ABJ Correlators with Weakly Broken Higher Spin Symmetry

Understand

We consider four-point functions of operators in the stress tensor multiplet of the 3d $\mathcal{N}=6$ $U(N)_k\times U(N+M)_{-k}$ or $SO(2)_{2k}\times USp(2+2M)_{-k}$ ABJ theories in the limit where $M$ and $k$ are taken to infinity while $N$ and $\lambda\sim M/k$ are held fixed.

• In this limit, these theories have weakly broken higher spin symmetry and are holographically dual to $\mathcal{N}=6$ higher spin gravity on $AdS_4$, where $\lambda$ is dual to the bulk parity breaking parameter.
• We use the weakly broken higher spin Ward identities, superconformal Ward identities, and the Lorentzian inversion formula to fully determine the tree level stress tensor multiplet four-point function up to two free parameters.
• We then use supersymmetric localization to fix both parameters for the ABJ theories in terms of $\lambda$, so that our result for the tree level correlator interpolates between the free theory at $\lambda=0$ and a parity invariant interacting theory at $\lambda=1/2$.