Explicit derivation of the QED trace anomaly in symmetry-preserving loop regularization at one-loop level
文献类型：期刊论文
| 作者 | Cui, JW ; Ma, YL ; Wu, YL |
| 刊名 | PHYSICAL REVIEW D
 |
| 出版日期 | 2011 |
| 卷号 | 84期号:2 |
| ISSN号 | 1550-7998 |
| 关键词 | ENERGY-MOMENTUM-TENSOR BETA-FUNCTION RENORMALIZATION ELECTRODYNAMICS QFTS |
| 通讯作者 | Cui, JW: Tsinghua Univ, Ctr High Energy Phys, Dept Engn Phys, Beijing 100084, Peoples R China. |
| 中文摘要 | The QED trace anomaly is calculated at one-loop level based on the loop regularization method which is realized in 4-dimensional space-time and preserves gauge symmetry and Poincare symmetry in spite of the introduction of two mass scales, namely, the ultraviolet (UV) cutoff M(c) and infrared (IR) cutoff mu(s). It is shown that the dilation Ward identity which relates the three-point diagrams with the vacuum polarization diagrams gets the standard form of trace anomaly through quantum corrections in taking the consistent limit M(c) -> 1 and mu(s) = 0 which recovers the original integrals. This explicitly demonstrates that the loop regularization method is indeed a self-consistent regularization scheme which is applicable to the calculations not only for the chiral anomaly but also for the trace anomaly, at least at one-loop level. It is also seen that the consistency conditions which relate the tensor-type and scalar-type irreducible loop integrals (ILIs) are crucial for obtaining a consistent result. As a comparison, we also present the one-loop calculations by using the usual Pauli-Villars regularization and the dimensional regularization. |
| 资助信息 | National Nature Science Foundation of China (NSFC) [10975170, 10821504, 10905084]; Chinese Academy of Science; MEXT [2104]; National Science Foundation of China (NNSFC) [10905060]; China Postdoctoral Science Foundation (CPSF) [20090460364] |
| 收录类别 | SCI |
| 语种 | 英语 |
| 公开日期 | 2013-09-17 |
| 源URL | [http://ir.iphy.ac.cn/handle/311004/37833]  |
| 专题 | 物理研究所_物理所公开发表论文_物理所公开发表论文_期刊论文 |
| 推荐引用方式 GB/T 7714 | Cui, JW,Ma, YL,Wu, YL. Explicit derivation of the QED trace anomaly in symmetry-preserving loop regularization at one-loop level[J]. PHYSICAL REVIEW D,2011,84(2). |
| APA | Cui, JW,Ma, YL,&Wu, YL.(2011).Explicit derivation of the QED trace anomaly in symmetry-preserving loop regularization at one-loop level.PHYSICAL REVIEW D,84(2). |
| MLA | Cui, JW,et al."Explicit derivation of the QED trace anomaly in symmetry-preserving loop regularization at one-loop level".PHYSICAL REVIEW D 84.2(2011). |
入库方式： OAI收割
来源：物理研究所
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