Evolution of hydromagnetic turbulence from the electroweak phase transition
arXiv:1711.03804 · doi:10.1103/PhysRevD.96.123528
Abstract
We present new simulations of decaying hydromagnetic turbulence for a relativistic equation of state relevant to the early universe. We compare helical and nonhelical cases either with kinetically or magnetically dominated initial fields. Both kinetic and magnetic initial helicities lead to maximally helical magnetic fields after some time, but with different temporal decay laws. Both are relevant to the early universe, although no mechanisms have yet been identified that produce magnetic helicity with strengths comparable to the big bang nucleosynthesis limit at scales comparable to the Hubble horizon at the electroweak phase transition. Nonhelical magnetically dominated fields could still produce picoGauss magnetic fields under most optimistic conditions. Only helical magnetic fields can potentially have nanoGauss strengths at scales up to 30 kpc today.
17 pages, 13 figures; submitted to PRD
References in corpus (16)
- On the Origin of Cosmic Magnetic Fields
- Nonhelical inverse transfer of a decaying turbulent magnetic field
- Evolution of Primordial Magnetic Fields from Phase Transitions
- Classes of hydrodynamic and magnetohydrodynamic turbulent decay
- Magnetic field production during preheating at the electroweak scale
- Baryogenesis from Decaying Magnetic Helicity
- Cosmological Phase Transitions and their Properties in the NMSSM
- Evolution of the Baryon Asymmetry through the Electroweak Crossover in the Presence of a Helical Magnetic Field
- Nonlinear current helicity fluxes in turbulent dynamos and alpha quenching
- Magnetic Fields from QCD Phase Transitions
- The turbulent chiral-magnetic cascade in the early universe
- Helical Magnetic Fields from Sphaleron Decay and Baryogenesis
- Numerical simulations of the decay of primordial magnetic turbulence
- Nonhelical turbulence and the inverse transfer of energy: A parameter study
- Role of Charged Gauge Fields in Generating Magnetic Seed Fields in Bubble Collisions during the Cosmological Electroweak Phase Transition
- Fundamental Implications of Intergalactic Magnetic Field Observations
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- Hall cascade with fractional magnetic helicity in neutron star crusts
- Primordial magnetic helicity evolution with a homogeneous magnetic field from inflation
- Evolution of axions in the presence of primordial magnetic fields
- Simulating relic gravitational waves from inflationary magnetogenesis
- On the measurement of handedness in Fermi Large Area Telescope data
- Cross-helically forced and decaying hydromagnetic turbulence
- The Discovery Potential of Space-Based Gravitational Wave Astronomy