7 papers
(Super-)renormalizable hairy meronic black holes
Luis Avilés, Borja Diez
We construct an analytical black hole solution in the Einstein-Maxwell-Yang-Mills theory with a conformally coupled scalar field in four dimensions, which generalizes the charged M…
Hadronic lensing
Fabrizio Canfora, Cristóbal Corral, Cristóbal Corral +1
We introduce an analytic approach to study gravitational lensing in the presence of a distribution of hadrons. The situation is analogous to the propagation of photons in a medium…
Universality of merons in non-Abelian gauge theories
Borja Diez, Luis Guajardo
Within the wide variety of topological solitons supported by Yang--Mills theory, merons occupy a particularly distinguished role. Despite their simplicity, they represent genuinely…
Nonconformally Ricci-flat instantons in Conformal Gravity with and without nonlinear matter fields
Cristóbal Corral, Borja Diez, Eleftherios Papantonopoulos
In this work, we study nonconformally Ricci-flat gravitational instantons in four-dimensional Conformal Gravity, both in vacuum and in the presence of nonlinear conformal matter. F…
Self-dual instantons and gravitating dyons in non-Abelian ModMax theory
Fabrizio Canfora, Cristóbal Corral, Borja Diez +2
Motivated by the recent interest in conformal and duality invariant nonlinear electrodynamics, we study the non-Abelian extension of ModMax electrodynamics. The theory is parameter…
Inhomogeneous metrics on complex bundles in Lovelock gravity
Cristóbal Corral, Borja Diez, Daniel Flores-Alfonso +2
We consider Lovelock gravity in arbitrary, even dimensions. We find a large class of new gravitational instantons by considering extended nontrivial circle bundles over Kähler man…