13 citations · 25 across the 4 of their papers we have counts for
4 papers
Boundary terms in cosmology
Ángel Cuevas, Javier Chagoya, C. Ortiz
In the derivation of the Einstein field equations via Hamilton's principle, the inclusion of a boundary term is essential to render the variational problem well-posed, as it addres…
Shadows of black holes in dynamical Chern-Simons modified gravity
Benito Rodríguez, Javier Chagoya, C. Ortiz
We revisit and extend the study of null geodesics around a slowly rotating black hole in Chern-Simons modified gravity. We employ the Hamilton-Jacobi formalism to derive the equati…
Cosmological fluids in the equivalence between Rastall and Einstein gravity
Javier Chagoya, López-Domínguez, C. Ortiz
Rastall gravity is a modified gravity proposal that incorporates a non-conserved energy momentum tensor (EMT). We study the equivalence between Rastall gravity and general relativi…
Cosmological Boundary Flux Parameter
Rafael Hernández-Jiménez, Claudia Moreno, Mauricio Bellini +1
The {\it{Cosmological Boundary Flux Parameter}} is a novel proposal that attempts to explain the origin of the cosmological parameter purely by geometric nature. Then we implem…