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

Article Article scientifique Article Testing the origin of cosmological magnetic fields through the large-scale structure consistency relations eng 2014 author Berger Philippe 690231 author Kechagias Alexandros 810141 author Riotto Antonio Walter 650982 025 10.1088/1475-7516/2014/05/025 1475-7516 https://iopscience.iop.org/article/10.1088/1475-7516/2014/05/025 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. Primordial magnetic fields Magnetohydrodynamics Dark matter theory Inflation Dewey 500.2 37 Département de physique théorique 133 false Journal of cosmology and astroparticle physics 05 3b03f5ec-d9c6-4ce9-bd40-34beb8f2775c Article (Published version) Restricted Riotto2.pdf 298946 application/pdf restrictedAccess Faculté des sciences / Section de physique / Département de physique théorique

Title	Published in	Access level	OA Policy	Year	Views	Downloads

Testing the origin of cosmological magnetic fields through the large-scale structure consistency relations	Journal of cosmology and astroparticle physics			2014	663	0

Archive ouverte UNIGE

Berger, Philippe