Asymptotic Freedom: The Running Strong Coupling α s (Q)
Interactive QCD simulator: drag the probe energy Q and watch the strong coupling constant α_s(Q) fall via the real one-loop beta-function formula, while a 3D quark triplet flips from a rigid confined flux-tube bundle to loosely jittering near-free quarks.
The strong nuclear force is the only fundamental interaction that gets weaker at short distance — a property called asymptotic freedom, discovered by Gross, Politzer and Wilczek and confirmed in every deep-inelastic scattering experiment since the 1970s. This simulator computes the real one-loop QCD beta-function formula for αs(Q) live as you drag the probe energy Q from 0.35 GeV up to 500 GeV, and renders a stylized 3D proton — three color-charged quarks joined by a gluon flux tube — whose turbulence, thickness and quark jitter all respond directly to the computed coupling: a tight, rigid, energetic bundle at low Q (confinement) relaxing into a loose cloud of nearly free quarks at high Q. A live αs vs ln(Q) curve, the β0 coefficient for your chosen quark-flavor count, the resolved probe distance r = ħc/Q, and the Cornell confinement potential V(r) all update in real time.
Drag the probe energy Q and watch the QCD strong coupling constant fall via the real one-loop beta-function formula, while a 3D quark triplet flips from a rigid confined flux-tube bundle to loosely jittering near-free quarks.
3D · Three.js / WebGL renderer · 60 FPS target · runs fully client-side, no install