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Oxford University Press (OUP), Monthly Notices of the Royal Astronomical Society, 2(394), p. 605-614

DOI: 10.1111/j.1365-2966.2008.14286.x

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

Journal article published in 2008 by Matthew J. Francis, Geraint F. Lewis ORCID, Eric V. Linder
This paper is made freely available by the publisher.
This paper is made freely available by the publisher.

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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. ; Comment: 11 pages, 19 figures. Minor changes to match version accepted to MNRAS