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Evolution of inflation-generated magnetic field through phase transitions
KTH, Centres, Nordic Institute for Theoretical Physics NORDITA.ORCID iD: 0000-0002-7304-021X
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2012 (English)In: Physical Review D, ISSN 1550-7998, Vol. 86, no 10, 103005- p.Article in journal (Refereed) Published
Abstract [en]

We study the evolution of an inflation-generated magnetic field, due to its coupling to fluid motions, during cosmological phase transitions. We find that the magnetic field stays almost unchanged on large scales, while on small scales, the spectrum is modified in such a way that power at small scales becomes progressively suppressed. We also show that the magnetic field generates turbulent motions in the initially turbulence-free plasma. On large scales, the slope of the resulting kinetic energy spectrum is consistent with that of white noise.

Place, publisher, year, edition, pages
2012. Vol. 86, no 10, 103005- p.
Keyword [en]
Tev Blazars, Hydromagnetic Turbulence, String Cosmology, Early Universe, 1es 0229+200, Anisotropy, Radiation, Helicity, Scalar, Light
National Category
Physical Sciences
URN: urn:nbn:se:kth:diva-109193DOI: 10.1103/PhysRevD.86.103005ISI: 000310845800003ScopusID: 2-s2.0-84869070294OAI: diva2:582844
Swedish Research Council, 621-2007-4064EU, European Research Council, 227952

QC 20130107

Available from: 2013-01-07 Created: 2012-12-21 Last updated: 2013-08-28Bibliographically approved

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Brandenburg, Axel
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