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  Hyperbolic reductions for Einstein's equations

Friedrich, H. (1996). Hyperbolic reductions for Einstein's equations. Classical and Quantum Gravity, 13(6), 1451-1469.

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Datensatz-Permalink: http://hdl.handle.net/11858/00-001M-0000-0013-5B3B-1 Versions-Permalink: http://hdl.handle.net/11858/00-001M-0000-0013-5B3C-0
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 Urheber:
Friedrich, Helmut1, Autor              
Affiliations:
1Geometric Analysis and Gravitation, AEI-Golm, MPI for Gravitational Physics, Max Planck Society, ou_24012              

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 Zusammenfassung: We consider the problem of reducing initial value problems for Einstein's field equations to initial value problems for hyperbolic systems, a problem of importance for numerical as well as analytical investigations of gravitational fields. The main steps and the most important objectives in designing hyperbolic reductions are discussed. Various reductions which have already been studied in the literature or which can easily be derived from previous discussions of the field equations are pointed out and some of their specific features are indicated. We propose new reductions based on the use of the Bianchi equation for the conformal Weyl tensor. These reductions involve symmetric hyperbolic systems of propagation equations and allow a number of different gauge conditions. They use unknowns in a most economic way, supplying direct and non-redundant information about the geometry of the time slicing and the four-dimensional spacetime. Some of this information is directly related to concepts of gravitational radiation. All these reductions can be extended to include the conformal field equations. Those which are based on the ADM representation of the metric can be rewritten in flux conserving form.

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Sprache(n): eng - Englisch
 Datum: 1996-06
 Publikationsstatus: Im Druck publiziert
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 Ort, Verlag, Ausgabe: -
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 Identifikatoren: eDoc: 330096
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Titel: Classical and Quantum Gravity
  Alternativer Titel : Class. Quantum Grav.
Genre der Quelle: Zeitschrift
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Ort, Verlag, Ausgabe: -
Seiten: - Band / Heft: 13 (6) Artikelnummer: - Start- / Endseite: 1451 - 1469 Identifikator: ISSN: 0264-9381