A number of challenges to the standard Λ CDM model have been emerging during the past
few years as the accuracy of cosmological observations improves. In this review we discuss …

Since the expansion of the universe was first established by Edwin Hubble and Georges
Lemaître about a century ago, the Hubble constant H_0 H 0 which measures its rate has …

The goal of the Dark Energy Spectroscopic Instrument (DESI) is to determine the nature of
dark energy through the most precise measurement of the expansion history of the universe …

We present cosmological results from the measurement of baryon acoustic oscillations
(BAO) in galaxy, quasar and Lyman-$\alpha $ forest tracers from the first year of …

The recent result of the Dark Energy Spectroscopic Instrument (DESI) in combination with
other cosmological data shows evidence of the evolving dark energy parametrized by the w …

We analyse the clustering of the Sloan Digital Sky Survey IV extended Baryon Oscillation
Spectroscopic Survey Data Release 16 luminous red galaxy sample (DR16 eBOSS LRG) in …

We present angular diameter measurements obtained by measuring the position of baryon
acoustic oscillations (BAO) in an optimized sample of galaxies from the first three years of …

We review recent developments and results in testing general relativity (GR) at cosmological
scales. The subject has witnessed rapid growth during the last two decades with the aim of …

Over recent decades, the role of torsion in gravity has been extensively investigated along
the main direction of bringing gravity closer to its gauge formulation and incorporating spin …

In a six-year program started in 2014 July, the Extended Baryon Oscillation Spectroscopic
Survey (eBOSS) will conduct novel cosmological observations using the BOSS …