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Information × Registration Number 0223U004968, 0123U102737 , R & D reports Title Generation and evolution of primordial magnetic fields popup.stage_title Head Horbar Eduard V., Доктор фізико-математичних наук Registration Date 11-12-2023 Organization Taras Shevchenko National University of Kyiv popup.description2 Research object: electromagnetic fields in the early Universe, the Schwinger effect, axion inflation, novel inflationary models. Purpose of the work: to describe self-consistently the generation of electromagnetic fields in inflationary models, and their evolution in ultrarelativistic plasma, in order to explain the observed large-scale magnetic fields in voids, to study the impact of the Schwinger effect on the magnetic field generation in various inflationary models, to study the role of chiral plasma effects and to calculate the spectra of primordial perturbations and CMB induced by these fields. Research methods: quantum kinetic approach, gradient expansion formalism, numerical methods. Results and novelty. A kinetic approach for the description of the generation of magnetic fields in inflationary models with axion coupling was developed and applied for the first time in the literature. A system of quantum kinetic equations which describe the Schwinger effect in the presence of a magnetic field in the expanding Universe was obtained. The value of generated magnetic fields and their spectral characteristics in inflationary models of magnetogenesis were calculated. The generation of chiral asymmetry and chiral charge is found to be efficient in axion inflation, leading to the joint self-consistent evolution of helical magnetic fields and chirality in the early Universe. The results of scientific work were published in 6 articles in journals with quartile Q1, 1 article in a journal with quartile Q2, 1 article in a journal with quartile Q3, 1 article has been accepted for publication in a journal with quartile Q3 and the results of scientific work have been incorporated into the educational process at the Physics Faculty of the Taras Shevchenko National University of Kyiv. In addition, 2 more scientific papers appeared as preprints in the electronic archive and were submitted to scientific journals with quartile Q1.  Product Description popup.authors Lysenko Anastasiya V. Momot Andrii I. Rudenok Igor V. Sobol Oleksandr O. Teslik Olena М. popup.nrat_date 2023-12-11 Close