Particle physics today faces the challenge of explaining the mystery of dark matter, the origin
of matter over anti-matter in the Universe, the origin of the neutrino masses, the apparent …

In the late 1970s, the axion was proposed as a solution to the strong CP problem, ie, the
puzzle why the strong interactions conserve parity P and the product CP of charge …

Measurements of the Hubble constant and, more generally, measurements of the expansion
rate and distances over the interval 0< z< 1 appear to be inconsistent with the predictions of …

The cosmological principle (CP)—the notion that the Universe is spatially isotropic and
homogeneous on large scales—underlies a century of progress in cosmology. It is …

String theory suggests the simultaneous presence of many ultralight axions, possibly
populating each decade of mass down to the Hubble scale 10-33 eV. Conversely the …

Abstract Euclid is a European Space Agency medium-class mission selected for launch in
2020 within the cosmic vision 2015–2025 program. The main goal of Euclid is to understand …

We report measurements of Ω M, Ω Λ, and w from 11 supernovae (SNe) at z= 0.36–0.86 with
high-quality light curves measured using WFPC2 on the Hubble Space Telescope (HST) …

Most embeddings of the Standard Model into a more unified theory, in particular those
based on supergravity or superstrings, predict the existence of a hidden sector of particles …

Using the low limit of cosmic ages from globular cluster and the white dwarfs: t0> 12Gyr,
together with recent new high redshift supernova observations from the HST/GOODS …

Abstract Euclid is a European Space Agency medium-class mission selected for launch in
2019 within the Cosmic Vision 2015–2025 program. The main goal of Euclid is to …