Generalized uniqueness conjecture for compatible Calabi–Yau metrics

Fix a polystable negative valuation vv on XX. Let Mv\mathcal M_v be the space of compatible Calabi–Yau metrics on XX with v=vωv=v_\omega, let Cv\mathcal C_v be the corresponding weighted asymptotic cone, and let Nv\mathcal N_v be the space of Calabi–Yau cone metrics on Cv\mathcal C_v with the Reeb vector field determined by vv. Consider the map

C:MvNv\mathfrak C:\mathcal M_v\rightarrow\mathcal N_v

obtained by taking the appropriate rescaled limit of the Kähler form under the weighted asymptotic cone construction. Generalized uniqueness conjecture. The map C\mathfrak C is well-defined and bijective. This would identify compatible Calabi–Yau metrics with their asymptotic cone metrics and extend uniqueness beyond the uniform-equivalence question; it remains open.

Sources & referencesView supporting material

Primary source

Song Sun and Junsheng Zhang, “No semistability at infinity for Calabi-Yau metrics asymptotic to cones”, arXiv:2208.05098 (2023).

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