Scale-invariant Helical Magnetic Fields from Inflation

Abstract

We discuss a model which can generate scale-invariant helical magnetic fields on large scales ($\lesssim 1$Mpc) in the primordial universe. It is also shown that the electric conductivity becomes significant and terminates magnetogenesis even before reheating is completed. By solving the electromagnetic dynamics taking conductivity into account, we find that magnetic fields with amplitude $B\simeq 10^{-15}\mathrm{G}$ at present can be generated without encountering a backreaction or strong coupling problem.

24 pages, 6 figures

References in corpus (20)

• The Chiral Magnetic Effect
• Strong magnetic fields in normal galaxies at high redshifts
• Lower limit on the strength and filling factor of extragalactic magnetic fields
• Generation of Large-Scale Magnetic Fields in Single-Field Inflation
• Magnetic fields from inflation?
• N-flationary magnetic fields
• Adding helicity to inflationary magnetogenesis
• Evolution of Primordial Magnetic Fields from Phase Transitions
• Schwinger Effect in 4D de Sitter Space and Constraints on Magnetogenesis in the Early Universe
• Consistent generation of magnetic fields in axion inflation models
• Baryogenesis from Decaying Magnetic Helicity
• Evolution of the Baryon Asymmetry through the Electroweak Crossover in the Presence of a Helical Magnetic Field
• Baryon Asymmetry and Gravitational Waves from Pseudoscalar Inflation
• Universal upper limit on inflation energy scale from cosmic magnetic field
• The turbulent chiral-magnetic cascade in the early universe
• Gamma-ray observations of blazars and the intergalactic magnetic field spectrum
• Can the observed large scale magnetic fields be seeded by helical primordial fields?
• Early Cosmological Evolution of Primordial Electromagnetic Fields
• Intergalactic magnetic field spectra from diffuse gamma rays
• Vacuum birefringence and the Schwinger effect in (3+1) de Sitter

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• Gravitational Waves from Primordial Magnetic Fields via Photon-Graviton Conversion
• Constraining the primordial magnetic field with dwarf galaxy simulations
• Chiral Gravitational Waves Produced in a Helical Magnetogenesis Model
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• Generation of Primordial Black Holes and Gravitational Waves from Dilaton-Gauge Field Dynamics
• Resonant magnetogenesis from axions
• Revisiting Magnetogenesis during Inflation
• New constraints on axion-gauge field dynamics during inflation from $Planck$ and BICEP/Keck data sets
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• Model-independent constraints in inflationary magnetogenesis
• Generation of chiral asymmetry via helical magnetic fields
• Primordial Magnetogenesis in a Bouncing Universe
• Gravitational wave trispectrum in the axion-SU(2) model
• Simulating relic gravitational waves from inflationary magnetogenesis
• Dwarf galaxies as a probe of a primordially magnetized Universe
• Universality of linear perturbations in SU($N$)-natural inflation
• Probing the primordial Universe with 21-cm line from cosmic dawn/epoch of reionization
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• Constraining models of Inflationary Magnetogenesis with NANOGrav
• Geometric structure of multi-form-field isotropic inflation and primordial fluctuations
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• Inflationary magnetogenesis with a self-consistent coupling function
• Small-scale CMB anisotropies induced by the primordial magnetic fields
• Magnetogenesis from axion-SU(2) inflation
• Abelian Higgs model in power-law inflation: the propagators in the unitary gauge
• Impact of Helical Electromagnetic Fields on the Axion Window
• Gravitational Waves sourced by Gauge Fields during Inflation
• Simulations of helical inflationary magnetogenesis and gravitational waves
• Inflationary magnetogenesis of primordial magnetic fields with multiple vector fields
• The Impact of Inhomogeneous Perturbations of the Inflaton on the Cosmological Primordial Magnetic Field
• When does the Schwinger Preheating Occur?