We examine the Kac-Schwarz problem of specification of point in Grassmannian in the restricted case of gapone first-order differential Kac-Schwarz operators. While the pair of constraints satisfying [ ϰ1, W] = 1 always leads to Kontsevich type models , in the case of [ ϰ1, W] = W the corresponding KP τ-functions are represented as more sophisticated matrix integrals.
Nuclear Physics B Proceedings Supplements
- Pub Date:
- June 1996
- High Energy Physics - Theory
- 19 pages, latex, no figures, contribution to the proceedings of the 29th International Symposium Ahrenshoop on the Theory of Elementary Particles, Buckow, Germany