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arXiv · hep-th/9504083

Primordial Magnetic Fields From String Cosmology

M. GasperinI·M. Giovannini·G. Veneziano
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Abstract

Sufficiently large seeds for generating the observed (inter)galactic magnetic fields emerge naturally in string cosmology from the amplification of electromagnetic vacuum fluctuations due to a dynamical dilaton background. The success of the mechanism depends crucially on two features of the so-called pre-big-bang scenario, an early epoch of dilaton-driven inflation at very small coupling, and a sufficiently long intermediate stringy era preceding the standard radiation-dominated evolution.

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M. GasperinI, M. Giovannini, G. Veneziano. 1995-04-17. Primordial Magnetic Fields From String Cosmology. https://doi.org/10.1103/physrevlett.75.3796

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