Dispersionless modified DKP hierarchy as the Yang-Baxter equation
arXiv:2607.09180
Abstract
We show that the dispersionless version of the modified DKP hierarchy originally defined as the limit of relations for the tau-function of the Hirota-Miwa type has an equivalent reformulation as the Yang-Baxter equation for Baxter's -matrix of Boltzmann weights for the 8-vertex model.
33 pages, no figures