Conservative discretization of the Einstein-Dirac equations in spherically symmetric spacetime

Details Conservative discretization of the Einstein-Dirac equations in spherically symmetric spacetime Conservative discretization of the Einstein-Dirac equations in spherically symmetric spacetime

2006-07-28

arxiv.org/abs/gr-qc/0607128v1

Class.Quant.Grav. 23 (2006) S615

Astronomy and Astrophysics

Astrophysics

General Relativity and Quantum Cosmology

24 pages, 8 figures

Scientific paper

10.1088/0264-9381/23/16/S17

In computational relativity, critical behaviour near the black hole threshold has been studied numerically for several models in the last decade. In this paper we present a spatial Galerkin method, suitable for finding numerical solutions of the Einstein-Dirac equations in spherically symmetric spacetime (in polar/areal coordinates). The method features exact conservation of the total electric charge and allows for a spatial mesh adaption based on physical arclength. Numerical experiments confirm excellent robustness and convergence properties of our approach. Hence, this new algorithm is well suited for studying critical behaviour.

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