Phase Transition of the Fermionic Condensate (ψ-field) at 7.76 keV: From Superfluid Early Universe to Viscous Late-Time Expansion

Александр Алексеевич Шляпик

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Phase Transition of the Fermionic Condensate (ψ-field) at 7.76 keV: From Superfluid Early Universe to Viscous Late-Time Expansion

А. А. Шляпик

2026-04-06

https://doi.org/10.24108/preprints-3114852

This research note provides a fundamental physical mechanism for the evolution of the cosmic medium within the Fermionic Universe Hypothesis (FUH). We identify a critical phase transition at an energy threshold of approximately 7.76 keV. Above this energy (Early Universe, T > 90 million K), the fermionic condensate (ψ-field) existed in a superfluid state with zero bulk viscosity, explaining the rapid, coherent growth of primordial fluctuations. As the Universe cooled below 7.76 keV, spontaneous symmetry breaking led to the emergence of a viscous liquid phase with a dynamic viscosity η = 1.2 × 10−15 Pa·s.

Ссылка для цитирования:

Шляпик А. А. 2026. Phase Transition of the Fermionic Condensate (ψ-field) at 7.76 keV: From Superfluid Early Universe to Viscous Late-Time Expansion. PREPRINTS.RU. https://doi.org/10.24108/preprints-3114852

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