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C. D. Rimes (JILA, U. Colorado), A. J. S. Hamilton (JILA and APS, U. Colorado), N. Y. Gnedin (CASA and APS, U. Colorado)
We present some results from a study of the non-linear evolution of the cosmological matter power spectrum. Non-linear evolution of the power spectrum introduces correlations between the power on different scales, so that a 1:1 mapping of linear to non-linear power (e.g.\ the well-known Peacock & Dodds method) is neccessarily only an approximation. These correlations can be reduced significantly by the technique of ``pre-whitening''. We have used a set of scale-free, self-similar N-body simulations to investigate whether the pre-whitened power offers a better mapping.
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Bulletin of the American Astronomical Society, 36 #2
© YEAR. The American Astronomical Soceity.