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Calabi-Yau type theorem for complete manifolds with nonnegative scalar curvature

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arxiv 2402.15118 v1 pith:PXO23TIA submitted 2024-02-23 math.DG

classification math.DG
keywords completecurvaturemanifoldsriemannianscalarcalabi-yaugrowthnonnegative
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abstract

In this paper, we are able to prove an analogy of the Calabi-Yau theorem for complete Riemannian manifolds with nonnegative scalar curvature which are aspherical at infinity. The key tool is an existence result for arbitrarily large bounded regions with weakly mean-concave boundary in Riemannian manifolds with sublinear volume growth. As an application, we use the same tool to show that a complete contractible Riemannian $3$-manifold with positive scalar curvature and sublinear volume growth is necessarily homeomorphic to $\mathbb R^3$.

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  1. Area-charge inequalities and rigidity of time-symmetric initial data sets

    gr-qc 2025-07 conditional novelty 6.0 of 10

    In charged Einstein-Maxwell initial data sets, a boundary surface must have area at least a sharp function of its electric charge and the cosmological constant, with equality only for product geometries.

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