Integration of inhomogeneous cosmological spacetimes in the BSSN formalism

Nov 3, 2015
11 pages
Published in:
  • Phys.Rev.D 93 (2016) 12, 124059
  • Published: Jun 24, 2016
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Abstract: (APS)
We present cosmological-scale numerical simulations of an evolving universe in full general relativity and introduce a new numerical tool, cosmograph, which employs the Baumgarte-Shapiro-Shibata-Nakamura formalism on a three-dimensional grid. Using cosmograph, we calculate the effect of an inhomogeneous matter distribution on the evolution of a spacetime. We also present the results of a set of standard stability tests to demonstrate the robustness of our simulations.
Note:
  • Updated to match published version