Ward-Takahashi Identity for Vertex Functions of \(\text{sQED}\)

Ha Thanh Hung; Le Tho Hue; Hoang Ngoc Long

doi:10.15625/0868-3166/23/1/2604

Ward-Takahashi Identity for Vertex Functions of \(\text{sQED}\)

Ha Thanh Hung, Le Tho Hue, Hoang Ngoc Long

Author affiliations

Authors

Ha Thanh Hung Institute of Physics, VAST
Le Tho Hue Institute of Physics, VAST
Hoang Ngoc Long Institute of Physics, VAST

DOI:

https://doi.org/10.15625/0868-3166/23/1/2604

Abstract

Ward-Takahashi identity is an useful tool for calculatingamplitude of scattering processes. In the high-order perturbative theory of sQED, propagator and vertex functions contain many high-order corrections. By using Ward-Takahashi identity, each vertex function is separated into two parts: ``longitudinal'' and ``transverse'' part. The longitudinal part can be directly calculated from Ward-Takahashi identity. The transverse part depends on the expanding of specific orders of the theory. In this report, we present one method based on the Ward-Takahashi identity, to calculate this part of vertex functions at the one-loop order in arbitrary gauge and dimensions in sQED.

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Published

10-04-2013

How to Cite

[1]

H. T. Hung, L. T. Hue and H. N. Long, Ward-Takahashi Identity for Vertex Functions of \(\text{sQED}\), Comm. Phys. 23 (2013) 11. DOI: https://doi.org/10.15625/0868-3166/23/1/2604.

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Issue

Vol. 23 No. 1 (2013)

Section

Papers

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