Classical frustration and quantum disorder in spin-orbital models
arXiv:cond-mat/9811075
Abstract
The most elementary of all physical spin-orbital models is the Kugel-Khomskii model describing a S=1/2, degenerate Mott-insulator. Recent theoretical work is reviewed revealing that the classical limit is characterized by a point of perfect dynamical frustration. It is suggested that this might give rise to a quantum disordered ground state.
7 pages Revtex, 3 ps figures, proceedings 1998 NEC symposium, Nasu, Japan