The next 16 higher spin currents and three-point functions in the large $$\mathcal{N}=4$$ N = 4 holography

Changhyun Ahn, Dong-gyu Kim, Man Hea Kim
2017 European Physical Journal C: Particles and Fields  
By using the known operator product expansions (OPEs) between the lowest 16 higher spin currents of spins (1, 3/2, 3/2, 3/2, 3/2, 2,2,2,2,2,2, 5/2, 5/2, 5/2, 5/2, 3) in an extension of the large N=4 linear superconformal algebra, one determines the OPEs between the lowest 16 higher spin currents in an extension of the large N=4 nonlinear superconformal algebra for generic N and k. The Wolf space coset contains the group G =SU(N+2) and the affine Kac-Moody spin 1 current has the level k. The
more » ... 16 higher spin currents of spins (2,5/2, 5/2, 5/2, 5/2, 3,3,3,3,3,3, 7/2, 7/2, 7/2, 7/2,4) arise in the above OPEs. The most general lowest higher spin 2 current in this multiplet can be determined in terms of affine Kac-Moody spin 1/2, 1 currents. By careful analysis of the zero mode (higher spin) eigenvalue equations, the three-point functions of bosonic higher spin 2, 3, 4 currents with two scalars are obtained for finite N and k. Furthermore, we also analyze the three-point functions of bosonic higher spin 2, 3, 4 currents in the extension of the large N=4 linear superconformal algebra. It turns out that the three-point functions of higher spin 2,3 currents in the two cases are equal to each other at finite N and k. Under the large (N,k) 't Hooft limit, the two descriptions for the three-point functions of higher spin 4 current coincide with each other. The higher spin extension of SO(4) Knizhnik Bershadsky algebra is described.
doi:10.1140/epjc/s10052-017-5064-6 fatcat:67vu3ykf7rgdnmxaa55qlcay4i