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N=8 counterterms and E7(7) current conservation
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DOI：10.1007/JHEP06(2011)073.png)
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摘要
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We examine conservation of the E-7(7) Noether-Gaillard-Zumino current in the presence of N=8 supergravity counterterms using the momentum space helicity formalism, which significantly simplifies the calculations. The main result is that the 4-point counterterms at any loop order L are forbidden by the E-7(7) current conservation identity. We also clarify the relation between linearized and full non-linear superinvariants as candidate counterterms. This enables us to show that all n-point counterterms at L = 7, 8 are forbidden since they provide a non-linear completions of the 4-point ones. This supports and exemplifies our general proof in arXiv:1103.4115 of perturbative UV finiteness of N=8 supergravity.
Keyword:
Supersymmetry and Duality
Supergravity Models
期刊
IF:
5.5
论文数:
3.9W
被引数:
13.7W
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