Non-perturbative renormalization group analysis of the chiral critical behavior in QED

被引：51

作者：

Aoki, K ^{[1
]}

Morikawa, K ^{[1
]}

Sumi, J ^{[1
]}

Terao, H ^{[1
]}

Tomoyose, M ^{[1
]}

机构：

[1] UNIV GENOA, IST NAZL FIS NUCL, DIPARTIMENT FIS, I-16146 GENOA, ITALY

来源：

PROGRESS OF THEORETICAL PHYSICS | 1997年 / 97卷 / 03期

关键词：

SCHWINGER-DYSON EQUATION; YANG-MILLS THEORY; SYMMETRY-BREAKING; QUANTUM ELECTRODYNAMICS; EFFECTIVE LAGRANGIANS; CRITICAL EXPONENTS; GAUGE-INVARIANCE; BRS SYMMETRY; GROUP FLOW; SCALE;

D O I：

10.1143/PTP.97.479

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

We study the chiral critical behavior of QED using non-perturbative renormalization group (NPRG). Taking account of the non-ladder contributions, our flow equations are free from the gauge parameter alpha dependence. We clarify the chiral phase structure and calculate the anomalous dimension of <(psi)over bar>psi, which is enhanced compared to the ladder approximation. We find that the cutoff scheme dependence of the physical results is very small.

引用

页码：479 / 489

页数：11

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