caa a22 4500 445865318 CHVBK 20180317145456.0 cr unu---uuuuu 170323e20111001xx s 000 0 eng 10.1140/epjd/e2011-20212-3 doi (NATIONALLICENCE)springer-10.1140/epjd/e2011-20212-3 Gauge independent theory applied to a model of atomic ionization by an intense laser pulse [Elektronische Daten] [V. Rodríguez, R. Barrachina] An explicitly gauge invariant strong field theory is introduced and tested using a model laser-atom interaction. The theory relies on a power series in the target potential. Transitions amplitudes are obtained by using a corresponding series in the momentum space wave function. We demonstrate that this approach is explicitly gauge invariant to all orders. A well know 1D delta function potential model is used to test the convergence of the series in the evaluation of total ionization probabilities and ionization spectra. Actually, the convergence is verified when both, the perturbation as well as the order of the expansion, are increased. EDP Sciences, SIF, Springer-Verlag Berlin Heidelberg, 2011 Rodríguez V. Departamento de Física and Instituto de Física de Buenos Aires, FCEyN, Universidad de Buenos Aires, 1428, Buenos Aires, Argentina aut Barrachina R. Centro Atómico Bariloche - Instituto Balseiro (Comisión Nacional de Energía Atómica y Universidad Nacional de Cuyo), 8400 S. C. Bariloche, Río Negro, Argentina aut The European Physical Journal D Springer-Verlag 64/2-3(2011-10-01), 593-599 1434-6060 64:2-3<593 2011 64 10053 https://doi.org/10.1140/epjd/e2011-20212-3 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1140/epjd/e2011-20212-3 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Rodríguez V. Departamento de Física and Instituto de Física de Buenos Aires, FCEyN, Universidad de Buenos Aires, 1428, Buenos Aires, Argentina aut NATIONALLICENCE 700 1- Barrachina R. Centro Atómico Bariloche - Instituto Balseiro (Comisión Nacional de Energía Atómica y Universidad Nacional de Cuyo), 8400 S. C. Bariloche, Río Negro, Argentina aut NATIONALLICENCE 773 0- The European Physical Journal D Springer-Verlag 64/2-3(2011-10-01), 593-599 1434-6060 64:2-3<593 2011 64 10053 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer