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

被引：6
|
作者：
Berger, P. [1 ,2 ]
Kehagias, A. [1 ,2 ,3 ]
Riotto, A. [1 ,2 ]
机构：
[1] Univ Geneva, Dept Theoret Phys, CH-1211 Geneva 4, Switzerland
[2] Univ Geneva, Ctr Astroparticle Phys, CH-1211 Geneva 4, Switzerland
[3] Natl Tech Univ Athens, Div Phys, Athens 15780, Greece
来源：
JOURNAL OF COSMOLOGY AND ASTROPARTICLE PHYSICS | 2014年 / 05期
基金：
瑞士国家科学基金会;
关键词：
primordial magnetic fields; Magnetohydrodynamies; dark matter theory; inflation; OPERATOR PRODUCT EXPANSION; SYMMETRIES; INFLATION;
D O I：
10.1088/1475-7516/2014/05/025
中图分类号：
P1 [天文学];
学科分类号：
0704 ;
摘要：
We study the symmetries of the post-recombination cosmological magnetohydrodynamical equations which describe the evolution of (lark matter, baryons and magnetic fields in a self-consistent way. This is clone 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.
引用
收藏
页数：20
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