Primordial hypermagnetic knots

  title={Primordial hypermagnetic knots},
  author={Massimo Giovannini},
  journal={Physical Review D},
Topologically non-trivial configurations of the hypermagnetic flux lines lead to the formation of hypermagnetic knots (HK) whose decay might seed the Baryon Asymmetry of the Universe (BAU).HK can be dynamically generated provided a topologically trivial (i.e. stochastic) distribution of flux lines is already present in the symmetric phase of the electroweak (EW) theory. In spite of the mechanism generating the HK, their typical size must exceed the diffusivity length scale. In the minimal… 
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Palatini approach and large-scale magnetogenesis
  • M. Giovannini
  • Physics
    Journal of Cosmology and Astroparticle Physics
  • 2021
Large-scale magnetogenesis is analyzed within the Palatini approach when the gravitational action is supplemented by a contribution that is nonlinear in the Einstein-Hilbert term. While the addition