Author

F. Tello-Ortiz

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Preprint Oct 2026

Finite-range hair from a nonlocal matter sector: charged Yukawa black holes

{ We construct a new exact charged, static and spherically symmetric black-hole solution of the Einstein--Maxwell equations with an additional anisotropic matter sector, whose metric is the Reissner--Nordstr\"om geometry endowed with a Yukawa-type contribution. The Yukawa term is exponentially screened: it is visible i...

F. Tello-Ortiz, Hishan Farfán-Bachiloglu, Alejandro Rueda et al. · 0 citations

Preprint Sep 2026

On-shell Homogeneous Curvature Modes in Quadratic $F(R,\mathcal G)$ Cosmology

5We study homogeneous cosmological perturbations in the quadratic model $F(R,\mathcal G)=R+\alpha R^2+\beta\mathcal G^2$. Linearization of the modified Friedmann equation together with dust conservation yields a second-order equation for the homogeneous Hubble perturbation, or equivalently a third-order equation for th...

F. Tello-Ortiz, B.Mishra, Y. Gómez-Leyton et al. · 0 citations

Preprint Oct 2026

Where the Gauss--Bonnet coupling enters the Bondi--Sachs hierarchy

We integrate the Bondi--Sachs hierarchy of scalar--Gauss--Bonnet gravity with an arbitrary coupling function $f(\Phi)$ and a radiating massless scalar, and determine the first order in $1/r$ at which the coupling $\lambda$ becomes visible in each field equation. We obtain the asymptotic falloff of the effective Gauss--...

Maickol Muñoz-Palma, '. Restuccia, F. Tello-Ortiz · 0 citations