Finite-Validation Cosmology — Simulation Code

Simulation and analysis code accompanying

Physics from Finite Validation: A Cosmology of the Dark Sector Without Expansion Ivan Denysov, United Field Initiative (UFI), ufi.observer ORCID 0009-0000-3163-4426

This repository contains every run cited in the preprint, organised by sector, plus the figure scripts and the data used. Runs are exploratory instruments within stated models, not measurements of nature; each script prints its result and its status. Negative and withdrawn results are kept, not deleted — see the withdrawn-arguments map below.

Series

Part of the finite-validation programme:

• Paper 1 — Classical Recovery and the Quantum Boundary — DOI 10.5281/zenodo.20604820
• Vacuum Energy — DOI 10.5281/zenodo.21277721
• The Bridge — DOI 10.5281/zenodo.20664784

Install & run

pip install -r requirements.txt
python de_R5_pantheon_fullcov.py   # any script runs standalone

Python 3.10+, numpy / scipy / matplotlib only. Each script is self-contained and prints its numbers to stdout; figure scripts write PNGs to ``.

Run → section map

Dark matter (§3)

Script	What it establishes	Section
dm_R4_v4.py	topological soliton in 3D fails (Derrick)	§3.4 / §9
dm_R6_3d_vortex.py	ring/vortex route fails	§3.4 / §9
dm_R7_k4_stabiliser.py	higher-derivative term has wrong sign (β=−0.105)	§3.4 / §9
dm_R8_vorton_v2.py	vorton current unwinds	§3.4 / §9
dm_R9_qball.py	Q-ball has no interior minimum	§3.4 / §9
dm_R11_schrodinger_poisson.py	phase field → Schrödinger–Poisson (2.67%)	§3.5
dm_R11b_bullet.py	collisionless Bullet morphology	§3.5
dm_R13_goldstone_mass.py	Goldstone mass m²=ε	§3.6
dm_R13b_exact_zero.py	exact masslessness of the gravity mode	§3.6
dm_R14b_converge.py	α = 0.536 ± 0.02 from the relaxed soliton	§3.7
dm_R15_multigalaxy.py	10 LITTLE THINGS dwarfs to 10%	§3.7
dm_R16_core_scaling.py	core scaling	§3.7
dm_R17_v2.py	m²_eff = ε⟨cos θ⟩, variable mass	§3.6
dm_R18_v2.py	m ∝ M⋆^(−0.5)	§3.8
dm_R19_tension_is_signature.py	mass–baryon anti-correlation	§3.8
dm_R20_fifth_force.py	Yukawa fifth force range ≈0.6 pc	§3.6
dm_R21b_core_span.py	converged inner slope −0.14	§3.5
dm_R22_environment.py	environment dependence	§3.8

Dark energy (§4)

Script	What it establishes	Section
sn_mu_z_path.py	static distance modulus μ(z)	§4.3
de_R1_effective_w.py	apparent w₀=−0.42, wₐ=−0.78 (DESI-matching)	§4.5
de_R2_h0_tension.py	Hubble tension has the wrong sign (withdrawn)	§4.7 / §9
de_R3_growth_term.py	growth term	§4.4
de_R5_pantheon_fullcov.py	Pantheon+ full-covariance fit, Δχ²=+11 vs ΛCDM	§4.4
de_R6_robustness.py	EdS excluded +665; p=1 fails +607	§4.4
de_R7_bao_test.py	BAO holds z≤1.5	§4.6
de_R8_diagnose.py	Lyman-α failure localised (+13.5σ)	§4.6
de_R9_factor_audit.py	(1+z) flux bookkeeping; Tolman; light-curve stretch	§4.3 / §5.2
de_R10_section_consistency.py	§3.6 cannot supply the z≳2 regime	§4.6
de_R11_joint_sn_bao.py	6.8σ SN–BAO tension on the growth exponent	§4.6

Redshift (§5)

Script	What it establishes	Section
rs_R1_time_dilation.py	b=1 vs observed 1.003±0.005; scattering excluded 200σ	§5.2
rs_R2_jwst_sharpness.py	angular size, no turnaround	§5.5
rs_R3_amplitude.py	density–redshift correlation amplitude (dz~10⁻⁵)	§5.6
tolman_vs_data.py	T(z)=T₀(1+z), χ²/dof=0.75	§5.3

Microwave background (§6)

Script	What it establishes	Section
cmb_R1_acoustic_scale.py	first (over-stated) acoustic-scale estimate	§6.4
cmb_R1b_scale_honest.py	corrected acoustic scale (factor ~2, comoving)	§6.4
cmb_R2_sound_horizon.py	sound horizon as coherence length, ξ/λ=0.83	§6.4
cmb_R3_costheta_recomb.py	⟨cos θ⟩=1 at recombination	§6.5
cmb_R4_temperature.py	settling spectrum is Rayleigh–Jeans (not Planck)	§6.2
capstone_v2.py	network rings at the sound speed (ω=0.0935)	§6.3
freeze_from_sync_v3.py	ringing freezes out at settling (5.7×10⁴)	§6.3

Cross-checks (consistency between sectors)

Script	What it establishes	Section
xcheck_vacuum_residue.py	re-verifies the imported vacuum residue law	§4.2
xcheck_lambda_environment.py	coherent vs incoherent perturbation of the residue	§4.2
xcheck_lambda_scales.py	gradient vs required node homogeneity	§4.2
xcheck_costheta_variable.py	mean vs spread of Δω (first pass)	§3.8
xcheck_costheta_variable2.py	control variable is dw_coh/ε	§3.8
xcheck_three_anchors.py	dwarf / Bullet / recombination on one variable	§3.8
xcheck_bullet_mass_variation.py	Bullet mass-budget (superseded)	§9
xcheck_bullet_masscentroid.py	Bullet by mass conservation / centroid	§3.8

Figures

fig_bullet_wave.py (Fig.1), fig_hubble_diagram.py (Fig.2), fig_bao_diagnosis.py (Fig.3), fig_angular_size.py (Fig.4), fig_s5_s6.py (Figs.5–7).

Withdrawn arguments (kept, not deleted — see §9 of the paper)

Topological dark matter (dm_R4_v4, dm_R6_3d_vortex, dm_R7_k4_stabiliser, dm_R8_vorton_v2, dm_R9_qball); the ⟨cos θ⟩ absolute-density / saturation argument for the Bullet and its later mass-budget form (xcheck_costheta_variable, xcheck_bullet_mass_variation), superseded by mass conservation (xcheck_bullet_masscentroid); the over-stated acoustic-scale factor (cmb_R1_acoustic_scale → cmb_R1b_scale_honest); the epochal steepening origin (de_R10_section_consistency); and the Hubble-tension relief (de_R2_h0_tension).

Data

See data/README.md. Pantheon+ distances and covariance are included; DESI DR2 BAO and the T(z) compilation are embedded as literal tables in the scripts, with sources cited in-file.

License

Code released under the MIT License (see LICENSE). The accompanying preprint is CC-BY-4.0.

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Data

The dark-energy scripts use the Pantheon+ supernova distances and covariance, which are third-party data and are not redistributed here. Download them from the official release and place pp.dat and pp_cov.dat in this folder (or edit the path at the top of each dark-energy script):

• Pantheon+ data release: https://github.com/PantheonPlusSH0ES/DataRelease (Pantheon+SH0ES.dat and Pantheon+SH0ES_STAT+SYS.cov; rename to pp.dat / pp_cov.dat, or adjust the loader in the scripts).

DESI DR2 BAO points (Abdul-Karim et al. 2025, Phys. Rev. D 112, 083515) and the T(z) compilation (Luzzi 2009; Noterdaeme 2011; Avgoustidis 2016) are embedded as literal tables inside the relevant scripts, with sources cited in-file — no download needed for those.