Primordial Magnetic Fields From String Cosmology
高能物理 - 理论
2009-10-28 v1 天体物理学
广义相对论与量子宇宙学
摘要
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.
引用
@article{arxiv.hep-th/9504083,
title = {Primordial Magnetic Fields From String Cosmology},
author = {M. GasperinI and M. Giovannini and G. Veneziano},
journal= {arXiv preprint arXiv:hep-th/9504083},
year = {2009}
}
备注
12 pages, latex, two figures available by fax upon request