Nearly Minimal Magnetogenesis

Abstract

We propose a new mechanism for magnetic field generation from inflation, by which strong magnetic fields can be generated on cosmological scales. These fields may be observable by cosmic microwave background radition measurements, and may have a dynamical impact on structure formation. The mechanism is based on the observation that a light nearly minimally coupled charged scalar may be responsible for the creation of a negative photon mass-squared (provided the scalar field coupling to the curvature scalar is small but negative), which in turn results in abundant photon production - and thus in growing magnetic fields - during inflation.

11 pages, 3 eps figures

References in corpus (12)

• Origin of Galactic and Extragalactic Magnetic Fields
• Cluster Magnetic Fields
• Tensor Microwave Anisotropies from a Stochastic Magnetic Field
• Photon mass from inflation
• One Loop Vaccum Polarization in a Locally de Sitter Background
• Primordial Spectrum of Gauge Fields from Inflation
• Natural Magnetogenesis from Inflation
• From hard thermal loops to Langevin dynamics
• Dynamics of super-horizon photons during inflation with vacuum polarization
• Vacuum polarization and photon mass in inflation
• Photon mass generation during inflation: de Sitter invariant case
• A lower bound on the local extragalactic magnetic field

Cited by in corpus (34)

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• Generation of Cosmological Seed Magnetic Fields from Inflation with Cutoff
• A Model of Universe Anisotropization
• Fermion Mass Generation in de Sitter Space
• Non-Gaussianity from Cosmic Magnetic Fields
• Perturbative Quantum Gravity Comes of Age
• Helical Magnetic Fields from Inflation
• Quantum radiative corrections to slow-roll inflation
• Inflation-Produced Magnetic Fields in Nonlinear Electrodynamics
• Inflation-Produced Magnetic Fields in R^n F^2 and I F^2 models
• Excitation of Photons by Inflationary Gravitons
• Inflation from Charged Scalar and Primordial Magnetic Fields?
• Cosmic Magnetism in Centimeter and Meter Wavelength Radio Astronomy
• Statistical Anisotropy from Vector Curvaton in D-brane Inflation
• Constraint on the primordial vector mode and its magnetic field generation from seven-year Wilkinson Microwave Anisotropy Probe Observations
• Symmetry breaking and the Goldstone theorem in de Sitter space
• Maxwell-Kostelecký Electromagnetism and Cosmic Magnetization
• The cosmology of the nonsymmetric theory of gravitation
• Evolution of primordial magnetic fields in mean-field approximation
• One loop graviton corrections to dynamical photons in de Sitter
• Intrinsic Bispectra of Cosmic Magnetic Fields
• Ultraviolet Regularisation in de Sitter Space
• Perturbations and non-Gaussianities in three-form inflationary magnetogenesis
• Superhorizon magnetic fields
• Effects of non-linearities on magnetic field generation
• Correlated curvature perturbations and magnetogenesis from the GUT gauge bosons
• Abelian Higgs model in power-law inflation: the propagators in the unitary gauge
• Production of photons in a bouncing universe
• A photon propagator on de Sitter in covariant gauges
• Bounce and wormholes