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Mode spectrum of the electromagnetic field in open universe models

Adamek, Julian ; de Rham, Claudia ; Durrer, Ruth

In: Monthly Notices of the Royal Astronomical Society, 2012, vol. 423, no. 3, p. 2705-2710

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    Titel
    • Mode spectrum of the electromagnetic field in open universe models
    Autor
    • Adamek, Julian. Institut für Theoretische Physik und Astrophysik, Julius-Maximilians-Universität Würzburg, Emil-Fischer-Str. 31, 97074 Würzburg, Germany
    • de Rham, Claudia. Département de Physique Théorique & Center for Astroparticle Physics, Université de Genève, 24 Quai Ernest Ansermet, 1211 Genève 4, Switzerland
    • Durrer, Ruth. Département de Physique Théorique & Center for Astroparticle Physics, Université de Genève, 24 Quai Ernest Ansermet, 1211 Genève 4, Switzerland
    Dokumententyp
    • Postprint
    Sprache
    • Englisch
    Veröffentlicht in
    • Monthly Notices of the Royal Astronomical Society, 2012, vol. 423, no. 3, p. 2705-2710. Blackwell Publishing Ltd
    Andere elektronische Ausgabe
    OAI-PMH-ID
    • oai:doc.rero.ch:296389
    Summary
    We examine the mode functions of the electromagnetic field on spherically symmetric backgrounds with special attention to the subclass which allows for a foliation as open Friedmann-Lemaître (FL) space-time. It is well known that in certain scalar field theories on open FL background there can exist so-called supercurvature modes, their existence depending on parameters of the theory. Looking at specific open universe models, such as open inflation and the Milne universe, we find that no supercurvature modes are present in the spectrum of the electromagnetic field. This excludes the possibility for superadiabatic evolution of cosmological magnetic fields within these models without relying on new physics or breaking the conformal invariance of electromagnetism