论文标题
曲率耦合螺旋磁化方案的可行要求
Viable requirements of curvature coupling helical magnetogenesis scenario
论文作者
论文摘要
在目前的工作中，我们在最近提出的曲率耦合的螺旋磁化场景\ cite \ cite {bamba：2021wyx}的背景下检查以下几点 - （1）模型是否与扰动量子场理论（qft）的扰动量子磁场理论（qft）和（2）在曲率启用时是否相一致，以及（2）在弯曲范围内是否在流向时（2）在变化时是否是一致的。 数据。这样的要求是充分动机的，以争论所考虑的磁化模型的可行性。实际上，在\ cite {bamba：2021wyx}中提出的磁化方案似乎可以预测大尺度上足够的磁强度，并且导致宇宙的正确重子不对称，以适合模型参数的合适范围。但是，在通货膨胀磁化的领域中，这些要求还不足以争论该模型的可行性，尤其是人们需要检查这方面的一些更重要的要求。我们可能会记得，通常用于确定磁场功率谱的计算基于扰动QFT-因此，检查这种扰动QFT的预测是否与模型参数的观察界界一致，这一点很重要。另一方面，生成的量规场充当曲率扰动的来源，与从充气场的贡献相比，需要抑制曲率扰动，以便与Planck观察一致。这些设定了我们的动力。有趣的是，在曲率耦合螺旋磁化方案的背景下，这两种要求都可以同时满足模型参数的范围，从而导致大规模模式上的正确磁强度。
In the present work, we examine the following points in the context of the recently proposed curvature coupling helical magnetogenesis scenario \cite{Bamba:2021wyx} -- (1) whether the model is consistent with the predictions of perturbative quantum field theory (QFT), and (2) whether the curvature perturbation induced by the generated electromagnetic (EM) field during inflation is consistent with the Planck data. Such requirements are well motivated in order to argue the viability of the magnetogenesis model under consideration. Actually, the magnetogenesis scenario proposed in \cite{Bamba:2021wyx} seems to predict sufficient magnetic strength over the large scales and also leads to the correct baryon asymmetry of the universe for a suitable range of the model parameter. However in the realm of inflationary magnetogenesis, these requirements are not enough to argue the viability of the model, particularly one needs to examine some more important requirements in this regard. We may recall that the calculations generally used to determine the magnetic field's power spectrum are based on the perturbative QFT -- therefore it is important to examine whether the predictions of such perturbative QFT are consistent with the observational bounds of the model parameter. On other hand, the generated gauge field acts as a source of the curvature perturbation which needs to be suppressed compared to that of contributed from the inflaton field in order to be consistent with the Planck observation. These set our motivation. Interestingly, both the aforementioned requirements in the context of the curvature coupling helical magnetogenesis scenario are found to be simultaneously satisfied by that range of the model parameter which leads to the correct magnetic strength over the large scale modes.
