G. Barenboim

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...