论文标题
中微子的碰撞不稳定性及其与紧凑型物体中快速风味转换的相互作用
Collisional instabilities of neutrinos and their interplay with fast flavor conversion in compact objects
论文作者
论文摘要
快速和碰撞的风味不稳定性可能发生在中微子超新星和中子星级合并的中微子解耦区域中。为了更好地了解相关的风味动态，我们在数值上求解了均匀的各向异性模型中碰撞不稳定的进化。在这些计算中，碰撞不稳定是由于中微子不等和抗肿瘤散射率所促进的。我们比较了使用中性电流和带电的相互作用获得的解决方案。然后，我们研究了受到不对称散射率的快速不稳定性的非线性发展，发现证据表明碰撞不稳定的发作是通过快速振荡加速的。我们还讨论了与受碰撞影响快速转化率的其他最新作品的联系。
Fast and collisional flavor instabilities possibly occur in the neutrino decoupling regions of core-collapse supernovae and neutron-star mergers. To gain a better understanding of the relevant flavor dynamics, we numerically solve for the collisionally unstable evolution in a homogeneous, anisotropic model. In these calculations collisional instability is precipitated by unequal neutrino and antineutrino scattering rates. We compare the solutions obtained using neutral-current and charged-current interactions. We then study the nonlinear development of fast instabilities subjected to asymmetric scattering rates, finding evidence that the onset of collisional instability is hastened by fast oscillations. We also discuss connections to other recent works on collision-affected fast flavor conversion.
