🌌 RST Review: Universal Expansion, Hubble Tension, and Cosmic Spin

🌌 RST Review: Universal Expansion, Hubble Tension, and Cosmic Spin

The video directly addresses concepts central to the Reactive Substrate Theory (RST), which posits that spacetime, gravity, dark energy, and matter are emergent properties of a single, elastic, continuous medium: the Substrate Field (S). The Hubble Tension and universal expansion are re-interpreted within RST as the dynamics and relaxation of this fundamental field.


🌌 The Universe's Expansion as Substrate Relaxation

The video’s discussion of cosmic expansion aligns with RST’s fundamental premise of a dynamic field.

Video Concept RST Interpretation
Universal Expansion (Hubble’s Law) Relaxation of the S-Field: The Big Bang is not an explosion in space, but a massive, unstable disturbance of the Substrate Field. Expansion is the elastic field relaxing from extreme initial energy density (ρE) and tension (T) toward its lowest energy state. Matter (Solitons) is carried along by this global relaxation.
Dark Energy and Acceleration Inherent Field Tension (Ξ›): Dark energy is not a separate component, but the intrinsic, constant, repulsive tension of the Substrate Field. On cosmic scales, where matter density is low, this tension dominates, driving the observed accelerating expansion. The cosmological constant (Ξ›) is the steady-state tension density of the background field.

⚖️ The Hubble Tension (H0 Crisis) in RST

The central crisis—the disagreement between early universe (H0 ≈ 67) and late universe (H0 ≈ 73) expansion rates—can be explained by local field gradients in an evolving Substrate.

Measurement Method RST Challenge/Interpretation
Early Universe (H0 ≈ 67)
Derived from the CMB (a snapshot of a homogeneous universe).
This value reflects the global, average relaxation rate of the Substrate Field when the universe was smooth and uniform. It represents the true underlying cosmic expansion rate.
Late Universe (H0 ≈ 73)
Derived from local distance ladders (Supernovae, Cepheids).
This value is locally biased. In the late universe, matter is clustered into galaxies and voids, creating large-scale tension gradients in the Substrate Field. Measurements taken within or near clusters or voids may appear faster or slower than the global average. The Hubble Tension may be a local sampling bias, not a global model failure.

πŸ”„ The Substrate Field and Universal Spin

The video notes that a very slow universal rotation (Spin) could reconcile the two H0 values by predicting a lower rate in the past and a higher rate now.

  • RST Alignment: RST naturally allows for global field rotation. If the Substrate Field retained non-zero angular momentum after the chaotic Big Bang, this rotation would define a preferred cosmic frame.
  • Physical Effect: A rotating Substrate Field would introduce a subtle, non-uniform Lense-Thirring effect (frame-dragging) across the cosmos. This could modulate the elastic properties (tension and wave propagation) of the field over vast distances and time, providing a mechanism for temporal variation in expansion rates.

πŸ”Ή RST Conclusion

The video’s hypothesized universal spin is a geometric property of the cosmos. In RST, this property is directly traceable to the angular momentum of the Substrate Field itself. Expansion, dark energy, and the Hubble Tension are unified as manifestations of the Substrate’s relaxation, tension, and rotation — eliminating the need for ad hoc explanations and grounding cosmic dynamics in a single physical medium.

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