Starobinsky inflation is an attractive, fundamental model to explain the Planck measurements, and its higher-order extension may allow us to probe quantum gravity effects. We show that future CMB data combined with the 21cm intensity map from SKA will meaningfully probe such an extended Starobinsky model. A combined analysis will provide a precise measurement and intriguing insight into inflationary dynamics, even accounting for correlations with astrophysical parameters.
Cited by 1
Do et al., Stability investigations of isotropic and anisotropic exponential inflation in the Starobinsky–Bel–Robinson gravity
Int. J. Mod. Phys. D 32, 2350087 (2023) [Crossref]