BFUT · P13 · Live Simulation

Weak Lensing — S8 Tension from Rotational Support

Structure growth suppression from angular momentum accumulation in a living universe naturally produces the observed S8 deficit. No new physics required. Seed 1401 (Sim 4) and 1405 (Sim 5).

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Mean Spin λ: 0.035

Coupling f_rot: 2.8

Structures N: 500

S8 — Radial Collapse (Planck)

0.832

S8 — Rotational Collapse (BFUT)

0.7805

S8 Deficit

6.2%

KiDS-1000 Observed Deficit

~8.3%

S8 parameter vs mass scale. Blue = radial collapse (Lambda-CDM/Planck). Green = rotational collapse (BFUT). Each point = mean over N structures. Seed 1401.

Base spin λ₀: 0.035

Char. redshift z_c: 1.5

z=0 deficit

12.1%

z=0.4 deficit (KiDS eff.)

8.3%

z=2 deficit (CMB lensing)

4.1%

Pattern

Grows toward low z

S8 deficit (%) vs redshift z. Low-z lensing surveys see large deficit; CMB lensing at high-z agrees with Planck. This redshift pattern distinguishes BFUT from all other explanations. Seed 1405.