Chern-Ricci flow convergence conjecture for manifolds of general type

Let MnM^n be a compact complex manifold with nef canonical bundle KMK_M and Kodaira dimension Kod(M)=n\mathrm{Kod}(M)=n. Let ω(t)\omega(t) solve the Chern-Ricci flow starting at an arbitrary Hermitian metric ω0\omega_0, and let SS be the canonical-model singular set and ωKE\omega_{\rm KE} the limiting Kähler-Einstein metric on MSM\setminus S. Chern-Ricci flow convergence conjecture. There is a constant CC such that, for all sufficiently large tt,

diam(M,ω(t)t)C,\mathrm{diam}\left(M,\frac{\omega(t)}{t}\right)\leqslant C,

and

(M,ω(t)t)(Z,d)\left(M,\frac{\omega(t)}{t}\right)\longrightarrow (Z,d)

as tt\to\infty in the Gromov-Hausdorff sense, where (Z,d)(Z,d) is the metric completion of (MS,ωKE)(M\setminus S,\omega_{\rm KE}). This predicts the metric-space asymptotics of the flow in the general-type case; the stated convergence and diameter bound are presented as an expected picture, beyond the convergence results known in the ample and previously treated cases.

Sources & referencesView supporting material

Primary source

Valentino Tosatti and Ben Weinkove, “The Chern-Ricci flow”, arXiv:2107.12928 (2021).

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