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hep-th2010★ 155 cited
E7(7) constraints on counterterms in N=8 supergravity
Niklas Beisert, Henriette Elvang, Daniel Z. Freedman +3
We prove by explicit computation that 6-point matrix elements of D^4R^4 and D^6R^4 in N=8 supergravity have non-vanishing single-soft scalar limits, and therefore these operators v…
hep-th2010★ 91 cited
Stringy KLT relations, global symmetries, and E_7(7) violation
Henriette Elvang, Michael Kiermaier
We study consequences of the Kawai-Lewellen-Tye (KLT) relations applied to tree amplitudes in toroidal compactifications of string theory to four dimensions. The closed string tree…