Is inflationary magnetogenesis sensitive to the post-inflationary history ?
Abstract
Considering inflationary magnetogenesis induced by time-dependent kinetic and axial couplings of a massless Abelian vector boson field breaking the conformal invariance we show in this article that, surprisingly, the spectral shape of the large-scale primordial magnetic field power spectrum is insensitive to the post-inflationary history, namely the barotropic parameter (w) and the gauge coupling functions of the post-inflationary era.
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