Reproducibility dataset for "Two-sided crossover scaling of entropy relaxation near a fermionic Lifshitz point"
Year: 2026
Type: dataset
Abstract: Reproducibility dataset for "Two-sided crossover scaling of entropy relaxation near a fermionic Lifshitz point" This dataset contains the complete code, numerical data and publication figures supporting the study of entropy relaxation after a quench in a next-nearest-neighbour free-fermion chain near its Lifshitz point. The archive provides closed two-sided crossover functions, negative-detuning window topology, full-Brillouin-zone quasiparticle comparisons, exact finite-size Gaussian correlation-matrix calculations with ring-size doubling, and a density-correlation signature of slow-point nucleation. The density-correlator analysis includes raw time traces, full Fourier amplitudes, the exact beat frequency Omega = alpha^2/(2 J1-alpha), and momentum-grid, stationary-phase, time-window, detrending and temporal-sampling checks. Contents include all custom Python modules, plotting and validation scripts, 18 tests, numerical CSV files, four figure PDFs, manuscript source with analytical appendices, dependency requirements, and step-by-step reproduction instructions. SHA256.json identifies every distributed file; verify_archive.py checks file integrity and code dependencies without rerunning simulations. The more expensive finite-size calculations are supplied as cached data for inspection. The tested environment is Python 3.10, NumPy 2.2.6, SciPy 1.15.3 and Matplotlib 3.10.9. Numerical calculations are deterministic and require no external datasets or random seeds. See REPRODUCIBILITY.md for the result-to-code map and full execution order. This corrected release supersedes the original August 28 files. It corrects the negative-detuning correlator asymptotics and associated figure, includes the complete correlator validation data, and removes the unsupported cusp-resolution estimate inferred from positive-detuning data. The final submission-packaging edit changes no scientific figure or numerical CSV relative to the preceding September 2 revision. Please cite DOI 10.5281/zenodo.22147316 together with the associated article and retain the release identification and checksum manifest when reproducing results.
Author: Ou, Ruocun
Institution: Nanyang Normal University
Language: English
Topic: Quantum many-body systems
Subfield: Atomic and Molecular Physics, and Optics
Field: Physics and Astronomy
Domain: Physical Sciences
Open Access status: green
OpenAlex ID: W7204606334