Model Comparison (IMAGE)

Simons Foundation

Model Comparison

Caption

A comparison of the accuracy of two models of the universe. The new model (left), dubbed D3M, is both faster and more accurate than an existing method (right) called second-order perturbation theory, or 2LPT. The colors represent the average displacement error in millions of light-years for each point in the grid relative to a high-accuracy (though much slower) model.

Credit

S. He et al./<I>Proceedings of the National Academy of Sciences</I> 2019

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