ScalingStacks

Verified tagged author-source HTML · 2007.01384v1 · cited publication edition alignment unverified.

We say π\pi is a degeneration family of Calabi-Yau manifolds 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}}. (1)

The Calabi-Yau metrics ωC​Y,t\omega_{CY,t} on XtX_{t} are the unique Kähler metrics in the class 1|log⁡|t||​c1​(L)\frac{1}{|\log|t||}c_{1}(L) such that

ωC​Y,tn∫XtωC​Y,tn=d​μt.\frac{\omega_{CY,t}^{n}}{\int_{X_{t}}\omega_{CY,t}^{n}}=d\mu_{t}. (2)

Original mathematics by the credited authors. Source collection and HTML conversion remain in progress.