8 papers
Induced Multi-phase Inflation with Reheating: Leptogenesis and Dark Matter Production in Metric versus Palatini
Nilay Bostan, Rafid H. Dejrah, Anish Ghoshal +1
We study non-minimally coupled scalar-induced multi-phase inflation in metric and Palatini gravity, considering linear, Brans-Dicke-like, and Higgs-like sectors. The scalar spectra…
WISPedia -- the WISPs Encyclopedia
Conrado Albertus, Francesca Chadha-Day, Arturo de Giorgi +8
The Weakly-Interacting Slim Particle encyclopedia (WISPedia) is a comprehensive reference work dedicated to the systematic compilation of theoretical models, Effective Field Theori…
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…
Grand Unification Higgs- Inflation: Complementarity between Proton Decay and CMB Observables
Nilay Bostan, Rafid H. Dejrah, Anish Ghoshal
We propose a predictive Grand Unified Theory (GUT) framework for cosmic inflation in the Palatini formulation of gravity. In this model, a GUT Higgs field…
Natural inflation in Palatini
N. Bostan, R. H. Dejrah, C. Dioguardi +1
In the context of Palatini gravity, models, with X the inflaton kinetic term, are characterized by the appealing property of generating asymptotically flat inflaton potent…
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.…