Transverse Ward-Takahashi identity for the fermion-boson vertex in gauge theories

Authors
He, HX Khanna, FC Takahashi, Y
Citation
Hx. He et al., Transverse Ward-Takahashi identity for the fermion-boson vertex in gauge theories, PHYS LETT B, 480(1-2), 2000, pp. 222-228
Citations number
20
Categorie Soggetti
Physics
Journal title
PHYSICS LETTERS B
ISSN journal
03702693 → ACNP
Volume
480
Issue
1-2
Year of publication
2000
Pages
222 - 228
Database
ISI
SICI code
0370-2693(20000504)480:1-2<222:TWIFTF>2.0.ZU;2-N
Abstract
The transverse Ward-Takahashi (W-T) identity for the fermion-gauge-boson ve rtex in gauge theories is derived by calculating the curl of the time-order ed product of the three-point Function including the vector current operato r. This provides the constraint on the transverse part of the vertex. By co mbining the transverse and normal (longitudinal) W-T identity, we obtain th e full vector-vertex in terms of the axial-vector and tensor vertices. (C) 2000 Published by Elsevier Science B.V. All rights reserved.