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arXiv · 1911.02901

Higgs inflation with non-minimal derivative coupling to gravity

L. N. Granda·D. F. Jimenez·W. Cardona
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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 $n=2,1,0,-1$. Theoretical predictions for both tensor to scalar ratio $r$ and scalar spectral index $n_s$ are within the 2018 \textit{Planck} $95\%$ CL. The behavior of the self coupling $λ$ with respect to the scalar field at the horizon crossing was obtained, and It was found that it can take values in the interval $λ\sim (10^{-7}, 0.3)$.

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L. N. Granda, D. F. Jimenez, W. Cardona. 2020-05-15. Higgs inflation with non-minimal derivative coupling to gravity. https://doi.org/10.1016/j.astropartphys.2020.102459

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