Conveners
Oral Comunication: Exploring the Higher-Order Extension of Starobinsky Inflation: Dynamics and Reheating
- Jeremias Bezerra-Sobrinho (UFRN)
Description
Higher-order theories of gravity are extensions to general relativity motivated mainly by high-energy physics searching for general relativity ultraviolet completeness. They are characterized by the inclusion of correction terms in the Einstein-Hilbert action that leads to higher-order field equations. In particular, we are interested in analyzing higher-order extension of Starobinsky inflation, namely, R³ and R□R. We investigate inflation within the Friedmann cosmological background, where we study the phase space of the model, as well as explore inflation in slow-roll leading-order. Furthermore, we describe the evolution of scalar perturbations. Finally, we confront the proposed model with recent observations from Planck, BICEP3/Keck, and BAO data.
