From the 1 of 4 linked papers with an AI index.
4 papers
Light propagation and intensity transport in metric-affine geometry
Antonio De Felice, Lavinia Heisenberg, Gonzalo J. Olmo +1
The paper investigates how electromagnetic waves travel in spacetimes with torsion and non‑metricity, constructing gauge‑invariant models that can alter light cones, cause birefrin…
Dynamical dark energy in the Bianchi Type-V Universe with DESI DR2 BAO, SNIa compilation and RSD measurements
Shambel Sahlu, Ãlvaro de la Cruz-Dombriz, A. H. A. Alfedeel +2
We investigate the cosmological implications of dynamical dark energy (DDE) models within an anisotropic, spatially homogeneous Bianchi Type-V spacetime framework using a cov…
Metric-affine bumblebee gravity: classical aspects
Adria Delhom, J. R. Nascimento, Gonzalo J. Olmo +2
We consider the metric-affine formulation of bumblebee gravity, derive the field equations, and show that the connection can be written as Levi-Civita of a disformally related metr…
Boundary terms and on-shell action in Ricci-based gravity theories: the Hamiltonian formulation
Gerardo Mora-Pérez, Gonzalo J. Olmo, Diego Rubiera-Garcia +1
Considering the so-called Ricci-based gravity theories, a family of extensions of General Relativity whose action is given by a non-linear function of contractions and products of…