Smooth convergence conjecture for the Chern-Ricci flow on elliptic bundles

Let f:MΣf:M\to\Sigma be an elliptic bundle over a Riemann surface Σ\Sigma of genus at least 22, and let ω(t)\omega(t) solve the Chern-Ricci flow on MM from an arbitrary Gauduchon metric ω0\omega_0. Let ωΣ\omega_\Sigma be the Kähler-Einstein metric on Σ\Sigma, and let dΣd_\Sigma be its induced distance. Elliptic-bundle convergence conjecture. As tt\to\infty,

ω(t)tfωΣ\frac{\omega(t)}{t}\to f^*\omega_\Sigma

smoothly on MM, (M,ω(t)/t)(Σ,dΣ)(M,\omega(t)/t)\to(\Sigma,d_\Sigma) in the Gromov-Hausdorff sense, and there is a constant CC such that

supMRm(ω(t)t)g(t)/tC\sup_M\left|\mathrm{Rm}\left(\frac{\omega(t)}{t}\right)\right|_{g(t)/t}\leqslant C

for all sufficiently large tt. The same conclusions are expected for a general non-Kähler minimal properly elliptic surface after passing to a finite cover making the fibration elliptic. These claims extend the known convergence results for special initial metrics.

Sources & referencesView supporting material

Primary source

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

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