From the Kadomtsev-Petviashvili equation halfway to Ward's chiral model
arXiv:0712.3689
Abstract
The "pseudodual" of Ward's modified chiral model is a dispersionless limit of the matrix Kadomtsev-Petviashvili (KP) equation. This relation allows to carry solution techniques from KP over to the former model. In particular, lump solutions of the su(m) model with rather complex interaction patterns are reached in this way. We present a new example.
6 pages, 2 figures, Workshop "Algebra, Geometry, and Mathematical Physics", Goeteborg, October 2007, 2nd version: corrections on page 2