V.R419 — DESI DR2 Confrontation

Confrontation table: ΛCDM (w₀=−1, wₐ=0) at 2.8–4.2σ from DESI. τ (w₀=−0.960, wₐ>0) at ~2σ from DESI. τ provides physical mechanism (defect depletion) for w≠−1; ΛCDM has no explanation for dynamical DE.