Canonical Formulation of $O(N)$ Vector/Higher Spin Correspondence
  We discuss the canonical structure of the collective formulation of Vector Model/Higher Spin Duality in AdS$_4$. This involves a construction of bulk AdS Higher Spin fields through a time-like bi-local Map, with a Hamiltonian and canonical structure which are established to all orders in $1/N$. 
Robert de Mello Koch, Antal Jevicki, Jo\~ao P. Rodrigues and Junggi   Yoon
hep-th