Fluctuation Amplitude

Fluctuation Amplitude is the variance of the random energy fluctuations of the substrate in the Pre-Pulse Field before ignition, the parameter σ²▱ that measures how strongly the substrate varies at equilibrium. It belongs to the Equilibrium Conditions of the pre-ignition regime, described by Fluctuation Statistics: the mean fluctuation energy is zero and its variance is this amplitude. Within that random background, isolated energy concentrations can appear with a Boltzmann-like probability but stay transient without recursive feedback, and only correlation-enhanced accumulation that meets the Recursive Stability Criterion leads toward ignition. Var(E⌇) = σ²▱, where E⌇ is the substrate energy fluctuation [𝕄·𝕃²·𝕋⁻²] and σ²▱ is the fluctuation amplitude, tagged [J²], with ⟨E⌇⟩ = 0. It is part of Fluctuation Statistics and Equilibrium Conditions, and connects to Proto-Nova Formation Probability, The Pre-Pulse Field and Recursive Stability Criterion.