Many-body neutrino calculations in simple momentum-state configurations yield helicity conversion probabilities orders of magnitude above mean-field results due to momentum exchange.
Collective neutrino flavor conversion: Recent developments
4 Pith papers cite this work, alongside 211 external citations. Polarity classification is still indexing.
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abstract
Neutrino flavor evolution in core-collapse supernovae, neutron-star mergers, or the early universe is dominated by neutrino-neutrino refraction, often spawning "self-induced flavor conversion", i.e., shuffling of flavor among momentum modes. This effect is driven by collective run-away modes of the coupled "flavor oscillators" and can spontaneously break the initial symmetries such as axial symmetry, homogeneity, isotropy, and even stationarity. Moreover, the growth rates of unstable modes can be of the order of the neutrino-neutrino interaction energy instead of the much smaller vacuum oscillation frequency: self-induced flavor conversion does not always require neutrino masses. We illustrate these newly found phenomena in terms of simple toy models. What happens in realistic astrophysical settings is up to speculation at present.
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2026 4representative citing papers
ESSnuSB far detector shows varying event rates across supernova models and potential to distinguish them depending on distance, systematics, and efficiency.
citing papers explorer
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Neutrino helicity oscillations in astrophysical environments: a many-body approach
Many-body neutrino calculations in simple momentum-state configurations yield helicity conversion probabilities orders of magnitude above mean-field results due to momentum exchange.
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Study of Supernova Neutrinos at ESSnuSB
ESSnuSB far detector shows varying event rates across supernova models and potential to distinguish them depending on distance, systematics, and efficiency.
- Flavor Conversion Enhances or Suppresses Supernova Explodability Independent of the Progenitor Mass
- Neutrino Flavor Conversion Shapes the Rate of Failed Core-collapse Supernovae