CCEGA Paper 18 v2. 0: Why the Universe Bounced at Nuclear Density — The Correct QCD Derivation of ρc 3D

Key Points

• The study aims to derive the critical density ρ_c from quantum chromodynamics using the MIT bag model and perturbative corrections.
• Utilized the MIT bag model to estimate ρ_trans with perturbative QCD corrections.
• Analyzed parameter values B^{1/4} and α_s within experimentally accepted ranges.
• Identified the gravitational hard threshold and phase transition as a critical point.
• Calculated ρ_trans between 6.9 and 7.9 ρ_nuc, consistent with observed values.
• Confirmed CCEGA's critical density value ρ_c as approximately 7 ρ_nuc from PSR J0952−0607.
• Predicted the cold quark-hadron transition at ~7 ρ_nuc, currently beyond ab-initio calculations due to the sign problem.

Abstract