从物质场Kähler度规看Yukawa物理耦合的层次结构
Hierarchical structure of physical Yukawa couplings from matter field Kähler metric
摘要：
研究了弦紧化中物质场Kähler度规对物理Yukawa耦合的影响。由于Kähler度规通常是非平凡的，物质场的动力学混合为实现物理Yukawa耦合的层次结构开辟了一条新的途径，即使全纯Yukawa耦合具有平凡结构。等级Yukawa耦合证明了在标准嵌入的杂化弦论的背景下，在环形orbifolds和他们的决议的纯无扭模式的耦合。此外，我们还研究了解析轨道上无扭模和有扭模之间的层次耦合。
英文摘要：
We study the impacts of matter field Kähler metric on physical Yukawa couplings in string compactifications. Since the Kähler metric is non-trivial in general, the kinetic mixing of matter fields opens a new avenue for realizing a hierarchical structure of physical Yukawa couplings, even when holomorphic Yukawa couplings have the trivial structure. The hierarchical Yukawa couplings are demonstrated by couplings of pure untwisted modes on toroidal orbifolds and their resolutions in the context of heterotic string theory with standard embedding. Also, we study the hierarchical couplings among untwisted and twisted modes on resolved orbifolds.
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