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THE REAL LOCI OF CALOGEROMOSER SPACES, REPRESENTATIONS OF RATIONAL CHEREDNIK ALGEBRAS
 

Summary: THE REAL LOCI OF CALOGERO­MOSER SPACES,
REPRESENTATIONS OF RATIONAL CHEREDNIK ALGEBRAS
AND THE SHAPIRO CONJECTURE
IAIN GORDON, EMIL HOROZOV, AND MILEN YAKIMOV
Abstract. We prove a criterion for the reality of irreducible representations
of the rational Cherednik algebras H0,1(Sn). This is shown to imply a criterion
for the real loci of the Calogero­Moser spaces Cn in terms of the Etingof­
Ginzburg finite maps : Cn Cn
/Sn ×Cn
/Sn, recovering a result of Mikhin,
Tarasov, and Varchenko [MTV2]. As a consequence we obtain a criterion for
the real locus of the Wilson's adelic Grassmannian of rank one bispectral
solutions of the KP hierarchy. Using Wilson's first parametrisation of the
adelic Grassmannian, we give a new proof of a result of [MTV2] on real bases
of spaces of quasi polynomials. The Shapiro Conjecture for Grassmannians is
equivalent to a special case of our result for Calogero­Moser spaces, namely
for the fibres of over Cn
/Sn × 0.
1. Introduction
The n-th Calogero­Moser space Cn is the geometric quotient of

  

Source: Akhmedov, Azer - Department of Mathematics, University of California at Santa Barbara

 

Collections: Mathematics