康普顿散射中的重整化链传播子效应（英文）  

The Effect of Renormalized Chain Propagator in Compton Scattering

作　　者：王凯俊[1] 谭德宏[1] 杨玉梅[1] Wang Kai-jun;Tan De-hong;Yang Yu-mei(Dept. of Fundamental Studies,LEU,Chongqing 401311,China)

机构地区：[1]后勤工程学院基础部,重庆401311

出　　处：《后勤工程学院学报》2016年第4期80-85,共6页Journal of Logistical Engineering University

摘　　要：为精确描述康普顿散射过程中高阶传播子对散射结果的影响,在量子电动力学中采用量子场论微扰理论对康普顿散射过程进行高阶圈图解析计算,并采用电子与光子的最小耦合模型对康普顿散射过程中电子重整化链传播子进行了解析计算,获得了相应过程的辐射修正信息。通过分别比较电子树图和重整化单圈传播子条件下康普顿散射的微分截面,发现链图级的辐射修正比单圈图精确度高10-3数量级。研究结果为使用重整化理论来精确描述康普顿散射以及对处理电磁相互作用的内部复杂过程提供了有效的理论依据。In order to estimate the impact on scattering results with higher-order propagator in Comptonscattering, we have a precise calculation work on Compton scattering under higher-order-loop diagram based onquantum field theory perturbation theory in quantum electrodynamics. We revisit the Compton scattering withhelp of electronic renormalized chain propagator in minimal coupling model of electron and photon electromag-netic interaction, radiative correction of which is gotten. By comparing the result of the differential cross sectionof the Compton scattering with electron renormalized propagator at the tree level and the single?loop level respec-tively, it is found that the radiative correction of the chain diagram is better than single-loop diagram at the 10-3level. The result should be able to provide some nice reference to the renormalization theory solution for complexprocess of electronmagnetic interaction.

关 键 词：康普顿散射 微分散射截面 重整化链传播子 

分 类 号：O413.3[理学—理论物理]