Evaluating approximate asymptotic distributions for fast neutrino flavor conversions in a periodic 1D box
Year: 2023
Type: article
Abstract: The fast flavor conversions (FFCs) of neutrinos generally exist in core-collapse supernovae and binary neutron-star merger remnants and can significantly change the flavor composition and affect the dynamics and nucleosynthesis processes. Several analytical prescriptions were proposed recently to approximately explain or predict the asymptotic outcome of FFCs for systems with different initial or boundary conditions, with the aim for providing better understandings of FFCs and for practical implementation of FFCs in hydrodynamic modeling. In this work, we obtain the asymptotic survival probability distributions of FFCs in a survey over thousands of randomly sampled initial angular distributions by means of numerical simulations in one-dimensional boxes with the periodic boundary condition. We also propose improved prescriptions that guarantee the continuity of the angular distributions after FFCs. Detailed comparisons and evaluation of all these prescriptions with our numerical survey results are performed. The survey dataset is made publicly available to inspire the exploration and design for more effective methods applicable to realistic hydrodynamic simulations.
Institutions: GSI Helmholtz Centre for Heavy Ion Research, Institute of Astronomy and Astrophysics, Academia Sinica, Institute of Physics, Academia Sinica, National Center for Theoretical Sciences, National Center for Theoretical Sciences, Physics Division, Academia Sinica, Max Planck Institute for Physics, National Center for High-Performance Computing, National Institutes of Applied Research
Language: English
Topic: Neutrino Physics Research
Subfield: Nuclear and High Energy Physics
Field: Physics and Astronomy
Domain: Physical Sciences
Open Access status: green
Funders: National Science and Technology Council, National Center for Theoretical Sciences, European Commission, Deutsche Forschungsgemeinschaft, Academia Sinica, National Science and Technology Council, Physics Division, National Center for Theoretical Sciences, Horizon 2020 Framework Programme, European Research Council, Mainz Institute for Theoretical Physics, Johannes Gutenberg University Mainz
Awards: G1394709509, G1895631764, G1897041155, G2111766041, G2798655988, G4066435496, G4090823411, G434337789, EXC 2094: ORIGINS: Vom Ursprung des Universums bis zu den ersten Bausteinen des Lebens, G4778188268, G5006537482, G5607711389, G5608225264, Frontiers in Particle and Nuclear Astrophysics: Neutrinos, Nucleosynthesis, and Exotic Physics, G8239358092
OpenAlex ID: W4386439733