Hodge polynomials and birational types of moduli spaces of coherent systems on elliptic curves

Abstract

In this paper we consider moduli spaces of coherent systems on an elliptic curve. We compute their Hodge polynomials and determine their birational types in some cases. Moreover we prove that certain moduli spaces of coherent systems are isomorphic. This last result uses the Fourier-Mukai transform of coherent systems introduced by Hern\'andez Ruiperez and Tejero Prieto.