Gradient expansion formalism for magnetogenesis in the kinetic coupling model

In order to describe magnetogenesis during inflation in the kinetic coupling model, we utilize a gradient expansion which is based on the fact that only long-wavelength (superhorizon) modes undergo amplification. For this purpose, we introduce a set of functions (bilinear combinations of electromagn...

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Veröffentlicht in:	Physical review. D 2020-12, Vol.102 (12), Article 123512
Hauptverfasser:	Sobol, O. O., Lysenko, A. V., Gorbar, E. V., Vilchinskii, S. I.
Format:	Artikel
Sprache:	eng
Schlagworte:	Chains Coupling Electromagnetic fields Mathematical models
Online-Zugang:	Volltext
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