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Amplification of mean magnetic field and magnetic helicity production in hot lepton plasma of early universe

  • Tests of New Physics in Rare Processes and Cosmic Rays
  • Elementary Particles and Fields: Theory
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Abstract

We argue that the magnetic helicity conservation is violated at the lepton stage in the evolution of early Universe owing to the parity violation in the Standard Model of electroweak interactions. As a result, a cosmological magnetic field which can be a seed for the galactic dynamo obtains from the beginning a substantial magnetic helicity which has to be taken into account in the magnetic helicity balance at the later stage of galactic dynamo. The particle physics mechanism suggested in our works depends neither on helicity of matter turbulence with plasma vortices resulting in the standard α effect in dynamo theory nor on general rotation. The mechanism can result in a self-exitation of an (almost) uniform cosmological magnetic field.

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Authors and Affiliations

  1. Institute of the Terrestrial Magnetism, Ionosphere and Radiowave Propagation, Russian Academy of Sciencies (IZMIRAN), Troitsk, Moscow oblast, 142190, Russia

    V. B. Semikoz & D. D. Sokoloff

  2. Department of Physics, Moscow State University, Moscow, 119899, Russia

    D. D. Sokoloff

Authors
  1. V. B. Semikoz
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  2. D. D. Sokoloff
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The text was submitted by the authors in English.

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Semikoz, V.B., Sokoloff, D.D. Amplification of mean magnetic field and magnetic helicity production in hot lepton plasma of early universe. Phys. Atom. Nuclei 70, 150–155 (2007). https://doi.org/10.1134/S1063778807010176

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  • DOI: https://doi.org/10.1134/S1063778807010176

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