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Phys. Rev. D 63, 047301 (2001) [4 pages]

New mechanism for the generation of primordial seeds for the cosmic magnetic fields

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M. Gasperini
Dipartimento di Fisica, Università di Bari, Via G. Amendola 173, 70126 Bari, Italy
Istituto Nazionale di Fisica Nucleare, Sezione di Bari, Bari, Italy

Received 10 July 2000; published 31 January 2001

We discuss the inflationary production of magnetic seeds for the galactic dynamo through photon-graviphoton mixing, typical of extended models of local supersymmetry. An analysis of the allowed region in parameter space shows that such a mechanism is compatible with existing phenomelogical bounds on the vector mass and mixing parameter, but requires a large enough mixing that seems difficult to implement naturally in the context of a minimal supersymmetric scenario.

© 2001 The American Physical Society

URL:
http://link.aps.org/doi/10.1103/PhysRevD.63.047301
DOI:
10.1103/PhysRevD.63.047301
PACS:
98.80.Cq, 98.62.En