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Solving the Einstein constraints in periodic spaces with a multigrid approach

MPG-Autoren
http://pubman.mpdl.mpg.de/cone/persons/resource/persons53828

Bentivegna,  Eloisa
Astrophysical Relativity, AEI-Golm, MPI for Gravitational Physics, Max Planck Society;

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Volltexte (frei zugänglich)

1305.5576.pdf
(Preprint), 3MB

CQG_31_3_035004.pdf
(beliebiger Volltext), 2MB

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Zitation

Bentivegna, E. (2014). Solving the Einstein constraints in periodic spaces with a multigrid approach. Classical and quantum gravity, 31(3): 035004. doi:10.1088/0264-9381/31/3/035004.


Zitierlink: http://hdl.handle.net/11858/00-001M-0000-0013-7693-0
Zusammenfassung
Novel applications of Numerical Relativity demand for more flexible algorithms and tools. In this paper, I develop and test a multigrid solver, based on the infrastructure provided by the Einstein Toolkit, for elliptic partial differential equations on spaces with periodic boundary conditions. This type of boundary often characterizes the numerical representation of cosmological models, where space is assumed to be made up of identical copies of a single fiducial domain, so that only a finite volume (with periodic boundary conditions at its edges) needs to be simulated. After a few tests and comparisons with existing codes, I use the solver to generate initial data for an infinite, periodic, cubic black-hole lattice.