WKB Tunneling — Double Well Potential

Quantum tunneling through classically forbidden regions • WKB transmission coefficient

Barrier Height V₀4.0

Well Separation a2.0

Particle Energy E2.0

ℏ (effective)0.50

WKB Transmission T—

Tunneling Exponent κL—

Instanton Action S—

Classically Allowed?—

WKB: T ≈ exp[−(2/ℏ)∫√(2m(V(x)−E)) dx] | V(x) = V₀[(x/a)²−1]² | Instanton: S = ∫√(2V) dx