We review applications of string theory to cosmology, from primordial times to the present-
day accelerated expansion. Starting with a brief overview of cosmology and string …

Abstract The Laser Interferometer Space Antenna (LISA) has two scientific objectives of
cosmological focus: to probe the expansion rate of the universe, and to understand …

Abstract The Laser Interferometer Space Antenna (LISA) has the potential to reveal wonders
about the fundamental theory of nature at play in the extreme gravity regime, where the …

We provide a review on the state-of-the-art of gravitational waves induced by primordial
fluctuations, so-called induced gravitational waves. We present the intuitive physics behind …

Primordial black holes formed in the early Universe via gravitational collapse of over-dense
regions may contribute a significant amount to the present dark matter relic density. Inflation …

Inflationary models predicting a scale-dependent large amplification of the density
perturbations have recently attracted a lot of attention because the amplified perturbations …

In this Letter, we derive for the first time a characteristic three-peaked GW signal within the
framework of no-scale Supergravity, being the low-energy limit of Superstring theory. We …

We investigate the two-stage inflation regime in the theory of hybrid cosmological α-
attractors. The spectrum of inflationary perturbations is compatible with the latest …

Cosmic inflation provides a window to the highest energy densities accessible in nature, far
beyond those achievable in any realistic terrestrial experiment. Theoretical insights into the …

We identify a characteristic pattern in the scalar-induced stochastic gravitational wave
background from particle production during inflation. If particle production is sufficiently …