Generalized gauge-invariant formulations of the strong-field approximation
Atomic Physics
2009-11-13 v1
Abstract
The gauge problem in the so-called strong-field approximation (SFA) describing atomic or molecular systems exposed to intense laser fields is investigated. Introducing a generalized gauge and partitioning of the Hamiltonian it is demonstrated that the S-matrix expansion obtained in the SFA depends on both gauge and partitioning in such a way that two gauges always yield the same S-matrix expansion, if the partitioning is properly chosen.
Cite
@article{arxiv.0809.2962,
title = {Generalized gauge-invariant formulations of the strong-field approximation},
author = {Yulian V. Vanne and Alejandro Saenz},
journal= {arXiv preprint arXiv:0809.2962},
year = {2009}
}
Comments
11 pages