3 papers
gr-qc2026
Static Black Holes and Iyer-Wald Entropy in Gravity
I. Díaz-Saldaña, J. López-Domínguez, Wilfredo Yupanqui +2
We investigate static, spherically symmetric black hole solutions in a class of higher-curvature gravitational theories described by a Lagrangian that depends on the Ricci and Kret…
gr-qc2024
Observational constraints on entropic cosmology
Javier Chagoya, I. Díaz-Saldaña, Mario H. Amante +2
In this work, we derive a generalized modified Friedmann equation based on an entropy-area relation that incorporates established modifications, such as volumetric, linear, and log…
gr-qc2023
On the entropy of a stealth vector-tensor black hole
Javier Chagoya, I. Díaz-Saldaña, J. C. López-Domínguez +1
We apply Wald's formalism to a Lagrangian within generalised Proca gravity that admits a Schwarzschild black hole with a non-trivial vector field. The resulting entropy differs fro…