3 papers
gr-qc2025
On non-equatorial embeddings into of spherically symmetric wormholes with topological defects
Mauricio Cataldo, Daniel Cuevas
Traditionally, the embedding procedure for spherically symmetric spacetimes has been restricted to the equatorial plane . This conventional approach, however, encounters a…
gr-qc2025
Could a thin-shell configuration lie hidden within the Universe?
Mauricio Cataldo, Antonella Cid, Pedro Labraña
This article explores the cosmological scenario in which our Universe contains a hidden thin-shell configuration. We investigate a degenerate modification of the Friedmann-Robertso…
gr-qc2025
Revisiting Wormhole Solutions in Unimodular Gravity: Energy Conditions and Exotic Matter Requirements
Mauricio Cataldo, Norman Cruz
The paper entitled Unimodular Gravity Traversable Wormholes by Agrawal et al. examined the properties of barotropic wormholes without tidal forces within the framework of Unimodula…