论膨胀磁场及其反作用
On inflating magnetic fields, and the backreactions thereof
摘要：
我们更深入地研究了在暴胀时产生宇宙学磁场的模型中的反作用问题。通过选择不同的、由物理驱动的参数化，我们能够分离出问题的核心，也就是说，除了所需的磁场之外，还存在着它的电对应物，后者通常更强、更红。我们还能够以一种独立于暴胀和电磁之间耦合的规范的方式，识别出更多交织在一起的弱点（通常非常高的暴胀尺度，暴胀处理的模式谱的宽度，放大机制对处理的能量尺度的盲目性）。尽管已经将问题剥离到核心，但遇到的障碍似乎无法克服，从而对作为宇宙磁性孵化器的暴胀提出了挑战。
英文摘要：
We investigate in more depth the issue of backreaction in models that attempt at generating cosmological magnetic fields at inflation. By choosing different, physically motivated, parametrisations, we are able to isolate the core of the problem, namely the existence, alongside the wanted magnetic field, of its electric counterpart, which turns out quite generally to be stronger and redder. We were also able to identify a few more interwoven weak spots (the typically very high scale of inflation, the width of the spectrum of modes processed by inflation, the blindness of the amplification mechanism to the energy scale processed), in a way independent on the specifications of the coupling between inflation and electromagnetism. Despite having stripped down the problem to the core, the obstacles encountered appear insurmountable, thereby posing a challenge to inflation as the incubator of cosmological magnetism.
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。
