3 papers
gr-qc2026
The imitation game (r)evolutions: -star effective shadow from GRMHD analysis
VÃctor Jaramillo, Laura Meneses, Héctor R. Olivares Sánchez +3
-stars are a class of boson stars arising in scalar-field theories with interacting potentials, minimally coupled to gravity. We show that, in certain regions of parameter space…
gr-qc2026
Gravitational confinement of ghost scalar fields in neutron stars
Argelia Bernal, VÃctor Jaramillo, Néstor A. Montiel-Hernández +2
We investigate the effects, stability, and nonlinear dynamics of ghost scalar matter modeled as a field with a negative kinetic term confined within the cores of neutron stars. To…
hep-ph2026
Probing a minimal dark gauge sector via microlensing of compact dark objects
Juan Barranco, Argelia Bernal, VÃctor Jaramillo +2
We introduce a minimal Dark Standard Model (DSM) consisting of a single spin-0 particle with dark gauge symmetry, and completely decoupled from the visible sector. Character…