Nonlinear flavor development of a two-dimensional neutrino gas
Abstract
We present a numerical survey of the nonlinear flavor development of dense neutrino gases. This study is based on the stationary, two-dimensional (x and z), two-beam, monochromatic neutrino line model with a periodic boundary condition along the x direction. Similar to a previous work, we find that small-scale flavor structures can develop in a neutrino gas even if the physical conditions are nearly homogeneous along the x axis initially. The power diffusion from the large-scale to small-scale structures increases with the neutrino density and helps to establish a semiexponential dependence of the magnitudes of the Fourier moments on the corresponding wave numbers. The overall flavor conversion probabilities in the neutrino gases with small initial sinusoidal perturbations reach certain equilibrium values at large distances, which are mainly determined by the neutrino-antineutrino asymmetry. Similar phenomena also exist in a neutrino gas with a localized initial perturbation, albeit only inside an expanding flavor conversion region. Our work suggests that a statistical treatment may be possible for the collective flavor oscillations of a dense neutrino gas in a multidimensional environment.
- Authors:
- Publication Date:
- Research Org.:
- Univ. of New Mexico, Albuquerque, NM (United States)
- Sponsoring Org.:
- USDOE Office of Science (SC)
- OSTI Identifier:
- 1545468
- Alternate Identifier(s):
- OSTI ID: 1611016
- Grant/Contract Number:
- SC0008142; SC0017803
- Resource Type:
- Published Article
- Journal Name:
- Physical Review D
- Additional Journal Information:
- Journal Name: Physical Review D Journal Volume: 100 Journal Issue: 2; Journal ID: ISSN 2470-0010
- Publisher:
- American Physical Society
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 79 ASTRONOMY AND ASTROPHYSICS; Astronomy & Astrophysics; Physics; Extrasolar neutrino astronomy; Neutrino oscillations; Novae & supernovae
Citation Formats
Martin, Joshua D., Abbar, Sajad, and Duan, Huaiyu. Nonlinear flavor development of a two-dimensional neutrino gas. United States: N. p., 2019.
Web. doi:10.1103/PhysRevD.100.023016.
Martin, Joshua D., Abbar, Sajad, & Duan, Huaiyu. Nonlinear flavor development of a two-dimensional neutrino gas. United States. https://doi.org/10.1103/PhysRevD.100.023016
Martin, Joshua D., Abbar, Sajad, and Duan, Huaiyu. Mon .
"Nonlinear flavor development of a two-dimensional neutrino gas". United States. https://doi.org/10.1103/PhysRevD.100.023016.
@article{osti_1545468,
title = {Nonlinear flavor development of a two-dimensional neutrino gas},
author = {Martin, Joshua D. and Abbar, Sajad and Duan, Huaiyu},
abstractNote = {We present a numerical survey of the nonlinear flavor development of dense neutrino gases. This study is based on the stationary, two-dimensional (x and z), two-beam, monochromatic neutrino line model with a periodic boundary condition along the x direction. Similar to a previous work, we find that small-scale flavor structures can develop in a neutrino gas even if the physical conditions are nearly homogeneous along the x axis initially. The power diffusion from the large-scale to small-scale structures increases with the neutrino density and helps to establish a semiexponential dependence of the magnitudes of the Fourier moments on the corresponding wave numbers. The overall flavor conversion probabilities in the neutrino gases with small initial sinusoidal perturbations reach certain equilibrium values at large distances, which are mainly determined by the neutrino-antineutrino asymmetry. Similar phenomena also exist in a neutrino gas with a localized initial perturbation, albeit only inside an expanding flavor conversion region. Our work suggests that a statistical treatment may be possible for the collective flavor oscillations of a dense neutrino gas in a multidimensional environment.},
doi = {10.1103/PhysRevD.100.023016},
journal = {Physical Review D},
number = 2,
volume = 100,
place = {United States},
year = {2019},
month = {7}
}
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https://doi.org/10.1103/PhysRevD.100.023016
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