Renormalization Group Equations of Higgs-$R^2$ Inflation

Understand

We derive one- and two-loop renormalization group equations (RGEs) of Higgs-$R^2$ inflation.

• This model has a non-minimal coupling between the Higgs and the Ricci scalar and a Ricci scalar squared term on top of the standard model.
• The RGEs derived in this paper are valid as long as the energy scale of interest (in the Einstein frame) is below the Planck scale.
• We also discuss implications to the inflationary predictions and the electroweak vacuum metastability.