Cosmological gravitational particle production (CGPP) is the creation of particles in an
expanding universe due solely to their gravitational interaction. These particles can play an …

Gravitational waves (GWs) have a great potential to probe cosmology. We review early
universe sources that can lead to cosmological backgrounds of GWs. We begin by …

We provide an overview of the string landscape and the Swampland program. Our review of
the string landscape covers the worldsheet and spacetime perspectives, including vacua …

A bstract Motivated by principles from the Swampland program, which characterize
requirements for a consistent UV completion of quantum gravity, combined with …

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 developments and results in testing general relativity (GR) at cosmological
scales. The subject has witnessed rapid growth during the last two decades with the aim of …

We study aspects of anti-de Sitter space in the context of the Swampland. In particular, we
conjecture that the near-flat limit of pure AdS belongs to the Swampland, as it is necessarily …

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 investigate the potential for the LISA space-based interferometer to detect the stochastic
gravitational wave background produced from different mechanisms during inflation …

We review recent progress in massive gravity. We start by showing how different theories of
massive gravity emerge from a higher-dimensional theory of general relativity, leading to the …