2 papers
astro-ph.CO2026
Spin-1 Ultralight Dark Matter under Cosmological Scrutiny: Mass Constraints from CMB and Distance Probes
Guadalupe Ahumada Acuña, Tomas Ferreira Chase, Diana López Nacir +1
We present cosmological constraints on spin-1 ultralight dark matter, described by a vector field (VFDM) with mass , using Planck CMB data and geometrical probes from BA…
gr-qc2025
Born-Infeld Electrogravity and Dyonic Black Holes
Guadalupe Ahumada Acuña, Cecilia Bejarano, Rafael Ferraro
Born-Infeld electrogravity is defined through a Lagrangian that couples gravity and electromagnetism within a single determinantal structure. The field equations are derived in Pal…