Worldsheet diffeomorphism ghost operator
= Worldsheet diffeomorphism ghost operator
{title2=$(P_1c)_{ab}=\nabla_ac_b+\nabla_bc_a-\gamma_{ab}\nabla_dc^d$}
The <trace>-free metric variation is $(P_1c)_{ab}=\nabla_ac_b+\nabla_bc_a-\gamma_{ab}\nabla_dc^d$. A symmetric <trace>-free antighost exponentiates the <Faddeev-Popov determinant>. In light-cone worldsheet coordinates its two chiral kinetic terms are $b_{++}\partial_-c^+$ and $b_{--}\partial_+c^-$.