Numerical Implementation of a Singularity-Free Emergent Cosmology in CAMB (CET)

Description (Zenodo) Numerical Implementation of a Singularity-Free Emergent Cosmology in CAMB (B-Project) This repository provides the complete numerical pipeline supporting the results presented in “A Singularity-Free Emergent Cosmology from the B-Project”. It contains all scripts, data tables, and reproducible figures used to implement and analyse an emergent, non-singular cosmological scenario within standard Einstein gravity using the Boltzmann solver CAMB. The B-Project cosmology is encoded through a tabulated, scale-factor–dependent equation of state wΩ(a)wΩ(a), which interpolates smoothly between an early-time stiff or quasi-stiff regime and a late-time vacuum-like behaviour indistinguishable from ΛΛCDM. The background evolution is reconstructed numerically by integrating the continuity equation and the Einstein–Friedmann equations, without introducing modified gravity, exotic matter fields, or quantum geometry effects. The pipeline demonstrates explicitly that: All background quantities remain finite down to a minimum scale factor amin⁡∼10−6amin∼10−6. The Hubble parameter H(a)H(a) remains strictly positive and does not cross zero within the reconstructed domain. The cosmological evolution therefore corresponds to a regular emergent origin, rather than a classical geometric bounce. The implementation is fully compatible with standard Boltzmann solvers and observational pipelines. Contents The repository includes: Tabulated equations of state wΩ(a)wΩ(a) used as CAMB input. Scripts to reconstruct the dark-energy density ρΩ(a)ρΩ(a) and the Hubble rate H(a)H(a). Explicit numerical checks of the classical bounce condition H(a)=0H(a)=0. Scripts to generate all figures used in the associated publication, including: wΩ(a)wΩ(a) ρΩ(a)ρΩ(a) H(a)H(a) Output data files (.dat) corresponding to all reconstructed quantities. Reproducibility All results can be reproduced using standard Python scientific libraries and CAMB (version 1.5.2 tested). No modification of the CAMB source code is required. The repository is intended to serve both as a companion to the paper and as a reusable template for implementing non-standard dark-energy or emergent-cosmology models within existing Boltzmann frameworks. Intended Use This dataset is suitable for: Verification and replication of the published results. Exploration of emergent or non-singular cosmological scenarios within Einstein gravity. Benchmarking alternative early-universe models against standard cosmological solvers.