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Off-shell green functions: One-loop with growing legs


Bashir, A and Concha-Sanchez, Y and Delbourgo, R and Tejeda-Yeomans, ME, Off-shell green functions: One-loop with growing legs, American Institute of Physics (AIP) Conference Proceedings, 7-12 November 2007, Tuxtla Gutierrez, Mexico, pp. 127-131. ISBN 978-0-7354-0548-6 (2008) [Refereed Conference Paper]

DOI: doi:10.1063/1.2965034


One loop calculations in gauge theories in arbitrary gauge and dimensions become exceedingly hard with growing number of external off-shell legs. Let alone higher point functions, such a calculation for even the three point one-loop vertices for quantum electrodynamics (QED) and quantum chromodynamics (QCD) has been made available only recently. In this article, we discuss how Ward-Fradkin-Green-Takahashi identities (WFGTI) may provide a helpful tool in these computations. After providing a glimpse of our suggestion for the case of the 3-point vertex, we present our preliminary findings towards our similar efforts for the 4-point function. We restrict ourselves to the example of scalar quantum electrodynamics (SQED).

Item Details

Item Type:Refereed Conference Paper
Keywords:particles (nuclear physics), field theory (physics), fields
Research Division:Physical Sciences
Research Group:Particle and high energy physics
Research Field:Particle physics
Objective Division:Expanding Knowledge
Objective Group:Expanding knowledge
Objective Field:Expanding knowledge in the physical sciences
UTAS Author:Delbourgo, R (Professor Robert Delbourgo)
ID Code:90634
Year Published:2008
Deposited By:Mathematics and Physics
Deposited On:2014-04-15
Last Modified:2014-08-28

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