Canonical metric on moduli spaces of log Calabi-Yau varieties
Abstract
In this paper, we give a short proof of closed formula [9],[18] of logarithmic Weil-Petersson
metric on moduli space of log Calabi-Yau varieties (if exists!) of conic
and Poincare singularities and its connection with Bismut-Vergne localization formula.
Moreover we give a relation between logarithmic Weil-Petersson metric and
the logarithmic version of semi Ricci flat metric on the family of log Calabi-Yau
pairs with conical singularities. We highlight Bismut-Gillet-Soule fiberwise integral
formula for logarithmic Weil-Petersson metric on moduli space of polarized
log Calabi-Yau spaces by using fiberwise Ricci flat metric. In final we consider
the semi-positivity of singular logarithmic Weil-Petersson metric on the moduli
space of log-Calabi-Yau varieties. Moreover, we show that Song-Tian-Tsuji measure
is bounded along Iitaka fibration if and only if central fiber has log terminal
singularities and we consider the goodness of fiberwise Calabi-Yau metric in the
sense of Mumford and goodness of singular Hermitian metric corresponding to
Song-Tian-Tsuji measure. We also mention that the Song-Tian-Tsuji measure is
bounded near origin if and only if after a finite base change the Calabi-Yau family
is birational to one with central fiber a Calabi-Yau variety with at worst canonical
singularities.
Origin | Files produced by the author(s) |
---|
Loading...