2000 character limit reached
Theta Expansion of First Massive Vertex Operator in Pure Spinor (1706.01196v1)
Published 5 Jun 2017 in hep-th
Abstract: We provide the covariant superspace equations that are sufficient to determine the complete $\theta$ expansion of the vertex operator of the open string massive states with $(mass)2=1/\alpha'$ in pure spinor formalism of superstring theory. These equations get rid of the redundant degrees of freedom in superfields and are consistent with the BRST conditions derived in [1]. Further, we give the explicit $\theta$ expansion of the superfields appearing in the unintegrated vertex to $O(\theta3)$. Finally, we compute the contribution to a 3-point tree amplitude with the resulting vertex operator upto $O(\theta3)$ and find its kinematic structure to be identical to the corresponding RNS computation.