Inverse Landau-Khalatnikov transformation and infrared critical exponents of (2+1)-dimensional quantum electrodynamics

被引：35
作者：
Aitchison, IJR
Mavromatos, NE
McNeill, D
机构：
来源：
PHYSICS LETTERS B | 1997年 / 402卷 / 1-2期
关键词：
D O I：
10.1016/S0370-2693(97)00447-4
中图分类号：
P1 [天文学];
学科分类号：
0704 ;
摘要：
By applying an inverse Landau-Khalatnikov transformation, connecting (resummed) Schwinger-Dyson treatments in nonlocal and Landau gauges of QED(3), we derive the infrared behaviour of the wave-function renormalization in the Landau gauge, and the associated critical exponents in the normal phase of the theory (no mass generation). The result agrees with the one conjectured in earlier treatments. The analysis involves an approximation, namely an expansion of the non-local gauge in powers of momenta in the infrared. This approximation is tested by reproducing the critical number of flavours necessary for dynamical mass generation in the chiral-symmetry-broken phase of QED(3). (C) 1997 Elsevier Science B.V.
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收藏
页码：154 / 158
页数：5
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