299 citations · 725 across the 23 of their papers we have counts for
7 papers · 1 filter
Quasi-pole inflation in metric-affine gravity
Antonio Racioppi
We propose a new mechanism for inflationary model building in the framework of metric-affine gravity. Such a mechanism involves an inflaton non-minimally coupled with the Holst inv…
Natural inflation in Palatini
N. Bostan, R. H. Dejrah, C. Dioguardi +1
Palatini gravity provides a robust framework for constructing viable inflationary potentials. In this study, we examine natural inflation and show that its consistency with…
Has ACT measured radiative corrections to the tree-level Higgs-like inflation?
Ioannis D. Gialamas, Alexandros Karam, Antonio Racioppi +1
Starobinsky inflation and nonminimally coupled (NMC) Higgs inflation have been among the most favored models of the early Universe, as their predictions for the scalar spectral ind…
Fractional attractors in light of the latest ACT observations
Christian Dioguardi, Antonio J. Iovino, Antonio Racioppi
In light of the latest results from ACT observations we review a class of potentials labeled as fractional attractors, that can originate from Palatini gravity. We show that, for c…
The CosmoVerse White Paper: Addressing observational tensions in cosmology with systematics and fundamental physics
Eleonora Di Valentino, Jackson Levi Said, Adam Riess +533
The standard model of cosmology has provided a good phenomenological description of a wide range of observations both at astrophysical and cosmological scales for several decades.…
Quintessential Inflation in Palatini gravity
Konstantinos Dimopoulos, Christian Dioguardi, Gert Hütsi +1
Palatini gravity, with the inflaton kinetic term, proved to be a powerful framework for generating asymptotically flat inflaton potentials. Here we show that a quadrat…