An integral invariant from the view point of locally conformally Kähler geometry

Abstract

In this paper we study an integral invariant which obstructs the existence on a compact complex manifold of a volume form with the determinant of its Ricci form proportional to itself, in particular obstructs the existence of a Kähler-Einstein metric, and has been studied since 1980's. We study this invariant from the view point of locally conformally Kähler geometry. We first see that we can define an integral invariant for coverings of compact complex manifolds with automorphic volume forms. This situation typically occurs for locally conformally Kähler manifolds. Secondly, we see that this invariant coincides with the former one. We also show that the invariant vanishes for any compact Vaisman manifolds.

12 pages

References in corpus (3)

• An example of asymptotically Chow unstable manifolds with constant scalar curvature
• Remarks on logarithmic K-stability
• Examples of non-symmetric Kähler-Einstein toric Fano manifolds