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arXiv · 1511.01106

Integration of inhomogeneous cosmological spacetimes in the BSSN formalism

James B. Mertens·John T. Giblin Jr·Glenn D. Starkman
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Abstract

We present cosmological-scale numerical simulations of an evolving universe in full general relativity (GR) and introduce a new numerical tool, {\sc CosmoGRaPH}, which employs the Baumgarte-Shapiro-Shibata-Nakamura (BSSN) formalism on a 3-dimensional grid. Using {\sc 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.

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James B. Mertens, John T. Giblin Jr, Glenn D. Starkman. 2016-06-24. Integration of inhomogeneous cosmological spacetimes in the BSSN formalism. https://doi.org/10.1103/physrevd.93.124059

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