Generalized Complete Form of the RST Equation
Generalized Complete Form of the RST Equation
d²Φ/dt² − c² ∇² Φ − μ Φ + β Φ³ = J(x,t)
with
J(x,t) = σ(x,t) ⋅ FR(C[Ψ])
🔹 Breakdown
Left-Hand Side (LHS):
- d²Φ/dt² → inertial term (vacuum inertia, resistance to acceleration).
- − c² ∇² Φ → elastic/dispersion term (finite-speed propagation).
- − μ Φ → linear restoring term (background elasticity, equilibrium).
- + β Φ³ → nonlinear self-focusing (soliton formation, particle stability).
Right-Hand Side (RHS):
- J(x,t) is the source term.
- Defined as σ(x,t) ⋅ FR(C[Ψ]), it represents coupling to external distributions and spinor configurations.
🔹 Special Cases
- Vacuum / no external coupling: If σ(x,t) ⋅ FR(C[Ψ]) = 0, then J(x,t) = 0. The equation reduces to the homogeneous form:
d²Φ/dt² − c² ∇² Φ − μ Φ + β Φ³ = 0 - Strict parity with the original sourced equation: If μ = 0 and S ↔ Φ, then the homogeneous form matches the original vacuum case.
✅ Takeaway
This generalized form unifies both perspectives: the LHS describes intrinsic Substrate mechanics (inertia, elasticity, nonlinearity), while the RHS captures external coupling via σ(x,t) ⋅ FR(C[Ψ]). Setting J(x,t) = 0 recovers the homogeneous form, while keeping it explicit shows how RST links internal dynamics to external sources.