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Baryogenesis Induced by Magnetic Field Effects During the Electroweak Phase Transition

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arxiv 2409.16124 v2 pith:2677P5MK submitted 2024-09-24 hep-ph astro-ph.COhep-lat

Yuefeng Di , Ligong Bian , Rong-Gen Cai This is my paper
classification hep-phastro-ph.COhep-lat
keywords fieldmagneticasymmetrybaryonelectroweaknumberphasestrength
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abstract

We numerically investigate the first-order electroweak phase transition in the background of a hypermagnetic field with three-dimensional lattice simulation. The generation of baryon asymmetry is observed, and we present the relationship between baryon number asymmetry and magnetic field strength and its helicity. We find the magnetic field strength required to achieve the correct matter-antimatter asymmetry is about $10^{-17}\sim10^{-14}$ Gauss at present, depending on the correlation length of the helical magnetic field. This study provides a mechanism for explaining the baryon number asymmetry with cosmic magnetic fields.

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Cited by 2 Pith papers

Reviewed papers in the Pith corpus that reference this work. Sorted by Pith novelty score. Full citation record

  1. Testing Nambu-Goto approximation of cosmic string by lattice field simulations

    astro-ph.CO 2025-07 conditional novelty 6.0 of 10

    For strongly coupled local cosmic strings with m_v/m_s ~ 1, the Nambu-Goto gravitational wave spectrum deviates substantially from lattice field theory, while agreement holds for near-global and weakly coupled strings.

  2. Impact of Primordial Magnetic Fields on the First-Order Electroweak Phase Transition

    hep-ph 2025-08 conditional novelty 5.0 of 10

    A primordial hypermagnetic field slows the first-order electroweak transition, forms Higgs vortices above g'B/m_W^2 ~ 3.63, and helical fields boost sphaleron rates and baryon asymmetry.

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