Phase model expectation values and the 2-Toda hierarchy
arXiv:0906.3358 · doi:10.1088/1742-5468/2009/08/P08010
Abstract
We show that the scalar product of the phase model is a (restricted) 2-Toda tau-function. Additionally, we highlight a correspondence between the boundary correlation functions of the model and the wave-functions of the hierarchy.
20 pages, 6 figures. Minor changes