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arXiv · 2505.03886

Sufficient and Necessary Conditions for Collective Neutrino Instability: Fast, Slow, and Mixed

Basudeb Dasgupta·Dwaipayan Mukherjee
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Abstract

Collective neutrino oscillations exhibit instabilities that induce appreciable flavor conversion, with crucial astrophysical implications. While the importance of initial phase-space distributions is well-established, a general instability criterion for distributions dependent on both energy and emission angle has been lacking. We identify and analyze the sufficient (and necessary) conditions for a generic collective neutrino flavor instability.

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Basudeb Dasgupta, Dwaipayan Mukherjee. 2025-05-06. Sufficient and Necessary Conditions for Collective Neutrino Instability: Fast, Slow, and Mixed. https://doi.org/10.1103/bqkr-rcwk

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