We conjecture that the light-cone Hamiltonian of N = 8 supergravity can be expressed as a quadratic form. We explain why this rewriting is unique to maximally supersymmetric theories. The N = 8 quartic interaction vertex is constructed and used to verify that this conjecture holds to order κ2. © 2006 Elsevier B.V. All rights reserved.
Ananth, S., Brink, L., Heise, R., & Svendsen, H. G. (2006). The N = 8 supergravity Hamiltonian as a quadratic form. Nuclear Physics B, 753(1–2), 195–210. https://doi.org/10.1016/j.nuclphysb.2006.07.014