Chern classes of vector bundles on arithmetic varieties

Abstract

Let F be a Hermitian vector bundle on an arithmetic variety X over Z. We prove an inequality between the L2-norm of an element in Hι{X, Fy) and arithmetic Chern classes of F under certain stability condition. This is a higher dimensional analogue of a result of C. Soule for Hermitian line bundles on arithmetic surfaces. We observe that our result is related to a conjectural inequality of Miyaoka-Yau type.