Spectral swaps in a two-dimensional neutrino ring model
Abstract
Neutrinos emitted deep within a supernova explosion experience a self-induced index of refraction. In the stationary, one-dimensional (1D) supernova “bulb model,” this self-induced refraction can lead to a collective flavor transformation which is coherent among different neutrino momentum modes. Such collective oscillations can produce partial swaps of the energy spectra of different neutrino species as the neutrinos stream away from the proto-neutron star. However, it has been demonstrated that the spatial symmetries (such as the spherical symmetry in the bulb model) can be broken spontaneously by collective neutrino oscillations in multidimensional models. Using a stationary, 2D neutrino ring model we demonstrate that there exist two limiting scenarios where collective oscillations may occur. In one limit, the collective flavor transformation begins at a radius with relatively high neutrino densities and develops small-scale flavor structures. The loss of the spatial correlation in the neutrino flavor field results in similar (average) energy spectra for the antineutrinos of almost all energies and the neutrinos of relatively high energies. In the other limit, the flavor transformation starts at a radius where the neutrino densities are smaller (e.g., due to the suppression of the high matter density near the proto-neutron star). Although the spatial symmetry ismore »
- Authors:
- Publication Date:
- Research Org.:
- Univ. of New Mexico, Albuquerque, NM (United States); Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States). National Energy Research Scientific Computing Center (NERSC); Oak Ridge Inst. for Science and Education (ORISE), Oak Ridge, TN (United States); Los Alamos National Lab. (LANL), Los Alamos, NM (United States)
- Sponsoring Org.:
- USDOE Office of Science (SC), Nuclear Physics (NP)
- OSTI Identifier:
- 1582495
- Alternate Identifier(s):
- OSTI ID: 1595832; OSTI ID: 1634973
- Report Number(s):
- LA-UR-19-31716
Journal ID: ISSN 2470-0010; PRVDAQ; 023007
- Grant/Contract Number:
- SC0017803; AC52-06NA25396; AC02-05CH11231; SC0014664; 89233218CNA000001
- Resource Type:
- Published Article
- Journal Name:
- Physical Review D
- Additional Journal Information:
- Journal Name: Physical Review D Journal Volume: 101 Journal Issue: 2; Journal ID: ISSN 2470-0010
- Publisher:
- American Physical Society (APS)
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS; 73 NUCLEAR PHYSICS AND RADIATION PHYSICS; 79 ASTRONOMY AND ASTROPHYSICS; Atomic, Nuclear and Particle Physics
Citation Formats
Martin, Joshua D., Carlson, J., and Duan, Huaiyu. Spectral swaps in a two-dimensional neutrino ring model. United States: N. p., 2020.
Web. doi:10.1103/PhysRevD.101.023007.
Martin, Joshua D., Carlson, J., & Duan, Huaiyu. Spectral swaps in a two-dimensional neutrino ring model. United States. doi:10.1103/PhysRevD.101.023007.
Martin, Joshua D., Carlson, J., and Duan, Huaiyu. Mon .
"Spectral swaps in a two-dimensional neutrino ring model". United States. doi:10.1103/PhysRevD.101.023007.
@article{osti_1582495,
title = {Spectral swaps in a two-dimensional neutrino ring model},
author = {Martin, Joshua D. and Carlson, J. and Duan, Huaiyu},
abstractNote = {Neutrinos emitted deep within a supernova explosion experience a self-induced index of refraction. In the stationary, one-dimensional (1D) supernova “bulb model,” this self-induced refraction can lead to a collective flavor transformation which is coherent among different neutrino momentum modes. Such collective oscillations can produce partial swaps of the energy spectra of different neutrino species as the neutrinos stream away from the proto-neutron star. However, it has been demonstrated that the spatial symmetries (such as the spherical symmetry in the bulb model) can be broken spontaneously by collective neutrino oscillations in multidimensional models. Using a stationary, 2D neutrino ring model we demonstrate that there exist two limiting scenarios where collective oscillations may occur. In one limit, the collective flavor transformation begins at a radius with relatively high neutrino densities and develops small-scale flavor structures. The loss of the spatial correlation in the neutrino flavor field results in similar (average) energy spectra for the antineutrinos of almost all energies and the neutrinos of relatively high energies. In the other limit, the flavor transformation starts at a radius where the neutrino densities are smaller (e.g., due to the suppression of the high matter density near the proto-neutron star). Although the spatial symmetry is broken initially, it is restored as the neutrino densities decrease, and the neutrinos of different flavors partially swap their energy spectra as in the 1D bulb model. This finding may have interesting ramifications in other aspects of supernova physics.},
doi = {10.1103/PhysRevD.101.023007},
journal = {Physical Review D},
number = 2,
volume = 101,
place = {United States},
year = {2020},
month = {1}
}
DOI: 10.1103/PhysRevD.101.023007
Web of Science
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