Background constraints in the infinite tension limit of the heterotic string
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In this work we investigate the classical constraints imposed on the supergravity and super Yang-Mills backgrounds in the α′ → 0 limit of the heterotic string using the pure spinor formalism. Guided by the recently observed sectorization of the model, we show that all the ten-dimensional constraints are elegantly obtained from the single condition of nilpotency of the BRST charge.
KeywordsConformal Field Models in String Theory Superstrings and Heterotic Strings
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