Generation of Cosmological Seed Magnetic Fields from Inflation with Cutoff

Simple item page
dc.creatorAshoorioon, Amjad
dc.creatorMann, Robert B.
dc.date2004-10-12
dc.date2005-05-16
dc.date.accessioned2026-07-07T03:29:03Z
dc.date.available2026-07-07T03:29:03Z
dc.descriptionInflation has the potential to seed the galactic magnetic fields observed today. However, there is an obstacle to the amplification of the quantum fluctuations of the electromagnetic field during inflation: namely the conformal invariance of electromagnetic theory on a conformally flat underlying geometry. As the existence of a preferred minimal length breaks the conformal invariance of the background geometry, it is plausible that this effect could generate some electromagnetic field amplification. We show that this scenario is equivalent to endowing the photon with a large negative mass during inflation. This effective mass is negligibly small in a radiation and matter dominated universe. Depending on the value of the free parameter of the theory, we show that the seed required by the dynamo mechanism can be generated. We also show that this mechanism can produce the requisite galactic magnetic field without resorting to a dynamo mechanism.
dc.descriptionLatex, 16 pages, 2 figures, 4 references added, minor corrections; v4: more references added, boundary term written in a covariant form, discussion regarding other gauge fields added, submitted to PRD; v5: matched with the published version
dc.identifierhttps://arxiv.org/abs/gr-qc/0410053
dc.identifierhttp://arxiv.org/abs/gr-qc/0410053
dc.identifierPhys.Rev. D71 (2005) 103509
dc.identifierdoi:10.1103/PhysRevD.71.103509
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/35067
dc.subjectGeneral Relativity and Quantum Cosmology
dc.subjectAstrophysics
dc.subjectHigh Energy Physics - Theory
dc.titleGeneration of Cosmological Seed Magnetic Fields from Inflation with Cutoff
dc.typetext

Files

Collections

arXiv