Phrase guide

Klein paradox

noun · 1 senses · updated from the 2026-07-25 local source snapshot

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1

noun

Meaning 1

A surprising result of applying the Dirac equation to the problem of electron scattering from a potential barrier. In non-relativistic quantum mechanics, electron tunnelling into a barrier is observed, with exponential damping. However, if the potential is of the order of the electron mass, V∼mc2, the barrier is nearly transparent; moreover, as the potential approaches infinity, the reflection diminishes and the electron is always transmitted.

Definition source: English Wiktionary via Wiktextract

Qualifier: quantum mechanics

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Meaning relationships

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Antonyms: none provided

History

Etymology

Discovered by physicist Oskar Klein in 1929.