Speaker
Mr
Mustapha LAMAAOUNE
(Mohamed V university)
Description
In this paper, we investigate an inflation scenario and dark energy in a scaled gravity, R + βR where β is a dimensionless gravity parameter, with a kinetic term. To reduce the associated moduli space, we implement such a parameter in a specific scalar potential given by V (ϕ) = M4(1 − (ϕ μ)β). By computing the relevant cosmological observables including the spectral index ns and the tensor-to-scalar ratio r via the slow-roll analysis, we provide certain inflationary constraints on β from the Planck observational and the recent released BICEP/Keck data. By means of a possible Higgs-inflaton coupling, we discuss dark energy in the proposed scaled gravity within such an inflation model.
Primary author
Mr
Mustapha LAMAAOUNE
(Mohamed V university)
