Equivalence of Two-Loop Superstring Amplitudes in the Pure Spinor and RNS Formalisms
arXiv:hep-th/0509234 · doi:10.1103/PhysRevLett.96.011602
Abstract
The pure spinor formalism for the superstring has recently been used to compute massless four-point two-loop amplitudes in a manifestly super-Poincare covariant manner. In this paper, we show that when all four external states are Neveu-Schwarz, the two-loop amplitude coincides with the RNS result.
9 pages harvmac tex, added introductory paragraph