From the 2 of 8 linked papers with an AI index.
8 papers
Bayesian constraints on quadratic gravity from the ADM mass of white dwarfs
Edson Otoniel, Lucas A. Sousa, Jonathan A. Rebouças +1
We calculate static equilibrium sequences for white dwarfs (WDs) in quadratic symmetric teleparallel gravity, f(Q)=Q+alpha Q^2, and perform a Bayesian comparison between the negati…
White Dwarf Stellar Structure from Effective Polymer Geometry in Loop Quantum Gravity
Edson Otoniel, Jonathan A. Rebouças, M. C. Araújo +1
We construct an effective Tolman Oppenheimer Volkoff system for cold carbon white dwarfs using the areal radius form of a polymer metric sector motivated by loop quantum gravity. T…
Junction Conditions, Radial Stability, Thermodynamics, Optical Geometry and Appearance of Polymer-Quintessence Thin-Shell Wormholes
Jonathan A. Rebouças, Edson Otoniel, M. C. Araújo +2
The authors construct a reflection‑symmetric thin‑shell wormhole from a polymer‑corrected black‑hole metric surrounded by Kiselev‑type quintessence and examine its junction conditi…
Gravitational Lensing in a Kasner Background: Distinguishing Wormholes and Black Holes
Celio R. Muniz, Jonathan A. Rebouças, M. B. Cruz +1
We investigate gravitational lensing by compact objects embedded in anisotropic Bianchi-I cosmologies using directional Jacobi maps within the thin-lens approximation. The formalis…
Thin-shell wormholes in cosmic voids
Jonathan A. Rebouças, Edson Otoniel, Francisco S. N. Lobo
The paper constructs symmetric thin‑shell wormholes by joining two copies of a black‑hole region inside a cosmic void, derives the shell’s stress‑energy via Darmois‑Israel junction…
Thin-Shell Wormholes from Entropy-Induced Black-Hole Geometries
Jonathan A. Rebouças, Edson Otoniel
Modified black-hole entropies can induce effective spacetime geometries and thereby provide a thermodynamic route for investigating thin-shell wormholes. In this work, we construct…