6.2.3 C 0 -convergence of the potential [004V]
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6.2.3 -convergence of the potential
It remains to show
Proposition 6.5.
Up to slightly shrinking the domains, the Calabi-Yau metrics on admit local potential functions such that , and as .
Prop. 6.4 says that the local potential of and differ negligibly in the limit in the -sense. Ideally, one would like to use some version of -volume stability to conclude the -smallness of the relative potential between and . Unfortunately, due to the difficulty of regularization in the non-generic region, there is very little control on the volume density of in the non-generic region, and we cannot conclude a Skoda type estimate like (11) for . This technical problem causes an asymmetry between and , and only ‘one half’ of the -volume stability estimate (cf. section 4.3) applies, which is why we designed Theorem 4.7.
After the dust settles, Theorem 4.7 implies that concentrates near its minimum value (normalized to be zero) on a subset with almost of the Calabi-Yau measure (cf. [53, Prop 4.4, Cor. 4.6]). More precisely, for any given small number , then for sufficiently small , the measure
| (21) |
On a slightly shrinked version of , this can be improved to the -control
by a slightly tricky application of the mean value inequality (cf. [53, Thm. 4.7]). Since is arbitrary, this achieves Prop. 6.5, which verifies the hypothesis of Prop. 6.5, whence the weak metric version of the SYZ conjecture.
Remark 16.
The convergence statement only applies to the generic region. We do not know the answer to
Question 7.
Do the potentials of the CY metrics on converge to the NA CY metric on globally in the hybrid topology?