Abstract
By relating the two-dimensional U(N) Principal Chiral Model to a simple linear system we obtain a free-field parametrisation of solutions. Obvious symmetry transformations on the free-field data give symmetries of the model. In this way all known "hidden symmetries" and Bäcklund transformations, as well as a host of new symmetries, arise.
| Original language | English |
|---|---|
| Pages (from-to) | 675-695 |
| Number of pages | 21 |
| Journal | Communications in Mathematical Physics |
| Volume | 190 |
| Issue number | 3 |
| DOIs | |
| State | Published - 1998 |