270 citations · 1.3k across the 15 of their papers we have counts for
15 papers
Proca theory of four-dimensional regularized Gauss-Bonnet gravity and black holes with primary hair
Christos Charmousis, Pedro G. S. Fernandes, Mokhtar Hassaine
We introduce a novel, well-defined four-dimensional regularized Gauss-Bonnet theory of gravity by applying a dimensional regularization procedure. The resulting theory is a vector-…
Neutron stars and the cosmological constant problem
Giulia Ventagli, Pedro G. S. Fernandes, Andrea Maselli +2
Phase transitions can play an important role in the cosmological constant problem, allowing the underlying vacuum energy, and therefore the value of the cosmological constant, to c…
Spinning Black Holes with Axion Hair
Clare Burrage, Pedro G. S. Fernandes, Richard Brito +1
In this work we construct and analyse non-perturbative stationary and axially-symmetric black hole solutions in General Relativity coupled to an electromagnetic and an axion field.…
Rotating black holes in semiclassical gravity
Pedro G. S. Fernandes
We present analytic stationary and axially-symmetric black hole solutions to the semiclassical Einstein equations that are sourced by the trace anomaly. We also find that the same…
A new approach and code for spinning black holes in modified gravity
Pedro G. S. Fernandes, David J. Mulryne
We discuss and implement a spectral method approach to computing stationary and axisymmetric black hole solutions and their properties in modified theories of gravity. The resultin…
Exploring the Small Mass Limit of Stationary Black Holes in Theories with Gauss-Bonnet Terms
Pedro G. S. Fernandes, David J. Mulryne, Jorge F. M. Delgado
In this work we examine the small mass limit of black holes, with and without spin, in theories where a scalar field is non-minimally coupled to a Gauss-Bonnet term. First, we prov…
The 4D Einstein-Gauss-Bonnet Theory of Gravity: A Review
Pedro G. S. Fernandes, Pedro Carrilho, Timothy Clifton +1
We review the topic of 4D Einstein-Gauss-Bonnet gravity, which has been the subject of considerable interest over the past two years. Our review begins with a general introduction…
Black Holes in the Scalar-Tensor Formulation of 4D Einstein-Gauss-Bonnet Gravity: Uniqueness of Solutions, and a New Candidate for Dark Matter
Pedro G. S. Fernandes, Pedro Carrilho, Timothy Clifton +1
In this work we study static black holes in the regularized 4D Einstein-Gauss-Bonnet theory of gravity; a shift-symmetric scalar-tensor theory that belongs to the Horndeski class.…
Gravity with a generalized conformal scalar field: Theory and solutions
Pedro G. S. Fernandes
We naturally extend the theory of gravity with a conformally coupled scalar field by only requiring conformal invariance of the scalar field equation of motion and not of the actio…
Observational Constraints on the Regularized 4D Einstein-Gauss-Bonnet Theory of Gravity
Timothy Clifton, Pedro Carrilho, Pedro G. S. Fernandes +1
In this paper we study the observational constraints that can be imposed on the coupling parameter, , of the regularized version of the 4-dimensional Einstein-Gauss-Bonnet…
Derivation of Regularized Field Equations for the Einstein-Gauss-Bonnet Theory in Four Dimensions
Pedro G. S. Fernandes, Pedro Carrilho, Timothy Clifton +1
We propose a regularization procedure for the novel Einstein-Gauss-Bonnet theory of gravity, which produces a set of field equations that can be written in closed form in four dime…
Charged Black Holes in AdS Spaces in Einstein Gauss-Bonnet Gravity
Pedro G. S. Fernandes
Recently a non-trivial 4-dimensional theory of gravity that claims to circumvent Lovelock's theorem and avoid Ostrogradsky instability was formulated in [D. Glavan and C. Lin, Phys…
Einstein-Maxwell-scalar black holes with massive and self-interacting scalar hair
Pedro G. S. Fernandes
Recently, spontaneous scalarization of charged black holes has attracted a great deal of attention and motivated several studies of Einstein-Maxwell-scalar models. These studies ha…
Charged black holes with axionic-type couplings: classes of solutions and dynamical scalarisation
Pedro G. S. Fernandes, Carlos A. R. Herdeiro, Alexandre M. Pombo +2
We consider an augmented Einstein-Maxwell-scalar model including an axionic-type coupling between the scalar and electromagnetic field. We study dyonic black hole solutions in this…
Spontaneous scalarisation of charged black holes: coupling dependence and dynamical features
Pedro G. S. Fernandes, Carlos A. R. Herdeiro, Alexandre M. Pombo +2
Spontaneous scalarisation of electrically charged, asymptotically flat Reissner-Nordström black holes (BHs) has been recently demonstrated to occur in Einstein-Maxwell-Scalar (EMS)…