Pair creation enhancement due to combined external fields

被引：64
作者：
Jiang, M. [1 ]
Su, W. [2 ]
Lv, Z. Q. [2 ]
Lu, X. [1 ]
Li, Y. J. [2 ]
Grobe, R. [3 ,4 ,5 ]
Su, Q. [1 ,4 ,5 ]
机构：
[1] Chinese Acad Sci, Beijing Natl Lab Condensed Matter Phys, Inst Phys, Beijing 100190, Peoples R China
[2] China Univ Min & Technol, Coll Sci, Beijing 100083, Peoples R China
[3] Max Planck Inst Kernphys, D-69117 Heidelberg, Germany
[4] Illinois State Univ, Intense Laser Phys Theory Unit, Normal, IL 61790 USA
[5] Illinois State Univ, Dept Phys, Normal, IL 61790 USA
来源：
PHYSICAL REVIEW A | 2012年 / 85卷 / 03期
基金：
美国国家科学基金会;
关键词：
ELECTRIC-FIELD; POSITRON; VACUUM; LIGHT;
D O I：
10.1103/PhysRevA.85.033408
中图分类号：
O43 [光学];
学科分类号：
070207 ; 0803 ;
摘要：
We study the creation of electron-positron pairs from the vacuum induced by a combination of a static electric field and an alternating field. We find that the overall pair production can be increased by two orders of magnitude compared to the yields associated with each field individually. We examine the interesting case where both fields are spatially localized, permitting us to examine the time evolution of the spatial density for the created particle pairs. We find that there are a variety of competing mechanisms that contribute to the total yield.
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页数：12
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