Worldsheet ghost field
= Worldsheet ghost field
{title2=$b_{\alpha\beta},c^\alpha$}
{wiki=Ghosts_in_string_theory}
Gauge fixing worldsheet diffeomorphism and Weyl symmetry introduces an anticommuting vector ghost $c^\alpha$ and a symmetric traceless antighost $b_{\alpha\beta}$. In complex coordinates they form holomorphic and antiholomorphic $bc$ systems.