Why Quantum Tunneling Is Essential for Nuclear Fusion in Stars

为何量子隧穿对恒星核聚变至关重要

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Classical physics predicts that hydrogen nuclei in stellar cores cannot overcome their mutual electrostatic repulsion at observed temperatures—yet fusion occurs relentlessly.
Quantum tunneling allows protons to penetrate the Coulomb barrier probabilistically, enabling fusion reactions at energies far below classical thresholds.

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