Covariant Quantization of Superstrings Without Pure Spinor Constraints

Details Covariant Quantization of Superstrings Without Pure Spinor Constraints Covariant Quantization of Superstrings Without Pure Spinor Constraints

2001-12-18

arxiv.org/abs/hep-th/0112162v1

JHEP 0210 (2002) 054

Physics

High Energy Physics

High Energy Physics - Theory

30 pages

Scientific paper

10.1088/1126-6708/2002/10/054

We construct a covariant quantum superstring, extending Berkovits' approach by introducing new ghosts to relax the pure spinor constraints. The central charge of the underlying Kac-Moody algebra, which would lead to an anomaly in the BRST charge, is treated as a new generator with a new b-c system. We construct a nilpotent BRST current, an anomalous ghost current and an anomaly-free energy-momentum tensor. For open superstrings, we find the correct massless spectrum. In addition, we construct a Lorentz invariant B-field to be used for the computation of the integrated vertex operators and amplitudes.

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