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We follow the approach employed by Y. Choquet-Bruhat, J. Isenberg and D. Pollack in the case of closed manifolds and establish existence and non-existence results for the Einstein-scalar field constraint equations on asymptotically…

General Relativity and Quantum Cosmology · Physics 2011-04-07 Anna Sakovich

We construct solutions of the constraint equation with non constant mean curvature on an asymptotically hyperbolic manifold by the conformal method. Our approach consists in decreasing a certain exponent appearing in the equations,…

General Relativity and Quantum Cosmology · Physics 2015-05-20 Romain Gicquaud , Anna Sakovich

We show that asymptotically hyperbolic solutions of the Einstein constraint equations with constant mean curvature can be glued in such a way that their asymptotic regions are connected.

Differential Geometry · Mathematics 2015-05-14 James Isenberg , John M. Lee , Iva Stavrov Allen

We construct asymptotically Euclidean solutions of the vacuum Einstein constraint equations with an apparent horizon boundary condition. Specifically, we give sufficient conditions for the constant mean curvature conformal method to…

General Relativity and Quantum Cosmology · Physics 2015-06-25 David Maxwell

We prove the existence of asymptotically hyperbolic solutions to the vacuum Einstein constraint equations with a marginally outer trapped boundary of positive mean curvature, using the constant mean curvature conformal method. As an…

General Relativity and Quantum Cosmology · Physics 2023-02-16 Marcus Khuri , Jarosław Kopiński

In this dissertation, we prove a number of results regarding the conformal method of finding solutions to the Einstein constraint equations. These results include necessary and sufficient conditions for the Lichnerowicz equation to have…

General Relativity and Quantum Cosmology · Physics 2015-07-08 James Dilts

We prove the existence of a large class of initial data for the vacuum Einstein equations which possess a finite number of asymptotically Euclidean and asymptotically conformally cylindrical or periodic ends. Aside from being asymptotically…

General Relativity and Quantum Cosmology · Physics 2016-07-06 Jeremy Leach

Numerical solutions to the Einstein constraint equations are constructed on a selection of compact orientable three-dimensional manifolds with non-trivial topologies. A simple constant mean curvature solution and a somewhat more complicated…

General Relativity and Quantum Cosmology · Physics 2022-10-27 Fan Zhang , Lee Lindblom

We consider the Einstein constraints on asymptotically euclidean manifolds $M$ of dimension $n \geq 3$ with sources of both scaled and unscaled types. We extend to asymptotically euclidean manifolds the constructive method of proof of…

General Relativity and Quantum Cosmology · Physics 2012-08-27 Yvonne Choquet-Bruhat , James Isenberg , James W. York,

In this note we prove two existence theorems for the Einstein constraint equations on asymptotically Euclidean manifolds. The first is for arbitrary mean curvature functions with restrictions on the size of the transverse-traceless data and…

General Relativity and Quantum Cosmology · Physics 2014-03-05 James Dilts , James Isenberg , Rafe Mazzeo , Caleb Meier

The effectiveness of the hyperbolic relaxation method for solving the Einstein constraint equations numerically is studied here on a variety of compact orientable three-manifolds. Convergent numerical solutions are found using this method…

General Relativity and Quantum Cosmology · Physics 2024-03-05 Fan Zhang , Lee Lindblom

We give some uniform estimates for constant mean curvature solutions of the conformal vacuum Einstein constraint equations on compact manifolds. Existence of those solutions was given in a paper by J. Isenberg.

Differential Geometry · Mathematics 2007-05-23 Yu Yan

We introduce a proposal to modify Einstein's equations by embedding them in a larger symmetric hyperbolic system. The additional dynamical variables of the modified system are essentially first integrals of the original constraints. The…

General Relativity and Quantum Cosmology · Physics 2009-10-31 Othmar Brodbeck , Simonetta Frittelli , Peter Huebner , Oscar A. Reula

We construct solutions with prescribed asymptotics to the Einstein constraint equations using a cut-off technique. Moreover, we give various examples of vacuum asymptotically flat manifolds whose center of mass and angular momentum are…

General Relativity and Quantum Cosmology · Physics 2015-05-18 Lan-Hsuan Huang

We consider the conformal decomposition of Einstein's constraint equations introduced by Lichnerowicz and York, on a compact manifold with boundary. We use order relations on appropriate Banach spaces to derive weak solution generalizations…

General Relativity and Quantum Cosmology · Physics 2007-08-28 M. Holst , J. Kommemi , G. Nagy

This paper develops a method for solving Einstein's equation numerically on multi-cube representations of manifolds with arbitrary spatial topologies. This method is designed to provide a set of flexible, easy to use computational…

General Relativity and Quantum Cosmology · Physics 2015-06-18 Lee Lindblom , Bela Szilagyi , Nicholas W. Taylor

This paper makes a formal study of asymptotically hyperbolic Einstein metrics given, as conformal infinity, a conformal manifold with boundary. The space on which such an Einstein metric exists thus has a finite boundary in addition to the…

Differential Geometry · Mathematics 2017-08-09 Stephen E. McKeown

We prove local existence of solutions to the extended constant scalar curvature equations introduced by A. Butscher, in the asymptotically hyperbolic setting. This gives a new local construction of asymptotically hyperbolic metrics with…

Mathematical Physics · Physics 2008-03-18 Erwann Delay

The Einstein constraint equations have been the subject of study for more than fifty years. The introduction of the conformal method in the 1970's as a parameterization of initial data for the Einstein equations led to increased interest in…

Numerical Analysis · Mathematics 2013-05-29 M. Holst , V. Kungurtsev

In this article we develop some new existence results for the Einstein constraint equations using the Lichnerowicz-York conformal rescaling method. The mean extrinsic curvature is taken to be an arbitrary smooth function without…

General Relativity and Quantum Cosmology · Physics 2010-01-13 M. Holst , G. Nagy , G. Tsogtgerel
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