Light-Cone Analysis of the Pure Spinor Formalism for the Superstring

Abstract

Physical states of the superstring can be described in light-cone gauge by acting with transverse bosonic ${\alpha }_{-n}^j$ and fermionic ${\bar{q}}_{-n}^{\dot{a}}$ operators on an $SO\left(8\right)$-covariant superfield where $j,\dot{a}=1$ to $8$. In the pure spinor formalism, these states are described in an $SO\left(9,1\right)$-covariant manner by the cohomology of the BRST charge $Q=\frac{1}{2\pi i}\oint {\lambda }^{\alpha }{d}_{\alpha }$. In this paper, a similarity transformation is found which simplifies the form of $Q$ and maps the light-cone description of the superstring vertices into DDF-like operators in the cohomology of $Q$.

16 pages. Added reference to the paper of Mukhopadhyay

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