Mean--field electrodynamics: Critical analysis of various analytical approaches to the mean electromotive force

Karl-Heinz Raedler, Matthias Rheinhardt

There are various analytical approaches to the mean electromotive force $\mathcal{E}=<\vec{u}\times \vec{b}>$ crucial in mean--field electrodynamics, with $\vec{u}$ and $\vec{b}$ bein…