Cosmological magnetic fields induced by metric perturbations after inflation

Details Cosmological magnetic fields induced by metric perturbations after inflation Cosmological magnetic fields induced by metric perturbations after inflation

2001-11-21

arxiv.org/abs/hep-ph/0111268v1

Physics

High Energy Physics

High Energy Physics - Phenomenology

8 pages, 1 figure. Presented at COSMO-01 conference, Rovaniemi, Finland, August 29-September 4, 2001

Scientific paper

We consider the amplification of electromagnetic quantum vacuum fluctuations induced by the presence of metric perturbations at the end of inflation. We obtain the amplitude of the corresponding magnetic fields on super-Hubble scales and compare it with the requirements of the galactic dynamo mechanism for different values of the spectral index. Finally we discuss the possible effects of the dissipation of such fields in the form of gravitational waves.

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