After a decade and a half of research motivated by the accelerating universe, theory and
experiment have reached a certain level of maturity. The development of theoretical models …

In this paper, we review in detail different mechanisms of generation of large primordial
fluctuations and their implications for the production of primordial black holes (PBHs) and …

The dawn of the twenty-first century came with very positive prospects for gravity, cosmology,
and astrophysics. Technological progress made it possible for cosmology to enter to its …

The LIGO and VIRGO Collaborations have recently announced the detection of gravitational
waves from a neutron star–neutron star merger (GW170817) and the simultaneous …

We consider Galileon inflation in the Effective Field Theory (EFT) framework and examine
the possibility for PBH formation during slow roll (SR) to ultra slow roll (USR) transitions. We …

We demonstrate the explicit realisation of the ultra-slow roll phase in the framework of the
effective field theory of single-field Galileon inflation. The pulsar timing array (PTA) …

We present a detailed study of the generation of large primordial non-Gaussianities during
the slow-roll (SR) to ultra-slow roll (USR) transitions in the framework of Galileon inflation …

Cosmological models with Galileon gravity are an alternative to the standard ΛCDM
paradigm with testable predictions at the level of its self-accelerating solutions for the …

Explaining the origin of the acceleration of the expansion of the Universe remains as
challenging as ever. In this review, we present different approaches from dark energy to …

Discrepant measurements of the Universe's expansion rate (H 0) may signal physics beyond
the standard cosmological model. Here I describe two early modified gravity mechanisms …