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R4 terms in supergravity and M-theory

P. S. Howe

hep-tharXiv:hep-th/0408177

Abstract

Higher-order invariants and their role as possible counterterms for supergravity theories are reviewed. It is argued that N=8 supergravity will diverge at 5 loops. The construction of R4 superinvariants in string and M-theory is discussed.

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