2007/03/31 by Patrick Dorey, Clare Dunning, Roberto Tateo
Physics and Astronomy · #hep-th
paper · pdf · doi:10.1088/1751-8113/40/32/r01
published as J.Phys.A40:R205,2007 · 102 pages, 27 figures. v2: added references
arxiv created 2007/07/12 · arxiv updated 2009/12/01
This article reviews a recently-discovered link between integrable quantum field theories and certain ordinary differential equations in the complex domain. Along the way, aspects of PT-symmetric quantum mechanics are discussed, and some elementary features of the six-vertex model and the Bethe ansatz are explained.