Phase Transition Generated Cosmological Magnetic Field at Large Scales

Abstract

We constrain a primordial magnetic field (PMF) generated during a phase transition (PT) using the big bang nucleosynthesis bound on the relativistic energy density. The amplitude of the PMF at large scales is determined by the shape of the PMF spectrum outside its maximal correlation length scale. Even if the amplitude of the PMF at 1 Mpc is small, PT-generated PMFs can leave observable signatures in the potentially detectable relic gravitational wave background if a large enough fraction ($1-10$) of the thermal energy is converted into the PMF.

18 pages, 4 figures, Discussions expanded, references added, ApJ accepted version

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Cited by in corpus (41)

• Extreme TeV blazars and the intergalactic magnetic field
• Magnetogenesis from axion inflation
• The Gravitational-Wave Physics
• Numerical Simulations of Gravitational Waves from Early-Universe Turbulence
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• Magnetic Field Amplification in Galaxy Clusters and its Simulation
• Updated predictions for gravitational waves produced in a strongly supercooled phase transition
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• Magnetic Fields from QCD Phase Transitions
• Constraints on Primordial Magnetic Fields from Planck combined with the South Pole Telescope CMB B-mode polarization measurements
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• Cosmological magnetic fields from inflation in extended electromagnetism
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• Polarization of gravitational waves from helical MHD turbulent sources
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• Generation of large-scale magnetic fields from inflation in teleparallelism
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• Detecting circular polarisation in the stochastic gravitational-wave background from a first-order cosmological phase transition
• Magnetogenesis with gravitational waves and primordial black hole dark matter
• Extragalactic magnetic fields unlikely generated at the electroweak phase transition
• Computation approach for CMB bispectrum from primordial magnetic fields
• Fundamental Implications of Intergalactic Magnetic Field Observations
• Reduced bispectrum seeded by helical primordial magnetic fields
• Power spectrum of post-inflationary primordial magnetic fields
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• LISA and $\gamma$-ray telescopes as multi-messenger probes of a first-order cosmological phase transition