The universe's fingerprint: dispersive shock wave in cosmic expansion

200-point model curves  |  H₀ᴰˢᵂ = 72.85   H₀ˢᵖˡ = 71.59   H₀ᴧ = 67.40 km s⁻¹ Mpc⁻¹  |  DESI DR2

(a) H(z) — Hubble tension resolved by crust energy density

H(z)

(b) DESI DR2 BAO residuals — 13 measurements, 7 tracers

BAO

(c) fcrust(z) = f(z) − 1 — real energy density crust from model output

f_crust

(d) Residual fcrust,spline − fcrust,DSW + carrier k(z)

Residual

(e) ★ Amplitude demodulation: ÷[ΩΛ(z)]γ reveals monotonic decay

Demod
15-knot spline Substrate DSW ΛCDM SH0ES Jia et al. DM DH DV |Aobs| |Abare|