6533b833fe1ef96bd129c11b
RESEARCH PRODUCT
Is the baryon asymmetry of the Universe related to galactic magnetic fields?
Dmitry SokoloffJosé W. F. ValleV. B. Semikozsubject
PhysicsNuclear and High Energy PhysicsParticle physicsCosmology and Nongalactic Astrophysics (astro-ph.CO)High Energy Physics::PhenomenologyFOS: Physical sciencesFísicaMagnetic fieldHigh Energy Physics - PhenomenologyHigh Energy Physics - Phenomenology (hep-ph)Baryon asymmetryElectron currentHigh Energy Physics::ExperimentAstrophysics - Cosmology and Nongalactic Astrophysicsdescription
A tiny hypermagnetic field generated before the electroweak phase transition (EWPT) associated to the generation of elementary particle masses can polarize the early Universe hot plasma at huge redshifts z >= 10(15). The anomalous violation of the right-handed electron current characteristic of the EWPT converts the lepton asymmetry into a baryon asymmetry. Under reasonable approximations, the magnetic field strength inferred by requiring such "leptogenic'' origin for the observed baryon asymmetry of the Universe matches the large-scale cosmological magnetic field strengths estimated from current astronomical observations.
| year | journal | country | edition | language |
|---|---|---|---|---|
| 2009-10-08 |