Return of the grand unified theory baryogenesis: Source of helical hypermagnetic fields for the baryon asymmetry of the universe

Abstract

It has been considered that baryogenesis models without a generation of $B$-$L$ asymmetry such as the GUT baryogenesis do not work since the asymmetry is washed out by the electroweak sphalerons. Here, we point out that helical hypermagnetic fields can be generated through the chiral magnetic effect with a chiral asymmetry generated in such baryogenesis models. The helical hypermagnetic fields then produce baryon asymmetry mainly at the electroweak symmetry breaking, which remains until today. Therefore, the baryogenesis models without $B$-$L$ asymmetry can still be the origin of the present baryon asymmetry. In particular, if it can produce chiral asymmetry mainly carried by right-handed electrons of order of $10^{-3}$ in terms of the chemical potential to temperature ratio, the resultant present-day baryon asymmetry can be consistent with our Universe, although simple realizations of the GUT baryogenesis are hard to satisfy the condition. We also argue the way to overcome the difficulty in the GUT baryogenesis. The intergalactic magnetic fields with $B_0\sim 10^{-16\sim 17}$ G and ${\lambda }_0\sim 10^{-2\sim 3}$ pc are the smoking gun of the baryogenesis scenario as discussed before.

10 pages; v2: comments and references added, matches version published in PRD

References in corpus (12)

• The Chiral Magnetic Effect
• The Standard Model cross-over on the lattice
• Evolution of Primordial Magnetic Fields from Phase Transitions
• Baryogenesis from Decaying Magnetic Helicity
• Large-scale magnetic fields can explain the baryon asymmetry of the Universe
• 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
• Laminar and turbulent dynamos in chiral magnetohydrodynamics-I: Theory
• The turbulent chiral-magnetic cascade in the early universe
• Lepton asymmetry growth in the symmetric phase of an electroweak plasma with hypermagnetic fields versus its washing out by sphalerons
• Baryon asymmetry from hypermagnetic helicity in dilaton hypercharge electromagnetism
• Fundamental Implications of Intergalactic Magnetic Field Observations

Cited by in corpus (25)

• Gauge Field and Fermion Production during Axion Inflation
• Baryogenesis from axion inflation
• Chiral effects in astrophysics and cosmology
• Scale-invariant Helical Magnetic Fields from Inflation
• Wash-In Leptogenesis
• Gravitational Waves from Primordial Magnetic Fields via Photon-Graviton Conversion
• Wash-in leptogenesis after axion inflation
• Baryon isocurvature constraints on the primordial hypermagnetic fields
• Effective treatment of U(1) gauge field and charged particles in axion inflation
• A new constraint on primordial lepton flavour asymmetries
• Diraxiogenesis
• Decay law of magnetic turbulence with helicity balanced by chiral fermions
• Chiral magnetohydrodynamics with zero total chirality
• Baryogenesis from combined Higgs - scalar field inflation
• Chiral gravitational effect in time-dependent backgrounds
• Baryogenesis from Decaying Magnetic Helicity in Axiogenesis
• Electroweak Sphaleron in a Magnetic field
• Baryogenesis via gauge field production from a relaxing Higgs
• Lepton Flavor Asymmetries: from the early Universe to BBN
• Magnetic Field Transfer From A Hidden Sector
• Acoustic Misalignment Mechanism for Axion Dark Matter
• Freeze-in and freeze-out generation of lepton asymmetries after baryogenesis in the $\nu$MSM
• Gauge Field Production and Schwinger Reheating in Runaway Axion Inflation
• Magnetogenesis from isocurvature initial conditions
• A lower bound on the right-handed neutrino mass from wash-in leptogenesis