3 citations · 3 across the 5 of their papers we have counts for
5 papers
Energy-independent neutrino dephasing from an ultralight axion-like background
B. A. Couto e Silva, B. L. Sánchez-Vega
We study neutrino oscillations in an ultralight axion-like particle (ALP) dark-matter background using a bottom-up derivative interaction for active neutrinos. For couplings diagon…
Photon Propagation through Axion Clouds around Magnetized Compact Objects: Time Delays and Polarimetric Signatures
M. M. Chaichian, B. A. Couto e Silva, B. L. Sánchez-Vega
Temporal offsets between Gamma-Ray Bursts (GRBs) and high-energy neutrinos probe propagation effects in extreme astrophysical environments. We investigate whether such offsets can…
Mixed Freeze-In and Freeze-Out Histories and Dark-Sector Decays in a Two-Scalar Model
J. P. Carvalho-Corrêa, B. A. Couto e Silva, B. L. Sánchez-Vega
We present a systematic non-equilibrium analysis of a renormalisable Higgs-portal dark sector with a complex scalar and a real scalar , including conversi…
Neutrino Theory in the Precision Era
Asmaa Abada, Gabriela Barenboim, Toni Bertólez-Martínez +76
This document summarises discussions on future directions in theoretical neutrino physics, which are the outcome of a neutrino theory workshop held at CERN in February 2025. The st…
Spin-1/2 "bosons'' with mass dimension 3/2 and fermions with mass dimension 1 cannot represent physical particle states
A. R. Aguirre, M. M. Chaichian, B. A. Couto e Silva +1
We delve into the first principles of quantum field theory to prove that the so-called spin-1/2 ''bosons'' and the fermions with mass dimension 1, including ELKO, cannot represent…