Astronomy and Astrophysics – Astrophysics
Scientific paper
2000-09-29
Phys.Rev. D63 (2001) 047301
Astronomy and Astrophysics
Astrophysics
5 pages, Latex, one figure included using epsfig. Four references and a short discussion added. To appear in Phys. Rev. D
Scientific paper
10.1103/PhysRevD.63.047301
We discuss the inflationary production of magnetic seeds for the galactic dynamo through the photon-graviphoton mixing typical of extended models of local supersymmetry. An analisys of the allowed region in parameter space shows that such a mechanism is compatible with existing phenomenological bounds on the vector mass and on the mixing parameter, but requires a large enough mixing that seems difficult to implement naturally in the context of a minimal supersymmetric scenario.
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