In this paper, we present an introduction to cosmic inflation in the framework of Palatini
gravity, which provides an intriguing alternative to the conventional metric formulation of …

In this paper, we review the so-called Myrzakulov Gravity models (MG-N, with N= I, II,…, VIII)
and derive their respective metric-affine generalizations (MAMG-N), discussing also their …

In the general framework of Metric-Affine theories of gravity, where the metric and the
connection are independent variables, we consider actions quadratic in the Ricci scalar …

We discuss how tensor polarizations of gravitational waves can suffer Landau damping in
the presence of velocity birefringence, when parity symmetry is explicitly broken. In …

In the context of the metric-affine Chern-Simons gravity endowed with projective invariance,
we derive analytical solutions for torsion and nonmetricity in the homogeneous and isotropic …

Gravitational waves (GWs) are useful to test gravitational theories and to probe the physics
in the early universe. In this paper, we investigate the scalar induced gravitational waves …

We investigate the scalar induced gravitational waves (SIGWs) in the Chern-Simons (CS)
gravity with a dynamical scalar field during slow roll inflation. Due to the parity violation in …

We extend the notion of the Nieh-Yan invariant to generic metric-affine geometries, where
both torsion and nonmetricity are taken into account. Notably, we show that the properties of …

Gravitational wave physics can probe theories that extend beyond general relativity.
Motivated by recent attention on the Kalb-Ramond field as a dark matter candidate, in this …

We investigate the scalar induced gravitational waves (SIGWs) in the Chern-Simons (CS)
modified gravity during the radiation dominated era. The SIGWs are circularly polarized …