Primordial magnetic fields from metric perturbations

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dc.creatorMaroto, Antonio L.
dc.date2000-08-28
dc.date2001-07-17
dc.date.accessioned2026-07-07T12:02:43Z
dc.date.available2026-07-07T12:02:43Z
dc.descriptionWe study the amplification of electromagnetic vacuum fluctuations induced by the evolution of scalar metric perturbations at the end of inflation. Such perturbations break the conformal invariance of Maxwell equations in Friedmann-Robertson-Walker backgrounds and allow the growth of magnetic fields on super-Hubble scales. We relate the strength of the fields generated by this mechanism with the power spectrum of scalar perturbations and estimate the amplification on galactic scales for different values of the spectral index. Finally we discuss the possible effects of finite conductivity during reheating.
dc.description10 pages, 1 figure. Final version to appear in Phys. Rev. D
dc.identifierhttps://arxiv.org/abs/hep-ph/0008288
dc.identifierhttp://arxiv.org/abs/hep-ph/0008288
dc.identifierPhys.Rev.D64:083006,2001
dc.identifierdoi:10.1103/PhysRevD.64.083006
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/207532
dc.subjectHigh Energy Physics - Phenomenology
dc.subjectAstrophysics
dc.subjectGeneral Relativity and Quantum Cosmology
dc.titlePrimordial magnetic fields from metric perturbations
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