CHIRAL ANOMALY AND UNAMBIGUOUS TERMS OF EXACT SCALE BEHAVIOR

We perform new explicit and regularization-independent calculations of < AV > amplitude in QED₁₊₁ and amplitude in QED₁₊₃ respectively to reinvestigate the anomaly problem. A kind of finite and unambiguous terms of exact scale behavior (in momentum space) is found to be responsible for the anomalies both in QED₁₊₁ and QED₁₊₁. They come from logarithmically divergent momentum integrals in contrast with the usual knowledge for triaugle anomaly in QED₁₊₃. In QED₁₊₁, this term is also responsible for photon mass generation. Some implications and possible relations with other aspects of anomaly are discussed.     

Trace Anomalies and Chiral Ward Identities

In a simple Abelian spinor field theory, the canonical trace identities for certain axial-vector and axial-scalar operators are re-examined in dimensional regularization, some disagreements with previous results are found and an interesting new phenomenon is observed and briefly discussed。     

毒物分析中四极杆质谱仪扫描速率对灵敏度影响研究

在法庭科学领域,质谱分析(GC-MS、LC-MS、ICP-MS、高分辨质谱、同位素比值质谱等)已成为系统毒物分析(systemmatic toxicological analysis,STA)强有力的工具之一,得到广泛应用.     

基于VPX总线的潜射导弹综合电气系统集成化设计

提出了潜射导弹测控系统集成化设计需求,对VPX总线与其他总线的性能进行了对比,提出了潜射导弹地面综合电气系统集成化设计方案,提出了基于VPX总线的测控系统设计方案。