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Primordial Magnetic Fields From String Cosmology

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arxiv hep-th/9504083 v1 pith:YBTWRICB submitted 1995-04-17 hep-th astro-phgr-qc

M. GasperinI , M. Giovannini , G. Veneziano This is my paper · ORCID
classification hep-thastro-phgr-qc
keywords cosmologyfieldsmagneticstringsufficientlyamplificationbackgroundcoupling
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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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Cited by 2 Pith papers

Reviewed papers in the Pith corpus that reference this work. Sorted by Pith novelty score. Full citation record

  1. The art of simulating the early Universe. Part III: Scalar-Gauge-Fluid Dynamics

    astro-ph.CO 2026-07 accept novelty 5.0 of 10

    Detailed continuum-to-lattice schemes are given for perfect/imperfect fluids alone or coupled to scalars/gauges in FLRW, enabling self-consistent CosmoLattice simulations of early-Universe plasma dynamics and GWs.

  2. Axion-Photon Conversion in FLRW with Primordial Magnetic Fields: Explaining the Radio Excess

    astro-ph.CO 2025-09 conditional novelty 4.0 of 10

    Resonant conversion of axion-like particles into photons in nanogauss primordial magnetic fields is claimed to explain both the ARCADE2 radio excess and the EDGES 21-cm trough for axion masses near 10^-14 to 10^-12 eV.

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