Quantum peculiarities of the primordial hydrogen recombination |
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| Authors: | V K Dubrovich |
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| Institution: | (1) Special Astrophysical Observatory, St. Petersburg Branch, Russian Academy of Sciences, St. Petersburg, 196140, Russia |
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| Abstract: | Some problems of the two-photon decay of highly excited atomic hydrogen and helium levels are considered. The necessary accuracy of calculating the transition probabilities is shown to require abandoning the purely dipole approximation in the theory of atomic hydrogen radiation. The range of applicability of the perturbation theory to this process is discussed. We suggest a new mechanism of the Lyman photon redistribution due to very close locations of the 20P and 19P levels in the hydrogen and deuterium atoms, respectively (hydrogen-deuterium resonance). |
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| Keywords: | quantum theory of radiation two-photon processes cosmology recombination cosmic microwave background radiation |
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