Niels Bohr Institute

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Supplemental material for "Supernova Neutrino Decoupling Is Altered by Flavor Conversion" (arXiv:2206.00676)

Authors: Shashank Shalgar and Irene Tamborra


In the following animations, the panels on the left show the evolution of $\rho_{ee}$ and $\bar{\rho}_{ee}$ in the plane spanned by $r$ and $\cos\theta$ as functions of the simulation time. The panels on the right display the difference between $\rho_{ee}$ and $\bar{\rho}_{ee}$ with and without flavor transformation. In the initial part of the simulation (first $10^{-4}$ s), flavor conversion is switched off. Once the steady state is reached, we switch on flavor conversion.

Evolution of $\rho_{ee}$ and $\bar{\rho}_{ee}$ without neutrino mixing for the first $10^{-4}$ s (until the steady state is reached). Then, neutrino flavor conversion is switched on for the next $5 \times 10^{-5}$ s.


Download the movie in MPEG-4(mp4) format.
Download the movie in WebM format.

Evolution of $\rho_{ee}$ and $\bar{\rho}_{ee}$ without neutrino transformation for the first $10^{-4}$ s (until the steady state is reached; same as in the movies above). Then, neutrino flavor conversion is switched on for the next $5 \times 10^{-5}$ s, but the advection and collision terms in the Hamiltonian are switched off. By comparing these movies with the ones above, one can appreciate the dynamical effects of advection and collisions on flavor conversion.


Download the movie in MPEG-4(mp4) format.
Download the movie in WebM format.
Please cite the paper if you use the videos in your talk or in any other academic setting.
If you face technical difficulties in accessing the movies or if you wish to discuss the physics behind the simulations please feel free to contact the authors.