Abstract
We consider the problem of finding on a given Euclidean domain \(\Omega \) of dimension \(n \ge 3\) a complete conformally flat metric whose Schouten curvature A satisfies some equations of the form \(f(\lambda (-A)) = 1\). This generalizes a problem considered by Loewner and Nirenberg for the scalar curvature. We prove the existence and uniqueness of such metric when the boundary \(\partial \Omega \) is a smooth bounded hypersurface (of codimension one). When \(\partial \Omega \) contains a compact smooth submanifold \(\Sigma \) of higher codimension with \(\partial \Omega {\setminus }\Sigma \) being compact, we also give a ‘sharp’ condition for the divergence to infinity of the conformal factor near \(\Sigma \) in terms of the codimension.
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Notes
Indeed, by Corollary 1.7 below, \(u_\Omega \) is bounded on \({\mathbb {R}}^n\) and goes to zero at infinity. Since \(\Gamma \subset \Gamma _1\), \(u_\Omega \) is subharmonic in \({\mathbb {R}}^n {\setminus } \{0\}\) and thus in \({\mathbb {R}}^n\) as \(u_\Omega \) is bounded from below. This implies by the maximum principle that \(u_\Omega \le 0\) and so \(u_\Omega \equiv 0\).
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Acknowledgements
M.M. González is supported by Spanish government Grants MTM2014-52402-C3-1-P and MTM2017-85757-P, and the BBVA Foundation Grant for Researchers and Cultural Creators 2016. Y.Y. Li is partially supported by NSF Grant DMS-1501004. The first and second authors are grateful to the Fields Institute in Toronto for hospitality during part of work on this paper.
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González, M.d.M., Li, Y. & Nguyen, L. Existence and Uniqueness to a Fully Nonlinear Version of the Loewner–Nirenberg Problem. Commun. Math. Stat. 6, 269–288 (2018). https://doi.org/10.1007/s40304-018-0150-0
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DOI: https://doi.org/10.1007/s40304-018-0150-0
Keywords
- Fully nonlinear Loewner–Nirenberg problem
- Singular fully nonlinear Yamabe metrics
- Conformal invariance