Electrical Conduction in the Early Universe

الأصل · EN

The electrical conductivity has been calculated in the early universe at temperatures below as well as above the electroweak vacuum scale, Tc≃ 100GeV. Debye and dynamical screening of electric and magnetic interactions leads to a finite conductivity, σel T/α(1/α), at temperatures well below Tc. At temperatures above, W± charge-exchange processes -- analogous to color exchange through gluons in QCD -- effectively stop left-handed charged leptons. However, right-handed leptons can carry current, resulting in σel/T being only a factor ⁴θW smaller than at temperatures below Tc.