Symplectic field theory of a disk, quantum integrable systems, and Schur   polynomials
  We consider commuting operators obtained by quantization of Hamiltonians of the Hopf (aka dispersionless KdV) hierarchy. Such operators naturally arise in the setting of Symplectic Field Theory (SFT). A complete set of common eigenvectors of these operators is given by Schur polynomials. We use this result for computing the SFT potential of a disk. 
Boris Dubrovin
math-ph math.MP math.SG