English

Higgs inflation with non-minimal derivative coupling to gravity

General Relativity and Quantum Cosmology 2020-05-18 v2 High Energy Physics - Theory

Abstract

We consider an extension of Higgs inflation in which the Higgs field is non-minimally coupled to gravity through its kinetic term. We analyzed power-law coupling functions with positive or negative integer power and found that the Higgs boson can drive a successful inflation only for the cases n=2,1,0,1n=2,1,0,-1. Theoretical predictions for both tensor to scalar ratio rr and scalar spectral index nsn_s are within the 2018 \textit{Planck} 95%95\% CL. The behavior of the self coupling λ\lambda with respect to the scalar field at the horizon crossing was obtained, and It was found that it can take values in the interval λ(107,0.3)\lambda\sim (10^{-7}, 0.3).

Keywords

Cite

@article{arxiv.1911.02901,
  title  = {Higgs inflation with non-minimal derivative coupling to gravity},
  author = {L. N. Granda and D. F. Jimenez and W. Cardona},
  journal= {arXiv preprint arXiv:1911.02901},
  year   = {2020}
}

Comments

17 pages, 3 figures Major changes: theoretical framework extended, 3 figures added, discussion section revised, references added, 25 pages