The ODE/IM correspondence and PT-symmetric quantum mechanics
arXiv:hep-th/0201108
Abstract
A connection between integrable quantum field theory and the spectral theory of ordinary differential equations is reviewed, with particular emphasis being given to its relevance to certain problems in PT-symmetric quantum mechanics.
12 pages, 9 figures. Contribution to the proceedings of the NATO Advanced Research Workshop on Statistical Field Theories, Como, 18-23 June 2001