Stellar structure models in modified theories of gravity: Lessons and challenges

GJ Olmo, D Rubiera-Garcia, A Wojnar - Physics Reports, 2020 - Elsevier
The understanding of stellar structure represents the crossroads of our theories of the
nuclear force and the gravitational interaction under the most extreme conditions observably …

Modified gravity and cosmology

EN Saridakis, R Lazkoz, V Salzano, PV Moniz… - 2021 - Springer
The dawn of the twenty-first century came with very positive prospects for gravity, cosmology,
and astrophysics. Technological progress made it possible for cosmology to enter to its …

Instabilities in metric-affine theories of gravity with higher order curvature terms

JB Jiménez, A Delhom - The European Physical Journal C, 2020 - Springer
We discuss the presence of ghostly instabilities for metric-affine theories constructed with
higher order curvature terms. We mainly focus on theories containing only the Ricci tensor …

Black hole thermodynamics in the presence of nonlinear electromagnetic fields

A Bokulić, I Smolić, T Jurić - Physical Review D, 2021 - APS
As the interaction between the black holes and highly energetic infalling charged matter
receives quantum corrections, the basic laws of black hole mechanics have to be carefully …

[HTML][HTML] Gravity and TT‾ flows in higher dimensions

T Morone, S Negro, R Tateo - Nuclear Physics B, 2024 - Elsevier
We study systems in arbitrary space-time dimensions where matter, deformed by TT‾-like
irrelevant operators, is coupled to gravity in the Palatini formalism. The dynamically …

The role of longitudinal polarizations in Horndeski and macroscopic gravity: introducing gravitational plasmas

F Moretti, F Bombacigno, G Montani - Universe, 2021 - mdpi.com
We discuss some general and relevant features of longitudinal gravitational modes in
Horndeski gravity and their interaction with matter media. Adopting a gauge-invariant …

Parity violating metric-affine gravity theories

D Iosifidis, L Ravera - Classical and Quantum Gravity, 2021 - iopscience.iop.org
We study a metric-affine gravitational theory given by the Einstein–Hilbert (EH) action plus a
parity violating contribution (which we will refer to as the Hojman term, also known as Holst …

Effects of Born–Infeld electrodynamics on black hole shadows

A He, J Tao, P Wang, Y Xue, L Zhang - The European Physical Journal C, 2022 - Springer
In this work, we study the shadow of Born–Infeld (BI) black holes with magnetic monopoles
and Schwarzschild black holes immersed in the BI uniform magnetic field. Illuminated by a …

[HTML][HTML] Radiative corrections in metric-affine bumblebee model

A Delhom, JR Nascimento, GJ Olmo, AY Petrov… - Physics Letters B, 2022 - Elsevier
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 metric in …

Minimal coupling in presence of non-metricity and torsion

A Delhom - The European Physical Journal C, 2020 - Springer
We deal with the question of what it means to define a minimal coupling prescription in
presence of torsion and/or non-metricity, carefully explaining while the naive substitution ∂ …