Year: 2025
Type: article
Abstract: 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 nondivergent 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.
Author: Jaehoon Jeong
Institution: Korea Institute for Advanced Study
Language: English
Subfield: Nuclear and High Energy Physics
Field: Physics and Astronomy
Domain: Physical Sciences
Open Access status: hybrid
Award: G7555535998
OpenAlex ID: W4409922180