Light-cone gauge for a two-form
= Light-cone gauge for a two-form
{title2=$B_{-m}=0$}
When $\partial_-$ is invertible, choose $B_{-m}=0$. Residual gauge parameters are exact one-forms and act trivially on $B$. The remaining independent modes are antisymmetric transverse components $B_{IJ}$, satisfying $\square B_{IJ}=0$; longitudinal components obey $B_{+I}=\partial_-^{-1}\partial^JB_{IJ}$. There are $(D-2)(D-3)/2$ physical polarizations.