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.
@article{arxiv.hep-th/0408177,
title = {$R^4$ terms in supergravity and M-theory},
author = {P. S. Howe},
journal= {arXiv preprint arXiv:hep-th/0408177},
year = {2007}
}
Comments
Contribution to Deserfest: A celebration of the life and work of Stanley Deser, Ann Arbor, Michigan, April 3-5 2004. 12 pages