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  On static solutions of the Einstein - Scalar Field equations

Reiris, M. (in preparation). On static solutions of the Einstein - Scalar Field equations.

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Item Permalink: http://hdl.handle.net/11858/00-001M-0000-0028-FE7C-3 Version Permalink: http://hdl.handle.net/11858/00-001M-0000-0028-FE7D-1
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1507.04570.pdf (Preprint), 204KB
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 Creators:
Reiris, Martin1, Author              
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1Geometric Analysis and Gravitation, AEI-Golm, MPI for Gravitational Physics, Max Planck Society, ou_24012              

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Free keywords: General Relativity and Quantum Cosmology, gr-qc,Mathematics, Differential Geometry, math.DG
 Abstract: In this note we study the Einstein-ScalarField static equations in arbitrary dimensions. We discuss the existence of geodesically complete solutions depending on the form of the scalar field potential $V(\phi)$, and provide full global geometric estimates when the solutions exist. As a special case it is shown that when $V(\phi)$ is the Klein-Gordon potential, i.e. $V(\phi)=m^{2}|\phi|^{2}$, geodesically complete solutions are necessarily Ricci-flat, have constant lapse and are vacuum, (that is $\phi=\phi_{0}$ with $\phi_{0}=0$ if $m\neq 0$). Hence, if the spatial dimension is three, the only such solutions are either Minkowski or a quotient thereof. For $V(\phi)=m^{2}|\phi|^{2}+2\Lambda$, that is, including a vacuum energy or a cosmological constant, it is proved that no geodesically complete solution exists when $\Lambda>0$, whereas when $\Lambda<0$ it is proved that no non-vacuum geodesically complete solution exists unless $m^{2}<-2\Lambda/(n-1)$, ($n$ is the spatial dimension) and the manifold is non-compact.

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 Dates: 2015-07-16
 Publication Status: Not specified
 Pages: 8 pages
 Publishing info: -
 Table of Contents: -
 Rev. Method: -
 Identifiers: arXiv: 1507.04570
URI: http://arxiv.org/abs/1507.04570
 Degree: -

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