Data and Code for "Modulational instability and numerically persistent solitary waves in a fractional Gross-Pitaevskii equation with Gaussian nonlocal interactions"

This record provides the data and code package for the accepted article "Modulational instability and numerically persistent solitary waves in a fractional Gross-Pitaevskii equation with Gaussian nonlocal interactions", published in Chaos, Solitons & Fractals. This v1.3 release normalizes the dataset title, internal archive folder name, and metadata to match the final accepted article title. No numerical data, figures, scripts, algorithm settings, or scientific conclusions have been changed relative to v1.2. The package includes processed numerical data, figure-generation scripts, figures, algorithm-parameter settings, Python requirements, and reproducibility instructions supporting the modulational-instability diagnostics, stationary-branch computations, Hamiltonian-Krein/VK index checks, grid and time-step convergence tests, conservation-error diagnostics, perturbation-amplitude tests, long-time propagation evidence, and persistence-map visualizations reported in the article.