ScalingStacks

Verified tagged author-source HTML · 2006.16961v1 · cited publication edition alignment unverified.

We say the degeneration family is Calabi-Yau if there is a trivialising section Ω\Omega of the canonical bundle KXK_{X}. Over a small disc 𝔻t\mathbb{D}_{t} around 0∈S0\in S, this induces holomorphic volume forms Ωt\Omega_{t} on XtX_{t} via Ω=d​t∧Ωt\Omega=dt\wedge\Omega_{t}. The normalised Calabi-Yau measure on XtX_{t} is the probability measure

d​μt=Ωt∧Ω¯t∫XtΩt∧Ω¯t.d\mu_{t}=\frac{\Omega_{t}\wedge\overline{\Omega}_{t}}{\int_{X_{t}}\Omega_{t}\wedge\overline{\Omega}_{t}}. (2)

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