2 papers
gr-qc2026
Non-Stationary Wormholes and Matter Source Reconstruction in General Relativity
Geová Alencar, Tiago Crispim, Roberta Dárlla +1
We investigate non-stationary wormhole geometries in General Relativity embedded in evolving cosmological backgrounds. We employ a Simpson-Visser-like regularization of the tempora…
gr-qc2025
Non-stationary wormholes with the presence of scalar fields and modified gravity
G. Alencar, R. Dárlla, Shin'ichi Nojiri +2
Some novel regular spacetimes are considered that show a non-stationary wormhole structure. A Simpson-Visser-like procedure is applied to reconstruct these regular spacetimes, free…