15 papers
A new characterization of right keys, and the -symmetric Schur functions at
Luc Lapointe, Luis Pena
The ring of -symmetric functions consists of the formal power series that are symmetric in the variables but carry no symmetry in the first var…
Interpretable Causal Discovery via Causal-Effect Constraints
Cixuan Zhang, Guy Van den Broeck, Benjie Wang
Causal discovery aims to uncover the underlying causal relationships given data generated from a system. The goal, however, is not merely to predict causal edges given data, but al…
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…
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…
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…