Petersson-Weil
metrics on Douady spaces
Georg Schumacher
Marburg, Germany
Abstract
We address
the problems of degeneration and curvature. Previously, for moduli of smooth
hypersurfaces, a generalized Petersson-Weil metric was introduced, using
complete Kaehler-Einstein metrics on the complements. The curvature tensor
was computed explicitly, and hyperbolicity followed. For general dimensions,
we use a different approach. We compute the asymptotic behavior, show that
the Petersson-Weil metric is the curvature of the Quillen metric for certain
determinant bundles, and investigate the situation with respect to
degenerations. A modification of the Petersson-Weil metric yields a certain
hermitian metric on the moduli space, whose curvature is computed. |