KIET Project: Phase B–C Numerical Validation (Citadel Release)

This deposition archives the Phase B–C numerical validation of the KIET coupling framework implemented in the Einstein Toolkit (ETK_2024_11, “Lovelace”). The “Citadel” validation roadmap establishes vacuum baselines, bounded constraint behavior across coupling strengths κ ∈ [10⁻⁸, 10⁻⁶], and an observed self-convergence order p ≈ 1.85 for the monitored Hamiltonian constraint diagnostic. Included artifacts: Validation report (PDF) Parameter files and stdout logs (planned for subsequent upload) Constraint outputs (HDF5) (planned for subsequent upload) Scope Disclaimer: This work represents a numerical stability and integration study of a diagnostic toy-model coupling framework and does not constitute experimental validation of any physical propulsion mechanism. Acknowledgement: The author acknowledges the use of OpenAI’s ChatGPT (“Alexander”) as an AI-assisted writing and organizational tool.