COMPUTATION OF CRITICAL EXPONENT-ETA AT O(1/N(F)(2) IN QUANTUM ELECTRODYNAMICS IN ARBITRARY DIMENSIONS

被引：37
作者：
GRACEY, JA
机构：
[1] Department of Applied Mathematics and Theoretical Physics, University of Liverpool, Liverpool, L69 3BX
来源：
NUCLEAR PHYSICS B | 1994年 / 414卷 / 03期
关键词：
D O I：
10.1016/0550-3213(94)90257-7
中图分类号：
O412 [相对论、场论]; O572.2 [粒子物理学];
学科分类号：
摘要：
We present a detailed evaluation of eta, the critical exponent corresponding to the electron anomalous dimension, at O(1/N(f)2) in a large flavour expansion of QED in arbitrary dimensions in the Landau gauge. The method involves solving the skeleton Dyson equations with dressed propagators in the critical region of the theory. Various techniques to compute massless two-loop Feynman diagrams, which are of independent interest, are also given.
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页码：614 / 648
页数：35
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