Gauge-equivalent intense-field approximations in velocity and length gauges to all orders

被引：31

作者：

Faisal, F. H. M.

机构：

[1] Univ Bielefeld, Fak Phys, D-33501 Bielefeld, Germany

[2] Harvard Smithsonian Ctr Astrophys, Inst Theoret Atom & Mol Phys, Cambridge, MA 02138 USA

来源：

PHYSICAL REVIEW A | 2007年 / 75卷 / 06期

关键词：

Laser optics;

D O I：

10.1103/PhysRevA.75.063412

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

A gauge invariant formulation of the so-called intense-field Keldysh-Faisal-Reiss (KFR) approximations in the "velocity" and "length" gauges is given and their equivalence is demonstrated term by term to all orders of the theory. It overcomes a long standing discrepancy between the velocity and the length gauge strong-field KFR amplitudes for nonperturbative processes in intense laser fields.

引用

页数：7

共 8 条

[1] Intense-field many-body S-matrix theory [J].