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 …

Extended Theories of Gravity can be considered as a new paradigm to cure shortcomings of
General Relativity at infrared and ultraviolet scales. They are an approach that, by …

A generalization of Einstein's gravitational theory is discussed in which the spin of matter as
well as its mass plays a dynamical role. The spin of matter couples to a non-Riemannian …

Page 1 INTRODUCTION TO GRAVITATION AL Venzo de Sabbata Maurizio Gasperini t
World Scientific Page 2 INTRODUCTION TO GRAVITATION Page 3 This page is …

We propose a simple scenario which explains why our Universe appears spatially flat,
homogeneous and isotropic. We use the Einstein–Cartan–Kibble–Sciama (ECKS) theory of …

Cosmic strings, as topological spacetime defects, show striking resemblance to defects in
solid continua: distortions, which can be classified into disclinations and dislocations, are …

Relaxing the Riemannian condition to incorporate geometric quantities such as torsion and
non-metricity may allow to explore new physics associated with defects in a hypothetical …

The Einstein-Cartan-Sciama-Kibble theory of gravity removes the constraint of general
relativity that the affine connection be symmetric by regarding its antisymmetric part, the …

In this paper, we investigate the gravitational-wave generation problem at the first post-
Newtonian order in the context of Einstein-Cartan theory by exploiting the Blanchet-Damour …