Elastic Vacuum Model: Cosmological Parameter Fits for Dark Energy

Andrea Zanette's 2026 paper presents the TUE-1 dark-energy parametrization from the Elastic Universe Theory. The model is tested against Pantheon+ supernovae, DESI DR2 BAO measurements, H(z) cosmic chronometers, and Planck-inspired priors. The work explores physical interpretations of the fitted coefficients in terms of vacuum relaxation and effective elastic rigidity.

Use Cases

• Comparing dark-energy model performance based on Pantheon+ supernovae and DESI BAO data mentioned in the description
• Investigating quintessence-to-phantom transitions in the equation of state based on the TUE-1 parametrization
• Analyzing the physical interpretation of cosmological coefficients in terms of vacuum relaxation and elastic rigidity concepts

Strengths

• Model tested against multiple observational datasets: Pantheon+ supernovae, DESI DR2 BAO, and H(z) cosmic chronometers.
• Results are statistically competitive with CPL-like dark-energy models, as stated in the description.
• Released under a permissive CC-BY-4.0 license for reuse.

Limitations

• The primary artifact is a 421.1 KB PDF paper; the underlying numerical data or code is not explicitly provided.
• Column-level documentation for any potential supplementary data is absent; field semantics must be inferred from the paper.
• Row count for any associated data tables is unknown, which may limit suitability assessment.

Provenance

Source

Andrea Zanette

Collection Method

Theoretical modeling and parameter fitting against published cosmological observations.

Freshness

Last updated 2026-05-20 13:33:05.