Neutrino Oscillations in Finite Time Path Out-of-Equilibrium Thermal Field Theory
arXiv:2311.11875 · doi:10.3390/sym15111970
Abstract
We demonstrate that the Finite-Time-Path Field Theory is an adequate tool for calculating neutrino oscillations. We apply this theory using a mass-mixing Lagrangian which involves the correct Dirac spin and chirality structure and a Pontecorvo-Maki-Nakagawa-Sakata (PMNS)-like mixing matrix. The model is exactly solvable. The Dyson-Schwinger equations transform propagators of the input free (massless) flavor neutrinos into a linear combination of oscillating (massive) neutrinos. The results are consistent with the predictions of the PMNS matrix while allowing for extrapolation to early times.
arXiv comment19 pages, published in the Special Issue "Selected Papers from ACHT 2021: Perspectives in Particle, Cosmo- and Astroparticle Theory", https://www.mdpi.com/journal/symmetry/special_issues/ACHT_2021
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