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Integration of inhomogeneous cosmological spacetimes in the BSSN formalism

James B. Mertens1, John T. Giblin, Jr.1,2, and Glenn D. Starkman1

  • 1CERCA/ISO, Department of Physics, Case Western Reserve University, 10900 Euclid Avenue, Cleveland, Ohio 44106, USA
  • 2Department of Physics, Kenyon College, 201 North College Road, Gambier, Ohio 43022, USA

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Phys. Rev. D 93, 124059 – Published 24 June, 2016

DOI: https://doi.org/10.1103/PhysRevD.93.124059

Abstract

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.

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Synopsis

A Relativistic View of a Clumpy Universe

Published 24 June, 2016

Cosmologists have begun using fully relativistic models to understand the effects of inhomogeneous matter distribution on the evolution of the Universe.

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Information

Phys. Rev. D 93, 124059– Published 24 June, 2016
  • Received 5 January 2016
Article part of CHORUS

© 2016 American Physical Society

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