中国科学院
近代物理所8月10日学术报告预告
文章来源:近代物理研究所     发布时间:2017-08-07

  报告题目:Analytic structure, renormalization and gauge covariance of the Schwinger-Dyson equations for QED propagator 

  报告人:Dr. Shaoyang Jia  

   College of William and Mar 

  时间安排:2017年8月10日15:00         

  地点:中国科学院近代物理研究所5号楼1006会议室 

  报告摘要 

  The spectral representation of the QED fermion propagator is closely related to the analytic structure of the propagator as functions on the com- plex momentum plane. When combined with the Ward-Green-Takahashi identity, such a representation allows the propagator Schwinger-Dyson equations to be solved directly in Minkowski space with on-shell renor- malization conditions. We further discuss truncations of the Schwinger- Dyson equations for the QED two-point functions to maintain analytic structures, loop-renormalizability conditions, and gauge covariances. 

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