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Gauge independent theory applied to a model of atomic ionization by an intense laser pulse

  • Regular Article
  • Ultraintense and Ultrashort Laser Fields
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Abstract

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.

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Authors and Affiliations

  1. Departamento de Física and Instituto de Física de Buenos Aires, FCEyN, Universidad de Buenos Aires, 1428, Buenos Aires, Argentina

    V. D. Rodríguez

  2. Centro Atómico Bariloche – Instituto Balseiro (Comisión Nacional de Energía Atómica y Universidad Nacional de Cuyo), 8400 S. C. Bariloche, Río Negro, Argentina

    R. O. Barrachina

Authors
  1. V. D. Rodríguez
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  2. R. O. Barrachina
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Correspondence to V. D. Rodríguez.

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Rodríguez, V.D., Barrachina, R.O. Gauge independent theory applied to a model of atomic ionization by an intense laser pulse. Eur. Phys. J. D 64, 593–599 (2011). https://doi.org/10.1140/epjd/e2011-20212-3

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  • DOI: https://doi.org/10.1140/epjd/e2011-20212-3

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