Pair production beyond the Schwinger formula in time-dependent electric fields

被引：69

作者：

Hebenstreit, F. ^{[1
]}

Alkofer, R. ^{[1
]}

Gies, H. ^{[2
]}

机构：

[1] Karl Franzens Univ Graz, Inst Phys, A-8010 Graz, Austria

[2] Univ Jena, Theoretisch Physikal Inst, D-07743 Jena, Germany

来源：

PHYSICAL REVIEW D | 2008年 / 78卷 / 06期

关键词：

D O I：

10.1103/PhysRevD.78.061701

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

We investigate electron-positron pair production in pulse-shaped electric background fields using a non-Markovian quantum kinetic equation. We identify a pulse length range for subcritical fields still in the nonperturbative regime where the number of produced pairs significantly exceeds that of a naive expectation based on the Schwinger formula. From a conceptual viewpoint, we find a remarkable quantitative agreement between the ( real time) quantum kinetic approach and the ( imaginary time) effective action approach.

引用

页数：5

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