We perform a reconstruction of the coupling function between vacuum energy and geodesic cold dark matter using the latest observational data. We bin the interaction in seventeen redshift bins but use a correlation prior to prevent rapid, unphysical oscillations in the coupling function. This prior also serves to eliminate any dependence of the reconstruction on the binning method. We use two different forms of the correlation prior, finding that both give similar results for the reconstruction of the dark matter -- dark energy interaction. Calculating the Bayes factor for each case, we find no meaningful evidence for deviation from the null interacting case, i.e. ΛCDM, in our reconstruction.
|Number of pages||10|
|Journal||Physics of the Dark Universe|
|Early online date||30 Apr 2020|
|Publication status||Published - 1 Sep 2020|
- dark energy
- dark matter
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Hogg, N. (Creator), Bruni, M. (Creator) & Crittenden, R. (Creator), Elsevier BV, 30 Apr 2020