EIT phenomenon for the three-level hydrogen atoms and its application to the era of cosmological recombination

• Published in: Central European journal of physics Vol. 12; no. 5; pp. 367 - 374
• Main Authors: Solovyev, Dmitry, Dubrovich, Victor
• Format: Journal Article
• Language: English
• Published: Heidelberg Versita 01.05.2014; De Gruyter
• Subjects: Biological and Medical Physics; Biophysics; cosmic microwave background; electromagnetically induced transparency; Environmental Physics; external field; Geophysics/Geodesy; hydrogen atom; Physical Chemistry; Physics; Physics and Astronomy; Research Article; cosmic microwave background; external field; electromagnetically induced transparency; hydrogen atom
• ISSN: 1895-1082; 2391-5471; 1644-3608; 2391-5471
• DOI: 10.2478/s11534-014-0452-0

The paper evaluates the contribution of the electromagnetically induced transparency (EIT) phenomenon to the processes of the microwave background (CMB) formation in early universe. We found the additional function f to the integrated line absorption coefficient. This makes it the necessity to upgrade the Sobolev escape probability: p ij ( τ S ) → p ij ( τ S · (1 + f )). We calculated the magnitude of the function f for different schemes of the hydrogen atom in the three-level approximation in terms of the field parameters. The electric field amplitudes are defined using the CMB distribution. We found that the contribution of f can be significant in some cases.