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@dmobius3 dmobius3 released this 08 May 06:27
· 27 commits to main since this release
v1.2.1
9fe42a5

Pre-submission polish release. The numerical content of every claim in paper/paper.pdf is now reproducible from the deposited scripts in scripts/. The science is unchanged from v1.2.0; this release closes the reproducibility gaps that a referee could find.

Paper text fixes

  • TABLE II (template-bias mock at $s_0=0.389$): values were hand-typed from a never-committed run; now match the deterministic output of scripts/template_bias.py exactly.
  • TABLE V (prior sensitivity): non-baseline rows now match scripts/prior_sensitivity.py output.
  • TABLE III ($s_0=0.06$ row): off-by-one $w_a$ value corrected (+0.021 → +0.030).
  • $s_0$ bound: the actual posterior 95th percentile is 0.1849; abstract and body now report $s_0 < 0.19$ (conservative rounding-up rather than rounding-down). All dependent quantities updated: $|\beta| < 0.012$, fractional H² contribution $< 0.8%$ at $z=1$, $w_a \approx +0.29$ at the upper limit, factor-$\sim$10 amplitude gap to the DESI best fit.
  • Bayes-factor stability: actual is $\pm 0.03$ across bandwidths, not $\pm 0.02$.

New scripts (close two reproducibility gaps)

  • scripts/prior_sensitivity.py — reweights the baseline lcos_chain.npy for the flat-in-$s_0^2$ and flat-in-$\log_{10}(s_0)$ priors and prints the TABLE V values.
  • scripts/bayes_factor.py — computes the Savage-Dickey ratio $B_{01}$ at the $s_0=0.001$ prior boundary using a boundary-reflected KDE with a bandwidth scan. Reproduces the §V.G $B_{01} \approx 7.1$ claim.

Editorial

  • §III: consolidated split-dependence discussion (the diagnostic $w_{\rm eff}$ classification is convention-dependent; both fiducial and dressed splits are valid; the convention-dependence is itself part of the template-bias finding).
  • §V.G: explicit bridge from the wCDM result back to the §IV template-bias mechanism.
  • §IV.B: polynomial $\chi^2 \approx 0$ (3 free parameters on 13 BAO points) called out as the strongest single piece of evidence that the apparent crossing in two-parameter forms is purely a basis-restriction artifact.
  • Title finalized as "Apparent Phantom Crossing as Template Bias: A Bounded Test Case with Λcos" across paper, READMEs, and references.bib.
  • Layout: 9 pages, two-column REVTeX 4.2, all 10 tables and 4 figures placed cleanly.

Reproducibility map (paper/README.md)

Now lists prior_sensitivity.py (§5.3) and bayes_factor.py (§5.5) alongside the existing fit scripts, so a referee starting from this archive can regenerate every numeric claim.

No analysis-code changes

Fit scripts (fit_lcdm.py, fit_lcos.py, fit_wcdm.py, fit_lcdm_cmb.py, fit_lcos_cmb.py, fit_clock_exponents.py), data files, and chain outputs are unchanged from v1.2.0. The paper-text numbers now match what those scripts deterministically produce.

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