标题： 两两中微子转换物理方向的改变：碰撞的影响 显示英文标题

标题： A change of direction in pairwise neutrino conversion physics: The effect of collisions

摘要： 快中微子两两转换可能会影响中微子密集源核心处的味分布。 我们在一个简化的框架内探讨了碰撞与快速转换之间的相互作用，该框架假设在无空间非均匀性的中微子气体中存在角度无关、改变方向的碰撞。 出乎意料的是，我们发现碰撞可能会增强快速味转换，而非抑制它们。 我们的工作强调了在可靠预测快两两转换背景下味结果时，需要自洽地考虑碰撞对中微子角分布的反馈作用的重要性。 显示英文摘要

摘要： Fast pairwise conversions of neutrinos may affect the flavor distribution in the core of neutrino-dense sources. We explore the interplay between collisions and fast conversions within a simplified framework that assumes angle-independent, direction-changing collisions in a neutrino gas that has no spatial inhomogeneity. Counter to expectations, we find that collisions may enhance fast flavor conversions instead of damping them. Our work highlights the need to take into account the feedback of collisions on the neutrino angular distributions self-consistently, in order to predict the flavor outcome in the context of fast pairwise conversions reliably.