Cosmological chirality and magnetic fields from parity violating particle decays

Alexander Vilenkin (Tufts); Tanmay Vachaspati (ASU)

Cosmological chirality and magnetic fields from parity violating particle decays

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arxiv 2101.06344 v1 pith:ULG2VFYG submitted 2021-01-16 hep-ph astro-ph.COhep-th

Tanmay Vachaspati (ASU) , Alexander Vilenkin (Tufts) This is my paper · ORCID

classification hep-phastro-ph.COhep-th

keywords chiralitycosmologicaldecaysmagneticparityviolatingchiral-magneticcontribution

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We estimate the chirality of the cosmological medium due to parity violating decays of standard model particles, focusing on the example of tau leptons. The non-trivial chirality is however too small to make a significant contribution to the cosmological magnetic field via the chiral-magnetic effect.

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Spectra of magnetic fields from electroweak symmetry breaking
astro-ph.CO 2024-12 conditional novelty 7.0 of 10

Magnetic fields generated at electroweak symmetry breaking have a k^4 energy spectrum, not k^3 as previously claimed, according to non-dynamical Kibble-mechanism simulations.

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