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Primordial large-scale electromagnetic fields from gravitoelectromagnetic inflation

Authors:	Federico Agustín Membiela Mauricio Bellini

Institution:	1. Departamento de Física, Facultad de Ciencias Exactas y Naturales, Universidad Nacional de Mar del Plata, Funes 3350, (7600) Mar del Plata, Argentina;2. Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET), Argentina

Abstract:	We investigate the origin and evolution of primordial electric and magnetic fields in the early universe, when the expansion is governed by a cosmological constant Λ₀ $Λ_{0}$ . Using the gravitoelectromagnetic inflationary formalism with A₀=0 $A_{0} = 0$ , we obtain the power of spectrums for large-scale magnetic fields and the inflaton field fluctuations during inflation. A very important fact is that our formalism is naturally non-conformally invariant.

Keywords:	Extra dimensions Variable cosmological parameter Inflationary cosmology Large-scale magnetic fields
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