Schwinger-type parametrization of open string worldsheets
arXiv:1611.08604 · doi:10.1016/j.physletb.2017.01.009
Abstract
A parametrization of (super) moduli space near the corners corresponding to bosonic or Neveu-Schwarz open string degenerations is introduced for worldsheets of arbitrary topology. With this parametrization, Feynman graph polynomials arise as the $α' \to 0$ limit of objects on moduli space. Furthermore, the integration measures of string theory take on a very simple and elegant form.
17 pages, 3 figures