosmology and Nongalactic Astrophysics
2019-06-13 v2 General Relativity and Quantum Cosmology
Abstract
We construct a toy a model which demonstrates that large field single scalar inflation can produce an arbitrarily small scalar to tensor ratio in the window of e-foldings recoverable from CMB experiments. This is done by generalizing the -attractor models to allow the potential to approach a constant as rapidly as we desire for super-planckian field values. This implies that a non-detection of r alone can never rule out entirely the theory of large field inflation.
Keywords
Cite
@article{arxiv.1703.07225,
title = {How to Produce an Arbitrarily Small Tensor to Scalar Ratio},
author = {Daniel J. Brooker},
journal= {arXiv preprint arXiv:1703.07225},
year = {2019}
}