Impact of hypermagnetic fields on relic gravitational waves, neutrino oscillations and baryon asymmetry

Abstract

We study the evolution of random hypermagnetic fields (HMFs) in the symmetric phase of the early universe before the electroweak phase transition. The behavior of HMFs is driven by the analog of the chiral magnetic effect accounting for the asymmetries of leptons and Higgs bosons. These asymmetries are also dynamical variables of the model and evolve together with HMFs. Moreover, we account for the contribution of the hyper-MHD turbulence in the effective diffusion coefficient and the $\alpha$-dynamo parameter. The realistic spectrum of seed HMFs consists of two branches: Batchelor and Kolmogorov ones. The impact of HMFs on the production of relic gravitational waves (GWs) and the baryon asymmetry of the universe (BAU), as well as flavor oscillations of supernova neutrinos in the stochastic GWs generated, are considered. We establish the constraint on the strength of the seed HMF comparing the spectral density of produced GWs with the observations of the LIGO-Virgo-KAGRA collaborations. The stronger upper bound on the seed HMF is obtained from the condition of not exceeding the observed value of BAU.

25 pages in World Scientific LaTeX style, 21 eps figures, 1 table; text is revised significantly, several new references are added, version published in Int.J.Mod.Phys.D

References in corpus (14)

• The Chiral Magnetic Effect
• BICEP / Keck XIII: Improved Constraints on Primordial Gravitational Waves using Planck, WMAP, and BICEP/Keck Observations through the 2018 Observing Season
• Upper Limits on the Isotropic Gravitational-Wave Background from Advanced LIGO's and Advanced Virgo's Third Observing Run
• Baryogenesis from Decaying Magnetic Helicity
• Evolution of hydromagnetic turbulence from the electroweak phase transition
• Evolution of Magnetic Fields in Freely Decaying Magnetohydrodynamic Turbulence
• The Photospheric Temperatures of Betelgeuse during the Great Dimming of 2019/2020: No New Dust Required
• Lepton asymmetry growth in the symmetric phase of an electroweak plasma with hypermagnetic fields versus its washing out by sphalerons
• IceCube Search for Neutrinos Coincident with Compact Binary Mergers from LIGO-Virgo's First Gravitational-Wave Transient Catalog
• Influence of the turbulent motion on the chiral magnetic effect in the early Universe
• Relic gravitational waves from the chiral magnetic effect
• Baryon isocurvature constraints on the primordial hypermagnetic fields
• Interaction of supernova neutrinos with stochastic gravitational waves
• Gravitational waves generation in turbulent hypermagnetic fields before the electroweak phase transition

Cited by in corpus (2)

• Spin and flavor oscillations of neutrinos in gravitational fields
• Production of relic gravitational waves and the baryon asymmetry of the universe by random hypermagnetic fields