Unified Dark Matter Scalar Field Models

Figure 6

Normalized potentials Φ_𝑘(𝑎)/Φ_𝑘(0) are shown for ΛCDM (solid) and UDM (dot-dashed) (see [41]). The lower panel shows potentials at 𝑘=0.001 hMpc⁻¹, the medium panel at 𝑘=0.01hMpc⁻¹, and the upper panel at 𝑘=0.1hMpc⁻¹. UDM curves are for 𝑐_∞²=10⁻⁶,10⁻⁴,10⁻² from top to bottom, respectively. At small 𝑐_∞, ΛCDM and UDM curves are indistinguishable.

(a)

(b)

(c)