A spectral solver for evolution problems with spatial S3-topology

Astronomy and Astrophysics – Astrophysics – General Relativity and Quantum Cosmology

Scientific paper

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29 pages, 11 figures, uses psfrag and hyperref, large parts rewritten in order to match to the requirements of the journal, co

Scientific paper

10.1016/j.jcp.2009.05.037

We introduce a single patch collocation method in order to compute solutions of initial value problems of partial differential equations whose spatial domains are 3-spheres. Besides the main ideas, we discuss issues related to our implementation and analyze numerical test applications. Our main interest lies in cosmological solutions of Einstein's field equations. Motivated by this, we also elaborate on problems of our approach for general tensorial evolution equations when certain symmetries are assumed. We restrict to U(1)- and Gowdy symmetry here.

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