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arXiv 0710.4620astro-ph
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早期宇宙的电磁性质

Electromagnetic Properties of the Early Universe

Keitaro Takahashi, Kiyotomo Ichiki, Naoshi Sugiyama

摘要:

详细的物理过程的磁场产生的密度涨落在预复合时代的研究。通过求解麦克斯韦方程组和广义欧姆定律,得到了在电场作用下,净电荷密度、电流和电磁场的演化规律。与以往的工作不同,我们在紧耦合的假设下,将电子和光子作为独立的组分来处理。我们发现,产生的磁场,由于密度涨落只发生从两个微扰理论和紧耦合近似的第二阶。

英文摘要:

Detailed physical processes of magnetic field generation from density fluctuations in the pre-recombination era are studied. Solving Maxwell equations and the generalized Ohm's law, the evolutions of the net charge density, the electric current and the electromagnetic field are solved. Unlike most of previous works, we treat electrons and photons as separate components under the assumption of tight coupling. We find that generation of the magnetic field due to density fluctuations takes place only from the second order of both perturbation theory and the tight coupling approximation.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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