Substrate Density Profile — Crust Model vs DESI DR2
Dark energy as transient disequilibrium + remnant boundary energy from previous cycle
f(z)
= 1 + B·z·e
−z/z
s
− C·z²/(z² + z
b
²)
→
w(z)
= −1 + (1+z)·f′/(3f)
Dark energy density f(z)
Combined
Crust
Bulk
DESI
Equation of state w(z)
Model
DESI CPL
1σ/2σ
w₀ – wₐ plane
DESI
Model
+ ΛCDM
Parameters
Crust — boundary encounter energy near z
s
B (amplitude)
1.88
fit
z
s
(location)
0.63
fit
Bulk deficit — less DE in the deep past
C (depth)
1.00
predicted
z
b
(onset)
2.20
derivable
ΛCDM
Crust only
Bulk only
Best fit (C=1)
Auto-fit
Param
Value
Status
Physical meaning
C
1.0
Predicted
Volovik: equilibrium DE = 0
z
b
2.20
Derivable
Matter→Λ transition onset
B
1.88
Fit
Crust energy density
z
s
0.63
Fit
Crust location (prev. cycle)
Interpretation