From fundamental physics to tests with compact objects in metric-affine theories of gravity

Abstract

This work provides a short but comprehensible overview of some relevant aspects of metric-affine theories of gravity in relation to the physics and astrophysics of compact objects. We shall highlight the pertinence of this approach to supersede General Relativity on its strong-field regime, as well as its advantages and some of its difficulties. Moreover, we shall reflect on the present and future opportunities to testing its predictions with relativistic and non-relativistic stars, black holes, and other exotic horizonless compact objects.

12 double column pages, 2 figures, Contribution to Selected Papers of the Fifth Amazonian Symposium on Physics, accepted in IJMPD

References in corpus (20)

• GW170817: Observation of Gravitational Waves from a Binary Neutron Star Inspiral
• First M87 Event Horizon Telescope Results. I. The Shadow of the Supermassive Black Hole
• The Confrontation between General Relativity and Experiment
• A Massive Pulsar in a Compact Relativistic Binary
• Dark Energy after GW170817: dead ends and the road ahead
• Palatini Approach to Modified Gravity: f(R) Theories and Beyond
• The trouble with $H_0$
• The teleparallel equivalent of general relativity
• Echoes of ECOs: gravitational-wave signatures of exotic compact objects and of quantum corrections at the horizon scale
• The type Ia supernova SNLS-03D3bb from a super-Chandrasekhar-mass white dwarf star
• Metric-affine f(R) theories of gravity
• Singularity Theorems and Their Consequences
• The 1965 Penrose singularity theorem
• A recipe for echoes from exotic compact objects
• Surface singularities in Eddington-inspired Born-Infeld gravity
• Nonsingular black holes, wormholes, and de Sitter cores from anisotropic fluids
• Crystal clear lessons on the microstructure of space-time and modified gravity
• Comment on "Generic rotating regular black holes in general relativity coupled to non-linear electrodynamics"
• Structure of Compact Stars in R-squared Palatini Gravity
• Nonsingular black holes in Palatini extensions of General Relativity

Cited by in corpus (7)

• New models and Big Bang Nucleosynthesis constraints in $f(Q)$ gravity
• Late-time cosmology with phantom dark-energy in $f(Q)$ gravity
• New models with independent dynamical torsion and nonmetricity fields
• Cooling process of brown dwarfs in Palatini f(R) gravity
• Boson stars in Palatini $f(\mathcal{R})$ gravity
• Parameterized non-relativistic limit of stellar structure equations in Ricci-based gravity theories
• Constraints on metric-affine gravity black holes from the stellar motion at the Galactic Center