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Author

A. Gago

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Preprint Oct 2026

Combining Pumping and Absorption Effects in Neutrino Oscillation Probabilities: A Non-Hermitian Framework

We study two-flavour neutrino oscillations in which a coherent off-diagonal interaction from a complex background field coexists with an absorptive channel acting on a single mass eigenstate. Since the two do not commute, the effective Hamiltonian is non-normal and oscillations and damping no longer factorise. We formu...

G. Barenboim, A. Gago, E. Massoni · 0 citations
Open access May 2026

Exploring neutrino loss with difusse astrophysical neutrino fluxes

We study the sensitivity of the difusse high-energy neutrino flux observed in IceCube to new-physics effects resulting in an exponential flux attenuation along the trajectory, such as invisible neutrino decay or new interactions with the background encountered during propagation. We argue that, even though the sources...

Ivan Esteban, A. Gago, M. González García et al. · 1 citation

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