Horizon-scale images of black holes (BHs) and their shadows have opened an
unprecedented window onto tests of gravity and fundamental physics in the strong-field …

In this contribution, we discuss the asymptotic safety scenario for quantum gravity with a
functional renormalization group approach that disentangles dynamical metric fluctuations …

Quintessential inflation provides a unified description of inflation and dark energy in terms of
a single scalar degree of freedom, the cosmon. We present here a comprehensive overview …

We investigate the production process of induced gravity waves due to large scalar
fluctuations in the paradigm of quintessential inflation. We numerically solve the Mukhanov …

A Hubble-induced phase transition is a natural spontaneous symmetry breaking mechanism
allowing for explosive particle production in non-oscillatory models of inflation involving non …

We construct a model of quintessential inflation in Palatini R 2 gravity employing a scalar
field with a simple exponential potential and coupled to gravity with a running non-minimal …

The recent results on the baryon acoustic oscillations measurements from the DESI
collaboration have shown tantalizing hints for a time-evolving dark energy equation of state …

We consider cosmology with an inflaton scalar field with an additional quartic kinetic term.
Such a theory can be motivated by Palatini R+ R 2 modified gravity. Assuming a runaway …

In this article we calculate the reheating temperature in the cosmological scenarios where
heavy scalar particles are gravitationally produced, due to a conformally coupled interaction …

Due to universality and attractor properties, α-attractor quintessential inflation establishes
direct relations between inflationary observables such as the scalar tilt ns and the tensor-to …