Abstract The standard Λ Cold Dark Matter (ΛCDM) cosmological model provides a good
description of a wide range of astrophysical and cosmological data. However, there are a …

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 …

We present results from an analysis of all data taken by the BICEP2, Keck Array, and
BICEP3 CMB polarization experiments up to and including the 2018 observing season. We …

The observed pattern of linear polarization of the cosmic microwave background photons is
a sensitive probe of physics violating parity symmetry under inversion of spatial coordinates …

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 …

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 …

A tantalizing hint of isotropic cosmic birefringence has been found in the EB cross-power
spectrum of the cosmic microwave background (CMB) polarization data with a statistical …

Motivated by the discrepancy between Bayesian and frequentist upper limits on the tensor-to-
scalar ratio parameter r found by the SPIDER collaboration, we investigate whether a similar …

The frequentist method of profile likelihoods has recently received renewed attention in the
field of cosmology. This is because the results of inferences based on the latter may differ …

Recently, the cross-correlation between E-and B-mode polarization of the cosmic microwave
background, which is well explained by cosmic birefringence with rotation angle β≈ 0.3 …