Renormalization Group Improved Higgs Inflation with a Running Kinetic Term
High Energy Physics - Phenomenology
2016-07-21 v3 Cosmology and Nongalactic Astrophysics
High Energy Physics - Experiment
Abstract
We study a Higgs inflation model with a running kinetic term, taking account of the renormalization group evolution of relevant coupling constants. Specifically we study two types of the running kinetic Higgs inflation, where the inflaton potential is given by the quadratic or linear term potential in a frame where the Higgs field is canonically normalized. We solve the renormalization group equations at two-loop level and calculate the scalar spectral index and the tensor-to-scalar ratio. We find that, even if the renormalization group effects are included, the quadratic inflation is ruled out by the CMB observations, while the linear one is still allowed.
Cite
@article{arxiv.1603.07601,
title = {Renormalization Group Improved Higgs Inflation with a Running Kinetic Term},
author = {Fuminobu Takahashi and Ryo Takahashi},
journal= {arXiv preprint arXiv:1603.07601},
year = {2016}
}
Comments
14 pages, 1 figure, published version