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arXiv · 0808.2840

Can Early Dark Energy be Detected in Non-Linear Structure?

Matthew J. Francis·Geraint F. Lewis·Eric V. Linder
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Abstract

We present the first study of early dark energy cosmologies using N-body simulations to investigate the formation of non-linear structure. In contrast to expectations from semi-analytic approaches, we find that early dark energy does not imprint a unique signature on the statistics of non-linear structures. Investigating the non-linear power spectra and halo mass functions, we show that universal mass functions hold for early dark energy, making its presence difficult to distinguish from $Λ$CDM. Since early dark energy biases the baryon acoustic oscillation scale, the lack of discriminating power is problematic.

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Matthew J. Francis, Geraint F. Lewis, Eric V. Linder. 2008-11-26. Can Early Dark Energy be Detected in Non-Linear Structure?. https://doi.org/10.1111/j.1365-2966.2008.14286.x

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