Neutrino helicity oscillations in astrophysical environments: a many-body approach
Fuente:
arXiv
Salvato in:
| Autori principali: | , , , , |
|---|---|
| Natura: | Preprint |
| Pubblicazione: |
2026
|
| Soggetti: | |
| Accesso online: | |
| Tags: |
Aggiungi Tag
Nessun Tag, puoi essere il primo ad aggiungerne!!
|
| _version_ | 1866913172735131648 |
|---|---|
| author | Xu, Yiheng Froustey, Julien Fuller, George M. Gráf, Lukáš Patwardhan, Amol V. |
| author_facet | Xu, Yiheng Froustey, Julien Fuller, George M. Gráf, Lukáš Patwardhan, Amol V. |
| contents | Neutrino rest mass enables left-handed states to "flip" to right-handed states and vice versa. In-medium effects can enhance the probability for such spin-flip. We demonstrate that a full many-body calculation of this process in neutrino-dense environments can lead to spin-flip probabilities that exceed by orders of magnitude those calculated with mean-field treatments. We study simple configurations with a few neutrinos in well-defined momentum states, for which we show that the helicity conversion enhancement is connected to many-body momentum exchange. Such an effect would therefore be missed in a calculation that considers only forward processes. We speculate on the potential astrophysical implications of these results and the range of applicability of our calculation and its limitations. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2605_31242 |
| institution | arXiv |
| publishDate | 2026 |
| record_format | arxiv |
| spellingShingle | Neutrino helicity oscillations in astrophysical environments: a many-body approach Xu, Yiheng Froustey, Julien Fuller, George M. Gráf, Lukáš Patwardhan, Amol V. High Energy Physics - Phenomenology High Energy Astrophysical Phenomena Neutrino rest mass enables left-handed states to "flip" to right-handed states and vice versa. In-medium effects can enhance the probability for such spin-flip. We demonstrate that a full many-body calculation of this process in neutrino-dense environments can lead to spin-flip probabilities that exceed by orders of magnitude those calculated with mean-field treatments. We study simple configurations with a few neutrinos in well-defined momentum states, for which we show that the helicity conversion enhancement is connected to many-body momentum exchange. Such an effect would therefore be missed in a calculation that considers only forward processes. We speculate on the potential astrophysical implications of these results and the range of applicability of our calculation and its limitations. |
| title | Neutrino helicity oscillations in astrophysical environments: a many-body approach |
| topic | High Energy Physics - Phenomenology High Energy Astrophysical Phenomena |
| url | https://arxiv.org/abs/2605.31242 |