Conjecture on degeneration of singular AC metrics to smooth AC metrics

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Let E→BE\to B be a rank-rr vector bundle, let p:P(E)→Bp:\mathbb{P}(E)\to B be its projectivization, and let LL be the line bundle such that the total space E⊗LE\otimes L is a crepant resolution of the cone over P(E)\mathbb{P}(E). The rr-th root of KP(E)K_{\mathbb{P}(E)} carries singular asymptotically conical (AC) metrics, while E⊗LE\otimes L carries smooth AC metrics.

Metric contraction conjecture. The singular AC metrics on the rr-th root of KP(E)K_{\mathbb{P}(E)} contract along one-parameter families to the smooth AC metrics on E⊗LE\otimes L by shrinking the fibers of pp in the zero section.

This predicts a geometric transition from the branched-cover metrics on the singular space to the smooth metrics on its small crepant resolution. The source gives no resolution of this claim.

References

Primary source

Ronan J. Conlon and Hans-Joachim Hein, “Asymptotically conical Calabi-Yau manifolds, I”, arXiv:1205.6347 (2014).

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