ScalingStacks

Lemma 2.2 . [05CF]

Original official author HTML, exact retained edition. Historical TeX conversion verdicts remain unchanged. Cited-edition alignment and mathematical self-containment are not assessed.

Complete original source context · Original author HTML

Lemma 2.2.

Suppose we have a Gibbons-Hawking solution on Rn×ℂ∖Π⁡(τ)×{0}R^{n}\times\mathbb{C}\setminus\Pi(\tau)\times\{0\}, that is, a positive definite matrix function locally given by Vi​j=∂2Φ∂uj​∂ujV^{ij}=\frac{\partial^{2}\Phi}{\partial u_{j}\partial u_{j}} such that W:=detVi​j=−4​∂2Φ∂η​∂η¯W:=\det V^{ij}=-4\frac{\partial^{2}\Phi}{\partial\eta\partial\bar{\eta}}, which satisfy the distributional equation (10) in Rn×ℂR^{n}\times\mathbb{C} and, in addition, ∫0∞Vi​j​(u,η,η¯)​d​ui=∞\int\limits_{0}^{\infty}V^{ij}(u,\eta,\bar{\eta})du_{i}=\infty. Then the total space of the torus bundle π:M→Rn×ℂ∖Π⁡(τ)×{0}\pi:M\to R^{n}\times\mathbb{C}\setminus\Pi(\tau)\times\{0\} can be compactified to the fibration π¯:M¯→Rn×ℂ\bar{\pi}:\bar{M}\to R^{n}\times\mathbb{C} such that M¯\bar{M} is biholomorphic (in the orbifold sense) to X𝒯X_{\mathcal{T}} in a manner which respects the map

η:X𝒯→ℂ.\eta:X_{\mathcal{T}}\to\mathbb{C}.

In particular, such solution defines a complete Ricci-flat Kähler metric on the orbifold X𝒯X_{\mathcal{T}} with the standard holomorphic volume form Ωτ\Omega_{\tau}.

Original mathematics by the credited authors. Source-backed reader collection; mathematical self-containment is not assessed.