Quantum Tunneling

Established physics

Try this

Press Play, then vary the barrier height, width, or incoming momentum to see how the probability density evolves.

Notice: a nonzero probability can appear beyond a barrier even when a classical particle would not cross it. This finite-grid Crank–Nicolson demonstration uses simplified natural units and reports total probability as a numerical invariant.

Simulation Controls

Barrier Height (V) 5

Barrier Width (d) 1

Initial Momentum (p₀) 2

Probabilities

Left: 0

Inside: 0

Right: 0

Total (target 1.000): 0