Truncated Schwinger-Dyson equations and gauge covariance in QED3

被引：42
作者：
Bashir, A. [1 ,2 ,3 ]
Raya, A. [1 ,2 ]
机构：
[1] Univ Michoacana, Inst Fis & Matemat, Morelia 58040, Michoacan, Mexico
[2] Univ Nacl Autonoma Mexico, Inst Ciencias Nucl, Circuito Exterior, Mexico
[3] Univ Durham, IPPP, Durham, England
来源：
FEW-BODY SYSTEMS | 2007年 / 41卷 / 3-4期
关键词：
D O I：
10.1007/s00601-007-0177-3
中图分类号：
O4 [物理学];
学科分类号：
0702 ;
摘要：
We study the Landau-Khalatnikov-Fradkin transformations (LKFT) in momentum space for the dynamically generated mass function in QED3. Starting from the Landau gauge results in the rainbow approximation, we construct solutions in other covariant gauges. We confirm that the chiral condensate is gauge invariant as the structure of the LKFT predicts. We also check that the gauge dependence of the constituent fermion mass is considerably reduced as compared to the one obtained directly by solving SDE.
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页码：185 / 199
页数：15
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