%0 Journal Article
%T Summing Over World-Sheet Boundaries
%A Michael B. Green
%A Joe Polchinski
%J Physics
%D 1994
%I arXiv
%R 10.1016/0370-2693(94)90367-0
%X The moduli associated with boundaries in a Riemann surface are parametrized by the positions and strengths of electric charges. This suggests a method for summing over orientable Riemann surfaces with Dirichlet boundary conditions on the embedding coordinates. A light-cone parameterization of such boundaries is also discussed.
%U http://arxiv.org/abs/hep-th/9406012v1