The solution space of the unitary matrix model string equation and the Sato Grassmannian

@article{Anagnostopoulos1991TheSS,
  title={The solution space of the unitary matrix model string equation and the Sato Grassmannian},
  author={K. Anagnostopoulos and M. Bowick and A. Schwarz},
  journal={Communications in Mathematical Physics},
  year={1991},
  volume={148},
  pages={469-485}
}
The space of all solutions to the string equation of the symmetric unitary one-matrix model is determined. It is shown that the string equation is equivalent to simple conditions on pointsV1 andV2 in the big cell Gr(0) of the Sato Grassmannian Gr. This is a consequence of a well-defined continuum limit in which the string equation has the simple form matrices of differential operators. These conditions onV1 andV2 yield a simple system of first order differential equations whose analysis… Expand
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