Lax matrices for lattice equations which satisfy consistency-around-a-face-centered-cube
arXiv:2007.01196 · doi:10.1088/1361-6544/ac1f76
Abstract
There is a recently discovered formulation of the multidimensional consistency integrability condition for lattice equations, called consistency-around-a-face-centered-cube(CAFCC), which is applicable to equations defined on a vertex and its four nearest neighbours on the square lattice. This paper introduces a method of deriving Lax matrices for the equations which satisfy CAFCC. This method gives novel Lax matrices for such equations, which include previously known equations of discrete Toda-, or Laplace-type, as well as newer equations which have only appeared in the context of CAFCC.
arXiv comment30 pages, 10 figures, v2: minor edits and typos
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