Natural inflation in Palatini F ( R )
Abstract
Abstract F ( R ) Palatini gravity provides a robust framework for constructing viable inflationary potentials. In this study, we examine natural inflation and show that its consistency with observational data can be restored when the model is embedded within F ( R ) Palatini gravity, specifically for F ( R ) = R + αR n with 7/4 ≲ n ≤ 2. For completeness, we also demonstrate that models with n > 2 do not yield comparable improvements, achieving partial agreement with the data only in the limit n → 2.
Fields of Study & Subjects
Cosmology and Gravitation Theories
Black Holes and Theoretical Physics
Noncommutative and Quantum Gravity Theories
Publication details
- Journal / source
- Journal of Cosmology and Astroparticle Physics
- Publisher
- IOP Publishing
- Volume
- 2026
- Issue
- 03
- Pages
- 038–038
- Publication date
- 1 March 2026