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Neutrino Flavor Transformation in Neutron Star Mergers

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arxiv 2503.11758 v2 pith:TQ2VIRV3 submitted 2025-03-14 astro-ph.HE gr-qc

Yi Qiu , David Radice , Sherwood Richers , Maitraya Bhattacharyya This is my paper
classification astro-ph.HEgr-qc
keywords flavorneutrinocompositionimpactmergersneutronstartransformations
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We present the first numerical relativity simulations including neutrino flavor transformations that could result from flavor instabilities, quantum many-body effects, or potential beyond standard model physics in neutron star mergers. We find that neutrino flavor transformations impact the composition and structure of the remnant, potentially leaving an imprint on the post-merger gravitational-wave signal. They also have a significant impact on the composition and nucleosynthesis yields of the ejecta.

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Cited by 4 Pith papers

Reviewed papers in the Pith corpus that reference this work. Sorted by Pith novelty score. Full citation record

  1. Local-equilibrium theory of neutrino oscillations

    hep-ph 2025-06 conditional novelty 7.0 of 10

    The authors generalize neutrino flavor-wave linear analysis to arbitrary mixing-equilibrium backgrounds and propose a kinetic-theory closure for turbulent flavor-wave viscosity.

  2. Predicting the outcome of collisional neutrino flavor conversion

    hep-ph 2025-05 conditional novelty 7.0 of 10

    Collisional neutrino flavor instabilities settle into a state at the edge of instability with nonzero flavor coherence, and explicit formulas predict this final state.

  3. Prospects for Neutrino Observation and Mass Measurement from Binary Neutron Star Mergers

    hep-ph 2025-11 conditional novelty 6.0 of 10

    Binary neutron star merger neutrinos will require a megaton-scale detector and decades of operation to detect, but a single detected neutrino could set a sub-eV (~0.1 eV) limit on the lightest neutrino mass via gravit...

  4. Comparative Testing of Subgrid Models for Fast Neutrino Flavor Conversions in Core-collapse Supernova Simulations

    astro-ph.HE 2025-06 conditional novelty 6.0 of 10

    A 1D supernova simulation with four-species BGK subgrid modeling shows that three-species assumptions overestimate flavor conversion and that semi-implicit time integration is the most reliable.

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