Critical Points in Palatini Higgs Inflation with Small Non-Minimal Coupling

Understand

We investigate inflation driven by the Higgs boson in the Palatini formulation of General Relativity.

• Our analysis primarily focuses on a small non-minimal coupling of the Higgs field to gravity in the range $0<\xi\lesssim 1$.
• We incorporate the renormalization group running of the relevant parameters as computed within the Standard Model and allow for small corrections.
• In addition to $\xi$, our model features two tunable parameters: the low-energy value of the top Yukawa coupling and an effective jump of the Higgs self-interaction.