Original ledger status
LAMBDA.BRANCH.01
LAMBDA.BRANCH.01
Lambda-metrology branch selection => G_N as horizon-metrology OUTPUT, the 123-orders double overlap, and the ACT DR6 birefringence comparison. (1) The form rho_Lambda/Mbar^4=(3/(4pi^2))e^(-2 alpha^-1) is in Paper 1; NEW: with delta_top=48 c3^4=3/(256 pi^4) the physical branch prefactor is (8pi)^2 delta_top=3/(4pi^2) [I], and the alternative branch 2c3 e^(-2a) is mis-scaled by 2c3/delta_top=1/(24 c3^3)=64 pi^3/3=661.467 - so selecting the physical branch PINS Mbar (hence G_N): Newton constant is an output, not a free input [I]+[P consequence]. (2) 123-orders split [I]/[N]: |log10(rho_Lambda/M_Pl^4)|=122.948=119.028(=2 alpha^-1/ln10, EM fixed point)+3.920(=log10(256 pi^4/3), seam-defect prefactor in M_Pl units) - double overlap of one boundary compiler, not fine-tuning. (3) ACT DR6 birefringence [N]: TFPT beta_rad=phi0/(4pi)=0.2424 deg (same seed as Cabibbo); ACT DR6 (Diego-Palazuelos & Komatsu 2025, arXiv:2509.13654, PRD 113 L101302) beta=0.215+-0.074 deg (2.9 sigma) => TFPT ~0.37 sigma from central value (consistent, falsifiable). Plus action exponents (1,5,10)=K5 graph counts (5 vertices, 10 edges)=Pascal 16=1+5+10
Recorded status: Identity [I] + observational [N] + [P] consequence
Dependencies, status detail and source
Canonical status: Identity [I] + observational [N] + [P] consequence
Dependencies: EM.FP.01; v3; v8; v55
Scripts: v60_lambda_metrology_branch.py
Location: origin_theory;tfpt_1
Original CSV, line 129