2 papers
gr-qc2026
Black hole shadows in nonminimally coupled Weyl connection gravity
Cláudio Gomes, Margarida Lima, Francisco S. N. Lobo +1
We study black hole shadows in nonminimally coupled Weyl connection gravity, a metric-affine extension of general relativity in which spacetime is described by a metric and a Weyl…
gr-qc2026
Dynamics of quadratic f(R) cosmology with a perfect fluid: Jordan and Einstein frames
Artur Alho, Margarida Lima, Filipe C. Mena
We investigate the global dynamics of the field equations of (pure) quadratic theories of gravity which generalise Einstein's theory in spatially flat homogeneous and isotropic cos…