Influence of the hypermagnetic field noise on the baryon asymmetry generation in the symmetric phase of the early universe

Abstract We study a matter turbulence caused by strong random hypermagnetic fields (HMFs) that influence the baryon asymmetry evolution due to the Abelian anomalies in the symmetric phase in the early Universe. Such a matter turbulence is stipulated by the presence of the advection term in the induc...

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Autores principales:	Maxim Dvornikov, Victor B. Semikoz
Formato:	article
Lenguaje:	EN
Publicado:	SpringerOpen 2021
Materias:	Astrophysics QB460-466 Nuclear and particle physics. Atomic energy. Radioactivity QC770-798
Acceso en línea:	https://doaj.org/article/ae2ea70db6e64cd885752c248b8591ad
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spelling	oai:doaj.org-article:ae2ea70db6e64cd885752c248b8591ad2021-11-14T12:13:48ZInfluence of the hypermagnetic field noise on the baryon asymmetry generation in the symmetric phase of the early universe10.1140/epjc/s10052-021-09794-21434-60441434-6052https://doaj.org/article/ae2ea70db6e64cd885752c248b8591ad2021-11-01T00:00:00Zhttps://doi.org/10.1140/epjc/s10052-021-09794-2https://doaj.org/toc/1434-6044https://doaj.org/toc/1434-6052Abstract We study a matter turbulence caused by strong random hypermagnetic fields (HMFs) that influence the baryon asymmetry evolution due to the Abelian anomalies in the symmetric phase in the early Universe. Such a matter turbulence is stipulated by the presence of the advection term in the induction equation for which a fluid velocity is dominated by the Lorentz force in the Navier–Stokes equation. For random HMFs, having nonzero mean squared strengths, we calculate the spectra for the HMF energy and the HMF helicity densities. The latter function governs the evolution of the fermion asymmetries in the symmetric phase before the electroweak phase transition (EWPT). In the simplest model based on the first SM generation for the lepton asymmetries of $$e_\mathrm {R,L}$$ e R , L and $$\nu _{e_\mathrm {L}}$$ ν e L , we calculate a decline of all fermion asymmetries including the baryon asymmetry, given by the ‘t Hooft conservation law, when one accounts for a turbulence of HMFs during the universe cooling down to EWPT. We obtain that the stronger the mean squared strength of random initial HMFs is, the deeper the fermion asymmetries decrease, compared to the case in the absence of any turbulence.Maxim DvornikovVictor B. SemikozSpringerOpenarticleAstrophysicsQB460-466Nuclear and particle physics. Atomic energy. RadioactivityQC770-798ENEuropean Physical Journal C: Particles and Fields, Vol 81, Iss 11, Pp 1-8 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	Astrophysics QB460-466 Nuclear and particle physics. Atomic energy. Radioactivity QC770-798
spellingShingle	Astrophysics QB460-466 Nuclear and particle physics. Atomic energy. Radioactivity QC770-798 Maxim Dvornikov Victor B. Semikoz Influence of the hypermagnetic field noise on the baryon asymmetry generation in the symmetric phase of the early universe
description	Abstract We study a matter turbulence caused by strong random hypermagnetic fields (HMFs) that influence the baryon asymmetry evolution due to the Abelian anomalies in the symmetric phase in the early Universe. Such a matter turbulence is stipulated by the presence of the advection term in the induction equation for which a fluid velocity is dominated by the Lorentz force in the Navier–Stokes equation. For random HMFs, having nonzero mean squared strengths, we calculate the spectra for the HMF energy and the HMF helicity densities. The latter function governs the evolution of the fermion asymmetries in the symmetric phase before the electroweak phase transition (EWPT). In the simplest model based on the first SM generation for the lepton asymmetries of $$e_\mathrm {R,L}$$ e R , L and $$\nu _{e_\mathrm {L}}$$ ν e L , we calculate a decline of all fermion asymmetries including the baryon asymmetry, given by the ‘t Hooft conservation law, when one accounts for a turbulence of HMFs during the universe cooling down to EWPT. We obtain that the stronger the mean squared strength of random initial HMFs is, the deeper the fermion asymmetries decrease, compared to the case in the absence of any turbulence.
format	article
author	Maxim Dvornikov Victor B. Semikoz
author_facet	Maxim Dvornikov Victor B. Semikoz
author_sort	Maxim Dvornikov
title	Influence of the hypermagnetic field noise on the baryon asymmetry generation in the symmetric phase of the early universe
title_short	Influence of the hypermagnetic field noise on the baryon asymmetry generation in the symmetric phase of the early universe
title_full	Influence of the hypermagnetic field noise on the baryon asymmetry generation in the symmetric phase of the early universe
title_fullStr	Influence of the hypermagnetic field noise on the baryon asymmetry generation in the symmetric phase of the early universe
title_full_unstemmed	Influence of the hypermagnetic field noise on the baryon asymmetry generation in the symmetric phase of the early universe
title_sort	influence of the hypermagnetic field noise on the baryon asymmetry generation in the symmetric phase of the early universe
publisher	SpringerOpen
publishDate	2021
url	https://doaj.org/article/ae2ea70db6e64cd885752c248b8591ad
work_keys_str_mv	AT maximdvornikov influenceofthehypermagneticfieldnoiseonthebaryonasymmetrygenerationinthesymmetricphaseoftheearlyuniverse AT victorbsemikoz influenceofthehypermagneticfieldnoiseonthebaryonasymmetrygenerationinthesymmetricphaseoftheearlyuniverse
_version_	1718429366759718912

Influence of the hypermagnetic field noise on the baryon asymmetry generation in the symmetric phase of the early universe

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