Quantum tunneling

Quantum tunneling

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Caption: Quantum tunneling. Computer model of a quantum wavefunction trapped in a deep well (centre). In classical physics, the particle described by this wavefunction doesn't have enough energy to emerge from the central area (patterned). Quantum theory allows a phenomenon known as quantum tunneling, where it is possible for the particle to 'tunnel' through the barrier and appear in the forbidden region. The blue and red areas outside the central area show how the quantum wavefunction looks very different after tunneling out of the well. This quantum wavefunction is a random wave, an example of quantum chaos. This model was produced as an artwork by Professor Eric Heller.

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