ELECTRON MASS ANOMALOUS DIMENSION AT O(1/N(F)2) IN QUANTUM ELECTRODYNAMICS

被引：44
作者：
GRACEY, JA
机构：
[1] Department of Applied Mathematics and Theoretical Physics, University of Liverpool, Liverpool, L69 3BX
来源：
PHYSICS LETTERS B | 1993年 / 317卷 / 03期
关键词：
D O I：
10.1016/0370-2693(93)91017-H
中图分类号：
P1 [天文学];
学科分类号：
0704 ;
摘要：
The critical exponent corresponding to the renormalization of the composite operator psipsiBAR is computed in quantum electrodynamics at O(1/N(f)2) in arbitrary dimensions and covariant gauge at the non-trivial zero of the beta-function in the large N(f) expansion and the exponent corresponding to the anomalous dimension of the electron mass which is a gauge independent object is deduced. Expanding in powers of epsilon = 2 - d/2 we check it is consistent with the known three loop perturbative structure and determine the subsequent coefficients in the coupling constant expansion to all orders in MSBAR.
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页码：415 / 420
页数：6
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