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arXiv 2004.00947astro-ph.COgr-qchep-ph
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暴胀磁生作用中的模型无关约束

Model-independent constraints in inflationary magnetogenesis

Yuri Shtanov, Mykhailo Pavliuk

摘要:

考虑到弱耦合、反作用和Schwinger效应等条件的限制,我们导出了一个简单的与模型无关的暴胀和暴胀后磁生作用中磁场强度的上界.对于宇宙学上有趣的空间尺度来说,这个界限相当低。如果假设在早期宇宙中有某种未知的机制抑制了Schwinger效应,则得到了更高的上界。顺便说一下,我们修正了我们以前对这种情况的估计。

英文摘要:

We derive a simple model-independent upper bound on the strength of magnetic fields obtained in inflationary and post-inflationary magnetogenesis taking into account the constraints imposed by the condition of weak coupling, back-reaction and Schwinger effect. This bound turns out to be rather low for cosmologically interesting spatial scales. Somewhat higher upper bound is obtained if one assumes that some unknown mechanism suppresses the Schwinger effect in the early universe. Incidentally, we correct our previous estimates for this case.

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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