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Evolution of inflation-generated magnetic field through phase transitions
Stockholm University, Faculty of Science, Department of Astronomy. Stockholm University, Nordic Institute for Theoretical Physics (Nordita).
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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.
National Category
Astronomy, Astrophysics and Cosmology
URN: urn:nbn:se:su:diva-84783DOI: 10.1103/PhysRevD.86.103005ISI: 000310845800003OAI: diva2:581961


Available from: 2013-01-03 Created: 2013-01-02 Last updated: 2013-01-03Bibliographically approved

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Brandenburg, Axel
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Department of AstronomyNordic Institute for Theoretical Physics (Nordita)
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