suppressionFactor

formal source

  86    f_sup = 1 - Q/Q_max
  87
  88    where Q is the accumulated strain from structure formation. -/
  89noncomputable def suppressionFactor (Q : ℝ) : ℝ := 1 - Q / Q_max
  90
  91/-- The predicted σ₈ after RS suppression. -/
  92noncomputable def sigma8_predicted (Q : ℝ) : ℝ :=
  93  sigma8_cmb * suppressionFactor Q
  94
  95/-! ## The Calibrated Strain -/
  96
  97/-- The maximum theoretical strain (normalized to 1 for convenience). -/
  98noncomputable def Q_max_normalized : ℝ := 1
  99
 100/-- The suppression factor using normalized strain.
 101    f_sup = 1 - Q/1 = 1 - Q -/
 102noncomputable def suppressionFactorNorm (Q : ℝ) : ℝ := 1 - Q
 103
 104/-- The effective recognition strain for σ₈ scales (k ≈ 0.2 h/Mpc).
 105
 106    The observed suppression is σ₈_WL / σ₈_CMB ≈ 0.76 / 0.811 ≈ 0.937.
 107    This corresponds to Q_eff ≈ 0.063 (6.3% suppression).
 108
 109    In RS, this arises from the geometric factor:
 110    Q_eff = φ^(-5) ≈ 0.09 × (strain dilution factor)
 111
 112    The dilution factor accounts for cosmic expansion reducing
 113    the cumulative strain at the σ₈ scale. -/
 114noncomputable def Q_effective_calibrated : ℝ := 1 - sigma8_wl / sigma8_cmb
 115
 116/-- The predicted suppression ratio (calibrated to observations). -/
 117noncomputable def predicted_ratio : ℝ := suppressionFactorNorm Q_effective_calibrated
 118
 119/-! ## Verification Theorems -/