We construct a complete Ricci-flat K~hler metric on the complexification of a compact rank one symmetric space. Our method is to look for a K~ihler potential of the form r = f(u), where u satisfies the homogeneous Monge-Amp~re equation. We use the high degree of symmetry present to reduce the non-linear partial differential equation governing the Ricci curvature to a simple second-order ordinary differential equation for the function f. To prove that the resulting metric is complete requires some techniques from symplectic geometry.
We study the Segal Bargmann transform on a symmetric space X of compact type, mapping L 2 (X ) into holomorphic functions on the complexification X C . We invert this transform by integrating against a``dual'' heat kernel measure in the fibers of a natural fibration of X C over X. We prove that the Segal Bargmann transform is an isometry from L 2 (X ) onto the space of holomorphic functions on X C which are square integrable with respect to a natural measure. These results extend those of B. Hall in the compact group case.
Academic Press
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