Strong-field approximation for intense-laser atom processes: the choice of gauge
Quantum Physics
2009-11-11 v1
Abstract
The strong-field approximation can be and has been applied in both length gauge and velocity gauge with quantitatively conflicting answers. For ionization of negative ions with a ground state of odd parity, the predictions of the two gauges differ qualitatively: in the envelope of the angular-resolved energy spectrum, dips in one gauge correspond to humps in the other. We show that the length-gauge SFA matches the exact numerical solution of the time-dependent Schr\"odinger equation.
Cite
@article{arxiv.quant-ph/0504053,
title = {Strong-field approximation for intense-laser atom processes: the choice of gauge},
author = {D. Bauer and D. B. Milosevic and W. Becker},
journal= {arXiv preprint arXiv:quant-ph/0504053},
year = {2009}
}
Comments
5 pages, 3 figures, revtex4