On the cycle class map for zero-cycles over local fields

Hélène Esnault, Olivier Wittenberg

Published 2013-05-06, updated 2014-10-09Version 3

We study the Chow group of zero-cycles of smooth projective varieties over local and strictly local fields. We prove in particular the injectivity of the cycle class map to integral l-adic cohomology for a large class of surfaces with positive geometric genus, over local fields of residue characteristic different from l. The same statement holds for semistable K3 surfaces defined over C((t)), but does not hold in general for surfaces over strictly local fields.