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Primordial Magnetic Fields, Right Electrons, and the Abelian Anomaly

5 Pith papers cite this work, alongside 435 external citations. Polarity classification is still indexing.

5 Pith papers citing it
435 external citations · Pith
abstract

In the standard model there are charges with abelian anomaly only (e.g. right-handed electron number) which are effectively conserved in the early universe until some time shortly before the electroweak scale. A state at finite chemical potential of such a charge, possibly arising due to asymmetries produced at the GUT scale, is unstable to the generation of hypercharge magnetic field. Quite large magnetic fields ($\sim 10^{22}$ gauss at $T\sim 100$ GeV with typical inhomogeneity scale $ \sim \frac{ 10^6}{T}$) can be generated. These fields may be of cosmological interest, potentially acting as seeds for amplification to larger scale magnetic fields through non-linear mechanisms. Previously derived bounds on exotic $B-L$ violating operators may also be evaded.

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citation-polarity summary

fields

hep-ph 4 gr-qc 1

years

2026 4 2025 1

verdicts

UNVERDICTED 5

roles

background 2

polarities

background 2

representative citing papers

Revisiting constraints on magnetogenesis from baryon asymmetry

hep-ph · 2025-09-28 · unverdicted · novelty 5.0

Maximally helical primordial U(1)_Y magnetic fields can generate both intergalactic magnetic fields and baryon asymmetry; non-helical fields may work if Higgs dynamics compensate helicity loss to ≲10^{-9-10} precision during electroweak crossover.

Plasma heating during the chiral plasma instability

hep-ph · 2026-05-07 · unverdicted · novelty 5.0

During chiral plasma instability, excess energy from chiral asymmetry heats the plasma with δT ~ μ5²/T instead of fully building the helical magnetic field.

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Showing 5 of 5 citing papers.