Strong Equivalence Principle Validation in the Lattice Field Medium

This paper tests the Strong Equivalence Principle (SEP) in the Lattice Field Medium framework by simulating self-gravitating bodies falling in an external gravitational field. Key Result: Two bodies with different internal chi-structures (light: r=8, amp=0.3; heavy: r=15, amp=0.6) accelerate at identical rates, yielding Nordtvedt parameter eta_N = 0. Significance: LFM respects the SEP, consistent with Lunar Laser Ranging constraints (|eta_N| < 10^-4). Self-gravitating bodies fall at the same rate as test particles regardless of internal gravitational binding energy. Contents: LFM-PAPER-064.pdf - Full manuscript experiments/lfm_nordtvedt_effect.py - Simulation code figures/nordtvedt_effect.png - Trajectory comparison summary.json - Quantitative results Method: 1D lattice (N=512), chi_0=19, g=50, tau=20, 3000 timesteps. Uses GOV-01 and GOV-03 only.