Chiral oscillations in quantum field theory
Massive fermions produced with definite chirality undergo chiral oscillations. So far, this phenomenon has been mainly described in the framework of single particle relativistic quantum mechanics. In this paper, we present a quantum field theory approach to chiral oscillations in analogy with the on...
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| Format: | Article |
| Language: | English |
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Elsevier
2025-05-01
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| Series: | Physics Letters B |
| Online Access: | http://www.sciencedirect.com/science/article/pii/S0370269325001595 |
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| author | Victor A.S.V. Bittencourt Massimo Blasone Gennaro Zanfardino |
| author_facet | Victor A.S.V. Bittencourt Massimo Blasone Gennaro Zanfardino |
| author_sort | Victor A.S.V. Bittencourt |
| collection | DOAJ |
| description | Massive fermions produced with definite chirality undergo chiral oscillations. So far, this phenomenon has been mainly described in the framework of single particle relativistic quantum mechanics. In this paper, we present a quantum field theory approach to chiral oscillations in analogy with the one used to describe flavor mixing and oscillations. By taking the expectation value of chiral charges, we obtain the same chiral oscillation formula derived via standard relativistic quantum mechanics. We find that chiral charges are diagonalized by a Bogoliubov transformation: this implies that the vacuum for particles with definite chirality is orthogonal to the one for those with definite energy. In the case of neutrinos, our results can be further extended to include also flavor oscillations. |
| format | Article |
| id | doaj-art-afbc23650f3c40e3b1f928562f14846a |
| institution | OA Journals |
| issn | 0370-2693 |
| language | English |
| publishDate | 2025-05-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Physics Letters B |
| spelling | doaj-art-afbc23650f3c40e3b1f928562f14846a2025-08-20T02:17:26ZengElsevierPhysics Letters B0370-26932025-05-0186413939910.1016/j.physletb.2025.139399Chiral oscillations in quantum field theoryVictor A.S.V. Bittencourt0Massimo Blasone1Gennaro Zanfardino2ISIS (UMR 7006), Université de Strasbourg, 67000 Strasbourg, FranceDipartimento di Fisica, Università degli Studi di Salerno, Via Giovanni Paolo II, 132 84084 Fisciano, Italy; INFN, Sezione di Napoli, Gruppo Collegato di Salerno, Italy; Corresponding author.Dipartimento di Ingegneria Industriale, Università di Salerno, Via Giovanni Paolo II, 132 I-84084 Fisciano (SA), Italy; INFN, Sezione di Napoli, Gruppo Collegato di Salerno, ItalyMassive fermions produced with definite chirality undergo chiral oscillations. So far, this phenomenon has been mainly described in the framework of single particle relativistic quantum mechanics. In this paper, we present a quantum field theory approach to chiral oscillations in analogy with the one used to describe flavor mixing and oscillations. By taking the expectation value of chiral charges, we obtain the same chiral oscillation formula derived via standard relativistic quantum mechanics. We find that chiral charges are diagonalized by a Bogoliubov transformation: this implies that the vacuum for particles with definite chirality is orthogonal to the one for those with definite energy. In the case of neutrinos, our results can be further extended to include also flavor oscillations.http://www.sciencedirect.com/science/article/pii/S0370269325001595 |
| spellingShingle | Victor A.S.V. Bittencourt Massimo Blasone Gennaro Zanfardino Chiral oscillations in quantum field theory Physics Letters B |
| title | Chiral oscillations in quantum field theory |
| title_full | Chiral oscillations in quantum field theory |
| title_fullStr | Chiral oscillations in quantum field theory |
| title_full_unstemmed | Chiral oscillations in quantum field theory |
| title_short | Chiral oscillations in quantum field theory |
| title_sort | chiral oscillations in quantum field theory |
| url | http://www.sciencedirect.com/science/article/pii/S0370269325001595 |
| work_keys_str_mv | AT victorasvbittencourt chiraloscillationsinquantumfieldtheory AT massimoblasone chiraloscillationsinquantumfieldtheory AT gennarozanfardino chiraloscillationsinquantumfieldtheory |