Calogero-Moser space and Kostka polynomials

Michael Finkelberg, Victor Ginzburg

Published 2001-10-17, updated 2001-10-18Version 2

We consider the canonical map from the Calogero-Moser space to symmetric powers of the affine line, sending conjugacy classes of pairs of n by n matrices to their eigenvalues. We show that the character of a natural C^*-action on the scheme-theoretic zero fiber of this map is given by Kostka polynomials.