Data for "Emergent relativistic symmetry from interacting fermions on the honeycomb bilayer"
Authors: Zi Hong Liu and Lukas Janssen
Related manuscript: Physical Review B, LR19293BR

CONTENTS AND SCOPE

This archive contains numerical data, simulation/continuation parameters,
analysis scripts, and text logs from the authors' bernal_stacking working
directory. Source files are preserved byte for byte under data/, with their
original relative paths. It includes intermediate results, alternative analyses,
and older versions; it is a data-directory snapshot, not a selection restricted
to the final plotted points. Files with the same name in different directories
may contain different results and have deliberately been retained.

Included: all .dat, .py, .sh, .log, and extensionless regular files.
Excluded: rendered plots/images, literature PDFs, LyX/office documents,
editor backups, Python bytecode, and cache/version-control directories.
The simulation software distribution is not included in this archive.

DIRECTORY GUIDE (paths relative to data/)

./                  Observable tables, parameter files, and analysis scripts.
ana/                Ground-state finite-size scaling, critical-exponent and
                    data-collapse analyses, including their input tables.
ana/test/           Finite-temperature phase-boundary and crossover analyses.
tmpdata/            Additional finite-temperature observable tables and fits;
                    includes high-T/, low_T/, and Green-function data.
green_data/         Imaginary-time/continuation data, continuation parameters,
                    spectral tables, scripts, and logs. Alternative/older
                    analyses remain in p_channel/, p_ph/, and old_sac/.
python_scripts/     Band-structure, spectral and quasiparticle analyses and
                    associated numerical tables; includes model variants.
L9_ft/, L12_ft/     Finite-temperature free-energy and derivative analyses.
cpu_test/           Performance benchmark data and plotting scripts.

DATA FORMATS AND READING

Most numerical tables are whitespace-delimited plain text, often without column
headers. Preserve directory structure: scripts commonly use relative paths.
Use the corresponding script and parameter file to interpret a particular
table. Column numbers below are one-based. Error columns are the uncertainties
stored in the source tables; they have not been recalculated for this archive.

Den_L{L}t{Theta}.dat (ground-state tables used by ana/ scripts):
  1: interaction V; 2: correlation ratio Rc; 3: uncertainty in Rc;
  4: CDW structure-factor quantity (named chi in the scripts);
  5: its uncertainty. Plotting scripts can apply size normalization, e.g. /L^2.
  L is the linear system size; Theta is the projection parameter (often 2L).

Den_L{L}V{V}_Ising.dat (finite-temperature tables):
  1: temperature T; 2-3: correlation ratio and uncertainty;
  4-5: CDW structure-factor quantity and uncertainty.
  Consult the analysis script for the finite-size rescaling applied to columns
  4-5. This is distinct from the uniform charge susceptibility.

Zqp_L{L}t{Theta}.dat (tables used by ana/ scripts):
  1: interaction V; 2: quasiparticle observable stored as Zqp in the scripts;
  3: its uncertainty. Consult the relevant script for further normalization.

ana/test/ft_boundary.dat and ana/test/ft_crossover.dat:
  1: interaction V; 2: transition/crossover temperature; 3: uncertainty.

green_data/Green_L24t{T}V1.00/Green_Spectral.dat:
  Four-column spectral table. plot_spectrum_new.py uses column 1 for the
  momentum-path index, column 2 for frequency, and column 4 for spectral weight.
  Here the filename's t denotes temperature, unlike the ground-state t{Theta}
  naming convention. Other continuation outputs have their own native formats.

Do not assume that the first column is temperature in every finite-temperature
file: some tables use inverse temperature. Other files, including energies,
fit summaries, Green-function inputs and continuation outputs, should be read
using their associated scripts and parameters rather than the examples above.
Physical definitions, units, and normalizations are specified in the article
and its Supplemental Material.

ANALYSIS SOFTWARE

The scripts are preserved as research working scripts. Many use Python 3 with
NumPy, SciPy and Matplotlib; some Bayesian analyses also import PyMC3 and ArviZ.
Some shell scripts require external analysis/plotting programs. Software
versions are not pinned. Local paths, fonts, and hard-coded settings may need
adjustment. The scripts have not been executed or validated as a complete
reproduction workflow during packaging. No new simulations were performed.

Useful entry points for understanding the tables include:
  ana/plt_raw_chi_and_zqp_new.py
  ana/plt_fig2_new_new.py
  ana/test/plot_ft_phase_2.py
  tmpdata/plt_cross_forpaper.py
  green_data/plot_spectrum_new.py

INTEGRITY AND CITATION

MANIFEST.csv lists every included source file with its byte size and SHA-256.
SHA256SUMS.txt covers every data file and the archive documentation/manifest
(excluding the checksum file itself). From the extracted archive directory,
verify on Linux with: sha256sum -c SHA256SUMS.txt

Please cite the associated article and this dataset's OPARA record. The dataset
DOI, release date, and reuse license are to be recorded in the OPARA metadata.
