Helical Magnetic Fields from Sphaleron Decay and Baryogenesis
arXiv:0801.3653 · doi:10.1103/PhysRevLett.101.171302
Abstract
Many models of baryogenesis rely on anomalous particle physics processes to give baryon number violation. By numerically evolving the electroweak equations on a lattice, we show that baryogenesis in these models creates helical cosmic magnetic fields. After a transitory period, electroweak dynamics is found to conserve the Chern-Simons number and the total electromagnetic helicity. We argue that baryogenesis could lead to magnetic fields of nano-Gauss strength today on astrophysical length scales. In addition to being astrophysically relevant, such helical magnetic fields can provide an independent probe of baryogenesis and CP violation in particle physics.
4 pages, 1 figure. Added references, fixed typos
References in corpus (8)
- Origin of Galactic and Extragalactic Magnetic Fields
- The Magnetized Universe
- Magnetic field production during preheating at the electroweak scale
- Chern-Simons production during preheating in hybrid inflation models
- Baryon asymmetry from electroweak tachyonic preheating
- An Electroweak Oscillon
- Scaling laws in decaying helical hydromagnetic turbulence
- On the Detection of Magnetic Helicity
Cited by in corpus (52)
- The origin, evolution and signatures of primordial magnetic fields
- Cosmological Backgrounds of Gravitational Waves and eLISA/NGO: Phase Transitions, Cosmic Strings and Other Sources
- Self-consistent evolution of magnetic fields and chiral asymmetry in the early Universe
- Evolution of Primordial Magnetic Fields from Phase Transitions
- Magnetic fields in the early universe
- Progress on Cosmological Magnetic Fields
- Evolution of hydromagnetic turbulence from the electroweak phase transition
- Chiral Effects and Cosmic Magnetic Fields
- Large-scale magnetic fields can explain the baryon asymmetry of the Universe
- A Model of Universe Anisotropization
- Helical Magnetic Fields from Inflation
- Leptogenesis and Primordial Magnetic Fields
- Primordial Magnetic Field Limits from CMB Trispectrum - Scalar Modes and Planck Constraints
- Can the observed large scale magnetic fields be seeded by helical primordial fields?
- Magnetic field and gravitational waves from the first-order Phase Transition
- Cosmic Microwave Background Trispectrum and Primordial Magnetic Field Limits
- Primordial Magnetism in the CMB: Exact Treatment of Faraday Rotation and WMAP7 Bounds
- Intergalactic magnetic field spectra from diffuse gamma rays
- Evolution of inflation-generated magnetic field through phase transitions
- Monopoles on strings
- Is the baryon asymmetry of the Universe related to galactic magnetic fields?
- Magnetic field production at a first-order electroweak phase transition
- Probing Early Cosmic Magnetic Fields through Pair Echos from High-Redshift GRBs
- Probing Primordial Magnetism with Off-Diagonal Correlators of CMB Polarization
- Parity-odd correlators of diffuse gamma rays and intergalactic magnetic fields
- Maxwell-Kostelecký Electromagnetism and Cosmic Magnetization
- Magnetic field generation from bubble collisions during first-order phase transition
- Magnetic Helicity in Sphaleron Debris
- Statistical Properties of Scale-Invariant Helical Magnetic Fields and Applications to Cosmology
- Evolution of primordial magnetic fields in mean-field approximation
- Magnetic heating across the cosmological recombination era: Results from 3D MHD simulations
- Creation of Magnetic Monopoles in Classical Scattering
- Magnetogenesis with gravitational waves and primordial black hole dark matter
- Detecting circular polarisation in the stochastic gravitational-wave background from a first-order cosmological phase transition
- Circular dichroism, magnetic knots and the spectropolarimetry of the Cosmic Microwave Background
- The effects of the U(1) Chern-Simons term and its baryonic contribution on matter asymmetries and hypermagnetic fields
- Modified Magnetohydrodynamics Around the Electroweak Transition
- On the resilience of helical magnetic fields to turbulent diffusion and the astrophysical implications
- Fundamental Implications of Intergalactic Magnetic Field Observations
- Reduced bispectrum seeded by helical primordial magnetic fields
- Monopole-Antimonopole Scattering
- Vacuum Topology and the Electroweak Phase Transition
- Spectra of Magnetic Fields Injected during Baryogenesis
- Simulations of Cold Electroweak Baryogenesis: Hypercharge U(1) and the creation of helical magnetic fields
- Primordial Magnetic Helicity from Stochastic Electric Currents
- Kibble mechanism for electroweak magnetic monopoles and magnetic fields
- Electroweak Phase Transition in an Inert Complex Triplet Model
- Repeated Gravitational Wave Bursts from Cosmic Strings
- Soliton Creation with a Twist
- Primordial black holes and magnetic fields in conformal neutrino mass models
- Electromagnetic Currents from Electroweak Fermion Level Crossing
- Primordial Magnetogenesis from Killing Vector Fields