4 papers
Numerical solutions to Einstein's equations in a shearing-dust Universe: a code comparison
Julian Adamek, Cristian Barrera-Hinojosa, Marco Bruni +3
A number of codes for general-relativistic simulations of cosmological structure formation have been developed in recent years. Here we demonstrate that a sample of these codes pro…
Inhomogeneous cosmology in an anisotropic Universe
Hayley J. Macpherson
With the era of precision cosmology upon us, and upcoming surveys expected to further improve the precision of our observations below the percent level, ensuring the accuracy of ou…
The trouble with Hubble: Local versus global expansion rates in inhomogeneous cosmological simulations with numerical relativity
Hayley J. Macpherson, Paul D. Lasky, Daniel J. Price
In a fully inhomogeneous, anisotropic cosmological simulation performed by solving Einstein's equations with numerical relativity, we find a local measurement of the effective Hubb…
Einstein's Universe: Cosmological structure formation in numerical relativity
Hayley J. Macpherson, Daniel J. Price, Paul D. Lasky
We perform large-scale cosmological simulations that solve Einstein's equations directly via numerical relativity. Starting with initial conditions sampled from the cosmic microwav…