Figure 1: Comparison of cosmological large-scale structures formed by standard CDM and by wavelike dark matter, ψDM. | Nature Physics

Figure 1: Comparison of cosmological large-scale structures formed by standard CDM and by wavelike dark matter, ψDM.

From: Cosmic structure as the quantum interference of a coherent dark wave

Figure 1

a, Structure created by evolving a single coherent wave function for ΛψDM calculated on adaptive-mesh-refinement grids. b, Structure simulated with a standard ΛCDM N-body code GADGET-2 (ref. 34) for the same cosmological parameters, with the high-k modes of the linear power spectrum intentionally suppressed in a way similar to the ψDM model to highlight the comparison of large-scale features. This comparison clearly demonstrates that the large-scale distribution of filaments and voids is indistinguishable between our model and ΛCDM (which has been successful in describing the observed large-scale structure). ψDM arises from the low-momentum state of the condensate so that it is equivalent to collisionless CDM well above the Jeans scale.

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