Psi–Continuum State-Space Diagnostics

This repository hosts diagnostic tools for the Psi–Continuum cosmology framework, providing a macroscopic state-space representation of late-time cosmic expansion.

The state-space construction is implemented as a derived diagnostic based on a fixed background-level implementation, consistent with Psi–Continuum Cosmology v2.

Scope

This package implements diagnostic state-space analysis only.

It does not introduce new cosmological models, modify gravitational dynamics, alter the Psi–Continuum v2 API, or perform parameter fitting. All results are derived exclusively from background expansion histories provided by the frozen v2 implementation.

The package is designed to support transparent and fully reproducible state-space diagnostics at the background level.

Current status

• Core state-space diagnostic framework implemented
• Interactive command-line interface available
• Reproducible numerical metrics and publication-ready figures supported

Repository Structure

psi-continuum-statespace
├── CITATION.cff
├── LICENSE
├── psi_continuum_statespace
│   ├── cli.py
│   ├── consistency.py
│   ├── diagnostics.py
│   ├── __init__.py
│   ├── plotting.py
│   └── psi.py
├── publication
│   ├── fig1_state_space.png
│   └── README.md
├── pyproject.toml
├── README.md
└── requirements.txt

Usage

The package provides a command-line interface for exploratory and diagnostic use. All files generated by the CLI are runtime artefacts and do not represent published results.

Example usage (interactive shell):

psi-statespace interactive

Installation from source (clone repository)

git clone https://github.com/dmitrylife/psi-continuum-statespace.git
cd psi-continuum-statespace
python3 -m venv sci_venv
source sci_venv/bin/activate

(Optional) Install the package as editable

pip install -e .

Relation to the publication

This repository serves as a companion diagnostic implementation for the article:

“Psi–Continuum Cosmology v5: A Macroscopic State–Space Response Framework for Late–Time Cosmic Expansion”

The finalized figures used in the article are provided separately in the publication/ directory for reference.

License

This project is licensed under the terms of the MIT License. See the LICENSE file for details.

Citation

If you use this software or the associated state-space diagnostics in academic work, please cite the corresponding article:

Dmitry Vasilevich Klimov (2025).
Psi–Continuum Cosmology v5:
A Macroscopic State–Space Response Framework
for Late–Time Cosmic Expansion.
Zenodo preprint. DOI: 10.5281/zenodo.18088720

Contact

• Email: d.klimov.psi@gmail.com
• Website: https://psi-continuum.org