Leading logarithmic contribution to the second-order lamb shift induced by the loop-after-loop diagram.

نویسنده

  • V A Yerokhin
چکیده

The contribution of order alpha(2)(Zalpha)(6)ln (3)(Zalpha)(-2) to the ground-state Lamb shift in hydrogen induced by the loop-after-loop diagram is evaluated analytically. An additional contribution of this order is found compared to the previous calculation by Karshenboim [Sov. Phys. JETP 76, 541 (1993)]. As a result, agreement is achieved for this correction between different numerical and analytical methods.

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عنوان ژورنال:
  • Physical review letters

دوره 86 10  شماره 

صفحات  -

تاریخ انتشار 2001