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Magnetic fields from inflation?
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abstract
We consider the possibility of generation of the seeds of primordial magnetic field on inflation and show that the effect of the back reaction of this field can be very important. Assuming that back reaction does not spoil inflation we find a rather strong restriction on the amplitude of the primordial seeds which could be generated on inflation. Namely, this amplitude recalculated to the present epoch cannot exceed $10^{-32}G$ in $Mpc$ scales. This field seems to be too small to be amplified to the observable values by galactic dynamo mechanism.
Forward citations
Cited by 13 Pith papers
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Coupling dark photons to standard photons enables adequate primordial magnetogenesis without strong-coupling or backreaction issues.
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Multi-phase inflation with chiral vector interactions generates amplified primordial magnetic fields that induce a detectable circularly polarized gravitational-wave background.
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Inflationary trispectrum of gauge fields from scalar and tensor exchanges
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Symbiotic Magnetogenesis during Radiation Domination
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Massless limit of massive self-interacting vector fields
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Influence of the Vacuum Polarization Effect on the Motion of Charged Particles in the Magnetic Field around a Schwarzschild Black Hole
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