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An automatically generated code for relativistic inhomogeneous cosmologies

Eloisa Bentivegna
(
- Catania U. and
- INFN, Catania
)

Oct 17, 2016

12 pages

Published in:

Phys.Rev.D 95 (2017) 4, 044046

Published: Feb 28, 2017

e-Print:

1610.05198 [gr-qc]

DOI:

10.1103/PhysRevD.95.044046

View in:

reference search22 citations

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Abstract: (APS)

The applications of numerical relativity to cosmology are on the rise, contributing insight into such cosmological problems as structure formation, primordial phase transitions, gravitational-wave generation, and inflation. In this paper, I present the infrastructure for the computation of inhomogeneous dust cosmologies which was used recently to measure the effect of nonlinear inhomogeneity on the cosmic expansion rate. I illustrate the code’s architecture, provide evidence for its correctness in a number of familiar cosmological settings, and evaluate its parallel performance for grids of up to several billion points. The code, which is available as free software, is based on the Einstein Toolkit infrastructure, and in particular leverages the automated code generation capabilities provided by its component Kranc.

Note:

11 pages, 6 figures

cosmological model: dust
effect: nonlinear
gravitational radiation
critical phenomena
relativity theory
numerical methods
programming
performance
inflation
structure

References(38)

Figures(0)

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