Higher spin N = 8 supergravity

Higher spin N = 8 supergravity

The product of two N = 8 supersingletons yields an infinite tower of massless states of higher spin in four dimensional anti de Sitter space. All the states with spin s ≥ 1 correspond to generators of Vasiliev’s super higher spin algebra shsE(8|4) which contains the D = 4, N = 8 anti de Sitter superalgebra OSp(8|4). Gauging the higher spin algebra and introducing a matter multiplet in a quasi-a...

HIGHER SPIN N = 8 SUPERGRAVITY IN AdS4 a

Towards Massless Higher Spin Extension of D = 5 , N = 8

The AdS5 superalgebra PSU(2, 2|4) has an infinite dimensional extension, which we denote by hs(2, 2|4). We show that the gauging of hs(2, 2|4) gives rise to a spectrum of physical massless fields which coincides with the symmetric tensor product of two AdS5 spin-1 doubletons (i.e. the N=4 SYM multiplets living on the boundary of AdS5). This product decomposes into levels l = 0, 1, 2, ..,∞ of ma...

N = 8 Supergravity on the Light Cone

We construct the generating functional for the light-cone superfield amplitudes in a chiral momentum superspace. It generates the n-point particle amplitudes which on shell are equivalent to the covariant ones. Based on the action depending on unconstrained light-cone chiral scalar superfield, this functional provides a regular d=4 QFT path integral derivation of the Nair-type amplitude constru...

N = 8 Supergravity 4 - point Amplitudes

We present the explicit expressions in N=8 supergravity for the bosonic 4-particle tree and 1-loop amplitudes including vectors and scalars. We also present the candidate 4point UV divergences in a form of helicity amplitudes, corresponding to 3-loop manifestly N=8 supersymmetric and Lorentz covariant counterterm. This may shed some light on the 3-loop finiteness of N=8 SG and on a conjectured ...