Code comparison for fast flavor instability simulations

被引:41
作者
Richers, Sherwood [1 ]
Duan, Huaiyu [2 ]
Wu, Meng-Ru [3 ,4 ]
Bhattacharyya, Soumya [3 ,5 ]
Zaizen, Masamichi [6 ,7 ]
George, Manu [3 ]
Lin, Chun-Yu [8 ]
Xiong, Zewei [9 ]
机构
[1] Univ Calif Berkeley, Dept Phys, Berkeley, CA 94720 USA
[2] Univ New Mexico, Dept Phys & Astron, Albuquerque, NM 87131 USA
[3] Acad Sinica, Inst Phys, Taipei 11529, Taiwan
[4] Acad Sinica, Inst Astron & Astrophys, Taipei 10617, Taiwan
[5] Tata Inst Fundamental Res, Homi Bhabha Rd, Mumbai 400005, India
[6] Waseda Univ, Fac Sci & Engn, Tokyo 1698555, Japan
[7] Univ Tokyo, Grad Sch Sci, Dept Astron, Tokyo 1130033, Japan
[8] Natl Appl Res Labs, Natl Ctr High Performance Comp, Hsinchu Sci Pk, Hsinchu 30076, Taiwan
[9] GSI Helmholtzzentrum Schwerionenforschung, Planckstr 1, D-64291 Darmstadt, Germany
基金
美国国家科学基金会; 欧洲研究理事会;
关键词
SUPERNOVA SIMULATIONS;
D O I
10.1103/PhysRevD.106.043011
中图分类号
P1 [天文学];
学科分类号
0704 ;
摘要
The fast flavor instability (FFI) is expected to be ubiquitous in core-collapse supernovae and neutron star mergers. It rapidly shuffles neutrino flavor in a way that could impact the explosion mechanism, neutrino signals, mass outflows, and nucleosynthesis. The variety of initial conditions and simulation methods employed in simulations of the FFI prevent an apples-to-apples comparison of the results. We simulate a standardized test problem using five independent codes and verify that they are all faithfully simulating the underlying quantum kinetic equations under the assumptions of axial symmetry and homogeneity in two directions. We quantify the amount of numerical error in each method and demonstrate that each method is superior in at least one metric of this error. We make the results publicly available to serve as a benchmark.
引用
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页数:10
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