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  Generalized harmonic spatial coordinates and hyperbolic shift conditions

Alcubierre, M., Corichi, A., Gonzalez, J. A., Nunez, D., Reimann, B., & Salgado, M. (2005). Generalized harmonic spatial coordinates and hyperbolic shift conditions. Physical Review D, 72(12): 124018.

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Item Permalink: http://hdl.handle.net/11858/00-001M-0000-0013-4F3A-2 Version Permalink: http://hdl.handle.net/11858/00-001M-0000-0013-4F3B-F
Genre: Journal Article

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0507007.pdf (Preprint), 514KB
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 Creators:
Alcubierre, Miguel, Author
Corichi, Alejandro, Author
Gonzalez, Jose A., Author
Nunez, Dario, Author
Reimann, Bernd1, Author
Salgado, Marcelo, Author
Affiliations:
1Astrophysical Relativity, AEI-Golm, MPI for Gravitational Physics, Max Planck Society, escidoc:24013              

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 Abstract: We propose a generalization of the condition for harmonic spatial coordinates analogous to the generalization of the harmonic time slices introduced by Bona et al. These generalized harmonic spatial coordinates imply a condition for the shift vector that has the form of an evolution equation for the shift components. We find that in order to decouple the slicing condition from the evolution equation for the shift it is necessary to use a rescaled shift vector. We also analyze the effect of the shift condition proposed here on the hyperbolicity of the evolution equations of general relativity in 1+1 dimensions and 3+1 spherical symmetry, and study the possible development of blowups. Finally, we perform a series of numerical experiments to illustrate the behavior of this shift condition.

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Language(s): eng - English
 Dates: 2005
 Publication Status: Published in print
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 Identifiers: eDoc: 222416
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Title: Physical Review D
Source Genre: Journal
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Pages: - Volume / Issue: 72 (12) Sequence Number: 124018 Start / End Page: - Identifier: -