Threshold-Induced Gravitational Screening as the Origin of Inflationary Attractors
Integrating out a heavy sector generates a calculable correction to the Planck mass. The Einstein-frame potential U(χ) = V(χ)/F(χ)² dynamically acquires a plateau whenever V′/V ≈ 2F′/F.
Key results include nₛ = 0.9676⁺⁰·⁰⁰⁰⁴₋₀·₀₀₀₉, r = (2.3⁺¹·⁵₋₁·⁰)×10⁻², αₛ ≈ −8.1×10⁻⁴, βₛ ≈ −4.2×10⁻⁵, and Λsc/H ≥ 12 across the posterior.
The completed broad-prior PolyChord v16 run gives ln Z_ASG = −1472.20 ± 0.62. The matched-prior ΛCDM reference gives ln Z = −1417.76 ± 0.33, so Δln Z_ASG/ΛCDM = −54.44 ± 0.70. The old narrow-prior v15 value is retained only as a prior-sensitivity comparison.
Read the ASG inflation paper in English or read the Polish version. See also the ASG summary page and ASG visualizations.