论文标题
快速风味不稳定性模拟的代码比较
Code Comparison for Fast Flavor Instability Simulation
论文作者
论文摘要
预计快速风味不稳定性（FFI）在核心折叠超新星和中子星星合并中无处不在。它以一种可能影响爆炸机制，中微子信号，质量流出和核合成的方式快速地散发中微子风味。在模拟FFI中采用的各种初始条件和模拟方法都阻止了苹果对结果的比较。我们使用五个独立的代码模拟了标准化的测试问题，并验证它们都在两个方向上的轴向对称性和同质性的假设下忠实地模拟了基本的量子动力学方程。我们量化了每种方法中的数值误差量，并证明每种方法在至少一个误差的指标中都优越。我们将结果公开用作基准。
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.
