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Nonperturbative generalization of the Fermi golden rule

  • Methods of Theoretical Physics
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Abstract

The problem of the ejection of an s electron bound in a short-range potential well by a time-independent external electromagnetic field is considered. A simple formula for the probability of the decay of such a state in a tunneling-like process is derived. This formula is applied to the case of simultaneous action of uniform electric and magnetic fields. It is demonstrated that, in the case of a strong magnetic field, the previously reported results need to be refined.

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Authors and Affiliations

  1. National Research Nuclear University MEPhI, Kashirskoe sh. 31, Moscow, 115409, Russia

    B. M. Karnakov

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  1. B. M. Karnakov
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Correspondence to B. M. Karnakov.

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Original Russian Text © B.M. Karnakov, 2015, published in Pis’ma v Zhurnal Eksperimental’noi i Teoreticheskoi Fiziki, 2015, Vol. 101, No. 12, pp. 925–930.

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Karnakov, B.M. Nonperturbative generalization of the Fermi golden rule. Jetp Lett. 101, 825–830 (2015). https://doi.org/10.1134/S0021364015120103

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  • DOI: https://doi.org/10.1134/S0021364015120103

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