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arXiv 1709.05693hep-thhep-ph
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额外维中费米子质量等级的动力学产生

Dynamical generation of fermion mass hierarchy in an extra dimension

Yukihiro Fujimoto, Takashi Miura, Kenji Nishiwaki, Makoto Sakamoto

摘要:

我们提出了一种新的机制,以产生一个费米子的单态生成模型中的费米子质量等级动态。一个五维的规范理论的间隔与点相互作用(零宽度膜)负责实现三代和每一个无质量的零模式本地化的边界上的额外的维度上的部分。标量场的额外维坐标依赖的真空期望值使得局域零模的重叠积分有很大的差异,从而出现指数型费米子质量等级。点相互作用的位置控制着费米子质量等级的大小,并由卡西米尔能量的最小化条件决定。作为Casimir能量最小化的结果,指数质量等级动态地出现。我们还讨论了额外维的稳定性。

英文摘要:

We propose a new mechanism to produce a fermion mass hierarchy dynamically in a model with a singlet generation of fermions. A five dimensional gauge theory on an interval with point interactions (zero-width branes) takes responsibility for realizing three generations and each massless zero mode localizes at boundaries of the segments on the extra dimension. An extra-dimension coordinate-dependent vacuum expectation value of a scalar field makes large differences in overlap integrals of the localized zero modes and then an exponential fermion mass hierarchy can appear. The positions of the point interactions control the magnitude of the fermion mass hierarchy and are determined by the minimization condition of the Casimir energy. As a result of the minimization of the Casimir energy, an exponential mass hierarchy appears dynamically. We also discuss the stability of the extra dimension.

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