Bosonization in the path integral formulation

Abstract

We establish the direct $d=2$ on-shell bosonization $ψ_{L}(x_{+})=e^{iξ(x_{+})}$ and $ψ_{R}^{\dagger}(x_{-})=e^{iξ(x_{-})}$ in path integral formulation by deriving the off-shell relations $ψ_{L}(x)ψ_{R}^{\dagger}(x)=\exp[iξ(x)]$ and $ψ_{R}(x)ψ_{L}^{\dagger}(x)=\exp[-iξ(x)]$. Similarly, the on-shell bosonization of the bosonic commuting spinor, $ϕ_{L}(x_{+})=ie^{-iξ(x_{+})}\partial^{+}e^{-iχ(x_{+})}$, $ϕ^{\dagger}_{R}(x_{-})=e^{-iξ(x_{-})-iχ(x_{-})}$ and $ϕ_{R}(x_{-})=ie^{iξ(x_{-})}\partial^{-}e^{+iχ(x_{-})}$, $ϕ^{\dagger}_{L}(x_{+})=e^{iξ(x_{+})+iχ(x_{+})}$, is established in path integral formulation by deriving the off-shell relations $ϕ_{L}(x)ϕ^{\dagger}_{R}(x)=ie^{-iξ(x)}\partial^{+}e^{-iχ(x)}$ and $ϕ_{R}(x)ϕ^{\dagger}_{L}(x)=ie^{iξ(x)}\partial^{-}e^{iχ(x)}$.