Matrix Models for Random Partitions
arXiv:1005.5715 · doi:10.1016/j.nuclphysb.2011.06.007
Abstract
We derive exact matrix integral representations for different sums over partitions. The characteristic feature of all obtained matrix models is the presence of logarithmic (or, vice versa, exponential) terms in the potential. Our derivation is based on the application of the higher Casimir operators. The Toda lattice integrability of the basic sums over partitions can be easily derived from the matrix model representation.
26 pages, presentation improved, references corrected