>ETRES–GTFE_(Emergent Temporal Rigidity and Elasticity in the Ganainy Temporal Field Equation) Creators

ETRES–GTFE (Emergent Temporal Rigidity and Elasticity in the Ganainy Temporal Field Equation) develops the second stage of the GTFE program by extending the linear temporal dynamics into a controlled effective-field framework admitting an active, dynamically stable vacuum. This paper establishes the rigorous mathematical foundation, causality, and Lyapunov stability of the framework—a necessary precursor to physical interpretation and experimental coupling, analogous to the foundational stages of other major theoretical programs. The starting point is the base GTFE law εt ∂2Aτ ∂t2 − εtc2τ ∇2Aτ + Γ∂Aτ ∂t = ατστ , (1) as introduced in Paper I, now completed by a minimal bounded-from-below self-interaction potential that supports a non-zero ground state Aτ,vac ̸= 0 under strictly positive damping (Γ > 0). This resolves the foundational point left intentionally open in Paper I: how intrinsic temporal activity can coexist with asymptotic stability without negative damping and without imposing rigidity by hand. Temporal rigidity emerges only after vacuum selection and is defined operationally by the vacuum curvature μG ≡ V ′′(Aτ,vac), which induces a finite response scale Ω20 ≡ μG/εt (the temporal gap, or vacuum frequency scale) and an infrared correlation length ξτ ≡ cτ/Ω0. To complete the effective description while remaining explicitly non-geometric, we introduce a minimal temporal elasticity extension through the EFT-consistent fourth-order spatial-gradient term (∇4), characterized by an intrinsic elasticity length ℓτ and a weak-damping real dispersion branch ω (el) eff (k)2 = Ω20 + c2τ k2 + c2τ ℓ2τ k4, (2) which yields three controlled regimes: an IR rigidity-dominated plateau, an intermediate wave-like sector, and a near-cutoff elastic EFT sector within the validity window. Causality is treated as an EFT admissibility condition: cτ remains the limiting signal speed in the reliable domain, and any apparent super-cτ artifact near the cutoff is interpreted as a truncation diagnostic rather than a physical superluminal claim. Stability is strengthened beyond definition: the elastic GTFE admits a positive-definite Lyapunov functional whose monotonic decay implies global attraction toward the active vacuum for all admissible finite-energy perturbations within the linearized dynamics and within the EFT validity window (see Theorem 1). Finally, the symmetry-breaking sector supports non-perturbative spatial structures (domain walls), showing that temporal order emerges both spectrally and configurationally. No geometric or gravitational interpretation is assumed; ETRES–GTFE is formulated as a conservative elastic effective-field theory of temporal structure, preparing the ground for measurable response signatures and subsequent extensions. No assumption beyond linear response, finite energy, and EFT validity is required. This work thus provides the essential structural and stability underpinning for the later stages of the GTFE program, where concrete physical interpretations and experimental couplings will be developed.