We review conceptual aspects of inflationary scenarios able to produce primordial black
holes by amplifying the size of curvature fluctuations to the level required to trigger black …

The microscopic quantum nature of elementary particles, chirality, leads to macroscopic
phenomena like the chiral anomaly, chiral magnetic effect, and chiral plasma instability. We …

We discuss the interpretation of the detected signal by pulsar timing array (PTA)
observations as a gravitational wave background of cosmological origin. We combine …

Several pulsar timing arrays including NANOGrav, EPTA, PPTA, and CPTA have recently
reported the observation of a stochastic background of gravitational wave spectrum in the …

Cosmic string networks offer one of the best prospects for detection of cosmological
gravitational waves (GWs). The combined incoherent GW emission of a large number of …

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

We present a set of tools to assess the capabilities of LISA to detect and reconstruct the
spectral shape and amplitude of a stochastic gravitational wave background (SGWB). We …

We study the nonlinear dynamics of axion inflation, capturing for the first time the
inhomogeneity and full dynamical range during strong backreaction, till the end of inflation …

The production of a stochastic background of gravitational waves is a fundamental
prediction of any cosmological inflationary model. The features of such a signal encode …

This book lays out the scientific goals to be addressed by the next-generation ground-based
cosmic microwave background experiment, CMB-S4, envisioned to consist of dedicated …