Magnetogenesis and the dynamics of internal dimensions

Details Magnetogenesis and the dynamics of internal dimensions Magnetogenesis and the dynamics of internal dimensions

2000-07-15

arxiv.org/abs/hep-ph/0007163v1

Phys.Rev. D62 (2000) 123505

Physics

High Energy Physics

High Energy Physics - Phenomenology

27 in RevTex style, four figures

Scientific paper

10.1103/PhysRevD.62.123505

The dynamical evolution of internal space-like dimensions breaks the invariance of the Maxwell's equations under Weyl rescaling of the (conformally flat) four-dimensional metric. Depending upon the number and upon the dynamics of internal dimensions large scale magnetic fields can be created. The requirements coming from magnetogenesis together with the other cosmological constraints are examined under the assumption that the internal dimensions either grow or shrink (in conformal time) prior to a radiation dominated epoch. If the internal dimensions are growing the magnitude of the generated magnetic fields can seed the galactic dynamo mechanism.

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