6533b7d4fe1ef96bd1261f1e
RESEARCH PRODUCT
Lepton asymmetries and primordial hypermagnetic helicity evolution
Dmitry SokoloffVictor B. SemikozJosé W. F. Vallesubject
PhysicsPhase transitionParticle physicsQuantitative Biology::BiomoleculesCosmology and Nongalactic Astrophysics (astro-ph.CO)010308 nuclear & particles physicsElectroweak interactionFOS: Physical sciencesAstronomy and AstrophysicsAstrophysicsAstrophysics::Cosmology and Extragalactic Astrophysics01 natural sciencesHelicityMagnetic fieldHigh Energy Physics - PhenomenologyHigh Energy Physics - Phenomenology (hep-ph)Orders of magnitude (time)Magnetic helicity0103 physical sciences010306 general physicsDynamoLeptonAstrophysics - Cosmology and Nongalactic Astrophysicsdescription
The hypermagnetic helicity density at the electroweak phase transition (EWPT) exceeds many orders of magnitude the galactic magnetic helicity density. Together with previous magnetic helicity evolution calculations after the EWPT and hypermagnetic helicity conversion to the magnetic one at the EWPT, the present calculation completes the description of the evolution of this important topological feature of cosmological magnetic fields. It suggests that if the magnetic field seeding the galactic dynamo has a primordial origin, it should be substantially helical. This should be taken into account in scenarios of galactic magnetic field evolution with a cosmological seed.
| year | journal | country | edition | language |
|---|---|---|---|---|
| 2012-05-16 |