Primordial Magnetic Fields and the Peccei-Quinn Scale

Details Primordial Magnetic Fields and the Peccei-Quinn Scale Primordial Magnetic Fields and the Peccei-Quinn Scale

2006-11-07

arxiv.org/abs/astro-ph/0611207v1

Astronomy and Astrophysics

Astrophysics

4 pages, 1 figure

Scientific paper

A strong primordial magnetic field can induce a relaxation of the present
bound on the PQ-constant. We show that, considering the present limits on
primordial magnetic fields, a value for the PQ-constant very close to the GUT
scale is not excluded. This result naturally opens the possibility for the
axion to be defined in the context of the GUT theories.

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