SimonDavenport/hamiltonian_diagonalization

This repository is a 'code-behind-the-paper' archive for research published in 2015 (arXiv:1504.07232). With only 2 stars and no forks over nearly a decade, it lacks any community traction or developer ecosystem. From a competitive standpoint, the project has been effectively displaced by mature, high-performance quantum simulation frameworks like Kwant (for tight-binding models) or QuTiP. The 'brute-force' approach described is computationally inefficient compared to modern sparse-matrix solvers or symmetry-aware diagonalization methods. It holds value solely as a historical reference for reproducing the specific results of the linked paper. There is no moat, as the logic is a standard application of numerical linear algebra to a specific physics problem. Frontier labs have zero interest in this niche, but specialized academic tools have long since surpassed its capabilities.