arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 2502.13633hep-ph
收藏

五矢量 $R_ξ$ 规范在高能下无规范抵消

No gauge cancellation at high energy in the five-vector $R_ξ$ gauge

Jaehoon Jeong

AI总结:

在阿贝尔希格斯模型中提出五矢量 $R_ξ$ 规范,使每个费曼图树级振幅高能不发散,并揭示发散起源,为理解有质量规范玻色子纵模动力学提供新视角。

摘要:

我们在阿贝尔希格斯模型中提出了五矢量(5V)框架下的一种新型 $R_ξ$ 规范。在复希格斯场的笛卡尔基下,5V $R_ξ$ 规范确保了每个费曼图在高能极限下的树级振幅不发散。该框架精确指出了每个图的树级振幅中高能发散来源,为量化其他规范中发散程度提供了判据。5V 描述要求将戈德斯通场视为第五个规范场分量,从而为理解有质量规范玻色子(尤其是其纵模)的动力学提供了更深入的见解。通过严格比较 5V $R_ξ$ 规范与常规 4V $R_ξ$ 规范以及费曼图规范(后者与 5V $R_ξ$ 规范类似,不表现出规范抵消)的树级振幅,展示了该框架的影响。

英文摘要:

We propose a novel $R_ξ$ gauge in the five-vector (5V) framework within the Abelian Higgs model. In the Cartesian basis of the complex Higgs field, the 5V $R_ξ$ gauge ensures non-divergent tree-level amplitudes for each Feynman diagram in the high-energy limit. This framework pinpoints the origin of high-energy divergences in tree-level amplitudes for each diagram, providing a criterion for quantifying the degree of divergences from other gauges. The 5V description necessitates treating the Goldstone field as the fifth gauge-field component, offering deeper insight into the dynamics of massive gauge bosons, particularly its longitudinal mode. The impact of this framework is demonstrated by rigorously comparing tree-level amplitudes from the 5V $R_ξ$ gauge with those from the conventional 4V $R_ξ$ gauge and the Feynman diagram gauge, the latter of which exhibits no gauge cancellation, similar to the 5V $R_ξ$ gauge.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

↑