TVCF Inflation: Core Framework, Perturbative Extensions, and Research Roadmap

This record contains the complete PDF repository of the Thermodynamic Vacuum Cosmological Framework (TVCF) inflationary extension. The framework presents an alternative approach to early-universe cosmology in which the vacuum energy density is treated as a dynamical quantity depending on the Hubble parameter. By introducing a higher-order H⁴ contribution at high energies, the model generates a quasi-de Sitter inflationary phase without requiring an inflaton field, together with a natural graceful exit and continuous radiation production. The repository includes the full theoretical development of the framework, covering:- Core formulation of the TVCF model- Early-universe extension- Background dynamics and inflationary regime- Radiation production and reheating- Effective causal structure and horizon problem- Minimal perturbation theory- Primordial observables and observational signatures- Late-time consistency- Limitations and open problems- Future directions and research roadmap- Extended perturbative sector and scalar mode identification- Effective Mukhanov–Sasaki-type equation- Thermodynamic origin of fluctuations- Distinctive predictions and observational targets This work should be understood as a structured and internally consistent research program rather than a fully closed cosmological theory. It establishes a foundation for further theoretical and observational development.