Gauge-invariant intense-field approximations to all orders

被引：32
|
作者：
Faisal, F. H. M.
机构：
[1] Univ Bielefeld, Fak Phys, D-33501 Bielefeld, Germany
[2] Harvard Smithsonian Ctr Astrophys, ITAMP, Cambridge, MA 02138 USA
来源：
JOURNAL OF PHYSICS B-ATOMIC MOLECULAR AND OPTICAL PHYSICS | 2007年 / 40卷 / 07期
关键词：
D O I：
10.1088/0953-4075/40/7/F02
中图分类号：
O43 [光学];
学科分类号：
070207 ; 0803 ;
摘要：
We present a gauge-invariant formulation of the so-called strong-field KFR approximations in the 'velocity' and 'length' gauges and demonstrate their equivalence in all orders. The theory thus overcomes a longstanding discrepancy between the strong-field velocity and the length-gauge approximations for non-perturbative processes in intense laser fields.
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页码：F145 / F155
页数：11
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