Jian-Shi-Song's convergence conjecture for cscK metrics on manifolds with semi-ample canonical bundle

Let (M,ω0)(M,\omega_0) be a compact Kähler manifold with semi-ample canonical bundle KMK_M. Let c1(M)=[Ric(ω0)]c_1(M)=[\operatorname{Ric}(\omega_0)] and consider any sequence of cscK metrics in the Kähler class c1(M)+ε[ω0]-c_1(M)+\varepsilon[\omega_0], where ε>0\varepsilon>0 is sufficiently small. Let gcang_{\mathrm{can}} be the twisted Kähler–Einstein metric on the canonical model McanM_{\mathrm{can}}, and let Φ:MMcan\Phi:M\to M_{\mathrm{can}} be the canonical map. Jian-Shi-Song's convergence conjecture. Any such sequence converges to gcang_{\mathrm{can}} both globally in Gromov–Hausdorff topology and locally in smooth topology away from the singular fibres of Φ\Phi. This conjecture concerns the degeneration of cscK metrics toward the canonical model; the source abstract says that the paper confirms it partially by proving smooth convergence on compact subsets away from a subvariety, while the stated global Gromov–Hausdorff and full local convergence remain unresolved in the supplied text.

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Primary source

Wanxing Liu, “Convergence of cscK metrics on smooth minimal models of general type”, arXiv:2012.09934 (2021).

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