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Title: Simulation of coherent nonlinear neutrino flavor transformation in the supernova environment: Correlated neutrino trajectories

Abstract

We present results of large-scale numerical simulations of the evolution of neutrino and antineutrino flavors in the region above the late-time post-supernova-explosion proto-neutron star. Our calculations are the first to allow explicit flavor evolution histories on different neutrino trajectories and to self-consistently couple flavor development on these trajectories through forward scattering-induced quantum coupling. Employing the atmospheric-scale neutrino mass-squared difference (vertical bar {delta}m{sup 2} vertical bar {approx_equal}3x10{sup -3} eV{sup 2}) and values of {theta}{sub 13} allowed by current bounds, we find transformation of neutrino and antineutrino flavors over broad ranges of energy and luminosity in roughly the 'bi-polar' collective mode. We find that this large-scale flavor conversion, largely driven by the flavor off-diagonal neutrino-neutrino forward scattering potential, sets in much closer to the proto-neutron star than simple estimates based on flavor-diagonal potentials and Mikheyev-Smirnov-Wolfenstein evolution would indicate. In turn, this suggests that models of r-process nucleosynthesis sited in the neutrino-driven wind could be affected substantially by active-active neutrino flavor mixing, even with the small measured neutrino mass-squared differences.

Authors:
; ; ;  [1]
  1. Department of Physics, University of California, San Diego, La Jolla, California 92093-0319 (United States)
Publication Date:
OSTI Identifier:
20864156
Resource Type:
Journal Article
Journal Name:
Physical Review. D, Particles Fields
Additional Journal Information:
Journal Volume: 74; Journal Issue: 10; Other Information: DOI: 10.1103/PhysRevD.74.105014; (c) 2006 The American Physical Society; Country of input: International Atomic Energy Agency (IAEA); Journal ID: ISSN 0556-2821
Country of Publication:
United States
Language:
English
Subject:
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS; ANTINEUTRINOS; COMPUTERIZED SIMULATION; COSMIC NEUTRINOS; COUPLING; FLAVOR MODEL; MASS DIFFERENCE; NEUTRINO-NEUTRINO INTERACTIONS; NEUTRON STARS; NONLINEAR PROBLEMS; NUCLEOSYNTHESIS; NUMERICAL ANALYSIS; POTENTIALS; R PROCESS; SCATTERING; SUPERNOVAE; TRANSFORMATIONS

Citation Formats

Huaiyu, Duan, Fuller, George M, Carlson, J, Yongzhong, Qian, Theoretical Division, Los Alamos National Laboratory, Los Alamos, New Mexico 87545, and School of Physics and Astronomy, University of Minnesota, Minneapolis, Minnesota 55455. Simulation of coherent nonlinear neutrino flavor transformation in the supernova environment: Correlated neutrino trajectories. United States: N. p., 2006. Web. doi:10.1103/PHYSREVD.74.105014.
Huaiyu, Duan, Fuller, George M, Carlson, J, Yongzhong, Qian, Theoretical Division, Los Alamos National Laboratory, Los Alamos, New Mexico 87545, & School of Physics and Astronomy, University of Minnesota, Minneapolis, Minnesota 55455. Simulation of coherent nonlinear neutrino flavor transformation in the supernova environment: Correlated neutrino trajectories. United States. doi:10.1103/PHYSREVD.74.105014.
Huaiyu, Duan, Fuller, George M, Carlson, J, Yongzhong, Qian, Theoretical Division, Los Alamos National Laboratory, Los Alamos, New Mexico 87545, and School of Physics and Astronomy, University of Minnesota, Minneapolis, Minnesota 55455. Wed . "Simulation of coherent nonlinear neutrino flavor transformation in the supernova environment: Correlated neutrino trajectories". United States. doi:10.1103/PHYSREVD.74.105014.
@article{osti_20864156,
title = {Simulation of coherent nonlinear neutrino flavor transformation in the supernova environment: Correlated neutrino trajectories},
author = {Huaiyu, Duan and Fuller, George M and Carlson, J and Yongzhong, Qian and Theoretical Division, Los Alamos National Laboratory, Los Alamos, New Mexico 87545 and School of Physics and Astronomy, University of Minnesota, Minneapolis, Minnesota 55455},
abstractNote = {We present results of large-scale numerical simulations of the evolution of neutrino and antineutrino flavors in the region above the late-time post-supernova-explosion proto-neutron star. Our calculations are the first to allow explicit flavor evolution histories on different neutrino trajectories and to self-consistently couple flavor development on these trajectories through forward scattering-induced quantum coupling. Employing the atmospheric-scale neutrino mass-squared difference (vertical bar {delta}m{sup 2} vertical bar {approx_equal}3x10{sup -3} eV{sup 2}) and values of {theta}{sub 13} allowed by current bounds, we find transformation of neutrino and antineutrino flavors over broad ranges of energy and luminosity in roughly the 'bi-polar' collective mode. We find that this large-scale flavor conversion, largely driven by the flavor off-diagonal neutrino-neutrino forward scattering potential, sets in much closer to the proto-neutron star than simple estimates based on flavor-diagonal potentials and Mikheyev-Smirnov-Wolfenstein evolution would indicate. In turn, this suggests that models of r-process nucleosynthesis sited in the neutrino-driven wind could be affected substantially by active-active neutrino flavor mixing, even with the small measured neutrino mass-squared differences.},
doi = {10.1103/PHYSREVD.74.105014},
journal = {Physical Review. D, Particles Fields},
issn = {0556-2821},
number = 10,
volume = 74,
place = {United States},
year = {2006},
month = {11}
}