Impact of Primordial Magnetic Fields on the First-Order Electroweak Phase Transition
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arXiv
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| Main Authors: | , , |
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| Format: | Preprint |
| Published: |
2025
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| _version_ | 1866918121119416320 |
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| author | Di, Yuefeng Bian, Ligong Cai, Rong-Gen |
| author_facet | Di, Yuefeng Bian, Ligong Cai, Rong-Gen |
| contents | We numerically study how the primordial magnetic field affects the first-order electroweak phase transition in the early Universe. We observe that: 1) the phase transition process would be slowed down by the magnetic field; 2) the phenomenon of vortex structure of the Higgs condensation appears when the homogenesis hypermagentic field $g'B_Y^{ex}/m_W^2\gtrsim3.63$; and, 3) the helical hypermagnetic field can dramatically enhance the sphaleron rate and validate the generation of the baryon asymmetry through the chiral anomaly. |
| format | Preprint |
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arxiv_https___arxiv_org_abs_2508_07416 |
| institution | arXiv |
| publishDate | 2025 |
| record_format | arxiv |
| spellingShingle | Impact of Primordial Magnetic Fields on the First-Order Electroweak Phase Transition Di, Yuefeng Bian, Ligong Cai, Rong-Gen High Energy Physics - Phenomenology Cosmology and Nongalactic Astrophysics High Energy Physics - Lattice High Energy Physics - Theory We numerically study how the primordial magnetic field affects the first-order electroweak phase transition in the early Universe. We observe that: 1) the phase transition process would be slowed down by the magnetic field; 2) the phenomenon of vortex structure of the Higgs condensation appears when the homogenesis hypermagentic field $g'B_Y^{ex}/m_W^2\gtrsim3.63$; and, 3) the helical hypermagnetic field can dramatically enhance the sphaleron rate and validate the generation of the baryon asymmetry through the chiral anomaly. |
| title | Impact of Primordial Magnetic Fields on the First-Order Electroweak Phase Transition |
| topic | High Energy Physics - Phenomenology Cosmology and Nongalactic Astrophysics High Energy Physics - Lattice High Energy Physics - Theory |
| url | https://arxiv.org/abs/2508.07416 |