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9 papers · 2 filters
Nonlinear -models in the Eddington-inspired Born-Infeld Gravity
J. R. Nascimento, Gonzalo J. Olmo, P. J. Porfírio +2
In this paper we consider two different nonlinear -models minimally coupled to Eddington-inspired Born-Infeld gravity. We show that the resultant geometries represent minimal mo…
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…
A Non-Local Action for Electrodynamics: Duality Symmetry and the Aharonov-Bohm Effect, Revisited
Joan Bernabeu, Jose Navarro-Salas
A non-local action functional for electrodynamics depending on the electric and magnetic fields, instead of potentials, has been proposed in the literature. In this work we elabora…
Effective interactions in Ricci-Based Gravity models below the non-metricity scale
Adria Delhom, Victor Miralles, Ana Peñuelas
We show how minimally-coupled matter fields of arbitrary spin, when coupled to Ricci-Based Gravity theories, develop non-trivial effective interactions that can be treated perturba…
New scalar compact objects in Ricci-based gravity theories
Victor I. Afonso, Gonzalo J. Olmo, Emanuele Orazi +1
Taking advantage of a previously developed method, which allows to map solutions of General Relativity into a broad family of theories of gravity based on the Ricci tensor (Ricci-b…
Translational anomaly of chiral fermions in two dimensions
Pau Beltrán-Palau, Jose Navarro-Salas, Silvia Pla
It is well known that a quantized two-dimensional Weyl fermion coupled to gravity spoils general covariance and breaks the covariant conservation of the energy-momentum tensor. In…