Natural Magnetogenesis from Inflation

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dc.creatorDimopoulos, K.
dc.creatorProkopec, T.
dc.creatorTornkvist, O.
dc.creatorDavis, A. C.
dc.date2001-08-06
dc.date.accessioned2026-07-07T10:51:19Z
dc.date.available2026-07-07T10:51:19Z
dc.descriptionWe consider the gravitational generation of the massive Z-boson field of the standard model, due to the natural breaking of its conformal invariance during inflation. The electroweak symmetry restoration at the end of inflation turns the almost scale-invariant superhorizon Z-spectrum into a hypermagnetic field, which transforms into a regular magnetic field at the electroweak phase transition. The mechanism is generic and is shown to generate a superhorizon spectrum of the form B~1/L on a length-scale L regardless of the choice of inflationary model. Scaled to the epoch of galaxy formation such a field suffices to trigger the galactic dynamo and explain the observed galactic magnetic fields in the case of a spatially flat, dark energy dominated Universe with GUT-scale inflation. The possibility of further amplification of the generated field by preheating is also investigated. To this end we study a model of Supersymmetric Hybrid Inflation with a Flipped SU(5) grand unified symmetry group.
dc.description35 pages, 2 figures
dc.identifierhttps://arxiv.org/abs/astro-ph/0108093
dc.identifierhttp://arxiv.org/abs/astro-ph/0108093
dc.identifierPhys.Rev.D65:063505,2002
dc.identifierdoi:10.1103/PhysRevD.65.063505
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/184783
dc.subjectAstrophysics
dc.subjectHigh Energy Physics - Phenomenology
dc.titleNatural Magnetogenesis from Inflation
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