Can a marginally open universe amplify magnetic fields?
arXiv:1211.2168 · doi:10.1088/1475-7516/2013/01/008
Abstract
In a series of recent papers, including arXiv:1210.1183, it was claimed that large-scale magnetic fields generated during inflation in a spatially open universe could remain astrophysically significant at the present time since they experienced superadiabatic amplification specific to an open universe. We reexamine this assertion and show that, on the contrary, large-scale magnetic fields in a realistic open universe decay in much the same manner as they would in a spatially flat universe. Consequently, their amplitude today is extremely small (B0 < 10^{-59} G) and is unlikely to be of astrophysical significance.
15 pages, minor clarification added, matches the published version
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Cited by in corpus (8)
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- Origin of Cosmic Magnetic Fields
- Cosmological Magnetogenesis From Extra-dimensional Gauss Bonnet Gravity
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