3 papers
hep-ph2026
Generalised Casas-Ibarra Parametrisation for Majorana Neutrino Masses
Juan Herrero-GarcÃa, Simone Marciano, Juan Racker +1
We present a simple and broadly applicable extension of the Casas-Ibarra parametrisation that captures the structure of all Majorana neutrino mass models. Building directly on the…
astro-ph.GA2025
Effects of helium sedimentation on late star formation in galaxy clusters
J. Racker, N. Padilla
We discuss how helium sedimentation in galaxy clusters can affect the history of star formation in the central cluster galaxy. As helium sediments, the gas density in the inner reg…
astro-ph.CO2024
Gravitational to Coulomb force ratio and the origin of the Cosmic magnetic field
Nelson D. Padilla, Juan Racker, Ignacio J. Araya +1
The origin of the seeds of galactic magnetic fields is a subject that remains under debate. Here we will explore a simple source based on tiny charge asymmetries in slowly rotating…