Action of Correspondences on Filtrations on Cohomology and 0-cycles of Abelian Varieties

Abstract

We prove that, given a symmetrically distinguished correspondence of a suitable complex abelian variety (which include any abelian variety of dimension atmost 5, powers of complex elliptic curves, etc.) which vanishes as a morphism on a certain quotient of its middle singular cohomology, then it vanishes as a morphism on the deepest part of a particular filtration on the Chow group of 0-cycles of the abelian variety. As a consequence, we prove that given an automorphism of such an abelian variety, which acts as the identity on a certain quotient of its middle singular cohomology, then it acts as the identity on the deepest part of this filtration on the Chow group of 0-cycles of the abelian variety. As an application, we prove that for the Generalized Kummer variety associated to a complex abelian surface and the automorphism induced from a symplectic automorphism of the complex abelian surface, the automorphism of the Generalized Kummer variety acts as the identity on a certain subgroup of its Chow group of 0-cycles.

22 pages. Lemma 3.2.6 in version 2 is removed as the proof was given based on the Lemma 4.3 from H.-Y. Lin's paper "On the Chow group of zero-cycles of a generalized Kummer variety, Adv. Math. 298, 448-472, (2016)" and it has been brought to the attention of author thanks to D. Huybrechts and H.-Y. Lin that the Lemma 4.3 is incorrect. Accordingly the exposition is revised. Comments are welcome