The simplest ΛCDM model provides a good fit to a large span of cosmological data but
harbors large areas of phenomenology and ignorance. With the improvement of the number …

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 …

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 …

Multimessenger gravitational-wave (GW) astronomy has commenced with the detection of
the binary neutron star merger GW170817 and its associated electromagnetic counterparts …

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 …

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 …

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 …

Testing modified gravity at cosmological distances with LISA standard sirens - IOPscience Skip
to content IOP Science home Accessibility Help Search all IOPscience content Search Article …

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 …

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 …