Primordial magnetic fields from pseudoGoldstone bosons
Jul, 199212 pages
Published in:
- Phys.Rev.D 46 (1992) 5346-5351
e-Print:
- hep-ph/9209238 [hep-ph]
Report number:
- PRINT-92-0448 (CFA,CAMBRIDGE),
- CFA-3507
Citations per year
Abstract: (arXiv)
The existence of large-scale magnetic fields in galaxies is well established, but there is no accepted mechanism for generating a primordial field which could grow into what is observed today. We discuss a model which attempts to account for the necessary primordial field by invoking a pseudo-Goldstone boson coupled to electromagnetism. The evolution of this boson during inflation generates a magnetic field; however, it seems difficult on rather general grounds to obtain fields of sufficient strength on astrophysically interesting scales.- inflation
- gauge field theory: U(1)
- field theory: scalar
- Goldstone particle
- field equations: solution
- magnetic field
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