Primordial magnetic fields from pseudoGoldstone bosons

Jul, 1992
12 pages
Published in:
  • Phys.Rev.D 46 (1992) 5346-5351
e-Print:
Report number:
  • PRINT-92-0448 (CFA,CAMBRIDGE),
  • CFA-3507

Citations per year

19932001200920172025051015202530
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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