The Bernstein-Sato b-Function of the Space of Cyclic Pairs

Abstract

We compute the Bernstein-Sato polynomial of $f$, a function which given a pair $(M,v)$ in $X=M_n(\mathbf{C})\times {\mathbf{C}}^n$ tests whether $v$ is a cyclic vector for $M$. The proof includes a description of shift operators corresponding to the Calogero-Moser operator $L_k$ in the rational case.

arXiv comment14 pages, Referee suggested changes made, to appear in Publ. RIMS