Sewing string tree vertices with ghosts
arXiv:hep-th/9909162 · doi:10.1590/S0103-97332002000100035
Abstract
It is shown how to sew string vertices with ghosts at tree level in order to produce new tree vertices using the Group Theoretic approach to String Theory. It is then verified the BRST invariance of the sewn vertex and shown that it has the correct ghost number.
arXiv commentLaTeX, 26 pages, 19 figures