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Relating the $b$ ghost and the vertex operators of the pure spinor superstring (2101.01129v3)
Published 4 Jan 2021 in hep-th
Abstract: The OPE between the composite $b$ ghost and the unintegrated vertex operator for massless states of the pure spinor superstring is computed and shown to reproduce the structure of the bosonic string result. The vanishing of the double pole singularity is Lorentz gauge and the single pole is shown to be equal to the corresponding integrated vertex operator.
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