248 citations · 1.6k across the 41 of their papers we have counts for
5 papers · 1 filter
Can the dark matter halo be a collisionless ensemble of axion stars?
J. Barranco, A. Carrillo Monteverde, D. Delepine
If dark matter is mainly composed of axions, the density distribution can be nonuniformly distributed, being clumpy instead. By solving the Einstein-Klein-Gordon system of a scalar…
Schwarzschild black holes can wear scalar wigs
Juan Barranco, Argelia Bernal, Juan Carlos Degollado +5
We study the evolution of a massive scalar field surrounding a Schwarzschild black hole and find configurations that can survive for arbitrarily long times, provided the black hole…
Neutrino Spin Flavor Precession and Leptogenesis
Juan Barranco, Roberto Cota, David Delepine +1
We argue that ΔL=2 neutrino spin flavor precession, induced by the primordial magnetic fields, could have a significant impact on the leptogenesis process that accounts for the bar…
A reduction in the UHE neutrino flux due to neutrino spin precession
J. Barranco, O. G. Miranda, C. A. Moura +1
Motivated by the stringent flux limits for UHE neutrinos coming from gamma ray burst or active galactic nuclei, we explore the possibility that the active neutrinos generated in su…
Neutrino mass determination from a four-zero texture mass matrix
J. Barranco, D. Delepine, L. Lopez-Lozano
We analyze the different parametrizations of a general four-zero texture mass matrices for quarks and leptons, that are able to reproduce the CKM and PMNS mixing matrices. This stu…