Primordial Magnetic Fields, Right Electrons, and the Abelian Anomaly
- Theory Division, CERN, 1211 Geneve 23 (Switzerland)
- School of Mathematics, Trinity College, Dublin 2 (Ireland)
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 grand unified theory scale, is unstable to the generation of hypercharge magnetic field. Quite large magnetic fields ({approximately}10{sup 22} G at T{approximately}100 GeV with typical inhomogeneity scale {approximately}10{sup 6}/T) can be generated. These fields may be of cosmological interest, potentially acting as seeds for amplification to larger scale magnetic fields through nonlinear mechanisms. Previously derived bounds on exotic B{minus}L violating operators may also be evaded. {copyright} {ital 1997 } {ital The American Physical Society}
- OSTI ID:
- 538594
- Journal Information:
- Physical Review Letters, Vol. 79, Issue 7; Other Information: PBD: Aug 1997
- Country of Publication:
- United States
- Language:
- English
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