paper

Stability of Kähler-Ricci flow in the space of Kähler metrics

arXiv:1004.2695 · doi:10.2140/pjm.2011.251.469

Abstract

In this paper, we prove that on a Fano manifold which admits a Kähler-Ricci soliton $(\om,X)$, if the initial Kähler metric $\om_{\vphi_0}$ is close to $\om$ in some weak sense, then the weak Kähler-Ricci flow exists globally and converges in Cheeger-Gromov sense. Moreover, if $\vphi_0$ is also -invariant, then the weak modified Kähler-Ricci flow converges exponentially to a unique Kähler-Ricci soliton nearby. Especially, if the Futaki invariant vanishes, we may delete the -invariant assumption. The methods based on the metric geometry of the space of the Kähler metrics are potentially applicable to other stability problem of geometric flow near a critical metric.

28 pages, 1 figures

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