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Slow decay of magnetic fields in open Friedmann universes

¹DAMTP, Centre for Mathematical Sciences, University of Cambridge, Wilberforce Road, Cambridge CB3 0WA, UK
²Section of Astrophysics, Astronomy and Mechanics, Department of Physics, Aristotle University of Thessaloniki, Thessaloniki 54124, Greece

Phys. Rev. D 77, 107302 – Published 14 May, 2008Erratum Phys. Rev. D 77, 109904 (2008)

DOI: https://doi.org/10.1103/PhysRevD.77.107302

Abstract

Magnetic fields in Friedmann universes can experience superadiabatic growth without departing from conventional electromagnetism. The reason is the relativistic coupling between vector fields and spacetime geometry, which slows down the decay of large-scale magnetic fields in open universes, compared to that seen in perfectly flat models. The result is a large relative gain in magnetic strength that can lead to astrophysically interesting $B$ fields, even if our Universe is only marginally open today.

Corrections

16 May, 2008

Erratum

Publisher’s Note: Slow decay of magnetic fields in open Friedmann universes [Phys. Rev. D 77, 107302 (2008)]

John D. Barrow and Christos G. Tsagas

Phys. Rev. D 77, 109904 (2008)

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References (21)

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Slow decay of magnetic fields in open Friedmann universes

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Erratum

Publisher’s Note: Slow decay of magnetic fields in open Friedmann universes [Phys. Rev. D 77, 107302 (2008)]

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References (21)

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