Gauduchon's conjecture on prescribed Chern-Ricci curvature

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Let MM be a compact complex manifold, and let ψ\psi be a closed real (1,1)(1,1)-form on MM satisfying

[ψ]=c1BC(M)∈HBC1,1(M,R).[\psi]=c_{1}^{BC}(M)\in H_{BC}^{1,1}(M,\mathbb{R}).

A Gauduchon metric is a metric ω\omega satisfying

∂∂‾(ωn−1)=0.\partial\overline{\partial}(\omega^{n-1})=0.

Gauduchon's conjecture. There exists a Gauduchon metric ω\omega on MM such that

Ric⁡(ω)=ψ,\operatorname{Ric}(\omega)=\psi,

where Ric⁡(ω)\operatorname{Ric}(\omega) is the Chern-Ricci curvature, locally given by

Ric⁡(ω)=−−1 ∂∂‾log⁡ωn.\operatorname{Ric}(\omega)=-\sqrt{-1}\,\partial\overline{\partial}\log\omega^n.

The conjecture asks for prescribed Chern-Ricci curvature within the Bott–Chern first Chern class; the supplied text gives no evidence of a resolution.

References

Primary source

Eder M. Correa, “Hermitian non-Kähler structures on products of principal S^1-bundles over complex flag manifolds and applications in Hermitian geometry with torsion”, arXiv:1803.09170 (2019).

Additional references

3 papers in this index state this conjecture (2015–2018). The statement above is taken from the most recent of them; the others are arXiv:1609.07854, arXiv:1503.04491.

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