Pion decay constant
= Pion decay constant
{title2=$f_\pi$}
{wiki}
The pion decay constant normalizes the axial current matrix element and the leading pion nonlinear-sigma-model action. It has mass dimension one in four spacetime dimensions.
= Pion decay constant
{title2=$f_\pi$}
{wiki}
The pion decay constant normalizes the axial current matrix element and the leading pion nonlinear-sigma-model action. It has mass dimension one in four spacetime dimensions.