Numerical simulations of the decay of primordial magnetic turbulence

Details Numerical simulations of the decay of primordial magnetic turbulence Numerical simulations of the decay of primordial magnetic turbulence

2010-04-19

arxiv.org/abs/1004.3084v2

Phys.Rev.D81:123002,2010

Astronomy and Astrophysics

Astrophysics

Cosmology and Extragalactic Astrophysics

10 pages, 6 figures, references added, PRD accepted

Scientific paper

10.1103/PhysRevD.81.123002

We perform direct numerical simulations of forced and freely decaying 3D magnetohydrodynamic turbulence in order to model magnetic field evolution during cosmological phase transitions in the early Universe. Our approach assumes the existence of a magnetic field generated either by a process during inflation or shortly thereafter, or by bubble collisions during a phase transition. We show that the final configuration of the magnetic field depends on the initial conditions, while the velocity field is nearly independent of initial conditions.

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