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 …

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 study a model of inflation in which a scalar field χ is non-minimally coupled to
Starobinsky's R 2 gravity. After transforming it to the Einstein frame, a new scalar field, the …

We present the current accounting of systematic effect uncertainties for the Low Frequency
Instrument (LFI) that are relevant to the 2015 release of the Planck cosmological results …

The stochastic gravitational wave background (SGWB) offers a new opportunity to observe
signals of primordial features from inflationary models. We study their detectability with future …

Cosmological α-attractors stand out as particularly compelling models to describe inflation in
the very early universe, naturally meeting tight observational bounds from cosmic microwave …

The Planck full mission cosmic microwave background (CMB) temperature and E-mode
polarization maps are analysed to obtain constraints on primordial non-Gaussianity (NG) …

Kination denotes an era in the cosmological history corresponding to an equation of state
$\omega=+ 1$ such that the total energy density of the universe redshifts as the sixth inverse …

A bstract If a light axion is present during inflation and becomes part of dark matter
afterwards, its quantum fluctuations contribute to dark matter isocurvature. In this article, we …

Cosmological fluctuations retain a memory of the physics that generated them in their spatial
correlations. The strength of correlations varies smoothly as a function of external …