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arXiv · 2008.01660

Influence of a quasi-molecular mechanism of recombination on the formation of hydrogen in the early universe

Tamaz Kereselidze·Irakli Noselidze·John F. Ogilvie
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Abstract

In the framework of a quasi-molecular approach, the formation of hydrogen atom in the pre-recombination period of evolution of the universe is analysed quantitatively. Calculations in an adiabatic multi-level representation enable estimates of probabilities of radiative transitions. The quasi-molecular mechanism of recombination allows the formation of hydrogen molecular ion, $H_2^+$, in its ground state. The probability of this process is comparable with the probability of the creation of atomic hydrogen. The participation of a second proton in the recombination increases the binding energy of an electron and decreases the rate of recombination of hydrogen.

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Tamaz Kereselidze, Irakli Noselidze, John F. Ogilvie. 2020-08-03. Influence of a quasi-molecular mechanism of recombination on the formation of hydrogen in the early universe. https://doi.org/10.1093/mnras%2Fstaa3622

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