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Scientific article
English

Testing the origin of cosmological magnetic fields through the large-scale structure consistency relations

Published inJournal of cosmology and astroparticle physics, vol. 052014, no. 025
Publication date2014
Abstract

We study the symmetries of the post-recombination cosmological magnetohydrodynamical equations which describe the evolution of dark matter, baryons and magnetic fields in a self-consistent way. This is done both at the level of fluid equations and of Vlasov-Poisson-Maxwell equations in phase space. We discuss some consistency relations for the soft limit of the (n+1)-correlator functions involving magnetic fields and matter overdensities. In particular, we stress that any violation of such consistency relations at equal-time would point towards an inflationary origin of the magnetic field.

Keywords
  • Primordial magnetic fields
  • Magnetohydrodynamics
  • Dark matter theory
  • Inflation
Citation (ISO format)
BERGER, Philippe, KECHAGIAS, Alexandros, RIOTTO, Antonio Walter. Testing the origin of cosmological magnetic fields through the large-scale structure consistency relations. In: Journal of cosmology and astroparticle physics, 2014, vol. 052014, n° 025. doi: 10.1088/1475-7516/2014/05/025
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Identifiers
ISSN of the journal1475-7516
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Creation10/03/2014 2:15:00 PM
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