Simplicial Chiral Models
  Principal chiral models on a d-1 dimensional simplex are introduced and studied analytically in the large $N$ limit. The $d = 0, 2, 4$ and $\infty$ models are explicitly solved. Relationship with standard lattice models and with few-matrix systems in the double scaling limit are discussed. 
Paolo Rossi (INFN at Pisa) and Chung-I Tan (Brown Univ.)