Neutrino Oscillations in Finite Time Path Out-of-Equilibrium Thermal Field Theory

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 mode...

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Veröffentlicht in:Symmetry (Basel) 2023-11, Vol.15 (11), p.1970
Hauptverfasser: Dadić, Ivan, Klabučar, Dubravko
Format: Artikel
Sprache:eng
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Zusammenfassung: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.
ISSN:2073-8994
2073-8994
DOI:10.3390/sym15111970