Type: Article
Publication Date: 2018-01-01
Citations: 10
DOI: https://doi.org/10.1007/jhep01(2018)024
We argue that $$ \mathcal{N}=8 $$ supergravity in four dimensions exhibits an exceptional E8(8) symmetry, enhanced from the known E7(7) invariance. Our procedure to demonstrate this involves dimensional reduction of the $$ \mathcal{N}=8 $$ theory to d = 3, a field redefinition to render the E8(8) invariance manifest, followed by dimensional oxidation back to d = 4.