On the inflationary origin of primordial magnetic fields

Shu Lin Cheng, Wo-Lung Lee

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Abstract

Contrary to the conventional wisdom, we find that it is possible to generate coherent magnetic seed fields over a scale of 10 Mpc effciently via the spinodal instability during primordial inflation, provided that a fast-roll stage is involved before the inflaton enters into the slow-roll phase. However, the primordial magnetic field produced in such a mechanism is far too powerful to consistently fit into the energy constraint required by the scalar field driving the cosmic inflation.

Original languageEnglish
Pages (from-to)1422-1431
Number of pages10
JournalChinese Journal of Physics
Volume52
Issue number5
DOIs
Publication statusPublished - 2014 Jan 1

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ASJC Scopus subject areas

  • Physics and Astronomy(all)

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