具有闭合费米子环的双圈QED修正
Two-loop QED corrections with closed fermion loops
摘要：
本文计算了类氢离子n=1和n=2态以及核电荷数Z=1-100范围内的所有双圈QED修正。除了在少数情况下在处理费米子环时采用自由环近似外，计算是对束缚强度参数（Z α）的所有阶数进行的。与以前的（Z α）展开计算进行了详细的比较，并确定了高阶余项的阶数α^2（Z α）^6。
英文摘要：
We report a calculation of all two-loop QED corrections with closed fermion loops for the n=1 and n=2 states of H-like ions and for a wide range of the nuclear charge numbers Z=1-100. The calculation is performed to all orders in the binding-strength parameter (Z α), with the exception that in a few cases the free-loop approximation is employed in the treatment of the fermion loops. Detailed comparison is made with previous (Z α)-expansion calculations and the higher-order remainder term to order α^2 (Z α)^6 is identified.
机构、总结、中文摘要均由AI分析而来，可能存在错误，请以论文正文为准。
