58 citations
- University of ConcepciónCL23 papers
- Trinity College DublinIE15 papers
- Institut d'Estudis Espacials de CatalunyaES12 papers
- Institute of Space SciencesES12 papers
- Pontificia Universidad Católica de ValparaísoCL11 papers
- University of WarsawPL11 papers
- Universidad Andrés BelloCL10 papers
- Astronomical ObservatoryRS9 papers
- Institute of AstronomyRU9 papers
- National Central UniversityTW9 papers
- San Sebastián UniversityCL9 papers
- Cardiff UniversityGB8 papers
17 papers · 1 filter
Can wormhole spacetimes in Unimodular Gravity be supported by ordinary matter? A general proof of the exotic matter requirement
Mauricio Cataldo, Norman Cruz, Patricio Salgado
We establish a general no--go theorem demonstrating that all traversable wormhole configurations in Unimodular Gravity necessarily require exotic matter. The proof relies solely on…
Asymptotically AdS black hole with a conformally-coupled scalar field in the first-order formalism of gravity
L. Avilés, C. Corral, F. Izaurieta +2
We present a novel asymptotically anti-de Sitter black hole solution with conformally-coupled scalar fields in the first-order formalism of gravity in four dimensions. To do so, we…
Well-posed non-vacuum solutions in Robinson--Trautman geometry
T. Tahamtan, D. Flores-Alfonso, O. Svitek
We study nonlinear matter models compatible with radiative Robinson--Trautman spacetimes and analyze their stability and well-posedness. The results lead us to formulate a conjectu…
Gravitational Waves from Thurston Geometries
Daniel Flores-Alfonso, Cesar S. Lopez-Monsalvo, Marco Maceda
It has been established that the famous three-dimensional Thurston geometries have four intrinsically Lorentzian analogs. We explore these spacetimes in three-dimensional general r…
Thin shell dynamics in Lovelock gravity
Pablo Guilleminot, Nelson Merino, Rodrigo Olea
We study matching conditions for a spherically symmetric thin shell in Lovelock gravity which can be read off from the variation of the corresponding first-order action. In point o…
Five-dimensional Einstein-Chern-Simons cosmology
Fernando Gómez, Samuel Lepe, Cristian Quinzacara +1
We consider a five-dimensional Einstein-Chern-Simons action which is composed of a gravitational sector and a sector of matter, where the gravitational sector is given by a Chern-S…