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arXiv 0807.2696hep-th
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电场背景下QED的有效Action

Effective Action of QED in Electric Field Backgrounds

Sang Pyo Kim, Hyun Kyu Lee, Yongsung Yoon

摘要:

我们利用演化算符方法,根据进出真空之间的Bogoliubov系数,求出了电场背景下标量和旋量QED的单圈有效作用量。我们得到了索特型电场的精确单圈有效作用量E_0 sech ^2(t/tau),并表明虚部正确地给出了真空持久性。重整化有效作用量给出了常数场和Sauter型电场的真空持久性与产生对的总平均数之间的一般关系。

英文摘要:

We use the evolution operator method to find the one-loop effective action of scalar and spinor QED in electric field backgrounds in terms of the Bogoliubov coefficient between the ingoing and the outgoing vacua. We obtain the exact one-loop effective action for a Sauter-type electric field, E_0 sech^2 (t/tau), and show that the imaginary part correctly yields the vacuum persistence. The renormalized effective action shows the general relation between the vacuum persistence and the total mean number of created pairs for the constant and the Sauter-type electric field.

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。

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