21 citations · 29 across the 5 of their papers we have counts for
5 papers
Pinching parameters for open (super) strings
Sam Playle, Stefano Sciuto
We present an approach to the parametrization of (super) Schottky space obtained by sewing together three-punctured discs with strips. Different cubic ribbon graphs classify distin…
Schwinger-type parametrization of open string worldsheets
Sam Playle, Stefano Sciuto
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.…
Deforming super Riemann surfaces with gravitinos and super Schottky groups
Sam Playle
The (super) Schottky uniformization of compact (super) Riemann surfaces is briefly reviewed. Deformations of super Riemann surface by gravitinos and Beltrami parameters are recast…
Two-loop Yang-Mills diagrams from superstring amplitudes
Lorenzo Magnea, Sam Playle, Rodolfo Russo +1
Starting from the superstring amplitude describing interactions among D-branes with a constant world-volume field strength, we present a detailed analysis of how the open string de…
Multi-loop open string amplitudes and their field theory limit
Lorenzo Magnea, Sam Playle, Rodolfo Russo +1
We study the field theory limit of multi-loop (super)string amplitudes, with the aim of clarifying their relationship to Feynman diagrams describing the dynamics of the massless st…