The cohomology of superspace, pure spinors and invariant integrals

نویسنده

  • N. Berkovits
چکیده

The superform construction of supersymmetric invariants, which consists of integrating the top component of a closed superform over spacetime, is reviewed. The cohomological methods necessary for the analysis of closed superforms are discussed and some further theoretical developments presented. The method is applied to higher-order corrections in heterotic string theory up to α. Some partial results on N = 2, d = 10 and N = 1, d = 11 are also given.

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تاریخ انتشار 2008