2 papers
astro-ph.GA2026
A differential-geometry approach to black hole characterization of megamaser systems in static spherically symmetric spacetimes
Santiago González-Salud, Rodrigo Bárcena-Ramos, Alfredo Herrera-Aguilar +1
We develop a geometry-first model that maps measured thin-disk water megamaser observables--sky angles, frequency shifts, their secular drifts and the angular redshift rate--to the…
hep-th2024
The propagator field theory revisited: a Lorentz symmetry breaking approach
R. Cartas-Fuentevilla, S. González-Salud, R. Bárcena-Ramos +1
It is well known that the propagator for a massive scalar field is ill-defined in the coordinate space for , in particular it diverges at the light-cone; we show that by us…