Large N limit of SO(N) scalar gauge theory
  In this paper we study the large $N_c$ limit of SO(N_c) gauge theory coupled to a real scalar field following ideas of Rajeev. We see that the phase space of this resulting classical theory is Sp_1(H)/U(H_+) which is the analog of the Siegel disc in infinite dimensions. The linearized equations of motion give us a version of the well-known 't Hooft equation of two dimensional QCD. 
E. Toprak (1) and O. T. Turgut (1 and 2) ((1) Bogazici University,   Istanbul and (2) Feza Gursey Institute, Istanbul)