论文标题
没有风味状态的中微子风味振荡
Neutrino flavor oscillations without flavor states
论文作者
论文摘要
我们通过受费米相互作用理论的物理学启发的费米子粒子探测器模型分析了中微子振荡的问题。该模型自然会导致描述中微子在局部两级系统方面的发射和吸收。通过明确包括源和检测器作为动力学的一部分，形式主义被证明可以恢复中微子振荡的标准结果，而无需提及“风味状态”，而“风味状态”在量子场理论中是不明显的。这说明了粒子探测器模型如何提供一个强大的理论工具来处理量子场理论中的测量问题，并强调，尽管有时有时有用，但风味状态的概念在中微子现象学中不得发挥任何至关重要的作用。
We analyze the problem of neutrino oscillations via a fermionic particle detector model inspired by the physics of the Fermi theory of weak interactions. The model naturally leads to a description of emission and absorption of neutrinos in terms of localized two-level systems. By explicitly including source and detector as part of the dynamics, the formalism is shown to recover the standard results for neutrino oscillations without mention to "flavor states", which are ill defined in quantum field theory. This illustrates how particle detector models provide a powerful theoretical tool to approach the measurement issue in quantum field theory and emphasizes that the notion of flavor states, although sometimes useful, must not play any crucial role in neutrino phenomenology.
