Influence on Starobinsky inflation by other fields with large amplitude
High Energy Physics - Phenomenology
2016-05-25 v2 Cosmology and Nongalactic Astrophysics
Abstract
The Starobinsky model is one of the inflation models consistent with the result of CMB observation by the Planck satellite. We consider the dynamics of the Starobinsky inflation in the presence of another scalar field with a large expectation value during inflation due to a negative Hubble-induced mass. We find that it would be affected if the other field has an amplitude close to the Planck scale. In this case, we may observe such effects on the Starobinsky model by future CMB experiments.
Keywords
Cite
@article{arxiv.1602.08300,
title = {Influence on Starobinsky inflation by other fields with large amplitude},
author = {Shinta Kasuya and Kanto Moritake},
journal= {arXiv preprint arXiv:1602.08300},
year = {2016}
}
Comments
5 pages, 9 figures, discussions on the tensor-to-scalar ratio and the verification of the scenario by future CMB experiments are added, matches to published version