A century ago, Einstein formulated his elegant and elaborate theory of General Relativity,
which has so far withstood a multitude of empirical tests with remarkable success …

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 …

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 review recent progress in the construction of modified gravity models as alternatives to
dark energy as well as the development of cosmological tests of gravity. Einstein's theory of …

The gravitational wave (GW) event GW170817 from a binary neutron star merger together
with the electromagnetic counterpart showed that the speed of GWs ct is very close to that of …

We consider the production of secondary gravity waves in Galileon inflation with an ultra-
slow roll (USR) phase and show that the spectrum of scalar-induced gravitational waves …

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 …

We measure the redshift-space correlation function from a spectroscopic sample of 2783
emission line galaxies from the FastSound survey. The survey, which uses the Subaru …

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 …

The isotropy and homogeneity of the cosmic microwave background (CMB) favors “scalar
driven” early Universe inflationary models. However, gauge fields and other non-scalar …