Conjecture on degeneration of singular AC metrics to smooth AC metrics

Let EBE\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 ELE\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 ELE\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 ELE\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.

Sources & referencesView supporting material

Primary source

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

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