Preheating after Palatini Higgs Inflation using General Relativity

Higgs inflation, in the Palatini formalism, ends in particularly violent preheating driven by tachyonic instability. This rapid preheating, coupled with instability near the horizon, makes this model a scenario in which black holes might be formed. To test this, we simulate the period immediately after inflation using full numerical relativity. We examine the final state of this period to determine if compact objects can be formed in the wake of this phase transition.