Abstract LiteBIRD, the Lite (Light) satellite for the study of B-mode polarization and Inflation
from cosmic background Radiation Detection, is a space mission for primordial cosmology …

The current cosmological model requires new physics beyond the standard model of
elementary particles and fields, such as dark matter and dark energy. Their nature is …

A bstract A new era of exploring the early Universe may have begun with the recent strong
evidence for the stochastic gravitational wave (GW) background from the data reported by …

Could new physics break the mirror symmetry of the Universe? Utilizing recent
measurements of the parity-odd four-point correlation function of BOSS galaxies, we probe …

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 …

We investigate the possibility of measuring the primordial gravitational wave (GW) signal
across 21 decades in frequencies, using the cosmic microwave background (CMB), pulsar …

Observations of the cosmic microwave background (CMB) have cemented the notion that
the large-scale Universe is both statistically homogeneous and isotropic. But is it invariant …

Inspired by the chromo-natural inflation model of Adshead&Wyman, we reshape its scalar
content to relax the tension with current observational bounds. Besides an inflaton, the setup …

This paper explores the physics of second-order gravitational waves (GWs) induced by
scalar-tensor perturbation interactions in the radiation-dominated Universe. We investigate …

A detection of B-mode polarization of the cosmic microwave background (CMB) anisotropies
would confirm the presence of a primordial gravitational wave background (GWB). In the …