论文标题
在扰动理论中的风味混合和翻新
Flavor mixing and renormalization in a perturbation theory
论文作者
论文摘要
讨论了与风味混合的理论的重新规则化，并表明应将物理不稳定的颗粒解释为不能被视为外部状态的准粒子。相应地反驳了关于重新归一化的几种普遍看法，并讨论了物理重态化方案的局限性。此外，通过散射介导的散射研究，研究了具有风味混合（例如衰减宽度）的不稳定颗粒的性能。
The renormalization of theories with flavor mixing is discussed, and it is shown that the physical unstable particles should be interpreted as quasiparticles which cannot be regarded as external states. Several popular beliefs on renormalization are disproved accordingly, and the limitations of physical renormalization schemes are discussed. In addition, the properties of unstable particles with flavor mixing such as decay widths are studied from scattering mediated by them.
