What question did this study set out to answer?

The study aims to demonstrate the limitations of RCD actions in producing galactic phenomena while proposing a new kinetic extension.

synapse

⌘+K

synapse

⌘+K

March 3, 2026Open Access

Galactic Sector Completion: No-Go Theorems and Kinetic Screening

Key Points

The study aims to demonstrate the limitations of RCD actions in producing galactic phenomena while proposing a new kinetic extension.
Proved three no-go theorems against producing O(a_0) galactic effects.
Constructed Completion B' with minimal kinetic extension K(X).
Applied k-mouflage screening to restore galactic phenomenology.
The constructed theory is ghost-free, gradient-stable, and subluminal.
Identified a universal transition acceleration independent of system mass.
Viability window for X_* spans ~15 orders of magnitude.
Five independent observational kill switches were identified.

Abstract

We prove three no-go theorems establishing that the minimal RCD action and its two simplest extensions cannot produce O (a₀) galactic effects. We then construct Completion B', the minimal kinetic extension K (X) = X + X²/X_* with conformal matter coupling A (C) = 1 + beta*f (C), that restores galactic phenomenology through k-mouflage screening. The theory is ghost-free, gradient-stable, and subluminal. The screening mechanism produces a universal transition acceleration aₜrans independent of system mass. The viability window for X_* spans ~15 orders of magnitude. Five independent observational kill switches are identified.

Galactic Sector Completion: No-Go Theorems and Kinetic Screening

Key Points

Abstract

Cite This Study

Also Consider

Also Consider