184 citations · 1.2k across the 55 of their papers we have counts for
58 papers
Where the Gauss--Bonnet coupling enters the Bondi--Sachs hierarchy
Maickol Muñoz-Palma, Alvaro Restuccia, Francisco Tello-Ortiz
We integrate the Bondi--Sachs hierarchy of scalar--Gauss--Bonnet gravity with an arbitrary coupling function and a radiating massless scalar, and determine the first order i…
On-shell Homogeneous Curvature Modes in Quadratic Cosmology
Francisco Tello-Ortiz, B. Mishra, Y. Gómez-Leyton +1
5We study homogeneous cosmological perturbations in the quadratic model . Linearization of the modified Friedmann equation together with dust…
Black hole and wormhole branches in gravitational decoupling
Francisco Tello-Ortiz, Y. Gomez-Leyton, Vitalii Vertogradov +1
Minimal Geometric Deformation (MGD) applied to a static Schwarzschild black hole seed generates a single decoupler function , obtained by solving the -sector field equatio…
Mass inflation or scalaron rigidity: Cauchy horizons in metric f(R)
Francisco S. N. Lobo, Maickol Muñoz-Palma, Francisco Tello-Ortiz
We develop a double-null framework for Cauchy-horizon dynamics in metric gravity that separates ordinary mass inflation from scalaron cancellation and genuine escape from th…
Area-product universality in multi-horizon black hole entropy
Francisco Tello-Ortiz, Y. Gómez-Leyton, Jean Báez Cuevas +1
Black-hole entropy and multi-horizon area-product relations represent two apparently distinct manifestations of universality, arising respectively from microscopic statistics and c…
Gravitational Wave Standard Sirens as Probes of Lorentz Violation in Bumblebee Gravity
Ayan Banerjee, Bobur Turimov, Francisco Tello-Ortiz +2
Gravitational-wave standard sirens provide a direct measurement of luminosity distance and therefore offer a new way to test gravity over cosmological scales. We use this idea to f…
Horizon-regular cross-focusing and inner-horizon obstructions in spherical f(R) gravity
Maickol Muñoz-Palma, Francisco S. N. Lobo, Jean Báez Cuevas +1
We formulate a horizon-regular double-null criterion for regular inner marginal horizons in spherically symmetric metric gravity. Using normalized outgoing and ingoing radia…
Scalaron-modified null focusing and radial monotonicity in static f(R) gravity
Maickol Muñoz-Palma, Francisco S. N. Lobo, Jean Báez Cuevas +1
We derive an exact radial monotonicity law for static, spherically symmetric spacetimes in metric \(f(R)\) gravity. For \(ds^2=A(r)dt^2-dr^2/B(r)-r^2dΩ^2\), the matter contribution…
Regular black holes with Minkowskian cores: causal structure and observational degeneracy
Francisco Tello-Ortiz, Y. Gómez-Leyton, Alejandro Rueda +2
We construct a new family of asymptotically flat static and rotating regular black holes characterized by a Minkowskian core and a finite two-horizon structure. The solutions are o…
Field Sources for Dark Matter Black Holes
G. Alencar, C. R. Muniz, Francisco Tello-Ortiz
We investigate the field-theoretic realization of regular black holes sourced by dark matter halo profiles within nonlinear electrodynamics (NED) minimally coupled to gravity. Star…
Horizon formation from effective matter profiles in static spacetimes
Pablo León, G. Alencar, Manuel Gonzalez-Espinoza +1
The formation of event horizons is traditionally studied as the endpoint of gravitational collapse, where the matter distribution and the spacetime geometry are evolved simultaneou…
Non-Schwarzschild black holes sourced by scalar-vector fields
Manuel Gonzalez-Espinoza, Y. Gómez-Leyton, Z. Stuchlik +1
In this work, we construct a static and spherically symmetric black hole solution sourced by a nonlinear scalar-vector sector within the framework of the Minimal Geometric Deformat…
Kaniadakis Holographic Dark Energy: UVIR Duality, Horizon Thermodynamics and Cosmological Constraints
Manuel Gonzalez-Espinoza, Samuel Lepe, Joel F. Saavedra +1
We investigate the cosmological and thermodynamic implications of holographic dark energy derived from the Kaniadakis deformation of the Bekenstein--Hawking entropy. In a spatially…
Cosmological implications of Bumblebee theory on an FLRW background
Manuel Gonzalez-Espinoza, Grigorios Panotopoulos, Francisco Tello-Ortiz
We investigate some cosmological implications at background level of the Bumblebee model. The phase-space, the critical points and their stability are analyzed in detail applying w…
First-order phase transitions and cosmic evolution: thermodynamic approach to generalized holographic dark energy
Miguel Cruz, Joaquin Housset, Samuel Lepe +2
Focusing on the description of cosmic evolution at late times, this study examines a generalized holographic dark energy (HDE) framework constructed via a polynomial expansion in t…
Localized five-dimensional rotating brane-world black hole Analytically Connected to an to an AdS boundary
Milko Estrada, Francisco Tello-Ortiz
We provide a method to describe the geometry of an analytic, exponentially localized rotating braneworld black hole, using the Janis Newman algorithm in Hopf coordinates.…
Cosmological FLRW phase transitions under exponential corrected entropy
Rodrigo Rivadeneira-Caro, Joel F. Saavedra, Francisco Tello-Ortiz
This work considers how exponential corrections to the Bekenstein-Hawking entropy formula affect the thermodynamic behavior of the FLRW cosmological model. These corrections drasti…
Quantum Black Holes: Perihelion Advance, Quasi Normal Modes and Classical/ Topological Thermodynamics
Grigoris Panotopoulos, Francisco Tello-Ortiz
We report on some properties of a quantum black hole obtained recently. The correction to the Newtonian gravitational potential is proportional to a coupling , which is the only…
Rotating Einstein-Maxwell-Dilaton Black Hole as a Particle Accelerator
Muhammad Ali Raza, Sehar, M. Azam +2
Similar to particle accelerators, black holes also have the ability to accelerate particles, generating significant amounts of energy through particle collisions. In this study, we…
On static and rotating decoupled black holes without inner horizons
Pablo Leon, B. Mishra, Y. Gomez-Leyton +1
Through gravitational decoupling using the extended minimal geometric deformation, a new family of static and rotating ``hairy'' black holes is provided. The background of these mo…
Some optical properties of rotating wormhole in Bopp-Podolsky electrodynamics
Muhammad Ali Raza, Francisco Tello-Ortiz, M. Zubair +1
In this work, we consider a static wormhole in Bopp-Podolsky electrodynamics and convert it into its rotating counterpart by reducing it into Morris-Thorne form. We further study t…
Tracing cosmic evolution through Weyl-Type f(Q,T) gravity model: theoretical analysis and observational validation
Rahul Bhagat, Francisco Tello-Ortiz, B. Mishra
We investigate the cosmic evolution of the Universe across different cosmological epochs in exponential Weyl-type gravity model. The theoretical analysis involves a detai…
Cosmological FLRW phase transitions and micro-structure under Kaniadakis statistics
Joaquin Housset, Joel F. Saavedra, Francisco Tello-Ortiz
This article is devoted to the study of the thermodynamics phase transitions and critical phenomena of an FLRW cosmological model under the so-called Kaniadakis's statistics. The e…
Thermodynamic aspects of FLRW Universe in Einstein-Gauss-Bonnet domains
Joel F. Saavedra, Francisco Tello-Ortiz
For an FLRW model, thermodynamic phase transitions are investigated in the Einstein-Gauss-Bonnet gravity framework. Using the work density, the equation of state is derived, and th…