Leptogenesis and Primordial Magnetic Fields

Abstract

The anomalous conversion of leptons into baryons during leptogenesis is shown to produce a right-handed helical magnetic field; in contrast, the magnetic field produced during electroweak baryogenesis is known to be left-handed. If the cosmological medium is turbulent, the magnetic field evolves to have a present day coherence scale and field strength that are of astrophysical interest. Observations of the amplitude, coherence scale, and helicity of the intergalactic magnetic field promise to provide a powerful probe of physics beyond the Standard Model and the very early universe.

v2: 21 pages, no figures; expanded JCAP version

References in corpus (15)

• Planck 2013 results. XVI. Cosmological parameters
• Leptogenesis
• Cosmological Magnetic Fields: Their Generation, Evolution and Observation
• Lower limit on the strength and filling factor of extragalactic magnetic fields
• Darkogenesis
• Evolution of Primordial Magnetic Fields from Phase Transitions
• Search for CP Violating Signature of Intergalactic Magnetic Helicity in the Gamma Ray Sky
• Long-range magnetic fields in the ground state of the Standard Model plasma
• The Sphaleron Rate through the Electroweak Cross-over
• Helical Magnetic Fields from Sphaleron Decay and Baryogenesis
• Lepton asymmetry growth in the symmetric phase of an electroweak plasma with hypermagnetic fields versus its washing out by sphalerons
• Evolution of Helical Cosmic Magnetic Fields as Predicted by Magnetohydrodynamic Closure Theory
• Cosmological magnetic field correlators from blazar induced cascade
• Does the CMB prefer a leptonic Universe?
• Hypermagnetic helicity evolution in early universe: leptogenesis and hypermagnetic diffusion

Cited by in corpus (45)

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• Baryogenesis from Decaying Magnetic Helicity
• Evolution of hydromagnetic turbulence from the electroweak phase transition
• Large-scale magnetic fields can explain the baryon asymmetry of the Universe
• Hypermagnetic Fields and Baryon Asymmetry from Pseudoscalar Inflation
• Evolution of the Baryon Asymmetry through the Electroweak Crossover in the Presence of a Helical Magnetic Field
• Search for CP Violating Signature of Intergalactic Magnetic Helicity in the Gamma Ray Sky
• The Gamma-Ray Window to Intergalactic Magnetism
• Future CMB constraints on cosmic birefringence and implications for fundamental physics
• Anomalous non-conservation of fermion/chiral number in Abelian gauge theories at finite temperature
• Circular Polarization of Gravitational Waves from Early-Universe Helical Turbulence
• Lattice implementation of Abelian gauge theories with Chern-Simons number and an axion field
• Implications of a Primordial Magnetic Field for Magnetic Monopoles, Axions, and Dirac Neutrinos
• Probing Intergalactic Magnetic Fields with Simulations of Electromagnetic Cascades
• The role of temperature dependent string-inspired CPT violating backgrounds in leptogenesis and the chiral magnetic effect
• Magnetic field production at a first-order electroweak phase transition
• Scale-invariant helical magnetic field evolution and the duration of inflation
• Searching for parity violation with the LIGO-Virgo-KAGRA network
• Parity-odd correlators of diffuse gamma rays and intergalactic magnetic fields
• Searching for Primordial Magnetic Fields with CMB B-modes
• Generation of large-scale magnetic fields, non-Gaussianity, and primordial gravitational waves in inflationary cosmology
• Generation of hypermagnetic helicity and leptogenesis in early universe
• Morphology of blazar-induced gamma ray halos due to a helical intergalactic magnetic field
• Asymmetric Dark Matter and Baryogenesis from Pseudoscalar Inflation
• Chiral Charge Erasure via Thermal Fluctuations of Magnetic Helicity
• On the Contributions to the ${\mathbf{U}}_{\mathbf{Y}}(1)$ Chern-Simons Term and the Evolution of Fermionic Asymmetries and Hypermagnetic Fields
• Chiral Gravitational Waves from Chiral Fermions
• The effects of the U${}_{\text{Y}}$(1) Chern-Simons term and its baryonic contribution on matter asymmetries and hypermagnetic fields
• Chiral magnetohydrodynamics with zero total chirality
• Helical magnetic fields from Riemann coupling lead to baryogenesis
• 21cm fluctuations from primordial magnetic fields
• A Minimal System Including Weak Sphalerons for Investigating the Evolution of Matter Asymmetries and Hypermagnetic Fields
• Contribution of the chiral vortical effect to the evolution of the hypermagnetic field and the matter-antimatter asymmetry in the early Universe
• Freeze-in and freeze-out generation of lepton asymmetries after baryogenesis in the $\nu$MSM
• Primordial Magnetic Helicity from Stochastic Electric Currents
• Flavon Magneto-Baryogenesis
• The generation of matter-antimatter asymmetries and hypermagnetic fields by the chiral vortical effect of transient fluctuations
• The effects of non-helical component of hypermagnetic field on the evolution of the matter-antimatter asymmetry, vorticity, and hypermagnetic field
• Constraining brane inflationary magnetic field from cosmoparticle physics after Planck
• Particle temperature and the Chiral Vortical Effect in the early universe
• Magnetogenesis From Baryon Asymmetry During an Early Matter Dominated Era
• Braneworld Baryogenesis and QCD-Era Magnetogenesis: A Predictive Link
• Thermal enhancement of inflationary magnetic fields
• Thermal leptogenesis in the presence of helical hypermagnetic fields